Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

90 files changed, 37040 insertions, 0 deletions

diff --git a/drivers/input/misc/88pm80x_onkey.c b/drivers/input/misc/88pm80x_onkey.c
new file mode 100644
index 000000000..51c8a326f
--- /dev/null
+++ b/drivers/input/misc/88pm80x_onkey.c
@@ -0,0 +1,165 @@
+/*
+ * Marvell 88PM80x ONKEY driver
+ *
+ * Copyright (C) 2012 Marvell International Ltd.
+ * Haojian Zhuang <haojian.zhuang@marvell.com>
+ * Qiao Zhou <zhouqiao@marvell.com>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License. See the file "COPYING" in the main directory of this
+ * archive for more details.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/input.h>
+#include <linux/mfd/88pm80x.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+
+#define PM800_LONG_ONKEY_EN		(1 << 0)
+#define PM800_LONG_KEY_DELAY		(8)	/* 1 .. 16 seconds */
+#define PM800_LONKEY_PRESS_TIME		((PM800_LONG_KEY_DELAY-1) << 4)
+#define PM800_LONKEY_PRESS_TIME_MASK	(0xF0)
+#define PM800_SW_PDOWN			(1 << 5)
+
+struct pm80x_onkey_info {
+	struct input_dev *idev;
+	struct pm80x_chip *pm80x;
+	struct regmap *map;
+	int irq;
+};
+
+/* 88PM80x gives us an interrupt when ONKEY is held */
+static irqreturn_t pm80x_onkey_handler(int irq, void *data)
+{
+	struct pm80x_onkey_info *info = data;
+	int ret = 0;
+	unsigned int val;
+
+	ret = regmap_read(info->map, PM800_STATUS_1, &val);
+	if (ret < 0) {
+		dev_err(info->idev->dev.parent, "failed to read status: %d\n", ret);
+		return IRQ_NONE;
+	}
+	val &= PM800_ONKEY_STS1;
+
+	input_report_key(info->idev, KEY_POWER, val);
+	input_sync(info->idev);
+
+	return IRQ_HANDLED;
+}
+
+static SIMPLE_DEV_PM_OPS(pm80x_onkey_pm_ops, pm80x_dev_suspend,
+			 pm80x_dev_resume);
+
+static int pm80x_onkey_probe(struct platform_device *pdev)
+{
+
+	struct pm80x_chip *chip = dev_get_drvdata(pdev->dev.parent);
+	struct pm80x_onkey_info *info;
+	int err;
+
+	info = kzalloc(sizeof(struct pm80x_onkey_info), GFP_KERNEL);
+	if (!info)
+		return -ENOMEM;
+
+	info->pm80x = chip;
+
+	info->irq = platform_get_irq(pdev, 0);
+	if (info->irq < 0) {
+		err = -EINVAL;
+		goto out;
+	}
+
+	info->map = info->pm80x->regmap;
+	if (!info->map) {
+		dev_err(&pdev->dev, "no regmap!\n");
+		err = -EINVAL;
+		goto out;
+	}
+
+	info->idev = input_allocate_device();
+	if (!info->idev) {
+		dev_err(&pdev->dev, "Failed to allocate input dev\n");
+		err = -ENOMEM;
+		goto out;
+	}
+
+	info->idev->name = "88pm80x_on";
+	info->idev->phys = "88pm80x_on/input0";
+	info->idev->id.bustype = BUS_I2C;
+	info->idev->dev.parent = &pdev->dev;
+	info->idev->evbit[0] = BIT_MASK(EV_KEY);
+	__set_bit(KEY_POWER, info->idev->keybit);
+
+	err = pm80x_request_irq(info->pm80x, info->irq, pm80x_onkey_handler,
+					    IRQF_ONESHOT, "onkey", info);
+	if (err < 0) {
+		dev_err(&pdev->dev, "Failed to request IRQ: #%d: %d\n",
+			info->irq, err);
+		goto out_reg;
+	}
+
+	err = input_register_device(info->idev);
+	if (err) {
+		dev_err(&pdev->dev, "Can't register input device: %d\n", err);
+		goto out_irq;
+	}
+
+	platform_set_drvdata(pdev, info);
+
+	/* Enable long onkey detection */
+	regmap_update_bits(info->map, PM800_RTC_MISC4, PM800_LONG_ONKEY_EN,
+			   PM800_LONG_ONKEY_EN);
+	/* Set 8-second interval */
+	regmap_update_bits(info->map, PM800_RTC_MISC3,
+			   PM800_LONKEY_PRESS_TIME_MASK,
+			   PM800_LONKEY_PRESS_TIME);
+
+	device_init_wakeup(&pdev->dev, 1);
+	return 0;
+
+out_irq:
+	pm80x_free_irq(info->pm80x, info->irq, info);
+out_reg:
+	input_free_device(info->idev);
+out:
+	kfree(info);
+	return err;
+}
+
+static int pm80x_onkey_remove(struct platform_device *pdev)
+{
+	struct pm80x_onkey_info *info = platform_get_drvdata(pdev);
+
+	pm80x_free_irq(info->pm80x, info->irq, info);
+	input_unregister_device(info->idev);
+	kfree(info);
+	return 0;
+}
+
+static struct platform_driver pm80x_onkey_driver = {
+	.driver = {
+		   .name = "88pm80x-onkey",
+		   .pm = &pm80x_onkey_pm_ops,
+		   },
+	.probe = pm80x_onkey_probe,
+	.remove = pm80x_onkey_remove,
+};
+
+module_platform_driver(pm80x_onkey_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Marvell 88PM80x ONKEY driver");
+MODULE_AUTHOR("Qiao Zhou <zhouqiao@marvell.com>");
+MODULE_ALIAS("platform:88pm80x-onkey");
diff --git a/drivers/input/misc/88pm860x_onkey.c b/drivers/input/misc/88pm860x_onkey.c
new file mode 100644
index 000000000..685995cad
--- /dev/null
+++ b/drivers/input/misc/88pm860x_onkey.c
@@ -0,0 +1,145 @@
+/*
+ * 88pm860x_onkey.c - Marvell 88PM860x ONKEY driver
+ *
+ * Copyright (C) 2009-2010 Marvell International Ltd.
+ *      Haojian Zhuang <haojian.zhuang@marvell.com>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License. See the file "COPYING" in the main directory of this
+ * archive for more details.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/i2c.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/mfd/88pm860x.h>
+#include <linux/slab.h>
+#include <linux/device.h>
+
+#define PM8607_WAKEUP		0x0b
+
+#define LONG_ONKEY_EN		(1 << 1)
+#define ONKEY_STATUS		(1 << 0)
+
+struct pm860x_onkey_info {
+	struct input_dev	*idev;
+	struct pm860x_chip	*chip;
+	struct i2c_client	*i2c;
+	struct device		*dev;
+	int			irq;
+};
+
+/* 88PM860x gives us an interrupt when ONKEY is held */
+static irqreturn_t pm860x_onkey_handler(int irq, void *data)
+{
+	struct pm860x_onkey_info *info = data;
+	int ret;
+
+	ret = pm860x_reg_read(info->i2c, PM8607_STATUS_2);
+	ret &= ONKEY_STATUS;
+	input_report_key(info->idev, KEY_POWER, ret);
+	input_sync(info->idev);
+
+	/* Enable 8-second long onkey detection */
+	pm860x_set_bits(info->i2c, PM8607_WAKEUP, 3, LONG_ONKEY_EN);
+	return IRQ_HANDLED;
+}
+
+static int pm860x_onkey_probe(struct platform_device *pdev)
+{
+	struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
+	struct pm860x_onkey_info *info;
+	int irq, ret;
+
+	irq = platform_get_irq(pdev, 0);
+	if (irq < 0)
+		return -EINVAL;
+
+	info = devm_kzalloc(&pdev->dev, sizeof(struct pm860x_onkey_info),
+			    GFP_KERNEL);
+	if (!info)
+		return -ENOMEM;
+	info->chip = chip;
+	info->i2c = (chip->id == CHIP_PM8607) ? chip->client : chip->companion;
+	info->dev = &pdev->dev;
+	info->irq = irq;
+
+	info->idev = devm_input_allocate_device(&pdev->dev);
+	if (!info->idev) {
+		dev_err(chip->dev, "Failed to allocate input dev\n");
+		return -ENOMEM;
+	}
+
+	info->idev->name = "88pm860x_on";
+	info->idev->phys = "88pm860x_on/input0";
+	info->idev->id.bustype = BUS_I2C;
+	info->idev->dev.parent = &pdev->dev;
+	info->idev->evbit[0] = BIT_MASK(EV_KEY);
+	info->idev->keybit[BIT_WORD(KEY_POWER)] = BIT_MASK(KEY_POWER);
+
+	ret = input_register_device(info->idev);
+	if (ret) {
+		dev_err(chip->dev, "Can't register input device: %d\n", ret);
+		return ret;
+	}
+
+	ret = devm_request_threaded_irq(&pdev->dev, info->irq, NULL,
+					pm860x_onkey_handler, IRQF_ONESHOT,
+					"onkey", info);
+	if (ret < 0) {
+		dev_err(chip->dev, "Failed to request IRQ: #%d: %d\n",
+			info->irq, ret);
+		return ret;
+	}
+
+	platform_set_drvdata(pdev, info);
+	device_init_wakeup(&pdev->dev, 1);
+
+	return 0;
+}
+
+static int __maybe_unused pm860x_onkey_suspend(struct device *dev)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
+
+	if (device_may_wakeup(dev))
+		chip->wakeup_flag |= 1 << PM8607_IRQ_ONKEY;
+	return 0;
+}
+static int __maybe_unused pm860x_onkey_resume(struct device *dev)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
+
+	if (device_may_wakeup(dev))
+		chip->wakeup_flag &= ~(1 << PM8607_IRQ_ONKEY);
+	return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(pm860x_onkey_pm_ops, pm860x_onkey_suspend, pm860x_onkey_resume);
+
+static struct platform_driver pm860x_onkey_driver = {
+	.driver		= {
+		.name	= "88pm860x-onkey",
+		.pm	= &pm860x_onkey_pm_ops,
+	},
+	.probe		= pm860x_onkey_probe,
+};
+module_platform_driver(pm860x_onkey_driver);
+
+MODULE_DESCRIPTION("Marvell 88PM860x ONKEY driver");
+MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig
new file mode 100644
index 000000000..fa9426516
--- /dev/null
+++ b/drivers/input/misc/Kconfig
@@ -0,0 +1,932 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Input misc drivers configuration
+#
+menuconfig INPUT_MISC
+	bool "Miscellaneous devices"
+	help
+	  Say Y here, and a list of miscellaneous input drivers will be displayed.
+	  Everything that didn't fit into the other categories is here. This option
+	  doesn't affect the kernel.
+
+	  If unsure, say Y.
+
+if INPUT_MISC
+
+config INPUT_88PM860X_ONKEY
+	tristate "88PM860x ONKEY support"
+	depends on MFD_88PM860X
+	help
+	  Support the ONKEY of Marvell 88PM860x PMICs as an input device
+	  reporting power button status.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called 88pm860x_onkey.
+
+config INPUT_88PM80X_ONKEY
+	tristate "88PM80x ONKEY support"
+	depends on MFD_88PM800
+	help
+	  Support the ONKEY of Marvell 88PM80x PMICs as an input device
+	  reporting power button status.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called 88pm80x_onkey.
+
+config INPUT_AB8500_PONKEY
+	tristate "AB8500 Pon (PowerOn) Key"
+	depends on AB8500_CORE
+	help
+	  Say Y here to use the PowerOn Key for ST-Ericsson's AB8500
+	  Mix-Sig PMIC.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called ab8500-ponkey.
+
+config INPUT_AD714X
+	tristate "Analog Devices AD714x Capacitance Touch Sensor"
+	help
+	  Say Y here if you want to support an AD7142/3/7/8/7A touch sensor.
+
+	  You should select a bus connection too.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called ad714x.
+
+config INPUT_AD714X_I2C
+	tristate "support I2C bus connection"
+	depends on INPUT_AD714X && I2C
+	default y
+	help
+	  Say Y here if you have AD7142/AD7147 hooked to an I2C bus.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called ad714x-i2c.
+
+config INPUT_AD714X_SPI
+	tristate "support SPI bus connection"
+	depends on INPUT_AD714X && SPI
+	default y
+	help
+	  Say Y here if you have AD7142/AD7147 hooked to a SPI bus.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called ad714x-spi.
+
+config INPUT_ARIEL_PWRBUTTON
+	tristate "Dell Wyse 3020 Power Button Driver"
+	depends on SPI
+	depends on MACH_MMP3_DT || COMPILE_TEST
+	help
+	  Say Y to enable support for reporting power button status on
+	  on Dell Wyse 3020 ("Ariel") thin client.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called ariel-pwrbutton.
+
+config INPUT_ARIZONA_HAPTICS
+	tristate "Arizona haptics support"
+	depends on MFD_ARIZONA && SND_SOC
+	select INPUT_FF_MEMLESS
+	help
+	  Say Y to enable support for the haptics module in Arizona CODECs.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called arizona-haptics.
+
+config INPUT_ATC260X_ONKEY
+	tristate "Actions Semi ATC260x PMIC ONKEY"
+	depends on MFD_ATC260X
+	help
+	  Support the ONKEY of ATC260x PMICs as an input device reporting
+	  power button status. ONKEY can be used to wakeup from low power
+	  modes and force a reset on long press.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called atc260x-onkey.
+
+config INPUT_ATMEL_CAPTOUCH
+	tristate "Atmel Capacitive Touch Button Driver"
+	depends on OF || COMPILE_TEST
+	depends on I2C
+	help
+	  Say Y here if an Atmel Capacitive Touch Button device which
+	  implements "captouch" protocol is connected to I2C bus. Typically
+	  this device consists of Atmel Touch sensor controlled by AtMegaXX
+	  MCU running firmware based on Qtouch library.
+	  One should find "atmel,captouch" node in the board specific DTS.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called atmel_captouch.
+
+config INPUT_BMA150
+	tristate "BMA150/SMB380 acceleration sensor support"
+	depends on I2C
+	help
+	  Say Y here if you have Bosch Sensortec's BMA150 or SMB380
+	  acceleration sensor hooked to an I2C bus.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called bma150.
+
+config INPUT_E3X0_BUTTON
+	tristate "NI Ettus Research USRP E3xx Button support."
+	default n
+	help
+	  Say Y here to enable support for the NI Ettus Research
+	  USRP E3xx Button.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called e3x0_button.
+
+config INPUT_PCSPKR
+	tristate "PC Speaker support"
+	depends on PCSPKR_PLATFORM
+	help
+	  Say Y here if you want the standard PC Speaker to be used for
+	  bells and whistles.
+
+	  If unsure, say Y.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called pcspkr.
+
+config INPUT_PM8941_PWRKEY
+	tristate "Qualcomm PM8941 power key support"
+	depends on MFD_SPMI_PMIC
+	help
+	  Say Y here if you want support for the power key usually found
+	  on boards using a Qualcomm PM8941 compatible PMIC.
+
+	  If unsure, say Y.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called pm8941-pwrkey.
+
+config INPUT_PM8XXX_VIBRATOR
+	tristate "Qualcomm PM8XXX vibrator support"
+	depends on MFD_PM8XXX || MFD_SPMI_PMIC
+	select INPUT_FF_MEMLESS
+	help
+	  This option enables device driver support for the vibrator
+	  on Qualcomm PM8xxx chip. This driver supports ff-memless interface
+	  from input framework.
+
+	  To compile this driver as module, choose M here: the
+	  module will be called pm8xxx-vibrator.
+
+config INPUT_PMIC8XXX_PWRKEY
+	tristate "PMIC8XXX power key support"
+	depends on MFD_PM8XXX
+	help
+	  Say Y here if you want support for the PMIC8XXX power key.
+
+	  If unsure, say N.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called pmic8xxx-pwrkey.
+
+config INPUT_SPARCSPKR
+	tristate "SPARC Speaker support"
+	depends on PCI && SPARC64
+	help
+	  Say Y here if you want the standard Speaker on Sparc PCI systems
+	  to be used for bells and whistles.
+
+	  If unsure, say Y.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called sparcspkr.
+
+config INPUT_M68K_BEEP
+	tristate "M68k Beeper support"
+	depends on M68K
+
+config INPUT_MAX77650_ONKEY
+	tristate "Maxim MAX77650 ONKEY support"
+	depends on MFD_MAX77650
+	help
+	  Support the ONKEY of the MAX77650 PMIC as an input device.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called max77650-onkey.
+
+config INPUT_MAX77693_HAPTIC
+	tristate "MAXIM MAX77693/MAX77843 haptic controller support"
+	depends on (MFD_MAX77693 || MFD_MAX77843) && PWM
+	select INPUT_FF_MEMLESS
+	help
+	  This option enables support for the haptic controller on
+	  MAXIM MAX77693 and MAX77843 chips.
+
+	  To compile this driver as module, choose M here: the
+	  module will be called max77693-haptic.
+
+config INPUT_MAX8925_ONKEY
+	tristate "MAX8925 ONKEY support"
+	depends on MFD_MAX8925
+	help
+	  Support the ONKEY of MAX8925 PMICs as an input device
+	  reporting power button status.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called max8925_onkey.
+
+config INPUT_MAX8997_HAPTIC
+	tristate "MAXIM MAX8997 haptic controller support"
+	depends on PWM && MFD_MAX8997
+	select INPUT_FF_MEMLESS
+	help
+	  This option enables device driver support for the haptic controller
+	  on MAXIM MAX8997 chip. This driver supports ff-memless interface
+	  from input framework.
+
+	  To compile this driver as module, choose M here: the
+	  module will be called max8997-haptic.
+
+config INPUT_MC13783_PWRBUTTON
+	tristate "MC13783 ON buttons"
+	depends on MFD_MC13XXX
+	help
+	  Support the ON buttons of MC13783 PMIC as an input device
+	  reporting power button status.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called mc13783-pwrbutton.
+
+config INPUT_MMA8450
+	tristate "MMA8450 - Freescale's 3-Axis, 8/12-bit Digital Accelerometer"
+	depends on I2C
+	help
+	  Say Y here if you want to support Freescale's MMA8450 Accelerometer
+	  through I2C interface.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called mma8450.
+
+config INPUT_APANEL
+	tristate "Fujitsu Lifebook Application Panel buttons"
+	depends on X86 && I2C && LEDS_CLASS
+	select CHECK_SIGNATURE
+	help
+	 Say Y here for support of the Application Panel buttons, used on
+	 Fujitsu Lifebook. These are attached to the mainboard through
+	 an SMBus interface managed by the I2C Intel ICH (i801) driver,
+	 which you should also build for this kernel.
+
+	 To compile this driver as a module, choose M here: the module will
+	 be called apanel.
+
+config INPUT_GPIO_BEEPER
+	tristate "Generic GPIO Beeper support"
+	depends on GPIOLIB || COMPILE_TEST
+	help
+	  Say Y here if you have a beeper connected to a GPIO pin.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called gpio-beeper.
+
+config INPUT_GPIO_DECODER
+	tristate "Polled GPIO Decoder Input driver"
+	depends on GPIOLIB || COMPILE_TEST
+	help
+	 Say Y here if you want driver to read status of multiple GPIO
+	 lines and report the encoded value as an absolute integer to
+	 input subsystem.
+
+	 To compile this driver as a module, choose M here: the module
+	 will be called gpio_decoder.
+
+config INPUT_GPIO_VIBRA
+	tristate "GPIO vibrator support"
+	depends on GPIOLIB || COMPILE_TEST
+	select INPUT_FF_MEMLESS
+	help
+	  Say Y here to get support for GPIO based vibrator devices.
+
+	  If unsure, say N.
+
+	  To compile this driver as a module, choose M here: the module will be
+	  called gpio-vibra.
+
+config INPUT_COBALT_BTNS
+	tristate "Cobalt button interface"
+	depends on MIPS_COBALT
+	help
+	  Say Y here if you want to support MIPS Cobalt button interface.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called cobalt_btns.
+
+config INPUT_CPCAP_PWRBUTTON
+	tristate "CPCAP OnKey"
+	depends on MFD_CPCAP
+	help
+	  Say Y here if you want to enable power key reporting via the
+	  Motorola CPCAP chip.
+
+	  To compile this driver as a module, choose M here. The module will
+	  be called cpcap-pwrbutton.
+
+config INPUT_WISTRON_BTNS
+	tristate "x86 Wistron laptop button interface"
+	depends on X86_32 && !UML
+	select INPUT_SPARSEKMAP
+	select NEW_LEDS
+	select LEDS_CLASS
+	select CHECK_SIGNATURE
+	help
+	  Say Y here for support of Wistron laptop button interfaces, used on
+	  laptops of various brands, including Acer and Fujitsu-Siemens. If
+	  available, mail and wifi LEDs will be controllable via /sys/class/leds.
+
+	  To compile this driver as a module, choose M here: the module will
+	  be called wistron_btns.
+
+config INPUT_ATLAS_BTNS
+	tristate "x86 Atlas button interface"
+	depends on X86 && ACPI
+	help
+	  Say Y here for support of Atlas wallmount touchscreen buttons.
+	  The events will show up as scancodes F1 through F9 via evdev.
+
+	  To compile this driver as a module, choose M here: the module will
+	  be called atlas_btns.
+
+config INPUT_ATI_REMOTE2
+	tristate "ATI / Philips USB RF remote control"
+	depends on USB_ARCH_HAS_HCD
+	select USB
+	help
+	  Say Y here if you want to use an ATI or Philips USB RF remote control.
+	  These are RF remotes with USB receivers.
+	  ATI Remote Wonder II comes with some ATI's All-In-Wonder video cards
+	  and is also available as a separate product.
+	  This driver provides mouse pointer, left and right mouse buttons,
+	  and maps all the other remote buttons to keypress events.
+
+	  To compile this driver as a module, choose M here: the module will be
+	  called ati_remote2.
+
+config INPUT_KEYSPAN_REMOTE
+	tristate "Keyspan DMR USB remote control"
+	depends on USB_ARCH_HAS_HCD
+	select USB
+	help
+	  Say Y here if you want to use a Keyspan DMR USB remote control.
+	  Currently only the UIA-11 type of receiver has been tested.  The tag
+	  on the receiver that connects to the USB port should have a P/N that
+	  will tell you what type of DMR you have.  The UIA-10 type is not
+	  supported at this time.  This driver maps all buttons to keypress
+	  events.
+
+	  To compile this driver as a module, choose M here: the module will
+	  be called keyspan_remote.
+
+config INPUT_KXTJ9
+	tristate "Kionix KXTJ9 tri-axis digital accelerometer"
+	depends on I2C
+	help
+	  Say Y here to enable support for the Kionix KXTJ9 digital tri-axis
+	  accelerometer.
+
+	  To compile this driver as a module, choose M here: the module will
+	  be called kxtj9.
+
+config INPUT_POWERMATE
+	tristate "Griffin PowerMate and Contour Jog support"
+	depends on USB_ARCH_HAS_HCD
+	select USB
+	help
+	  Say Y here if you want to use Griffin PowerMate or Contour Jog devices.
+	  These are aluminum dials which can measure clockwise and anticlockwise
+	  rotation.  The dial also acts as a pushbutton.  The base contains an LED
+	  which can be instructed to pulse or to switch to a particular intensity.
+
+	  You can download userspace tools from
+	  <http://sowerbutts.com/powermate/>.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called powermate.
+
+config INPUT_YEALINK
+	tristate "Yealink usb-p1k voip phone"
+	depends on USB_ARCH_HAS_HCD
+	select USB
+	help
+	  Say Y here if you want to enable keyboard and LCD functions of the
+	  Yealink usb-p1k usb phones. The audio part is enabled by the generic
+	  usb sound driver, so you might want to enable that as well.
+
+	  For information about how to use these additional functions, see
+	  <file:Documentation/input/devices/yealink.rst>.
+
+	  To compile this driver as a module, choose M here: the module will be
+	  called yealink.
+
+config INPUT_CM109
+	tristate "C-Media CM109 USB I/O Controller"
+	depends on USB_ARCH_HAS_HCD
+	select USB
+	help
+	  Say Y here if you want to enable keyboard and buzzer functions of the
+	  C-Media CM109 usb phones. The audio part is enabled by the generic
+	  usb sound driver, so you might want to enable that as well.
+
+	  To compile this driver as a module, choose M here: the module will be
+	  called cm109.
+
+config INPUT_REGULATOR_HAPTIC
+	tristate "Regulator haptics support"
+	depends on REGULATOR
+	select INPUT_FF_MEMLESS
+	help
+	  This option enables device driver support for the haptic controlled
+	  by a regulator. This driver supports ff-memless interface
+	  from input framework.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called regulator-haptic.
+
+config INPUT_RETU_PWRBUTTON
+	tristate "Retu Power button Driver"
+	depends on MFD_RETU
+	help
+	  Say Y here if you want to enable power key reporting via the
+	  Retu chips found in Nokia Internet Tablets (770, N800, N810).
+
+	  To compile this driver as a module, choose M here. The module will
+	  be called retu-pwrbutton.
+
+config INPUT_TPS65218_PWRBUTTON
+	tristate "TPS65218 Power button driver"
+	depends on (MFD_TPS65217 || MFD_TPS65218)
+	help
+	  Say Y here if you want to enable power button reporting for
+	  TPS65217 and TPS65218 Power Management IC devices.
+
+	  To compile this driver as a module, choose M here. The module will
+	  be called tps65218-pwrbutton.
+
+config INPUT_AXP20X_PEK
+	tristate "X-Powers AXP20X power button driver"
+	depends on MFD_AXP20X
+	help
+	  Say Y here if you want to enable power key reporting via the
+	  AXP20X PMIC.
+
+	  To compile this driver as a module, choose M here. The module will
+	  be called axp20x-pek.
+
+
+config INPUT_TWL4030_PWRBUTTON
+	tristate "TWL4030 Power button Driver"
+	depends on TWL4030_CORE
+	help
+	  Say Y here if you want to enable power key reporting via the
+	  TWL4030 family of chips.
+
+	  To compile this driver as a module, choose M here. The module will
+	  be called twl4030_pwrbutton.
+
+config INPUT_TWL4030_VIBRA
+	tristate "Support for TWL4030 Vibrator"
+	depends on TWL4030_CORE
+	select MFD_TWL4030_AUDIO
+	select INPUT_FF_MEMLESS
+	help
+	  This option enables support for TWL4030 Vibrator Driver.
+
+	  To compile this driver as a module, choose M here. The module will
+	  be called twl4030_vibra.
+
+config INPUT_TWL6040_VIBRA
+	tristate "Support for TWL6040 Vibrator"
+	depends on TWL6040_CORE
+	select INPUT_FF_MEMLESS
+	help
+	  This option enables support for TWL6040 Vibrator Driver.
+
+	  To compile this driver as a module, choose M here. The module will
+	  be called twl6040_vibra.
+
+config INPUT_UINPUT
+	tristate "User level driver support"
+	help
+	  Say Y here if you want to support user level drivers for input
+	  subsystem accessible under char device 10:223 - /dev/input/uinput.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called uinput.
+
+config INPUT_SGI_BTNS
+	tristate "SGI Indy/O2 volume button interface"
+	depends on SGI_IP22 || SGI_IP32
+	help
+	  Say Y here if you want to support SGI Indy/O2 volume button interface.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called sgi_btns.
+
+config HP_SDC_RTC
+	tristate "HP SDC Real Time Clock"
+	depends on (GSC || HP300) && SERIO
+	select HP_SDC
+	help
+	  Say Y here if you want to support the built-in real time clock
+	  of the HP SDC controller.
+
+config INPUT_PALMAS_PWRBUTTON
+	tristate "Palmas Power button Driver"
+	depends on MFD_PALMAS
+	help
+	  Say Y here if you want to enable power key reporting via the
+	  Palmas family of PMICs.
+
+	  To compile this driver as a module, choose M here. The module will
+	  be called palmas_pwrbutton.
+
+config INPUT_PCF50633_PMU
+	tristate "PCF50633 PMU events"
+	depends on MFD_PCF50633
+	help
+	 Say Y to include support for delivering  PMU events via  input
+	 layer on NXP PCF50633.
+
+config INPUT_PCF8574
+	tristate "PCF8574 Keypad input device"
+	depends on I2C
+	help
+	  Say Y here if you want to support a keypad connected via I2C
+	  with a PCF8574.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called pcf8574_keypad.
+
+config INPUT_PWM_BEEPER
+	tristate "PWM beeper support"
+	depends on PWM
+	help
+	  Say Y here to get support for PWM based beeper devices.
+
+	  If unsure, say N.
+
+	  To compile this driver as a module, choose M here: the module will be
+	  called pwm-beeper.
+
+config INPUT_PWM_VIBRA
+	tristate "PWM vibrator support"
+	depends on PWM
+	select INPUT_FF_MEMLESS
+	help
+	  Say Y here to get support for PWM based vibrator devices.
+
+	  If unsure, say N.
+
+	  To compile this driver as a module, choose M here: the module will be
+	  called pwm-vibra.
+
+config INPUT_RK805_PWRKEY
+	tristate "Rockchip RK805 PMIC power key support"
+	depends on MFD_RK808
+	help
+	  Select this option to enable power key driver for RK805.
+
+	  If unsure, say N.
+
+	  To compile this driver as a module, choose M here: the module will be
+	  called rk805_pwrkey.
+
+config INPUT_GPIO_ROTARY_ENCODER
+	tristate "Rotary encoders connected to GPIO pins"
+	depends on GPIOLIB || COMPILE_TEST
+	help
+	  Say Y here to add support for rotary encoders connected to GPIO lines.
+	  Check file:Documentation/input/devices/rotary-encoder.rst for more
+	  information.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called rotary_encoder.
+
+config INPUT_RB532_BUTTON
+	tristate "Mikrotik Routerboard 532 button interface"
+	depends on MIKROTIK_RB532
+	depends on GPIOLIB
+	help
+	  Say Y here if you want support for the S1 button built into
+	  Mikrotik's Routerboard 532.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called rb532_button.
+
+config INPUT_DA7280_HAPTICS
+	tristate "Dialog Semiconductor DA7280 haptics support"
+	depends on INPUT && I2C
+	select REGMAP_I2C
+	help
+	  Say Y to enable support for the Dialog DA7280 haptics driver.
+	  The haptics can be controlled by PWM or GPIO
+	  with I2C communication.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called da7280.
+
+config INPUT_DA9052_ONKEY
+	tristate "Dialog DA9052/DA9053 Onkey"
+	depends on PMIC_DA9052
+	help
+	  Support the ONKEY of Dialog DA9052 PMICs as an input device
+	  reporting power button status.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called da9052_onkey.
+
+config INPUT_DA9055_ONKEY
+	tristate "Dialog Semiconductor DA9055 ONKEY"
+	depends on MFD_DA9055
+	help
+	  Support the ONKEY of DA9055 PMICs as an input device
+	  reporting power button status.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called da9055_onkey.
+
+config INPUT_DA9063_ONKEY
+	tristate "Dialog DA9063/62/61 OnKey"
+	depends on MFD_DA9063 || MFD_DA9062
+	help
+	  Support the ONKEY of Dialog DA9063, DA9062 and DA9061 Power
+	  Management ICs as an input device capable of reporting the
+	  power button status.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called da9063_onkey.
+
+config INPUT_DM355EVM
+	tristate "TI DaVinci DM355 EVM Keypad and IR Remote"
+	depends on MFD_DM355EVM_MSP
+	select INPUT_SPARSEKMAP
+	help
+	  Supports the pushbuttons and IR remote used with
+	  the DM355 EVM board.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called dm355evm_keys.
+
+config INPUT_WM831X_ON
+	tristate "WM831X ON pin"
+	depends on MFD_WM831X
+	help
+	  Support the ON pin of WM831X PMICs as an input device
+	  reporting power button status.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called wm831x_on.
+
+config INPUT_PCAP
+	tristate "Motorola EZX PCAP misc input events"
+	depends on EZX_PCAP
+	help
+	  Say Y here if you want to use Power key and Headphone button
+	  on Motorola EZX phones.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called pcap_keys.
+
+config INPUT_ADXL34X
+	tristate "Analog Devices ADXL34x Three-Axis Digital Accelerometer"
+	default n
+	help
+	  Say Y here if you have a Accelerometer interface using the
+	  ADXL345/6 controller, and your board-specific initialization
+	  code includes that in its table of devices.
+
+	  This driver can use either I2C or SPI communication to the
+	  ADXL345/6 controller.  Select the appropriate method for
+	  your system.
+
+	  If unsure, say N (but it's safe to say "Y").
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called adxl34x.
+
+config INPUT_ADXL34X_I2C
+	tristate "support I2C bus connection"
+	depends on INPUT_ADXL34X && I2C
+	default y
+	help
+	  Say Y here if you have ADXL345/6 hooked to an I2C bus.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called adxl34x-i2c.
+
+config INPUT_ADXL34X_SPI
+	tristate "support SPI bus connection"
+	depends on INPUT_ADXL34X && SPI
+	default y
+	help
+	  Say Y here if you have ADXL345/6 hooked to a SPI bus.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called adxl34x-spi.
+
+config INPUT_IBM_PANEL
+	tristate "IBM Operation Panel driver"
+	depends on I2C && I2C_SLAVE
+	help
+	  Say Y here if you have an IBM Operation Panel connected to your system
+	  over I2C. The panel is typically connected only to a system's service
+	  processor (BMC).
+
+	  If unsure, say N.
+
+	  The Operation Panel is a controller with some buttons and an LCD
+	  display that allows someone with physical access to the system to
+	  perform various administrative tasks. This driver only supports the part
+	  of the controller that sends commands to the system.
+
+	  To compile this driver as a module, choose M here: the module will be
+	  called ibm-panel.
+
+config INPUT_IMS_PCU
+	tristate "IMS Passenger Control Unit driver"
+	depends on USB
+	depends on LEDS_CLASS
+	help
+	  Say Y here if you have system with IMS Rave Passenger Control Unit.
+
+	  To compile this driver as a module, choose M here: the module will be
+	  called ims_pcu.
+
+config INPUT_IQS269A
+	tristate "Azoteq IQS269A capacitive touch controller"
+	depends on I2C
+	select REGMAP_I2C
+	help
+	  Say Y to enable support for the Azoteq IQS269A capacitive
+	  touch controller.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called iqs269a.
+
+config INPUT_IQS626A
+	tristate "Azoteq IQS626A capacitive touch controller"
+	depends on I2C
+	select REGMAP_I2C
+	help
+	  Say Y to enable support for the Azoteq IQS626A capacitive
+	  touch controller.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called iqs626a.
+
+config INPUT_IQS7222
+	tristate "Azoteq IQS7222A/B/C capacitive touch controller"
+	depends on I2C
+	help
+	  Say Y to enable support for the Azoteq IQS7222A/B/C family
+	  of capacitive touch controllers.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called iqs7222.
+
+config INPUT_CMA3000
+	tristate "VTI CMA3000 Tri-axis accelerometer"
+	help
+	  Say Y here if you want to use VTI CMA3000_D0x Accelerometer
+	  driver
+
+	  This driver currently only supports I2C interface to the
+	  controller. Also select the I2C method.
+
+	  If unsure, say N
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called cma3000_d0x.
+
+config INPUT_CMA3000_I2C
+	tristate "Support I2C bus connection"
+	depends on INPUT_CMA3000 && I2C
+	help
+	  Say Y here if you want to use VTI CMA3000_D0x Accelerometer
+	  through I2C interface.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called cma3000_d0x_i2c.
+
+config INPUT_XEN_KBDDEV_FRONTEND
+	tristate "Xen virtual keyboard and mouse support"
+	depends on XEN
+	default y
+	select XEN_XENBUS_FRONTEND
+	help
+	  This driver implements the front-end of the Xen virtual
+	  keyboard and mouse device driver.  It communicates with a back-end
+	  in another domain.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called xen-kbdfront.
+
+config INPUT_IDEAPAD_SLIDEBAR
+	tristate "IdeaPad Laptop Slidebar"
+	depends on INPUT
+	depends on SERIO_I8042
+	help
+	  Say Y here if you have an IdeaPad laptop with a slidebar.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called ideapad_slidebar.
+
+config INPUT_SOC_BUTTON_ARRAY
+	tristate "Windows-compatible SoC Button Array"
+	depends on KEYBOARD_GPIO && ACPI
+	help
+	  Say Y here if you have a SoC-based tablet that originally runs
+	  Windows 8 or a Microsoft Surface Book 2, Pro 5, Laptop 1 or later.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called soc_button_array.
+
+config INPUT_DRV260X_HAPTICS
+	tristate "TI DRV260X haptics support"
+	depends on INPUT && I2C
+	depends on GPIOLIB || COMPILE_TEST
+	select INPUT_FF_MEMLESS
+	select REGMAP_I2C
+	help
+	  Say Y to enable support for the TI DRV260X haptics driver.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called drv260x-haptics.
+
+config INPUT_DRV2665_HAPTICS
+	tristate "TI DRV2665 haptics support"
+	depends on INPUT && I2C
+	select INPUT_FF_MEMLESS
+	select REGMAP_I2C
+	help
+	  Say Y to enable support for the TI DRV2665 haptics driver.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called drv2665-haptics.
+
+config INPUT_DRV2667_HAPTICS
+	tristate "TI DRV2667 haptics support"
+	depends on INPUT && I2C
+	select INPUT_FF_MEMLESS
+	select REGMAP_I2C
+	help
+	  Say Y to enable support for the TI DRV2667 haptics driver.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called drv2667-haptics.
+
+config INPUT_HISI_POWERKEY
+	tristate "Hisilicon PMIC ONKEY support"
+	depends on ARCH_HISI || COMPILE_TEST
+	help
+	  Say Y to enable support for PMIC ONKEY.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called hisi_powerkey.
+
+config INPUT_RAVE_SP_PWRBUTTON
+	tristate "RAVE SP Power button Driver"
+	depends on RAVE_SP_CORE
+	help
+	  Say Y here if you want to enable power key reporting from RAVE SP
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called rave-sp-pwrbutton.
+
+config INPUT_SC27XX_VIBRA
+	tristate "Spreadtrum sc27xx vibrator support"
+	depends on MFD_SC27XX_PMIC || COMPILE_TEST
+	select INPUT_FF_MEMLESS
+	help
+	  This option enables support for Spreadtrum sc27xx vibrator driver.
+
+	  To compile this driver as a module, choose M here. The module will
+	  be called sc27xx_vibra.
+
+config INPUT_RT5120_PWRKEY
+	tristate "RT5120 PMIC power key support"
+	depends on MFD_RT5120 || COMPILE_TEST
+	help
+	  This enables support for RT5120 PMIC power key driver.
+
+	  To compile this driver as a module, choose M here. the module will
+	  be called rt5120-pwrkey.
+
+config INPUT_STPMIC1_ONKEY
+	tristate "STPMIC1 PMIC Onkey support"
+	depends on MFD_STPMIC1
+	help
+	  Say Y to enable support of onkey embedded into STPMIC1 PMIC. onkey
+	  can be used to wakeup from low power modes and force a shut-down on
+	  long press.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called stpmic1_onkey.
+
+endif
diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile
new file mode 100644
index 000000000..6abefc410
--- /dev/null
+++ b/drivers/input/misc/Makefile
@@ -0,0 +1,91 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Makefile for the input misc drivers.
+#
+
+# Each configuration option enables a list of files.
+
+obj-$(CONFIG_INPUT_88PM860X_ONKEY)	+= 88pm860x_onkey.o
+obj-$(CONFIG_INPUT_88PM80X_ONKEY)	+= 88pm80x_onkey.o
+obj-$(CONFIG_INPUT_AB8500_PONKEY)	+= ab8500-ponkey.o
+obj-$(CONFIG_INPUT_AD714X)		+= ad714x.o
+obj-$(CONFIG_INPUT_AD714X_I2C)		+= ad714x-i2c.o
+obj-$(CONFIG_INPUT_AD714X_SPI)		+= ad714x-spi.o
+obj-$(CONFIG_INPUT_ADXL34X)		+= adxl34x.o
+obj-$(CONFIG_INPUT_ADXL34X_I2C)		+= adxl34x-i2c.o
+obj-$(CONFIG_INPUT_ADXL34X_SPI)		+= adxl34x-spi.o
+obj-$(CONFIG_INPUT_APANEL)		+= apanel.o
+obj-$(CONFIG_INPUT_ARIEL_PWRBUTTON)	+= ariel-pwrbutton.o
+obj-$(CONFIG_INPUT_ARIZONA_HAPTICS)	+= arizona-haptics.o
+obj-$(CONFIG_INPUT_ATC260X_ONKEY)	+= atc260x-onkey.o
+obj-$(CONFIG_INPUT_ATI_REMOTE2)		+= ati_remote2.o
+obj-$(CONFIG_INPUT_ATLAS_BTNS)		+= atlas_btns.o
+obj-$(CONFIG_INPUT_ATMEL_CAPTOUCH)	+= atmel_captouch.o
+obj-$(CONFIG_INPUT_BMA150)		+= bma150.o
+obj-$(CONFIG_INPUT_CM109)		+= cm109.o
+obj-$(CONFIG_INPUT_CMA3000)		+= cma3000_d0x.o
+obj-$(CONFIG_INPUT_CMA3000_I2C)		+= cma3000_d0x_i2c.o
+obj-$(CONFIG_INPUT_COBALT_BTNS)		+= cobalt_btns.o
+obj-$(CONFIG_INPUT_CPCAP_PWRBUTTON)	+= cpcap-pwrbutton.o
+obj-$(CONFIG_INPUT_DA7280_HAPTICS)	+= da7280.o
+obj-$(CONFIG_INPUT_DA9052_ONKEY)	+= da9052_onkey.o
+obj-$(CONFIG_INPUT_DA9055_ONKEY)	+= da9055_onkey.o
+obj-$(CONFIG_INPUT_DA9063_ONKEY)	+= da9063_onkey.o
+obj-$(CONFIG_INPUT_DM355EVM)		+= dm355evm_keys.o
+obj-$(CONFIG_INPUT_E3X0_BUTTON)		+= e3x0-button.o
+obj-$(CONFIG_INPUT_DRV260X_HAPTICS)	+= drv260x.o
+obj-$(CONFIG_INPUT_DRV2665_HAPTICS)	+= drv2665.o
+obj-$(CONFIG_INPUT_DRV2667_HAPTICS)	+= drv2667.o
+obj-$(CONFIG_INPUT_GPIO_BEEPER)		+= gpio-beeper.o
+obj-$(CONFIG_INPUT_GPIO_DECODER)	+= gpio_decoder.o
+obj-$(CONFIG_INPUT_GPIO_VIBRA)		+= gpio-vibra.o
+obj-$(CONFIG_INPUT_HISI_POWERKEY)	+= hisi_powerkey.o
+obj-$(CONFIG_HP_SDC_RTC)		+= hp_sdc_rtc.o
+obj-$(CONFIG_INPUT_IBM_PANEL)		+= ibm-panel.o
+obj-$(CONFIG_INPUT_IMS_PCU)		+= ims-pcu.o
+obj-$(CONFIG_INPUT_IQS269A)		+= iqs269a.o
+obj-$(CONFIG_INPUT_IQS626A)		+= iqs626a.o
+obj-$(CONFIG_INPUT_IQS7222)		+= iqs7222.o
+obj-$(CONFIG_INPUT_KEYSPAN_REMOTE)	+= keyspan_remote.o
+obj-$(CONFIG_INPUT_KXTJ9)		+= kxtj9.o
+obj-$(CONFIG_INPUT_M68K_BEEP)		+= m68kspkr.o
+obj-$(CONFIG_INPUT_MAX77650_ONKEY)	+= max77650-onkey.o
+obj-$(CONFIG_INPUT_MAX77693_HAPTIC)	+= max77693-haptic.o
+obj-$(CONFIG_INPUT_MAX8925_ONKEY)	+= max8925_onkey.o
+obj-$(CONFIG_INPUT_MAX8997_HAPTIC)	+= max8997_haptic.o
+obj-$(CONFIG_INPUT_MC13783_PWRBUTTON)	+= mc13783-pwrbutton.o
+obj-$(CONFIG_INPUT_MMA8450)		+= mma8450.o
+obj-$(CONFIG_INPUT_PALMAS_PWRBUTTON)	+= palmas-pwrbutton.o
+obj-$(CONFIG_INPUT_PCAP)		+= pcap_keys.o
+obj-$(CONFIG_INPUT_PCF50633_PMU)	+= pcf50633-input.o
+obj-$(CONFIG_INPUT_PCF8574)		+= pcf8574_keypad.o
+obj-$(CONFIG_INPUT_PCSPKR)		+= pcspkr.o
+obj-$(CONFIG_INPUT_PM8941_PWRKEY)	+= pm8941-pwrkey.o
+obj-$(CONFIG_INPUT_PM8XXX_VIBRATOR)	+= pm8xxx-vibrator.o
+obj-$(CONFIG_INPUT_PMIC8XXX_PWRKEY)	+= pmic8xxx-pwrkey.o
+obj-$(CONFIG_INPUT_POWERMATE)		+= powermate.o
+obj-$(CONFIG_INPUT_PWM_BEEPER)		+= pwm-beeper.o
+obj-$(CONFIG_INPUT_PWM_VIBRA)		+= pwm-vibra.o
+obj-$(CONFIG_INPUT_RAVE_SP_PWRBUTTON)	+= rave-sp-pwrbutton.o
+obj-$(CONFIG_INPUT_RB532_BUTTON)	+= rb532_button.o
+obj-$(CONFIG_INPUT_REGULATOR_HAPTIC)	+= regulator-haptic.o
+obj-$(CONFIG_INPUT_RETU_PWRBUTTON)	+= retu-pwrbutton.o
+obj-$(CONFIG_INPUT_RT5120_PWRKEY)	+= rt5120-pwrkey.o
+obj-$(CONFIG_INPUT_AXP20X_PEK)		+= axp20x-pek.o
+obj-$(CONFIG_INPUT_GPIO_ROTARY_ENCODER)	+= rotary_encoder.o
+obj-$(CONFIG_INPUT_RK805_PWRKEY)	+= rk805-pwrkey.o
+obj-$(CONFIG_INPUT_SC27XX_VIBRA)	+= sc27xx-vibra.o
+obj-$(CONFIG_INPUT_SGI_BTNS)		+= sgi_btns.o
+obj-$(CONFIG_INPUT_SOC_BUTTON_ARRAY)	+= soc_button_array.o
+obj-$(CONFIG_INPUT_SPARCSPKR)		+= sparcspkr.o
+obj-$(CONFIG_INPUT_STPMIC1_ONKEY)  	+= stpmic1_onkey.o
+obj-$(CONFIG_INPUT_TPS65218_PWRBUTTON)	+= tps65218-pwrbutton.o
+obj-$(CONFIG_INPUT_TWL4030_PWRBUTTON)	+= twl4030-pwrbutton.o
+obj-$(CONFIG_INPUT_TWL4030_VIBRA)	+= twl4030-vibra.o
+obj-$(CONFIG_INPUT_TWL6040_VIBRA)	+= twl6040-vibra.o
+obj-$(CONFIG_INPUT_UINPUT)		+= uinput.o
+obj-$(CONFIG_INPUT_WISTRON_BTNS)	+= wistron_btns.o
+obj-$(CONFIG_INPUT_WM831X_ON)		+= wm831x-on.o
+obj-$(CONFIG_INPUT_XEN_KBDDEV_FRONTEND)	+= xen-kbdfront.o
+obj-$(CONFIG_INPUT_YEALINK)		+= yealink.o
+obj-$(CONFIG_INPUT_IDEAPAD_SLIDEBAR)	+= ideapad_slidebar.o
diff --git a/drivers/input/misc/ab8500-ponkey.c b/drivers/input/misc/ab8500-ponkey.c
new file mode 100644
index 000000000..a9b901368
--- /dev/null
+++ b/drivers/input/misc/ab8500-ponkey.c
@@ -0,0 +1,130 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) ST-Ericsson SA 2010
+ *
+ * Author: Sundar Iyer <sundar.iyer@stericsson.com> for ST-Ericsson
+ *
+ * AB8500 Power-On Key handler
+ */
+
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/mfd/abx500/ab8500.h>
+#include <linux/of.h>
+#include <linux/slab.h>
+
+/**
+ * struct ab8500_ponkey - ab8500 ponkey information
+ * @idev: pointer to input device
+ * @ab8500: ab8500 parent
+ * @irq_dbf: irq number for falling transition
+ * @irq_dbr: irq number for rising transition
+ */
+struct ab8500_ponkey {
+	struct input_dev	*idev;
+	struct ab8500		*ab8500;
+	int			irq_dbf;
+	int			irq_dbr;
+};
+
+/* AB8500 gives us an interrupt when ONKEY is held */
+static irqreturn_t ab8500_ponkey_handler(int irq, void *data)
+{
+	struct ab8500_ponkey *ponkey = data;
+
+	if (irq == ponkey->irq_dbf)
+		input_report_key(ponkey->idev, KEY_POWER, true);
+	else if (irq == ponkey->irq_dbr)
+		input_report_key(ponkey->idev, KEY_POWER, false);
+
+	input_sync(ponkey->idev);
+
+	return IRQ_HANDLED;
+}
+
+static int ab8500_ponkey_probe(struct platform_device *pdev)
+{
+	struct ab8500 *ab8500 = dev_get_drvdata(pdev->dev.parent);
+	struct ab8500_ponkey *ponkey;
+	struct input_dev *input;
+	int irq_dbf, irq_dbr;
+	int error;
+
+	irq_dbf = platform_get_irq_byname(pdev, "ONKEY_DBF");
+	if (irq_dbf < 0)
+		return irq_dbf;
+
+	irq_dbr = platform_get_irq_byname(pdev, "ONKEY_DBR");
+	if (irq_dbr < 0)
+		return irq_dbr;
+
+	ponkey = devm_kzalloc(&pdev->dev, sizeof(struct ab8500_ponkey),
+			      GFP_KERNEL);
+	if (!ponkey)
+		return -ENOMEM;
+
+	input = devm_input_allocate_device(&pdev->dev);
+	if (!input)
+		return -ENOMEM;
+
+	ponkey->idev = input;
+	ponkey->ab8500 = ab8500;
+	ponkey->irq_dbf = irq_dbf;
+	ponkey->irq_dbr = irq_dbr;
+
+	input->name = "AB8500 POn(PowerOn) Key";
+	input->dev.parent = &pdev->dev;
+
+	input_set_capability(input, EV_KEY, KEY_POWER);
+
+	error = devm_request_any_context_irq(&pdev->dev, ponkey->irq_dbf,
+					     ab8500_ponkey_handler, 0,
+					     "ab8500-ponkey-dbf", ponkey);
+	if (error < 0) {
+		dev_err(ab8500->dev, "Failed to request dbf IRQ#%d: %d\n",
+			ponkey->irq_dbf, error);
+		return error;
+	}
+
+	error = devm_request_any_context_irq(&pdev->dev, ponkey->irq_dbr,
+					     ab8500_ponkey_handler, 0,
+					     "ab8500-ponkey-dbr", ponkey);
+	if (error < 0) {
+		dev_err(ab8500->dev, "Failed to request dbr IRQ#%d: %d\n",
+			ponkey->irq_dbr, error);
+		return error;
+	}
+
+	error = input_register_device(ponkey->idev);
+	if (error) {
+		dev_err(ab8500->dev, "Can't register input device: %d\n", error);
+		return error;
+	}
+
+	return 0;
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id ab8500_ponkey_match[] = {
+	{ .compatible = "stericsson,ab8500-ponkey", },
+	{}
+};
+MODULE_DEVICE_TABLE(of, ab8500_ponkey_match);
+#endif
+
+static struct platform_driver ab8500_ponkey_driver = {
+	.driver		= {
+		.name	= "ab8500-poweron-key",
+		.of_match_table = of_match_ptr(ab8500_ponkey_match),
+	},
+	.probe		= ab8500_ponkey_probe,
+};
+module_platform_driver(ab8500_ponkey_driver);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Sundar Iyer <sundar.iyer@stericsson.com>");
+MODULE_DESCRIPTION("ST-Ericsson AB8500 Power-ON(Pon) Key driver");
diff --git a/drivers/input/misc/ad714x-i2c.c b/drivers/input/misc/ad714x-i2c.c
new file mode 100644
index 000000000..efeef1350
--- /dev/null
+++ b/drivers/input/misc/ad714x-i2c.c
@@ -0,0 +1,110 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * AD714X CapTouch Programmable Controller driver (I2C bus)
+ *
+ * Copyright 2009-2011 Analog Devices Inc.
+ */
+
+#include <linux/input.h>	/* BUS_I2C */
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/pm.h>
+#include "ad714x.h"
+
+static int __maybe_unused ad714x_i2c_suspend(struct device *dev)
+{
+	return ad714x_disable(i2c_get_clientdata(to_i2c_client(dev)));
+}
+
+static int __maybe_unused ad714x_i2c_resume(struct device *dev)
+{
+	return ad714x_enable(i2c_get_clientdata(to_i2c_client(dev)));
+}
+
+static SIMPLE_DEV_PM_OPS(ad714x_i2c_pm, ad714x_i2c_suspend, ad714x_i2c_resume);
+
+static int ad714x_i2c_write(struct ad714x_chip *chip,
+			    unsigned short reg, unsigned short data)
+{
+	struct i2c_client *client = to_i2c_client(chip->dev);
+	int error;
+
+	chip->xfer_buf[0] = cpu_to_be16(reg);
+	chip->xfer_buf[1] = cpu_to_be16(data);
+
+	error = i2c_master_send(client, (u8 *)chip->xfer_buf,
+				2 * sizeof(*chip->xfer_buf));
+	if (unlikely(error < 0)) {
+		dev_err(&client->dev, "I2C write error: %d\n", error);
+		return error;
+	}
+
+	return 0;
+}
+
+static int ad714x_i2c_read(struct ad714x_chip *chip,
+			   unsigned short reg, unsigned short *data, size_t len)
+{
+	struct i2c_client *client = to_i2c_client(chip->dev);
+	int i;
+	int error;
+
+	chip->xfer_buf[0] = cpu_to_be16(reg);
+
+	error = i2c_master_send(client, (u8 *)chip->xfer_buf,
+				sizeof(*chip->xfer_buf));
+	if (error >= 0)
+		error = i2c_master_recv(client, (u8 *)chip->xfer_buf,
+					len * sizeof(*chip->xfer_buf));
+
+	if (unlikely(error < 0)) {
+		dev_err(&client->dev, "I2C read error: %d\n", error);
+		return error;
+	}
+
+	for (i = 0; i < len; i++)
+		data[i] = be16_to_cpu(chip->xfer_buf[i]);
+
+	return 0;
+}
+
+static int ad714x_i2c_probe(struct i2c_client *client,
+					const struct i2c_device_id *id)
+{
+	struct ad714x_chip *chip;
+
+	chip = ad714x_probe(&client->dev, BUS_I2C, client->irq,
+			    ad714x_i2c_read, ad714x_i2c_write);
+	if (IS_ERR(chip))
+		return PTR_ERR(chip);
+
+	i2c_set_clientdata(client, chip);
+
+	return 0;
+}
+
+static const struct i2c_device_id ad714x_id[] = {
+	{ "ad7142_captouch", 0 },
+	{ "ad7143_captouch", 0 },
+	{ "ad7147_captouch", 0 },
+	{ "ad7147a_captouch", 0 },
+	{ "ad7148_captouch", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, ad714x_id);
+
+static struct i2c_driver ad714x_i2c_driver = {
+	.driver = {
+		.name = "ad714x_captouch",
+		.pm   = &ad714x_i2c_pm,
+	},
+	.probe    = ad714x_i2c_probe,
+	.id_table = ad714x_id,
+};
+
+module_i2c_driver(ad714x_i2c_driver);
+
+MODULE_DESCRIPTION("Analog Devices AD714X Capacitance Touch Sensor I2C Bus Driver");
+MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/misc/ad714x-spi.c b/drivers/input/misc/ad714x-spi.c
new file mode 100644
index 000000000..7d3bf4346
--- /dev/null
+++ b/drivers/input/misc/ad714x-spi.c
@@ -0,0 +1,115 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * AD714X CapTouch Programmable Controller driver (SPI bus)
+ *
+ * Copyright 2009-2011 Analog Devices Inc.
+ */
+
+#include <linux/input.h>	/* BUS_SPI */
+#include <linux/module.h>
+#include <linux/spi/spi.h>
+#include <linux/pm.h>
+#include <linux/types.h>
+#include "ad714x.h"
+
+#define AD714x_SPI_CMD_PREFIX      0xE000   /* bits 15:11 */
+#define AD714x_SPI_READ            BIT(10)
+
+static int __maybe_unused ad714x_spi_suspend(struct device *dev)
+{
+	return ad714x_disable(spi_get_drvdata(to_spi_device(dev)));
+}
+
+static int __maybe_unused ad714x_spi_resume(struct device *dev)
+{
+	return ad714x_enable(spi_get_drvdata(to_spi_device(dev)));
+}
+
+static SIMPLE_DEV_PM_OPS(ad714x_spi_pm, ad714x_spi_suspend, ad714x_spi_resume);
+
+static int ad714x_spi_read(struct ad714x_chip *chip,
+			   unsigned short reg, unsigned short *data, size_t len)
+{
+	struct spi_device *spi = to_spi_device(chip->dev);
+	struct spi_message message;
+	struct spi_transfer xfer[2];
+	int i;
+	int error;
+
+	spi_message_init(&message);
+	memset(xfer, 0, sizeof(xfer));
+
+	chip->xfer_buf[0] = cpu_to_be16(AD714x_SPI_CMD_PREFIX |
+					AD714x_SPI_READ | reg);
+	xfer[0].tx_buf = &chip->xfer_buf[0];
+	xfer[0].len = sizeof(chip->xfer_buf[0]);
+	spi_message_add_tail(&xfer[0], &message);
+
+	xfer[1].rx_buf = &chip->xfer_buf[1];
+	xfer[1].len = sizeof(chip->xfer_buf[1]) * len;
+	spi_message_add_tail(&xfer[1], &message);
+
+	error = spi_sync(spi, &message);
+	if (unlikely(error)) {
+		dev_err(chip->dev, "SPI read error: %d\n", error);
+		return error;
+	}
+
+	for (i = 0; i < len; i++)
+		data[i] = be16_to_cpu(chip->xfer_buf[i + 1]);
+
+	return 0;
+}
+
+static int ad714x_spi_write(struct ad714x_chip *chip,
+			    unsigned short reg, unsigned short data)
+{
+	struct spi_device *spi = to_spi_device(chip->dev);
+	int error;
+
+	chip->xfer_buf[0] = cpu_to_be16(AD714x_SPI_CMD_PREFIX | reg);
+	chip->xfer_buf[1] = cpu_to_be16(data);
+
+	error = spi_write(spi, (u8 *)chip->xfer_buf,
+			  2 * sizeof(*chip->xfer_buf));
+	if (unlikely(error)) {
+		dev_err(chip->dev, "SPI write error: %d\n", error);
+		return error;
+	}
+
+	return 0;
+}
+
+static int ad714x_spi_probe(struct spi_device *spi)
+{
+	struct ad714x_chip *chip;
+	int err;
+
+	spi->bits_per_word = 8;
+	err = spi_setup(spi);
+	if (err < 0)
+		return err;
+
+	chip = ad714x_probe(&spi->dev, BUS_SPI, spi->irq,
+			    ad714x_spi_read, ad714x_spi_write);
+	if (IS_ERR(chip))
+		return PTR_ERR(chip);
+
+	spi_set_drvdata(spi, chip);
+
+	return 0;
+}
+
+static struct spi_driver ad714x_spi_driver = {
+	.driver = {
+		.name	= "ad714x_captouch",
+		.pm	= &ad714x_spi_pm,
+	},
+	.probe		= ad714x_spi_probe,
+};
+
+module_spi_driver(ad714x_spi_driver);
+
+MODULE_DESCRIPTION("Analog Devices AD714X Capacitance Touch Sensor SPI Bus Driver");
+MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/misc/ad714x.c b/drivers/input/misc/ad714x.c
new file mode 100644
index 000000000..43132d98f
--- /dev/null
+++ b/drivers/input/misc/ad714x.c
@@ -0,0 +1,1209 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * AD714X CapTouch Programmable Controller driver supporting AD7142/3/7/8/7A
+ *
+ * Copyright 2009-2011 Analog Devices Inc.
+ */
+
+#include <linux/device.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/slab.h>
+#include <linux/input/ad714x.h>
+#include <linux/module.h>
+#include "ad714x.h"
+
+#define AD714X_PWR_CTRL           0x0
+#define AD714X_STG_CAL_EN_REG     0x1
+#define AD714X_AMB_COMP_CTRL0_REG 0x2
+#define AD714X_PARTID_REG         0x17
+#define AD7142_PARTID             0xE620
+#define AD7143_PARTID             0xE630
+#define AD7147_PARTID             0x1470
+#define AD7148_PARTID             0x1480
+#define AD714X_STAGECFG_REG       0x80
+#define AD714X_SYSCFG_REG         0x0
+
+#define STG_LOW_INT_EN_REG     0x5
+#define STG_HIGH_INT_EN_REG    0x6
+#define STG_COM_INT_EN_REG     0x7
+#define STG_LOW_INT_STA_REG    0x8
+#define STG_HIGH_INT_STA_REG   0x9
+#define STG_COM_INT_STA_REG    0xA
+
+#define CDC_RESULT_S0          0xB
+#define CDC_RESULT_S1          0xC
+#define CDC_RESULT_S2          0xD
+#define CDC_RESULT_S3          0xE
+#define CDC_RESULT_S4          0xF
+#define CDC_RESULT_S5          0x10
+#define CDC_RESULT_S6          0x11
+#define CDC_RESULT_S7          0x12
+#define CDC_RESULT_S8          0x13
+#define CDC_RESULT_S9          0x14
+#define CDC_RESULT_S10         0x15
+#define CDC_RESULT_S11         0x16
+
+#define STAGE0_AMBIENT		0xF1
+#define STAGE1_AMBIENT		0x115
+#define STAGE2_AMBIENT		0x139
+#define STAGE3_AMBIENT		0x15D
+#define STAGE4_AMBIENT		0x181
+#define STAGE5_AMBIENT		0x1A5
+#define STAGE6_AMBIENT		0x1C9
+#define STAGE7_AMBIENT		0x1ED
+#define STAGE8_AMBIENT		0x211
+#define STAGE9_AMBIENT		0x234
+#define STAGE10_AMBIENT		0x259
+#define STAGE11_AMBIENT		0x27D
+
+#define PER_STAGE_REG_NUM      36
+#define STAGE_CFGREG_NUM       8
+#define SYS_CFGREG_NUM         8
+
+/*
+ * driver information which will be used to maintain the software flow
+ */
+enum ad714x_device_state { IDLE, JITTER, ACTIVE, SPACE };
+
+struct ad714x_slider_drv {
+	int highest_stage;
+	int abs_pos;
+	int flt_pos;
+	enum ad714x_device_state state;
+	struct input_dev *input;
+};
+
+struct ad714x_wheel_drv {
+	int abs_pos;
+	int flt_pos;
+	int pre_highest_stage;
+	int highest_stage;
+	enum ad714x_device_state state;
+	struct input_dev *input;
+};
+
+struct ad714x_touchpad_drv {
+	int x_highest_stage;
+	int x_flt_pos;
+	int x_abs_pos;
+	int y_highest_stage;
+	int y_flt_pos;
+	int y_abs_pos;
+	int left_ep;
+	int left_ep_val;
+	int right_ep;
+	int right_ep_val;
+	int top_ep;
+	int top_ep_val;
+	int bottom_ep;
+	int bottom_ep_val;
+	enum ad714x_device_state state;
+	struct input_dev *input;
+};
+
+struct ad714x_button_drv {
+	enum ad714x_device_state state;
+	/*
+	 * Unlike slider/wheel/touchpad, all buttons point to
+	 * same input_dev instance
+	 */
+	struct input_dev *input;
+};
+
+struct ad714x_driver_data {
+	struct ad714x_slider_drv *slider;
+	struct ad714x_wheel_drv *wheel;
+	struct ad714x_touchpad_drv *touchpad;
+	struct ad714x_button_drv *button;
+};
+
+/*
+ * information to integrate all things which will be private data
+ * of spi/i2c device
+ */
+
+static void ad714x_use_com_int(struct ad714x_chip *ad714x,
+				int start_stage, int end_stage)
+{
+	unsigned short data;
+	unsigned short mask;
+
+	mask = ((1 << (end_stage + 1)) - 1) - ((1 << start_stage) - 1);
+
+	ad714x->read(ad714x, STG_COM_INT_EN_REG, &data, 1);
+	data |= 1 << end_stage;
+	ad714x->write(ad714x, STG_COM_INT_EN_REG, data);
+
+	ad714x->read(ad714x, STG_HIGH_INT_EN_REG, &data, 1);
+	data &= ~mask;
+	ad714x->write(ad714x, STG_HIGH_INT_EN_REG, data);
+}
+
+static void ad714x_use_thr_int(struct ad714x_chip *ad714x,
+				int start_stage, int end_stage)
+{
+	unsigned short data;
+	unsigned short mask;
+
+	mask = ((1 << (end_stage + 1)) - 1) - ((1 << start_stage) - 1);
+
+	ad714x->read(ad714x, STG_COM_INT_EN_REG, &data, 1);
+	data &= ~(1 << end_stage);
+	ad714x->write(ad714x, STG_COM_INT_EN_REG, data);
+
+	ad714x->read(ad714x, STG_HIGH_INT_EN_REG, &data, 1);
+	data |= mask;
+	ad714x->write(ad714x, STG_HIGH_INT_EN_REG, data);
+}
+
+static int ad714x_cal_highest_stage(struct ad714x_chip *ad714x,
+					int start_stage, int end_stage)
+{
+	int max_res = 0;
+	int max_idx = 0;
+	int i;
+
+	for (i = start_stage; i <= end_stage; i++) {
+		if (ad714x->sensor_val[i] > max_res) {
+			max_res = ad714x->sensor_val[i];
+			max_idx = i;
+		}
+	}
+
+	return max_idx;
+}
+
+static int ad714x_cal_abs_pos(struct ad714x_chip *ad714x,
+				int start_stage, int end_stage,
+				int highest_stage, int max_coord)
+{
+	int a_param, b_param;
+
+	if (highest_stage == start_stage) {
+		a_param = ad714x->sensor_val[start_stage + 1];
+		b_param = ad714x->sensor_val[start_stage] +
+			ad714x->sensor_val[start_stage + 1];
+	} else if (highest_stage == end_stage) {
+		a_param = ad714x->sensor_val[end_stage] *
+			(end_stage - start_stage) +
+			ad714x->sensor_val[end_stage - 1] *
+			(end_stage - start_stage - 1);
+		b_param = ad714x->sensor_val[end_stage] +
+			ad714x->sensor_val[end_stage - 1];
+	} else {
+		a_param = ad714x->sensor_val[highest_stage] *
+			(highest_stage - start_stage) +
+			ad714x->sensor_val[highest_stage - 1] *
+			(highest_stage - start_stage - 1) +
+			ad714x->sensor_val[highest_stage + 1] *
+			(highest_stage - start_stage + 1);
+		b_param = ad714x->sensor_val[highest_stage] +
+			ad714x->sensor_val[highest_stage - 1] +
+			ad714x->sensor_val[highest_stage + 1];
+	}
+
+	return (max_coord / (end_stage - start_stage)) * a_param / b_param;
+}
+
+/*
+ * One button can connect to multi positive and negative of CDCs
+ * Multi-buttons can connect to same positive/negative of one CDC
+ */
+static void ad714x_button_state_machine(struct ad714x_chip *ad714x, int idx)
+{
+	struct ad714x_button_plat *hw = &ad714x->hw->button[idx];
+	struct ad714x_button_drv *sw = &ad714x->sw->button[idx];
+
+	switch (sw->state) {
+	case IDLE:
+		if (((ad714x->h_state & hw->h_mask) == hw->h_mask) &&
+		    ((ad714x->l_state & hw->l_mask) == hw->l_mask)) {
+			dev_dbg(ad714x->dev, "button %d touched\n", idx);
+			input_report_key(sw->input, hw->keycode, 1);
+			input_sync(sw->input);
+			sw->state = ACTIVE;
+		}
+		break;
+
+	case ACTIVE:
+		if (((ad714x->h_state & hw->h_mask) != hw->h_mask) ||
+		    ((ad714x->l_state & hw->l_mask) != hw->l_mask)) {
+			dev_dbg(ad714x->dev, "button %d released\n", idx);
+			input_report_key(sw->input, hw->keycode, 0);
+			input_sync(sw->input);
+			sw->state = IDLE;
+		}
+		break;
+
+	default:
+		break;
+	}
+}
+
+/*
+ * The response of a sensor is defined by the absolute number of codes
+ * between the current CDC value and the ambient value.
+ */
+static void ad714x_slider_cal_sensor_val(struct ad714x_chip *ad714x, int idx)
+{
+	struct ad714x_slider_plat *hw = &ad714x->hw->slider[idx];
+	int i;
+
+	ad714x->read(ad714x, CDC_RESULT_S0 + hw->start_stage,
+			&ad714x->adc_reg[hw->start_stage],
+			hw->end_stage - hw->start_stage + 1);
+
+	for (i = hw->start_stage; i <= hw->end_stage; i++) {
+		ad714x->read(ad714x, STAGE0_AMBIENT + i * PER_STAGE_REG_NUM,
+				&ad714x->amb_reg[i], 1);
+
+		ad714x->sensor_val[i] =
+			abs(ad714x->adc_reg[i] - ad714x->amb_reg[i]);
+	}
+}
+
+static void ad714x_slider_cal_highest_stage(struct ad714x_chip *ad714x, int idx)
+{
+	struct ad714x_slider_plat *hw = &ad714x->hw->slider[idx];
+	struct ad714x_slider_drv *sw = &ad714x->sw->slider[idx];
+
+	sw->highest_stage = ad714x_cal_highest_stage(ad714x, hw->start_stage,
+			hw->end_stage);
+
+	dev_dbg(ad714x->dev, "slider %d highest_stage:%d\n", idx,
+		sw->highest_stage);
+}
+
+/*
+ * The formulae are very straight forward. It uses the sensor with the
+ * highest response and the 2 adjacent ones.
+ * When Sensor 0 has the highest response, only sensor 0 and sensor 1
+ * are used in the calculations. Similarly when the last sensor has the
+ * highest response, only the last sensor and the second last sensors
+ * are used in the calculations.
+ *
+ * For i= idx_of_peak_Sensor-1 to i= idx_of_peak_Sensor+1
+ *         v += Sensor response(i)*i
+ *         w += Sensor response(i)
+ * POS=(Number_of_Positions_Wanted/(Number_of_Sensors_Used-1)) *(v/w)
+ */
+static void ad714x_slider_cal_abs_pos(struct ad714x_chip *ad714x, int idx)
+{
+	struct ad714x_slider_plat *hw = &ad714x->hw->slider[idx];
+	struct ad714x_slider_drv *sw = &ad714x->sw->slider[idx];
+
+	sw->abs_pos = ad714x_cal_abs_pos(ad714x, hw->start_stage, hw->end_stage,
+		sw->highest_stage, hw->max_coord);
+
+	dev_dbg(ad714x->dev, "slider %d absolute position:%d\n", idx,
+		sw->abs_pos);
+}
+
+/*
+ * To minimise the Impact of the noise on the algorithm, ADI developed a
+ * routine that filters the CDC results after they have been read by the
+ * host processor.
+ * The filter used is an Infinite Input Response(IIR) filter implemented
+ * in firmware and attenuates the noise on the CDC results after they've
+ * been read by the host processor.
+ * Filtered_CDC_result = (Filtered_CDC_result * (10 - Coefficient) +
+ *				Latest_CDC_result * Coefficient)/10
+ */
+static void ad714x_slider_cal_flt_pos(struct ad714x_chip *ad714x, int idx)
+{
+	struct ad714x_slider_drv *sw = &ad714x->sw->slider[idx];
+
+	sw->flt_pos = (sw->flt_pos * (10 - 4) +
+			sw->abs_pos * 4)/10;
+
+	dev_dbg(ad714x->dev, "slider %d filter position:%d\n", idx,
+		sw->flt_pos);
+}
+
+static void ad714x_slider_use_com_int(struct ad714x_chip *ad714x, int idx)
+{
+	struct ad714x_slider_plat *hw = &ad714x->hw->slider[idx];
+
+	ad714x_use_com_int(ad714x, hw->start_stage, hw->end_stage);
+}
+
+static void ad714x_slider_use_thr_int(struct ad714x_chip *ad714x, int idx)
+{
+	struct ad714x_slider_plat *hw = &ad714x->hw->slider[idx];
+
+	ad714x_use_thr_int(ad714x, hw->start_stage, hw->end_stage);
+}
+
+static void ad714x_slider_state_machine(struct ad714x_chip *ad714x, int idx)
+{
+	struct ad714x_slider_plat *hw = &ad714x->hw->slider[idx];
+	struct ad714x_slider_drv *sw = &ad714x->sw->slider[idx];
+	unsigned short h_state, c_state;
+	unsigned short mask;
+
+	mask = ((1 << (hw->end_stage + 1)) - 1) - ((1 << hw->start_stage) - 1);
+
+	h_state = ad714x->h_state & mask;
+	c_state = ad714x->c_state & mask;
+
+	switch (sw->state) {
+	case IDLE:
+		if (h_state) {
+			sw->state = JITTER;
+			/* In End of Conversion interrupt mode, the AD714X
+			 * continuously generates hardware interrupts.
+			 */
+			ad714x_slider_use_com_int(ad714x, idx);
+			dev_dbg(ad714x->dev, "slider %d touched\n", idx);
+		}
+		break;
+
+	case JITTER:
+		if (c_state == mask) {
+			ad714x_slider_cal_sensor_val(ad714x, idx);
+			ad714x_slider_cal_highest_stage(ad714x, idx);
+			ad714x_slider_cal_abs_pos(ad714x, idx);
+			sw->flt_pos = sw->abs_pos;
+			sw->state = ACTIVE;
+		}
+		break;
+
+	case ACTIVE:
+		if (c_state == mask) {
+			if (h_state) {
+				ad714x_slider_cal_sensor_val(ad714x, idx);
+				ad714x_slider_cal_highest_stage(ad714x, idx);
+				ad714x_slider_cal_abs_pos(ad714x, idx);
+				ad714x_slider_cal_flt_pos(ad714x, idx);
+				input_report_abs(sw->input, ABS_X, sw->flt_pos);
+				input_report_key(sw->input, BTN_TOUCH, 1);
+			} else {
+				/* When the user lifts off the sensor, configure
+				 * the AD714X back to threshold interrupt mode.
+				 */
+				ad714x_slider_use_thr_int(ad714x, idx);
+				sw->state = IDLE;
+				input_report_key(sw->input, BTN_TOUCH, 0);
+				dev_dbg(ad714x->dev, "slider %d released\n",
+					idx);
+			}
+			input_sync(sw->input);
+		}
+		break;
+
+	default:
+		break;
+	}
+}
+
+/*
+ * When the scroll wheel is activated, we compute the absolute position based
+ * on the sensor values. To calculate the position, we first determine the
+ * sensor that has the greatest response among the 8 sensors that constitutes
+ * the scrollwheel. Then we determined the 2 sensors on either sides of the
+ * sensor with the highest response and we apply weights to these sensors.
+ */
+static void ad714x_wheel_cal_highest_stage(struct ad714x_chip *ad714x, int idx)
+{
+	struct ad714x_wheel_plat *hw = &ad714x->hw->wheel[idx];
+	struct ad714x_wheel_drv *sw = &ad714x->sw->wheel[idx];
+
+	sw->pre_highest_stage = sw->highest_stage;
+	sw->highest_stage = ad714x_cal_highest_stage(ad714x, hw->start_stage,
+			hw->end_stage);
+
+	dev_dbg(ad714x->dev, "wheel %d highest_stage:%d\n", idx,
+		sw->highest_stage);
+}
+
+static void ad714x_wheel_cal_sensor_val(struct ad714x_chip *ad714x, int idx)
+{
+	struct ad714x_wheel_plat *hw = &ad714x->hw->wheel[idx];
+	int i;
+
+	ad714x->read(ad714x, CDC_RESULT_S0 + hw->start_stage,
+			&ad714x->adc_reg[hw->start_stage],
+			hw->end_stage - hw->start_stage + 1);
+
+	for (i = hw->start_stage; i <= hw->end_stage; i++) {
+		ad714x->read(ad714x, STAGE0_AMBIENT + i * PER_STAGE_REG_NUM,
+				&ad714x->amb_reg[i], 1);
+		if (ad714x->adc_reg[i] > ad714x->amb_reg[i])
+			ad714x->sensor_val[i] =
+				ad714x->adc_reg[i] - ad714x->amb_reg[i];
+		else
+			ad714x->sensor_val[i] = 0;
+	}
+}
+
+/*
+ * When the scroll wheel is activated, we compute the absolute position based
+ * on the sensor values. To calculate the position, we first determine the
+ * sensor that has the greatest response among the sensors that constitutes
+ * the scrollwheel. Then we determined the sensors on either sides of the
+ * sensor with the highest response and we apply weights to these sensors. The
+ * result of this computation gives us the mean value.
+ */
+
+static void ad714x_wheel_cal_abs_pos(struct ad714x_chip *ad714x, int idx)
+{
+	struct ad714x_wheel_plat *hw = &ad714x->hw->wheel[idx];
+	struct ad714x_wheel_drv *sw = &ad714x->sw->wheel[idx];
+	int stage_num = hw->end_stage - hw->start_stage + 1;
+	int first_before, highest, first_after;
+	int a_param, b_param;
+
+	first_before = (sw->highest_stage + stage_num - 1) % stage_num;
+	highest = sw->highest_stage;
+	first_after = (sw->highest_stage + stage_num + 1) % stage_num;
+
+	a_param = ad714x->sensor_val[highest] *
+		(highest - hw->start_stage) +
+		ad714x->sensor_val[first_before] *
+		(highest - hw->start_stage - 1) +
+		ad714x->sensor_val[first_after] *
+		(highest - hw->start_stage + 1);
+	b_param = ad714x->sensor_val[highest] +
+		ad714x->sensor_val[first_before] +
+		ad714x->sensor_val[first_after];
+
+	sw->abs_pos = ((hw->max_coord / (hw->end_stage - hw->start_stage)) *
+			a_param) / b_param;
+
+	if (sw->abs_pos > hw->max_coord)
+		sw->abs_pos = hw->max_coord;
+	else if (sw->abs_pos < 0)
+		sw->abs_pos = 0;
+}
+
+static void ad714x_wheel_cal_flt_pos(struct ad714x_chip *ad714x, int idx)
+{
+	struct ad714x_wheel_plat *hw = &ad714x->hw->wheel[idx];
+	struct ad714x_wheel_drv *sw = &ad714x->sw->wheel[idx];
+	if (((sw->pre_highest_stage == hw->end_stage) &&
+			(sw->highest_stage == hw->start_stage)) ||
+	    ((sw->pre_highest_stage == hw->start_stage) &&
+			(sw->highest_stage == hw->end_stage)))
+		sw->flt_pos = sw->abs_pos;
+	else
+		sw->flt_pos = ((sw->flt_pos * 30) + (sw->abs_pos * 71)) / 100;
+
+	if (sw->flt_pos > hw->max_coord)
+		sw->flt_pos = hw->max_coord;
+}
+
+static void ad714x_wheel_use_com_int(struct ad714x_chip *ad714x, int idx)
+{
+	struct ad714x_wheel_plat *hw = &ad714x->hw->wheel[idx];
+
+	ad714x_use_com_int(ad714x, hw->start_stage, hw->end_stage);
+}
+
+static void ad714x_wheel_use_thr_int(struct ad714x_chip *ad714x, int idx)
+{
+	struct ad714x_wheel_plat *hw = &ad714x->hw->wheel[idx];
+
+	ad714x_use_thr_int(ad714x, hw->start_stage, hw->end_stage);
+}
+
+static void ad714x_wheel_state_machine(struct ad714x_chip *ad714x, int idx)
+{
+	struct ad714x_wheel_plat *hw = &ad714x->hw->wheel[idx];
+	struct ad714x_wheel_drv *sw = &ad714x->sw->wheel[idx];
+	unsigned short h_state, c_state;
+	unsigned short mask;
+
+	mask = ((1 << (hw->end_stage + 1)) - 1) - ((1 << hw->start_stage) - 1);
+
+	h_state = ad714x->h_state & mask;
+	c_state = ad714x->c_state & mask;
+
+	switch (sw->state) {
+	case IDLE:
+		if (h_state) {
+			sw->state = JITTER;
+			/* In End of Conversion interrupt mode, the AD714X
+			 * continuously generates hardware interrupts.
+			 */
+			ad714x_wheel_use_com_int(ad714x, idx);
+			dev_dbg(ad714x->dev, "wheel %d touched\n", idx);
+		}
+		break;
+
+	case JITTER:
+		if (c_state == mask)	{
+			ad714x_wheel_cal_sensor_val(ad714x, idx);
+			ad714x_wheel_cal_highest_stage(ad714x, idx);
+			ad714x_wheel_cal_abs_pos(ad714x, idx);
+			sw->flt_pos = sw->abs_pos;
+			sw->state = ACTIVE;
+		}
+		break;
+
+	case ACTIVE:
+		if (c_state == mask) {
+			if (h_state) {
+				ad714x_wheel_cal_sensor_val(ad714x, idx);
+				ad714x_wheel_cal_highest_stage(ad714x, idx);
+				ad714x_wheel_cal_abs_pos(ad714x, idx);
+				ad714x_wheel_cal_flt_pos(ad714x, idx);
+				input_report_abs(sw->input, ABS_WHEEL,
+					sw->flt_pos);
+				input_report_key(sw->input, BTN_TOUCH, 1);
+			} else {
+				/* When the user lifts off the sensor, configure
+				 * the AD714X back to threshold interrupt mode.
+				 */
+				ad714x_wheel_use_thr_int(ad714x, idx);
+				sw->state = IDLE;
+				input_report_key(sw->input, BTN_TOUCH, 0);
+
+				dev_dbg(ad714x->dev, "wheel %d released\n",
+					idx);
+			}
+			input_sync(sw->input);
+		}
+		break;
+
+	default:
+		break;
+	}
+}
+
+static void touchpad_cal_sensor_val(struct ad714x_chip *ad714x, int idx)
+{
+	struct ad714x_touchpad_plat *hw = &ad714x->hw->touchpad[idx];
+	int i;
+
+	ad714x->read(ad714x, CDC_RESULT_S0 + hw->x_start_stage,
+			&ad714x->adc_reg[hw->x_start_stage],
+			hw->x_end_stage - hw->x_start_stage + 1);
+
+	for (i = hw->x_start_stage; i <= hw->x_end_stage; i++) {
+		ad714x->read(ad714x, STAGE0_AMBIENT + i * PER_STAGE_REG_NUM,
+				&ad714x->amb_reg[i], 1);
+		if (ad714x->adc_reg[i] > ad714x->amb_reg[i])
+			ad714x->sensor_val[i] =
+				ad714x->adc_reg[i] - ad714x->amb_reg[i];
+		else
+			ad714x->sensor_val[i] = 0;
+	}
+}
+
+static void touchpad_cal_highest_stage(struct ad714x_chip *ad714x, int idx)
+{
+	struct ad714x_touchpad_plat *hw = &ad714x->hw->touchpad[idx];
+	struct ad714x_touchpad_drv *sw = &ad714x->sw->touchpad[idx];
+
+	sw->x_highest_stage = ad714x_cal_highest_stage(ad714x,
+		hw->x_start_stage, hw->x_end_stage);
+	sw->y_highest_stage = ad714x_cal_highest_stage(ad714x,
+		hw->y_start_stage, hw->y_end_stage);
+
+	dev_dbg(ad714x->dev,
+		"touchpad %d x_highest_stage:%d, y_highest_stage:%d\n",
+		idx, sw->x_highest_stage, sw->y_highest_stage);
+}
+
+/*
+ * If 2 fingers are touching the sensor then 2 peaks can be observed in the
+ * distribution.
+ * The arithmetic doesn't support to get absolute coordinates for multi-touch
+ * yet.
+ */
+static int touchpad_check_second_peak(struct ad714x_chip *ad714x, int idx)
+{
+	struct ad714x_touchpad_plat *hw = &ad714x->hw->touchpad[idx];
+	struct ad714x_touchpad_drv *sw = &ad714x->sw->touchpad[idx];
+	int i;
+
+	for (i = hw->x_start_stage; i < sw->x_highest_stage; i++) {
+		if ((ad714x->sensor_val[i] - ad714x->sensor_val[i + 1])
+			> (ad714x->sensor_val[i + 1] / 10))
+			return 1;
+	}
+
+	for (i = sw->x_highest_stage; i < hw->x_end_stage; i++) {
+		if ((ad714x->sensor_val[i + 1] - ad714x->sensor_val[i])
+			> (ad714x->sensor_val[i] / 10))
+			return 1;
+	}
+
+	for (i = hw->y_start_stage; i < sw->y_highest_stage; i++) {
+		if ((ad714x->sensor_val[i] - ad714x->sensor_val[i + 1])
+			> (ad714x->sensor_val[i + 1] / 10))
+			return 1;
+	}
+
+	for (i = sw->y_highest_stage; i < hw->y_end_stage; i++) {
+		if ((ad714x->sensor_val[i + 1] - ad714x->sensor_val[i])
+			> (ad714x->sensor_val[i] / 10))
+			return 1;
+	}
+
+	return 0;
+}
+
+/*
+ * If only one finger is used to activate the touch pad then only 1 peak will be
+ * registered in the distribution. This peak and the 2 adjacent sensors will be
+ * used in the calculation of the absolute position. This will prevent hand
+ * shadows to affect the absolute position calculation.
+ */
+static void touchpad_cal_abs_pos(struct ad714x_chip *ad714x, int idx)
+{
+	struct ad714x_touchpad_plat *hw = &ad714x->hw->touchpad[idx];
+	struct ad714x_touchpad_drv *sw = &ad714x->sw->touchpad[idx];
+
+	sw->x_abs_pos = ad714x_cal_abs_pos(ad714x, hw->x_start_stage,
+			hw->x_end_stage, sw->x_highest_stage, hw->x_max_coord);
+	sw->y_abs_pos = ad714x_cal_abs_pos(ad714x, hw->y_start_stage,
+			hw->y_end_stage, sw->y_highest_stage, hw->y_max_coord);
+
+	dev_dbg(ad714x->dev, "touchpad %d absolute position:(%d, %d)\n", idx,
+			sw->x_abs_pos, sw->y_abs_pos);
+}
+
+static void touchpad_cal_flt_pos(struct ad714x_chip *ad714x, int idx)
+{
+	struct ad714x_touchpad_drv *sw = &ad714x->sw->touchpad[idx];
+
+	sw->x_flt_pos = (sw->x_flt_pos * (10 - 4) +
+			sw->x_abs_pos * 4)/10;
+	sw->y_flt_pos = (sw->y_flt_pos * (10 - 4) +
+			sw->y_abs_pos * 4)/10;
+
+	dev_dbg(ad714x->dev, "touchpad %d filter position:(%d, %d)\n",
+			idx, sw->x_flt_pos, sw->y_flt_pos);
+}
+
+/*
+ * To prevent distortion from showing in the absolute position, it is
+ * necessary to detect the end points. When endpoints are detected, the
+ * driver stops updating the status variables with absolute positions.
+ * End points are detected on the 4 edges of the touchpad sensor. The
+ * method to detect them is the same for all 4.
+ * To detect the end points, the firmware computes the difference in
+ * percent between the sensor on the edge and the adjacent one. The
+ * difference is calculated in percent in order to make the end point
+ * detection independent of the pressure.
+ */
+
+#define LEFT_END_POINT_DETECTION_LEVEL                  550
+#define RIGHT_END_POINT_DETECTION_LEVEL                 750
+#define LEFT_RIGHT_END_POINT_DEAVTIVALION_LEVEL         850
+#define TOP_END_POINT_DETECTION_LEVEL                   550
+#define BOTTOM_END_POINT_DETECTION_LEVEL                950
+#define TOP_BOTTOM_END_POINT_DEAVTIVALION_LEVEL         700
+static int touchpad_check_endpoint(struct ad714x_chip *ad714x, int idx)
+{
+	struct ad714x_touchpad_plat *hw = &ad714x->hw->touchpad[idx];
+	struct ad714x_touchpad_drv *sw  = &ad714x->sw->touchpad[idx];
+	int percent_sensor_diff;
+
+	/* left endpoint detect */
+	percent_sensor_diff = (ad714x->sensor_val[hw->x_start_stage] -
+			ad714x->sensor_val[hw->x_start_stage + 1]) * 100 /
+			ad714x->sensor_val[hw->x_start_stage + 1];
+	if (!sw->left_ep) {
+		if (percent_sensor_diff >= LEFT_END_POINT_DETECTION_LEVEL)  {
+			sw->left_ep = 1;
+			sw->left_ep_val =
+				ad714x->sensor_val[hw->x_start_stage + 1];
+		}
+	} else {
+		if ((percent_sensor_diff < LEFT_END_POINT_DETECTION_LEVEL) &&
+		    (ad714x->sensor_val[hw->x_start_stage + 1] >
+		     LEFT_RIGHT_END_POINT_DEAVTIVALION_LEVEL + sw->left_ep_val))
+			sw->left_ep = 0;
+	}
+
+	/* right endpoint detect */
+	percent_sensor_diff = (ad714x->sensor_val[hw->x_end_stage] -
+			ad714x->sensor_val[hw->x_end_stage - 1]) * 100 /
+			ad714x->sensor_val[hw->x_end_stage - 1];
+	if (!sw->right_ep) {
+		if (percent_sensor_diff >= RIGHT_END_POINT_DETECTION_LEVEL)  {
+			sw->right_ep = 1;
+			sw->right_ep_val =
+				ad714x->sensor_val[hw->x_end_stage - 1];
+		}
+	} else {
+		if ((percent_sensor_diff < RIGHT_END_POINT_DETECTION_LEVEL) &&
+		(ad714x->sensor_val[hw->x_end_stage - 1] >
+		LEFT_RIGHT_END_POINT_DEAVTIVALION_LEVEL + sw->right_ep_val))
+			sw->right_ep = 0;
+	}
+
+	/* top endpoint detect */
+	percent_sensor_diff = (ad714x->sensor_val[hw->y_start_stage] -
+			ad714x->sensor_val[hw->y_start_stage + 1]) * 100 /
+			ad714x->sensor_val[hw->y_start_stage + 1];
+	if (!sw->top_ep) {
+		if (percent_sensor_diff >= TOP_END_POINT_DETECTION_LEVEL)  {
+			sw->top_ep = 1;
+			sw->top_ep_val =
+				ad714x->sensor_val[hw->y_start_stage + 1];
+		}
+	} else {
+		if ((percent_sensor_diff < TOP_END_POINT_DETECTION_LEVEL) &&
+		(ad714x->sensor_val[hw->y_start_stage + 1] >
+		TOP_BOTTOM_END_POINT_DEAVTIVALION_LEVEL + sw->top_ep_val))
+			sw->top_ep = 0;
+	}
+
+	/* bottom endpoint detect */
+	percent_sensor_diff = (ad714x->sensor_val[hw->y_end_stage] -
+		ad714x->sensor_val[hw->y_end_stage - 1]) * 100 /
+		ad714x->sensor_val[hw->y_end_stage - 1];
+	if (!sw->bottom_ep) {
+		if (percent_sensor_diff >= BOTTOM_END_POINT_DETECTION_LEVEL)  {
+			sw->bottom_ep = 1;
+			sw->bottom_ep_val =
+				ad714x->sensor_val[hw->y_end_stage - 1];
+		}
+	} else {
+		if ((percent_sensor_diff < BOTTOM_END_POINT_DETECTION_LEVEL) &&
+		(ad714x->sensor_val[hw->y_end_stage - 1] >
+		 TOP_BOTTOM_END_POINT_DEAVTIVALION_LEVEL + sw->bottom_ep_val))
+			sw->bottom_ep = 0;
+	}
+
+	return sw->left_ep || sw->right_ep || sw->top_ep || sw->bottom_ep;
+}
+
+static void touchpad_use_com_int(struct ad714x_chip *ad714x, int idx)
+{
+	struct ad714x_touchpad_plat *hw = &ad714x->hw->touchpad[idx];
+
+	ad714x_use_com_int(ad714x, hw->x_start_stage, hw->x_end_stage);
+}
+
+static void touchpad_use_thr_int(struct ad714x_chip *ad714x, int idx)
+{
+	struct ad714x_touchpad_plat *hw = &ad714x->hw->touchpad[idx];
+
+	ad714x_use_thr_int(ad714x, hw->x_start_stage, hw->x_end_stage);
+	ad714x_use_thr_int(ad714x, hw->y_start_stage, hw->y_end_stage);
+}
+
+static void ad714x_touchpad_state_machine(struct ad714x_chip *ad714x, int idx)
+{
+	struct ad714x_touchpad_plat *hw = &ad714x->hw->touchpad[idx];
+	struct ad714x_touchpad_drv *sw = &ad714x->sw->touchpad[idx];
+	unsigned short h_state, c_state;
+	unsigned short mask;
+
+	mask = (((1 << (hw->x_end_stage + 1)) - 1) -
+		((1 << hw->x_start_stage) - 1)) +
+		(((1 << (hw->y_end_stage + 1)) - 1) -
+		((1 << hw->y_start_stage) - 1));
+
+	h_state = ad714x->h_state & mask;
+	c_state = ad714x->c_state & mask;
+
+	switch (sw->state) {
+	case IDLE:
+		if (h_state) {
+			sw->state = JITTER;
+			/* In End of Conversion interrupt mode, the AD714X
+			 * continuously generates hardware interrupts.
+			 */
+			touchpad_use_com_int(ad714x, idx);
+			dev_dbg(ad714x->dev, "touchpad %d touched\n", idx);
+		}
+		break;
+
+	case JITTER:
+		if (c_state == mask) {
+			touchpad_cal_sensor_val(ad714x, idx);
+			touchpad_cal_highest_stage(ad714x, idx);
+			if ((!touchpad_check_second_peak(ad714x, idx)) &&
+				(!touchpad_check_endpoint(ad714x, idx))) {
+				dev_dbg(ad714x->dev,
+					"touchpad%d, 2 fingers or endpoint\n",
+					idx);
+				touchpad_cal_abs_pos(ad714x, idx);
+				sw->x_flt_pos = sw->x_abs_pos;
+				sw->y_flt_pos = sw->y_abs_pos;
+				sw->state = ACTIVE;
+			}
+		}
+		break;
+
+	case ACTIVE:
+		if (c_state == mask) {
+			if (h_state) {
+				touchpad_cal_sensor_val(ad714x, idx);
+				touchpad_cal_highest_stage(ad714x, idx);
+				if ((!touchpad_check_second_peak(ad714x, idx))
+				  && (!touchpad_check_endpoint(ad714x, idx))) {
+					touchpad_cal_abs_pos(ad714x, idx);
+					touchpad_cal_flt_pos(ad714x, idx);
+					input_report_abs(sw->input, ABS_X,
+						sw->x_flt_pos);
+					input_report_abs(sw->input, ABS_Y,
+						sw->y_flt_pos);
+					input_report_key(sw->input, BTN_TOUCH,
+						1);
+				}
+			} else {
+				/* When the user lifts off the sensor, configure
+				 * the AD714X back to threshold interrupt mode.
+				 */
+				touchpad_use_thr_int(ad714x, idx);
+				sw->state = IDLE;
+				input_report_key(sw->input, BTN_TOUCH, 0);
+				dev_dbg(ad714x->dev, "touchpad %d released\n",
+					idx);
+			}
+			input_sync(sw->input);
+		}
+		break;
+
+	default:
+		break;
+	}
+}
+
+static int ad714x_hw_detect(struct ad714x_chip *ad714x)
+{
+	unsigned short data;
+
+	ad714x->read(ad714x, AD714X_PARTID_REG, &data, 1);
+	switch (data & 0xFFF0) {
+	case AD7142_PARTID:
+		ad714x->product = 0x7142;
+		ad714x->version = data & 0xF;
+		dev_info(ad714x->dev, "found AD7142 captouch, rev:%d\n",
+				ad714x->version);
+		return 0;
+
+	case AD7143_PARTID:
+		ad714x->product = 0x7143;
+		ad714x->version = data & 0xF;
+		dev_info(ad714x->dev, "found AD7143 captouch, rev:%d\n",
+				ad714x->version);
+		return 0;
+
+	case AD7147_PARTID:
+		ad714x->product = 0x7147;
+		ad714x->version = data & 0xF;
+		dev_info(ad714x->dev, "found AD7147(A) captouch, rev:%d\n",
+				ad714x->version);
+		return 0;
+
+	case AD7148_PARTID:
+		ad714x->product = 0x7148;
+		ad714x->version = data & 0xF;
+		dev_info(ad714x->dev, "found AD7148 captouch, rev:%d\n",
+				ad714x->version);
+		return 0;
+
+	default:
+		dev_err(ad714x->dev,
+			"fail to detect AD714X captouch, read ID is %04x\n",
+			data);
+		return -ENODEV;
+	}
+}
+
+static void ad714x_hw_init(struct ad714x_chip *ad714x)
+{
+	int i, j;
+	unsigned short reg_base;
+	unsigned short data;
+
+	/* configuration CDC and interrupts */
+
+	for (i = 0; i < STAGE_NUM; i++) {
+		reg_base = AD714X_STAGECFG_REG + i * STAGE_CFGREG_NUM;
+		for (j = 0; j < STAGE_CFGREG_NUM; j++)
+			ad714x->write(ad714x, reg_base + j,
+					ad714x->hw->stage_cfg_reg[i][j]);
+	}
+
+	for (i = 0; i < SYS_CFGREG_NUM; i++)
+		ad714x->write(ad714x, AD714X_SYSCFG_REG + i,
+			ad714x->hw->sys_cfg_reg[i]);
+	for (i = 0; i < SYS_CFGREG_NUM; i++)
+		ad714x->read(ad714x, AD714X_SYSCFG_REG + i, &data, 1);
+
+	ad714x->write(ad714x, AD714X_STG_CAL_EN_REG, 0xFFF);
+
+	/* clear all interrupts */
+	ad714x->read(ad714x, STG_LOW_INT_STA_REG, &ad714x->l_state, 3);
+}
+
+static irqreturn_t ad714x_interrupt_thread(int irq, void *data)
+{
+	struct ad714x_chip *ad714x = data;
+	int i;
+
+	mutex_lock(&ad714x->mutex);
+
+	ad714x->read(ad714x, STG_LOW_INT_STA_REG, &ad714x->l_state, 3);
+
+	for (i = 0; i < ad714x->hw->button_num; i++)
+		ad714x_button_state_machine(ad714x, i);
+	for (i = 0; i < ad714x->hw->slider_num; i++)
+		ad714x_slider_state_machine(ad714x, i);
+	for (i = 0; i < ad714x->hw->wheel_num; i++)
+		ad714x_wheel_state_machine(ad714x, i);
+	for (i = 0; i < ad714x->hw->touchpad_num; i++)
+		ad714x_touchpad_state_machine(ad714x, i);
+
+	mutex_unlock(&ad714x->mutex);
+
+	return IRQ_HANDLED;
+}
+
+struct ad714x_chip *ad714x_probe(struct device *dev, u16 bus_type, int irq,
+				 ad714x_read_t read, ad714x_write_t write)
+{
+	int i;
+	int error;
+	struct input_dev *input;
+
+	struct ad714x_platform_data *plat_data = dev_get_platdata(dev);
+	struct ad714x_chip *ad714x;
+	void *drv_mem;
+	unsigned long irqflags;
+
+	struct ad714x_button_drv *bt_drv;
+	struct ad714x_slider_drv *sd_drv;
+	struct ad714x_wheel_drv *wl_drv;
+	struct ad714x_touchpad_drv *tp_drv;
+
+
+	if (irq <= 0) {
+		dev_err(dev, "IRQ not configured!\n");
+		error = -EINVAL;
+		return ERR_PTR(error);
+	}
+
+	if (dev_get_platdata(dev) == NULL) {
+		dev_err(dev, "platform data for ad714x doesn't exist\n");
+		error = -EINVAL;
+		return ERR_PTR(error);
+	}
+
+	ad714x = devm_kzalloc(dev, sizeof(*ad714x) + sizeof(*ad714x->sw) +
+				   sizeof(*sd_drv) * plat_data->slider_num +
+				   sizeof(*wl_drv) * plat_data->wheel_num +
+				   sizeof(*tp_drv) * plat_data->touchpad_num +
+				   sizeof(*bt_drv) * plat_data->button_num,
+			      GFP_KERNEL);
+	if (!ad714x) {
+		error = -ENOMEM;
+		return ERR_PTR(error);
+	}
+	ad714x->hw = plat_data;
+
+	drv_mem = ad714x + 1;
+	ad714x->sw = drv_mem;
+	drv_mem += sizeof(*ad714x->sw);
+	ad714x->sw->slider = sd_drv = drv_mem;
+	drv_mem += sizeof(*sd_drv) * ad714x->hw->slider_num;
+	ad714x->sw->wheel = wl_drv = drv_mem;
+	drv_mem += sizeof(*wl_drv) * ad714x->hw->wheel_num;
+	ad714x->sw->touchpad = tp_drv = drv_mem;
+	drv_mem += sizeof(*tp_drv) * ad714x->hw->touchpad_num;
+	ad714x->sw->button = bt_drv = drv_mem;
+	drv_mem += sizeof(*bt_drv) * ad714x->hw->button_num;
+
+	ad714x->read = read;
+	ad714x->write = write;
+	ad714x->irq = irq;
+	ad714x->dev = dev;
+
+	error = ad714x_hw_detect(ad714x);
+	if (error)
+		return ERR_PTR(error);
+
+	/* initialize and request sw/hw resources */
+
+	ad714x_hw_init(ad714x);
+	mutex_init(&ad714x->mutex);
+
+	/* a slider uses one input_dev instance */
+	if (ad714x->hw->slider_num > 0) {
+		struct ad714x_slider_plat *sd_plat = ad714x->hw->slider;
+
+		for (i = 0; i < ad714x->hw->slider_num; i++) {
+			input = devm_input_allocate_device(dev);
+			if (!input)
+				return ERR_PTR(-ENOMEM);
+
+			__set_bit(EV_ABS, input->evbit);
+			__set_bit(EV_KEY, input->evbit);
+			__set_bit(ABS_X, input->absbit);
+			__set_bit(BTN_TOUCH, input->keybit);
+			input_set_abs_params(input,
+				ABS_X, 0, sd_plat->max_coord, 0, 0);
+
+			input->id.bustype = bus_type;
+			input->id.product = ad714x->product;
+			input->id.version = ad714x->version;
+			input->name = "ad714x_captouch_slider";
+			input->dev.parent = dev;
+
+			error = input_register_device(input);
+			if (error)
+				return ERR_PTR(error);
+
+			sd_drv[i].input = input;
+		}
+	}
+
+	/* a wheel uses one input_dev instance */
+	if (ad714x->hw->wheel_num > 0) {
+		struct ad714x_wheel_plat *wl_plat = ad714x->hw->wheel;
+
+		for (i = 0; i < ad714x->hw->wheel_num; i++) {
+			input = devm_input_allocate_device(dev);
+			if (!input)
+				return ERR_PTR(-ENOMEM);
+
+			__set_bit(EV_KEY, input->evbit);
+			__set_bit(EV_ABS, input->evbit);
+			__set_bit(ABS_WHEEL, input->absbit);
+			__set_bit(BTN_TOUCH, input->keybit);
+			input_set_abs_params(input,
+				ABS_WHEEL, 0, wl_plat->max_coord, 0, 0);
+
+			input->id.bustype = bus_type;
+			input->id.product = ad714x->product;
+			input->id.version = ad714x->version;
+			input->name = "ad714x_captouch_wheel";
+			input->dev.parent = dev;
+
+			error = input_register_device(input);
+			if (error)
+				return ERR_PTR(error);
+
+			wl_drv[i].input = input;
+		}
+	}
+
+	/* a touchpad uses one input_dev instance */
+	if (ad714x->hw->touchpad_num > 0) {
+		struct ad714x_touchpad_plat *tp_plat = ad714x->hw->touchpad;
+
+		for (i = 0; i < ad714x->hw->touchpad_num; i++) {
+			input = devm_input_allocate_device(dev);
+			if (!input)
+				return ERR_PTR(-ENOMEM);
+
+			__set_bit(EV_ABS, input->evbit);
+			__set_bit(EV_KEY, input->evbit);
+			__set_bit(ABS_X, input->absbit);
+			__set_bit(ABS_Y, input->absbit);
+			__set_bit(BTN_TOUCH, input->keybit);
+			input_set_abs_params(input,
+				ABS_X, 0, tp_plat->x_max_coord, 0, 0);
+			input_set_abs_params(input,
+				ABS_Y, 0, tp_plat->y_max_coord, 0, 0);
+
+			input->id.bustype = bus_type;
+			input->id.product = ad714x->product;
+			input->id.version = ad714x->version;
+			input->name = "ad714x_captouch_pad";
+			input->dev.parent = dev;
+
+			error = input_register_device(input);
+			if (error)
+				return ERR_PTR(error);
+
+			tp_drv[i].input = input;
+		}
+	}
+
+	/* all buttons use one input node */
+	if (ad714x->hw->button_num > 0) {
+		struct ad714x_button_plat *bt_plat = ad714x->hw->button;
+
+		input = devm_input_allocate_device(dev);
+		if (!input) {
+			error = -ENOMEM;
+			return ERR_PTR(error);
+		}
+
+		__set_bit(EV_KEY, input->evbit);
+		for (i = 0; i < ad714x->hw->button_num; i++) {
+			bt_drv[i].input = input;
+			__set_bit(bt_plat[i].keycode, input->keybit);
+		}
+
+		input->id.bustype = bus_type;
+		input->id.product = ad714x->product;
+		input->id.version = ad714x->version;
+		input->name = "ad714x_captouch_button";
+		input->dev.parent = dev;
+
+		error = input_register_device(input);
+		if (error)
+			return ERR_PTR(error);
+	}
+
+	irqflags = plat_data->irqflags ?: IRQF_TRIGGER_FALLING;
+	irqflags |= IRQF_ONESHOT;
+
+	error = devm_request_threaded_irq(dev, ad714x->irq, NULL,
+					  ad714x_interrupt_thread,
+					  irqflags, "ad714x_captouch", ad714x);
+	if (error) {
+		dev_err(dev, "can't allocate irq %d\n", ad714x->irq);
+		return ERR_PTR(error);
+	}
+
+	return ad714x;
+}
+EXPORT_SYMBOL(ad714x_probe);
+
+#ifdef CONFIG_PM
+int ad714x_disable(struct ad714x_chip *ad714x)
+{
+	unsigned short data;
+
+	dev_dbg(ad714x->dev, "%s enter\n", __func__);
+
+	mutex_lock(&ad714x->mutex);
+
+	data = ad714x->hw->sys_cfg_reg[AD714X_PWR_CTRL] | 0x3;
+	ad714x->write(ad714x, AD714X_PWR_CTRL, data);
+
+	mutex_unlock(&ad714x->mutex);
+
+	return 0;
+}
+EXPORT_SYMBOL(ad714x_disable);
+
+int ad714x_enable(struct ad714x_chip *ad714x)
+{
+	dev_dbg(ad714x->dev, "%s enter\n", __func__);
+
+	mutex_lock(&ad714x->mutex);
+
+	/* resume to non-shutdown mode */
+
+	ad714x->write(ad714x, AD714X_PWR_CTRL,
+			ad714x->hw->sys_cfg_reg[AD714X_PWR_CTRL]);
+
+	/* make sure the interrupt output line is not low level after resume,
+	 * otherwise we will get no chance to enter falling-edge irq again
+	 */
+
+	ad714x->read(ad714x, STG_LOW_INT_STA_REG, &ad714x->l_state, 3);
+
+	mutex_unlock(&ad714x->mutex);
+
+	return 0;
+}
+EXPORT_SYMBOL(ad714x_enable);
+#endif
+
+MODULE_DESCRIPTION("Analog Devices AD714X Capacitance Touch Sensor Driver");
+MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/misc/ad714x.h b/drivers/input/misc/ad714x.h
new file mode 100644
index 000000000..af847b5f0
--- /dev/null
+++ b/drivers/input/misc/ad714x.h
@@ -0,0 +1,53 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * AD714X CapTouch Programmable Controller driver (bus interfaces)
+ *
+ * Copyright 2009-2011 Analog Devices Inc.
+ */
+
+#ifndef _AD714X_H_
+#define _AD714X_H_
+
+#include <linux/types.h>
+
+#define STAGE_NUM              12
+
+struct device;
+struct ad714x_platform_data;
+struct ad714x_driver_data;
+struct ad714x_chip;
+
+typedef int (*ad714x_read_t)(struct ad714x_chip *, unsigned short, unsigned short *, size_t);
+typedef int (*ad714x_write_t)(struct ad714x_chip *, unsigned short, unsigned short);
+
+struct ad714x_chip {
+	unsigned short l_state;
+	unsigned short h_state;
+	unsigned short c_state;
+	unsigned short adc_reg[STAGE_NUM];
+	unsigned short amb_reg[STAGE_NUM];
+	unsigned short sensor_val[STAGE_NUM];
+
+	struct ad714x_platform_data *hw;
+	struct ad714x_driver_data *sw;
+
+	int irq;
+	struct device *dev;
+	ad714x_read_t read;
+	ad714x_write_t write;
+
+	struct mutex mutex;
+
+	unsigned product;
+	unsigned version;
+
+	__be16 xfer_buf[16] ____cacheline_aligned;
+
+};
+
+int ad714x_disable(struct ad714x_chip *ad714x);
+int ad714x_enable(struct ad714x_chip *ad714x);
+struct ad714x_chip *ad714x_probe(struct device *dev, u16 bus_type, int irq,
+				 ad714x_read_t read, ad714x_write_t write);
+
+#endif
diff --git a/drivers/input/misc/adxl34x-i2c.c b/drivers/input/misc/adxl34x-i2c.c
new file mode 100644
index 000000000..5be636aaa
--- /dev/null
+++ b/drivers/input/misc/adxl34x-i2c.c
@@ -0,0 +1,171 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * ADLX345/346 Three-Axis Digital Accelerometers (I2C Interface)
+ *
+ * Enter bugs at http://blackfin.uclinux.org/
+ *
+ * Copyright (C) 2009 Michael Hennerich, Analog Devices Inc.
+ */
+
+#include <linux/input.h>	/* BUS_I2C */
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/types.h>
+#include <linux/pm.h>
+#include "adxl34x.h"
+
+static int adxl34x_smbus_read(struct device *dev, unsigned char reg)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+
+	return i2c_smbus_read_byte_data(client, reg);
+}
+
+static int adxl34x_smbus_write(struct device *dev,
+			       unsigned char reg, unsigned char val)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+
+	return i2c_smbus_write_byte_data(client, reg, val);
+}
+
+static int adxl34x_smbus_read_block(struct device *dev,
+				    unsigned char reg, int count,
+				    void *buf)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+
+	return i2c_smbus_read_i2c_block_data(client, reg, count, buf);
+}
+
+static int adxl34x_i2c_read_block(struct device *dev,
+				  unsigned char reg, int count,
+				  void *buf)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	int ret;
+
+	ret = i2c_master_send(client, &reg, 1);
+	if (ret < 0)
+		return ret;
+
+	ret = i2c_master_recv(client, buf, count);
+	if (ret < 0)
+		return ret;
+
+	if (ret != count)
+		return -EIO;
+
+	return 0;
+}
+
+static const struct adxl34x_bus_ops adxl34x_smbus_bops = {
+	.bustype	= BUS_I2C,
+	.write		= adxl34x_smbus_write,
+	.read		= adxl34x_smbus_read,
+	.read_block	= adxl34x_smbus_read_block,
+};
+
+static const struct adxl34x_bus_ops adxl34x_i2c_bops = {
+	.bustype	= BUS_I2C,
+	.write		= adxl34x_smbus_write,
+	.read		= adxl34x_smbus_read,
+	.read_block	= adxl34x_i2c_read_block,
+};
+
+static int adxl34x_i2c_probe(struct i2c_client *client,
+				       const struct i2c_device_id *id)
+{
+	struct adxl34x *ac;
+	int error;
+
+	error = i2c_check_functionality(client->adapter,
+			I2C_FUNC_SMBUS_BYTE_DATA);
+	if (!error) {
+		dev_err(&client->dev, "SMBUS Byte Data not Supported\n");
+		return -EIO;
+	}
+
+	ac = adxl34x_probe(&client->dev, client->irq, false,
+			   i2c_check_functionality(client->adapter,
+						   I2C_FUNC_SMBUS_READ_I2C_BLOCK) ?
+				&adxl34x_smbus_bops : &adxl34x_i2c_bops);
+	if (IS_ERR(ac))
+		return PTR_ERR(ac);
+
+	i2c_set_clientdata(client, ac);
+
+	return 0;
+}
+
+static void adxl34x_i2c_remove(struct i2c_client *client)
+{
+	struct adxl34x *ac = i2c_get_clientdata(client);
+
+	adxl34x_remove(ac);
+}
+
+static int __maybe_unused adxl34x_i2c_suspend(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct adxl34x *ac = i2c_get_clientdata(client);
+
+	adxl34x_suspend(ac);
+
+	return 0;
+}
+
+static int __maybe_unused adxl34x_i2c_resume(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct adxl34x *ac = i2c_get_clientdata(client);
+
+	adxl34x_resume(ac);
+
+	return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(adxl34x_i2c_pm, adxl34x_i2c_suspend,
+			 adxl34x_i2c_resume);
+
+static const struct i2c_device_id adxl34x_id[] = {
+	{ "adxl34x", 0 },
+	{ }
+};
+
+MODULE_DEVICE_TABLE(i2c, adxl34x_id);
+
+static const struct of_device_id adxl34x_of_id[] = {
+	/*
+	 * The ADXL346 is backward-compatible with the ADXL345. Differences are
+	 * handled by runtime detection of the device model, there's thus no
+	 * need for listing the "adi,adxl346" compatible value explicitly.
+	 */
+	{ .compatible = "adi,adxl345", },
+	/*
+	 * Deprecated, DT nodes should use one or more of the device-specific
+	 * compatible values "adi,adxl345" and "adi,adxl346".
+	 */
+	{ .compatible = "adi,adxl34x", },
+	{ }
+};
+
+MODULE_DEVICE_TABLE(of, adxl34x_of_id);
+
+static struct i2c_driver adxl34x_driver = {
+	.driver = {
+		.name = "adxl34x",
+		.pm = &adxl34x_i2c_pm,
+		.of_match_table = adxl34x_of_id,
+	},
+	.probe    = adxl34x_i2c_probe,
+	.remove   = adxl34x_i2c_remove,
+	.id_table = adxl34x_id,
+};
+
+module_i2c_driver(adxl34x_driver);
+
+MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
+MODULE_DESCRIPTION("ADXL345/346 Three-Axis Digital Accelerometer I2C Bus Driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/misc/adxl34x-spi.c b/drivers/input/misc/adxl34x-spi.c
new file mode 100644
index 000000000..91e44d4c6
--- /dev/null
+++ b/drivers/input/misc/adxl34x-spi.c
@@ -0,0 +1,133 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * ADLX345/346 Three-Axis Digital Accelerometers (SPI Interface)
+ *
+ * Enter bugs at http://blackfin.uclinux.org/
+ *
+ * Copyright (C) 2009 Michael Hennerich, Analog Devices Inc.
+ */
+
+#include <linux/input.h>	/* BUS_SPI */
+#include <linux/module.h>
+#include <linux/spi/spi.h>
+#include <linux/pm.h>
+#include <linux/types.h>
+#include "adxl34x.h"
+
+#define MAX_SPI_FREQ_HZ		5000000
+#define MAX_FREQ_NO_FIFODELAY	1500000
+#define ADXL34X_CMD_MULTB	(1 << 6)
+#define ADXL34X_CMD_READ	(1 << 7)
+#define ADXL34X_WRITECMD(reg)	(reg & 0x3F)
+#define ADXL34X_READCMD(reg)	(ADXL34X_CMD_READ | (reg & 0x3F))
+#define ADXL34X_READMB_CMD(reg) (ADXL34X_CMD_READ | ADXL34X_CMD_MULTB \
+					| (reg & 0x3F))
+
+static int adxl34x_spi_read(struct device *dev, unsigned char reg)
+{
+	struct spi_device *spi = to_spi_device(dev);
+	unsigned char cmd;
+
+	cmd = ADXL34X_READCMD(reg);
+
+	return spi_w8r8(spi, cmd);
+}
+
+static int adxl34x_spi_write(struct device *dev,
+			     unsigned char reg, unsigned char val)
+{
+	struct spi_device *spi = to_spi_device(dev);
+	unsigned char buf[2];
+
+	buf[0] = ADXL34X_WRITECMD(reg);
+	buf[1] = val;
+
+	return spi_write(spi, buf, sizeof(buf));
+}
+
+static int adxl34x_spi_read_block(struct device *dev,
+				  unsigned char reg, int count,
+				  void *buf)
+{
+	struct spi_device *spi = to_spi_device(dev);
+	ssize_t status;
+
+	reg = ADXL34X_READMB_CMD(reg);
+	status = spi_write_then_read(spi, &reg, 1, buf, count);
+
+	return (status < 0) ? status : 0;
+}
+
+static const struct adxl34x_bus_ops adxl34x_spi_bops = {
+	.bustype	= BUS_SPI,
+	.write		= adxl34x_spi_write,
+	.read		= adxl34x_spi_read,
+	.read_block	= adxl34x_spi_read_block,
+};
+
+static int adxl34x_spi_probe(struct spi_device *spi)
+{
+	struct adxl34x *ac;
+
+	/* don't exceed max specified SPI CLK frequency */
+	if (spi->max_speed_hz > MAX_SPI_FREQ_HZ) {
+		dev_err(&spi->dev, "SPI CLK %d Hz too fast\n", spi->max_speed_hz);
+		return -EINVAL;
+	}
+
+	ac = adxl34x_probe(&spi->dev, spi->irq,
+			   spi->max_speed_hz > MAX_FREQ_NO_FIFODELAY,
+			   &adxl34x_spi_bops);
+
+	if (IS_ERR(ac))
+		return PTR_ERR(ac);
+
+	spi_set_drvdata(spi, ac);
+
+	return 0;
+}
+
+static void adxl34x_spi_remove(struct spi_device *spi)
+{
+	struct adxl34x *ac = spi_get_drvdata(spi);
+
+	adxl34x_remove(ac);
+}
+
+static int __maybe_unused adxl34x_spi_suspend(struct device *dev)
+{
+	struct spi_device *spi = to_spi_device(dev);
+	struct adxl34x *ac = spi_get_drvdata(spi);
+
+	adxl34x_suspend(ac);
+
+	return 0;
+}
+
+static int __maybe_unused adxl34x_spi_resume(struct device *dev)
+{
+	struct spi_device *spi = to_spi_device(dev);
+	struct adxl34x *ac = spi_get_drvdata(spi);
+
+	adxl34x_resume(ac);
+
+	return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(adxl34x_spi_pm, adxl34x_spi_suspend,
+			 adxl34x_spi_resume);
+
+static struct spi_driver adxl34x_driver = {
+	.driver = {
+		.name = "adxl34x",
+		.pm = &adxl34x_spi_pm,
+	},
+	.probe   = adxl34x_spi_probe,
+	.remove  = adxl34x_spi_remove,
+};
+
+module_spi_driver(adxl34x_driver);
+
+MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
+MODULE_DESCRIPTION("ADXL345/346 Three-Axis Digital Accelerometer SPI Bus Driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/misc/adxl34x.c b/drivers/input/misc/adxl34x.c
new file mode 100644
index 000000000..69e359ff5
--- /dev/null
+++ b/drivers/input/misc/adxl34x.c
@@ -0,0 +1,910 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * ADXL345/346 Three-Axis Digital Accelerometers
+ *
+ * Enter bugs at http://blackfin.uclinux.org/
+ *
+ * Copyright (C) 2009 Michael Hennerich, Analog Devices Inc.
+ */
+
+#include <linux/device.h>
+#include <linux/delay.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/slab.h>
+#include <linux/workqueue.h>
+#include <linux/input/adxl34x.h>
+#include <linux/module.h>
+
+#include "adxl34x.h"
+
+/* ADXL345/6 Register Map */
+#define DEVID		0x00	/* R   Device ID */
+#define THRESH_TAP	0x1D	/* R/W Tap threshold */
+#define OFSX		0x1E	/* R/W X-axis offset */
+#define OFSY		0x1F	/* R/W Y-axis offset */
+#define OFSZ		0x20	/* R/W Z-axis offset */
+#define DUR		0x21	/* R/W Tap duration */
+#define LATENT		0x22	/* R/W Tap latency */
+#define WINDOW		0x23	/* R/W Tap window */
+#define THRESH_ACT	0x24	/* R/W Activity threshold */
+#define THRESH_INACT	0x25	/* R/W Inactivity threshold */
+#define TIME_INACT	0x26	/* R/W Inactivity time */
+#define ACT_INACT_CTL	0x27	/* R/W Axis enable control for activity and */
+				/* inactivity detection */
+#define THRESH_FF	0x28	/* R/W Free-fall threshold */
+#define TIME_FF		0x29	/* R/W Free-fall time */
+#define TAP_AXES	0x2A	/* R/W Axis control for tap/double tap */
+#define ACT_TAP_STATUS	0x2B	/* R   Source of tap/double tap */
+#define BW_RATE		0x2C	/* R/W Data rate and power mode control */
+#define POWER_CTL	0x2D	/* R/W Power saving features control */
+#define INT_ENABLE	0x2E	/* R/W Interrupt enable control */
+#define INT_MAP		0x2F	/* R/W Interrupt mapping control */
+#define INT_SOURCE	0x30	/* R   Source of interrupts */
+#define DATA_FORMAT	0x31	/* R/W Data format control */
+#define DATAX0		0x32	/* R   X-Axis Data 0 */
+#define DATAX1		0x33	/* R   X-Axis Data 1 */
+#define DATAY0		0x34	/* R   Y-Axis Data 0 */
+#define DATAY1		0x35	/* R   Y-Axis Data 1 */
+#define DATAZ0		0x36	/* R   Z-Axis Data 0 */
+#define DATAZ1		0x37	/* R   Z-Axis Data 1 */
+#define FIFO_CTL	0x38	/* R/W FIFO control */
+#define FIFO_STATUS	0x39	/* R   FIFO status */
+#define TAP_SIGN	0x3A	/* R   Sign and source for tap/double tap */
+/* Orientation ADXL346 only */
+#define ORIENT_CONF	0x3B	/* R/W Orientation configuration */
+#define ORIENT		0x3C	/* R   Orientation status */
+
+/* DEVIDs */
+#define ID_ADXL345	0xE5
+#define ID_ADXL346	0xE6
+
+/* INT_ENABLE/INT_MAP/INT_SOURCE Bits */
+#define DATA_READY	(1 << 7)
+#define SINGLE_TAP	(1 << 6)
+#define DOUBLE_TAP	(1 << 5)
+#define ACTIVITY	(1 << 4)
+#define INACTIVITY	(1 << 3)
+#define FREE_FALL	(1 << 2)
+#define WATERMARK	(1 << 1)
+#define OVERRUN		(1 << 0)
+
+/* ACT_INACT_CONTROL Bits */
+#define ACT_ACDC	(1 << 7)
+#define ACT_X_EN	(1 << 6)
+#define ACT_Y_EN	(1 << 5)
+#define ACT_Z_EN	(1 << 4)
+#define INACT_ACDC	(1 << 3)
+#define INACT_X_EN	(1 << 2)
+#define INACT_Y_EN	(1 << 1)
+#define INACT_Z_EN	(1 << 0)
+
+/* TAP_AXES Bits */
+#define SUPPRESS	(1 << 3)
+#define TAP_X_EN	(1 << 2)
+#define TAP_Y_EN	(1 << 1)
+#define TAP_Z_EN	(1 << 0)
+
+/* ACT_TAP_STATUS Bits */
+#define ACT_X_SRC	(1 << 6)
+#define ACT_Y_SRC	(1 << 5)
+#define ACT_Z_SRC	(1 << 4)
+#define ASLEEP		(1 << 3)
+#define TAP_X_SRC	(1 << 2)
+#define TAP_Y_SRC	(1 << 1)
+#define TAP_Z_SRC	(1 << 0)
+
+/* BW_RATE Bits */
+#define LOW_POWER	(1 << 4)
+#define RATE(x)		((x) & 0xF)
+
+/* POWER_CTL Bits */
+#define PCTL_LINK	(1 << 5)
+#define PCTL_AUTO_SLEEP (1 << 4)
+#define PCTL_MEASURE	(1 << 3)
+#define PCTL_SLEEP	(1 << 2)
+#define PCTL_WAKEUP(x)	((x) & 0x3)
+
+/* DATA_FORMAT Bits */
+#define SELF_TEST	(1 << 7)
+#define SPI		(1 << 6)
+#define INT_INVERT	(1 << 5)
+#define FULL_RES	(1 << 3)
+#define JUSTIFY		(1 << 2)
+#define RANGE(x)	((x) & 0x3)
+#define RANGE_PM_2g	0
+#define RANGE_PM_4g	1
+#define RANGE_PM_8g	2
+#define RANGE_PM_16g	3
+
+/*
+ * Maximum value our axis may get in full res mode for the input device
+ * (signed 13 bits)
+ */
+#define ADXL_FULLRES_MAX_VAL 4096
+
+/*
+ * Maximum value our axis may get in fixed res mode for the input device
+ * (signed 10 bits)
+ */
+#define ADXL_FIXEDRES_MAX_VAL 512
+
+/* FIFO_CTL Bits */
+#define FIFO_MODE(x)	(((x) & 0x3) << 6)
+#define FIFO_BYPASS	0
+#define FIFO_FIFO	1
+#define FIFO_STREAM	2
+#define FIFO_TRIGGER	3
+#define TRIGGER		(1 << 5)
+#define SAMPLES(x)	((x) & 0x1F)
+
+/* FIFO_STATUS Bits */
+#define FIFO_TRIG	(1 << 7)
+#define ENTRIES(x)	((x) & 0x3F)
+
+/* TAP_SIGN Bits ADXL346 only */
+#define XSIGN		(1 << 6)
+#define YSIGN		(1 << 5)
+#define ZSIGN		(1 << 4)
+#define XTAP		(1 << 3)
+#define YTAP		(1 << 2)
+#define ZTAP		(1 << 1)
+
+/* ORIENT_CONF ADXL346 only */
+#define ORIENT_DEADZONE(x)	(((x) & 0x7) << 4)
+#define ORIENT_DIVISOR(x)	((x) & 0x7)
+
+/* ORIENT ADXL346 only */
+#define ADXL346_2D_VALID		(1 << 6)
+#define ADXL346_2D_ORIENT(x)		(((x) & 0x30) >> 4)
+#define ADXL346_3D_VALID		(1 << 3)
+#define ADXL346_3D_ORIENT(x)		((x) & 0x7)
+#define ADXL346_2D_PORTRAIT_POS		0	/* +X */
+#define ADXL346_2D_PORTRAIT_NEG		1	/* -X */
+#define ADXL346_2D_LANDSCAPE_POS	2	/* +Y */
+#define ADXL346_2D_LANDSCAPE_NEG	3	/* -Y */
+
+#define ADXL346_3D_FRONT		3	/* +X */
+#define ADXL346_3D_BACK			4	/* -X */
+#define ADXL346_3D_RIGHT		2	/* +Y */
+#define ADXL346_3D_LEFT			5	/* -Y */
+#define ADXL346_3D_TOP			1	/* +Z */
+#define ADXL346_3D_BOTTOM		6	/* -Z */
+
+#undef ADXL_DEBUG
+
+#define ADXL_X_AXIS			0
+#define ADXL_Y_AXIS			1
+#define ADXL_Z_AXIS			2
+
+#define AC_READ(ac, reg)	((ac)->bops->read((ac)->dev, reg))
+#define AC_WRITE(ac, reg, val)	((ac)->bops->write((ac)->dev, reg, val))
+
+struct axis_triple {
+	int x;
+	int y;
+	int z;
+};
+
+struct adxl34x {
+	struct device *dev;
+	struct input_dev *input;
+	struct mutex mutex;	/* reentrant protection for struct */
+	struct adxl34x_platform_data pdata;
+	struct axis_triple swcal;
+	struct axis_triple hwcal;
+	struct axis_triple saved;
+	char phys[32];
+	unsigned orient2d_saved;
+	unsigned orient3d_saved;
+	bool disabled;	/* P: mutex */
+	bool opened;	/* P: mutex */
+	bool suspended;	/* P: mutex */
+	bool fifo_delay;
+	int irq;
+	unsigned model;
+	unsigned int_mask;
+
+	const struct adxl34x_bus_ops *bops;
+};
+
+static const struct adxl34x_platform_data adxl34x_default_init = {
+	.tap_threshold = 35,
+	.tap_duration = 3,
+	.tap_latency = 20,
+	.tap_window = 20,
+	.tap_axis_control = ADXL_TAP_X_EN | ADXL_TAP_Y_EN | ADXL_TAP_Z_EN,
+	.act_axis_control = 0xFF,
+	.activity_threshold = 6,
+	.inactivity_threshold = 4,
+	.inactivity_time = 3,
+	.free_fall_threshold = 8,
+	.free_fall_time = 0x20,
+	.data_rate = 8,
+	.data_range = ADXL_FULL_RES,
+
+	.ev_type = EV_ABS,
+	.ev_code_x = ABS_X,	/* EV_REL */
+	.ev_code_y = ABS_Y,	/* EV_REL */
+	.ev_code_z = ABS_Z,	/* EV_REL */
+
+	.ev_code_tap = {BTN_TOUCH, BTN_TOUCH, BTN_TOUCH}, /* EV_KEY {x,y,z} */
+	.power_mode = ADXL_AUTO_SLEEP | ADXL_LINK,
+	.fifo_mode = ADXL_FIFO_STREAM,
+	.watermark = 0,
+};
+
+static void adxl34x_get_triple(struct adxl34x *ac, struct axis_triple *axis)
+{
+	__le16 buf[3];
+
+	ac->bops->read_block(ac->dev, DATAX0, DATAZ1 - DATAX0 + 1, buf);
+
+	mutex_lock(&ac->mutex);
+	ac->saved.x = (s16) le16_to_cpu(buf[0]);
+	axis->x = ac->saved.x;
+
+	ac->saved.y = (s16) le16_to_cpu(buf[1]);
+	axis->y = ac->saved.y;
+
+	ac->saved.z = (s16) le16_to_cpu(buf[2]);
+	axis->z = ac->saved.z;
+	mutex_unlock(&ac->mutex);
+}
+
+static void adxl34x_service_ev_fifo(struct adxl34x *ac)
+{
+	struct adxl34x_platform_data *pdata = &ac->pdata;
+	struct axis_triple axis;
+
+	adxl34x_get_triple(ac, &axis);
+
+	input_event(ac->input, pdata->ev_type, pdata->ev_code_x,
+		    axis.x - ac->swcal.x);
+	input_event(ac->input, pdata->ev_type, pdata->ev_code_y,
+		    axis.y - ac->swcal.y);
+	input_event(ac->input, pdata->ev_type, pdata->ev_code_z,
+		    axis.z - ac->swcal.z);
+}
+
+static void adxl34x_report_key_single(struct input_dev *input, int key)
+{
+	input_report_key(input, key, true);
+	input_sync(input);
+	input_report_key(input, key, false);
+}
+
+static void adxl34x_send_key_events(struct adxl34x *ac,
+		struct adxl34x_platform_data *pdata, int status, int press)
+{
+	int i;
+
+	for (i = ADXL_X_AXIS; i <= ADXL_Z_AXIS; i++) {
+		if (status & (1 << (ADXL_Z_AXIS - i)))
+			input_report_key(ac->input,
+					 pdata->ev_code_tap[i], press);
+	}
+}
+
+static void adxl34x_do_tap(struct adxl34x *ac,
+		struct adxl34x_platform_data *pdata, int status)
+{
+	adxl34x_send_key_events(ac, pdata, status, true);
+	input_sync(ac->input);
+	adxl34x_send_key_events(ac, pdata, status, false);
+}
+
+static irqreturn_t adxl34x_irq(int irq, void *handle)
+{
+	struct adxl34x *ac = handle;
+	struct adxl34x_platform_data *pdata = &ac->pdata;
+	int int_stat, tap_stat, samples, orient, orient_code;
+
+	/*
+	 * ACT_TAP_STATUS should be read before clearing the interrupt
+	 * Avoid reading ACT_TAP_STATUS in case TAP detection is disabled
+	 */
+
+	if (pdata->tap_axis_control & (TAP_X_EN | TAP_Y_EN | TAP_Z_EN))
+		tap_stat = AC_READ(ac, ACT_TAP_STATUS);
+	else
+		tap_stat = 0;
+
+	int_stat = AC_READ(ac, INT_SOURCE);
+
+	if (int_stat & FREE_FALL)
+		adxl34x_report_key_single(ac->input, pdata->ev_code_ff);
+
+	if (int_stat & OVERRUN)
+		dev_dbg(ac->dev, "OVERRUN\n");
+
+	if (int_stat & (SINGLE_TAP | DOUBLE_TAP)) {
+		adxl34x_do_tap(ac, pdata, tap_stat);
+
+		if (int_stat & DOUBLE_TAP)
+			adxl34x_do_tap(ac, pdata, tap_stat);
+	}
+
+	if (pdata->ev_code_act_inactivity) {
+		if (int_stat & ACTIVITY)
+			input_report_key(ac->input,
+					 pdata->ev_code_act_inactivity, 1);
+		if (int_stat & INACTIVITY)
+			input_report_key(ac->input,
+					 pdata->ev_code_act_inactivity, 0);
+	}
+
+	/*
+	 * ORIENTATION SENSING ADXL346 only
+	 */
+	if (pdata->orientation_enable) {
+		orient = AC_READ(ac, ORIENT);
+		if ((pdata->orientation_enable & ADXL_EN_ORIENTATION_2D) &&
+		    (orient & ADXL346_2D_VALID)) {
+
+			orient_code = ADXL346_2D_ORIENT(orient);
+			/* Report orientation only when it changes */
+			if (ac->orient2d_saved != orient_code) {
+				ac->orient2d_saved = orient_code;
+				adxl34x_report_key_single(ac->input,
+					pdata->ev_codes_orient_2d[orient_code]);
+			}
+		}
+
+		if ((pdata->orientation_enable & ADXL_EN_ORIENTATION_3D) &&
+		    (orient & ADXL346_3D_VALID)) {
+
+			orient_code = ADXL346_3D_ORIENT(orient) - 1;
+			/* Report orientation only when it changes */
+			if (ac->orient3d_saved != orient_code) {
+				ac->orient3d_saved = orient_code;
+				adxl34x_report_key_single(ac->input,
+					pdata->ev_codes_orient_3d[orient_code]);
+			}
+		}
+	}
+
+	if (int_stat & (DATA_READY | WATERMARK)) {
+
+		if (pdata->fifo_mode)
+			samples = ENTRIES(AC_READ(ac, FIFO_STATUS)) + 1;
+		else
+			samples = 1;
+
+		for (; samples > 0; samples--) {
+			adxl34x_service_ev_fifo(ac);
+			/*
+			 * To ensure that the FIFO has
+			 * completely popped, there must be at least 5 us between
+			 * the end of reading the data registers, signified by the
+			 * transition to register 0x38 from 0x37 or the CS pin
+			 * going high, and the start of new reads of the FIFO or
+			 * reading the FIFO_STATUS register. For SPI operation at
+			 * 1.5 MHz or lower, the register addressing portion of the
+			 * transmission is sufficient delay to ensure the FIFO has
+			 * completely popped. It is necessary for SPI operation
+			 * greater than 1.5 MHz to de-assert the CS pin to ensure a
+			 * total of 5 us, which is at most 3.4 us at 5 MHz
+			 * operation.
+			 */
+			if (ac->fifo_delay && (samples > 1))
+				udelay(3);
+		}
+	}
+
+	input_sync(ac->input);
+
+	return IRQ_HANDLED;
+}
+
+static void __adxl34x_disable(struct adxl34x *ac)
+{
+	/*
+	 * A '0' places the ADXL34x into standby mode
+	 * with minimum power consumption.
+	 */
+	AC_WRITE(ac, POWER_CTL, 0);
+}
+
+static void __adxl34x_enable(struct adxl34x *ac)
+{
+	AC_WRITE(ac, POWER_CTL, ac->pdata.power_mode | PCTL_MEASURE);
+}
+
+void adxl34x_suspend(struct adxl34x *ac)
+{
+	mutex_lock(&ac->mutex);
+
+	if (!ac->suspended && !ac->disabled && ac->opened)
+		__adxl34x_disable(ac);
+
+	ac->suspended = true;
+
+	mutex_unlock(&ac->mutex);
+}
+EXPORT_SYMBOL_GPL(adxl34x_suspend);
+
+void adxl34x_resume(struct adxl34x *ac)
+{
+	mutex_lock(&ac->mutex);
+
+	if (ac->suspended && !ac->disabled && ac->opened)
+		__adxl34x_enable(ac);
+
+	ac->suspended = false;
+
+	mutex_unlock(&ac->mutex);
+}
+EXPORT_SYMBOL_GPL(adxl34x_resume);
+
+static ssize_t adxl34x_disable_show(struct device *dev,
+				    struct device_attribute *attr, char *buf)
+{
+	struct adxl34x *ac = dev_get_drvdata(dev);
+
+	return sprintf(buf, "%u\n", ac->disabled);
+}
+
+static ssize_t adxl34x_disable_store(struct device *dev,
+				     struct device_attribute *attr,
+				     const char *buf, size_t count)
+{
+	struct adxl34x *ac = dev_get_drvdata(dev);
+	unsigned int val;
+	int error;
+
+	error = kstrtouint(buf, 10, &val);
+	if (error)
+		return error;
+
+	mutex_lock(&ac->mutex);
+
+	if (!ac->suspended && ac->opened) {
+		if (val) {
+			if (!ac->disabled)
+				__adxl34x_disable(ac);
+		} else {
+			if (ac->disabled)
+				__adxl34x_enable(ac);
+		}
+	}
+
+	ac->disabled = !!val;
+
+	mutex_unlock(&ac->mutex);
+
+	return count;
+}
+
+static DEVICE_ATTR(disable, 0664, adxl34x_disable_show, adxl34x_disable_store);
+
+static ssize_t adxl34x_calibrate_show(struct device *dev,
+				      struct device_attribute *attr, char *buf)
+{
+	struct adxl34x *ac = dev_get_drvdata(dev);
+	ssize_t count;
+
+	mutex_lock(&ac->mutex);
+	count = sprintf(buf, "%d,%d,%d\n",
+			ac->hwcal.x * 4 + ac->swcal.x,
+			ac->hwcal.y * 4 + ac->swcal.y,
+			ac->hwcal.z * 4 + ac->swcal.z);
+	mutex_unlock(&ac->mutex);
+
+	return count;
+}
+
+static ssize_t adxl34x_calibrate_store(struct device *dev,
+				       struct device_attribute *attr,
+				       const char *buf, size_t count)
+{
+	struct adxl34x *ac = dev_get_drvdata(dev);
+
+	/*
+	 * Hardware offset calibration has a resolution of 15.6 mg/LSB.
+	 * We use HW calibration and handle the remaining bits in SW. (4mg/LSB)
+	 */
+
+	mutex_lock(&ac->mutex);
+	ac->hwcal.x -= (ac->saved.x / 4);
+	ac->swcal.x = ac->saved.x % 4;
+
+	ac->hwcal.y -= (ac->saved.y / 4);
+	ac->swcal.y = ac->saved.y % 4;
+
+	ac->hwcal.z -= (ac->saved.z / 4);
+	ac->swcal.z = ac->saved.z % 4;
+
+	AC_WRITE(ac, OFSX, (s8) ac->hwcal.x);
+	AC_WRITE(ac, OFSY, (s8) ac->hwcal.y);
+	AC_WRITE(ac, OFSZ, (s8) ac->hwcal.z);
+	mutex_unlock(&ac->mutex);
+
+	return count;
+}
+
+static DEVICE_ATTR(calibrate, 0664,
+		   adxl34x_calibrate_show, adxl34x_calibrate_store);
+
+static ssize_t adxl34x_rate_show(struct device *dev,
+				 struct device_attribute *attr, char *buf)
+{
+	struct adxl34x *ac = dev_get_drvdata(dev);
+
+	return sprintf(buf, "%u\n", RATE(ac->pdata.data_rate));
+}
+
+static ssize_t adxl34x_rate_store(struct device *dev,
+				  struct device_attribute *attr,
+				  const char *buf, size_t count)
+{
+	struct adxl34x *ac = dev_get_drvdata(dev);
+	unsigned char val;
+	int error;
+
+	error = kstrtou8(buf, 10, &val);
+	if (error)
+		return error;
+
+	mutex_lock(&ac->mutex);
+
+	ac->pdata.data_rate = RATE(val);
+	AC_WRITE(ac, BW_RATE,
+		 ac->pdata.data_rate |
+			(ac->pdata.low_power_mode ? LOW_POWER : 0));
+
+	mutex_unlock(&ac->mutex);
+
+	return count;
+}
+
+static DEVICE_ATTR(rate, 0664, adxl34x_rate_show, adxl34x_rate_store);
+
+static ssize_t adxl34x_autosleep_show(struct device *dev,
+				 struct device_attribute *attr, char *buf)
+{
+	struct adxl34x *ac = dev_get_drvdata(dev);
+
+	return sprintf(buf, "%u\n",
+		ac->pdata.power_mode & (PCTL_AUTO_SLEEP | PCTL_LINK) ? 1 : 0);
+}
+
+static ssize_t adxl34x_autosleep_store(struct device *dev,
+				  struct device_attribute *attr,
+				  const char *buf, size_t count)
+{
+	struct adxl34x *ac = dev_get_drvdata(dev);
+	unsigned int val;
+	int error;
+
+	error = kstrtouint(buf, 10, &val);
+	if (error)
+		return error;
+
+	mutex_lock(&ac->mutex);
+
+	if (val)
+		ac->pdata.power_mode |= (PCTL_AUTO_SLEEP | PCTL_LINK);
+	else
+		ac->pdata.power_mode &= ~(PCTL_AUTO_SLEEP | PCTL_LINK);
+
+	if (!ac->disabled && !ac->suspended && ac->opened)
+		AC_WRITE(ac, POWER_CTL, ac->pdata.power_mode | PCTL_MEASURE);
+
+	mutex_unlock(&ac->mutex);
+
+	return count;
+}
+
+static DEVICE_ATTR(autosleep, 0664,
+		   adxl34x_autosleep_show, adxl34x_autosleep_store);
+
+static ssize_t adxl34x_position_show(struct device *dev,
+				 struct device_attribute *attr, char *buf)
+{
+	struct adxl34x *ac = dev_get_drvdata(dev);
+	ssize_t count;
+
+	mutex_lock(&ac->mutex);
+	count = sprintf(buf, "(%d, %d, %d)\n",
+			ac->saved.x, ac->saved.y, ac->saved.z);
+	mutex_unlock(&ac->mutex);
+
+	return count;
+}
+
+static DEVICE_ATTR(position, S_IRUGO, adxl34x_position_show, NULL);
+
+#ifdef ADXL_DEBUG
+static ssize_t adxl34x_write_store(struct device *dev,
+				   struct device_attribute *attr,
+				   const char *buf, size_t count)
+{
+	struct adxl34x *ac = dev_get_drvdata(dev);
+	unsigned int val;
+	int error;
+
+	/*
+	 * This allows basic ADXL register write access for debug purposes.
+	 */
+	error = kstrtouint(buf, 16, &val);
+	if (error)
+		return error;
+
+	mutex_lock(&ac->mutex);
+	AC_WRITE(ac, val >> 8, val & 0xFF);
+	mutex_unlock(&ac->mutex);
+
+	return count;
+}
+
+static DEVICE_ATTR(write, 0664, NULL, adxl34x_write_store);
+#endif
+
+static struct attribute *adxl34x_attributes[] = {
+	&dev_attr_disable.attr,
+	&dev_attr_calibrate.attr,
+	&dev_attr_rate.attr,
+	&dev_attr_autosleep.attr,
+	&dev_attr_position.attr,
+#ifdef ADXL_DEBUG
+	&dev_attr_write.attr,
+#endif
+	NULL
+};
+
+static const struct attribute_group adxl34x_attr_group = {
+	.attrs = adxl34x_attributes,
+};
+
+static int adxl34x_input_open(struct input_dev *input)
+{
+	struct adxl34x *ac = input_get_drvdata(input);
+
+	mutex_lock(&ac->mutex);
+
+	if (!ac->suspended && !ac->disabled)
+		__adxl34x_enable(ac);
+
+	ac->opened = true;
+
+	mutex_unlock(&ac->mutex);
+
+	return 0;
+}
+
+static void adxl34x_input_close(struct input_dev *input)
+{
+	struct adxl34x *ac = input_get_drvdata(input);
+
+	mutex_lock(&ac->mutex);
+
+	if (!ac->suspended && !ac->disabled)
+		__adxl34x_disable(ac);
+
+	ac->opened = false;
+
+	mutex_unlock(&ac->mutex);
+}
+
+struct adxl34x *adxl34x_probe(struct device *dev, int irq,
+			      bool fifo_delay_default,
+			      const struct adxl34x_bus_ops *bops)
+{
+	struct adxl34x *ac;
+	struct input_dev *input_dev;
+	const struct adxl34x_platform_data *pdata;
+	int err, range, i;
+	int revid;
+
+	if (!irq) {
+		dev_err(dev, "no IRQ?\n");
+		err = -ENODEV;
+		goto err_out;
+	}
+
+	ac = kzalloc(sizeof(*ac), GFP_KERNEL);
+	input_dev = input_allocate_device();
+	if (!ac || !input_dev) {
+		err = -ENOMEM;
+		goto err_free_mem;
+	}
+
+	ac->fifo_delay = fifo_delay_default;
+
+	pdata = dev_get_platdata(dev);
+	if (!pdata) {
+		dev_dbg(dev,
+			"No platform data: Using default initialization\n");
+		pdata = &adxl34x_default_init;
+	}
+
+	ac->pdata = *pdata;
+	pdata = &ac->pdata;
+
+	ac->input = input_dev;
+	ac->dev = dev;
+	ac->irq = irq;
+	ac->bops = bops;
+
+	mutex_init(&ac->mutex);
+
+	input_dev->name = "ADXL34x accelerometer";
+	revid = AC_READ(ac, DEVID);
+
+	switch (revid) {
+	case ID_ADXL345:
+		ac->model = 345;
+		break;
+	case ID_ADXL346:
+		ac->model = 346;
+		break;
+	default:
+		dev_err(dev, "Failed to probe %s\n", input_dev->name);
+		err = -ENODEV;
+		goto err_free_mem;
+	}
+
+	snprintf(ac->phys, sizeof(ac->phys), "%s/input0", dev_name(dev));
+
+	input_dev->phys = ac->phys;
+	input_dev->dev.parent = dev;
+	input_dev->id.product = ac->model;
+	input_dev->id.bustype = bops->bustype;
+	input_dev->open = adxl34x_input_open;
+	input_dev->close = adxl34x_input_close;
+
+	input_set_drvdata(input_dev, ac);
+
+	__set_bit(ac->pdata.ev_type, input_dev->evbit);
+
+	if (ac->pdata.ev_type == EV_REL) {
+		__set_bit(REL_X, input_dev->relbit);
+		__set_bit(REL_Y, input_dev->relbit);
+		__set_bit(REL_Z, input_dev->relbit);
+	} else {
+		/* EV_ABS */
+		__set_bit(ABS_X, input_dev->absbit);
+		__set_bit(ABS_Y, input_dev->absbit);
+		__set_bit(ABS_Z, input_dev->absbit);
+
+		if (pdata->data_range & FULL_RES)
+			range = ADXL_FULLRES_MAX_VAL;	/* Signed 13-bit */
+		else
+			range = ADXL_FIXEDRES_MAX_VAL;	/* Signed 10-bit */
+
+		input_set_abs_params(input_dev, ABS_X, -range, range, 3, 3);
+		input_set_abs_params(input_dev, ABS_Y, -range, range, 3, 3);
+		input_set_abs_params(input_dev, ABS_Z, -range, range, 3, 3);
+	}
+
+	__set_bit(EV_KEY, input_dev->evbit);
+	__set_bit(pdata->ev_code_tap[ADXL_X_AXIS], input_dev->keybit);
+	__set_bit(pdata->ev_code_tap[ADXL_Y_AXIS], input_dev->keybit);
+	__set_bit(pdata->ev_code_tap[ADXL_Z_AXIS], input_dev->keybit);
+
+	if (pdata->ev_code_ff) {
+		ac->int_mask = FREE_FALL;
+		__set_bit(pdata->ev_code_ff, input_dev->keybit);
+	}
+
+	if (pdata->ev_code_act_inactivity)
+		__set_bit(pdata->ev_code_act_inactivity, input_dev->keybit);
+
+	ac->int_mask |= ACTIVITY | INACTIVITY;
+
+	if (pdata->watermark) {
+		ac->int_mask |= WATERMARK;
+		if (FIFO_MODE(pdata->fifo_mode) == FIFO_BYPASS)
+			ac->pdata.fifo_mode |= FIFO_STREAM;
+	} else {
+		ac->int_mask |= DATA_READY;
+	}
+
+	if (pdata->tap_axis_control & (TAP_X_EN | TAP_Y_EN | TAP_Z_EN))
+		ac->int_mask |= SINGLE_TAP | DOUBLE_TAP;
+
+	if (FIFO_MODE(pdata->fifo_mode) == FIFO_BYPASS)
+		ac->fifo_delay = false;
+
+	AC_WRITE(ac, POWER_CTL, 0);
+
+	err = request_threaded_irq(ac->irq, NULL, adxl34x_irq,
+				   IRQF_ONESHOT, dev_name(dev), ac);
+	if (err) {
+		dev_err(dev, "irq %d busy?\n", ac->irq);
+		goto err_free_mem;
+	}
+
+	err = sysfs_create_group(&dev->kobj, &adxl34x_attr_group);
+	if (err)
+		goto err_free_irq;
+
+	err = input_register_device(input_dev);
+	if (err)
+		goto err_remove_attr;
+
+	AC_WRITE(ac, OFSX, pdata->x_axis_offset);
+	ac->hwcal.x = pdata->x_axis_offset;
+	AC_WRITE(ac, OFSY, pdata->y_axis_offset);
+	ac->hwcal.y = pdata->y_axis_offset;
+	AC_WRITE(ac, OFSZ, pdata->z_axis_offset);
+	ac->hwcal.z = pdata->z_axis_offset;
+	AC_WRITE(ac, THRESH_TAP, pdata->tap_threshold);
+	AC_WRITE(ac, DUR, pdata->tap_duration);
+	AC_WRITE(ac, LATENT, pdata->tap_latency);
+	AC_WRITE(ac, WINDOW, pdata->tap_window);
+	AC_WRITE(ac, THRESH_ACT, pdata->activity_threshold);
+	AC_WRITE(ac, THRESH_INACT, pdata->inactivity_threshold);
+	AC_WRITE(ac, TIME_INACT, pdata->inactivity_time);
+	AC_WRITE(ac, THRESH_FF, pdata->free_fall_threshold);
+	AC_WRITE(ac, TIME_FF, pdata->free_fall_time);
+	AC_WRITE(ac, TAP_AXES, pdata->tap_axis_control);
+	AC_WRITE(ac, ACT_INACT_CTL, pdata->act_axis_control);
+	AC_WRITE(ac, BW_RATE, RATE(ac->pdata.data_rate) |
+		 (pdata->low_power_mode ? LOW_POWER : 0));
+	AC_WRITE(ac, DATA_FORMAT, pdata->data_range);
+	AC_WRITE(ac, FIFO_CTL, FIFO_MODE(pdata->fifo_mode) |
+			SAMPLES(pdata->watermark));
+
+	if (pdata->use_int2) {
+		/* Map all INTs to INT2 */
+		AC_WRITE(ac, INT_MAP, ac->int_mask | OVERRUN);
+	} else {
+		/* Map all INTs to INT1 */
+		AC_WRITE(ac, INT_MAP, 0);
+	}
+
+	if (ac->model == 346 && ac->pdata.orientation_enable) {
+		AC_WRITE(ac, ORIENT_CONF,
+			ORIENT_DEADZONE(ac->pdata.deadzone_angle) |
+			ORIENT_DIVISOR(ac->pdata.divisor_length));
+
+		ac->orient2d_saved = 1234;
+		ac->orient3d_saved = 1234;
+
+		if (pdata->orientation_enable & ADXL_EN_ORIENTATION_3D)
+			for (i = 0; i < ARRAY_SIZE(pdata->ev_codes_orient_3d); i++)
+				__set_bit(pdata->ev_codes_orient_3d[i],
+					  input_dev->keybit);
+
+		if (pdata->orientation_enable & ADXL_EN_ORIENTATION_2D)
+			for (i = 0; i < ARRAY_SIZE(pdata->ev_codes_orient_2d); i++)
+				__set_bit(pdata->ev_codes_orient_2d[i],
+					  input_dev->keybit);
+	} else {
+		ac->pdata.orientation_enable = 0;
+	}
+
+	AC_WRITE(ac, INT_ENABLE, ac->int_mask | OVERRUN);
+
+	ac->pdata.power_mode &= (PCTL_AUTO_SLEEP | PCTL_LINK);
+
+	return ac;
+
+ err_remove_attr:
+	sysfs_remove_group(&dev->kobj, &adxl34x_attr_group);
+ err_free_irq:
+	free_irq(ac->irq, ac);
+ err_free_mem:
+	input_free_device(input_dev);
+	kfree(ac);
+ err_out:
+	return ERR_PTR(err);
+}
+EXPORT_SYMBOL_GPL(adxl34x_probe);
+
+void adxl34x_remove(struct adxl34x *ac)
+{
+	sysfs_remove_group(&ac->dev->kobj, &adxl34x_attr_group);
+	free_irq(ac->irq, ac);
+	input_unregister_device(ac->input);
+	dev_dbg(ac->dev, "unregistered accelerometer\n");
+	kfree(ac);
+}
+EXPORT_SYMBOL_GPL(adxl34x_remove);
+
+MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
+MODULE_DESCRIPTION("ADXL345/346 Three-Axis Digital Accelerometer Driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/misc/adxl34x.h b/drivers/input/misc/adxl34x.h
new file mode 100644
index 000000000..febf85270
--- /dev/null
+++ b/drivers/input/misc/adxl34x.h
@@ -0,0 +1,30 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * ADXL345/346 Three-Axis Digital Accelerometers (I2C/SPI Interface)
+ *
+ * Enter bugs at http://blackfin.uclinux.org/
+ *
+ * Copyright (C) 2009 Michael Hennerich, Analog Devices Inc.
+ */
+
+#ifndef _ADXL34X_H_
+#define _ADXL34X_H_
+
+struct device;
+struct adxl34x;
+
+struct adxl34x_bus_ops {
+	u16 bustype;
+	int (*read)(struct device *, unsigned char);
+	int (*read_block)(struct device *, unsigned char, int, void *);
+	int (*write)(struct device *, unsigned char, unsigned char);
+};
+
+void adxl34x_suspend(struct adxl34x *ac);
+void adxl34x_resume(struct adxl34x *ac);
+struct adxl34x *adxl34x_probe(struct device *dev, int irq,
+			      bool fifo_delay_default,
+			      const struct adxl34x_bus_ops *bops);
+void adxl34x_remove(struct adxl34x *ac);
+
+#endif
diff --git a/drivers/input/misc/apanel.c b/drivers/input/misc/apanel.c
new file mode 100644
index 000000000..7276657ad
--- /dev/null
+++ b/drivers/input/misc/apanel.c
@@ -0,0 +1,305 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ *  Fujitsu Lifebook Application Panel button drive
+ *
+ *  Copyright (C) 2007 Stephen Hemminger <shemminger@linux-foundation.org>
+ *  Copyright (C) 2001-2003 Jochen Eisinger <jochen@penguin-breeder.org>
+ *
+ * Many Fujitsu Lifebook laptops have a small panel of buttons that are
+ * accessible via the i2c/smbus interface. This driver polls those
+ * buttons and generates input events.
+ *
+ * For more details see:
+ *	http://apanel.sourceforge.net/tech.php
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/ioport.h>
+#include <linux/io.h>
+#include <linux/input.h>
+#include <linux/i2c.h>
+#include <linux/leds.h>
+
+#define APANEL_NAME	"Fujitsu Application Panel"
+#define APANEL		"apanel"
+
+/* How often we poll keys - msecs */
+#define POLL_INTERVAL_DEFAULT	1000
+
+/* Magic constants in BIOS that tell about buttons */
+enum apanel_devid {
+	APANEL_DEV_NONE	  = 0,
+	APANEL_DEV_APPBTN = 1,
+	APANEL_DEV_CDBTN  = 2,
+	APANEL_DEV_LCD	  = 3,
+	APANEL_DEV_LED	  = 4,
+
+	APANEL_DEV_MAX,
+};
+
+enum apanel_chip {
+	CHIP_NONE    = 0,
+	CHIP_OZ992C  = 1,
+	CHIP_OZ163T  = 2,
+	CHIP_OZ711M3 = 4,
+};
+
+/* Result of BIOS snooping/probing -- what features are supported */
+static enum apanel_chip device_chip[APANEL_DEV_MAX];
+
+#define MAX_PANEL_KEYS	12
+
+struct apanel {
+	struct input_dev *idev;
+	struct i2c_client *client;
+	unsigned short keymap[MAX_PANEL_KEYS];
+	u16 nkeys;
+	struct led_classdev mail_led;
+};
+
+static const unsigned short apanel_keymap[MAX_PANEL_KEYS] = {
+	[0] = KEY_MAIL,
+	[1] = KEY_WWW,
+	[2] = KEY_PROG2,
+	[3] = KEY_PROG1,
+
+	[8] = KEY_FORWARD,
+	[9] = KEY_REWIND,
+	[10] = KEY_STOPCD,
+	[11] = KEY_PLAYPAUSE,
+};
+
+static void report_key(struct input_dev *input, unsigned keycode)
+{
+	dev_dbg(input->dev.parent, "report key %#x\n", keycode);
+	input_report_key(input, keycode, 1);
+	input_sync(input);
+
+	input_report_key(input, keycode, 0);
+	input_sync(input);
+}
+
+/* Poll for key changes
+ *
+ * Read Application keys via SMI
+ *  A (0x4), B (0x8), Internet (0x2), Email (0x1).
+ *
+ * CD keys:
+ * Forward (0x100), Rewind (0x200), Stop (0x400), Pause (0x800)
+ */
+static void apanel_poll(struct input_dev *idev)
+{
+	struct apanel *ap = input_get_drvdata(idev);
+	u8 cmd = device_chip[APANEL_DEV_APPBTN] == CHIP_OZ992C ? 0 : 8;
+	s32 data;
+	int i;
+
+	data = i2c_smbus_read_word_data(ap->client, cmd);
+	if (data < 0)
+		return;	/* ignore errors (due to ACPI??) */
+
+	/* write back to clear latch */
+	i2c_smbus_write_word_data(ap->client, cmd, 0);
+
+	if (!data)
+		return;
+
+	dev_dbg(&idev->dev, APANEL ": data %#x\n", data);
+	for (i = 0; i < idev->keycodemax; i++)
+		if ((1u << i) & data)
+			report_key(idev, ap->keymap[i]);
+}
+
+static int mail_led_set(struct led_classdev *led,
+			 enum led_brightness value)
+{
+	struct apanel *ap = container_of(led, struct apanel, mail_led);
+	u16 led_bits = value != LED_OFF ? 0x8000 : 0x0000;
+
+	return i2c_smbus_write_word_data(ap->client, 0x10, led_bits);
+}
+
+static int apanel_probe(struct i2c_client *client,
+			const struct i2c_device_id *id)
+{
+	struct apanel *ap;
+	struct input_dev *idev;
+	u8 cmd = device_chip[APANEL_DEV_APPBTN] == CHIP_OZ992C ? 0 : 8;
+	int i, err;
+
+	ap = devm_kzalloc(&client->dev, sizeof(*ap), GFP_KERNEL);
+	if (!ap)
+		return -ENOMEM;
+
+	idev = devm_input_allocate_device(&client->dev);
+	if (!idev)
+		return -ENOMEM;
+
+	ap->idev = idev;
+	ap->client = client;
+
+	i2c_set_clientdata(client, ap);
+
+	err = i2c_smbus_write_word_data(client, cmd, 0);
+	if (err) {
+		dev_warn(&client->dev, "smbus write error %d\n", err);
+		return err;
+	}
+
+	input_set_drvdata(idev, ap);
+
+	idev->name = APANEL_NAME " buttons";
+	idev->phys = "apanel/input0";
+	idev->id.bustype = BUS_HOST;
+
+	memcpy(ap->keymap, apanel_keymap, sizeof(apanel_keymap));
+	idev->keycode = ap->keymap;
+	idev->keycodesize = sizeof(ap->keymap[0]);
+	idev->keycodemax = (device_chip[APANEL_DEV_CDBTN] != CHIP_NONE) ? 12 : 4;
+
+	set_bit(EV_KEY, idev->evbit);
+	for (i = 0; i < idev->keycodemax; i++)
+		if (ap->keymap[i])
+			set_bit(ap->keymap[i], idev->keybit);
+
+	err = input_setup_polling(idev, apanel_poll);
+	if (err)
+		return err;
+
+	input_set_poll_interval(idev, POLL_INTERVAL_DEFAULT);
+
+	err = input_register_device(idev);
+	if (err)
+		return err;
+
+	if (device_chip[APANEL_DEV_LED] != CHIP_NONE) {
+		ap->mail_led.name = "mail:blue";
+		ap->mail_led.brightness_set_blocking = mail_led_set;
+		err = devm_led_classdev_register(&client->dev, &ap->mail_led);
+		if (err)
+			return err;
+	}
+
+	return 0;
+}
+
+static void apanel_shutdown(struct i2c_client *client)
+{
+	struct apanel *ap = i2c_get_clientdata(client);
+
+	if (device_chip[APANEL_DEV_LED] != CHIP_NONE)
+		led_set_brightness(&ap->mail_led, LED_OFF);
+}
+
+static const struct i2c_device_id apanel_id[] = {
+	{ "fujitsu_apanel", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, apanel_id);
+
+static struct i2c_driver apanel_driver = {
+	.driver = {
+		.name = APANEL,
+	},
+	.probe		= apanel_probe,
+	.shutdown	= apanel_shutdown,
+	.id_table	= apanel_id,
+};
+
+/* Scan the system ROM for the signature "FJKEYINF" */
+static __init const void __iomem *bios_signature(const void __iomem *bios)
+{
+	ssize_t offset;
+	const unsigned char signature[] = "FJKEYINF";
+
+	for (offset = 0; offset < 0x10000; offset += 0x10) {
+		if (check_signature(bios + offset, signature,
+				    sizeof(signature)-1))
+			return bios + offset;
+	}
+	pr_notice(APANEL ": Fujitsu BIOS signature '%s' not found...\n",
+		  signature);
+	return NULL;
+}
+
+static int __init apanel_init(void)
+{
+	void __iomem *bios;
+	const void __iomem *p;
+	u8 devno;
+	unsigned char i2c_addr;
+	int found = 0;
+
+	bios = ioremap(0xF0000, 0x10000); /* Can't fail */
+
+	p = bios_signature(bios);
+	if (!p) {
+		iounmap(bios);
+		return -ENODEV;
+	}
+
+	/* just use the first address */
+	p += 8;
+	i2c_addr = readb(p + 3) >> 1;
+
+	for ( ; (devno = readb(p)) & 0x7f; p += 4) {
+		unsigned char method, slave, chip;
+
+		method = readb(p + 1);
+		chip = readb(p + 2);
+		slave = readb(p + 3) >> 1;
+
+		if (slave != i2c_addr) {
+			pr_notice(APANEL ": only one SMBus slave "
+				  "address supported, skipping device...\n");
+			continue;
+		}
+
+		/* translate alternative device numbers */
+		switch (devno) {
+		case 6:
+			devno = APANEL_DEV_APPBTN;
+			break;
+		case 7:
+			devno = APANEL_DEV_LED;
+			break;
+		}
+
+		if (devno >= APANEL_DEV_MAX)
+			pr_notice(APANEL ": unknown device %u found\n", devno);
+		else if (device_chip[devno] != CHIP_NONE)
+			pr_warn(APANEL ": duplicate entry for devno %u\n",
+				devno);
+
+		else if (method != 1 && method != 2 && method != 4) {
+			pr_notice(APANEL ": unknown method %u for devno %u\n",
+				  method, devno);
+		} else {
+			device_chip[devno] = (enum apanel_chip) chip;
+			++found;
+		}
+	}
+	iounmap(bios);
+
+	if (found == 0) {
+		pr_info(APANEL ": no input devices reported by BIOS\n");
+		return -EIO;
+	}
+
+	return i2c_add_driver(&apanel_driver);
+}
+module_init(apanel_init);
+
+static void __exit apanel_cleanup(void)
+{
+	i2c_del_driver(&apanel_driver);
+}
+module_exit(apanel_cleanup);
+
+MODULE_AUTHOR("Stephen Hemminger <shemminger@linux-foundation.org>");
+MODULE_DESCRIPTION(APANEL_NAME " driver");
+MODULE_LICENSE("GPL");
+
+MODULE_ALIAS("dmi:*:svnFUJITSU:pnLifeBook*:pvr*:rvnFUJITSU:*");
+MODULE_ALIAS("dmi:*:svnFUJITSU:pnLifebook*:pvr*:rvnFUJITSU:*");
diff --git a/drivers/input/misc/ariel-pwrbutton.c b/drivers/input/misc/ariel-pwrbutton.c
new file mode 100644
index 000000000..cdc80715b
--- /dev/null
+++ b/drivers/input/misc/ariel-pwrbutton.c
@@ -0,0 +1,170 @@
+// SPDX-License-Identifier: BSD-2-Clause OR GPL-2.0-or-later
+/*
+ * Dell Wyse 3020 a.k.a. "Ariel" Power Button Driver
+ *
+ * Copyright (C) 2020 Lubomir Rintel
+ */
+
+#include <linux/device.h>
+#include <linux/gfp.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/spi/spi.h>
+
+#define RESP_COUNTER(response)	(response.header & 0x3)
+#define RESP_SIZE(response)	((response.header >> 2) & 0x3)
+#define RESP_TYPE(response)	((response.header >> 4) & 0xf)
+
+struct ec_input_response {
+	u8 reserved;
+	u8 header;
+	u8 data[3];
+} __packed;
+
+struct ariel_pwrbutton {
+	struct spi_device *client;
+	struct input_dev *input;
+	u8 msg_counter;
+};
+
+static int ec_input_read(struct ariel_pwrbutton *priv,
+			 struct ec_input_response *response)
+{
+	u8 read_request[] = { 0x00, 0x5a, 0xa5, 0x00, 0x00 };
+	struct spi_device *spi = priv->client;
+	struct spi_transfer t = {
+		.tx_buf = read_request,
+		.rx_buf = response,
+		.len = sizeof(read_request),
+	};
+
+	compiletime_assert(sizeof(read_request) == sizeof(*response),
+			   "SPI xfer request/response size mismatch");
+
+	return spi_sync_transfer(spi, &t, 1);
+}
+
+static irqreturn_t ec_input_interrupt(int irq, void *dev_id)
+{
+	struct ariel_pwrbutton *priv = dev_id;
+	struct spi_device *spi = priv->client;
+	struct ec_input_response response;
+	int error;
+	int i;
+
+	error = ec_input_read(priv, &response);
+	if (error < 0) {
+		dev_err(&spi->dev, "EC read failed: %d\n", error);
+		goto out;
+	}
+
+	if (priv->msg_counter == RESP_COUNTER(response)) {
+		dev_warn(&spi->dev, "No new data to read?\n");
+		goto out;
+	}
+
+	priv->msg_counter = RESP_COUNTER(response);
+
+	if (RESP_TYPE(response) != 0x3 && RESP_TYPE(response) != 0xc) {
+		dev_dbg(&spi->dev, "Ignoring message that's not kbd data\n");
+		goto out;
+	}
+
+	for (i = 0; i < RESP_SIZE(response); i++) {
+		switch (response.data[i]) {
+		case 0x74:
+			input_report_key(priv->input, KEY_POWER, 1);
+			input_sync(priv->input);
+			break;
+		case 0xf4:
+			input_report_key(priv->input, KEY_POWER, 0);
+			input_sync(priv->input);
+			break;
+		default:
+			dev_dbg(&spi->dev, "Unknown scan code: %02x\n",
+				response.data[i]);
+		}
+	}
+
+out:
+	return IRQ_HANDLED;
+}
+
+static int ariel_pwrbutton_probe(struct spi_device *spi)
+{
+	struct ec_input_response response;
+	struct ariel_pwrbutton *priv;
+	int error;
+
+	if (!spi->irq) {
+		dev_err(&spi->dev, "Missing IRQ.\n");
+		return -EINVAL;
+	}
+
+	priv = devm_kzalloc(&spi->dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	priv->client = spi;
+	spi_set_drvdata(spi, priv);
+
+	priv->input = devm_input_allocate_device(&spi->dev);
+	if (!priv->input)
+		return -ENOMEM;
+	priv->input->name = "Power Button";
+	priv->input->dev.parent = &spi->dev;
+	input_set_capability(priv->input, EV_KEY, KEY_POWER);
+	error = input_register_device(priv->input);
+	if (error) {
+		dev_err(&spi->dev, "error registering input device: %d\n", error);
+		return error;
+	}
+
+	error = ec_input_read(priv, &response);
+	if (error < 0) {
+		dev_err(&spi->dev, "EC read failed: %d\n", error);
+		return error;
+	}
+	priv->msg_counter = RESP_COUNTER(response);
+
+	error = devm_request_threaded_irq(&spi->dev, spi->irq, NULL,
+					  ec_input_interrupt,
+					  IRQF_ONESHOT,
+					  "Ariel EC Input", priv);
+
+	if (error) {
+		dev_err(&spi->dev, "Failed to request IRQ %d: %d\n",
+			spi->irq, error);
+		return error;
+	}
+
+	return 0;
+}
+
+static const struct of_device_id ariel_pwrbutton_of_match[] = {
+	{ .compatible = "dell,wyse-ariel-ec-input" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, ariel_pwrbutton_of_match);
+
+static const struct spi_device_id ariel_pwrbutton_spi_ids[] = {
+	{ .name = "wyse-ariel-ec-input" },
+	{ }
+};
+MODULE_DEVICE_TABLE(spi, ariel_pwrbutton_spi_ids);
+
+static struct spi_driver ariel_pwrbutton_driver = {
+	.driver = {
+		.name = "dell-wyse-ariel-ec-input",
+		.of_match_table = ariel_pwrbutton_of_match,
+	},
+	.probe = ariel_pwrbutton_probe,
+	.id_table = ariel_pwrbutton_spi_ids,
+};
+module_spi_driver(ariel_pwrbutton_driver);
+
+MODULE_AUTHOR("Lubomir Rintel <lkundrak@v3.sk>");
+MODULE_DESCRIPTION("Dell Wyse 3020 Power Button Input Driver");
+MODULE_LICENSE("Dual BSD/GPL");
diff --git a/drivers/input/misc/arizona-haptics.c b/drivers/input/misc/arizona-haptics.c
new file mode 100644
index 000000000..5fa1c9438
--- /dev/null
+++ b/drivers/input/misc/arizona-haptics.c
@@ -0,0 +1,215 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Arizona haptics driver
+ *
+ * Copyright 2012 Wolfson Microelectronics plc
+ *
+ * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/input.h>
+#include <linux/slab.h>
+
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+
+#include <linux/mfd/arizona/core.h>
+#include <linux/mfd/arizona/pdata.h>
+#include <linux/mfd/arizona/registers.h>
+
+struct arizona_haptics {
+	struct arizona *arizona;
+	struct input_dev *input_dev;
+	struct work_struct work;
+
+	struct mutex mutex;
+	u8 intensity;
+};
+
+static void arizona_haptics_work(struct work_struct *work)
+{
+	struct arizona_haptics *haptics = container_of(work,
+						       struct arizona_haptics,
+						       work);
+	struct arizona *arizona = haptics->arizona;
+	struct snd_soc_component *component =
+		snd_soc_dapm_to_component(arizona->dapm);
+	int ret;
+
+	if (!haptics->arizona->dapm) {
+		dev_err(arizona->dev, "No DAPM context\n");
+		return;
+	}
+
+	if (haptics->intensity) {
+		ret = regmap_update_bits(arizona->regmap,
+					 ARIZONA_HAPTICS_PHASE_2_INTENSITY,
+					 ARIZONA_PHASE2_INTENSITY_MASK,
+					 haptics->intensity);
+		if (ret != 0) {
+			dev_err(arizona->dev, "Failed to set intensity: %d\n",
+				ret);
+			return;
+		}
+
+		/* This enable sequence will be a noop if already enabled */
+		ret = regmap_update_bits(arizona->regmap,
+					 ARIZONA_HAPTICS_CONTROL_1,
+					 ARIZONA_HAP_CTRL_MASK,
+					 1 << ARIZONA_HAP_CTRL_SHIFT);
+		if (ret != 0) {
+			dev_err(arizona->dev, "Failed to start haptics: %d\n",
+				ret);
+			return;
+		}
+
+		ret = snd_soc_component_enable_pin(component, "HAPTICS");
+		if (ret != 0) {
+			dev_err(arizona->dev, "Failed to start HAPTICS: %d\n",
+				ret);
+			return;
+		}
+
+		ret = snd_soc_dapm_sync(arizona->dapm);
+		if (ret != 0) {
+			dev_err(arizona->dev, "Failed to sync DAPM: %d\n",
+				ret);
+			return;
+		}
+	} else {
+		/* This disable sequence will be a noop if already enabled */
+		ret = snd_soc_component_disable_pin(component, "HAPTICS");
+		if (ret != 0) {
+			dev_err(arizona->dev, "Failed to disable HAPTICS: %d\n",
+				ret);
+			return;
+		}
+
+		ret = snd_soc_dapm_sync(arizona->dapm);
+		if (ret != 0) {
+			dev_err(arizona->dev, "Failed to sync DAPM: %d\n",
+				ret);
+			return;
+		}
+
+		ret = regmap_update_bits(arizona->regmap,
+					 ARIZONA_HAPTICS_CONTROL_1,
+					 ARIZONA_HAP_CTRL_MASK, 0);
+		if (ret != 0) {
+			dev_err(arizona->dev, "Failed to stop haptics: %d\n",
+				ret);
+			return;
+		}
+	}
+}
+
+static int arizona_haptics_play(struct input_dev *input, void *data,
+				struct ff_effect *effect)
+{
+	struct arizona_haptics *haptics = input_get_drvdata(input);
+	struct arizona *arizona = haptics->arizona;
+
+	if (!arizona->dapm) {
+		dev_err(arizona->dev, "No DAPM context\n");
+		return -EBUSY;
+	}
+
+	if (effect->u.rumble.strong_magnitude) {
+		/* Scale the magnitude into the range the device supports */
+		if (arizona->pdata.hap_act) {
+			haptics->intensity =
+				effect->u.rumble.strong_magnitude >> 9;
+			if (effect->direction < 0x8000)
+				haptics->intensity += 0x7f;
+		} else {
+			haptics->intensity =
+				effect->u.rumble.strong_magnitude >> 8;
+		}
+	} else {
+		haptics->intensity = 0;
+	}
+
+	schedule_work(&haptics->work);
+
+	return 0;
+}
+
+static void arizona_haptics_close(struct input_dev *input)
+{
+	struct arizona_haptics *haptics = input_get_drvdata(input);
+	struct snd_soc_component *component;
+
+	cancel_work_sync(&haptics->work);
+
+	if (haptics->arizona->dapm) {
+		component = snd_soc_dapm_to_component(haptics->arizona->dapm);
+		snd_soc_component_disable_pin(component, "HAPTICS");
+	}
+}
+
+static int arizona_haptics_probe(struct platform_device *pdev)
+{
+	struct arizona *arizona = dev_get_drvdata(pdev->dev.parent);
+	struct arizona_haptics *haptics;
+	int ret;
+
+	haptics = devm_kzalloc(&pdev->dev, sizeof(*haptics), GFP_KERNEL);
+	if (!haptics)
+		return -ENOMEM;
+
+	haptics->arizona = arizona;
+
+	ret = regmap_update_bits(arizona->regmap, ARIZONA_HAPTICS_CONTROL_1,
+				 ARIZONA_HAP_ACT, arizona->pdata.hap_act);
+	if (ret != 0) {
+		dev_err(arizona->dev, "Failed to set haptics actuator: %d\n",
+			ret);
+		return ret;
+	}
+
+	INIT_WORK(&haptics->work, arizona_haptics_work);
+
+	haptics->input_dev = devm_input_allocate_device(&pdev->dev);
+	if (!haptics->input_dev) {
+		dev_err(arizona->dev, "Failed to allocate input device\n");
+		return -ENOMEM;
+	}
+
+	input_set_drvdata(haptics->input_dev, haptics);
+
+	haptics->input_dev->name = "arizona:haptics";
+	haptics->input_dev->close = arizona_haptics_close;
+	__set_bit(FF_RUMBLE, haptics->input_dev->ffbit);
+
+	ret = input_ff_create_memless(haptics->input_dev, NULL,
+				      arizona_haptics_play);
+	if (ret < 0) {
+		dev_err(arizona->dev, "input_ff_create_memless() failed: %d\n",
+			ret);
+		return ret;
+	}
+
+	ret = input_register_device(haptics->input_dev);
+	if (ret < 0) {
+		dev_err(arizona->dev, "couldn't register input device: %d\n",
+			ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+static struct platform_driver arizona_haptics_driver = {
+	.probe		= arizona_haptics_probe,
+	.driver		= {
+		.name	= "arizona-haptics",
+	},
+};
+module_platform_driver(arizona_haptics_driver);
+
+MODULE_ALIAS("platform:arizona-haptics");
+MODULE_DESCRIPTION("Arizona haptics driver");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
diff --git a/drivers/input/misc/atc260x-onkey.c b/drivers/input/misc/atc260x-onkey.c
new file mode 100644
index 000000000..999aabf9d
--- /dev/null
+++ b/drivers/input/misc/atc260x-onkey.c
@@ -0,0 +1,305 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Onkey driver for Actions Semi ATC260x PMICs.
+ *
+ * Copyright (c) 2020 Cristian Ciocaltea <cristian.ciocaltea@gmail.com>
+ */
+
+#include <linux/bitfield.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/mfd/atc260x/core.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+
+/* <2s for short press, >2s for long press */
+#define KEY_PRESS_TIME_SEC	2
+
+/* Driver internals */
+enum atc260x_onkey_reset_status {
+	KEY_RESET_HW_DEFAULT,
+	KEY_RESET_DISABLED,
+	KEY_RESET_USER_SEL,
+};
+
+struct atc260x_onkey_params {
+	u32 reg_int_ctl;
+	u32 kdwn_state_bm;
+	u32 long_int_pnd_bm;
+	u32 short_int_pnd_bm;
+	u32 kdwn_int_pnd_bm;
+	u32 press_int_en_bm;
+	u32 kdwn_int_en_bm;
+	u32 press_time_bm;
+	u32 reset_en_bm;
+	u32 reset_time_bm;
+};
+
+struct atc260x_onkey {
+	struct atc260x *atc260x;
+	const struct atc260x_onkey_params *params;
+	struct input_dev *input_dev;
+	struct delayed_work work;
+	int irq;
+};
+
+static const struct atc260x_onkey_params atc2603c_onkey_params = {
+	.reg_int_ctl		= ATC2603C_PMU_SYS_CTL2,
+	.long_int_pnd_bm	= ATC2603C_PMU_SYS_CTL2_ONOFF_LONG_PRESS,
+	.short_int_pnd_bm	= ATC2603C_PMU_SYS_CTL2_ONOFF_SHORT_PRESS,
+	.kdwn_int_pnd_bm	= ATC2603C_PMU_SYS_CTL2_ONOFF_PRESS_PD,
+	.press_int_en_bm	= ATC2603C_PMU_SYS_CTL2_ONOFF_INT_EN,
+	.kdwn_int_en_bm		= ATC2603C_PMU_SYS_CTL2_ONOFF_PRESS_INT_EN,
+	.kdwn_state_bm		= ATC2603C_PMU_SYS_CTL2_ONOFF_PRESS,
+	.press_time_bm		= ATC2603C_PMU_SYS_CTL2_ONOFF_PRESS_TIME,
+	.reset_en_bm		= ATC2603C_PMU_SYS_CTL2_ONOFF_PRESS_RESET_EN,
+	.reset_time_bm		= ATC2603C_PMU_SYS_CTL2_ONOFF_RESET_TIME_SEL,
+};
+
+static const struct atc260x_onkey_params atc2609a_onkey_params = {
+	.reg_int_ctl		= ATC2609A_PMU_SYS_CTL2,
+	.long_int_pnd_bm	= ATC2609A_PMU_SYS_CTL2_ONOFF_LONG_PRESS,
+	.short_int_pnd_bm	= ATC2609A_PMU_SYS_CTL2_ONOFF_SHORT_PRESS,
+	.kdwn_int_pnd_bm	= ATC2609A_PMU_SYS_CTL2_ONOFF_PRESS_PD,
+	.press_int_en_bm	= ATC2609A_PMU_SYS_CTL2_ONOFF_LSP_INT_EN,
+	.kdwn_int_en_bm		= ATC2609A_PMU_SYS_CTL2_ONOFF_PRESS_INT_EN,
+	.kdwn_state_bm		= ATC2609A_PMU_SYS_CTL2_ONOFF_PRESS,
+	.press_time_bm		= ATC2609A_PMU_SYS_CTL2_ONOFF_PRESS_TIME,
+	.reset_en_bm		= ATC2609A_PMU_SYS_CTL2_ONOFF_RESET_EN,
+	.reset_time_bm		= ATC2609A_PMU_SYS_CTL2_ONOFF_RESET_TIME_SEL,
+};
+
+static int atc2603x_onkey_hw_init(struct atc260x_onkey *onkey,
+				  enum atc260x_onkey_reset_status reset_status,
+				  u32 reset_time, u32 press_time)
+{
+	u32 reg_bm, reg_val;
+
+	reg_bm = onkey->params->long_int_pnd_bm |
+		 onkey->params->short_int_pnd_bm |
+		 onkey->params->kdwn_int_pnd_bm |
+		 onkey->params->press_int_en_bm |
+		 onkey->params->kdwn_int_en_bm;
+
+	reg_val = reg_bm | press_time;
+	reg_bm |= onkey->params->press_time_bm;
+
+	if (reset_status == KEY_RESET_DISABLED) {
+		reg_bm |= onkey->params->reset_en_bm;
+	} else if (reset_status == KEY_RESET_USER_SEL) {
+		reg_bm |= onkey->params->reset_en_bm |
+			  onkey->params->reset_time_bm;
+		reg_val |= onkey->params->reset_en_bm | reset_time;
+	}
+
+	return regmap_update_bits(onkey->atc260x->regmap,
+				  onkey->params->reg_int_ctl, reg_bm, reg_val);
+}
+
+static void atc260x_onkey_query(struct atc260x_onkey *onkey)
+{
+	u32 reg_bits;
+	int ret, key_down;
+
+	ret = regmap_read(onkey->atc260x->regmap,
+			  onkey->params->reg_int_ctl, &key_down);
+	if (ret) {
+		key_down = 1;
+		dev_err(onkey->atc260x->dev,
+			"Failed to read onkey status: %d\n", ret);
+	} else {
+		key_down &= onkey->params->kdwn_state_bm;
+	}
+
+	/*
+	 * The hardware generates interrupt only when the onkey pin is
+	 * asserted. Hence, the deassertion of the pin is simulated through
+	 * work queue.
+	 */
+	if (key_down) {
+		schedule_delayed_work(&onkey->work, msecs_to_jiffies(200));
+		return;
+	}
+
+	/*
+	 * The key-down status bit is cleared when the On/Off button
+	 * is released.
+	 */
+	input_report_key(onkey->input_dev, KEY_POWER, 0);
+	input_sync(onkey->input_dev);
+
+	reg_bits = onkey->params->long_int_pnd_bm |
+		   onkey->params->short_int_pnd_bm |
+		   onkey->params->kdwn_int_pnd_bm |
+		   onkey->params->press_int_en_bm |
+		   onkey->params->kdwn_int_en_bm;
+
+	/* Clear key press pending events and enable key press interrupts. */
+	regmap_update_bits(onkey->atc260x->regmap, onkey->params->reg_int_ctl,
+			   reg_bits, reg_bits);
+}
+
+static void atc260x_onkey_work(struct work_struct *work)
+{
+	struct atc260x_onkey *onkey = container_of(work, struct atc260x_onkey,
+						   work.work);
+	atc260x_onkey_query(onkey);
+}
+
+static irqreturn_t atc260x_onkey_irq(int irq, void *data)
+{
+	struct atc260x_onkey *onkey = data;
+	int ret;
+
+	/* Disable key press interrupts. */
+	ret = regmap_update_bits(onkey->atc260x->regmap,
+				 onkey->params->reg_int_ctl,
+				 onkey->params->press_int_en_bm |
+				 onkey->params->kdwn_int_en_bm, 0);
+	if (ret)
+		dev_err(onkey->atc260x->dev,
+			"Failed to disable interrupts: %d\n", ret);
+
+	input_report_key(onkey->input_dev, KEY_POWER, 1);
+	input_sync(onkey->input_dev);
+
+	atc260x_onkey_query(onkey);
+
+	return IRQ_HANDLED;
+}
+
+static int atc260x_onkey_open(struct input_dev *dev)
+{
+	struct atc260x_onkey *onkey = input_get_drvdata(dev);
+
+	enable_irq(onkey->irq);
+
+	return 0;
+}
+
+static void atc260x_onkey_close(struct input_dev *dev)
+{
+	struct atc260x_onkey *onkey = input_get_drvdata(dev);
+
+	disable_irq(onkey->irq);
+	cancel_delayed_work_sync(&onkey->work);
+}
+
+static int atc260x_onkey_probe(struct platform_device *pdev)
+{
+	struct atc260x *atc260x = dev_get_drvdata(pdev->dev.parent);
+	struct atc260x_onkey *onkey;
+	struct input_dev *input_dev;
+	enum atc260x_onkey_reset_status reset_status;
+	u32 press_time = KEY_PRESS_TIME_SEC, reset_time = 0;
+	int val, error;
+
+	onkey = devm_kzalloc(&pdev->dev, sizeof(*onkey), GFP_KERNEL);
+	if (!onkey)
+		return -ENOMEM;
+
+	error = device_property_read_u32(pdev->dev.parent,
+					 "reset-time-sec", &val);
+	if (error) {
+		reset_status = KEY_RESET_HW_DEFAULT;
+	} else if (val) {
+		if (val < 6 || val > 12) {
+			dev_err(&pdev->dev, "reset-time-sec out of range\n");
+			return -EINVAL;
+		}
+
+		reset_status = KEY_RESET_USER_SEL;
+		reset_time = (val - 6) / 2;
+	} else {
+		reset_status = KEY_RESET_DISABLED;
+		dev_dbg(&pdev->dev, "Disabled reset on long-press\n");
+	}
+
+	switch (atc260x->ic_type) {
+	case ATC2603C:
+		onkey->params = &atc2603c_onkey_params;
+		press_time = FIELD_PREP(ATC2603C_PMU_SYS_CTL2_ONOFF_PRESS_TIME,
+					press_time);
+		reset_time = FIELD_PREP(ATC2603C_PMU_SYS_CTL2_ONOFF_RESET_TIME_SEL,
+					reset_time);
+		break;
+	case ATC2609A:
+		onkey->params = &atc2609a_onkey_params;
+		press_time = FIELD_PREP(ATC2609A_PMU_SYS_CTL2_ONOFF_PRESS_TIME,
+					press_time);
+		reset_time = FIELD_PREP(ATC2609A_PMU_SYS_CTL2_ONOFF_RESET_TIME_SEL,
+					reset_time);
+		break;
+	default:
+		dev_err(&pdev->dev,
+			"OnKey not supported for ATC260x PMIC type: %u\n",
+			atc260x->ic_type);
+		return -EINVAL;
+	}
+
+	input_dev = devm_input_allocate_device(&pdev->dev);
+	if (!input_dev) {
+		dev_err(&pdev->dev, "Failed to allocate input device\n");
+		return -ENOMEM;
+	}
+
+	onkey->input_dev = input_dev;
+	onkey->atc260x = atc260x;
+
+	input_dev->name = "atc260x-onkey";
+	input_dev->phys = "atc260x-onkey/input0";
+	input_dev->open = atc260x_onkey_open;
+	input_dev->close = atc260x_onkey_close;
+
+	input_set_capability(input_dev, EV_KEY, KEY_POWER);
+	input_set_drvdata(input_dev, onkey);
+
+	INIT_DELAYED_WORK(&onkey->work, atc260x_onkey_work);
+
+	onkey->irq = platform_get_irq(pdev, 0);
+	if (onkey->irq < 0)
+		return onkey->irq;
+
+	error = devm_request_threaded_irq(&pdev->dev, onkey->irq, NULL,
+					  atc260x_onkey_irq, IRQF_ONESHOT,
+					  dev_name(&pdev->dev), onkey);
+	if (error) {
+		dev_err(&pdev->dev,
+			"Failed to register IRQ %d: %d\n", onkey->irq, error);
+		return error;
+	}
+
+	/* Keep IRQ disabled until atc260x_onkey_open() is called. */
+	disable_irq(onkey->irq);
+
+	error = input_register_device(input_dev);
+	if (error) {
+		dev_err(&pdev->dev,
+			"Failed to register input device: %d\n", error);
+		return error;
+	}
+
+	error = atc2603x_onkey_hw_init(onkey, reset_status,
+				       reset_time, press_time);
+	if (error)
+		return error;
+
+	device_init_wakeup(&pdev->dev, true);
+
+	return 0;
+}
+
+static struct platform_driver atc260x_onkey_driver = {
+	.probe	= atc260x_onkey_probe,
+	.driver	= {
+		.name = "atc260x-onkey",
+	},
+};
+
+module_platform_driver(atc260x_onkey_driver);
+
+MODULE_DESCRIPTION("Onkey driver for ATC260x PMICs");
+MODULE_AUTHOR("Cristian Ciocaltea <cristian.ciocaltea@gmail.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/misc/ati_remote2.c b/drivers/input/misc/ati_remote2.c
new file mode 100644
index 000000000..946bf75aa
--- /dev/null
+++ b/drivers/input/misc/ati_remote2.c
@@ -0,0 +1,1035 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * ati_remote2 - ATI/Philips USB RF remote driver
+ *
+ * Copyright (C) 2005-2008 Ville Syrjala <syrjala@sci.fi>
+ * Copyright (C) 2007-2008 Peter Stokes <linux@dadeos.co.uk>
+ */
+
+#include <linux/usb/input.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+
+#define DRIVER_DESC    "ATI/Philips USB RF remote driver"
+
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_AUTHOR("Ville Syrjala <syrjala@sci.fi>");
+MODULE_LICENSE("GPL");
+
+/*
+ * ATI Remote Wonder II Channel Configuration
+ *
+ * The remote control can be assigned one of sixteen "channels" in order to facilitate
+ * the use of multiple remote controls within range of each other.
+ * A remote's "channel" may be altered by pressing and holding the "PC" button for
+ * approximately 3 seconds, after which the button will slowly flash the count of the
+ * currently configured "channel", using the numeric keypad enter a number between 1 and
+ * 16 and then press the "PC" button again, the button will slowly flash the count of the
+ * newly configured "channel".
+ */
+
+enum {
+	ATI_REMOTE2_MAX_CHANNEL_MASK = 0xFFFF,
+	ATI_REMOTE2_MAX_MODE_MASK = 0x1F,
+};
+
+static int ati_remote2_set_mask(const char *val,
+				const struct kernel_param *kp,
+				unsigned int max)
+{
+	unsigned int mask;
+	int ret;
+
+	if (!val)
+		return -EINVAL;
+
+	ret = kstrtouint(val, 0, &mask);
+	if (ret)
+		return ret;
+
+	if (mask & ~max)
+		return -EINVAL;
+
+	*(unsigned int *)kp->arg = mask;
+
+	return 0;
+}
+
+static int ati_remote2_set_channel_mask(const char *val,
+					const struct kernel_param *kp)
+{
+	pr_debug("%s()\n", __func__);
+
+	return ati_remote2_set_mask(val, kp, ATI_REMOTE2_MAX_CHANNEL_MASK);
+}
+
+static int ati_remote2_get_channel_mask(char *buffer,
+					const struct kernel_param *kp)
+{
+	pr_debug("%s()\n", __func__);
+
+	return sprintf(buffer, "0x%04x\n", *(unsigned int *)kp->arg);
+}
+
+static int ati_remote2_set_mode_mask(const char *val,
+				     const struct kernel_param *kp)
+{
+	pr_debug("%s()\n", __func__);
+
+	return ati_remote2_set_mask(val, kp, ATI_REMOTE2_MAX_MODE_MASK);
+}
+
+static int ati_remote2_get_mode_mask(char *buffer,
+				     const struct kernel_param *kp)
+{
+	pr_debug("%s()\n", __func__);
+
+	return sprintf(buffer, "0x%02x\n", *(unsigned int *)kp->arg);
+}
+
+static unsigned int channel_mask = ATI_REMOTE2_MAX_CHANNEL_MASK;
+#define param_check_channel_mask(name, p) __param_check(name, p, unsigned int)
+static const struct kernel_param_ops param_ops_channel_mask = {
+	.set = ati_remote2_set_channel_mask,
+	.get = ati_remote2_get_channel_mask,
+};
+module_param(channel_mask, channel_mask, 0644);
+MODULE_PARM_DESC(channel_mask, "Bitmask of channels to accept <15:Channel16>...<1:Channel2><0:Channel1>");
+
+static unsigned int mode_mask = ATI_REMOTE2_MAX_MODE_MASK;
+#define param_check_mode_mask(name, p) __param_check(name, p, unsigned int)
+static const struct kernel_param_ops param_ops_mode_mask = {
+	.set = ati_remote2_set_mode_mask,
+	.get = ati_remote2_get_mode_mask,
+};
+module_param(mode_mask, mode_mask, 0644);
+MODULE_PARM_DESC(mode_mask, "Bitmask of modes to accept <4:PC><3:AUX4><2:AUX3><1:AUX2><0:AUX1>");
+
+static const struct usb_device_id ati_remote2_id_table[] = {
+	{ USB_DEVICE(0x0471, 0x0602) },	/* ATI Remote Wonder II */
+	{ }
+};
+MODULE_DEVICE_TABLE(usb, ati_remote2_id_table);
+
+static DEFINE_MUTEX(ati_remote2_mutex);
+
+enum {
+	ATI_REMOTE2_OPENED = 0x1,
+	ATI_REMOTE2_SUSPENDED = 0x2,
+};
+
+enum {
+	ATI_REMOTE2_AUX1,
+	ATI_REMOTE2_AUX2,
+	ATI_REMOTE2_AUX3,
+	ATI_REMOTE2_AUX4,
+	ATI_REMOTE2_PC,
+	ATI_REMOTE2_MODES,
+};
+
+static const struct {
+	u8  hw_code;
+	u16 keycode;
+} ati_remote2_key_table[] = {
+	{ 0x00, KEY_0 },
+	{ 0x01, KEY_1 },
+	{ 0x02, KEY_2 },
+	{ 0x03, KEY_3 },
+	{ 0x04, KEY_4 },
+	{ 0x05, KEY_5 },
+	{ 0x06, KEY_6 },
+	{ 0x07, KEY_7 },
+	{ 0x08, KEY_8 },
+	{ 0x09, KEY_9 },
+	{ 0x0c, KEY_POWER },
+	{ 0x0d, KEY_MUTE },
+	{ 0x10, KEY_VOLUMEUP },
+	{ 0x11, KEY_VOLUMEDOWN },
+	{ 0x20, KEY_CHANNELUP },
+	{ 0x21, KEY_CHANNELDOWN },
+	{ 0x28, KEY_FORWARD },
+	{ 0x29, KEY_REWIND },
+	{ 0x2c, KEY_PLAY },
+	{ 0x30, KEY_PAUSE },
+	{ 0x31, KEY_STOP },
+	{ 0x37, KEY_RECORD },
+	{ 0x38, KEY_DVD },
+	{ 0x39, KEY_TV },
+	{ 0x3f, KEY_PROG1 }, /* AUX1-AUX4 and PC */
+	{ 0x54, KEY_MENU },
+	{ 0x58, KEY_UP },
+	{ 0x59, KEY_DOWN },
+	{ 0x5a, KEY_LEFT },
+	{ 0x5b, KEY_RIGHT },
+	{ 0x5c, KEY_OK },
+	{ 0x78, KEY_A },
+	{ 0x79, KEY_B },
+	{ 0x7a, KEY_C },
+	{ 0x7b, KEY_D },
+	{ 0x7c, KEY_E },
+	{ 0x7d, KEY_F },
+	{ 0x82, KEY_ENTER },
+	{ 0x8e, KEY_VENDOR },
+	{ 0x96, KEY_COFFEE },
+	{ 0xa9, BTN_LEFT },
+	{ 0xaa, BTN_RIGHT },
+	{ 0xbe, KEY_QUESTION },
+	{ 0xd0, KEY_EDIT },
+	{ 0xd5, KEY_FRONT },
+	{ 0xf9, KEY_INFO },
+};
+
+struct ati_remote2 {
+	struct input_dev *idev;
+	struct usb_device *udev;
+
+	struct usb_interface *intf[2];
+	struct usb_endpoint_descriptor *ep[2];
+	struct urb *urb[2];
+	void *buf[2];
+	dma_addr_t buf_dma[2];
+
+	unsigned long jiffies;
+	int mode;
+
+	char name[64];
+	char phys[64];
+
+	/* Each mode (AUX1-AUX4 and PC) can have an independent keymap. */
+	u16 keycode[ATI_REMOTE2_MODES][ARRAY_SIZE(ati_remote2_key_table)];
+
+	unsigned int flags;
+
+	unsigned int channel_mask;
+	unsigned int mode_mask;
+};
+
+static int ati_remote2_probe(struct usb_interface *interface, const struct usb_device_id *id);
+static void ati_remote2_disconnect(struct usb_interface *interface);
+static int ati_remote2_suspend(struct usb_interface *interface, pm_message_t message);
+static int ati_remote2_resume(struct usb_interface *interface);
+static int ati_remote2_reset_resume(struct usb_interface *interface);
+static int ati_remote2_pre_reset(struct usb_interface *interface);
+static int ati_remote2_post_reset(struct usb_interface *interface);
+
+static struct usb_driver ati_remote2_driver = {
+	.name       = "ati_remote2",
+	.probe      = ati_remote2_probe,
+	.disconnect = ati_remote2_disconnect,
+	.id_table   = ati_remote2_id_table,
+	.suspend    = ati_remote2_suspend,
+	.resume     = ati_remote2_resume,
+	.reset_resume = ati_remote2_reset_resume,
+	.pre_reset  = ati_remote2_pre_reset,
+	.post_reset = ati_remote2_post_reset,
+	.supports_autosuspend = 1,
+};
+
+static int ati_remote2_submit_urbs(struct ati_remote2 *ar2)
+{
+	int r;
+
+	r = usb_submit_urb(ar2->urb[0], GFP_KERNEL);
+	if (r) {
+		dev_err(&ar2->intf[0]->dev,
+			"%s(): usb_submit_urb() = %d\n", __func__, r);
+		return r;
+	}
+	r = usb_submit_urb(ar2->urb[1], GFP_KERNEL);
+	if (r) {
+		usb_kill_urb(ar2->urb[0]);
+		dev_err(&ar2->intf[1]->dev,
+			"%s(): usb_submit_urb() = %d\n", __func__, r);
+		return r;
+	}
+
+	return 0;
+}
+
+static void ati_remote2_kill_urbs(struct ati_remote2 *ar2)
+{
+	usb_kill_urb(ar2->urb[1]);
+	usb_kill_urb(ar2->urb[0]);
+}
+
+static int ati_remote2_open(struct input_dev *idev)
+{
+	struct ati_remote2 *ar2 = input_get_drvdata(idev);
+	int r;
+
+	dev_dbg(&ar2->intf[0]->dev, "%s()\n", __func__);
+
+	r = usb_autopm_get_interface(ar2->intf[0]);
+	if (r) {
+		dev_err(&ar2->intf[0]->dev,
+			"%s(): usb_autopm_get_interface() = %d\n", __func__, r);
+		goto fail1;
+	}
+
+	mutex_lock(&ati_remote2_mutex);
+
+	if (!(ar2->flags & ATI_REMOTE2_SUSPENDED)) {
+		r = ati_remote2_submit_urbs(ar2);
+		if (r)
+			goto fail2;
+	}
+
+	ar2->flags |= ATI_REMOTE2_OPENED;
+
+	mutex_unlock(&ati_remote2_mutex);
+
+	usb_autopm_put_interface(ar2->intf[0]);
+
+	return 0;
+
+ fail2:
+	mutex_unlock(&ati_remote2_mutex);
+	usb_autopm_put_interface(ar2->intf[0]);
+ fail1:
+	return r;
+}
+
+static void ati_remote2_close(struct input_dev *idev)
+{
+	struct ati_remote2 *ar2 = input_get_drvdata(idev);
+
+	dev_dbg(&ar2->intf[0]->dev, "%s()\n", __func__);
+
+	mutex_lock(&ati_remote2_mutex);
+
+	if (!(ar2->flags & ATI_REMOTE2_SUSPENDED))
+		ati_remote2_kill_urbs(ar2);
+
+	ar2->flags &= ~ATI_REMOTE2_OPENED;
+
+	mutex_unlock(&ati_remote2_mutex);
+}
+
+static void ati_remote2_input_mouse(struct ati_remote2 *ar2)
+{
+	struct input_dev *idev = ar2->idev;
+	u8 *data = ar2->buf[0];
+	int channel, mode;
+
+	channel = data[0] >> 4;
+
+	if (!((1 << channel) & ar2->channel_mask))
+		return;
+
+	mode = data[0] & 0x0F;
+
+	if (mode > ATI_REMOTE2_PC) {
+		dev_err(&ar2->intf[0]->dev,
+			"Unknown mode byte (%02x %02x %02x %02x)\n",
+			data[3], data[2], data[1], data[0]);
+		return;
+	}
+
+	if (!((1 << mode) & ar2->mode_mask))
+		return;
+
+	input_event(idev, EV_REL, REL_X, (s8) data[1]);
+	input_event(idev, EV_REL, REL_Y, (s8) data[2]);
+	input_sync(idev);
+}
+
+static int ati_remote2_lookup(unsigned int hw_code)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(ati_remote2_key_table); i++)
+		if (ati_remote2_key_table[i].hw_code == hw_code)
+			return i;
+
+	return -1;
+}
+
+static void ati_remote2_input_key(struct ati_remote2 *ar2)
+{
+	struct input_dev *idev = ar2->idev;
+	u8 *data = ar2->buf[1];
+	int channel, mode, hw_code, index;
+
+	channel = data[0] >> 4;
+
+	if (!((1 << channel) & ar2->channel_mask))
+		return;
+
+	mode = data[0] & 0x0F;
+
+	if (mode > ATI_REMOTE2_PC) {
+		dev_err(&ar2->intf[1]->dev,
+			"Unknown mode byte (%02x %02x %02x %02x)\n",
+			data[3], data[2], data[1], data[0]);
+		return;
+	}
+
+	hw_code = data[2];
+	if (hw_code == 0x3f) {
+		/*
+		 * For some incomprehensible reason the mouse pad generates
+		 * events which look identical to the events from the last
+		 * pressed mode key. Naturally we don't want to generate key
+		 * events for the mouse pad so we filter out any subsequent
+		 * events from the same mode key.
+		 */
+		if (ar2->mode == mode)
+			return;
+
+		if (data[1] == 0)
+			ar2->mode = mode;
+	}
+
+	if (!((1 << mode) & ar2->mode_mask))
+		return;
+
+	index = ati_remote2_lookup(hw_code);
+	if (index < 0) {
+		dev_err(&ar2->intf[1]->dev,
+			"Unknown code byte (%02x %02x %02x %02x)\n",
+			data[3], data[2], data[1], data[0]);
+		return;
+	}
+
+	switch (data[1]) {
+	case 0:	/* release */
+		break;
+	case 1:	/* press */
+		ar2->jiffies = jiffies + msecs_to_jiffies(idev->rep[REP_DELAY]);
+		break;
+	case 2:	/* repeat */
+
+		/* No repeat for mouse buttons. */
+		if (ar2->keycode[mode][index] == BTN_LEFT ||
+		    ar2->keycode[mode][index] == BTN_RIGHT)
+			return;
+
+		if (!time_after_eq(jiffies, ar2->jiffies))
+			return;
+
+		ar2->jiffies = jiffies + msecs_to_jiffies(idev->rep[REP_PERIOD]);
+		break;
+	default:
+		dev_err(&ar2->intf[1]->dev,
+			"Unknown state byte (%02x %02x %02x %02x)\n",
+			data[3], data[2], data[1], data[0]);
+		return;
+	}
+
+	input_event(idev, EV_KEY, ar2->keycode[mode][index], data[1]);
+	input_sync(idev);
+}
+
+static void ati_remote2_complete_mouse(struct urb *urb)
+{
+	struct ati_remote2 *ar2 = urb->context;
+	int r;
+
+	switch (urb->status) {
+	case 0:
+		usb_mark_last_busy(ar2->udev);
+		ati_remote2_input_mouse(ar2);
+		break;
+	case -ENOENT:
+	case -EILSEQ:
+	case -ECONNRESET:
+	case -ESHUTDOWN:
+		dev_dbg(&ar2->intf[0]->dev,
+			"%s(): urb status = %d\n", __func__, urb->status);
+		return;
+	default:
+		usb_mark_last_busy(ar2->udev);
+		dev_err(&ar2->intf[0]->dev,
+			"%s(): urb status = %d\n", __func__, urb->status);
+	}
+
+	r = usb_submit_urb(urb, GFP_ATOMIC);
+	if (r)
+		dev_err(&ar2->intf[0]->dev,
+			"%s(): usb_submit_urb() = %d\n", __func__, r);
+}
+
+static void ati_remote2_complete_key(struct urb *urb)
+{
+	struct ati_remote2 *ar2 = urb->context;
+	int r;
+
+	switch (urb->status) {
+	case 0:
+		usb_mark_last_busy(ar2->udev);
+		ati_remote2_input_key(ar2);
+		break;
+	case -ENOENT:
+	case -EILSEQ:
+	case -ECONNRESET:
+	case -ESHUTDOWN:
+		dev_dbg(&ar2->intf[1]->dev,
+			"%s(): urb status = %d\n", __func__, urb->status);
+		return;
+	default:
+		usb_mark_last_busy(ar2->udev);
+		dev_err(&ar2->intf[1]->dev,
+			"%s(): urb status = %d\n", __func__, urb->status);
+	}
+
+	r = usb_submit_urb(urb, GFP_ATOMIC);
+	if (r)
+		dev_err(&ar2->intf[1]->dev,
+			"%s(): usb_submit_urb() = %d\n", __func__, r);
+}
+
+static int ati_remote2_getkeycode(struct input_dev *idev,
+				  struct input_keymap_entry *ke)
+{
+	struct ati_remote2 *ar2 = input_get_drvdata(idev);
+	unsigned int mode;
+	int offset;
+	unsigned int index;
+	unsigned int scancode;
+
+	if (ke->flags & INPUT_KEYMAP_BY_INDEX) {
+		index = ke->index;
+		if (index >= ATI_REMOTE2_MODES *
+				ARRAY_SIZE(ati_remote2_key_table))
+			return -EINVAL;
+
+		mode = ke->index / ARRAY_SIZE(ati_remote2_key_table);
+		offset = ke->index % ARRAY_SIZE(ati_remote2_key_table);
+		scancode = (mode << 8) + ati_remote2_key_table[offset].hw_code;
+	} else {
+		if (input_scancode_to_scalar(ke, &scancode))
+			return -EINVAL;
+
+		mode = scancode >> 8;
+		if (mode > ATI_REMOTE2_PC)
+			return -EINVAL;
+
+		offset = ati_remote2_lookup(scancode & 0xff);
+		if (offset < 0)
+			return -EINVAL;
+
+		index = mode * ARRAY_SIZE(ati_remote2_key_table) + offset;
+	}
+
+	ke->keycode = ar2->keycode[mode][offset];
+	ke->len = sizeof(scancode);
+	memcpy(&ke->scancode, &scancode, sizeof(scancode));
+	ke->index = index;
+
+	return 0;
+}
+
+static int ati_remote2_setkeycode(struct input_dev *idev,
+				  const struct input_keymap_entry *ke,
+				  unsigned int *old_keycode)
+{
+	struct ati_remote2 *ar2 = input_get_drvdata(idev);
+	unsigned int mode;
+	int offset;
+	unsigned int index;
+	unsigned int scancode;
+
+	if (ke->flags & INPUT_KEYMAP_BY_INDEX) {
+		if (ke->index >= ATI_REMOTE2_MODES *
+				ARRAY_SIZE(ati_remote2_key_table))
+			return -EINVAL;
+
+		mode = ke->index / ARRAY_SIZE(ati_remote2_key_table);
+		offset = ke->index % ARRAY_SIZE(ati_remote2_key_table);
+	} else {
+		if (input_scancode_to_scalar(ke, &scancode))
+			return -EINVAL;
+
+		mode = scancode >> 8;
+		if (mode > ATI_REMOTE2_PC)
+			return -EINVAL;
+
+		offset = ati_remote2_lookup(scancode & 0xff);
+		if (offset < 0)
+			return -EINVAL;
+	}
+
+	*old_keycode = ar2->keycode[mode][offset];
+	ar2->keycode[mode][offset] = ke->keycode;
+	__set_bit(ke->keycode, idev->keybit);
+
+	for (mode = 0; mode < ATI_REMOTE2_MODES; mode++) {
+		for (index = 0; index < ARRAY_SIZE(ati_remote2_key_table); index++) {
+			if (ar2->keycode[mode][index] == *old_keycode)
+				return 0;
+		}
+	}
+
+	__clear_bit(*old_keycode, idev->keybit);
+
+	return 0;
+}
+
+static int ati_remote2_input_init(struct ati_remote2 *ar2)
+{
+	struct input_dev *idev;
+	int index, mode, retval;
+
+	idev = input_allocate_device();
+	if (!idev)
+		return -ENOMEM;
+
+	ar2->idev = idev;
+	input_set_drvdata(idev, ar2);
+
+	idev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) | BIT_MASK(EV_REL);
+	idev->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) |
+		BIT_MASK(BTN_RIGHT);
+	idev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
+
+	for (mode = 0; mode < ATI_REMOTE2_MODES; mode++) {
+		for (index = 0; index < ARRAY_SIZE(ati_remote2_key_table); index++) {
+			ar2->keycode[mode][index] = ati_remote2_key_table[index].keycode;
+			__set_bit(ar2->keycode[mode][index], idev->keybit);
+		}
+	}
+
+	/* AUX1-AUX4 and PC generate the same scancode. */
+	index = ati_remote2_lookup(0x3f);
+	ar2->keycode[ATI_REMOTE2_AUX1][index] = KEY_PROG1;
+	ar2->keycode[ATI_REMOTE2_AUX2][index] = KEY_PROG2;
+	ar2->keycode[ATI_REMOTE2_AUX3][index] = KEY_PROG3;
+	ar2->keycode[ATI_REMOTE2_AUX4][index] = KEY_PROG4;
+	ar2->keycode[ATI_REMOTE2_PC][index] = KEY_PC;
+	__set_bit(KEY_PROG1, idev->keybit);
+	__set_bit(KEY_PROG2, idev->keybit);
+	__set_bit(KEY_PROG3, idev->keybit);
+	__set_bit(KEY_PROG4, idev->keybit);
+	__set_bit(KEY_PC, idev->keybit);
+
+	idev->rep[REP_DELAY]  = 250;
+	idev->rep[REP_PERIOD] = 33;
+
+	idev->open = ati_remote2_open;
+	idev->close = ati_remote2_close;
+
+	idev->getkeycode = ati_remote2_getkeycode;
+	idev->setkeycode = ati_remote2_setkeycode;
+
+	idev->name = ar2->name;
+	idev->phys = ar2->phys;
+
+	usb_to_input_id(ar2->udev, &idev->id);
+	idev->dev.parent = &ar2->udev->dev;
+
+	retval = input_register_device(idev);
+	if (retval)
+		input_free_device(idev);
+
+	return retval;
+}
+
+static int ati_remote2_urb_init(struct ati_remote2 *ar2)
+{
+	struct usb_device *udev = ar2->udev;
+	int i, pipe, maxp;
+
+	for (i = 0; i < 2; i++) {
+		ar2->buf[i] = usb_alloc_coherent(udev, 4, GFP_KERNEL, &ar2->buf_dma[i]);
+		if (!ar2->buf[i])
+			return -ENOMEM;
+
+		ar2->urb[i] = usb_alloc_urb(0, GFP_KERNEL);
+		if (!ar2->urb[i])
+			return -ENOMEM;
+
+		pipe = usb_rcvintpipe(udev, ar2->ep[i]->bEndpointAddress);
+		maxp = usb_maxpacket(udev, pipe);
+		maxp = maxp > 4 ? 4 : maxp;
+
+		usb_fill_int_urb(ar2->urb[i], udev, pipe, ar2->buf[i], maxp,
+				 i ? ati_remote2_complete_key : ati_remote2_complete_mouse,
+				 ar2, ar2->ep[i]->bInterval);
+		ar2->urb[i]->transfer_dma = ar2->buf_dma[i];
+		ar2->urb[i]->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+	}
+
+	return 0;
+}
+
+static void ati_remote2_urb_cleanup(struct ati_remote2 *ar2)
+{
+	int i;
+
+	for (i = 0; i < 2; i++) {
+		usb_free_urb(ar2->urb[i]);
+		usb_free_coherent(ar2->udev, 4, ar2->buf[i], ar2->buf_dma[i]);
+	}
+}
+
+static int ati_remote2_setup(struct ati_remote2 *ar2, unsigned int ch_mask)
+{
+	int r, i, channel;
+
+	/*
+	 * Configure receiver to only accept input from remote "channel"
+	 *  channel == 0  -> Accept input from any remote channel
+	 *  channel == 1  -> Only accept input from remote channel 1
+	 *  channel == 2  -> Only accept input from remote channel 2
+	 *  ...
+	 *  channel == 16 -> Only accept input from remote channel 16
+	 */
+
+	channel = 0;
+	for (i = 0; i < 16; i++) {
+		if ((1 << i) & ch_mask) {
+			if (!(~(1 << i) & ch_mask))
+				channel = i + 1;
+			break;
+		}
+	}
+
+	r = usb_control_msg(ar2->udev, usb_sndctrlpipe(ar2->udev, 0),
+			    0x20,
+			    USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_INTERFACE,
+			    channel, 0x0, NULL, 0, USB_CTRL_SET_TIMEOUT);
+	if (r) {
+		dev_err(&ar2->udev->dev, "%s - failed to set channel due to error: %d\n",
+			__func__, r);
+		return r;
+	}
+
+	return 0;
+}
+
+static ssize_t ati_remote2_show_channel_mask(struct device *dev,
+					     struct device_attribute *attr,
+					     char *buf)
+{
+	struct usb_device *udev = to_usb_device(dev);
+	struct usb_interface *intf = usb_ifnum_to_if(udev, 0);
+	struct ati_remote2 *ar2 = usb_get_intfdata(intf);
+
+	return sprintf(buf, "0x%04x\n", ar2->channel_mask);
+}
+
+static ssize_t ati_remote2_store_channel_mask(struct device *dev,
+					      struct device_attribute *attr,
+					      const char *buf, size_t count)
+{
+	struct usb_device *udev = to_usb_device(dev);
+	struct usb_interface *intf = usb_ifnum_to_if(udev, 0);
+	struct ati_remote2 *ar2 = usb_get_intfdata(intf);
+	unsigned int mask;
+	int r;
+
+	r = kstrtouint(buf, 0, &mask);
+	if (r)
+		return r;
+
+	if (mask & ~ATI_REMOTE2_MAX_CHANNEL_MASK)
+		return -EINVAL;
+
+	r = usb_autopm_get_interface(ar2->intf[0]);
+	if (r) {
+		dev_err(&ar2->intf[0]->dev,
+			"%s(): usb_autopm_get_interface() = %d\n", __func__, r);
+		return r;
+	}
+
+	mutex_lock(&ati_remote2_mutex);
+
+	if (mask != ar2->channel_mask) {
+		r = ati_remote2_setup(ar2, mask);
+		if (!r)
+			ar2->channel_mask = mask;
+	}
+
+	mutex_unlock(&ati_remote2_mutex);
+
+	usb_autopm_put_interface(ar2->intf[0]);
+
+	return r ? r : count;
+}
+
+static ssize_t ati_remote2_show_mode_mask(struct device *dev,
+					  struct device_attribute *attr,
+					  char *buf)
+{
+	struct usb_device *udev = to_usb_device(dev);
+	struct usb_interface *intf = usb_ifnum_to_if(udev, 0);
+	struct ati_remote2 *ar2 = usb_get_intfdata(intf);
+
+	return sprintf(buf, "0x%02x\n", ar2->mode_mask);
+}
+
+static ssize_t ati_remote2_store_mode_mask(struct device *dev,
+					   struct device_attribute *attr,
+					   const char *buf, size_t count)
+{
+	struct usb_device *udev = to_usb_device(dev);
+	struct usb_interface *intf = usb_ifnum_to_if(udev, 0);
+	struct ati_remote2 *ar2 = usb_get_intfdata(intf);
+	unsigned int mask;
+	int err;
+
+	err = kstrtouint(buf, 0, &mask);
+	if (err)
+		return err;
+
+	if (mask & ~ATI_REMOTE2_MAX_MODE_MASK)
+		return -EINVAL;
+
+	ar2->mode_mask = mask;
+
+	return count;
+}
+
+static DEVICE_ATTR(channel_mask, 0644, ati_remote2_show_channel_mask,
+		   ati_remote2_store_channel_mask);
+
+static DEVICE_ATTR(mode_mask, 0644, ati_remote2_show_mode_mask,
+		   ati_remote2_store_mode_mask);
+
+static struct attribute *ati_remote2_attrs[] = {
+	&dev_attr_channel_mask.attr,
+	&dev_attr_mode_mask.attr,
+	NULL,
+};
+
+static struct attribute_group ati_remote2_attr_group = {
+	.attrs = ati_remote2_attrs,
+};
+
+static int ati_remote2_probe(struct usb_interface *interface, const struct usb_device_id *id)
+{
+	struct usb_device *udev = interface_to_usbdev(interface);
+	struct usb_host_interface *alt = interface->cur_altsetting;
+	struct ati_remote2 *ar2;
+	int r;
+
+	if (alt->desc.bInterfaceNumber)
+		return -ENODEV;
+
+	ar2 = kzalloc(sizeof (struct ati_remote2), GFP_KERNEL);
+	if (!ar2)
+		return -ENOMEM;
+
+	ar2->udev = udev;
+
+	/* Sanity check, first interface must have an endpoint */
+	if (alt->desc.bNumEndpoints < 1 || !alt->endpoint) {
+		dev_err(&interface->dev,
+			"%s(): interface 0 must have an endpoint\n", __func__);
+		r = -ENODEV;
+		goto fail1;
+	}
+	ar2->intf[0] = interface;
+	ar2->ep[0] = &alt->endpoint[0].desc;
+
+	/* Sanity check, the device must have two interfaces */
+	ar2->intf[1] = usb_ifnum_to_if(udev, 1);
+	if ((udev->actconfig->desc.bNumInterfaces < 2) || !ar2->intf[1]) {
+		dev_err(&interface->dev, "%s(): need 2 interfaces, found %d\n",
+			__func__, udev->actconfig->desc.bNumInterfaces);
+		r = -ENODEV;
+		goto fail1;
+	}
+
+	r = usb_driver_claim_interface(&ati_remote2_driver, ar2->intf[1], ar2);
+	if (r)
+		goto fail1;
+
+	/* Sanity check, second interface must have an endpoint */
+	alt = ar2->intf[1]->cur_altsetting;
+	if (alt->desc.bNumEndpoints < 1 || !alt->endpoint) {
+		dev_err(&interface->dev,
+			"%s(): interface 1 must have an endpoint\n", __func__);
+		r = -ENODEV;
+		goto fail2;
+	}
+	ar2->ep[1] = &alt->endpoint[0].desc;
+
+	r = ati_remote2_urb_init(ar2);
+	if (r)
+		goto fail3;
+
+	ar2->channel_mask = channel_mask;
+	ar2->mode_mask = mode_mask;
+
+	r = ati_remote2_setup(ar2, ar2->channel_mask);
+	if (r)
+		goto fail3;
+
+	usb_make_path(udev, ar2->phys, sizeof(ar2->phys));
+	strlcat(ar2->phys, "/input0", sizeof(ar2->phys));
+
+	strlcat(ar2->name, "ATI Remote Wonder II", sizeof(ar2->name));
+
+	r = sysfs_create_group(&udev->dev.kobj, &ati_remote2_attr_group);
+	if (r)
+		goto fail3;
+
+	r = ati_remote2_input_init(ar2);
+	if (r)
+		goto fail4;
+
+	usb_set_intfdata(interface, ar2);
+
+	interface->needs_remote_wakeup = 1;
+
+	return 0;
+
+ fail4:
+	sysfs_remove_group(&udev->dev.kobj, &ati_remote2_attr_group);
+ fail3:
+	ati_remote2_urb_cleanup(ar2);
+ fail2:
+	usb_driver_release_interface(&ati_remote2_driver, ar2->intf[1]);
+ fail1:
+	kfree(ar2);
+
+	return r;
+}
+
+static void ati_remote2_disconnect(struct usb_interface *interface)
+{
+	struct ati_remote2 *ar2;
+	struct usb_host_interface *alt = interface->cur_altsetting;
+
+	if (alt->desc.bInterfaceNumber)
+		return;
+
+	ar2 = usb_get_intfdata(interface);
+	usb_set_intfdata(interface, NULL);
+
+	input_unregister_device(ar2->idev);
+
+	sysfs_remove_group(&ar2->udev->dev.kobj, &ati_remote2_attr_group);
+
+	ati_remote2_urb_cleanup(ar2);
+
+	usb_driver_release_interface(&ati_remote2_driver, ar2->intf[1]);
+
+	kfree(ar2);
+}
+
+static int ati_remote2_suspend(struct usb_interface *interface,
+			       pm_message_t message)
+{
+	struct ati_remote2 *ar2;
+	struct usb_host_interface *alt = interface->cur_altsetting;
+
+	if (alt->desc.bInterfaceNumber)
+		return 0;
+
+	ar2 = usb_get_intfdata(interface);
+
+	dev_dbg(&ar2->intf[0]->dev, "%s()\n", __func__);
+
+	mutex_lock(&ati_remote2_mutex);
+
+	if (ar2->flags & ATI_REMOTE2_OPENED)
+		ati_remote2_kill_urbs(ar2);
+
+	ar2->flags |= ATI_REMOTE2_SUSPENDED;
+
+	mutex_unlock(&ati_remote2_mutex);
+
+	return 0;
+}
+
+static int ati_remote2_resume(struct usb_interface *interface)
+{
+	struct ati_remote2 *ar2;
+	struct usb_host_interface *alt = interface->cur_altsetting;
+	int r = 0;
+
+	if (alt->desc.bInterfaceNumber)
+		return 0;
+
+	ar2 = usb_get_intfdata(interface);
+
+	dev_dbg(&ar2->intf[0]->dev, "%s()\n", __func__);
+
+	mutex_lock(&ati_remote2_mutex);
+
+	if (ar2->flags & ATI_REMOTE2_OPENED)
+		r = ati_remote2_submit_urbs(ar2);
+
+	if (!r)
+		ar2->flags &= ~ATI_REMOTE2_SUSPENDED;
+
+	mutex_unlock(&ati_remote2_mutex);
+
+	return r;
+}
+
+static int ati_remote2_reset_resume(struct usb_interface *interface)
+{
+	struct ati_remote2 *ar2;
+	struct usb_host_interface *alt = interface->cur_altsetting;
+	int r = 0;
+
+	if (alt->desc.bInterfaceNumber)
+		return 0;
+
+	ar2 = usb_get_intfdata(interface);
+
+	dev_dbg(&ar2->intf[0]->dev, "%s()\n", __func__);
+
+	mutex_lock(&ati_remote2_mutex);
+
+	r = ati_remote2_setup(ar2, ar2->channel_mask);
+	if (r)
+		goto out;
+
+	if (ar2->flags & ATI_REMOTE2_OPENED)
+		r = ati_remote2_submit_urbs(ar2);
+
+	if (!r)
+		ar2->flags &= ~ATI_REMOTE2_SUSPENDED;
+
+ out:
+	mutex_unlock(&ati_remote2_mutex);
+
+	return r;
+}
+
+static int ati_remote2_pre_reset(struct usb_interface *interface)
+{
+	struct ati_remote2 *ar2;
+	struct usb_host_interface *alt = interface->cur_altsetting;
+
+	if (alt->desc.bInterfaceNumber)
+		return 0;
+
+	ar2 = usb_get_intfdata(interface);
+
+	dev_dbg(&ar2->intf[0]->dev, "%s()\n", __func__);
+
+	mutex_lock(&ati_remote2_mutex);
+
+	if (ar2->flags == ATI_REMOTE2_OPENED)
+		ati_remote2_kill_urbs(ar2);
+
+	return 0;
+}
+
+static int ati_remote2_post_reset(struct usb_interface *interface)
+{
+	struct ati_remote2 *ar2;
+	struct usb_host_interface *alt = interface->cur_altsetting;
+	int r = 0;
+
+	if (alt->desc.bInterfaceNumber)
+		return 0;
+
+	ar2 = usb_get_intfdata(interface);
+
+	dev_dbg(&ar2->intf[0]->dev, "%s()\n", __func__);
+
+	if (ar2->flags == ATI_REMOTE2_OPENED)
+		r = ati_remote2_submit_urbs(ar2);
+
+	mutex_unlock(&ati_remote2_mutex);
+
+	return r;
+}
+
+module_usb_driver(ati_remote2_driver);
diff --git a/drivers/input/misc/atlas_btns.c b/drivers/input/misc/atlas_btns.c
new file mode 100644
index 000000000..0e77c40e1
--- /dev/null
+++ b/drivers/input/misc/atlas_btns.c
@@ -0,0 +1,144 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *  atlas_btns.c - Atlas Wallmount Touchscreen ACPI Extras
+ *
+ *  Copyright (C) 2006 Jaya Kumar
+ *  Based on Toshiba ACPI by John Belmonte and ASUS ACPI
+ *  This work was sponsored by CIS(M) Sdn Bhd.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/input.h>
+#include <linux/types.h>
+#include <linux/acpi.h>
+#include <linux/uaccess.h>
+
+#define ACPI_ATLAS_NAME		"Atlas ACPI"
+#define ACPI_ATLAS_CLASS	"Atlas"
+
+static unsigned short atlas_keymap[16];
+static struct input_dev *input_dev;
+
+/* button handling code */
+static acpi_status acpi_atlas_button_setup(acpi_handle region_handle,
+		    u32 function, void *handler_context, void **return_context)
+{
+	*return_context =
+		(function != ACPI_REGION_DEACTIVATE) ? handler_context : NULL;
+
+	return AE_OK;
+}
+
+static acpi_status acpi_atlas_button_handler(u32 function,
+		      acpi_physical_address address,
+		      u32 bit_width, u64 *value,
+		      void *handler_context, void *region_context)
+{
+	acpi_status status;
+
+	if (function == ACPI_WRITE) {
+		int code = address & 0x0f;
+		int key_down = !(address & 0x10);
+
+		input_event(input_dev, EV_MSC, MSC_SCAN, code);
+		input_report_key(input_dev, atlas_keymap[code], key_down);
+		input_sync(input_dev);
+
+		status = AE_OK;
+	} else {
+		pr_warn("shrugged on unexpected function: function=%x,address=%lx,value=%x\n",
+			function, (unsigned long)address, (u32)*value);
+		status = AE_BAD_PARAMETER;
+	}
+
+	return status;
+}
+
+static int atlas_acpi_button_add(struct acpi_device *device)
+{
+	acpi_status status;
+	int i;
+	int err;
+
+	input_dev = input_allocate_device();
+	if (!input_dev) {
+		pr_err("unable to allocate input device\n");
+		return -ENOMEM;
+	}
+
+	input_dev->name = "Atlas ACPI button driver";
+	input_dev->phys = "ASIM0000/atlas/input0";
+	input_dev->id.bustype = BUS_HOST;
+	input_dev->keycode = atlas_keymap;
+	input_dev->keycodesize = sizeof(unsigned short);
+	input_dev->keycodemax = ARRAY_SIZE(atlas_keymap);
+
+	input_set_capability(input_dev, EV_MSC, MSC_SCAN);
+	__set_bit(EV_KEY, input_dev->evbit);
+	for (i = 0; i < ARRAY_SIZE(atlas_keymap); i++) {
+		if (i < 9) {
+			atlas_keymap[i] = KEY_F1 + i;
+			__set_bit(KEY_F1 + i, input_dev->keybit);
+		} else
+			atlas_keymap[i] = KEY_RESERVED;
+	}
+
+	err = input_register_device(input_dev);
+	if (err) {
+		pr_err("couldn't register input device\n");
+		input_free_device(input_dev);
+		return err;
+	}
+
+	/* hookup button handler */
+	status = acpi_install_address_space_handler(device->handle,
+				0x81, &acpi_atlas_button_handler,
+				&acpi_atlas_button_setup, device);
+	if (ACPI_FAILURE(status)) {
+		pr_err("error installing addr spc handler\n");
+		input_unregister_device(input_dev);
+		err = -EINVAL;
+	}
+
+	return err;
+}
+
+static int atlas_acpi_button_remove(struct acpi_device *device)
+{
+	acpi_status status;
+
+	status = acpi_remove_address_space_handler(device->handle,
+				0x81, &acpi_atlas_button_handler);
+	if (ACPI_FAILURE(status))
+		pr_err("error removing addr spc handler\n");
+
+	input_unregister_device(input_dev);
+
+	return 0;
+}
+
+static const struct acpi_device_id atlas_device_ids[] = {
+	{"ASIM0000", 0},
+	{"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, atlas_device_ids);
+
+static struct acpi_driver atlas_acpi_driver = {
+	.name	= ACPI_ATLAS_NAME,
+	.class	= ACPI_ATLAS_CLASS,
+	.owner	= THIS_MODULE,
+	.ids	= atlas_device_ids,
+	.ops	= {
+		.add	= atlas_acpi_button_add,
+		.remove	= atlas_acpi_button_remove,
+	},
+};
+module_acpi_driver(atlas_acpi_driver);
+
+MODULE_AUTHOR("Jaya Kumar");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Atlas button driver");
+
diff --git a/drivers/input/misc/atmel_captouch.c b/drivers/input/misc/atmel_captouch.c
new file mode 100644
index 000000000..051aded68
--- /dev/null
+++ b/drivers/input/misc/atmel_captouch.c
@@ -0,0 +1,281 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Atmel Atmegaxx Capacitive Touch Button Driver
+ *
+ * Copyright (C) 2016 Google, inc.
+ */
+
+/*
+ * It's irrelevant that the HW used to develop captouch driver is based
+ * on Atmega88PA part and uses QtouchADC parts for sensing touch.
+ * Calling this driver "captouch" is an arbitrary way to distinguish
+ * the protocol this driver supported by other atmel/qtouch drivers.
+ *
+ * Captouch driver supports a newer/different version of the I2C
+ * registers/commands than the qt1070.c driver.
+ * Don't let the similarity of the general driver structure fool you.
+ *
+ * For raw i2c access from userspace, use i2cset/i2cget
+ * to poke at /dev/i2c-N devices.
+ */
+
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/i2c.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/slab.h>
+
+/* Maximum number of buttons supported */
+#define MAX_NUM_OF_BUTTONS		8
+
+/* Registers */
+#define REG_KEY1_THRESHOLD		0x02
+#define REG_KEY2_THRESHOLD		0x03
+#define REG_KEY3_THRESHOLD		0x04
+#define REG_KEY4_THRESHOLD		0x05
+
+#define REG_KEY1_REF_H			0x20
+#define REG_KEY1_REF_L			0x21
+#define REG_KEY2_REF_H			0x22
+#define REG_KEY2_REF_L			0x23
+#define REG_KEY3_REF_H			0x24
+#define REG_KEY3_REF_L			0x25
+#define REG_KEY4_REF_H			0x26
+#define REG_KEY4_REF_L			0x27
+
+#define REG_KEY1_DLT_H			0x30
+#define REG_KEY1_DLT_L			0x31
+#define REG_KEY2_DLT_H			0x32
+#define REG_KEY2_DLT_L			0x33
+#define REG_KEY3_DLT_H			0x34
+#define REG_KEY3_DLT_L			0x35
+#define REG_KEY4_DLT_H			0x36
+#define REG_KEY4_DLT_L			0x37
+
+#define REG_KEY_STATE			0x3C
+
+/*
+ * @i2c_client: I2C slave device client pointer
+ * @input: Input device pointer
+ * @num_btn: Number of buttons
+ * @keycodes: map of button# to KeyCode
+ * @prev_btn: Previous key state to detect button "press" or "release"
+ * @xfer_buf: I2C transfer buffer
+ */
+struct atmel_captouch_device {
+	struct i2c_client *client;
+	struct input_dev *input;
+	u32 num_btn;
+	u32 keycodes[MAX_NUM_OF_BUTTONS];
+	u8 prev_btn;
+	u8 xfer_buf[8] ____cacheline_aligned;
+};
+
+/*
+ * Read from I2C slave device
+ * The protocol is that the client has to provide both the register address
+ * and the length, and while reading back the device would prepend the data
+ * with address and length for verification.
+ */
+static int atmel_read(struct atmel_captouch_device *capdev,
+			 u8 reg, u8 *data, size_t len)
+{
+	struct i2c_client *client = capdev->client;
+	struct device *dev = &client->dev;
+	struct i2c_msg msg[2];
+	int err;
+
+	if (len > sizeof(capdev->xfer_buf) - 2)
+		return -EINVAL;
+
+	capdev->xfer_buf[0] = reg;
+	capdev->xfer_buf[1] = len;
+
+	msg[0].addr = client->addr;
+	msg[0].flags = 0;
+	msg[0].buf = capdev->xfer_buf;
+	msg[0].len = 2;
+
+	msg[1].addr = client->addr;
+	msg[1].flags = I2C_M_RD;
+	msg[1].buf = capdev->xfer_buf;
+	msg[1].len = len + 2;
+
+	err = i2c_transfer(client->adapter, msg, ARRAY_SIZE(msg));
+	if (err != ARRAY_SIZE(msg))
+		return err < 0 ? err : -EIO;
+
+	if (capdev->xfer_buf[0] != reg) {
+		dev_err(dev,
+			"I2C read error: register address does not match (%#02x vs %02x)\n",
+			capdev->xfer_buf[0], reg);
+		return -ECOMM;
+	}
+
+	memcpy(data, &capdev->xfer_buf[2], len);
+
+	return 0;
+}
+
+/*
+ * Handle interrupt and report the key changes to the input system.
+ * Multi-touch can be supported; however, it really depends on whether
+ * the device can multi-touch.
+ */
+static irqreturn_t atmel_captouch_isr(int irq, void *data)
+{
+	struct atmel_captouch_device *capdev = data;
+	struct device *dev = &capdev->client->dev;
+	int error;
+	int i;
+	u8 new_btn;
+	u8 changed_btn;
+
+	error = atmel_read(capdev, REG_KEY_STATE, &new_btn, 1);
+	if (error) {
+		dev_err(dev, "failed to read button state: %d\n", error);
+		goto out;
+	}
+
+	dev_dbg(dev, "%s: button state %#02x\n", __func__, new_btn);
+
+	changed_btn = new_btn ^ capdev->prev_btn;
+	capdev->prev_btn = new_btn;
+
+	for (i = 0; i < capdev->num_btn; i++) {
+		if (changed_btn & BIT(i))
+			input_report_key(capdev->input,
+					 capdev->keycodes[i],
+					 new_btn & BIT(i));
+	}
+
+	input_sync(capdev->input);
+
+out:
+	return IRQ_HANDLED;
+}
+
+/*
+ * Probe function to setup the device, input system and interrupt
+ */
+static int atmel_captouch_probe(struct i2c_client *client,
+		const struct i2c_device_id *id)
+{
+	struct atmel_captouch_device *capdev;
+	struct device *dev = &client->dev;
+	struct device_node *node;
+	int i;
+	int err;
+
+	if (!i2c_check_functionality(client->adapter,
+				     I2C_FUNC_SMBUS_BYTE_DATA |
+					I2C_FUNC_SMBUS_WORD_DATA |
+					I2C_FUNC_SMBUS_I2C_BLOCK)) {
+		dev_err(dev, "needed i2c functionality is not supported\n");
+		return -EINVAL;
+	}
+
+	capdev = devm_kzalloc(dev, sizeof(*capdev), GFP_KERNEL);
+	if (!capdev)
+		return -ENOMEM;
+
+	capdev->client = client;
+
+	err = atmel_read(capdev, REG_KEY_STATE,
+			    &capdev->prev_btn, sizeof(capdev->prev_btn));
+	if (err) {
+		dev_err(dev, "failed to read initial button state: %d\n", err);
+		return err;
+	}
+
+	capdev->input = devm_input_allocate_device(dev);
+	if (!capdev->input) {
+		dev_err(dev, "failed to allocate input device\n");
+		return -ENOMEM;
+	}
+
+	capdev->input->id.bustype = BUS_I2C;
+	capdev->input->id.product = 0x880A;
+	capdev->input->id.version = 0;
+	capdev->input->name = "ATMegaXX Capacitive Button Controller";
+	__set_bit(EV_KEY, capdev->input->evbit);
+
+	node = dev->of_node;
+	if (!node) {
+		dev_err(dev, "failed to find matching node in device tree\n");
+		return -EINVAL;
+	}
+
+	if (of_property_read_bool(node, "autorepeat"))
+		__set_bit(EV_REP, capdev->input->evbit);
+
+	capdev->num_btn = of_property_count_u32_elems(node, "linux,keymap");
+	if (capdev->num_btn > MAX_NUM_OF_BUTTONS)
+		capdev->num_btn = MAX_NUM_OF_BUTTONS;
+
+	err = of_property_read_u32_array(node, "linux,keycodes",
+					 capdev->keycodes,
+					 capdev->num_btn);
+	if (err) {
+		dev_err(dev,
+			"failed to read linux,keycode property: %d\n", err);
+		return err;
+	}
+
+	for (i = 0; i < capdev->num_btn; i++)
+		__set_bit(capdev->keycodes[i], capdev->input->keybit);
+
+	capdev->input->keycode = capdev->keycodes;
+	capdev->input->keycodesize = sizeof(capdev->keycodes[0]);
+	capdev->input->keycodemax = capdev->num_btn;
+
+	err = input_register_device(capdev->input);
+	if (err)
+		return err;
+
+	err = devm_request_threaded_irq(dev, client->irq,
+					NULL, atmel_captouch_isr,
+					IRQF_ONESHOT,
+					"atmel_captouch", capdev);
+	if (err) {
+		dev_err(dev, "failed to request irq %d: %d\n",
+			client->irq, err);
+		return err;
+	}
+
+	return 0;
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id atmel_captouch_of_id[] = {
+	{
+		.compatible = "atmel,captouch",
+	},
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, atmel_captouch_of_id);
+#endif
+
+static const struct i2c_device_id atmel_captouch_id[] = {
+	{ "atmel_captouch", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, atmel_captouch_id);
+
+static struct i2c_driver atmel_captouch_driver = {
+	.probe		= atmel_captouch_probe,
+	.id_table	= atmel_captouch_id,
+	.driver		= {
+		.name	= "atmel_captouch",
+		.of_match_table = of_match_ptr(atmel_captouch_of_id),
+	},
+};
+module_i2c_driver(atmel_captouch_driver);
+
+/* Module information */
+MODULE_AUTHOR("Hung-yu Wu <hywu@google.com>");
+MODULE_DESCRIPTION("Atmel ATmegaXX Capacitance Touch Sensor I2C Driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/input/misc/axp20x-pek.c b/drivers/input/misc/axp20x-pek.c
new file mode 100644
index 000000000..04da7916e
--- /dev/null
+++ b/drivers/input/misc/axp20x-pek.c
@@ -0,0 +1,424 @@
+/*
+ * axp20x power button driver.
+ *
+ * Copyright (C) 2013 Carlo Caione <carlo@caione.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License. See the file "COPYING" in the main directory of this
+ * archive for more details.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/acpi.h>
+#include <linux/errno.h>
+#include <linux/irq.h>
+#include <linux/init.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/mfd/axp20x.h>
+#include <linux/module.h>
+#include <linux/platform_data/x86/soc.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+
+#define AXP20X_PEK_STARTUP_MASK		(0xc0)
+#define AXP20X_PEK_SHUTDOWN_MASK	(0x03)
+
+struct axp20x_info {
+	const struct axp20x_time *startup_time;
+	unsigned int startup_mask;
+	const struct axp20x_time *shutdown_time;
+	unsigned int shutdown_mask;
+};
+
+struct axp20x_pek {
+	struct axp20x_dev *axp20x;
+	struct input_dev *input;
+	struct axp20x_info *info;
+	int irq_dbr;
+	int irq_dbf;
+};
+
+struct axp20x_time {
+	unsigned int time;
+	unsigned int idx;
+};
+
+static const struct axp20x_time startup_time[] = {
+	{ .time = 128,  .idx = 0 },
+	{ .time = 1000, .idx = 2 },
+	{ .time = 3000, .idx = 1 },
+	{ .time = 2000, .idx = 3 },
+};
+
+static const struct axp20x_time axp221_startup_time[] = {
+	{ .time = 128,  .idx = 0 },
+	{ .time = 1000, .idx = 1 },
+	{ .time = 2000, .idx = 2 },
+	{ .time = 3000, .idx = 3 },
+};
+
+static const struct axp20x_time shutdown_time[] = {
+	{ .time = 4000,  .idx = 0 },
+	{ .time = 6000,  .idx = 1 },
+	{ .time = 8000,  .idx = 2 },
+	{ .time = 10000, .idx = 3 },
+};
+
+static const struct axp20x_info axp20x_info = {
+	.startup_time = startup_time,
+	.startup_mask = AXP20X_PEK_STARTUP_MASK,
+	.shutdown_time = shutdown_time,
+	.shutdown_mask = AXP20X_PEK_SHUTDOWN_MASK,
+};
+
+static const struct axp20x_info axp221_info = {
+	.startup_time = axp221_startup_time,
+	.startup_mask = AXP20X_PEK_STARTUP_MASK,
+	.shutdown_time = shutdown_time,
+	.shutdown_mask = AXP20X_PEK_SHUTDOWN_MASK,
+};
+
+static ssize_t axp20x_show_attr(struct device *dev,
+				const struct axp20x_time *time,
+				unsigned int mask, char *buf)
+{
+	struct axp20x_pek *axp20x_pek = dev_get_drvdata(dev);
+	unsigned int val;
+	int ret, i;
+
+	ret = regmap_read(axp20x_pek->axp20x->regmap, AXP20X_PEK_KEY, &val);
+	if (ret != 0)
+		return ret;
+
+	val &= mask;
+	val >>= ffs(mask) - 1;
+
+	for (i = 0; i < 4; i++)
+		if (val == time[i].idx)
+			val = time[i].time;
+
+	return sprintf(buf, "%u\n", val);
+}
+
+static ssize_t axp20x_show_attr_startup(struct device *dev,
+					struct device_attribute *attr,
+					char *buf)
+{
+	struct axp20x_pek *axp20x_pek = dev_get_drvdata(dev);
+
+	return axp20x_show_attr(dev, axp20x_pek->info->startup_time,
+				axp20x_pek->info->startup_mask, buf);
+}
+
+static ssize_t axp20x_show_attr_shutdown(struct device *dev,
+					 struct device_attribute *attr,
+					 char *buf)
+{
+	struct axp20x_pek *axp20x_pek = dev_get_drvdata(dev);
+
+	return axp20x_show_attr(dev, axp20x_pek->info->shutdown_time,
+				axp20x_pek->info->shutdown_mask, buf);
+}
+
+static ssize_t axp20x_store_attr(struct device *dev,
+				 const struct axp20x_time *time,
+				 unsigned int mask, const char *buf,
+				 size_t count)
+{
+	struct axp20x_pek *axp20x_pek = dev_get_drvdata(dev);
+	char val_str[20];
+	size_t len;
+	int ret, i;
+	unsigned int val, idx = 0;
+	unsigned int best_err = UINT_MAX;
+
+	val_str[sizeof(val_str) - 1] = '\0';
+	strncpy(val_str, buf, sizeof(val_str) - 1);
+	len = strlen(val_str);
+
+	if (len && val_str[len - 1] == '\n')
+		val_str[len - 1] = '\0';
+
+	ret = kstrtouint(val_str, 10, &val);
+	if (ret)
+		return ret;
+
+	for (i = 3; i >= 0; i--) {
+		unsigned int err;
+
+		err = abs(time[i].time - val);
+		if (err < best_err) {
+			best_err = err;
+			idx = time[i].idx;
+		}
+
+		if (!err)
+			break;
+	}
+
+	idx <<= ffs(mask) - 1;
+	ret = regmap_update_bits(axp20x_pek->axp20x->regmap, AXP20X_PEK_KEY,
+				 mask, idx);
+	if (ret != 0)
+		return -EINVAL;
+
+	return count;
+}
+
+static ssize_t axp20x_store_attr_startup(struct device *dev,
+					 struct device_attribute *attr,
+					 const char *buf, size_t count)
+{
+	struct axp20x_pek *axp20x_pek = dev_get_drvdata(dev);
+
+	return axp20x_store_attr(dev, axp20x_pek->info->startup_time,
+				 axp20x_pek->info->startup_mask, buf, count);
+}
+
+static ssize_t axp20x_store_attr_shutdown(struct device *dev,
+					  struct device_attribute *attr,
+					  const char *buf, size_t count)
+{
+	struct axp20x_pek *axp20x_pek = dev_get_drvdata(dev);
+
+	return axp20x_store_attr(dev, axp20x_pek->info->shutdown_time,
+				 axp20x_pek->info->shutdown_mask, buf, count);
+}
+
+static DEVICE_ATTR(startup, 0644, axp20x_show_attr_startup,
+		   axp20x_store_attr_startup);
+static DEVICE_ATTR(shutdown, 0644, axp20x_show_attr_shutdown,
+		   axp20x_store_attr_shutdown);
+
+static struct attribute *axp20x_attrs[] = {
+	&dev_attr_startup.attr,
+	&dev_attr_shutdown.attr,
+	NULL,
+};
+ATTRIBUTE_GROUPS(axp20x);
+
+static irqreturn_t axp20x_pek_irq(int irq, void *pwr)
+{
+	struct input_dev *idev = pwr;
+	struct axp20x_pek *axp20x_pek = input_get_drvdata(idev);
+
+	/*
+	 * The power-button is connected to ground so a falling edge (dbf)
+	 * means it is pressed.
+	 */
+	if (irq == axp20x_pek->irq_dbf)
+		input_report_key(idev, KEY_POWER, true);
+	else if (irq == axp20x_pek->irq_dbr)
+		input_report_key(idev, KEY_POWER, false);
+
+	input_sync(idev);
+
+	return IRQ_HANDLED;
+}
+
+static int axp20x_pek_probe_input_device(struct axp20x_pek *axp20x_pek,
+					 struct platform_device *pdev)
+{
+	struct axp20x_dev *axp20x = axp20x_pek->axp20x;
+	struct input_dev *idev;
+	int error;
+
+	axp20x_pek->irq_dbr = platform_get_irq_byname(pdev, "PEK_DBR");
+	if (axp20x_pek->irq_dbr < 0)
+		return axp20x_pek->irq_dbr;
+	axp20x_pek->irq_dbr = regmap_irq_get_virq(axp20x->regmap_irqc,
+						  axp20x_pek->irq_dbr);
+
+	axp20x_pek->irq_dbf = platform_get_irq_byname(pdev, "PEK_DBF");
+	if (axp20x_pek->irq_dbf < 0)
+		return axp20x_pek->irq_dbf;
+	axp20x_pek->irq_dbf = regmap_irq_get_virq(axp20x->regmap_irqc,
+						  axp20x_pek->irq_dbf);
+
+	axp20x_pek->input = devm_input_allocate_device(&pdev->dev);
+	if (!axp20x_pek->input)
+		return -ENOMEM;
+
+	idev = axp20x_pek->input;
+
+	idev->name = "axp20x-pek";
+	idev->phys = "m1kbd/input2";
+	idev->dev.parent = &pdev->dev;
+
+	input_set_capability(idev, EV_KEY, KEY_POWER);
+
+	input_set_drvdata(idev, axp20x_pek);
+
+	error = devm_request_any_context_irq(&pdev->dev, axp20x_pek->irq_dbr,
+					     axp20x_pek_irq, 0,
+					     "axp20x-pek-dbr", idev);
+	if (error < 0) {
+		dev_err(&pdev->dev, "Failed to request dbr IRQ#%d: %d\n",
+			axp20x_pek->irq_dbr, error);
+		return error;
+	}
+
+	error = devm_request_any_context_irq(&pdev->dev, axp20x_pek->irq_dbf,
+					  axp20x_pek_irq, 0,
+					  "axp20x-pek-dbf", idev);
+	if (error < 0) {
+		dev_err(&pdev->dev, "Failed to request dbf IRQ#%d: %d\n",
+			axp20x_pek->irq_dbf, error);
+		return error;
+	}
+
+	error = input_register_device(idev);
+	if (error) {
+		dev_err(&pdev->dev, "Can't register input device: %d\n",
+			error);
+		return error;
+	}
+
+	device_init_wakeup(&pdev->dev, true);
+
+	return 0;
+}
+
+static bool axp20x_pek_should_register_input(struct axp20x_pek *axp20x_pek)
+{
+	if (IS_ENABLED(CONFIG_INPUT_SOC_BUTTON_ARRAY) &&
+	    axp20x_pek->axp20x->variant == AXP288_ID) {
+		/*
+		 * On Cherry Trail platforms (hrv == 3), do not register the
+		 * input device if there is an "INTCFD9" or "ACPI0011" gpio
+		 * button ACPI device, as that handles the power button too,
+		 * and otherwise we end up reporting all presses twice.
+		 */
+		if (soc_intel_is_cht() &&
+				(acpi_dev_present("INTCFD9", NULL, -1) ||
+				 acpi_dev_present("ACPI0011", NULL, -1)))
+			return false;
+	}
+
+	return true;
+}
+
+static int axp20x_pek_probe(struct platform_device *pdev)
+{
+	struct axp20x_pek *axp20x_pek;
+	const struct platform_device_id *match = platform_get_device_id(pdev);
+	int error;
+
+	if (!match) {
+		dev_err(&pdev->dev, "Failed to get platform_device_id\n");
+		return -EINVAL;
+	}
+
+	axp20x_pek = devm_kzalloc(&pdev->dev, sizeof(struct axp20x_pek),
+				  GFP_KERNEL);
+	if (!axp20x_pek)
+		return -ENOMEM;
+
+	axp20x_pek->axp20x = dev_get_drvdata(pdev->dev.parent);
+
+	if (axp20x_pek_should_register_input(axp20x_pek)) {
+		error = axp20x_pek_probe_input_device(axp20x_pek, pdev);
+		if (error)
+			return error;
+	}
+
+	axp20x_pek->info = (struct axp20x_info *)match->driver_data;
+
+	platform_set_drvdata(pdev, axp20x_pek);
+
+	return 0;
+}
+
+static int __maybe_unused axp20x_pek_suspend(struct device *dev)
+{
+	struct axp20x_pek *axp20x_pek = dev_get_drvdata(dev);
+
+	/*
+	 * As nested threaded IRQs are not automatically disabled during
+	 * suspend, we must explicitly disable non-wakeup IRQs.
+	 */
+	if (device_may_wakeup(dev)) {
+		enable_irq_wake(axp20x_pek->irq_dbf);
+		enable_irq_wake(axp20x_pek->irq_dbr);
+	} else {
+		disable_irq(axp20x_pek->irq_dbf);
+		disable_irq(axp20x_pek->irq_dbr);
+	}
+
+	return 0;
+}
+
+static int __maybe_unused axp20x_pek_resume(struct device *dev)
+{
+	struct axp20x_pek *axp20x_pek = dev_get_drvdata(dev);
+
+	if (device_may_wakeup(dev)) {
+		disable_irq_wake(axp20x_pek->irq_dbf);
+		disable_irq_wake(axp20x_pek->irq_dbr);
+	} else {
+		enable_irq(axp20x_pek->irq_dbf);
+		enable_irq(axp20x_pek->irq_dbr);
+	}
+
+	return 0;
+}
+
+static int __maybe_unused axp20x_pek_resume_noirq(struct device *dev)
+{
+	struct axp20x_pek *axp20x_pek = dev_get_drvdata(dev);
+
+	if (axp20x_pek->axp20x->variant != AXP288_ID)
+		return 0;
+
+	/*
+	 * Clear interrupts from button presses during suspend, to avoid
+	 * a wakeup power-button press getting reported to userspace.
+	 */
+	regmap_write(axp20x_pek->axp20x->regmap,
+		     AXP20X_IRQ1_STATE + AXP288_IRQ_POKN / 8,
+		     BIT(AXP288_IRQ_POKN % 8));
+
+	return 0;
+}
+
+static const struct dev_pm_ops axp20x_pek_pm_ops = {
+	SET_SYSTEM_SLEEP_PM_OPS(axp20x_pek_suspend, axp20x_pek_resume)
+#ifdef CONFIG_PM_SLEEP
+	.resume_noirq = axp20x_pek_resume_noirq,
+#endif
+};
+
+static const struct platform_device_id axp_pek_id_match[] = {
+	{
+		.name = "axp20x-pek",
+		.driver_data = (kernel_ulong_t)&axp20x_info,
+	},
+	{
+		.name = "axp221-pek",
+		.driver_data = (kernel_ulong_t)&axp221_info,
+	},
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(platform, axp_pek_id_match);
+
+static struct platform_driver axp20x_pek_driver = {
+	.probe		= axp20x_pek_probe,
+	.id_table	= axp_pek_id_match,
+	.driver		= {
+		.name		= "axp20x-pek",
+		.pm		= &axp20x_pek_pm_ops,
+		.dev_groups	= axp20x_groups,
+	},
+};
+module_platform_driver(axp20x_pek_driver);
+
+MODULE_DESCRIPTION("axp20x Power Button");
+MODULE_AUTHOR("Carlo Caione <carlo@caione.org>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/misc/bma150.c b/drivers/input/misc/bma150.c
new file mode 100644
index 000000000..84fe394da
--- /dev/null
+++ b/drivers/input/misc/bma150.c
@@ -0,0 +1,563 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2011 Bosch Sensortec GmbH
+ * Copyright (c) 2011 Unixphere
+ *
+ * This driver adds support for Bosch Sensortec's digital acceleration
+ * sensors BMA150 and SMB380.
+ * The SMB380 is fully compatible with BMA150 and only differs in packaging.
+ *
+ * The datasheet for the BMA150 chip can be found here:
+ * http://www.bosch-sensortec.com/content/language1/downloads/BST-BMA150-DS000-07.pdf
+ */
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/i2c.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/pm.h>
+#include <linux/pm_runtime.h>
+#include <linux/bma150.h>
+
+#define ABSMAX_ACC_VAL		0x01FF
+#define ABSMIN_ACC_VAL		-(ABSMAX_ACC_VAL)
+
+/* Each axis is represented by a 2-byte data word */
+#define BMA150_XYZ_DATA_SIZE	6
+
+/* Input poll interval in milliseconds */
+#define BMA150_POLL_INTERVAL	10
+#define BMA150_POLL_MAX		200
+#define BMA150_POLL_MIN		0
+
+#define BMA150_MODE_NORMAL	0
+#define BMA150_MODE_SLEEP	2
+#define BMA150_MODE_WAKE_UP	3
+
+/* Data register addresses */
+#define BMA150_DATA_0_REG	0x00
+#define BMA150_DATA_1_REG	0x01
+#define BMA150_DATA_2_REG	0x02
+
+/* Control register addresses */
+#define BMA150_CTRL_0_REG	0x0A
+#define BMA150_CTRL_1_REG	0x0B
+#define BMA150_CTRL_2_REG	0x14
+#define BMA150_CTRL_3_REG	0x15
+
+/* Configuration/Setting register addresses */
+#define BMA150_CFG_0_REG	0x0C
+#define BMA150_CFG_1_REG	0x0D
+#define BMA150_CFG_2_REG	0x0E
+#define BMA150_CFG_3_REG	0x0F
+#define BMA150_CFG_4_REG	0x10
+#define BMA150_CFG_5_REG	0x11
+
+#define BMA150_CHIP_ID		2
+#define BMA150_CHIP_ID_REG	BMA150_DATA_0_REG
+
+#define BMA150_ACC_X_LSB_REG	BMA150_DATA_2_REG
+
+#define BMA150_SLEEP_POS	0
+#define BMA150_SLEEP_MSK	0x01
+#define BMA150_SLEEP_REG	BMA150_CTRL_0_REG
+
+#define BMA150_BANDWIDTH_POS	0
+#define BMA150_BANDWIDTH_MSK	0x07
+#define BMA150_BANDWIDTH_REG	BMA150_CTRL_2_REG
+
+#define BMA150_RANGE_POS	3
+#define BMA150_RANGE_MSK	0x18
+#define BMA150_RANGE_REG	BMA150_CTRL_2_REG
+
+#define BMA150_WAKE_UP_POS	0
+#define BMA150_WAKE_UP_MSK	0x01
+#define BMA150_WAKE_UP_REG	BMA150_CTRL_3_REG
+
+#define BMA150_SW_RES_POS	1
+#define BMA150_SW_RES_MSK	0x02
+#define BMA150_SW_RES_REG	BMA150_CTRL_0_REG
+
+/* Any-motion interrupt register fields */
+#define BMA150_ANY_MOTION_EN_POS	6
+#define BMA150_ANY_MOTION_EN_MSK	0x40
+#define BMA150_ANY_MOTION_EN_REG	BMA150_CTRL_1_REG
+
+#define BMA150_ANY_MOTION_DUR_POS	6
+#define BMA150_ANY_MOTION_DUR_MSK	0xC0
+#define BMA150_ANY_MOTION_DUR_REG	BMA150_CFG_5_REG
+
+#define BMA150_ANY_MOTION_THRES_REG	BMA150_CFG_4_REG
+
+/* Advanced interrupt register fields */
+#define BMA150_ADV_INT_EN_POS		6
+#define BMA150_ADV_INT_EN_MSK		0x40
+#define BMA150_ADV_INT_EN_REG		BMA150_CTRL_3_REG
+
+/* High-G interrupt register fields */
+#define BMA150_HIGH_G_EN_POS		1
+#define BMA150_HIGH_G_EN_MSK		0x02
+#define BMA150_HIGH_G_EN_REG		BMA150_CTRL_1_REG
+
+#define BMA150_HIGH_G_HYST_POS		3
+#define BMA150_HIGH_G_HYST_MSK		0x38
+#define BMA150_HIGH_G_HYST_REG		BMA150_CFG_5_REG
+
+#define BMA150_HIGH_G_DUR_REG		BMA150_CFG_3_REG
+#define BMA150_HIGH_G_THRES_REG		BMA150_CFG_2_REG
+
+/* Low-G interrupt register fields */
+#define BMA150_LOW_G_EN_POS		0
+#define BMA150_LOW_G_EN_MSK		0x01
+#define BMA150_LOW_G_EN_REG		BMA150_CTRL_1_REG
+
+#define BMA150_LOW_G_HYST_POS		0
+#define BMA150_LOW_G_HYST_MSK		0x07
+#define BMA150_LOW_G_HYST_REG		BMA150_CFG_5_REG
+
+#define BMA150_LOW_G_DUR_REG		BMA150_CFG_1_REG
+#define BMA150_LOW_G_THRES_REG		BMA150_CFG_0_REG
+
+struct bma150_data {
+	struct i2c_client *client;
+	struct input_dev *input;
+	u8 mode;
+};
+
+/*
+ * The settings for the given range, bandwidth and interrupt features
+ * are stated and verified by Bosch Sensortec where they are configured
+ * to provide a generic sensitivity performance.
+ */
+static const struct bma150_cfg default_cfg = {
+	.any_motion_int = 1,
+	.hg_int = 1,
+	.lg_int = 1,
+	.any_motion_dur = 0,
+	.any_motion_thres = 0,
+	.hg_hyst = 0,
+	.hg_dur = 150,
+	.hg_thres = 160,
+	.lg_hyst = 0,
+	.lg_dur = 150,
+	.lg_thres = 20,
+	.range = BMA150_RANGE_2G,
+	.bandwidth = BMA150_BW_50HZ
+};
+
+static int bma150_write_byte(struct i2c_client *client, u8 reg, u8 val)
+{
+	s32 ret;
+
+	/* As per specification, disable irq in between register writes */
+	if (client->irq)
+		disable_irq_nosync(client->irq);
+
+	ret = i2c_smbus_write_byte_data(client, reg, val);
+
+	if (client->irq)
+		enable_irq(client->irq);
+
+	return ret;
+}
+
+static int bma150_set_reg_bits(struct i2c_client *client,
+					int val, int shift, u8 mask, u8 reg)
+{
+	int data;
+
+	data = i2c_smbus_read_byte_data(client, reg);
+	if (data < 0)
+		return data;
+
+	data = (data & ~mask) | ((val << shift) & mask);
+	return bma150_write_byte(client, reg, data);
+}
+
+static int bma150_set_mode(struct bma150_data *bma150, u8 mode)
+{
+	int error;
+
+	error = bma150_set_reg_bits(bma150->client, mode, BMA150_WAKE_UP_POS,
+				BMA150_WAKE_UP_MSK, BMA150_WAKE_UP_REG);
+	if (error)
+		return error;
+
+	error = bma150_set_reg_bits(bma150->client, mode, BMA150_SLEEP_POS,
+				BMA150_SLEEP_MSK, BMA150_SLEEP_REG);
+	if (error)
+		return error;
+
+	if (mode == BMA150_MODE_NORMAL)
+		usleep_range(2000, 2100);
+
+	bma150->mode = mode;
+	return 0;
+}
+
+static int bma150_soft_reset(struct bma150_data *bma150)
+{
+	int error;
+
+	error = bma150_set_reg_bits(bma150->client, 1, BMA150_SW_RES_POS,
+				BMA150_SW_RES_MSK, BMA150_SW_RES_REG);
+	if (error)
+		return error;
+
+	usleep_range(2000, 2100);
+	return 0;
+}
+
+static int bma150_set_range(struct bma150_data *bma150, u8 range)
+{
+	return bma150_set_reg_bits(bma150->client, range, BMA150_RANGE_POS,
+				BMA150_RANGE_MSK, BMA150_RANGE_REG);
+}
+
+static int bma150_set_bandwidth(struct bma150_data *bma150, u8 bw)
+{
+	return bma150_set_reg_bits(bma150->client, bw, BMA150_BANDWIDTH_POS,
+				BMA150_BANDWIDTH_MSK, BMA150_BANDWIDTH_REG);
+}
+
+static int bma150_set_low_g_interrupt(struct bma150_data *bma150,
+					u8 enable, u8 hyst, u8 dur, u8 thres)
+{
+	int error;
+
+	error = bma150_set_reg_bits(bma150->client, hyst,
+				BMA150_LOW_G_HYST_POS, BMA150_LOW_G_HYST_MSK,
+				BMA150_LOW_G_HYST_REG);
+	if (error)
+		return error;
+
+	error = bma150_write_byte(bma150->client, BMA150_LOW_G_DUR_REG, dur);
+	if (error)
+		return error;
+
+	error = bma150_write_byte(bma150->client, BMA150_LOW_G_THRES_REG, thres);
+	if (error)
+		return error;
+
+	return bma150_set_reg_bits(bma150->client, !!enable,
+				BMA150_LOW_G_EN_POS, BMA150_LOW_G_EN_MSK,
+				BMA150_LOW_G_EN_REG);
+}
+
+static int bma150_set_high_g_interrupt(struct bma150_data *bma150,
+					u8 enable, u8 hyst, u8 dur, u8 thres)
+{
+	int error;
+
+	error = bma150_set_reg_bits(bma150->client, hyst,
+				BMA150_HIGH_G_HYST_POS, BMA150_HIGH_G_HYST_MSK,
+				BMA150_HIGH_G_HYST_REG);
+	if (error)
+		return error;
+
+	error = bma150_write_byte(bma150->client,
+				BMA150_HIGH_G_DUR_REG, dur);
+	if (error)
+		return error;
+
+	error = bma150_write_byte(bma150->client,
+				BMA150_HIGH_G_THRES_REG, thres);
+	if (error)
+		return error;
+
+	return bma150_set_reg_bits(bma150->client, !!enable,
+				BMA150_HIGH_G_EN_POS, BMA150_HIGH_G_EN_MSK,
+				BMA150_HIGH_G_EN_REG);
+}
+
+
+static int bma150_set_any_motion_interrupt(struct bma150_data *bma150,
+						u8 enable, u8 dur, u8 thres)
+{
+	int error;
+
+	error = bma150_set_reg_bits(bma150->client, dur,
+				BMA150_ANY_MOTION_DUR_POS,
+				BMA150_ANY_MOTION_DUR_MSK,
+				BMA150_ANY_MOTION_DUR_REG);
+	if (error)
+		return error;
+
+	error = bma150_write_byte(bma150->client,
+				BMA150_ANY_MOTION_THRES_REG, thres);
+	if (error)
+		return error;
+
+	error = bma150_set_reg_bits(bma150->client, !!enable,
+				BMA150_ADV_INT_EN_POS, BMA150_ADV_INT_EN_MSK,
+				BMA150_ADV_INT_EN_REG);
+	if (error)
+		return error;
+
+	return bma150_set_reg_bits(bma150->client, !!enable,
+				BMA150_ANY_MOTION_EN_POS,
+				BMA150_ANY_MOTION_EN_MSK,
+				BMA150_ANY_MOTION_EN_REG);
+}
+
+static void bma150_report_xyz(struct bma150_data *bma150)
+{
+	u8 data[BMA150_XYZ_DATA_SIZE];
+	s16 x, y, z;
+	s32 ret;
+
+	ret = i2c_smbus_read_i2c_block_data(bma150->client,
+			BMA150_ACC_X_LSB_REG, BMA150_XYZ_DATA_SIZE, data);
+	if (ret != BMA150_XYZ_DATA_SIZE)
+		return;
+
+	x = ((0xc0 & data[0]) >> 6) | (data[1] << 2);
+	y = ((0xc0 & data[2]) >> 6) | (data[3] << 2);
+	z = ((0xc0 & data[4]) >> 6) | (data[5] << 2);
+
+	x = sign_extend32(x, 9);
+	y = sign_extend32(y, 9);
+	z = sign_extend32(z, 9);
+
+	input_report_abs(bma150->input, ABS_X, x);
+	input_report_abs(bma150->input, ABS_Y, y);
+	input_report_abs(bma150->input, ABS_Z, z);
+	input_sync(bma150->input);
+}
+
+static irqreturn_t bma150_irq_thread(int irq, void *dev)
+{
+	bma150_report_xyz(dev);
+
+	return IRQ_HANDLED;
+}
+
+static void bma150_poll(struct input_dev *input)
+{
+	struct bma150_data *bma150 = input_get_drvdata(input);
+
+	bma150_report_xyz(bma150);
+}
+
+static int bma150_open(struct input_dev *input)
+{
+	struct bma150_data *bma150 = input_get_drvdata(input);
+	int error;
+
+	error = pm_runtime_get_sync(&bma150->client->dev);
+	if (error < 0 && error != -ENOSYS)
+		return error;
+
+	/*
+	 * See if runtime PM woke up the device. If runtime PM
+	 * is disabled we need to do it ourselves.
+	 */
+	if (bma150->mode != BMA150_MODE_NORMAL) {
+		error = bma150_set_mode(bma150, BMA150_MODE_NORMAL);
+		if (error)
+			return error;
+	}
+
+	return 0;
+}
+
+static void bma150_close(struct input_dev *input)
+{
+	struct bma150_data *bma150 = input_get_drvdata(input);
+
+	pm_runtime_put_sync(&bma150->client->dev);
+
+	if (bma150->mode != BMA150_MODE_SLEEP)
+		bma150_set_mode(bma150, BMA150_MODE_SLEEP);
+}
+
+static int bma150_initialize(struct bma150_data *bma150,
+			     const struct bma150_cfg *cfg)
+{
+	int error;
+
+	error = bma150_soft_reset(bma150);
+	if (error)
+		return error;
+
+	error = bma150_set_bandwidth(bma150, cfg->bandwidth);
+	if (error)
+		return error;
+
+	error = bma150_set_range(bma150, cfg->range);
+	if (error)
+		return error;
+
+	if (bma150->client->irq) {
+		error = bma150_set_any_motion_interrupt(bma150,
+					cfg->any_motion_int,
+					cfg->any_motion_dur,
+					cfg->any_motion_thres);
+		if (error)
+			return error;
+
+		error = bma150_set_high_g_interrupt(bma150,
+					cfg->hg_int, cfg->hg_hyst,
+					cfg->hg_dur, cfg->hg_thres);
+		if (error)
+			return error;
+
+		error = bma150_set_low_g_interrupt(bma150,
+					cfg->lg_int, cfg->lg_hyst,
+					cfg->lg_dur, cfg->lg_thres);
+		if (error)
+			return error;
+	}
+
+	return bma150_set_mode(bma150, BMA150_MODE_SLEEP);
+}
+
+static int bma150_probe(struct i2c_client *client,
+			const struct i2c_device_id *id)
+{
+	const struct bma150_platform_data *pdata =
+			dev_get_platdata(&client->dev);
+	const struct bma150_cfg *cfg;
+	struct bma150_data *bma150;
+	struct input_dev *idev;
+	int chip_id;
+	int error;
+
+	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
+		dev_err(&client->dev, "i2c_check_functionality error\n");
+		return -EIO;
+	}
+
+	chip_id = i2c_smbus_read_byte_data(client, BMA150_CHIP_ID_REG);
+	if (chip_id != BMA150_CHIP_ID) {
+		dev_err(&client->dev, "BMA150 chip id error: %d\n", chip_id);
+		return -EINVAL;
+	}
+
+	bma150 = devm_kzalloc(&client->dev, sizeof(*bma150), GFP_KERNEL);
+	if (!bma150)
+		return -ENOMEM;
+
+	bma150->client = client;
+
+	if (pdata) {
+		if (pdata->irq_gpio_cfg) {
+			error = pdata->irq_gpio_cfg();
+			if (error) {
+				dev_err(&client->dev,
+					"IRQ GPIO conf. error %d, error %d\n",
+					client->irq, error);
+				return error;
+			}
+		}
+		cfg = &pdata->cfg;
+	} else {
+		cfg = &default_cfg;
+	}
+
+	error = bma150_initialize(bma150, cfg);
+	if (error)
+		return error;
+
+	idev = devm_input_allocate_device(&bma150->client->dev);
+	if (!idev)
+		return -ENOMEM;
+
+	input_set_drvdata(idev, bma150);
+	bma150->input = idev;
+
+	idev->name = BMA150_DRIVER;
+	idev->phys = BMA150_DRIVER "/input0";
+	idev->id.bustype = BUS_I2C;
+
+	idev->open = bma150_open;
+	idev->close = bma150_close;
+
+	input_set_abs_params(idev, ABS_X, ABSMIN_ACC_VAL, ABSMAX_ACC_VAL, 0, 0);
+	input_set_abs_params(idev, ABS_Y, ABSMIN_ACC_VAL, ABSMAX_ACC_VAL, 0, 0);
+	input_set_abs_params(idev, ABS_Z, ABSMIN_ACC_VAL, ABSMAX_ACC_VAL, 0, 0);
+
+	if (client->irq <= 0) {
+		error = input_setup_polling(idev, bma150_poll);
+		if (error)
+			return error;
+
+		input_set_poll_interval(idev, BMA150_POLL_INTERVAL);
+		input_set_min_poll_interval(idev, BMA150_POLL_MIN);
+		input_set_max_poll_interval(idev, BMA150_POLL_MAX);
+	}
+
+	error = input_register_device(idev);
+	if (error)
+		return error;
+
+	if (client->irq > 0) {
+		error = devm_request_threaded_irq(&client->dev, client->irq,
+					NULL, bma150_irq_thread,
+					IRQF_TRIGGER_RISING | IRQF_ONESHOT,
+					BMA150_DRIVER, bma150);
+		if (error) {
+			dev_err(&client->dev,
+				"irq request failed %d, error %d\n",
+				client->irq, error);
+			return error;
+		}
+	}
+
+	i2c_set_clientdata(client, bma150);
+
+	pm_runtime_enable(&client->dev);
+
+	return 0;
+}
+
+static void bma150_remove(struct i2c_client *client)
+{
+	pm_runtime_disable(&client->dev);
+}
+
+static int __maybe_unused bma150_suspend(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct bma150_data *bma150 = i2c_get_clientdata(client);
+
+	return bma150_set_mode(bma150, BMA150_MODE_SLEEP);
+}
+
+static int __maybe_unused bma150_resume(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct bma150_data *bma150 = i2c_get_clientdata(client);
+
+	return bma150_set_mode(bma150, BMA150_MODE_NORMAL);
+}
+
+static UNIVERSAL_DEV_PM_OPS(bma150_pm, bma150_suspend, bma150_resume, NULL);
+
+static const struct i2c_device_id bma150_id[] = {
+	{ "bma150", 0 },
+	{ "smb380", 0 },
+	{ "bma023", 0 },
+	{ }
+};
+
+MODULE_DEVICE_TABLE(i2c, bma150_id);
+
+static struct i2c_driver bma150_driver = {
+	.driver = {
+		.name	= BMA150_DRIVER,
+		.pm	= &bma150_pm,
+	},
+	.class		= I2C_CLASS_HWMON,
+	.id_table	= bma150_id,
+	.probe		= bma150_probe,
+	.remove		= bma150_remove,
+};
+
+module_i2c_driver(bma150_driver);
+
+MODULE_AUTHOR("Albert Zhang <xu.zhang@bosch-sensortec.com>");
+MODULE_DESCRIPTION("BMA150 driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/misc/cm109.c b/drivers/input/misc/cm109.c
new file mode 100644
index 000000000..728325a2d
--- /dev/null
+++ b/drivers/input/misc/cm109.c
@@ -0,0 +1,949 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Driver for the VoIP USB phones with CM109 chipsets.
+ *
+ * Copyright (C) 2007 - 2008 Alfred E. Heggestad <aeh@db.org>
+ */
+
+/*
+ *   Tested devices:
+ *	- Komunikate KIP1000
+ *	- Genius G-talk
+ *	- Allied-Telesis Corega USBPH01
+ *	- ...
+ *
+ * This driver is based on the yealink.c driver
+ *
+ * Thanks to:
+ *   - Authors of yealink.c
+ *   - Thomas Reitmayr
+ *   - Oliver Neukum for good review comments and code
+ *   - Shaun Jackman <sjackman@gmail.com> for Genius G-talk keymap
+ *   - Dmitry Torokhov for valuable input and review
+ *
+ * Todo:
+ *   - Read/write EEPROM
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/rwsem.h>
+#include <linux/usb/input.h>
+
+#define DRIVER_VERSION "20080805"
+#define DRIVER_AUTHOR  "Alfred E. Heggestad"
+#define DRIVER_DESC    "CM109 phone driver"
+
+static char *phone = "kip1000";
+module_param(phone, charp, S_IRUSR);
+MODULE_PARM_DESC(phone, "Phone name {kip1000, gtalk, usbph01, atcom}");
+
+enum {
+	/* HID Registers */
+	HID_IR0 = 0x00, /* Record/Playback-mute button, Volume up/down  */
+	HID_IR1 = 0x01, /* GPI, generic registers or EEPROM_DATA0       */
+	HID_IR2 = 0x02, /* Generic registers or EEPROM_DATA1            */
+	HID_IR3 = 0x03, /* Generic registers or EEPROM_CTRL             */
+	HID_OR0 = 0x00, /* Mapping control, buzzer, SPDIF (offset 0x04) */
+	HID_OR1 = 0x01, /* GPO - General Purpose Output                 */
+	HID_OR2 = 0x02, /* Set GPIO to input/output mode                */
+	HID_OR3 = 0x03, /* SPDIF status channel or EEPROM_CTRL          */
+
+	/* HID_IR0 */
+	RECORD_MUTE   = 1 << 3,
+	PLAYBACK_MUTE = 1 << 2,
+	VOLUME_DOWN   = 1 << 1,
+	VOLUME_UP     = 1 << 0,
+
+	/* HID_OR0 */
+	/* bits 7-6
+	   0: HID_OR1-2 are used for GPO; HID_OR0, 3 are used for buzzer
+	      and SPDIF
+	   1: HID_OR0-3 are used as generic HID registers
+	   2: Values written to HID_OR0-3 are also mapped to MCU_CTRL,
+	      EEPROM_DATA0-1, EEPROM_CTRL (see Note)
+	   3: Reserved
+	 */
+	HID_OR_GPO_BUZ_SPDIF   = 0 << 6,
+	HID_OR_GENERIC_HID_REG = 1 << 6,
+	HID_OR_MAP_MCU_EEPROM  = 2 << 6,
+
+	BUZZER_ON = 1 << 5,
+
+	/* up to 256 normal keys, up to 15 special key combinations */
+	KEYMAP_SIZE = 256 + 15,
+};
+
+/* CM109 protocol packet */
+struct cm109_ctl_packet {
+	u8 byte[4];
+} __attribute__ ((packed));
+
+enum { USB_PKT_LEN = sizeof(struct cm109_ctl_packet) };
+
+/* CM109 device structure */
+struct cm109_dev {
+	struct input_dev *idev;	 /* input device */
+	struct usb_device *udev; /* usb device */
+	struct usb_interface *intf;
+
+	/* irq input channel */
+	struct cm109_ctl_packet *irq_data;
+	dma_addr_t irq_dma;
+	struct urb *urb_irq;
+
+	/* control output channel */
+	struct cm109_ctl_packet *ctl_data;
+	dma_addr_t ctl_dma;
+	struct usb_ctrlrequest *ctl_req;
+	struct urb *urb_ctl;
+	/*
+	 * The 3 bitfields below are protected by ctl_submit_lock.
+	 * They have to be separate since they are accessed from IRQ
+	 * context.
+	 */
+	unsigned irq_urb_pending:1;	/* irq_urb is in flight */
+	unsigned ctl_urb_pending:1;	/* ctl_urb is in flight */
+	unsigned buzzer_pending:1;	/* need to issue buzz command */
+	spinlock_t ctl_submit_lock;
+
+	unsigned char buzzer_state;	/* on/off */
+
+	/* flags */
+	unsigned open:1;
+	unsigned resetting:1;
+	unsigned shutdown:1;
+
+	/* This mutex protects writes to the above flags */
+	struct mutex pm_mutex;
+
+	unsigned short keymap[KEYMAP_SIZE];
+
+	char phys[64];		/* physical device path */
+	int key_code;		/* last reported key */
+	int keybit;		/* 0=new scan  1,2,4,8=scan columns  */
+	u8 gpi;			/* Cached value of GPI (high nibble) */
+};
+
+/******************************************************************************
+ * CM109 key interface
+ *****************************************************************************/
+
+static unsigned short special_keymap(int code)
+{
+	if (code > 0xff) {
+		switch (code - 0xff) {
+		case RECORD_MUTE:	return KEY_MICMUTE;
+		case PLAYBACK_MUTE:	return KEY_MUTE;
+		case VOLUME_DOWN:	return KEY_VOLUMEDOWN;
+		case VOLUME_UP:		return KEY_VOLUMEUP;
+		}
+	}
+	return KEY_RESERVED;
+}
+
+/* Map device buttons to internal key events.
+ *
+ * The "up" and "down" keys, are symbolised by arrows on the button.
+ * The "pickup" and "hangup" keys are symbolised by a green and red phone
+ * on the button.
+
+ Komunikate KIP1000 Keyboard Matrix
+
+     -> -- 1 -- 2 -- 3  --> GPI pin 4 (0x10)
+      |    |    |    |
+     <- -- 4 -- 5 -- 6  --> GPI pin 5 (0x20)
+      |    |    |    |
+     END - 7 -- 8 -- 9  --> GPI pin 6 (0x40)
+      |    |    |    |
+     OK -- * -- 0 -- #  --> GPI pin 7 (0x80)
+      |    |    |    |
+
+     /|\  /|\  /|\  /|\
+      |    |    |    |
+GPO
+pin:  3    2    1    0
+     0x8  0x4  0x2  0x1
+
+ */
+static unsigned short keymap_kip1000(int scancode)
+{
+	switch (scancode) {				/* phone key:   */
+	case 0x82: return KEY_NUMERIC_0;		/*   0          */
+	case 0x14: return KEY_NUMERIC_1;		/*   1          */
+	case 0x12: return KEY_NUMERIC_2;		/*   2          */
+	case 0x11: return KEY_NUMERIC_3;		/*   3          */
+	case 0x24: return KEY_NUMERIC_4;		/*   4          */
+	case 0x22: return KEY_NUMERIC_5;		/*   5          */
+	case 0x21: return KEY_NUMERIC_6;		/*   6          */
+	case 0x44: return KEY_NUMERIC_7;		/*   7          */
+	case 0x42: return KEY_NUMERIC_8;		/*   8          */
+	case 0x41: return KEY_NUMERIC_9;		/*   9          */
+	case 0x81: return KEY_NUMERIC_POUND;		/*   #          */
+	case 0x84: return KEY_NUMERIC_STAR;		/*   *          */
+	case 0x88: return KEY_ENTER;			/*   pickup     */
+	case 0x48: return KEY_ESC;			/*   hangup     */
+	case 0x28: return KEY_LEFT;			/*   IN         */
+	case 0x18: return KEY_RIGHT;			/*   OUT        */
+	default:   return special_keymap(scancode);
+	}
+}
+
+/*
+  Contributed by Shaun Jackman <sjackman@gmail.com>
+
+  Genius G-Talk keyboard matrix
+     0 1 2 3
+  4: 0 4 8 Talk
+  5: 1 5 9 End
+  6: 2 6 # Up
+  7: 3 7 * Down
+*/
+static unsigned short keymap_gtalk(int scancode)
+{
+	switch (scancode) {
+	case 0x11: return KEY_NUMERIC_0;
+	case 0x21: return KEY_NUMERIC_1;
+	case 0x41: return KEY_NUMERIC_2;
+	case 0x81: return KEY_NUMERIC_3;
+	case 0x12: return KEY_NUMERIC_4;
+	case 0x22: return KEY_NUMERIC_5;
+	case 0x42: return KEY_NUMERIC_6;
+	case 0x82: return KEY_NUMERIC_7;
+	case 0x14: return KEY_NUMERIC_8;
+	case 0x24: return KEY_NUMERIC_9;
+	case 0x44: return KEY_NUMERIC_POUND;	/* # */
+	case 0x84: return KEY_NUMERIC_STAR;	/* * */
+	case 0x18: return KEY_ENTER;		/* Talk (green handset) */
+	case 0x28: return KEY_ESC;		/* End (red handset) */
+	case 0x48: return KEY_UP;		/* Menu up (rocker switch) */
+	case 0x88: return KEY_DOWN;		/* Menu down (rocker switch) */
+	default:   return special_keymap(scancode);
+	}
+}
+
+/*
+ * Keymap for Allied-Telesis Corega USBPH01
+ * http://www.alliedtelesis-corega.com/2/1344/1437/1360/chprd.html
+ *
+ * Contributed by july@nat.bg
+ */
+static unsigned short keymap_usbph01(int scancode)
+{
+	switch (scancode) {
+	case 0x11: return KEY_NUMERIC_0;		/*   0          */
+	case 0x21: return KEY_NUMERIC_1;		/*   1          */
+	case 0x41: return KEY_NUMERIC_2;		/*   2          */
+	case 0x81: return KEY_NUMERIC_3;		/*   3          */
+	case 0x12: return KEY_NUMERIC_4;		/*   4          */
+	case 0x22: return KEY_NUMERIC_5;		/*   5          */
+	case 0x42: return KEY_NUMERIC_6;		/*   6          */
+	case 0x82: return KEY_NUMERIC_7;		/*   7          */
+	case 0x14: return KEY_NUMERIC_8;		/*   8          */
+	case 0x24: return KEY_NUMERIC_9;		/*   9          */
+	case 0x44: return KEY_NUMERIC_POUND;		/*   #          */
+	case 0x84: return KEY_NUMERIC_STAR;		/*   *          */
+	case 0x18: return KEY_ENTER;			/*   pickup     */
+	case 0x28: return KEY_ESC;			/*   hangup     */
+	case 0x48: return KEY_LEFT;			/*   IN         */
+	case 0x88: return KEY_RIGHT;			/*   OUT        */
+	default:   return special_keymap(scancode);
+	}
+}
+
+/*
+ * Keymap for ATCom AU-100
+ * http://www.atcom.cn/products.html 
+ * http://www.packetizer.com/products/au100/
+ * http://www.voip-info.org/wiki/view/AU-100
+ *
+ * Contributed by daniel@gimpelevich.san-francisco.ca.us
+ */
+static unsigned short keymap_atcom(int scancode)
+{
+	switch (scancode) {				/* phone key:   */
+	case 0x82: return KEY_NUMERIC_0;		/*   0          */
+	case 0x11: return KEY_NUMERIC_1;		/*   1          */
+	case 0x12: return KEY_NUMERIC_2;		/*   2          */
+	case 0x14: return KEY_NUMERIC_3;		/*   3          */
+	case 0x21: return KEY_NUMERIC_4;		/*   4          */
+	case 0x22: return KEY_NUMERIC_5;		/*   5          */
+	case 0x24: return KEY_NUMERIC_6;		/*   6          */
+	case 0x41: return KEY_NUMERIC_7;		/*   7          */
+	case 0x42: return KEY_NUMERIC_8;		/*   8          */
+	case 0x44: return KEY_NUMERIC_9;		/*   9          */
+	case 0x84: return KEY_NUMERIC_POUND;		/*   #          */
+	case 0x81: return KEY_NUMERIC_STAR;		/*   *          */
+	case 0x18: return KEY_ENTER;			/*   pickup     */
+	case 0x28: return KEY_ESC;			/*   hangup     */
+	case 0x48: return KEY_LEFT;			/* left arrow   */
+	case 0x88: return KEY_RIGHT;			/* right arrow  */
+	default:   return special_keymap(scancode);
+	}
+}
+
+static unsigned short (*keymap)(int) = keymap_kip1000;
+
+/*
+ * Completes a request by converting the data into events for the
+ * input subsystem.
+ */
+static void report_key(struct cm109_dev *dev, int key)
+{
+	struct input_dev *idev = dev->idev;
+
+	if (dev->key_code >= 0) {
+		/* old key up */
+		input_report_key(idev, dev->key_code, 0);
+	}
+
+	dev->key_code = key;
+	if (key >= 0) {
+		/* new valid key */
+		input_report_key(idev, key, 1);
+	}
+
+	input_sync(idev);
+}
+
+/*
+ * Converts data of special key presses (volume, mute) into events
+ * for the input subsystem, sends press-n-release for mute keys.
+ */
+static void cm109_report_special(struct cm109_dev *dev)
+{
+	static const u8 autorelease = RECORD_MUTE | PLAYBACK_MUTE;
+	struct input_dev *idev = dev->idev;
+	u8 data = dev->irq_data->byte[HID_IR0];
+	unsigned short keycode;
+	int i;
+
+	for (i = 0; i < 4; i++) {
+		keycode = dev->keymap[0xff + BIT(i)];
+		if (keycode == KEY_RESERVED)
+			continue;
+
+		input_report_key(idev, keycode, data & BIT(i));
+		if (data & autorelease & BIT(i)) {
+			input_sync(idev);
+			input_report_key(idev, keycode, 0);
+		}
+	}
+	input_sync(idev);
+}
+
+/******************************************************************************
+ * CM109 usb communication interface
+ *****************************************************************************/
+
+static void cm109_submit_buzz_toggle(struct cm109_dev *dev)
+{
+	int error;
+
+	if (dev->buzzer_state)
+		dev->ctl_data->byte[HID_OR0] |= BUZZER_ON;
+	else
+		dev->ctl_data->byte[HID_OR0] &= ~BUZZER_ON;
+
+	error = usb_submit_urb(dev->urb_ctl, GFP_ATOMIC);
+	if (error)
+		dev_err(&dev->intf->dev,
+			"%s: usb_submit_urb (urb_ctl) failed %d\n",
+			__func__, error);
+}
+
+/*
+ * IRQ handler
+ */
+static void cm109_urb_irq_callback(struct urb *urb)
+{
+	struct cm109_dev *dev = urb->context;
+	const int status = urb->status;
+	int error;
+	unsigned long flags;
+
+	dev_dbg(&dev->intf->dev, "### URB IRQ: [0x%02x 0x%02x 0x%02x 0x%02x] keybit=0x%02x\n",
+	     dev->irq_data->byte[0],
+	     dev->irq_data->byte[1],
+	     dev->irq_data->byte[2],
+	     dev->irq_data->byte[3],
+	     dev->keybit);
+
+	if (status) {
+		if (status == -ESHUTDOWN)
+			return;
+		dev_err_ratelimited(&dev->intf->dev, "%s: urb status %d\n",
+				    __func__, status);
+		goto out;
+	}
+
+	/* Special keys */
+	cm109_report_special(dev);
+
+	/* Scan key column */
+	if (dev->keybit == 0xf) {
+
+		/* Any changes ? */
+		if ((dev->gpi & 0xf0) == (dev->irq_data->byte[HID_IR1] & 0xf0))
+			goto out;
+
+		dev->gpi = dev->irq_data->byte[HID_IR1] & 0xf0;
+		dev->keybit = 0x1;
+	} else {
+		report_key(dev, dev->keymap[dev->irq_data->byte[HID_IR1]]);
+
+		dev->keybit <<= 1;
+		if (dev->keybit > 0x8)
+			dev->keybit = 0xf;
+	}
+
+ out:
+
+	spin_lock_irqsave(&dev->ctl_submit_lock, flags);
+
+	dev->irq_urb_pending = 0;
+
+	if (likely(!dev->shutdown)) {
+
+		if (dev->buzzer_state)
+			dev->ctl_data->byte[HID_OR0] |= BUZZER_ON;
+		else
+			dev->ctl_data->byte[HID_OR0] &= ~BUZZER_ON;
+
+		dev->ctl_data->byte[HID_OR1] = dev->keybit;
+		dev->ctl_data->byte[HID_OR2] = dev->keybit;
+
+		dev->buzzer_pending = 0;
+		dev->ctl_urb_pending = 1;
+
+		error = usb_submit_urb(dev->urb_ctl, GFP_ATOMIC);
+		if (error)
+			dev_err(&dev->intf->dev,
+				"%s: usb_submit_urb (urb_ctl) failed %d\n",
+				__func__, error);
+	}
+
+	spin_unlock_irqrestore(&dev->ctl_submit_lock, flags);
+}
+
+static void cm109_urb_ctl_callback(struct urb *urb)
+{
+	struct cm109_dev *dev = urb->context;
+	const int status = urb->status;
+	int error;
+	unsigned long flags;
+
+	dev_dbg(&dev->intf->dev, "### URB CTL: [0x%02x 0x%02x 0x%02x 0x%02x]\n",
+	     dev->ctl_data->byte[0],
+	     dev->ctl_data->byte[1],
+	     dev->ctl_data->byte[2],
+	     dev->ctl_data->byte[3]);
+
+	if (status) {
+		if (status == -ESHUTDOWN)
+			return;
+		dev_err_ratelimited(&dev->intf->dev, "%s: urb status %d\n",
+				    __func__, status);
+	}
+
+	spin_lock_irqsave(&dev->ctl_submit_lock, flags);
+
+	dev->ctl_urb_pending = 0;
+
+	if (likely(!dev->shutdown)) {
+
+		if (dev->buzzer_pending || status) {
+			dev->buzzer_pending = 0;
+			dev->ctl_urb_pending = 1;
+			cm109_submit_buzz_toggle(dev);
+		} else if (likely(!dev->irq_urb_pending)) {
+			/* ask for key data */
+			dev->irq_urb_pending = 1;
+			error = usb_submit_urb(dev->urb_irq, GFP_ATOMIC);
+			if (error)
+				dev_err(&dev->intf->dev,
+					"%s: usb_submit_urb (urb_irq) failed %d\n",
+					__func__, error);
+		}
+	}
+
+	spin_unlock_irqrestore(&dev->ctl_submit_lock, flags);
+}
+
+static void cm109_toggle_buzzer_async(struct cm109_dev *dev)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&dev->ctl_submit_lock, flags);
+
+	if (dev->ctl_urb_pending) {
+		/* URB completion will resubmit */
+		dev->buzzer_pending = 1;
+	} else {
+		dev->ctl_urb_pending = 1;
+		cm109_submit_buzz_toggle(dev);
+	}
+
+	spin_unlock_irqrestore(&dev->ctl_submit_lock, flags);
+}
+
+static void cm109_toggle_buzzer_sync(struct cm109_dev *dev, int on)
+{
+	int error;
+
+	if (on)
+		dev->ctl_data->byte[HID_OR0] |= BUZZER_ON;
+	else
+		dev->ctl_data->byte[HID_OR0] &= ~BUZZER_ON;
+
+	error = usb_control_msg(dev->udev,
+				usb_sndctrlpipe(dev->udev, 0),
+				dev->ctl_req->bRequest,
+				dev->ctl_req->bRequestType,
+				le16_to_cpu(dev->ctl_req->wValue),
+				le16_to_cpu(dev->ctl_req->wIndex),
+				dev->ctl_data,
+				USB_PKT_LEN, USB_CTRL_SET_TIMEOUT);
+	if (error < 0 && error != -EINTR)
+		dev_err(&dev->intf->dev, "%s: usb_control_msg() failed %d\n",
+			__func__, error);
+}
+
+static void cm109_stop_traffic(struct cm109_dev *dev)
+{
+	dev->shutdown = 1;
+	/*
+	 * Make sure other CPUs see this
+	 */
+	smp_wmb();
+
+	usb_kill_urb(dev->urb_ctl);
+	usb_kill_urb(dev->urb_irq);
+
+	cm109_toggle_buzzer_sync(dev, 0);
+
+	dev->shutdown = 0;
+	smp_wmb();
+}
+
+static void cm109_restore_state(struct cm109_dev *dev)
+{
+	if (dev->open) {
+		/*
+		 * Restore buzzer state.
+		 * This will also kick regular URB submission
+		 */
+		cm109_toggle_buzzer_async(dev);
+	}
+}
+
+/******************************************************************************
+ * input event interface
+ *****************************************************************************/
+
+static int cm109_input_open(struct input_dev *idev)
+{
+	struct cm109_dev *dev = input_get_drvdata(idev);
+	int error;
+
+	error = usb_autopm_get_interface(dev->intf);
+	if (error < 0) {
+		dev_err(&idev->dev, "%s - cannot autoresume, result %d\n",
+			__func__, error);
+		return error;
+	}
+
+	mutex_lock(&dev->pm_mutex);
+
+	dev->buzzer_state = 0;
+	dev->key_code = -1;	/* no keys pressed */
+	dev->keybit = 0xf;
+
+	/* issue INIT */
+	dev->ctl_data->byte[HID_OR0] = HID_OR_GPO_BUZ_SPDIF;
+	dev->ctl_data->byte[HID_OR1] = dev->keybit;
+	dev->ctl_data->byte[HID_OR2] = dev->keybit;
+	dev->ctl_data->byte[HID_OR3] = 0x00;
+
+	dev->ctl_urb_pending = 1;
+	error = usb_submit_urb(dev->urb_ctl, GFP_KERNEL);
+	if (error) {
+		dev->ctl_urb_pending = 0;
+		dev_err(&dev->intf->dev, "%s: usb_submit_urb (urb_ctl) failed %d\n",
+			__func__, error);
+	} else {
+		dev->open = 1;
+	}
+
+	mutex_unlock(&dev->pm_mutex);
+
+	if (error)
+		usb_autopm_put_interface(dev->intf);
+
+	return error;
+}
+
+static void cm109_input_close(struct input_dev *idev)
+{
+	struct cm109_dev *dev = input_get_drvdata(idev);
+
+	mutex_lock(&dev->pm_mutex);
+
+	/*
+	 * Once we are here event delivery is stopped so we
+	 * don't need to worry about someone starting buzzer
+	 * again
+	 */
+	cm109_stop_traffic(dev);
+	dev->open = 0;
+
+	mutex_unlock(&dev->pm_mutex);
+
+	usb_autopm_put_interface(dev->intf);
+}
+
+static int cm109_input_ev(struct input_dev *idev, unsigned int type,
+			  unsigned int code, int value)
+{
+	struct cm109_dev *dev = input_get_drvdata(idev);
+
+	dev_dbg(&dev->intf->dev,
+		"input_ev: type=%u code=%u value=%d\n", type, code, value);
+
+	if (type != EV_SND)
+		return -EINVAL;
+
+	switch (code) {
+	case SND_TONE:
+	case SND_BELL:
+		dev->buzzer_state = !!value;
+		if (!dev->resetting)
+			cm109_toggle_buzzer_async(dev);
+		return 0;
+
+	default:
+		return -EINVAL;
+	}
+}
+
+
+/******************************************************************************
+ * Linux interface and usb initialisation
+ *****************************************************************************/
+
+struct driver_info {
+	char *name;
+};
+
+static const struct driver_info info_cm109 = {
+	.name = "CM109 USB driver",
+};
+
+enum {
+	VENDOR_ID        = 0x0d8c, /* C-Media Electronics */
+	PRODUCT_ID_CM109 = 0x000e, /* CM109 defines range 0x0008 - 0x000f */
+};
+
+/* table of devices that work with this driver */
+static const struct usb_device_id cm109_usb_table[] = {
+	{
+		.match_flags = USB_DEVICE_ID_MATCH_DEVICE |
+				USB_DEVICE_ID_MATCH_INT_INFO,
+		.idVendor = VENDOR_ID,
+		.idProduct = PRODUCT_ID_CM109,
+		.bInterfaceClass = USB_CLASS_HID,
+		.bInterfaceSubClass = 0,
+		.bInterfaceProtocol = 0,
+		.driver_info = (kernel_ulong_t) &info_cm109
+	},
+	/* you can add more devices here with product ID 0x0008 - 0x000f */
+	{ }
+};
+
+static void cm109_usb_cleanup(struct cm109_dev *dev)
+{
+	kfree(dev->ctl_req);
+	usb_free_coherent(dev->udev, USB_PKT_LEN, dev->ctl_data, dev->ctl_dma);
+	usb_free_coherent(dev->udev, USB_PKT_LEN, dev->irq_data, dev->irq_dma);
+
+	usb_free_urb(dev->urb_irq);	/* parameter validation in core/urb */
+	usb_free_urb(dev->urb_ctl);	/* parameter validation in core/urb */
+	kfree(dev);
+}
+
+static void cm109_usb_disconnect(struct usb_interface *interface)
+{
+	struct cm109_dev *dev = usb_get_intfdata(interface);
+
+	usb_set_intfdata(interface, NULL);
+	input_unregister_device(dev->idev);
+	cm109_usb_cleanup(dev);
+}
+
+static int cm109_usb_probe(struct usb_interface *intf,
+			   const struct usb_device_id *id)
+{
+	struct usb_device *udev = interface_to_usbdev(intf);
+	struct driver_info *nfo = (struct driver_info *)id->driver_info;
+	struct usb_host_interface *interface;
+	struct usb_endpoint_descriptor *endpoint;
+	struct cm109_dev *dev;
+	struct input_dev *input_dev = NULL;
+	int ret, pipe, i;
+	int error = -ENOMEM;
+
+	interface = intf->cur_altsetting;
+
+	if (interface->desc.bNumEndpoints < 1)
+		return -ENODEV;
+
+	endpoint = &interface->endpoint[0].desc;
+
+	if (!usb_endpoint_is_int_in(endpoint))
+		return -ENODEV;
+
+	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+	if (!dev)
+		return -ENOMEM;
+
+	spin_lock_init(&dev->ctl_submit_lock);
+	mutex_init(&dev->pm_mutex);
+
+	dev->udev = udev;
+	dev->intf = intf;
+
+	dev->idev = input_dev = input_allocate_device();
+	if (!input_dev)
+		goto err_out;
+
+	/* allocate usb buffers */
+	dev->irq_data = usb_alloc_coherent(udev, USB_PKT_LEN,
+					   GFP_KERNEL, &dev->irq_dma);
+	if (!dev->irq_data)
+		goto err_out;
+
+	dev->ctl_data = usb_alloc_coherent(udev, USB_PKT_LEN,
+					   GFP_KERNEL, &dev->ctl_dma);
+	if (!dev->ctl_data)
+		goto err_out;
+
+	dev->ctl_req = kmalloc(sizeof(*(dev->ctl_req)), GFP_KERNEL);
+	if (!dev->ctl_req)
+		goto err_out;
+
+	/* allocate urb structures */
+	dev->urb_irq = usb_alloc_urb(0, GFP_KERNEL);
+	if (!dev->urb_irq)
+		goto err_out;
+
+	dev->urb_ctl = usb_alloc_urb(0, GFP_KERNEL);
+	if (!dev->urb_ctl)
+		goto err_out;
+
+	/* get a handle to the interrupt data pipe */
+	pipe = usb_rcvintpipe(udev, endpoint->bEndpointAddress);
+	ret = usb_maxpacket(udev, pipe);
+	if (ret != USB_PKT_LEN)
+		dev_err(&intf->dev, "invalid payload size %d, expected %d\n",
+			ret, USB_PKT_LEN);
+
+	/* initialise irq urb */
+	usb_fill_int_urb(dev->urb_irq, udev, pipe, dev->irq_data,
+			 USB_PKT_LEN,
+			 cm109_urb_irq_callback, dev, endpoint->bInterval);
+	dev->urb_irq->transfer_dma = dev->irq_dma;
+	dev->urb_irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+	dev->urb_irq->dev = udev;
+
+	/* initialise ctl urb */
+	dev->ctl_req->bRequestType = USB_TYPE_CLASS | USB_RECIP_INTERFACE |
+					USB_DIR_OUT;
+	dev->ctl_req->bRequest = USB_REQ_SET_CONFIGURATION;
+	dev->ctl_req->wValue = cpu_to_le16(0x200);
+	dev->ctl_req->wIndex = cpu_to_le16(interface->desc.bInterfaceNumber);
+	dev->ctl_req->wLength = cpu_to_le16(USB_PKT_LEN);
+
+	usb_fill_control_urb(dev->urb_ctl, udev, usb_sndctrlpipe(udev, 0),
+			     (void *)dev->ctl_req, dev->ctl_data, USB_PKT_LEN,
+			     cm109_urb_ctl_callback, dev);
+	dev->urb_ctl->transfer_dma = dev->ctl_dma;
+	dev->urb_ctl->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+	dev->urb_ctl->dev = udev;
+
+	/* find out the physical bus location */
+	usb_make_path(udev, dev->phys, sizeof(dev->phys));
+	strlcat(dev->phys, "/input0", sizeof(dev->phys));
+
+	/* register settings for the input device */
+	input_dev->name = nfo->name;
+	input_dev->phys = dev->phys;
+	usb_to_input_id(udev, &input_dev->id);
+	input_dev->dev.parent = &intf->dev;
+
+	input_set_drvdata(input_dev, dev);
+	input_dev->open = cm109_input_open;
+	input_dev->close = cm109_input_close;
+	input_dev->event = cm109_input_ev;
+
+	input_dev->keycode = dev->keymap;
+	input_dev->keycodesize = sizeof(unsigned char);
+	input_dev->keycodemax = ARRAY_SIZE(dev->keymap);
+
+	input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_SND);
+	input_dev->sndbit[0] = BIT_MASK(SND_BELL) | BIT_MASK(SND_TONE);
+
+	/* register available key events */
+	for (i = 0; i < KEYMAP_SIZE; i++) {
+		unsigned short k = keymap(i);
+		dev->keymap[i] = k;
+		__set_bit(k, input_dev->keybit);
+	}
+	__clear_bit(KEY_RESERVED, input_dev->keybit);
+
+	error = input_register_device(dev->idev);
+	if (error)
+		goto err_out;
+
+	usb_set_intfdata(intf, dev);
+
+	return 0;
+
+ err_out:
+	input_free_device(input_dev);
+	cm109_usb_cleanup(dev);
+	return error;
+}
+
+static int cm109_usb_suspend(struct usb_interface *intf, pm_message_t message)
+{
+	struct cm109_dev *dev = usb_get_intfdata(intf);
+
+	dev_info(&intf->dev, "cm109: usb_suspend (event=%d)\n", message.event);
+
+	mutex_lock(&dev->pm_mutex);
+	cm109_stop_traffic(dev);
+	mutex_unlock(&dev->pm_mutex);
+
+	return 0;
+}
+
+static int cm109_usb_resume(struct usb_interface *intf)
+{
+	struct cm109_dev *dev = usb_get_intfdata(intf);
+
+	dev_info(&intf->dev, "cm109: usb_resume\n");
+
+	mutex_lock(&dev->pm_mutex);
+	cm109_restore_state(dev);
+	mutex_unlock(&dev->pm_mutex);
+
+	return 0;
+}
+
+static int cm109_usb_pre_reset(struct usb_interface *intf)
+{
+	struct cm109_dev *dev = usb_get_intfdata(intf);
+
+	mutex_lock(&dev->pm_mutex);
+
+	/*
+	 * Make sure input events don't try to toggle buzzer
+	 * while we are resetting
+	 */
+	dev->resetting = 1;
+	smp_wmb();
+
+	cm109_stop_traffic(dev);
+
+	return 0;
+}
+
+static int cm109_usb_post_reset(struct usb_interface *intf)
+{
+	struct cm109_dev *dev = usb_get_intfdata(intf);
+
+	dev->resetting = 0;
+	smp_wmb();
+
+	cm109_restore_state(dev);
+
+	mutex_unlock(&dev->pm_mutex);
+
+	return 0;
+}
+
+static struct usb_driver cm109_driver = {
+	.name		= "cm109",
+	.probe		= cm109_usb_probe,
+	.disconnect	= cm109_usb_disconnect,
+	.suspend	= cm109_usb_suspend,
+	.resume		= cm109_usb_resume,
+	.reset_resume	= cm109_usb_resume,
+	.pre_reset	= cm109_usb_pre_reset,
+	.post_reset	= cm109_usb_post_reset,
+	.id_table	= cm109_usb_table,
+	.supports_autosuspend = 1,
+};
+
+static int __init cm109_select_keymap(void)
+{
+	/* Load the phone keymap */
+	if (!strcasecmp(phone, "kip1000")) {
+		keymap = keymap_kip1000;
+		printk(KERN_INFO KBUILD_MODNAME ": "
+			"Keymap for Komunikate KIP1000 phone loaded\n");
+	} else if (!strcasecmp(phone, "gtalk")) {
+		keymap = keymap_gtalk;
+		printk(KERN_INFO KBUILD_MODNAME ": "
+			"Keymap for Genius G-talk phone loaded\n");
+	} else if (!strcasecmp(phone, "usbph01")) {
+		keymap = keymap_usbph01;
+		printk(KERN_INFO KBUILD_MODNAME ": "
+			"Keymap for Allied-Telesis Corega USBPH01 phone loaded\n");
+	} else if (!strcasecmp(phone, "atcom")) {
+		keymap = keymap_atcom;
+		printk(KERN_INFO KBUILD_MODNAME ": "
+			"Keymap for ATCom AU-100 phone loaded\n");
+	} else {
+		printk(KERN_ERR KBUILD_MODNAME ": "
+			"Unsupported phone: %s\n", phone);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int __init cm109_init(void)
+{
+	int err;
+
+	err = cm109_select_keymap();
+	if (err)
+		return err;
+
+	err = usb_register(&cm109_driver);
+	if (err)
+		return err;
+
+	printk(KERN_INFO KBUILD_MODNAME ": "
+		DRIVER_DESC ": " DRIVER_VERSION " (C) " DRIVER_AUTHOR "\n");
+
+	return 0;
+}
+
+static void __exit cm109_exit(void)
+{
+	usb_deregister(&cm109_driver);
+}
+
+module_init(cm109_init);
+module_exit(cm109_exit);
+
+MODULE_DEVICE_TABLE(usb, cm109_usb_table);
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/misc/cma3000_d0x.c b/drivers/input/misc/cma3000_d0x.c
new file mode 100644
index 000000000..e6feb73bb
--- /dev/null
+++ b/drivers/input/misc/cma3000_d0x.c
@@ -0,0 +1,388 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * VTI CMA3000_D0x Accelerometer driver
+ *
+ * Copyright (C) 2010 Texas Instruments
+ * Author: Hemanth V <hemanthv@ti.com>
+ */
+
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/input.h>
+#include <linux/input/cma3000.h>
+#include <linux/module.h>
+
+#include "cma3000_d0x.h"
+
+#define CMA3000_WHOAMI      0x00
+#define CMA3000_REVID       0x01
+#define CMA3000_CTRL        0x02
+#define CMA3000_STATUS      0x03
+#define CMA3000_RSTR        0x04
+#define CMA3000_INTSTATUS   0x05
+#define CMA3000_DOUTX       0x06
+#define CMA3000_DOUTY       0x07
+#define CMA3000_DOUTZ       0x08
+#define CMA3000_MDTHR       0x09
+#define CMA3000_MDFFTMR     0x0A
+#define CMA3000_FFTHR       0x0B
+
+#define CMA3000_RANGE2G    (1 << 7)
+#define CMA3000_RANGE8G    (0 << 7)
+#define CMA3000_BUSI2C     (0 << 4)
+#define CMA3000_MODEMASK   (7 << 1)
+#define CMA3000_GRANGEMASK (1 << 7)
+
+#define CMA3000_STATUS_PERR    1
+#define CMA3000_INTSTATUS_FFDET (1 << 2)
+
+/* Settling time delay in ms */
+#define CMA3000_SETDELAY    30
+
+/* Delay for clearing interrupt in us */
+#define CMA3000_INTDELAY    44
+
+
+/*
+ * Bit weights in mg for bit 0, other bits need
+ * multiply factor 2^n. Eight bit is the sign bit.
+ */
+#define BIT_TO_2G  18
+#define BIT_TO_8G  71
+
+struct cma3000_accl_data {
+	const struct cma3000_bus_ops *bus_ops;
+	const struct cma3000_platform_data *pdata;
+
+	struct device *dev;
+	struct input_dev *input_dev;
+
+	int bit_to_mg;
+	int irq;
+
+	int g_range;
+	u8 mode;
+
+	struct mutex mutex;
+	bool opened;
+	bool suspended;
+};
+
+#define CMA3000_READ(data, reg, msg) \
+	(data->bus_ops->read(data->dev, reg, msg))
+#define CMA3000_SET(data, reg, val, msg) \
+	((data)->bus_ops->write(data->dev, reg, val, msg))
+
+/*
+ * Conversion for each of the eight modes to g, depending
+ * on G range i.e 2G or 8G. Some modes always operate in
+ * 8G.
+ */
+
+static int mode_to_mg[8][2] = {
+	{ 0, 0 },
+	{ BIT_TO_8G, BIT_TO_2G },
+	{ BIT_TO_8G, BIT_TO_2G },
+	{ BIT_TO_8G, BIT_TO_8G },
+	{ BIT_TO_8G, BIT_TO_8G },
+	{ BIT_TO_8G, BIT_TO_2G },
+	{ BIT_TO_8G, BIT_TO_2G },
+	{ 0, 0},
+};
+
+static void decode_mg(struct cma3000_accl_data *data, int *datax,
+				int *datay, int *dataz)
+{
+	/* Data in 2's complement, convert to mg */
+	*datax = ((s8)*datax) * data->bit_to_mg;
+	*datay = ((s8)*datay) * data->bit_to_mg;
+	*dataz = ((s8)*dataz) * data->bit_to_mg;
+}
+
+static irqreturn_t cma3000_thread_irq(int irq, void *dev_id)
+{
+	struct cma3000_accl_data *data = dev_id;
+	int datax, datay, dataz, intr_status;
+	u8 ctrl, mode, range;
+
+	intr_status = CMA3000_READ(data, CMA3000_INTSTATUS, "interrupt status");
+	if (intr_status < 0)
+		return IRQ_NONE;
+
+	/* Check if free fall is detected, report immediately */
+	if (intr_status & CMA3000_INTSTATUS_FFDET) {
+		input_report_abs(data->input_dev, ABS_MISC, 1);
+		input_sync(data->input_dev);
+	} else {
+		input_report_abs(data->input_dev, ABS_MISC, 0);
+	}
+
+	datax = CMA3000_READ(data, CMA3000_DOUTX, "X");
+	datay = CMA3000_READ(data, CMA3000_DOUTY, "Y");
+	dataz = CMA3000_READ(data, CMA3000_DOUTZ, "Z");
+
+	ctrl = CMA3000_READ(data, CMA3000_CTRL, "ctrl");
+	mode = (ctrl & CMA3000_MODEMASK) >> 1;
+	range = (ctrl & CMA3000_GRANGEMASK) >> 7;
+
+	data->bit_to_mg = mode_to_mg[mode][range];
+
+	/* Interrupt not for this device */
+	if (data->bit_to_mg == 0)
+		return IRQ_NONE;
+
+	/* Decode register values to milli g */
+	decode_mg(data, &datax, &datay, &dataz);
+
+	input_report_abs(data->input_dev, ABS_X, datax);
+	input_report_abs(data->input_dev, ABS_Y, datay);
+	input_report_abs(data->input_dev, ABS_Z, dataz);
+	input_sync(data->input_dev);
+
+	return IRQ_HANDLED;
+}
+
+static int cma3000_reset(struct cma3000_accl_data *data)
+{
+	int val;
+
+	/* Reset sequence */
+	CMA3000_SET(data, CMA3000_RSTR, 0x02, "Reset");
+	CMA3000_SET(data, CMA3000_RSTR, 0x0A, "Reset");
+	CMA3000_SET(data, CMA3000_RSTR, 0x04, "Reset");
+
+	/* Settling time delay */
+	mdelay(10);
+
+	val = CMA3000_READ(data, CMA3000_STATUS, "Status");
+	if (val < 0) {
+		dev_err(data->dev, "Reset failed\n");
+		return val;
+	}
+
+	if (val & CMA3000_STATUS_PERR) {
+		dev_err(data->dev, "Parity Error\n");
+		return -EIO;
+	}
+
+	return 0;
+}
+
+static int cma3000_poweron(struct cma3000_accl_data *data)
+{
+	const struct cma3000_platform_data *pdata = data->pdata;
+	u8 ctrl = 0;
+	int ret;
+
+	if (data->g_range == CMARANGE_2G) {
+		ctrl = (data->mode << 1) | CMA3000_RANGE2G;
+	} else if (data->g_range == CMARANGE_8G) {
+		ctrl = (data->mode << 1) | CMA3000_RANGE8G;
+	} else {
+		dev_info(data->dev,
+			 "Invalid G range specified, assuming 8G\n");
+		ctrl = (data->mode << 1) | CMA3000_RANGE8G;
+	}
+
+	ctrl |= data->bus_ops->ctrl_mod;
+
+	CMA3000_SET(data, CMA3000_MDTHR, pdata->mdthr,
+		    "Motion Detect Threshold");
+	CMA3000_SET(data, CMA3000_MDFFTMR, pdata->mdfftmr,
+		    "Time register");
+	CMA3000_SET(data, CMA3000_FFTHR, pdata->ffthr,
+		    "Free fall threshold");
+	ret = CMA3000_SET(data, CMA3000_CTRL, ctrl, "Mode setting");
+	if (ret < 0)
+		return -EIO;
+
+	msleep(CMA3000_SETDELAY);
+
+	return 0;
+}
+
+static int cma3000_poweroff(struct cma3000_accl_data *data)
+{
+	int ret;
+
+	ret = CMA3000_SET(data, CMA3000_CTRL, CMAMODE_POFF, "Mode setting");
+	msleep(CMA3000_SETDELAY);
+
+	return ret;
+}
+
+static int cma3000_open(struct input_dev *input_dev)
+{
+	struct cma3000_accl_data *data = input_get_drvdata(input_dev);
+
+	mutex_lock(&data->mutex);
+
+	if (!data->suspended)
+		cma3000_poweron(data);
+
+	data->opened = true;
+
+	mutex_unlock(&data->mutex);
+
+	return 0;
+}
+
+static void cma3000_close(struct input_dev *input_dev)
+{
+	struct cma3000_accl_data *data = input_get_drvdata(input_dev);
+
+	mutex_lock(&data->mutex);
+
+	if (!data->suspended)
+		cma3000_poweroff(data);
+
+	data->opened = false;
+
+	mutex_unlock(&data->mutex);
+}
+
+void cma3000_suspend(struct cma3000_accl_data *data)
+{
+	mutex_lock(&data->mutex);
+
+	if (!data->suspended && data->opened)
+		cma3000_poweroff(data);
+
+	data->suspended = true;
+
+	mutex_unlock(&data->mutex);
+}
+EXPORT_SYMBOL(cma3000_suspend);
+
+
+void cma3000_resume(struct cma3000_accl_data *data)
+{
+	mutex_lock(&data->mutex);
+
+	if (data->suspended && data->opened)
+		cma3000_poweron(data);
+
+	data->suspended = false;
+
+	mutex_unlock(&data->mutex);
+}
+EXPORT_SYMBOL(cma3000_resume);
+
+struct cma3000_accl_data *cma3000_init(struct device *dev, int irq,
+				       const struct cma3000_bus_ops *bops)
+{
+	const struct cma3000_platform_data *pdata = dev_get_platdata(dev);
+	struct cma3000_accl_data *data;
+	struct input_dev *input_dev;
+	int rev;
+	int error;
+
+	if (!pdata) {
+		dev_err(dev, "platform data not found\n");
+		error = -EINVAL;
+		goto err_out;
+	}
+
+
+	/* if no IRQ return error */
+	if (irq == 0) {
+		error = -EINVAL;
+		goto err_out;
+	}
+
+	data = kzalloc(sizeof(struct cma3000_accl_data), GFP_KERNEL);
+	input_dev = input_allocate_device();
+	if (!data || !input_dev) {
+		error = -ENOMEM;
+		goto err_free_mem;
+	}
+
+	data->dev = dev;
+	data->input_dev = input_dev;
+	data->bus_ops = bops;
+	data->pdata = pdata;
+	data->irq = irq;
+	mutex_init(&data->mutex);
+
+	data->mode = pdata->mode;
+	if (data->mode > CMAMODE_POFF) {
+		data->mode = CMAMODE_MOTDET;
+		dev_warn(dev,
+			 "Invalid mode specified, assuming Motion Detect\n");
+	}
+
+	data->g_range = pdata->g_range;
+	if (data->g_range != CMARANGE_2G && data->g_range != CMARANGE_8G) {
+		dev_info(dev,
+			 "Invalid G range specified, assuming 8G\n");
+		data->g_range = CMARANGE_8G;
+	}
+
+	input_dev->name = "cma3000-accelerometer";
+	input_dev->id.bustype = bops->bustype;
+	input_dev->open = cma3000_open;
+	input_dev->close = cma3000_close;
+
+	 __set_bit(EV_ABS, input_dev->evbit);
+
+	input_set_abs_params(input_dev, ABS_X,
+			-data->g_range, data->g_range, pdata->fuzz_x, 0);
+	input_set_abs_params(input_dev, ABS_Y,
+			-data->g_range, data->g_range, pdata->fuzz_y, 0);
+	input_set_abs_params(input_dev, ABS_Z,
+			-data->g_range, data->g_range, pdata->fuzz_z, 0);
+	input_set_abs_params(input_dev, ABS_MISC, 0, 1, 0, 0);
+
+	input_set_drvdata(input_dev, data);
+
+	error = cma3000_reset(data);
+	if (error)
+		goto err_free_mem;
+
+	rev = CMA3000_READ(data, CMA3000_REVID, "Revid");
+	if (rev < 0) {
+		error = rev;
+		goto err_free_mem;
+	}
+
+	pr_info("CMA3000 Accelerometer: Revision %x\n", rev);
+
+	error = request_threaded_irq(irq, NULL, cma3000_thread_irq,
+				     pdata->irqflags | IRQF_ONESHOT,
+				     "cma3000_d0x", data);
+	if (error) {
+		dev_err(dev, "request_threaded_irq failed\n");
+		goto err_free_mem;
+	}
+
+	error = input_register_device(data->input_dev);
+	if (error) {
+		dev_err(dev, "Unable to register input device\n");
+		goto err_free_irq;
+	}
+
+	return data;
+
+err_free_irq:
+	free_irq(irq, data);
+err_free_mem:
+	input_free_device(input_dev);
+	kfree(data);
+err_out:
+	return ERR_PTR(error);
+}
+EXPORT_SYMBOL(cma3000_init);
+
+void cma3000_exit(struct cma3000_accl_data *data)
+{
+	free_irq(data->irq, data);
+	input_unregister_device(data->input_dev);
+	kfree(data);
+}
+EXPORT_SYMBOL(cma3000_exit);
+
+MODULE_DESCRIPTION("CMA3000-D0x Accelerometer Driver");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Hemanth V <hemanthv@ti.com>");
diff --git a/drivers/input/misc/cma3000_d0x.h b/drivers/input/misc/cma3000_d0x.h
new file mode 100644
index 000000000..05ad42a56
--- /dev/null
+++ b/drivers/input/misc/cma3000_d0x.h
@@ -0,0 +1,31 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * VTI CMA3000_D0x Accelerometer driver
+ *
+ * Copyright (C) 2010 Texas Instruments
+ * Author: Hemanth V <hemanthv@ti.com>
+ */
+
+#ifndef _INPUT_CMA3000_H
+#define _INPUT_CMA3000_H
+
+#include <linux/types.h>
+#include <linux/input.h>
+
+struct device;
+struct cma3000_accl_data;
+
+struct cma3000_bus_ops {
+	u16 bustype;
+	u8 ctrl_mod;
+	int (*read)(struct device *, u8, char *);
+	int (*write)(struct device *, u8, u8, char *);
+};
+
+struct cma3000_accl_data *cma3000_init(struct device *dev, int irq,
+					const struct cma3000_bus_ops *bops);
+void cma3000_exit(struct cma3000_accl_data *);
+void cma3000_suspend(struct cma3000_accl_data *);
+void cma3000_resume(struct cma3000_accl_data *);
+
+#endif
diff --git a/drivers/input/misc/cma3000_d0x_i2c.c b/drivers/input/misc/cma3000_d0x_i2c.c
new file mode 100644
index 000000000..3b23210c4
--- /dev/null
+++ b/drivers/input/misc/cma3000_d0x_i2c.c
@@ -0,0 +1,118 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Implements I2C interface for VTI CMA300_D0x Accelerometer driver
+ *
+ * Copyright (C) 2010 Texas Instruments
+ * Author: Hemanth V <hemanthv@ti.com>
+ */
+
+#include <linux/module.h>
+#include <linux/i2c.h>
+#include <linux/input/cma3000.h>
+#include "cma3000_d0x.h"
+
+static int cma3000_i2c_set(struct device *dev,
+			   u8 reg, u8 val, char *msg)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	int ret;
+
+	ret = i2c_smbus_write_byte_data(client, reg, val);
+	if (ret < 0)
+		dev_err(&client->dev,
+			"%s failed (%s, %d)\n", __func__, msg, ret);
+	return ret;
+}
+
+static int cma3000_i2c_read(struct device *dev, u8 reg, char *msg)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	int ret;
+
+	ret = i2c_smbus_read_byte_data(client, reg);
+	if (ret < 0)
+		dev_err(&client->dev,
+			"%s failed (%s, %d)\n", __func__, msg, ret);
+	return ret;
+}
+
+static const struct cma3000_bus_ops cma3000_i2c_bops = {
+	.bustype	= BUS_I2C,
+#define CMA3000_BUSI2C     (0 << 4)
+	.ctrl_mod	= CMA3000_BUSI2C,
+	.read		= cma3000_i2c_read,
+	.write		= cma3000_i2c_set,
+};
+
+static int cma3000_i2c_probe(struct i2c_client *client,
+					const struct i2c_device_id *id)
+{
+	struct cma3000_accl_data *data;
+
+	data = cma3000_init(&client->dev, client->irq, &cma3000_i2c_bops);
+	if (IS_ERR(data))
+		return PTR_ERR(data);
+
+	i2c_set_clientdata(client, data);
+
+	return 0;
+}
+
+static void cma3000_i2c_remove(struct i2c_client *client)
+{
+	struct cma3000_accl_data *data = i2c_get_clientdata(client);
+
+	cma3000_exit(data);
+}
+
+#ifdef CONFIG_PM
+static int cma3000_i2c_suspend(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct cma3000_accl_data *data = i2c_get_clientdata(client);
+
+	cma3000_suspend(data);
+
+	return 0;
+}
+
+static int cma3000_i2c_resume(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct cma3000_accl_data *data = i2c_get_clientdata(client);
+
+	cma3000_resume(data);
+
+	return 0;
+}
+
+static const struct dev_pm_ops cma3000_i2c_pm_ops = {
+	.suspend	= cma3000_i2c_suspend,
+	.resume		= cma3000_i2c_resume,
+};
+#endif
+
+static const struct i2c_device_id cma3000_i2c_id[] = {
+	{ "cma3000_d01", 0 },
+	{ },
+};
+
+MODULE_DEVICE_TABLE(i2c, cma3000_i2c_id);
+
+static struct i2c_driver cma3000_i2c_driver = {
+	.probe		= cma3000_i2c_probe,
+	.remove		= cma3000_i2c_remove,
+	.id_table	= cma3000_i2c_id,
+	.driver = {
+		.name	= "cma3000_i2c_accl",
+#ifdef CONFIG_PM
+		.pm	= &cma3000_i2c_pm_ops,
+#endif
+	},
+};
+
+module_i2c_driver(cma3000_i2c_driver);
+
+MODULE_DESCRIPTION("CMA3000-D0x Accelerometer I2C Driver");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Hemanth V <hemanthv@ti.com>");
diff --git a/drivers/input/misc/cobalt_btns.c b/drivers/input/misc/cobalt_btns.c
new file mode 100644
index 000000000..b1624f541
--- /dev/null
+++ b/drivers/input/misc/cobalt_btns.c
@@ -0,0 +1,128 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *  Cobalt button interface driver.
+ *
+ *  Copyright (C) 2007-2008  Yoichi Yuasa <yuasa@linux-mips.org>
+ */
+#include <linux/input.h>
+#include <linux/io.h>
+#include <linux/ioport.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+
+#define BUTTONS_POLL_INTERVAL	30	/* msec */
+#define BUTTONS_COUNT_THRESHOLD	3
+#define BUTTONS_STATUS_MASK	0xfe000000
+
+static const unsigned short cobalt_map[] = {
+	KEY_RESERVED,
+	KEY_RESTART,
+	KEY_LEFT,
+	KEY_UP,
+	KEY_DOWN,
+	KEY_RIGHT,
+	KEY_ENTER,
+	KEY_SELECT
+};
+
+struct buttons_dev {
+	unsigned short keymap[ARRAY_SIZE(cobalt_map)];
+	int count[ARRAY_SIZE(cobalt_map)];
+	void __iomem *reg;
+};
+
+static void handle_buttons(struct input_dev *input)
+{
+	struct buttons_dev *bdev = input_get_drvdata(input);
+	uint32_t status;
+	int i;
+
+	status = ~readl(bdev->reg) >> 24;
+
+	for (i = 0; i < ARRAY_SIZE(bdev->keymap); i++) {
+		if (status & (1U << i)) {
+			if (++bdev->count[i] == BUTTONS_COUNT_THRESHOLD) {
+				input_event(input, EV_MSC, MSC_SCAN, i);
+				input_report_key(input, bdev->keymap[i], 1);
+				input_sync(input);
+			}
+		} else {
+			if (bdev->count[i] >= BUTTONS_COUNT_THRESHOLD) {
+				input_event(input, EV_MSC, MSC_SCAN, i);
+				input_report_key(input, bdev->keymap[i], 0);
+				input_sync(input);
+			}
+			bdev->count[i] = 0;
+		}
+	}
+}
+
+static int cobalt_buttons_probe(struct platform_device *pdev)
+{
+	struct buttons_dev *bdev;
+	struct input_dev *input;
+	struct resource *res;
+	int error, i;
+
+	bdev = devm_kzalloc(&pdev->dev, sizeof(*bdev), GFP_KERNEL);
+	if (!bdev)
+		return -ENOMEM;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!res)
+		return -EBUSY;
+
+	bdev->reg = devm_ioremap(&pdev->dev, res->start, resource_size(res));
+	if (!bdev->reg)
+		return -ENOMEM;
+
+	memcpy(bdev->keymap, cobalt_map, sizeof(bdev->keymap));
+
+	input = devm_input_allocate_device(&pdev->dev);
+	if (!input)
+		return -ENOMEM;
+
+	input_set_drvdata(input, bdev);
+
+	input->name = "Cobalt buttons";
+	input->phys = "cobalt/input0";
+	input->id.bustype = BUS_HOST;
+
+	input->keycode = bdev->keymap;
+	input->keycodemax = ARRAY_SIZE(bdev->keymap);
+	input->keycodesize = sizeof(unsigned short);
+
+	input_set_capability(input, EV_MSC, MSC_SCAN);
+	__set_bit(EV_KEY, input->evbit);
+	for (i = 0; i < ARRAY_SIZE(cobalt_map); i++)
+		__set_bit(bdev->keymap[i], input->keybit);
+	__clear_bit(KEY_RESERVED, input->keybit);
+
+
+	error = input_setup_polling(input, handle_buttons);
+	if (error)
+		return error;
+
+	input_set_poll_interval(input, BUTTONS_POLL_INTERVAL);
+
+	error = input_register_device(input);
+	if (error)
+		return error;
+
+	return 0;
+}
+
+MODULE_AUTHOR("Yoichi Yuasa <yuasa@linux-mips.org>");
+MODULE_DESCRIPTION("Cobalt button interface driver");
+MODULE_LICENSE("GPL");
+/* work with hotplug and coldplug */
+MODULE_ALIAS("platform:Cobalt buttons");
+
+static struct platform_driver cobalt_buttons_driver = {
+	.probe	= cobalt_buttons_probe,
+	.driver	= {
+		.name	= "Cobalt buttons",
+	},
+};
+module_platform_driver(cobalt_buttons_driver);
diff --git a/drivers/input/misc/cpcap-pwrbutton.c b/drivers/input/misc/cpcap-pwrbutton.c
new file mode 100644
index 000000000..879790bbf
--- /dev/null
+++ b/drivers/input/misc/cpcap-pwrbutton.c
@@ -0,0 +1,120 @@
+/**
+ * CPCAP Power Button Input Driver
+ *
+ * Copyright (C) 2017 Sebastian Reichel <sre@kernel.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License. See the file "COPYING" in the main directory of this
+ * archive for more details.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/regmap.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/mfd/motorola-cpcap.h>
+
+#define CPCAP_IRQ_ON 23
+#define CPCAP_IRQ_ON_BITMASK (1 << (CPCAP_IRQ_ON % 16))
+
+struct cpcap_power_button {
+	struct regmap *regmap;
+	struct input_dev *idev;
+	struct device *dev;
+};
+
+static irqreturn_t powerbutton_irq(int irq, void *_button)
+{
+	struct cpcap_power_button *button = _button;
+	int val;
+
+	val = cpcap_sense_virq(button->regmap, irq);
+	if (val < 0) {
+		dev_err(button->dev, "irq read failed: %d", val);
+		return IRQ_HANDLED;
+	}
+
+	pm_wakeup_event(button->dev, 0);
+	input_report_key(button->idev, KEY_POWER, val);
+	input_sync(button->idev);
+
+	return IRQ_HANDLED;
+}
+
+static int cpcap_power_button_probe(struct platform_device *pdev)
+{
+	struct cpcap_power_button *button;
+	int irq;
+	int err;
+
+	irq = platform_get_irq(pdev, 0);
+	if (irq < 0)
+		return irq;
+
+	button = devm_kmalloc(&pdev->dev, sizeof(*button), GFP_KERNEL);
+	if (!button)
+		return -ENOMEM;
+
+	button->idev = devm_input_allocate_device(&pdev->dev);
+	if (!button->idev)
+		return -ENOMEM;
+
+	button->regmap = dev_get_regmap(pdev->dev.parent, NULL);
+	if (!button->regmap)
+		return -ENODEV;
+
+	button->dev = &pdev->dev;
+
+	button->idev->name = "cpcap-pwrbutton";
+	button->idev->phys = "cpcap-pwrbutton/input0";
+	input_set_capability(button->idev, EV_KEY, KEY_POWER);
+
+	err = devm_request_threaded_irq(&pdev->dev, irq, NULL,
+		powerbutton_irq, IRQF_ONESHOT, "cpcap_pwrbutton", button);
+	if (err < 0) {
+		dev_err(&pdev->dev, "IRQ request failed: %d\n", err);
+		return err;
+	}
+
+	err = input_register_device(button->idev);
+	if (err) {
+		dev_err(&pdev->dev, "Input register failed: %d\n", err);
+		return err;
+	}
+
+	device_init_wakeup(&pdev->dev, true);
+
+	return 0;
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id cpcap_pwrbutton_dt_match_table[] = {
+	{ .compatible = "motorola,cpcap-pwrbutton" },
+	{},
+};
+MODULE_DEVICE_TABLE(of, cpcap_pwrbutton_dt_match_table);
+#endif
+
+static struct platform_driver cpcap_power_button_driver = {
+	.probe		= cpcap_power_button_probe,
+	.driver		= {
+		.name	= "cpcap-pwrbutton",
+		.of_match_table = of_match_ptr(cpcap_pwrbutton_dt_match_table),
+	},
+};
+module_platform_driver(cpcap_power_button_driver);
+
+MODULE_ALIAS("platform:cpcap-pwrbutton");
+MODULE_DESCRIPTION("CPCAP Power Button");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Sebastian Reichel <sre@kernel.org>");
diff --git a/drivers/input/misc/da7280.c b/drivers/input/misc/da7280.c
new file mode 100644
index 000000000..b08610d6e
--- /dev/null
+++ b/drivers/input/misc/da7280.c
@@ -0,0 +1,1332 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * DA7280 Haptic device driver
+ *
+ * Copyright (c) 2020 Dialog Semiconductor.
+ * Author: Roy Im <Roy.Im.Opensource@diasemi.com>
+ */
+
+#include <linux/bitfield.h>
+#include <linux/bitops.h>
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/pwm.h>
+#include <linux/regmap.h>
+#include <linux/workqueue.h>
+#include <linux/uaccess.h>
+
+/* Registers */
+#define DA7280_IRQ_EVENT1			0x03
+#define DA7280_IRQ_EVENT_WARNING_DIAG		0x04
+#define DA7280_IRQ_EVENT_SEQ_DIAG		0x05
+#define DA7280_IRQ_STATUS1			0x06
+#define DA7280_IRQ_MASK1			0x07
+#define DA7280_FRQ_LRA_PER_H			0x0A
+#define DA7280_FRQ_LRA_PER_L			0x0B
+#define DA7280_ACTUATOR1			0x0C
+#define DA7280_ACTUATOR2			0x0D
+#define DA7280_ACTUATOR3			0x0E
+#define DA7280_CALIB_V2I_H			0x0F
+#define DA7280_CALIB_V2I_L			0x10
+#define DA7280_TOP_CFG1				0x13
+#define DA7280_TOP_CFG2				0x14
+#define DA7280_TOP_CFG4				0x16
+#define DA7280_TOP_INT_CFG1			0x17
+#define DA7280_TOP_CTL1				0x22
+#define DA7280_TOP_CTL2				0x23
+#define DA7280_SEQ_CTL2				0x28
+#define DA7280_GPI_0_CTL			0x29
+#define DA7280_GPI_1_CTL			0x2A
+#define DA7280_GPI_2_CTL			0x2B
+#define DA7280_MEM_CTL1				0x2C
+#define DA7280_MEM_CTL2				0x2D
+#define DA7280_TOP_CFG5				0x6E
+#define DA7280_IRQ_MASK2			0x83
+#define DA7280_SNP_MEM_99			0xE7
+
+/* Register field */
+
+/* DA7280_IRQ_EVENT1 (Address 0x03) */
+#define DA7280_E_SEQ_CONTINUE_MASK		BIT(0)
+#define DA7280_E_UVLO_MASK			BIT(1)
+#define DA7280_E_SEQ_DONE_MASK			BIT(2)
+#define DA7280_E_OVERTEMP_CRIT_MASK		BIT(3)
+#define DA7280_E_SEQ_FAULT_MASK			BIT(4)
+#define DA7280_E_WARNING_MASK			BIT(5)
+#define DA7280_E_ACTUATOR_FAULT_MASK		BIT(6)
+#define DA7280_E_OC_FAULT_MASK			BIT(7)
+
+/* DA7280_IRQ_EVENT_WARNING_DIAG (Address 0x04) */
+#define DA7280_E_OVERTEMP_WARN_MASK             BIT(3)
+#define DA7280_E_MEM_TYPE_MASK                  BIT(4)
+#define DA7280_E_LIM_DRIVE_ACC_MASK             BIT(6)
+#define DA7280_E_LIM_DRIVE_MASK                 BIT(7)
+
+/* DA7280_IRQ_EVENT_PAT_DIAG (Address 0x05) */
+#define DA7280_E_PWM_FAULT_MASK			BIT(5)
+#define DA7280_E_MEM_FAULT_MASK			BIT(6)
+#define DA7280_E_SEQ_ID_FAULT_MASK		BIT(7)
+
+/* DA7280_IRQ_STATUS1 (Address 0x06) */
+#define DA7280_STA_SEQ_CONTINUE_MASK		BIT(0)
+#define DA7280_STA_UVLO_VBAT_OK_MASK		BIT(1)
+#define DA7280_STA_SEQ_DONE_MASK		BIT(2)
+#define DA7280_STA_OVERTEMP_CRIT_MASK		BIT(3)
+#define DA7280_STA_SEQ_FAULT_MASK		BIT(4)
+#define DA7280_STA_WARNING_MASK			BIT(5)
+#define DA7280_STA_ACTUATOR_MASK		BIT(6)
+#define DA7280_STA_OC_MASK			BIT(7)
+
+/* DA7280_IRQ_MASK1 (Address 0x07) */
+#define DA7280_SEQ_CONTINUE_M_MASK		BIT(0)
+#define DA7280_E_UVLO_M_MASK			BIT(1)
+#define DA7280_SEQ_DONE_M_MASK			BIT(2)
+#define DA7280_OVERTEMP_CRIT_M_MASK		BIT(3)
+#define DA7280_SEQ_FAULT_M_MASK			BIT(4)
+#define DA7280_WARNING_M_MASK			BIT(5)
+#define DA7280_ACTUATOR_M_MASK			BIT(6)
+#define DA7280_OC_M_MASK			BIT(7)
+
+/* DA7280_ACTUATOR3 (Address 0x0e) */
+#define DA7280_IMAX_MASK			GENMASK(4, 0)
+
+/* DA7280_TOP_CFG1 (Address 0x13) */
+#define DA7280_AMP_PID_EN_MASK			BIT(0)
+#define DA7280_RAPID_STOP_EN_MASK		BIT(1)
+#define DA7280_ACCELERATION_EN_MASK		BIT(2)
+#define DA7280_FREQ_TRACK_EN_MASK		BIT(3)
+#define DA7280_BEMF_SENSE_EN_MASK		BIT(4)
+#define DA7280_ACTUATOR_TYPE_MASK		BIT(5)
+
+/* DA7280_TOP_CFG2 (Address 0x14) */
+#define DA7280_FULL_BRAKE_THR_MASK		GENMASK(3, 0)
+#define DA7280_MEM_DATA_SIGNED_MASK		BIT(4)
+
+/* DA7280_TOP_CFG4 (Address 0x16) */
+#define DA7280_TST_CALIB_IMPEDANCE_DIS_MASK	BIT(6)
+#define DA7280_V2I_FACTOR_FREEZE_MASK		BIT(7)
+
+/* DA7280_TOP_INT_CFG1 (Address 0x17) */
+#define DA7280_BEMF_FAULT_LIM_MASK		GENMASK(1, 0)
+
+/* DA7280_TOP_CTL1 (Address 0x22) */
+#define DA7280_OPERATION_MODE_MASK		GENMASK(2, 0)
+#define DA7280_STANDBY_EN_MASK			BIT(3)
+#define DA7280_SEQ_START_MASK			BIT(4)
+
+/* DA7280_SEQ_CTL2 (Address 0x28) */
+#define DA7280_PS_SEQ_ID_MASK			GENMASK(3, 0)
+#define DA7280_PS_SEQ_LOOP_MASK			GENMASK(7, 4)
+
+/* DA7280_GPIO_0_CTL (Address 0x29) */
+#define DA7280_GPI0_POLARITY_MASK		GENMASK(1, 0)
+#define DA7280_GPI0_MODE_MASK			BIT(2)
+#define DA7280_GPI0_SEQUENCE_ID_MASK		GENMASK(6, 3)
+
+/* DA7280_GPIO_1_CTL (Address 0x2a) */
+#define DA7280_GPI1_POLARITY_MASK		GENMASK(1, 0)
+#define DA7280_GPI1_MODE_MASK			BIT(2)
+#define DA7280_GPI1_SEQUENCE_ID_MASK		GENMASK(6, 3)
+
+/* DA7280_GPIO_2_CTL (Address 0x2b) */
+#define DA7280_GPI2_POLARITY_MASK		GENMASK(1, 0)
+#define DA7280_GPI2_MODE_MASK			BIT(2)
+#define DA7280_GPI2_SEQUENCE_ID_MASK		GENMASK(6, 3)
+
+/* DA7280_MEM_CTL2 (Address 0x2d) */
+#define DA7280_WAV_MEM_LOCK_MASK		BIT(7)
+
+/* DA7280_TOP_CFG5 (Address 0x6e) */
+#define DA7280_V2I_FACTOR_OFFSET_EN_MASK	BIT(0)
+
+/* DA7280_IRQ_MASK2 (Address 0x83) */
+#define DA7280_ADC_SAT_M_MASK			BIT(7)
+
+/* Controls */
+
+#define DA7280_VOLTAGE_RATE_MAX			6000000
+#define DA7280_VOLTAGE_RATE_STEP		23400
+#define DA7280_NOMMAX_DFT			0x6B
+#define DA7280_ABSMAX_DFT			0x78
+
+#define DA7280_IMPD_MAX				1500000000
+#define DA7280_IMPD_DEFAULT			22000000
+
+#define DA7280_IMAX_DEFAULT			0x0E
+#define DA7280_IMAX_STEP			7200
+#define DA7280_IMAX_LIMIT			252000
+
+#define DA7280_RESONT_FREQH_DFT			0x39
+#define DA7280_RESONT_FREQL_DFT			0x32
+#define DA7280_MIN_RESONAT_FREQ_HZ		50
+#define DA7280_MAX_RESONAT_FREQ_HZ		300
+
+#define DA7280_SEQ_ID_MAX			15
+#define DA7280_SEQ_LOOP_MAX			15
+#define DA7280_GPI_SEQ_ID_DFT			0
+#define DA7280_GPI_SEQ_ID_MAX			2
+
+#define DA7280_SNP_MEM_SIZE			100
+#define DA7280_SNP_MEM_MAX			DA7280_SNP_MEM_99
+
+#define DA7280_IRQ_NUM				3
+
+#define DA7280_SKIP_INIT			0x100
+
+#define DA7280_FF_EFFECT_COUNT_MAX		15
+
+/* Maximum gain is 0x7fff for PWM mode */
+#define DA7280_MAX_MAGNITUDE_SHIFT		15
+
+enum da7280_haptic_dev_t {
+	DA7280_LRA	= 0,
+	DA7280_ERM_BAR	= 1,
+	DA7280_ERM_COIN	= 2,
+	DA7280_DEV_MAX,
+};
+
+enum da7280_op_mode {
+	DA7280_INACTIVE		= 0,
+	DA7280_DRO_MODE		= 1,
+	DA7280_PWM_MODE		= 2,
+	DA7280_RTWM_MODE	= 3,
+	DA7280_ETWM_MODE	= 4,
+	DA7280_OPMODE_MAX,
+};
+
+#define DA7280_FF_CONSTANT_DRO			1
+#define DA7280_FF_PERIODIC_PWM			2
+#define DA7280_FF_PERIODIC_RTWM			1
+#define DA7280_FF_PERIODIC_ETWM			2
+
+#define DA7280_FF_PERIODIC_MODE			DA7280_RTWM_MODE
+#define DA7280_FF_CONSTANT_MODE			DA7280_DRO_MODE
+
+enum da7280_custom_effect_param {
+	DA7280_CUSTOM_SEQ_ID_IDX	= 0,
+	DA7280_CUSTOM_SEQ_LOOP_IDX	= 1,
+	DA7280_CUSTOM_DATA_LEN		= 2,
+};
+
+enum da7280_custom_gpi_effect_param {
+	DA7280_CUSTOM_GPI_SEQ_ID_IDX	= 0,
+	DA7280_CUSTOM_GPI_NUM_IDX	= 2,
+	DA7280_CUSTOM_GP_DATA_LEN	= 3,
+};
+
+struct da7280_gpi_ctl {
+	u8 seq_id;
+	u8 mode;
+	u8 polarity;
+};
+
+struct da7280_haptic {
+	struct regmap *regmap;
+	struct input_dev *input_dev;
+	struct device *dev;
+	struct i2c_client *client;
+	struct pwm_device *pwm_dev;
+
+	bool legacy;
+	struct work_struct work;
+	int val;
+	u16 gain;
+	s16 level;
+
+	u8 dev_type;
+	u8 op_mode;
+	u8 const_op_mode;
+	u8 periodic_op_mode;
+	u16 nommax;
+	u16 absmax;
+	u32 imax;
+	u32 impd;
+	u32 resonant_freq_h;
+	u32 resonant_freq_l;
+	bool bemf_sense_en;
+	bool freq_track_en;
+	bool acc_en;
+	bool rapid_stop_en;
+	bool amp_pid_en;
+	u8 ps_seq_id;
+	u8 ps_seq_loop;
+	struct da7280_gpi_ctl gpi_ctl[3];
+	bool mem_update;
+	u8 snp_mem[DA7280_SNP_MEM_SIZE];
+	bool active;
+	bool suspended;
+};
+
+static bool da7280_volatile_register(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case DA7280_IRQ_EVENT1:
+	case DA7280_IRQ_EVENT_WARNING_DIAG:
+	case DA7280_IRQ_EVENT_SEQ_DIAG:
+	case DA7280_IRQ_STATUS1:
+	case DA7280_TOP_CTL1:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static const struct regmap_config da7280_haptic_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+	.max_register = DA7280_SNP_MEM_MAX,
+	.volatile_reg = da7280_volatile_register,
+};
+
+static int da7280_haptic_mem_update(struct da7280_haptic *haptics)
+{
+	unsigned int val;
+	int error;
+
+	/* The patterns should be updated when haptic is not working */
+	error = regmap_read(haptics->regmap, DA7280_IRQ_STATUS1, &val);
+	if (error)
+		return error;
+	if (val & DA7280_STA_WARNING_MASK) {
+		dev_warn(haptics->dev,
+			 "Warning! Please check HAPTIC status.\n");
+		return -EBUSY;
+	}
+
+	/* Patterns are not updated if the lock bit is enabled */
+	val = 0;
+	error = regmap_read(haptics->regmap, DA7280_MEM_CTL2, &val);
+	if (error)
+		return error;
+	if (~val & DA7280_WAV_MEM_LOCK_MASK) {
+		dev_warn(haptics->dev, "Please unlock the bit first\n");
+		return -EACCES;
+	}
+
+	/* Set to Inactive mode to make sure safety */
+	error = regmap_update_bits(haptics->regmap,
+				   DA7280_TOP_CTL1,
+				   DA7280_OPERATION_MODE_MASK,
+				   0);
+	if (error)
+		return error;
+
+	error = regmap_read(haptics->regmap, DA7280_MEM_CTL1, &val);
+	if (error)
+		return error;
+
+	return regmap_bulk_write(haptics->regmap, val, haptics->snp_mem,
+				 DA7280_SNP_MEM_MAX - val + 1);
+}
+
+static int da7280_haptic_set_pwm(struct da7280_haptic *haptics, bool enabled)
+{
+	struct pwm_state state;
+	u64 period_mag_multi;
+	int error;
+
+	if (!haptics->gain && enabled) {
+		dev_err(haptics->dev, "Unable to enable pwm with 0 gain\n");
+		return -EINVAL;
+	}
+
+	pwm_get_state(haptics->pwm_dev, &state);
+	state.enabled = enabled;
+	if (enabled) {
+		period_mag_multi = (u64)state.period * haptics->gain;
+		period_mag_multi >>= DA7280_MAX_MAGNITUDE_SHIFT;
+
+		/*
+		 * The interpretation of duty cycle depends on the acc_en,
+		 * it should be between 50% and 100% for acc_en = 0.
+		 * See datasheet 'PWM mode' section.
+		 */
+		if (!haptics->acc_en) {
+			period_mag_multi += state.period;
+			period_mag_multi /= 2;
+		}
+
+		state.duty_cycle = period_mag_multi;
+	}
+
+	error = pwm_apply_state(haptics->pwm_dev, &state);
+	if (error)
+		dev_err(haptics->dev, "Failed to apply pwm state: %d\n", error);
+
+	return error;
+}
+
+static void da7280_haptic_activate(struct da7280_haptic *haptics)
+{
+	int error;
+
+	if (haptics->active)
+		return;
+
+	switch (haptics->op_mode) {
+	case DA7280_DRO_MODE:
+		/* the valid range check when acc_en is enabled */
+		if (haptics->acc_en && haptics->level > 0x7F)
+			haptics->level = 0x7F;
+		else if (haptics->level > 0xFF)
+			haptics->level = 0xFF;
+
+		/* Set level as a % of ACTUATOR_NOMMAX (nommax) */
+		error = regmap_write(haptics->regmap, DA7280_TOP_CTL2,
+				     haptics->level);
+		if (error) {
+			dev_err(haptics->dev,
+				"Failed to set level to %d: %d\n",
+				haptics->level, error);
+			return;
+		}
+		break;
+
+	case DA7280_PWM_MODE:
+		if (da7280_haptic_set_pwm(haptics, true))
+			return;
+		break;
+
+	case DA7280_RTWM_MODE:
+		/*
+		 * The pattern will be played by the PS_SEQ_ID and the
+		 * PS_SEQ_LOOP
+		 */
+		break;
+
+	case DA7280_ETWM_MODE:
+		/*
+		 * The pattern will be played by the GPI[N] state,
+		 * GPI(N)_SEQUENCE_ID and the PS_SEQ_LOOP. See the
+		 * datasheet for the details.
+		 */
+		break;
+
+	default:
+		dev_err(haptics->dev, "Invalid op mode %d\n", haptics->op_mode);
+		return;
+	}
+
+	error = regmap_update_bits(haptics->regmap,
+				   DA7280_TOP_CTL1,
+				   DA7280_OPERATION_MODE_MASK,
+				   haptics->op_mode);
+	if (error) {
+		dev_err(haptics->dev,
+			"Failed to set operation mode: %d", error);
+		return;
+	}
+
+	if (haptics->op_mode == DA7280_PWM_MODE ||
+	    haptics->op_mode == DA7280_RTWM_MODE) {
+		error = regmap_update_bits(haptics->regmap,
+					   DA7280_TOP_CTL1,
+					   DA7280_SEQ_START_MASK,
+					   DA7280_SEQ_START_MASK);
+		if (error) {
+			dev_err(haptics->dev,
+				"Failed to start sequence: %d\n", error);
+			return;
+		}
+	}
+
+	haptics->active = true;
+}
+
+static void da7280_haptic_deactivate(struct da7280_haptic *haptics)
+{
+	int error;
+
+	if (!haptics->active)
+		return;
+
+	/* Set to Inactive mode */
+	error = regmap_update_bits(haptics->regmap,
+				   DA7280_TOP_CTL1,
+				   DA7280_OPERATION_MODE_MASK, 0);
+	if (error) {
+		dev_err(haptics->dev,
+			"Failed to clear operation mode: %d", error);
+		return;
+	}
+
+	switch (haptics->op_mode) {
+	case DA7280_DRO_MODE:
+		error = regmap_write(haptics->regmap,
+				     DA7280_TOP_CTL2, 0);
+		if (error) {
+			dev_err(haptics->dev,
+				"Failed to disable DRO mode: %d\n", error);
+			return;
+		}
+		break;
+
+	case DA7280_PWM_MODE:
+		if (da7280_haptic_set_pwm(haptics, false))
+			return;
+		break;
+
+	case DA7280_RTWM_MODE:
+	case DA7280_ETWM_MODE:
+		error = regmap_update_bits(haptics->regmap,
+					   DA7280_TOP_CTL1,
+					   DA7280_SEQ_START_MASK, 0);
+		if (error) {
+			dev_err(haptics->dev,
+				"Failed to disable RTWM/ETWM mode: %d\n",
+				error);
+			return;
+		}
+		break;
+
+	default:
+		dev_err(haptics->dev, "Invalid op mode %d\n", haptics->op_mode);
+		return;
+	}
+
+	haptics->active = false;
+}
+
+static void da7280_haptic_work(struct work_struct *work)
+{
+	struct da7280_haptic *haptics =
+		container_of(work, struct da7280_haptic, work);
+	int val = haptics->val;
+
+	if (val)
+		da7280_haptic_activate(haptics);
+	else
+		da7280_haptic_deactivate(haptics);
+}
+
+static int da7280_haptics_upload_effect(struct input_dev *dev,
+					struct ff_effect *effect,
+					struct ff_effect *old)
+{
+	struct da7280_haptic *haptics = input_get_drvdata(dev);
+	s16 data[DA7280_SNP_MEM_SIZE] = { 0 };
+	unsigned int val;
+	int tmp, i, num;
+	int error;
+
+	/* The effect should be uploaded when haptic is not working */
+	if (haptics->active)
+		return -EBUSY;
+
+	switch (effect->type) {
+	/* DRO/PWM modes support this type */
+	case FF_CONSTANT:
+		haptics->op_mode = haptics->const_op_mode;
+		if (haptics->op_mode == DA7280_DRO_MODE) {
+			tmp = effect->u.constant.level * 254;
+			haptics->level = tmp / 0x7FFF;
+			break;
+		}
+
+		haptics->gain =	effect->u.constant.level <= 0 ?
+					0 : effect->u.constant.level;
+		break;
+
+	/* RTWM/ETWM modes support this type */
+	case FF_PERIODIC:
+		if (effect->u.periodic.waveform != FF_CUSTOM) {
+			dev_err(haptics->dev,
+				"Device can only accept FF_CUSTOM waveform\n");
+			return -EINVAL;
+		}
+
+		/*
+		 * Load the data and check the length.
+		 * the data will be patterns in this case: 4 < X <= 100,
+		 * and will be saved into the waveform memory inside DA728x.
+		 * If X = 2, the data will be PS_SEQ_ID and PS_SEQ_LOOP.
+		 * If X = 3, the 1st data will be GPIX_SEQUENCE_ID .
+		 */
+		if (effect->u.periodic.custom_len == DA7280_CUSTOM_DATA_LEN)
+			goto set_seq_id_loop;
+
+		if (effect->u.periodic.custom_len == DA7280_CUSTOM_GP_DATA_LEN)
+			goto set_gpix_seq_id;
+
+		if (effect->u.periodic.custom_len < DA7280_CUSTOM_DATA_LEN ||
+		    effect->u.periodic.custom_len > DA7280_SNP_MEM_SIZE) {
+			dev_err(haptics->dev, "Invalid waveform data size\n");
+			return -EINVAL;
+		}
+
+		if (copy_from_user(data, effect->u.periodic.custom_data,
+				   sizeof(s16) *
+				   effect->u.periodic.custom_len))
+			return -EFAULT;
+
+		memset(haptics->snp_mem, 0, DA7280_SNP_MEM_SIZE);
+
+		for (i = 0; i < effect->u.periodic.custom_len; i++) {
+			if (data[i] < 0 || data[i] > 0xff) {
+				dev_err(haptics->dev,
+					"Invalid waveform data %d at offset %d\n",
+					data[i], i);
+				return -EINVAL;
+			}
+			haptics->snp_mem[i] = (u8)data[i];
+		}
+
+		error = da7280_haptic_mem_update(haptics);
+		if (error) {
+			dev_err(haptics->dev,
+				"Failed to upload waveform: %d\n", error);
+			return error;
+		}
+		break;
+
+set_seq_id_loop:
+		if (copy_from_user(data, effect->u.periodic.custom_data,
+				   sizeof(s16) * DA7280_CUSTOM_DATA_LEN))
+			return -EFAULT;
+
+		if (data[DA7280_CUSTOM_SEQ_ID_IDX] < 0 ||
+		    data[DA7280_CUSTOM_SEQ_ID_IDX] > DA7280_SEQ_ID_MAX ||
+		    data[DA7280_CUSTOM_SEQ_LOOP_IDX] < 0 ||
+		    data[DA7280_CUSTOM_SEQ_LOOP_IDX] > DA7280_SEQ_LOOP_MAX) {
+			dev_err(haptics->dev,
+				"Invalid custom id (%d) or loop (%d)\n",
+				data[DA7280_CUSTOM_SEQ_ID_IDX],
+				data[DA7280_CUSTOM_SEQ_LOOP_IDX]);
+			return -EINVAL;
+		}
+
+		haptics->ps_seq_id = data[DA7280_CUSTOM_SEQ_ID_IDX] & 0x0f;
+		haptics->ps_seq_loop = data[DA7280_CUSTOM_SEQ_LOOP_IDX] & 0x0f;
+		haptics->op_mode = haptics->periodic_op_mode;
+
+		val = FIELD_PREP(DA7280_PS_SEQ_ID_MASK, haptics->ps_seq_id) |
+			FIELD_PREP(DA7280_PS_SEQ_LOOP_MASK,
+				   haptics->ps_seq_loop);
+		error = regmap_write(haptics->regmap, DA7280_SEQ_CTL2, val);
+		if (error) {
+			dev_err(haptics->dev,
+				"Failed to update PS sequence: %d\n", error);
+			return error;
+		}
+		break;
+
+set_gpix_seq_id:
+		if (copy_from_user(data, effect->u.periodic.custom_data,
+				   sizeof(s16) * DA7280_CUSTOM_GP_DATA_LEN))
+			return -EFAULT;
+
+		if (data[DA7280_CUSTOM_GPI_SEQ_ID_IDX] < 0 ||
+		    data[DA7280_CUSTOM_GPI_SEQ_ID_IDX] > DA7280_SEQ_ID_MAX ||
+		    data[DA7280_CUSTOM_GPI_NUM_IDX] < 0 ||
+		    data[DA7280_CUSTOM_GPI_NUM_IDX] > DA7280_GPI_SEQ_ID_MAX) {
+			dev_err(haptics->dev,
+				"Invalid custom GPI id (%d) or num (%d)\n",
+				data[DA7280_CUSTOM_GPI_SEQ_ID_IDX],
+				data[DA7280_CUSTOM_GPI_NUM_IDX]);
+			return -EINVAL;
+		}
+
+		num = data[DA7280_CUSTOM_GPI_NUM_IDX] & 0x0f;
+		haptics->gpi_ctl[num].seq_id =
+			data[DA7280_CUSTOM_GPI_SEQ_ID_IDX] & 0x0f;
+		haptics->op_mode = haptics->periodic_op_mode;
+
+		val = FIELD_PREP(DA7280_GPI0_SEQUENCE_ID_MASK,
+				 haptics->gpi_ctl[num].seq_id);
+		error = regmap_update_bits(haptics->regmap,
+					   DA7280_GPI_0_CTL + num,
+					   DA7280_GPI0_SEQUENCE_ID_MASK,
+					   val);
+		if (error) {
+			dev_err(haptics->dev,
+				"Failed to update GPI sequence: %d\n", error);
+			return error;
+		}
+		break;
+
+	default:
+		dev_err(haptics->dev, "Unsupported effect type: %d\n",
+			effect->type);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int da7280_haptics_playback(struct input_dev *dev,
+				   int effect_id, int val)
+{
+	struct da7280_haptic *haptics = input_get_drvdata(dev);
+
+	if (!haptics->op_mode) {
+		dev_warn(haptics->dev, "No effects have been uploaded\n");
+		return -EINVAL;
+	}
+
+	if (likely(!haptics->suspended)) {
+		haptics->val = val;
+		schedule_work(&haptics->work);
+	}
+
+	return 0;
+}
+
+static int da7280_haptic_start(struct da7280_haptic *haptics)
+{
+	int error;
+
+	error = regmap_update_bits(haptics->regmap,
+				   DA7280_TOP_CTL1,
+				   DA7280_STANDBY_EN_MASK,
+				   DA7280_STANDBY_EN_MASK);
+	if (error) {
+		dev_err(haptics->dev, "Unable to enable device: %d\n", error);
+		return error;
+	}
+
+	return 0;
+}
+
+static void da7280_haptic_stop(struct da7280_haptic *haptics)
+{
+	int error;
+
+	cancel_work_sync(&haptics->work);
+
+
+	da7280_haptic_deactivate(haptics);
+
+	error = regmap_update_bits(haptics->regmap, DA7280_TOP_CTL1,
+				   DA7280_STANDBY_EN_MASK, 0);
+	if (error)
+		dev_err(haptics->dev, "Failed to disable device: %d\n", error);
+}
+
+static int da7280_haptic_open(struct input_dev *dev)
+{
+	struct da7280_haptic *haptics = input_get_drvdata(dev);
+
+	return da7280_haptic_start(haptics);
+}
+
+static void da7280_haptic_close(struct input_dev *dev)
+{
+	struct da7280_haptic *haptics = input_get_drvdata(dev);
+
+	da7280_haptic_stop(haptics);
+}
+
+static u8 da7280_haptic_of_mode_str(struct device *dev,
+				    const char *str)
+{
+	if (!strcmp(str, "LRA")) {
+		return DA7280_LRA;
+	} else if (!strcmp(str, "ERM-bar")) {
+		return DA7280_ERM_BAR;
+	} else if (!strcmp(str, "ERM-coin")) {
+		return DA7280_ERM_COIN;
+	} else {
+		dev_warn(dev, "Invalid string - set to LRA\n");
+		return DA7280_LRA;
+	}
+}
+
+static u8 da7280_haptic_of_gpi_mode_str(struct device *dev,
+					const char *str)
+{
+	if (!strcmp(str, "Single-pattern")) {
+		return 0;
+	} else if (!strcmp(str, "Multi-pattern")) {
+		return 1;
+	} else {
+		dev_warn(dev, "Invalid string - set to Single-pattern\n");
+		return 0;
+	}
+}
+
+static u8 da7280_haptic_of_gpi_pol_str(struct device *dev,
+				       const char *str)
+{
+	if (!strcmp(str, "Rising-edge")) {
+		return 0;
+	} else if (!strcmp(str, "Falling-edge")) {
+		return 1;
+	} else if (!strcmp(str, "Both-edge")) {
+		return 2;
+	} else {
+		dev_warn(dev, "Invalid string - set to Rising-edge\n");
+		return 0;
+	}
+}
+
+static u8 da7280_haptic_of_volt_rating_set(u32 val)
+{
+	u32 voltage = val / DA7280_VOLTAGE_RATE_STEP + 1;
+
+	return min_t(u32, voltage, 0xff);
+}
+
+static void da7280_parse_properties(struct device *dev,
+				    struct da7280_haptic *haptics)
+{
+	unsigned int i, mem[DA7280_SNP_MEM_SIZE];
+	char gpi_str1[] = "dlg,gpi0-seq-id";
+	char gpi_str2[] = "dlg,gpi0-mode";
+	char gpi_str3[] = "dlg,gpi0-polarity";
+	const char *str;
+	u32 val;
+	int error;
+
+	/*
+	 * If there is no property, then use the mode programmed into the chip.
+	 */
+	haptics->dev_type = DA7280_DEV_MAX;
+	error = device_property_read_string(dev, "dlg,actuator-type", &str);
+	if (!error)
+		haptics->dev_type = da7280_haptic_of_mode_str(dev, str);
+
+	haptics->const_op_mode = DA7280_DRO_MODE;
+	error = device_property_read_u32(dev, "dlg,const-op-mode", &val);
+	if (!error && val == DA7280_FF_PERIODIC_PWM)
+		haptics->const_op_mode = DA7280_PWM_MODE;
+
+	haptics->periodic_op_mode = DA7280_RTWM_MODE;
+	error = device_property_read_u32(dev, "dlg,periodic-op-mode", &val);
+	if (!error && val == DA7280_FF_PERIODIC_ETWM)
+		haptics->periodic_op_mode = DA7280_ETWM_MODE;
+
+	haptics->nommax = DA7280_SKIP_INIT;
+	error = device_property_read_u32(dev, "dlg,nom-microvolt", &val);
+	if (!error && val < DA7280_VOLTAGE_RATE_MAX)
+		haptics->nommax = da7280_haptic_of_volt_rating_set(val);
+
+	haptics->absmax = DA7280_SKIP_INIT;
+	error = device_property_read_u32(dev, "dlg,abs-max-microvolt", &val);
+	if (!error && val < DA7280_VOLTAGE_RATE_MAX)
+		haptics->absmax = da7280_haptic_of_volt_rating_set(val);
+
+	haptics->imax = DA7280_IMAX_DEFAULT;
+	error = device_property_read_u32(dev, "dlg,imax-microamp", &val);
+	if (!error && val < DA7280_IMAX_LIMIT)
+		haptics->imax = (val - 28600) / DA7280_IMAX_STEP + 1;
+
+	haptics->impd = DA7280_IMPD_DEFAULT;
+	error = device_property_read_u32(dev, "dlg,impd-micro-ohms", &val);
+	if (!error && val <= DA7280_IMPD_MAX)
+		haptics->impd = val;
+
+	haptics->resonant_freq_h = DA7280_SKIP_INIT;
+	haptics->resonant_freq_l = DA7280_SKIP_INIT;
+	error = device_property_read_u32(dev, "dlg,resonant-freq-hz", &val);
+	if (!error) {
+		if (val < DA7280_MAX_RESONAT_FREQ_HZ &&
+		    val > DA7280_MIN_RESONAT_FREQ_HZ) {
+			haptics->resonant_freq_h =
+				((1000000000 / (val * 1333)) >> 7) & 0xFF;
+			haptics->resonant_freq_l =
+				(1000000000 / (val * 1333)) & 0x7F;
+		} else {
+			haptics->resonant_freq_h = DA7280_RESONT_FREQH_DFT;
+			haptics->resonant_freq_l = DA7280_RESONT_FREQL_DFT;
+		}
+	}
+
+	/* If no property, set to zero as default is to do nothing. */
+	haptics->ps_seq_id = 0;
+	error = device_property_read_u32(dev, "dlg,ps-seq-id", &val);
+	if (!error && val <= DA7280_SEQ_ID_MAX)
+		haptics->ps_seq_id = val;
+
+	haptics->ps_seq_loop = 0;
+	error = device_property_read_u32(dev, "dlg,ps-seq-loop", &val);
+	if (!error && val <= DA7280_SEQ_LOOP_MAX)
+		haptics->ps_seq_loop = val;
+
+	/* GPI0~2 Control */
+	for (i = 0; i <= DA7280_GPI_SEQ_ID_MAX; i++) {
+		gpi_str1[7] = '0' + i;
+		haptics->gpi_ctl[i].seq_id = DA7280_GPI_SEQ_ID_DFT + i;
+		error = device_property_read_u32 (dev, gpi_str1, &val);
+		if (!error && val <= DA7280_SEQ_ID_MAX)
+			haptics->gpi_ctl[i].seq_id = val;
+
+		gpi_str2[7] = '0' + i;
+		haptics->gpi_ctl[i].mode = 0;
+		error = device_property_read_string(dev, gpi_str2, &str);
+		if (!error)
+			haptics->gpi_ctl[i].mode =
+				da7280_haptic_of_gpi_mode_str(dev, str);
+
+		gpi_str3[7] = '0' + i;
+		haptics->gpi_ctl[i].polarity = 0;
+		error = device_property_read_string(dev, gpi_str3, &str);
+		if (!error)
+			haptics->gpi_ctl[i].polarity =
+				da7280_haptic_of_gpi_pol_str(dev, str);
+	}
+
+	haptics->bemf_sense_en =
+		device_property_read_bool(dev, "dlg,bemf-sens-enable");
+	haptics->freq_track_en =
+		device_property_read_bool(dev, "dlg,freq-track-enable");
+	haptics->acc_en =
+		device_property_read_bool(dev, "dlg,acc-enable");
+	haptics->rapid_stop_en =
+		device_property_read_bool(dev, "dlg,rapid-stop-enable");
+	haptics->amp_pid_en =
+		device_property_read_bool(dev, "dlg,amp-pid-enable");
+
+	haptics->mem_update = false;
+	error = device_property_read_u32_array(dev, "dlg,mem-array",
+					       &mem[0], DA7280_SNP_MEM_SIZE);
+	if (!error) {
+		haptics->mem_update = true;
+		memset(haptics->snp_mem, 0, DA7280_SNP_MEM_SIZE);
+		for (i = 0; i < DA7280_SNP_MEM_SIZE; i++) {
+			if (mem[i] <= 0xff) {
+				haptics->snp_mem[i] = (u8)mem[i];
+			} else {
+				dev_err(haptics->dev,
+					"Invalid data in mem-array at %d: %x\n",
+					i, mem[i]);
+				haptics->mem_update = false;
+				break;
+			}
+		}
+	}
+}
+
+static irqreturn_t da7280_irq_handler(int irq, void *data)
+{
+	struct da7280_haptic *haptics = data;
+	struct device *dev = haptics->dev;
+	u8 events[DA7280_IRQ_NUM];
+	int error;
+
+	/* Check what events have happened */
+	error = regmap_bulk_read(haptics->regmap, DA7280_IRQ_EVENT1,
+				 events, sizeof(events));
+	if (error) {
+		dev_err(dev, "failed to read interrupt data: %d\n", error);
+		goto out;
+	}
+
+	/* Clear events */
+	error = regmap_write(haptics->regmap, DA7280_IRQ_EVENT1, events[0]);
+	if (error) {
+		dev_err(dev, "failed to clear interrupts: %d\n", error);
+		goto out;
+	}
+
+	if (events[0] & DA7280_E_SEQ_FAULT_MASK) {
+		/*
+		 * Stop first if haptic is active, otherwise, the fault may
+		 * happen continually even though the bit is cleared.
+		 */
+		error = regmap_update_bits(haptics->regmap, DA7280_TOP_CTL1,
+					   DA7280_OPERATION_MODE_MASK, 0);
+		if (error)
+			dev_err(dev, "failed to clear op mode on fault: %d\n",
+				error);
+	}
+
+	if (events[0] & DA7280_E_SEQ_DONE_MASK)
+		haptics->active = false;
+
+	if (events[0] & DA7280_E_WARNING_MASK) {
+		if (events[1] & DA7280_E_LIM_DRIVE_MASK ||
+		    events[1] & DA7280_E_LIM_DRIVE_ACC_MASK)
+			dev_warn(dev, "Please reduce the driver level\n");
+		if (events[1] & DA7280_E_MEM_TYPE_MASK)
+			dev_warn(dev, "Please check the mem data format\n");
+		if (events[1] & DA7280_E_OVERTEMP_WARN_MASK)
+			dev_warn(dev, "Over-temperature warning\n");
+	}
+
+	if (events[0] & DA7280_E_SEQ_FAULT_MASK) {
+		if (events[2] & DA7280_E_SEQ_ID_FAULT_MASK)
+			dev_info(dev, "Please reload PS_SEQ_ID & mem data\n");
+		if (events[2] & DA7280_E_MEM_FAULT_MASK)
+			dev_info(dev, "Please reload the mem data\n");
+		if (events[2] & DA7280_E_PWM_FAULT_MASK)
+			dev_info(dev, "Please restart PWM interface\n");
+	}
+
+out:
+	return IRQ_HANDLED;
+}
+
+static int da7280_init(struct da7280_haptic *haptics)
+{
+	unsigned int val = 0;
+	u32 v2i_factor;
+	int error, i;
+	u8 mask = 0;
+
+	/*
+	 * If device type is DA7280_DEV_MAX then simply use currently
+	 * programmed mode.
+	 */
+	if (haptics->dev_type == DA7280_DEV_MAX) {
+		error = regmap_read(haptics->regmap, DA7280_TOP_CFG1, &val);
+		if (error)
+			goto out_err;
+
+		haptics->dev_type = val & DA7280_ACTUATOR_TYPE_MASK ?
+					DA7280_ERM_COIN : DA7280_LRA;
+	}
+
+	/* Apply user settings */
+	if (haptics->dev_type == DA7280_LRA &&
+	    haptics->resonant_freq_l != DA7280_SKIP_INIT) {
+		error = regmap_write(haptics->regmap, DA7280_FRQ_LRA_PER_H,
+				     haptics->resonant_freq_h);
+		if (error)
+			goto out_err;
+		error = regmap_write(haptics->regmap, DA7280_FRQ_LRA_PER_L,
+				     haptics->resonant_freq_l);
+		if (error)
+			goto out_err;
+	} else if (haptics->dev_type == DA7280_ERM_COIN) {
+		error = regmap_update_bits(haptics->regmap, DA7280_TOP_INT_CFG1,
+					   DA7280_BEMF_FAULT_LIM_MASK, 0);
+		if (error)
+			goto out_err;
+
+		mask = DA7280_TST_CALIB_IMPEDANCE_DIS_MASK |
+			DA7280_V2I_FACTOR_FREEZE_MASK;
+		val = DA7280_TST_CALIB_IMPEDANCE_DIS_MASK |
+			DA7280_V2I_FACTOR_FREEZE_MASK;
+		error = regmap_update_bits(haptics->regmap, DA7280_TOP_CFG4,
+					   mask, val);
+		if (error)
+			goto out_err;
+
+		haptics->acc_en = false;
+		haptics->rapid_stop_en = false;
+		haptics->amp_pid_en = false;
+	}
+
+	mask = DA7280_ACTUATOR_TYPE_MASK |
+			DA7280_BEMF_SENSE_EN_MASK |
+			DA7280_FREQ_TRACK_EN_MASK |
+			DA7280_ACCELERATION_EN_MASK |
+			DA7280_RAPID_STOP_EN_MASK |
+			DA7280_AMP_PID_EN_MASK;
+	val = FIELD_PREP(DA7280_ACTUATOR_TYPE_MASK,
+			 (haptics->dev_type ? 1 : 0)) |
+		FIELD_PREP(DA7280_BEMF_SENSE_EN_MASK,
+			   (haptics->bemf_sense_en ? 1 : 0)) |
+		FIELD_PREP(DA7280_FREQ_TRACK_EN_MASK,
+			   (haptics->freq_track_en ? 1 : 0)) |
+		FIELD_PREP(DA7280_ACCELERATION_EN_MASK,
+			   (haptics->acc_en ? 1 : 0)) |
+		FIELD_PREP(DA7280_RAPID_STOP_EN_MASK,
+			   (haptics->rapid_stop_en ? 1 : 0)) |
+		FIELD_PREP(DA7280_AMP_PID_EN_MASK,
+			   (haptics->amp_pid_en ? 1 : 0));
+
+	error = regmap_update_bits(haptics->regmap, DA7280_TOP_CFG1, mask, val);
+	if (error)
+		goto out_err;
+
+	error = regmap_update_bits(haptics->regmap, DA7280_TOP_CFG5,
+				   DA7280_V2I_FACTOR_OFFSET_EN_MASK,
+				   haptics->acc_en ?
+					DA7280_V2I_FACTOR_OFFSET_EN_MASK : 0);
+	if (error)
+		goto out_err;
+
+	error = regmap_update_bits(haptics->regmap,
+				   DA7280_TOP_CFG2,
+				   DA7280_MEM_DATA_SIGNED_MASK,
+				   haptics->acc_en ?
+					0 : DA7280_MEM_DATA_SIGNED_MASK);
+	if (error)
+		goto out_err;
+
+	if (haptics->nommax != DA7280_SKIP_INIT) {
+		error = regmap_write(haptics->regmap, DA7280_ACTUATOR1,
+				     haptics->nommax);
+		if (error)
+			goto out_err;
+	}
+
+	if (haptics->absmax != DA7280_SKIP_INIT) {
+		error = regmap_write(haptics->regmap, DA7280_ACTUATOR2,
+				     haptics->absmax);
+		if (error)
+			goto out_err;
+	}
+
+	error = regmap_update_bits(haptics->regmap, DA7280_ACTUATOR3,
+				   DA7280_IMAX_MASK, haptics->imax);
+	if (error)
+		goto out_err;
+
+	v2i_factor = haptics->impd * (haptics->imax + 4) / 1610400;
+	error = regmap_write(haptics->regmap, DA7280_CALIB_V2I_L,
+			     v2i_factor & 0xff);
+	if (error)
+		goto out_err;
+	error = regmap_write(haptics->regmap, DA7280_CALIB_V2I_H,
+			     v2i_factor >> 8);
+	if (error)
+		goto out_err;
+
+	error = regmap_update_bits(haptics->regmap,
+				   DA7280_TOP_CTL1,
+				   DA7280_STANDBY_EN_MASK,
+				   DA7280_STANDBY_EN_MASK);
+	if (error)
+		goto out_err;
+
+	if (haptics->mem_update) {
+		error = da7280_haptic_mem_update(haptics);
+		if (error)
+			goto out_err;
+	}
+
+	/* Set  PS_SEQ_ID and PS_SEQ_LOOP */
+	val = FIELD_PREP(DA7280_PS_SEQ_ID_MASK, haptics->ps_seq_id) |
+		FIELD_PREP(DA7280_PS_SEQ_LOOP_MASK, haptics->ps_seq_loop);
+	error = regmap_write(haptics->regmap, DA7280_SEQ_CTL2, val);
+	if (error)
+		goto out_err;
+
+	/* GPI(N) CTL */
+	for (i = 0; i < 3; i++) {
+		val = FIELD_PREP(DA7280_GPI0_SEQUENCE_ID_MASK,
+				 haptics->gpi_ctl[i].seq_id) |
+			FIELD_PREP(DA7280_GPI0_MODE_MASK,
+				   haptics->gpi_ctl[i].mode) |
+			FIELD_PREP(DA7280_GPI0_POLARITY_MASK,
+				   haptics->gpi_ctl[i].polarity);
+		error = regmap_write(haptics->regmap,
+				     DA7280_GPI_0_CTL + i, val);
+		if (error)
+			goto out_err;
+	}
+
+	/* Mask ADC_SAT_M bit as default */
+	error = regmap_update_bits(haptics->regmap,
+				   DA7280_IRQ_MASK2,
+				   DA7280_ADC_SAT_M_MASK,
+				   DA7280_ADC_SAT_M_MASK);
+	if (error)
+		goto out_err;
+
+	/* Clear Interrupts */
+	error = regmap_write(haptics->regmap, DA7280_IRQ_EVENT1, 0xff);
+	if (error)
+		goto out_err;
+
+	error = regmap_update_bits(haptics->regmap,
+				   DA7280_IRQ_MASK1,
+				   DA7280_SEQ_FAULT_M_MASK |
+					DA7280_SEQ_DONE_M_MASK,
+				   0);
+	if (error)
+		goto out_err;
+
+	haptics->active = false;
+	return 0;
+
+out_err:
+	dev_err(haptics->dev, "chip initialization error: %d\n", error);
+	return error;
+}
+
+static int da7280_probe(struct i2c_client *client,
+			const struct i2c_device_id *id)
+{
+	struct device *dev = &client->dev;
+	struct da7280_haptic *haptics;
+	struct input_dev *input_dev;
+	struct pwm_state state;
+	struct ff_device *ff;
+	int error;
+
+	if (!client->irq) {
+		dev_err(dev, "No IRQ configured\n");
+		return -EINVAL;
+	}
+
+	haptics = devm_kzalloc(dev, sizeof(*haptics), GFP_KERNEL);
+	if (!haptics)
+		return -ENOMEM;
+
+	haptics->dev = dev;
+
+	da7280_parse_properties(dev, haptics);
+
+	if (haptics->const_op_mode == DA7280_PWM_MODE) {
+		haptics->pwm_dev = devm_pwm_get(dev, NULL);
+		error = PTR_ERR_OR_ZERO(haptics->pwm_dev);
+		if (error) {
+			if (error != -EPROBE_DEFER)
+				dev_err(dev, "Unable to request PWM: %d\n",
+					error);
+			return error;
+		}
+
+		/* Sync up PWM state and ensure it is off. */
+		pwm_init_state(haptics->pwm_dev, &state);
+		state.enabled = false;
+		error = pwm_apply_state(haptics->pwm_dev, &state);
+		if (error) {
+			dev_err(dev, "Failed to apply PWM state: %d\n", error);
+			return error;
+		}
+
+		/*
+		 * Check PWM period, PWM freq = 1000000 / state.period.
+		 * The valid PWM freq range: 10k ~ 250kHz.
+		 */
+		if (state.period > 100000 || state.period < 4000) {
+			dev_err(dev, "Unsupported PWM period: %lld\n",
+				state.period);
+			return -EINVAL;
+		}
+	}
+
+	INIT_WORK(&haptics->work, da7280_haptic_work);
+
+	haptics->client = client;
+	i2c_set_clientdata(client, haptics);
+
+	haptics->regmap = devm_regmap_init_i2c(client,
+					       &da7280_haptic_regmap_config);
+	error = PTR_ERR_OR_ZERO(haptics->regmap);
+	if (error) {
+		dev_err(dev, "Failed to allocate register map: %d\n", error);
+		return error;
+	}
+
+	error = da7280_init(haptics);
+	if (error) {
+		dev_err(dev, "Failed to initialize device: %d\n", error);
+		return error;
+	}
+
+	/* Initialize input device for haptic device */
+	input_dev = devm_input_allocate_device(dev);
+	if (!input_dev) {
+		dev_err(dev, "Failed to allocate input device\n");
+		return -ENOMEM;
+	}
+
+	input_dev->name = "da7280-haptic";
+	input_dev->dev.parent = client->dev.parent;
+	input_dev->open = da7280_haptic_open;
+	input_dev->close = da7280_haptic_close;
+	input_set_drvdata(input_dev, haptics);
+	haptics->input_dev = input_dev;
+
+	input_set_capability(haptics->input_dev, EV_FF, FF_PERIODIC);
+	input_set_capability(haptics->input_dev, EV_FF, FF_CUSTOM);
+	input_set_capability(haptics->input_dev, EV_FF, FF_CONSTANT);
+	input_set_capability(haptics->input_dev, EV_FF, FF_GAIN);
+
+	error = input_ff_create(haptics->input_dev,
+				DA7280_FF_EFFECT_COUNT_MAX);
+	if (error) {
+		dev_err(dev, "Failed to create FF input device: %d\n", error);
+		return error;
+	}
+
+	ff = input_dev->ff;
+	ff->upload = da7280_haptics_upload_effect;
+	ff->playback = da7280_haptics_playback;
+
+	error = input_register_device(input_dev);
+	if (error) {
+		dev_err(dev, "Failed to register input device: %d\n", error);
+		return error;
+	}
+
+	error = devm_request_threaded_irq(dev, client->irq,
+					  NULL, da7280_irq_handler,
+					  IRQF_ONESHOT,
+					  "da7280-haptics", haptics);
+	if (error) {
+		dev_err(dev, "Failed to request IRQ %d: %d\n",
+			client->irq, error);
+		return error;
+	}
+
+	return 0;
+}
+
+static int __maybe_unused da7280_suspend(struct device *dev)
+{
+	struct da7280_haptic *haptics = dev_get_drvdata(dev);
+
+	mutex_lock(&haptics->input_dev->mutex);
+
+	/*
+	 * Make sure no new requests will be submitted while device is
+	 * suspended.
+	 */
+	spin_lock_irq(&haptics->input_dev->event_lock);
+	haptics->suspended = true;
+	spin_unlock_irq(&haptics->input_dev->event_lock);
+
+	da7280_haptic_stop(haptics);
+
+	mutex_unlock(&haptics->input_dev->mutex);
+
+	return 0;
+}
+
+static int __maybe_unused da7280_resume(struct device *dev)
+{
+	struct da7280_haptic *haptics = dev_get_drvdata(dev);
+	int retval;
+
+	mutex_lock(&haptics->input_dev->mutex);
+
+	retval = da7280_haptic_start(haptics);
+	if (!retval) {
+		spin_lock_irq(&haptics->input_dev->event_lock);
+		haptics->suspended = false;
+		spin_unlock_irq(&haptics->input_dev->event_lock);
+	}
+
+	mutex_unlock(&haptics->input_dev->mutex);
+	return retval;
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id da7280_of_match[] = {
+	{ .compatible = "dlg,da7280", },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, da7280_of_match);
+#endif
+
+static const struct i2c_device_id da7280_i2c_id[] = {
+	{ "da7280", },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, da7280_i2c_id);
+
+static SIMPLE_DEV_PM_OPS(da7280_pm_ops, da7280_suspend, da7280_resume);
+
+static struct i2c_driver da7280_driver = {
+	.driver = {
+		.name = "da7280",
+		.of_match_table = of_match_ptr(da7280_of_match),
+		.pm = &da7280_pm_ops,
+	},
+	.probe = da7280_probe,
+	.id_table = da7280_i2c_id,
+};
+module_i2c_driver(da7280_driver);
+
+MODULE_DESCRIPTION("DA7280 haptics driver");
+MODULE_AUTHOR("Roy Im <Roy.Im.Opensource@diasemi.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/misc/da9052_onkey.c b/drivers/input/misc/da9052_onkey.c
new file mode 100644
index 000000000..6d1152850
--- /dev/null
+++ b/drivers/input/misc/da9052_onkey.c
@@ -0,0 +1,155 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * ON pin driver for Dialog DA9052 PMICs
+ *
+ * Copyright(c) 2012 Dialog Semiconductor Ltd.
+ *
+ * Author: David Dajun Chen <dchen@diasemi.com>
+ */
+
+#include <linux/input.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/workqueue.h>
+
+#include <linux/mfd/da9052/da9052.h>
+#include <linux/mfd/da9052/reg.h>
+
+struct da9052_onkey {
+	struct da9052 *da9052;
+	struct input_dev *input;
+	struct delayed_work work;
+};
+
+static void da9052_onkey_query(struct da9052_onkey *onkey)
+{
+	int ret;
+
+	ret = da9052_reg_read(onkey->da9052, DA9052_STATUS_A_REG);
+	if (ret < 0) {
+		dev_err(onkey->da9052->dev,
+			"Failed to read onkey event err=%d\n", ret);
+	} else {
+		/*
+		 * Since interrupt for deassertion of ONKEY pin is not
+		 * generated, onkey event state determines the onkey
+		 * button state.
+		 */
+		bool pressed = !(ret & DA9052_STATUSA_NONKEY);
+
+		input_report_key(onkey->input, KEY_POWER, pressed);
+		input_sync(onkey->input);
+
+		/*
+		 * Interrupt is generated only when the ONKEY pin
+		 * is asserted.  Hence the deassertion of the pin
+		 * is simulated through work queue.
+		 */
+		if (pressed)
+			schedule_delayed_work(&onkey->work,
+						msecs_to_jiffies(50));
+	}
+}
+
+static void da9052_onkey_work(struct work_struct *work)
+{
+	struct da9052_onkey *onkey = container_of(work, struct da9052_onkey,
+						  work.work);
+
+	da9052_onkey_query(onkey);
+}
+
+static irqreturn_t da9052_onkey_irq(int irq, void *data)
+{
+	struct da9052_onkey *onkey = data;
+
+	da9052_onkey_query(onkey);
+
+	return IRQ_HANDLED;
+}
+
+static int da9052_onkey_probe(struct platform_device *pdev)
+{
+	struct da9052 *da9052 = dev_get_drvdata(pdev->dev.parent);
+	struct da9052_onkey *onkey;
+	struct input_dev *input_dev;
+	int error;
+
+	if (!da9052) {
+		dev_err(&pdev->dev, "Failed to get the driver's data\n");
+		return -EINVAL;
+	}
+
+	onkey = kzalloc(sizeof(*onkey), GFP_KERNEL);
+	input_dev = input_allocate_device();
+	if (!onkey || !input_dev) {
+		dev_err(&pdev->dev, "Failed to allocate memory\n");
+		error = -ENOMEM;
+		goto err_free_mem;
+	}
+
+	onkey->input = input_dev;
+	onkey->da9052 = da9052;
+	INIT_DELAYED_WORK(&onkey->work, da9052_onkey_work);
+
+	input_dev->name = "da9052-onkey";
+	input_dev->phys = "da9052-onkey/input0";
+	input_dev->dev.parent = &pdev->dev;
+
+	input_dev->evbit[0] = BIT_MASK(EV_KEY);
+	__set_bit(KEY_POWER, input_dev->keybit);
+
+	error = da9052_request_irq(onkey->da9052, DA9052_IRQ_NONKEY, "ONKEY",
+			    da9052_onkey_irq, onkey);
+	if (error < 0) {
+		dev_err(onkey->da9052->dev,
+			"Failed to register ONKEY IRQ: %d\n", error);
+		goto err_free_mem;
+	}
+
+	error = input_register_device(onkey->input);
+	if (error) {
+		dev_err(&pdev->dev, "Unable to register input device, %d\n",
+			error);
+		goto err_free_irq;
+	}
+
+	platform_set_drvdata(pdev, onkey);
+	return 0;
+
+err_free_irq:
+	da9052_free_irq(onkey->da9052, DA9052_IRQ_NONKEY, onkey);
+	cancel_delayed_work_sync(&onkey->work);
+err_free_mem:
+	input_free_device(input_dev);
+	kfree(onkey);
+
+	return error;
+}
+
+static int da9052_onkey_remove(struct platform_device *pdev)
+{
+	struct da9052_onkey *onkey = platform_get_drvdata(pdev);
+
+	da9052_free_irq(onkey->da9052, DA9052_IRQ_NONKEY, onkey);
+	cancel_delayed_work_sync(&onkey->work);
+
+	input_unregister_device(onkey->input);
+	kfree(onkey);
+
+	return 0;
+}
+
+static struct platform_driver da9052_onkey_driver = {
+	.probe	= da9052_onkey_probe,
+	.remove	= da9052_onkey_remove,
+	.driver = {
+		.name	= "da9052-onkey",
+	},
+};
+module_platform_driver(da9052_onkey_driver);
+
+MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>");
+MODULE_DESCRIPTION("Onkey driver for DA9052");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:da9052-onkey");
diff --git a/drivers/input/misc/da9055_onkey.c b/drivers/input/misc/da9055_onkey.c
new file mode 100644
index 000000000..7a0d3a1d5
--- /dev/null
+++ b/drivers/input/misc/da9055_onkey.c
@@ -0,0 +1,161 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * ON pin driver for Dialog DA9055 PMICs
+ *
+ * Copyright(c) 2012 Dialog Semiconductor Ltd.
+ *
+ * Author: David Dajun Chen <dchen@diasemi.com>
+ */
+
+#include <linux/input.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <linux/mfd/da9055/core.h>
+#include <linux/mfd/da9055/reg.h>
+
+struct da9055_onkey {
+	struct da9055 *da9055;
+	struct input_dev *input;
+	struct delayed_work work;
+};
+
+static void da9055_onkey_query(struct da9055_onkey *onkey)
+{
+	int key_stat;
+
+	key_stat = da9055_reg_read(onkey->da9055, DA9055_REG_STATUS_A);
+	if (key_stat < 0) {
+		dev_err(onkey->da9055->dev,
+			"Failed to read onkey event %d\n", key_stat);
+	} else {
+		key_stat &= DA9055_NOKEY_STS;
+		/*
+		 * Onkey status bit is cleared when onkey button is released.
+		 */
+		if (!key_stat) {
+			input_report_key(onkey->input, KEY_POWER, 0);
+			input_sync(onkey->input);
+		}
+	}
+
+	/*
+	 * Interrupt is generated only when the ONKEY pin is asserted.
+	 * Hence the deassertion of the pin is simulated through work queue.
+	 */
+	if (key_stat)
+		schedule_delayed_work(&onkey->work, msecs_to_jiffies(10));
+
+}
+
+static void da9055_onkey_work(struct work_struct *work)
+{
+	struct da9055_onkey *onkey = container_of(work, struct da9055_onkey,
+						  work.work);
+
+	da9055_onkey_query(onkey);
+}
+
+static irqreturn_t da9055_onkey_irq(int irq, void *data)
+{
+	struct da9055_onkey *onkey = data;
+
+	input_report_key(onkey->input, KEY_POWER, 1);
+	input_sync(onkey->input);
+
+	da9055_onkey_query(onkey);
+
+	return IRQ_HANDLED;
+}
+
+static int da9055_onkey_probe(struct platform_device *pdev)
+{
+	struct da9055 *da9055 = dev_get_drvdata(pdev->dev.parent);
+	struct da9055_onkey *onkey;
+	struct input_dev *input_dev;
+	int irq, err;
+
+	irq = platform_get_irq_byname(pdev, "ONKEY");
+	if (irq < 0)
+		return -EINVAL;
+
+	onkey = devm_kzalloc(&pdev->dev, sizeof(*onkey), GFP_KERNEL);
+	if (!onkey) {
+		dev_err(&pdev->dev, "Failed to allocate memory\n");
+		return -ENOMEM;
+	}
+
+	input_dev = input_allocate_device();
+	if (!input_dev) {
+		dev_err(&pdev->dev, "Failed to allocate memory\n");
+		return -ENOMEM;
+	}
+
+	onkey->input = input_dev;
+	onkey->da9055 = da9055;
+	input_dev->name = "da9055-onkey";
+	input_dev->phys = "da9055-onkey/input0";
+	input_dev->dev.parent = &pdev->dev;
+
+	input_dev->evbit[0] = BIT_MASK(EV_KEY);
+	__set_bit(KEY_POWER, input_dev->keybit);
+
+	INIT_DELAYED_WORK(&onkey->work, da9055_onkey_work);
+
+	err = request_threaded_irq(irq, NULL, da9055_onkey_irq,
+				   IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
+				   "ONKEY", onkey);
+	if (err < 0) {
+		dev_err(&pdev->dev,
+			"Failed to register ONKEY IRQ %d, error = %d\n",
+			irq, err);
+		goto err_free_input;
+	}
+
+	err = input_register_device(input_dev);
+	if (err) {
+		dev_err(&pdev->dev, "Unable to register input device, %d\n",
+			err);
+		goto err_free_irq;
+	}
+
+	platform_set_drvdata(pdev, onkey);
+
+	return 0;
+
+err_free_irq:
+	free_irq(irq, onkey);
+	cancel_delayed_work_sync(&onkey->work);
+err_free_input:
+	input_free_device(input_dev);
+
+	return err;
+}
+
+static int da9055_onkey_remove(struct platform_device *pdev)
+{
+	struct da9055_onkey *onkey = platform_get_drvdata(pdev);
+	int irq = platform_get_irq_byname(pdev, "ONKEY");
+
+	irq = regmap_irq_get_virq(onkey->da9055->irq_data, irq);
+	free_irq(irq, onkey);
+	cancel_delayed_work_sync(&onkey->work);
+	input_unregister_device(onkey->input);
+
+	return 0;
+}
+
+static struct platform_driver da9055_onkey_driver = {
+	.probe	= da9055_onkey_probe,
+	.remove	= da9055_onkey_remove,
+	.driver = {
+		.name	= "da9055-onkey",
+	},
+};
+
+module_platform_driver(da9055_onkey_driver);
+
+MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>");
+MODULE_DESCRIPTION("Onkey driver for DA9055");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:da9055-onkey");
diff --git a/drivers/input/misc/da9063_onkey.c b/drivers/input/misc/da9063_onkey.c
new file mode 100644
index 000000000..b14a38960
--- /dev/null
+++ b/drivers/input/misc/da9063_onkey.c
@@ -0,0 +1,276 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * OnKey device driver for DA9063, DA9062 and DA9061 PMICs
+ * Copyright (C) 2015  Dialog Semiconductor Ltd.
+ */
+
+#include <linux/devm-helpers.h>
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/workqueue.h>
+#include <linux/regmap.h>
+#include <linux/of.h>
+#include <linux/mfd/da9063/core.h>
+#include <linux/mfd/da9063/registers.h>
+#include <linux/mfd/da9062/core.h>
+#include <linux/mfd/da9062/registers.h>
+
+struct da906x_chip_config {
+	/* REGS */
+	int onkey_status;
+	int onkey_pwr_signalling;
+	int onkey_fault_log;
+	int onkey_shutdown;
+	/* MASKS */
+	int onkey_nonkey_mask;
+	int onkey_nonkey_lock_mask;
+	int onkey_key_reset_mask;
+	int onkey_shutdown_mask;
+	/* NAMES */
+	const char *name;
+};
+
+struct da9063_onkey {
+	struct delayed_work work;
+	struct input_dev *input;
+	struct device *dev;
+	struct regmap *regmap;
+	const struct da906x_chip_config *config;
+	char phys[32];
+	bool key_power;
+};
+
+static const struct da906x_chip_config da9063_regs = {
+	/* REGS */
+	.onkey_status = DA9063_REG_STATUS_A,
+	.onkey_pwr_signalling = DA9063_REG_CONTROL_B,
+	.onkey_fault_log = DA9063_REG_FAULT_LOG,
+	.onkey_shutdown = DA9063_REG_CONTROL_F,
+	/* MASKS */
+	.onkey_nonkey_mask = DA9063_NONKEY,
+	.onkey_nonkey_lock_mask = DA9063_NONKEY_LOCK,
+	.onkey_key_reset_mask = DA9063_KEY_RESET,
+	.onkey_shutdown_mask = DA9063_SHUTDOWN,
+	/* NAMES */
+	.name = DA9063_DRVNAME_ONKEY,
+};
+
+static const struct da906x_chip_config da9062_regs = {
+	/* REGS */
+	.onkey_status = DA9062AA_STATUS_A,
+	.onkey_pwr_signalling = DA9062AA_CONTROL_B,
+	.onkey_fault_log = DA9062AA_FAULT_LOG,
+	.onkey_shutdown = DA9062AA_CONTROL_F,
+	/* MASKS */
+	.onkey_nonkey_mask = DA9062AA_NONKEY_MASK,
+	.onkey_nonkey_lock_mask = DA9062AA_NONKEY_LOCK_MASK,
+	.onkey_key_reset_mask = DA9062AA_KEY_RESET_MASK,
+	.onkey_shutdown_mask = DA9062AA_SHUTDOWN_MASK,
+	/* NAMES */
+	.name = "da9062-onkey",
+};
+
+static const struct of_device_id da9063_compatible_reg_id_table[] = {
+	{ .compatible = "dlg,da9063-onkey", .data = &da9063_regs },
+	{ .compatible = "dlg,da9062-onkey", .data = &da9062_regs },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, da9063_compatible_reg_id_table);
+
+static void da9063_poll_on(struct work_struct *work)
+{
+	struct da9063_onkey *onkey = container_of(work,
+						struct da9063_onkey,
+						work.work);
+	const struct da906x_chip_config *config = onkey->config;
+	unsigned int val;
+	int fault_log = 0;
+	bool poll = true;
+	int error;
+
+	/* Poll to see when the pin is released */
+	error = regmap_read(onkey->regmap,
+			    config->onkey_status,
+			    &val);
+	if (error) {
+		dev_err(onkey->dev,
+			"Failed to read ON status: %d\n", error);
+		goto err_poll;
+	}
+
+	if (!(val & config->onkey_nonkey_mask)) {
+		error = regmap_update_bits(onkey->regmap,
+					   config->onkey_pwr_signalling,
+					   config->onkey_nonkey_lock_mask,
+					   0);
+		if (error) {
+			dev_err(onkey->dev,
+				"Failed to reset the Key Delay %d\n", error);
+			goto err_poll;
+		}
+
+		input_report_key(onkey->input, KEY_POWER, 0);
+		input_sync(onkey->input);
+
+		poll = false;
+	}
+
+	/*
+	 * If the fault log KEY_RESET is detected, then clear it
+	 * and shut down the system.
+	 */
+	error = regmap_read(onkey->regmap,
+			    config->onkey_fault_log,
+			    &fault_log);
+	if (error) {
+		dev_warn(&onkey->input->dev,
+			 "Cannot read FAULT_LOG: %d\n", error);
+	} else if (fault_log & config->onkey_key_reset_mask) {
+		error = regmap_write(onkey->regmap,
+				     config->onkey_fault_log,
+				     config->onkey_key_reset_mask);
+		if (error) {
+			dev_warn(&onkey->input->dev,
+				 "Cannot reset KEY_RESET fault log: %d\n",
+				 error);
+		} else {
+			/* at this point we do any S/W housekeeping
+			 * and then send shutdown command
+			 */
+			dev_dbg(&onkey->input->dev,
+				"Sending SHUTDOWN to PMIC ...\n");
+			error = regmap_write(onkey->regmap,
+					     config->onkey_shutdown,
+					     config->onkey_shutdown_mask);
+			if (error)
+				dev_err(&onkey->input->dev,
+					"Cannot SHUTDOWN PMIC: %d\n",
+					error);
+		}
+	}
+
+err_poll:
+	if (poll)
+		schedule_delayed_work(&onkey->work, msecs_to_jiffies(50));
+}
+
+static irqreturn_t da9063_onkey_irq_handler(int irq, void *data)
+{
+	struct da9063_onkey *onkey = data;
+	const struct da906x_chip_config *config = onkey->config;
+	unsigned int val;
+	int error;
+
+	error = regmap_read(onkey->regmap,
+			    config->onkey_status,
+			    &val);
+	if (onkey->key_power && !error && (val & config->onkey_nonkey_mask)) {
+		input_report_key(onkey->input, KEY_POWER, 1);
+		input_sync(onkey->input);
+		schedule_delayed_work(&onkey->work, 0);
+		dev_dbg(onkey->dev, "KEY_POWER long press.\n");
+	} else {
+		input_report_key(onkey->input, KEY_POWER, 1);
+		input_sync(onkey->input);
+		input_report_key(onkey->input, KEY_POWER, 0);
+		input_sync(onkey->input);
+		dev_dbg(onkey->dev, "KEY_POWER short press.\n");
+	}
+
+	return IRQ_HANDLED;
+}
+
+static int da9063_onkey_probe(struct platform_device *pdev)
+{
+	struct da9063_onkey *onkey;
+	const struct of_device_id *match;
+	int irq;
+	int error;
+
+	match = of_match_node(da9063_compatible_reg_id_table,
+			      pdev->dev.of_node);
+	if (!match)
+		return -ENXIO;
+
+	onkey = devm_kzalloc(&pdev->dev, sizeof(struct da9063_onkey),
+			     GFP_KERNEL);
+	if (!onkey) {
+		dev_err(&pdev->dev, "Failed to allocate memory.\n");
+		return -ENOMEM;
+	}
+
+	onkey->config = match->data;
+	onkey->dev = &pdev->dev;
+
+	onkey->regmap = dev_get_regmap(pdev->dev.parent, NULL);
+	if (!onkey->regmap) {
+		dev_err(&pdev->dev, "Parent regmap unavailable.\n");
+		return -ENXIO;
+	}
+
+	onkey->key_power = !of_property_read_bool(pdev->dev.of_node,
+						  "dlg,disable-key-power");
+
+	onkey->input = devm_input_allocate_device(&pdev->dev);
+	if (!onkey->input) {
+		dev_err(&pdev->dev, "Failed to allocated input device.\n");
+		return -ENOMEM;
+	}
+
+	onkey->input->name = onkey->config->name;
+	snprintf(onkey->phys, sizeof(onkey->phys), "%s/input0",
+		 onkey->config->name);
+	onkey->input->phys = onkey->phys;
+	onkey->input->dev.parent = &pdev->dev;
+
+	input_set_capability(onkey->input, EV_KEY, KEY_POWER);
+
+	error = devm_delayed_work_autocancel(&pdev->dev, &onkey->work,
+					     da9063_poll_on);
+	if (error) {
+		dev_err(&pdev->dev,
+			"Failed to add cancel poll action: %d\n",
+			error);
+		return error;
+	}
+
+	irq = platform_get_irq_byname(pdev, "ONKEY");
+	if (irq < 0)
+		return irq;
+
+	error = devm_request_threaded_irq(&pdev->dev, irq,
+					  NULL, da9063_onkey_irq_handler,
+					  IRQF_TRIGGER_LOW | IRQF_ONESHOT,
+					  "ONKEY", onkey);
+	if (error) {
+		dev_err(&pdev->dev,
+			"Failed to request IRQ %d: %d\n", irq, error);
+		return error;
+	}
+
+	error = input_register_device(onkey->input);
+	if (error) {
+		dev_err(&pdev->dev,
+			"Failed to register input device: %d\n", error);
+		return error;
+	}
+
+	return 0;
+}
+
+static struct platform_driver da9063_onkey_driver = {
+	.probe	= da9063_onkey_probe,
+	.driver	= {
+		.name	= DA9063_DRVNAME_ONKEY,
+		.of_match_table = da9063_compatible_reg_id_table,
+	},
+};
+module_platform_driver(da9063_onkey_driver);
+
+MODULE_AUTHOR("S Twiss <stwiss.opensource@diasemi.com>");
+MODULE_DESCRIPTION("Onkey device driver for Dialog DA9063, DA9062 and DA9061");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:" DA9063_DRVNAME_ONKEY);
diff --git a/drivers/input/misc/dm355evm_keys.c b/drivers/input/misc/dm355evm_keys.c
new file mode 100644
index 000000000..397ca7c78
--- /dev/null
+++ b/drivers/input/misc/dm355evm_keys.c
@@ -0,0 +1,238 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * dm355evm_keys.c - support buttons and IR remote on DM355 EVM board
+ *
+ * Copyright (c) 2008 by David Brownell
+ */
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/input.h>
+#include <linux/input/sparse-keymap.h>
+#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+
+#include <linux/mfd/dm355evm_msp.h>
+#include <linux/module.h>
+
+
+/*
+ * The MSP430 firmware on the DM355 EVM monitors on-board pushbuttons
+ * and an IR receptor used for the remote control.  When any key is
+ * pressed, or its autorepeat kicks in, an event is sent.  This driver
+ * read those events from the small (32 event) queue and reports them.
+ *
+ * Note that physically there can only be one of these devices.
+ *
+ * This driver was tested with firmware revision A4.
+ */
+struct dm355evm_keys {
+	struct input_dev	*input;
+	struct device		*dev;
+};
+
+/* These initial keycodes can be remapped */
+static const struct key_entry dm355evm_keys[] = {
+	/*
+	 * Pushbuttons on the EVM board ... note that the labels for these
+	 * are SW10/SW11/etc on the PC board.  The left/right orientation
+	 * comes only from the firmware's documentation, and presumes the
+	 * power connector is immediately in front of you and the IR sensor
+	 * is to the right.  (That is, rotate the board counter-clockwise
+	 * by 90 degrees from the SW10/etc and "DM355 EVM" labels.)
+	 */
+	{ KE_KEY, 0x00d8, { KEY_OK } },		/* SW12 */
+	{ KE_KEY, 0x00b8, { KEY_UP } },		/* SW13 */
+	{ KE_KEY, 0x00e8, { KEY_DOWN } },	/* SW11 */
+	{ KE_KEY, 0x0078, { KEY_LEFT } },	/* SW14 */
+	{ KE_KEY, 0x00f0, { KEY_RIGHT } },	/* SW10 */
+
+	/*
+	 * IR buttons ... codes assigned to match the universal remote
+	 * provided with the EVM (Philips PM4S) using DVD code 0020.
+	 *
+	 * These event codes match firmware documentation, but other
+	 * remote controls could easily send more RC5-encoded events.
+	 * The PM4S manual was used in several cases to help select
+	 * a keycode reflecting the intended usage.
+	 *
+	 * RC5 codes are 14 bits, with two start bits (0x3 prefix)
+	 * and a toggle bit (masked out below).
+	 */
+	{ KE_KEY, 0x300c, { KEY_POWER } },	/* NOTE: docs omit this */
+	{ KE_KEY, 0x3000, { KEY_NUMERIC_0 } },
+	{ KE_KEY, 0x3001, { KEY_NUMERIC_1 } },
+	{ KE_KEY, 0x3002, { KEY_NUMERIC_2 } },
+	{ KE_KEY, 0x3003, { KEY_NUMERIC_3 } },
+	{ KE_KEY, 0x3004, { KEY_NUMERIC_4 } },
+	{ KE_KEY, 0x3005, { KEY_NUMERIC_5 } },
+	{ KE_KEY, 0x3006, { KEY_NUMERIC_6 } },
+	{ KE_KEY, 0x3007, { KEY_NUMERIC_7 } },
+	{ KE_KEY, 0x3008, { KEY_NUMERIC_8 } },
+	{ KE_KEY, 0x3009, { KEY_NUMERIC_9 } },
+	{ KE_KEY, 0x3022, { KEY_ENTER } },
+	{ KE_KEY, 0x30ec, { KEY_MODE } },	/* "tv/vcr/..." */
+	{ KE_KEY, 0x300f, { KEY_SELECT } },	/* "info" */
+	{ KE_KEY, 0x3020, { KEY_CHANNELUP } },	/* "up" */
+	{ KE_KEY, 0x302e, { KEY_MENU } },	/* "in/out" */
+	{ KE_KEY, 0x3011, { KEY_VOLUMEDOWN } },	/* "left" */
+	{ KE_KEY, 0x300d, { KEY_MUTE } },	/* "ok" */
+	{ KE_KEY, 0x3010, { KEY_VOLUMEUP } },	/* "right" */
+	{ KE_KEY, 0x301e, { KEY_SUBTITLE } },	/* "cc" */
+	{ KE_KEY, 0x3021, { KEY_CHANNELDOWN } },/* "down" */
+	{ KE_KEY, 0x3022, { KEY_PREVIOUS } },
+	{ KE_KEY, 0x3026, { KEY_SLEEP } },
+	{ KE_KEY, 0x3172, { KEY_REWIND } },	/* NOTE: docs wrongly say 0x30ca */
+	{ KE_KEY, 0x3175, { KEY_PLAY } },
+	{ KE_KEY, 0x3174, { KEY_FASTFORWARD } },
+	{ KE_KEY, 0x3177, { KEY_RECORD } },
+	{ KE_KEY, 0x3176, { KEY_STOP } },
+	{ KE_KEY, 0x3169, { KEY_PAUSE } },
+};
+
+/*
+ * Because we communicate with the MSP430 using I2C, and all I2C calls
+ * in Linux sleep, we use a threaded IRQ handler.  The IRQ itself is
+ * active low, but we go through the GPIO controller so we can trigger
+ * on falling edges and not worry about enabling/disabling the IRQ in
+ * the keypress handling path.
+ */
+static irqreturn_t dm355evm_keys_irq(int irq, void *_keys)
+{
+	static u16 last_event;
+	struct dm355evm_keys *keys = _keys;
+	const struct key_entry *ke;
+	unsigned int keycode;
+	int status;
+	u16 event;
+
+	/* For simplicity we ignore INPUT_COUNT and just read
+	 * events until we get the "queue empty" indicator.
+	 * Reading INPUT_LOW decrements the count.
+	 */
+	for (;;) {
+		status = dm355evm_msp_read(DM355EVM_MSP_INPUT_HIGH);
+		if (status < 0) {
+			dev_dbg(keys->dev, "input high err %d\n",
+					status);
+			break;
+		}
+		event = status << 8;
+
+		status = dm355evm_msp_read(DM355EVM_MSP_INPUT_LOW);
+		if (status < 0) {
+			dev_dbg(keys->dev, "input low err %d\n",
+					status);
+			break;
+		}
+		event |= status;
+		if (event == 0xdead)
+			break;
+
+		/* Press and release a button:  two events, same code.
+		 * Press and hold (autorepeat), then release: N events
+		 * (N > 2), same code.  For RC5 buttons the toggle bits
+		 * distinguish (for example) "1-autorepeat" from "1 1";
+		 * but PCB buttons don't support that bit.
+		 *
+		 * So we must synthesize release events.  We do that by
+		 * mapping events to a press/release event pair; then
+		 * to avoid adding extra events, skip the second event
+		 * of each pair.
+		 */
+		if (event == last_event) {
+			last_event = 0;
+			continue;
+		}
+		last_event = event;
+
+		/* ignore the RC5 toggle bit */
+		event &= ~0x0800;
+
+		/* find the key, or report it as unknown */
+		ke = sparse_keymap_entry_from_scancode(keys->input, event);
+		keycode = ke ? ke->keycode : KEY_UNKNOWN;
+		dev_dbg(keys->dev,
+			"input event 0x%04x--> keycode %d\n",
+			event, keycode);
+
+		/* report press + release */
+		input_report_key(keys->input, keycode, 1);
+		input_sync(keys->input);
+		input_report_key(keys->input, keycode, 0);
+		input_sync(keys->input);
+	}
+
+	return IRQ_HANDLED;
+}
+
+/*----------------------------------------------------------------------*/
+
+static int dm355evm_keys_probe(struct platform_device *pdev)
+{
+	struct dm355evm_keys	*keys;
+	struct input_dev	*input;
+	int			irq;
+	int			error;
+
+	keys = devm_kzalloc(&pdev->dev, sizeof (*keys), GFP_KERNEL);
+	if (!keys)
+		return -ENOMEM;
+
+	input = devm_input_allocate_device(&pdev->dev);
+	if (!input)
+		return -ENOMEM;
+
+	keys->dev = &pdev->dev;
+	keys->input = input;
+
+	input->name = "DM355 EVM Controls";
+	input->phys = "dm355evm/input0";
+
+	input->id.bustype = BUS_I2C;
+	input->id.product = 0x0355;
+	input->id.version = dm355evm_msp_read(DM355EVM_MSP_FIRMREV);
+
+	error = sparse_keymap_setup(input, dm355evm_keys, NULL);
+	if (error)
+		return error;
+
+	/* REVISIT:  flush the event queue? */
+
+	/* set up "threaded IRQ handler" */
+	irq = platform_get_irq(pdev, 0);
+	if (irq < 0)
+		return irq;
+
+	error = devm_request_threaded_irq(&pdev->dev, irq,
+					  NULL, dm355evm_keys_irq,
+					  IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
+					  dev_name(&pdev->dev), keys);
+	if (error)
+		return error;
+
+	/* register */
+	error = input_register_device(input);
+	if (error)
+		return error;
+
+	return 0;
+}
+
+/* REVISIT:  add suspend/resume when DaVinci supports it.  The IRQ should
+ * be able to wake up the system.  When device_may_wakeup(&pdev->dev), call
+ * enable_irq_wake() on suspend, and disable_irq_wake() on resume.
+ */
+
+/*
+ * I2C is used to talk to the MSP430, but this platform device is
+ * exposed by an MFD driver that manages I2C communications.
+ */
+static struct platform_driver dm355evm_keys_driver = {
+	.probe		= dm355evm_keys_probe,
+	.driver		= {
+		.name	= "dm355evm_keys",
+	},
+};
+module_platform_driver(dm355evm_keys_driver);
+
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/misc/drv260x.c b/drivers/input/misc/drv260x.c
new file mode 100644
index 000000000..1923924fd
--- /dev/null
+++ b/drivers/input/misc/drv260x.c
@@ -0,0 +1,670 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * DRV260X haptics driver family
+ *
+ * Author: Dan Murphy <dmurphy@ti.com>
+ *
+ * Copyright:   (C) 2014 Texas Instruments, Inc.
+ */
+
+#include <linux/i2c.h>
+#include <linux/input.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/regulator/consumer.h>
+
+#include <dt-bindings/input/ti-drv260x.h>
+
+#define DRV260X_STATUS		0x0
+#define DRV260X_MODE		0x1
+#define DRV260X_RT_PB_IN	0x2
+#define DRV260X_LIB_SEL		0x3
+#define DRV260X_WV_SEQ_1	0x4
+#define DRV260X_WV_SEQ_2	0x5
+#define DRV260X_WV_SEQ_3	0x6
+#define DRV260X_WV_SEQ_4	0x7
+#define DRV260X_WV_SEQ_5	0x8
+#define DRV260X_WV_SEQ_6	0x9
+#define DRV260X_WV_SEQ_7	0xa
+#define DRV260X_WV_SEQ_8	0xb
+#define DRV260X_GO				0xc
+#define DRV260X_OVERDRIVE_OFF	0xd
+#define DRV260X_SUSTAIN_P_OFF	0xe
+#define DRV260X_SUSTAIN_N_OFF	0xf
+#define DRV260X_BRAKE_OFF		0x10
+#define DRV260X_A_TO_V_CTRL		0x11
+#define DRV260X_A_TO_V_MIN_INPUT	0x12
+#define DRV260X_A_TO_V_MAX_INPUT	0x13
+#define DRV260X_A_TO_V_MIN_OUT	0x14
+#define DRV260X_A_TO_V_MAX_OUT	0x15
+#define DRV260X_RATED_VOLT		0x16
+#define DRV260X_OD_CLAMP_VOLT	0x17
+#define DRV260X_CAL_COMP		0x18
+#define DRV260X_CAL_BACK_EMF	0x19
+#define DRV260X_FEEDBACK_CTRL	0x1a
+#define DRV260X_CTRL1			0x1b
+#define DRV260X_CTRL2			0x1c
+#define DRV260X_CTRL3			0x1d
+#define DRV260X_CTRL4			0x1e
+#define DRV260X_CTRL5			0x1f
+#define DRV260X_LRA_LOOP_PERIOD	0x20
+#define DRV260X_VBAT_MON		0x21
+#define DRV260X_LRA_RES_PERIOD	0x22
+#define DRV260X_MAX_REG			0x23
+
+#define DRV260X_GO_BIT				0x01
+
+/* Library Selection */
+#define DRV260X_LIB_SEL_MASK		0x07
+#define DRV260X_LIB_SEL_RAM			0x0
+#define DRV260X_LIB_SEL_OD			0x1
+#define DRV260X_LIB_SEL_40_60		0x2
+#define DRV260X_LIB_SEL_60_80		0x3
+#define DRV260X_LIB_SEL_100_140		0x4
+#define DRV260X_LIB_SEL_140_PLUS	0x5
+
+#define DRV260X_LIB_SEL_HIZ_MASK	0x10
+#define DRV260X_LIB_SEL_HIZ_EN		0x01
+#define DRV260X_LIB_SEL_HIZ_DIS		0
+
+/* Mode register */
+#define DRV260X_STANDBY				(1 << 6)
+#define DRV260X_STANDBY_MASK		0x40
+#define DRV260X_INTERNAL_TRIGGER	0x00
+#define DRV260X_EXT_TRIGGER_EDGE	0x01
+#define DRV260X_EXT_TRIGGER_LEVEL	0x02
+#define DRV260X_PWM_ANALOG_IN		0x03
+#define DRV260X_AUDIOHAPTIC			0x04
+#define DRV260X_RT_PLAYBACK			0x05
+#define DRV260X_DIAGNOSTICS			0x06
+#define DRV260X_AUTO_CAL			0x07
+
+/* Audio to Haptics Control */
+#define DRV260X_AUDIO_HAPTICS_PEAK_10MS		(0 << 2)
+#define DRV260X_AUDIO_HAPTICS_PEAK_20MS		(1 << 2)
+#define DRV260X_AUDIO_HAPTICS_PEAK_30MS		(2 << 2)
+#define DRV260X_AUDIO_HAPTICS_PEAK_40MS		(3 << 2)
+
+#define DRV260X_AUDIO_HAPTICS_FILTER_100HZ	0x00
+#define DRV260X_AUDIO_HAPTICS_FILTER_125HZ	0x01
+#define DRV260X_AUDIO_HAPTICS_FILTER_150HZ	0x02
+#define DRV260X_AUDIO_HAPTICS_FILTER_200HZ	0x03
+
+/* Min/Max Input/Output Voltages */
+#define DRV260X_AUDIO_HAPTICS_MIN_IN_VOLT	0x19
+#define DRV260X_AUDIO_HAPTICS_MAX_IN_VOLT	0x64
+#define DRV260X_AUDIO_HAPTICS_MIN_OUT_VOLT	0x19
+#define DRV260X_AUDIO_HAPTICS_MAX_OUT_VOLT	0xFF
+
+/* Feedback register */
+#define DRV260X_FB_REG_ERM_MODE			0x7f
+#define DRV260X_FB_REG_LRA_MODE			(1 << 7)
+
+#define DRV260X_BRAKE_FACTOR_MASK	0x1f
+#define DRV260X_BRAKE_FACTOR_2X		(1 << 0)
+#define DRV260X_BRAKE_FACTOR_3X		(2 << 4)
+#define DRV260X_BRAKE_FACTOR_4X		(3 << 4)
+#define DRV260X_BRAKE_FACTOR_6X		(4 << 4)
+#define DRV260X_BRAKE_FACTOR_8X		(5 << 4)
+#define DRV260X_BRAKE_FACTOR_16		(6 << 4)
+#define DRV260X_BRAKE_FACTOR_DIS	(7 << 4)
+
+#define DRV260X_LOOP_GAIN_LOW		0xf3
+#define DRV260X_LOOP_GAIN_MED		(1 << 2)
+#define DRV260X_LOOP_GAIN_HIGH		(2 << 2)
+#define DRV260X_LOOP_GAIN_VERY_HIGH	(3 << 2)
+
+#define DRV260X_BEMF_GAIN_0			0xfc
+#define DRV260X_BEMF_GAIN_1		(1 << 0)
+#define DRV260X_BEMF_GAIN_2		(2 << 0)
+#define DRV260X_BEMF_GAIN_3		(3 << 0)
+
+/* Control 1 register */
+#define DRV260X_AC_CPLE_EN			(1 << 5)
+#define DRV260X_STARTUP_BOOST		(1 << 7)
+
+/* Control 2 register */
+
+#define DRV260X_IDISS_TIME_45		0
+#define DRV260X_IDISS_TIME_75		(1 << 0)
+#define DRV260X_IDISS_TIME_150		(1 << 1)
+#define DRV260X_IDISS_TIME_225		0x03
+
+#define DRV260X_BLANK_TIME_45	(0 << 2)
+#define DRV260X_BLANK_TIME_75	(1 << 2)
+#define DRV260X_BLANK_TIME_150	(2 << 2)
+#define DRV260X_BLANK_TIME_225	(3 << 2)
+
+#define DRV260X_SAMP_TIME_150	(0 << 4)
+#define DRV260X_SAMP_TIME_200	(1 << 4)
+#define DRV260X_SAMP_TIME_250	(2 << 4)
+#define DRV260X_SAMP_TIME_300	(3 << 4)
+
+#define DRV260X_BRAKE_STABILIZER	(1 << 6)
+#define DRV260X_UNIDIR_IN			(0 << 7)
+#define DRV260X_BIDIR_IN			(1 << 7)
+
+/* Control 3 Register */
+#define DRV260X_LRA_OPEN_LOOP		(1 << 0)
+#define DRV260X_ANANLOG_IN			(1 << 1)
+#define DRV260X_LRA_DRV_MODE		(1 << 2)
+#define DRV260X_RTP_UNSIGNED_DATA	(1 << 3)
+#define DRV260X_SUPPLY_COMP_DIS		(1 << 4)
+#define DRV260X_ERM_OPEN_LOOP		(1 << 5)
+#define DRV260X_NG_THRESH_0			(0 << 6)
+#define DRV260X_NG_THRESH_2			(1 << 6)
+#define DRV260X_NG_THRESH_4			(2 << 6)
+#define DRV260X_NG_THRESH_8			(3 << 6)
+
+/* Control 4 Register */
+#define DRV260X_AUTOCAL_TIME_150MS		(0 << 4)
+#define DRV260X_AUTOCAL_TIME_250MS		(1 << 4)
+#define DRV260X_AUTOCAL_TIME_500MS		(2 << 4)
+#define DRV260X_AUTOCAL_TIME_1000MS		(3 << 4)
+
+/**
+ * struct drv260x_data -
+ * @input_dev: Pointer to the input device
+ * @client: Pointer to the I2C client
+ * @regmap: Register map of the device
+ * @work: Work item used to off load the enable/disable of the vibration
+ * @enable_gpio: Pointer to the gpio used for enable/disabling
+ * @regulator: Pointer to the regulator for the IC
+ * @magnitude: Magnitude of the vibration event
+ * @mode: The operating mode of the IC (LRA_NO_CAL, ERM or LRA)
+ * @library: The vibration library to be used
+ * @rated_voltage: The rated_voltage of the actuator
+ * @overdrive_voltage: The over drive voltage of the actuator
+**/
+struct drv260x_data {
+	struct input_dev *input_dev;
+	struct i2c_client *client;
+	struct regmap *regmap;
+	struct work_struct work;
+	struct gpio_desc *enable_gpio;
+	struct regulator *regulator;
+	u32 magnitude;
+	u32 mode;
+	u32 library;
+	int rated_voltage;
+	int overdrive_voltage;
+};
+
+static const struct reg_default drv260x_reg_defs[] = {
+	{ DRV260X_STATUS, 0xe0 },
+	{ DRV260X_MODE, 0x40 },
+	{ DRV260X_RT_PB_IN, 0x00 },
+	{ DRV260X_LIB_SEL, 0x00 },
+	{ DRV260X_WV_SEQ_1, 0x01 },
+	{ DRV260X_WV_SEQ_2, 0x00 },
+	{ DRV260X_WV_SEQ_3, 0x00 },
+	{ DRV260X_WV_SEQ_4, 0x00 },
+	{ DRV260X_WV_SEQ_5, 0x00 },
+	{ DRV260X_WV_SEQ_6, 0x00 },
+	{ DRV260X_WV_SEQ_7, 0x00 },
+	{ DRV260X_WV_SEQ_8, 0x00 },
+	{ DRV260X_GO, 0x00 },
+	{ DRV260X_OVERDRIVE_OFF, 0x00 },
+	{ DRV260X_SUSTAIN_P_OFF, 0x00 },
+	{ DRV260X_SUSTAIN_N_OFF, 0x00 },
+	{ DRV260X_BRAKE_OFF, 0x00 },
+	{ DRV260X_A_TO_V_CTRL, 0x05 },
+	{ DRV260X_A_TO_V_MIN_INPUT, 0x19 },
+	{ DRV260X_A_TO_V_MAX_INPUT, 0xff },
+	{ DRV260X_A_TO_V_MIN_OUT, 0x19 },
+	{ DRV260X_A_TO_V_MAX_OUT, 0xff },
+	{ DRV260X_RATED_VOLT, 0x3e },
+	{ DRV260X_OD_CLAMP_VOLT, 0x8c },
+	{ DRV260X_CAL_COMP, 0x0c },
+	{ DRV260X_CAL_BACK_EMF, 0x6c },
+	{ DRV260X_FEEDBACK_CTRL, 0x36 },
+	{ DRV260X_CTRL1, 0x93 },
+	{ DRV260X_CTRL2, 0xfa },
+	{ DRV260X_CTRL3, 0xa0 },
+	{ DRV260X_CTRL4, 0x20 },
+	{ DRV260X_CTRL5, 0x80 },
+	{ DRV260X_LRA_LOOP_PERIOD, 0x33 },
+	{ DRV260X_VBAT_MON, 0x00 },
+	{ DRV260X_LRA_RES_PERIOD, 0x00 },
+};
+
+#define DRV260X_DEF_RATED_VOLT		0x90
+#define DRV260X_DEF_OD_CLAMP_VOLT	0x90
+
+/*
+ * Rated and Overdriver Voltages:
+ * Calculated using the formula r = v * 255 / 5.6
+ * where r is what will be written to the register
+ * and v is the rated or overdriver voltage of the actuator
+ */
+static int drv260x_calculate_voltage(unsigned int voltage)
+{
+	return (voltage * 255 / 5600);
+}
+
+static void drv260x_worker(struct work_struct *work)
+{
+	struct drv260x_data *haptics = container_of(work, struct drv260x_data, work);
+	int error;
+
+	gpiod_set_value(haptics->enable_gpio, 1);
+	/* Data sheet says to wait 250us before trying to communicate */
+	udelay(250);
+
+	error = regmap_write(haptics->regmap,
+			     DRV260X_MODE, DRV260X_RT_PLAYBACK);
+	if (error) {
+		dev_err(&haptics->client->dev,
+			"Failed to write set mode: %d\n", error);
+	} else {
+		error = regmap_write(haptics->regmap,
+				     DRV260X_RT_PB_IN, haptics->magnitude);
+		if (error)
+			dev_err(&haptics->client->dev,
+				"Failed to set magnitude: %d\n", error);
+	}
+}
+
+static int drv260x_haptics_play(struct input_dev *input, void *data,
+				struct ff_effect *effect)
+{
+	struct drv260x_data *haptics = input_get_drvdata(input);
+
+	haptics->mode = DRV260X_LRA_NO_CAL_MODE;
+
+	if (effect->u.rumble.strong_magnitude > 0)
+		haptics->magnitude = effect->u.rumble.strong_magnitude;
+	else if (effect->u.rumble.weak_magnitude > 0)
+		haptics->magnitude = effect->u.rumble.weak_magnitude;
+	else
+		haptics->magnitude = 0;
+
+	schedule_work(&haptics->work);
+
+	return 0;
+}
+
+static void drv260x_close(struct input_dev *input)
+{
+	struct drv260x_data *haptics = input_get_drvdata(input);
+	int error;
+
+	cancel_work_sync(&haptics->work);
+
+	error = regmap_write(haptics->regmap, DRV260X_MODE, DRV260X_STANDBY);
+	if (error)
+		dev_err(&haptics->client->dev,
+			"Failed to enter standby mode: %d\n", error);
+
+	gpiod_set_value(haptics->enable_gpio, 0);
+}
+
+static const struct reg_sequence drv260x_lra_cal_regs[] = {
+	{ DRV260X_MODE, DRV260X_AUTO_CAL },
+	{ DRV260X_CTRL3, DRV260X_NG_THRESH_2 },
+	{ DRV260X_FEEDBACK_CTRL, DRV260X_FB_REG_LRA_MODE |
+		DRV260X_BRAKE_FACTOR_4X | DRV260X_LOOP_GAIN_HIGH },
+};
+
+static const struct reg_sequence drv260x_lra_init_regs[] = {
+	{ DRV260X_MODE, DRV260X_RT_PLAYBACK },
+	{ DRV260X_A_TO_V_CTRL, DRV260X_AUDIO_HAPTICS_PEAK_20MS |
+		DRV260X_AUDIO_HAPTICS_FILTER_125HZ },
+	{ DRV260X_A_TO_V_MIN_INPUT, DRV260X_AUDIO_HAPTICS_MIN_IN_VOLT },
+	{ DRV260X_A_TO_V_MAX_INPUT, DRV260X_AUDIO_HAPTICS_MAX_IN_VOLT },
+	{ DRV260X_A_TO_V_MIN_OUT, DRV260X_AUDIO_HAPTICS_MIN_OUT_VOLT },
+	{ DRV260X_A_TO_V_MAX_OUT, DRV260X_AUDIO_HAPTICS_MAX_OUT_VOLT },
+	{ DRV260X_FEEDBACK_CTRL, DRV260X_FB_REG_LRA_MODE |
+		DRV260X_BRAKE_FACTOR_2X | DRV260X_LOOP_GAIN_MED |
+		DRV260X_BEMF_GAIN_3 },
+	{ DRV260X_CTRL1, DRV260X_STARTUP_BOOST },
+	{ DRV260X_CTRL2, DRV260X_SAMP_TIME_250 },
+	{ DRV260X_CTRL3, DRV260X_NG_THRESH_2 | DRV260X_ANANLOG_IN },
+	{ DRV260X_CTRL4, DRV260X_AUTOCAL_TIME_500MS },
+};
+
+static const struct reg_sequence drv260x_erm_cal_regs[] = {
+	{ DRV260X_MODE, DRV260X_AUTO_CAL },
+	{ DRV260X_A_TO_V_MIN_INPUT, DRV260X_AUDIO_HAPTICS_MIN_IN_VOLT },
+	{ DRV260X_A_TO_V_MAX_INPUT, DRV260X_AUDIO_HAPTICS_MAX_IN_VOLT },
+	{ DRV260X_A_TO_V_MIN_OUT, DRV260X_AUDIO_HAPTICS_MIN_OUT_VOLT },
+	{ DRV260X_A_TO_V_MAX_OUT, DRV260X_AUDIO_HAPTICS_MAX_OUT_VOLT },
+	{ DRV260X_FEEDBACK_CTRL, DRV260X_BRAKE_FACTOR_3X |
+		DRV260X_LOOP_GAIN_MED | DRV260X_BEMF_GAIN_2 },
+	{ DRV260X_CTRL1, DRV260X_STARTUP_BOOST },
+	{ DRV260X_CTRL2, DRV260X_SAMP_TIME_250 | DRV260X_BLANK_TIME_75 |
+		DRV260X_IDISS_TIME_75 },
+	{ DRV260X_CTRL3, DRV260X_NG_THRESH_2 | DRV260X_ERM_OPEN_LOOP },
+	{ DRV260X_CTRL4, DRV260X_AUTOCAL_TIME_500MS },
+};
+
+static int drv260x_init(struct drv260x_data *haptics)
+{
+	int error;
+	unsigned int cal_buf;
+
+	error = regmap_write(haptics->regmap,
+			     DRV260X_RATED_VOLT, haptics->rated_voltage);
+	if (error) {
+		dev_err(&haptics->client->dev,
+			"Failed to write DRV260X_RATED_VOLT register: %d\n",
+			error);
+		return error;
+	}
+
+	error = regmap_write(haptics->regmap,
+			     DRV260X_OD_CLAMP_VOLT, haptics->overdrive_voltage);
+	if (error) {
+		dev_err(&haptics->client->dev,
+			"Failed to write DRV260X_OD_CLAMP_VOLT register: %d\n",
+			error);
+		return error;
+	}
+
+	switch (haptics->mode) {
+	case DRV260X_LRA_MODE:
+		error = regmap_register_patch(haptics->regmap,
+					      drv260x_lra_cal_regs,
+					      ARRAY_SIZE(drv260x_lra_cal_regs));
+		if (error) {
+			dev_err(&haptics->client->dev,
+				"Failed to write LRA calibration registers: %d\n",
+				error);
+			return error;
+		}
+
+		break;
+
+	case DRV260X_ERM_MODE:
+		error = regmap_register_patch(haptics->regmap,
+					      drv260x_erm_cal_regs,
+					      ARRAY_SIZE(drv260x_erm_cal_regs));
+		if (error) {
+			dev_err(&haptics->client->dev,
+				"Failed to write ERM calibration registers: %d\n",
+				error);
+			return error;
+		}
+
+		error = regmap_update_bits(haptics->regmap, DRV260X_LIB_SEL,
+					   DRV260X_LIB_SEL_MASK,
+					   haptics->library);
+		if (error) {
+			dev_err(&haptics->client->dev,
+				"Failed to write DRV260X_LIB_SEL register: %d\n",
+				error);
+			return error;
+		}
+
+		break;
+
+	default:
+		error = regmap_register_patch(haptics->regmap,
+					      drv260x_lra_init_regs,
+					      ARRAY_SIZE(drv260x_lra_init_regs));
+		if (error) {
+			dev_err(&haptics->client->dev,
+				"Failed to write LRA init registers: %d\n",
+				error);
+			return error;
+		}
+
+		error = regmap_update_bits(haptics->regmap, DRV260X_LIB_SEL,
+					   DRV260X_LIB_SEL_MASK,
+					   haptics->library);
+		if (error) {
+			dev_err(&haptics->client->dev,
+				"Failed to write DRV260X_LIB_SEL register: %d\n",
+				error);
+			return error;
+		}
+
+		/* No need to set GO bit here */
+		return 0;
+	}
+
+	error = regmap_write(haptics->regmap, DRV260X_GO, DRV260X_GO_BIT);
+	if (error) {
+		dev_err(&haptics->client->dev,
+			"Failed to write GO register: %d\n",
+			error);
+		return error;
+	}
+
+	do {
+		usleep_range(15000, 15500);
+		error = regmap_read(haptics->regmap, DRV260X_GO, &cal_buf);
+		if (error) {
+			dev_err(&haptics->client->dev,
+				"Failed to read GO register: %d\n",
+				error);
+			return error;
+		}
+	} while (cal_buf == DRV260X_GO_BIT);
+
+	return 0;
+}
+
+static const struct regmap_config drv260x_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+
+	.max_register = DRV260X_MAX_REG,
+	.reg_defaults = drv260x_reg_defs,
+	.num_reg_defaults = ARRAY_SIZE(drv260x_reg_defs),
+	.cache_type = REGCACHE_NONE,
+};
+
+static int drv260x_probe(struct i2c_client *client,
+			 const struct i2c_device_id *id)
+{
+	struct device *dev = &client->dev;
+	struct drv260x_data *haptics;
+	u32 voltage;
+	int error;
+
+	haptics = devm_kzalloc(dev, sizeof(*haptics), GFP_KERNEL);
+	if (!haptics)
+		return -ENOMEM;
+
+	error = device_property_read_u32(dev, "mode", &haptics->mode);
+	if (error) {
+		dev_err(dev, "Can't fetch 'mode' property: %d\n", error);
+		return error;
+	}
+
+	if (haptics->mode < DRV260X_LRA_MODE ||
+	    haptics->mode > DRV260X_ERM_MODE) {
+		dev_err(dev, "Vibrator mode is invalid: %i\n", haptics->mode);
+		return -EINVAL;
+	}
+
+	error = device_property_read_u32(dev, "library-sel", &haptics->library);
+	if (error) {
+		dev_err(dev, "Can't fetch 'library-sel' property: %d\n", error);
+		return error;
+	}
+
+	if (haptics->library < DRV260X_LIB_EMPTY ||
+	    haptics->library > DRV260X_ERM_LIB_F) {
+		dev_err(dev,
+			"Library value is invalid: %i\n", haptics->library);
+		return -EINVAL;
+	}
+
+	if (haptics->mode == DRV260X_LRA_MODE &&
+	    haptics->library != DRV260X_LIB_EMPTY &&
+	    haptics->library != DRV260X_LIB_LRA) {
+		dev_err(dev, "LRA Mode with ERM Library mismatch\n");
+		return -EINVAL;
+	}
+
+	if (haptics->mode == DRV260X_ERM_MODE &&
+	    (haptics->library == DRV260X_LIB_EMPTY ||
+	     haptics->library == DRV260X_LIB_LRA)) {
+		dev_err(dev, "ERM Mode with LRA Library mismatch\n");
+		return -EINVAL;
+	}
+
+	error = device_property_read_u32(dev, "vib-rated-mv", &voltage);
+	haptics->rated_voltage = error ? DRV260X_DEF_RATED_VOLT :
+					 drv260x_calculate_voltage(voltage);
+
+	error = device_property_read_u32(dev, "vib-overdrive-mv", &voltage);
+	haptics->overdrive_voltage = error ? DRV260X_DEF_OD_CLAMP_VOLT :
+					     drv260x_calculate_voltage(voltage);
+
+	haptics->regulator = devm_regulator_get(dev, "vbat");
+	if (IS_ERR(haptics->regulator)) {
+		error = PTR_ERR(haptics->regulator);
+		dev_err(dev, "unable to get regulator, error: %d\n", error);
+		return error;
+	}
+
+	haptics->enable_gpio = devm_gpiod_get_optional(dev, "enable",
+						       GPIOD_OUT_HIGH);
+	if (IS_ERR(haptics->enable_gpio))
+		return PTR_ERR(haptics->enable_gpio);
+
+	haptics->input_dev = devm_input_allocate_device(dev);
+	if (!haptics->input_dev) {
+		dev_err(dev, "Failed to allocate input device\n");
+		return -ENOMEM;
+	}
+
+	haptics->input_dev->name = "drv260x:haptics";
+	haptics->input_dev->close = drv260x_close;
+	input_set_drvdata(haptics->input_dev, haptics);
+	input_set_capability(haptics->input_dev, EV_FF, FF_RUMBLE);
+
+	error = input_ff_create_memless(haptics->input_dev, NULL,
+					drv260x_haptics_play);
+	if (error) {
+		dev_err(dev, "input_ff_create() failed: %d\n", error);
+		return error;
+	}
+
+	INIT_WORK(&haptics->work, drv260x_worker);
+
+	haptics->client = client;
+	i2c_set_clientdata(client, haptics);
+
+	haptics->regmap = devm_regmap_init_i2c(client, &drv260x_regmap_config);
+	if (IS_ERR(haptics->regmap)) {
+		error = PTR_ERR(haptics->regmap);
+		dev_err(dev, "Failed to allocate register map: %d\n", error);
+		return error;
+	}
+
+	error = drv260x_init(haptics);
+	if (error) {
+		dev_err(dev, "Device init failed: %d\n", error);
+		return error;
+	}
+
+	error = input_register_device(haptics->input_dev);
+	if (error) {
+		dev_err(dev, "couldn't register input device: %d\n", error);
+		return error;
+	}
+
+	return 0;
+}
+
+static int __maybe_unused drv260x_suspend(struct device *dev)
+{
+	struct drv260x_data *haptics = dev_get_drvdata(dev);
+	int ret = 0;
+
+	mutex_lock(&haptics->input_dev->mutex);
+
+	if (input_device_enabled(haptics->input_dev)) {
+		ret = regmap_update_bits(haptics->regmap,
+					 DRV260X_MODE,
+					 DRV260X_STANDBY_MASK,
+					 DRV260X_STANDBY);
+		if (ret) {
+			dev_err(dev, "Failed to set standby mode\n");
+			goto out;
+		}
+
+		gpiod_set_value(haptics->enable_gpio, 0);
+
+		ret = regulator_disable(haptics->regulator);
+		if (ret) {
+			dev_err(dev, "Failed to disable regulator\n");
+			regmap_update_bits(haptics->regmap,
+					   DRV260X_MODE,
+					   DRV260X_STANDBY_MASK, 0);
+		}
+	}
+out:
+	mutex_unlock(&haptics->input_dev->mutex);
+	return ret;
+}
+
+static int __maybe_unused drv260x_resume(struct device *dev)
+{
+	struct drv260x_data *haptics = dev_get_drvdata(dev);
+	int ret = 0;
+
+	mutex_lock(&haptics->input_dev->mutex);
+
+	if (input_device_enabled(haptics->input_dev)) {
+		ret = regulator_enable(haptics->regulator);
+		if (ret) {
+			dev_err(dev, "Failed to enable regulator\n");
+			goto out;
+		}
+
+		ret = regmap_update_bits(haptics->regmap,
+					 DRV260X_MODE,
+					 DRV260X_STANDBY_MASK, 0);
+		if (ret) {
+			dev_err(dev, "Failed to unset standby mode\n");
+			regulator_disable(haptics->regulator);
+			goto out;
+		}
+
+		gpiod_set_value(haptics->enable_gpio, 1);
+	}
+
+out:
+	mutex_unlock(&haptics->input_dev->mutex);
+	return ret;
+}
+
+static SIMPLE_DEV_PM_OPS(drv260x_pm_ops, drv260x_suspend, drv260x_resume);
+
+static const struct i2c_device_id drv260x_id[] = {
+	{ "drv2605l", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, drv260x_id);
+
+static const struct of_device_id drv260x_of_match[] = {
+	{ .compatible = "ti,drv2604", },
+	{ .compatible = "ti,drv2604l", },
+	{ .compatible = "ti,drv2605", },
+	{ .compatible = "ti,drv2605l", },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, drv260x_of_match);
+
+static struct i2c_driver drv260x_driver = {
+	.probe		= drv260x_probe,
+	.driver		= {
+		.name	= "drv260x-haptics",
+		.of_match_table = drv260x_of_match,
+		.pm	= &drv260x_pm_ops,
+	},
+	.id_table = drv260x_id,
+};
+module_i2c_driver(drv260x_driver);
+
+MODULE_DESCRIPTION("TI DRV260x haptics driver");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Dan Murphy <dmurphy@ti.com>");
diff --git a/drivers/input/misc/drv2665.c b/drivers/input/misc/drv2665.c
new file mode 100644
index 000000000..21913e808
--- /dev/null
+++ b/drivers/input/misc/drv2665.c
@@ -0,0 +1,313 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * DRV2665 haptics driver family
+ *
+ * Author: Dan Murphy <dmurphy@ti.com>
+ *
+ * Copyright: (C) 2015 Texas Instruments, Inc.
+ */
+
+#include <linux/i2c.h>
+#include <linux/input.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/regulator/consumer.h>
+
+/* Contol registers */
+#define DRV2665_STATUS	0x00
+#define DRV2665_CTRL_1	0x01
+#define DRV2665_CTRL_2	0x02
+#define DRV2665_FIFO	0x0b
+
+/* Status Register */
+#define DRV2665_FIFO_FULL		BIT(0)
+#define DRV2665_FIFO_EMPTY		BIT(1)
+
+/* Control 1 Register */
+#define DRV2665_25_VPP_GAIN		0x00
+#define DRV2665_50_VPP_GAIN		0x01
+#define DRV2665_75_VPP_GAIN		0x02
+#define DRV2665_100_VPP_GAIN		0x03
+#define DRV2665_DIGITAL_IN		0xfc
+#define DRV2665_ANALOG_IN		BIT(2)
+
+/* Control 2 Register */
+#define DRV2665_BOOST_EN		BIT(1)
+#define DRV2665_STANDBY			BIT(6)
+#define DRV2665_DEV_RST			BIT(7)
+#define DRV2665_5_MS_IDLE_TOUT		0x00
+#define DRV2665_10_MS_IDLE_TOUT		0x04
+#define DRV2665_15_MS_IDLE_TOUT		0x08
+#define DRV2665_20_MS_IDLE_TOUT		0x0c
+
+/**
+ * struct drv2665_data -
+ * @input_dev: Pointer to the input device
+ * @client: Pointer to the I2C client
+ * @regmap: Register map of the device
+ * @work: Work item used to off load the enable/disable of the vibration
+ * @regulator: Pointer to the regulator for the IC
+ */
+struct drv2665_data {
+	struct input_dev *input_dev;
+	struct i2c_client *client;
+	struct regmap *regmap;
+	struct work_struct work;
+	struct regulator *regulator;
+};
+
+/* 8kHz Sine wave to stream to the FIFO */
+static const u8 drv2665_sine_wave_form[] = {
+	0x00, 0x10, 0x20, 0x2e, 0x3c, 0x48, 0x53, 0x5b, 0x61, 0x65, 0x66,
+	0x65, 0x61, 0x5b, 0x53, 0x48, 0x3c, 0x2e, 0x20, 0x10,
+	0x00, 0xf0, 0xe0, 0xd2, 0xc4, 0xb8, 0xad, 0xa5, 0x9f, 0x9b, 0x9a,
+	0x9b, 0x9f, 0xa5, 0xad, 0xb8, 0xc4, 0xd2, 0xe0, 0xf0, 0x00,
+};
+
+static const struct reg_default drv2665_reg_defs[] = {
+	{ DRV2665_STATUS, 0x02 },
+	{ DRV2665_CTRL_1, 0x28 },
+	{ DRV2665_CTRL_2, 0x40 },
+	{ DRV2665_FIFO, 0x00 },
+};
+
+static void drv2665_worker(struct work_struct *work)
+{
+	struct drv2665_data *haptics =
+				container_of(work, struct drv2665_data, work);
+	unsigned int read_buf;
+	int error;
+
+	error = regmap_read(haptics->regmap, DRV2665_STATUS, &read_buf);
+	if (error) {
+		dev_err(&haptics->client->dev,
+			"Failed to read status: %d\n", error);
+		return;
+	}
+
+	if (read_buf & DRV2665_FIFO_EMPTY) {
+		error = regmap_bulk_write(haptics->regmap,
+					  DRV2665_FIFO,
+					  drv2665_sine_wave_form,
+					  ARRAY_SIZE(drv2665_sine_wave_form));
+		if (error) {
+			dev_err(&haptics->client->dev,
+				"Failed to write FIFO: %d\n", error);
+			return;
+		}
+	}
+}
+
+static int drv2665_haptics_play(struct input_dev *input, void *data,
+				struct ff_effect *effect)
+{
+	struct drv2665_data *haptics = input_get_drvdata(input);
+
+	schedule_work(&haptics->work);
+
+	return 0;
+}
+
+static void drv2665_close(struct input_dev *input)
+{
+	struct drv2665_data *haptics = input_get_drvdata(input);
+	int error;
+
+	cancel_work_sync(&haptics->work);
+
+	error = regmap_update_bits(haptics->regmap, DRV2665_CTRL_2,
+				   DRV2665_STANDBY, DRV2665_STANDBY);
+	if (error)
+		dev_err(&haptics->client->dev,
+			"Failed to enter standby mode: %d\n", error);
+}
+
+static const struct reg_sequence drv2665_init_regs[] = {
+	{ DRV2665_CTRL_2, 0 | DRV2665_10_MS_IDLE_TOUT },
+	{ DRV2665_CTRL_1, DRV2665_25_VPP_GAIN },
+};
+
+static int drv2665_init(struct drv2665_data *haptics)
+{
+	int error;
+
+	error = regmap_register_patch(haptics->regmap,
+				      drv2665_init_regs,
+				      ARRAY_SIZE(drv2665_init_regs));
+	if (error) {
+		dev_err(&haptics->client->dev,
+			"Failed to write init registers: %d\n",
+			error);
+		return error;
+	}
+
+	return 0;
+}
+
+static const struct regmap_config drv2665_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+
+	.max_register = DRV2665_FIFO,
+	.reg_defaults = drv2665_reg_defs,
+	.num_reg_defaults = ARRAY_SIZE(drv2665_reg_defs),
+	.cache_type = REGCACHE_NONE,
+};
+
+static int drv2665_probe(struct i2c_client *client,
+			 const struct i2c_device_id *id)
+{
+	struct drv2665_data *haptics;
+	int error;
+
+	haptics = devm_kzalloc(&client->dev, sizeof(*haptics), GFP_KERNEL);
+	if (!haptics)
+		return -ENOMEM;
+
+	haptics->regulator = devm_regulator_get(&client->dev, "vbat");
+	if (IS_ERR(haptics->regulator)) {
+		error = PTR_ERR(haptics->regulator);
+		dev_err(&client->dev,
+			"unable to get regulator, error: %d\n", error);
+		return error;
+	}
+
+	haptics->input_dev = devm_input_allocate_device(&client->dev);
+	if (!haptics->input_dev) {
+		dev_err(&client->dev, "Failed to allocate input device\n");
+		return -ENOMEM;
+	}
+
+	haptics->input_dev->name = "drv2665:haptics";
+	haptics->input_dev->dev.parent = client->dev.parent;
+	haptics->input_dev->close = drv2665_close;
+	input_set_drvdata(haptics->input_dev, haptics);
+	input_set_capability(haptics->input_dev, EV_FF, FF_RUMBLE);
+
+	error = input_ff_create_memless(haptics->input_dev, NULL,
+					drv2665_haptics_play);
+	if (error) {
+		dev_err(&client->dev, "input_ff_create() failed: %d\n",
+			error);
+		return error;
+	}
+
+	INIT_WORK(&haptics->work, drv2665_worker);
+
+	haptics->client = client;
+	i2c_set_clientdata(client, haptics);
+
+	haptics->regmap = devm_regmap_init_i2c(client, &drv2665_regmap_config);
+	if (IS_ERR(haptics->regmap)) {
+		error = PTR_ERR(haptics->regmap);
+		dev_err(&client->dev, "Failed to allocate register map: %d\n",
+			error);
+		return error;
+	}
+
+	error = drv2665_init(haptics);
+	if (error) {
+		dev_err(&client->dev, "Device init failed: %d\n", error);
+		return error;
+	}
+
+	error = input_register_device(haptics->input_dev);
+	if (error) {
+		dev_err(&client->dev, "couldn't register input device: %d\n",
+			error);
+		return error;
+	}
+
+	return 0;
+}
+
+static int __maybe_unused drv2665_suspend(struct device *dev)
+{
+	struct drv2665_data *haptics = dev_get_drvdata(dev);
+	int ret = 0;
+
+	mutex_lock(&haptics->input_dev->mutex);
+
+	if (input_device_enabled(haptics->input_dev)) {
+		ret = regmap_update_bits(haptics->regmap, DRV2665_CTRL_2,
+					 DRV2665_STANDBY, DRV2665_STANDBY);
+		if (ret) {
+			dev_err(dev, "Failed to set standby mode\n");
+			regulator_disable(haptics->regulator);
+			goto out;
+		}
+
+		ret = regulator_disable(haptics->regulator);
+		if (ret) {
+			dev_err(dev, "Failed to disable regulator\n");
+			regmap_update_bits(haptics->regmap,
+					   DRV2665_CTRL_2,
+					   DRV2665_STANDBY, 0);
+		}
+	}
+out:
+	mutex_unlock(&haptics->input_dev->mutex);
+	return ret;
+}
+
+static int __maybe_unused drv2665_resume(struct device *dev)
+{
+	struct drv2665_data *haptics = dev_get_drvdata(dev);
+	int ret = 0;
+
+	mutex_lock(&haptics->input_dev->mutex);
+
+	if (input_device_enabled(haptics->input_dev)) {
+		ret = regulator_enable(haptics->regulator);
+		if (ret) {
+			dev_err(dev, "Failed to enable regulator\n");
+			goto out;
+		}
+
+		ret = regmap_update_bits(haptics->regmap, DRV2665_CTRL_2,
+					 DRV2665_STANDBY, 0);
+		if (ret) {
+			dev_err(dev, "Failed to unset standby mode\n");
+			regulator_disable(haptics->regulator);
+			goto out;
+		}
+
+	}
+
+out:
+	mutex_unlock(&haptics->input_dev->mutex);
+	return ret;
+}
+
+static SIMPLE_DEV_PM_OPS(drv2665_pm_ops, drv2665_suspend, drv2665_resume);
+
+static const struct i2c_device_id drv2665_id[] = {
+	{ "drv2665", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, drv2665_id);
+
+#ifdef CONFIG_OF
+static const struct of_device_id drv2665_of_match[] = {
+	{ .compatible = "ti,drv2665", },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, drv2665_of_match);
+#endif
+
+static struct i2c_driver drv2665_driver = {
+	.probe		= drv2665_probe,
+	.driver		= {
+		.name	= "drv2665-haptics",
+		.of_match_table = of_match_ptr(drv2665_of_match),
+		.pm	= &drv2665_pm_ops,
+	},
+	.id_table = drv2665_id,
+};
+module_i2c_driver(drv2665_driver);
+
+MODULE_DESCRIPTION("TI DRV2665 haptics driver");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Dan Murphy <dmurphy@ti.com>");
diff --git a/drivers/input/misc/drv2667.c b/drivers/input/misc/drv2667.c
new file mode 100644
index 000000000..3f67b9b01
--- /dev/null
+++ b/drivers/input/misc/drv2667.c
@@ -0,0 +1,490 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * DRV2667 haptics driver family
+ *
+ * Author: Dan Murphy <dmurphy@ti.com>
+ *
+ * Copyright: (C) 2014 Texas Instruments, Inc.
+ */
+
+#include <linux/i2c.h>
+#include <linux/input.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/regulator/consumer.h>
+
+/* Contol registers */
+#define DRV2667_STATUS	0x00
+#define DRV2667_CTRL_1	0x01
+#define DRV2667_CTRL_2	0x02
+/* Waveform sequencer */
+#define DRV2667_WV_SEQ_0	0x03
+#define DRV2667_WV_SEQ_1	0x04
+#define DRV2667_WV_SEQ_2	0x05
+#define DRV2667_WV_SEQ_3	0x06
+#define DRV2667_WV_SEQ_4	0x07
+#define DRV2667_WV_SEQ_5	0x08
+#define DRV2667_WV_SEQ_6	0x09
+#define DRV2667_WV_SEQ_7	0x0A
+#define DRV2667_FIFO		0x0B
+#define DRV2667_PAGE		0xFF
+#define DRV2667_MAX_REG		DRV2667_PAGE
+
+#define DRV2667_PAGE_0		0x00
+#define DRV2667_PAGE_1		0x01
+#define DRV2667_PAGE_2		0x02
+#define DRV2667_PAGE_3		0x03
+#define DRV2667_PAGE_4		0x04
+#define DRV2667_PAGE_5		0x05
+#define DRV2667_PAGE_6		0x06
+#define DRV2667_PAGE_7		0x07
+#define DRV2667_PAGE_8		0x08
+
+/* RAM fields */
+#define DRV2667_RAM_HDR_SZ	0x0
+/* RAM Header addresses */
+#define DRV2667_RAM_START_HI	0x01
+#define DRV2667_RAM_START_LO	0x02
+#define DRV2667_RAM_STOP_HI		0x03
+#define DRV2667_RAM_STOP_LO		0x04
+#define DRV2667_RAM_REPEAT_CT	0x05
+/* RAM data addresses */
+#define DRV2667_RAM_AMP		0x06
+#define DRV2667_RAM_FREQ	0x07
+#define DRV2667_RAM_DURATION	0x08
+#define DRV2667_RAM_ENVELOPE	0x09
+
+/* Control 1 Register */
+#define DRV2667_25_VPP_GAIN		0x00
+#define DRV2667_50_VPP_GAIN		0x01
+#define DRV2667_75_VPP_GAIN		0x02
+#define DRV2667_100_VPP_GAIN	0x03
+#define DRV2667_DIGITAL_IN		0xfc
+#define DRV2667_ANALOG_IN		(1 << 2)
+
+/* Control 2 Register */
+#define DRV2667_GO			(1 << 0)
+#define DRV2667_STANDBY		(1 << 6)
+#define DRV2667_DEV_RST		(1 << 7)
+
+/* RAM Envelope settings */
+#define DRV2667_NO_ENV			0x00
+#define DRV2667_32_MS_ENV		0x01
+#define DRV2667_64_MS_ENV		0x02
+#define DRV2667_96_MS_ENV		0x03
+#define DRV2667_128_MS_ENV		0x04
+#define DRV2667_160_MS_ENV		0x05
+#define DRV2667_192_MS_ENV		0x06
+#define DRV2667_224_MS_ENV		0x07
+#define DRV2667_256_MS_ENV		0x08
+#define DRV2667_512_MS_ENV		0x09
+#define DRV2667_768_MS_ENV		0x0a
+#define DRV2667_1024_MS_ENV		0x0b
+#define DRV2667_1280_MS_ENV		0x0c
+#define DRV2667_1536_MS_ENV		0x0d
+#define DRV2667_1792_MS_ENV		0x0e
+#define DRV2667_2048_MS_ENV		0x0f
+
+/**
+ * struct drv2667_data -
+ * @input_dev: Pointer to the input device
+ * @client: Pointer to the I2C client
+ * @regmap: Register map of the device
+ * @work: Work item used to off load the enable/disable of the vibration
+ * @regulator: Pointer to the regulator for the IC
+ * @page: Page number
+ * @magnitude: Magnitude of the vibration event
+ * @frequency: Frequency of the vibration event
+**/
+struct drv2667_data {
+	struct input_dev *input_dev;
+	struct i2c_client *client;
+	struct regmap *regmap;
+	struct work_struct work;
+	struct regulator *regulator;
+	u32 page;
+	u32 magnitude;
+	u32 frequency;
+};
+
+static const struct reg_default drv2667_reg_defs[] = {
+	{ DRV2667_STATUS, 0x02 },
+	{ DRV2667_CTRL_1, 0x28 },
+	{ DRV2667_CTRL_2, 0x40 },
+	{ DRV2667_WV_SEQ_0, 0x00 },
+	{ DRV2667_WV_SEQ_1, 0x00 },
+	{ DRV2667_WV_SEQ_2, 0x00 },
+	{ DRV2667_WV_SEQ_3, 0x00 },
+	{ DRV2667_WV_SEQ_4, 0x00 },
+	{ DRV2667_WV_SEQ_5, 0x00 },
+	{ DRV2667_WV_SEQ_6, 0x00 },
+	{ DRV2667_WV_SEQ_7, 0x00 },
+	{ DRV2667_FIFO, 0x00 },
+	{ DRV2667_PAGE, 0x00 },
+};
+
+static int drv2667_set_waveform_freq(struct drv2667_data *haptics)
+{
+	unsigned int read_buf;
+	int freq;
+	int error;
+
+	/* Per the data sheet:
+	 * Sinusoid Frequency (Hz) = 7.8125 x Frequency
+	 */
+	freq = (haptics->frequency * 1000) / 78125;
+	if (freq <= 0) {
+		dev_err(&haptics->client->dev,
+			"ERROR: Frequency calculated to %i\n", freq);
+		return -EINVAL;
+	}
+
+	error = regmap_read(haptics->regmap, DRV2667_PAGE, &read_buf);
+	if (error) {
+		dev_err(&haptics->client->dev,
+			"Failed to read the page number: %d\n", error);
+		return -EIO;
+	}
+
+	if (read_buf == DRV2667_PAGE_0 ||
+		haptics->page != read_buf) {
+		error = regmap_write(haptics->regmap,
+				DRV2667_PAGE, haptics->page);
+		if (error) {
+			dev_err(&haptics->client->dev,
+				"Failed to set the page: %d\n", error);
+			return -EIO;
+		}
+	}
+
+	error = regmap_write(haptics->regmap, DRV2667_RAM_FREQ,	freq);
+	if (error)
+		dev_err(&haptics->client->dev,
+				"Failed to set the frequency: %d\n", error);
+
+	/* Reset back to original page */
+	if (read_buf == DRV2667_PAGE_0 ||
+		haptics->page != read_buf) {
+		error = regmap_write(haptics->regmap, DRV2667_PAGE, read_buf);
+		if (error) {
+			dev_err(&haptics->client->dev,
+				"Failed to set the page: %d\n", error);
+			return -EIO;
+		}
+	}
+
+	return error;
+}
+
+static void drv2667_worker(struct work_struct *work)
+{
+	struct drv2667_data *haptics = container_of(work, struct drv2667_data, work);
+	int error;
+
+	if (haptics->magnitude) {
+		error = regmap_write(haptics->regmap,
+				DRV2667_PAGE, haptics->page);
+		if (error) {
+			dev_err(&haptics->client->dev,
+				"Failed to set the page: %d\n", error);
+			return;
+		}
+
+		error = regmap_write(haptics->regmap, DRV2667_RAM_AMP,
+				haptics->magnitude);
+		if (error) {
+			dev_err(&haptics->client->dev,
+				"Failed to set the amplitude: %d\n", error);
+			return;
+		}
+
+		error = regmap_write(haptics->regmap,
+				DRV2667_PAGE, DRV2667_PAGE_0);
+		if (error) {
+			dev_err(&haptics->client->dev,
+				"Failed to set the page: %d\n", error);
+			return;
+		}
+
+		error = regmap_write(haptics->regmap,
+				DRV2667_CTRL_2, DRV2667_GO);
+		if (error) {
+			dev_err(&haptics->client->dev,
+				"Failed to set the GO bit: %d\n", error);
+		}
+	} else {
+		error = regmap_update_bits(haptics->regmap, DRV2667_CTRL_2,
+				DRV2667_GO, 0);
+		if (error) {
+			dev_err(&haptics->client->dev,
+				"Failed to unset the GO bit: %d\n", error);
+		}
+	}
+}
+
+static int drv2667_haptics_play(struct input_dev *input, void *data,
+				struct ff_effect *effect)
+{
+	struct drv2667_data *haptics = input_get_drvdata(input);
+
+	if (effect->u.rumble.strong_magnitude > 0)
+		haptics->magnitude = effect->u.rumble.strong_magnitude;
+	else if (effect->u.rumble.weak_magnitude > 0)
+		haptics->magnitude = effect->u.rumble.weak_magnitude;
+	else
+		haptics->magnitude = 0;
+
+	schedule_work(&haptics->work);
+
+	return 0;
+}
+
+static void drv2667_close(struct input_dev *input)
+{
+	struct drv2667_data *haptics = input_get_drvdata(input);
+	int error;
+
+	cancel_work_sync(&haptics->work);
+
+	error = regmap_update_bits(haptics->regmap, DRV2667_CTRL_2,
+				   DRV2667_STANDBY, DRV2667_STANDBY);
+	if (error)
+		dev_err(&haptics->client->dev,
+			"Failed to enter standby mode: %d\n", error);
+}
+
+static const struct reg_sequence drv2667_init_regs[] = {
+	{ DRV2667_CTRL_2, 0 },
+	{ DRV2667_CTRL_1, DRV2667_25_VPP_GAIN },
+	{ DRV2667_WV_SEQ_0, 1 },
+	{ DRV2667_WV_SEQ_1, 0 }
+};
+
+static const struct reg_sequence drv2667_page1_init[] = {
+	{ DRV2667_RAM_HDR_SZ, 0x05 },
+	{ DRV2667_RAM_START_HI, 0x80 },
+	{ DRV2667_RAM_START_LO, 0x06 },
+	{ DRV2667_RAM_STOP_HI, 0x00 },
+	{ DRV2667_RAM_STOP_LO, 0x09 },
+	{ DRV2667_RAM_REPEAT_CT, 0 },
+	{ DRV2667_RAM_DURATION, 0x05 },
+	{ DRV2667_RAM_ENVELOPE, DRV2667_NO_ENV },
+	{ DRV2667_RAM_AMP, 0x60 },
+};
+
+static int drv2667_init(struct drv2667_data *haptics)
+{
+	int error;
+
+	/* Set default haptic frequency to 195Hz on Page 1*/
+	haptics->frequency = 195;
+	haptics->page = DRV2667_PAGE_1;
+
+	error = regmap_register_patch(haptics->regmap,
+				      drv2667_init_regs,
+				      ARRAY_SIZE(drv2667_init_regs));
+	if (error) {
+		dev_err(&haptics->client->dev,
+			"Failed to write init registers: %d\n",
+			error);
+		return error;
+	}
+
+	error = regmap_write(haptics->regmap, DRV2667_PAGE, haptics->page);
+	if (error) {
+		dev_err(&haptics->client->dev, "Failed to set page: %d\n",
+			error);
+		goto error_out;
+	}
+
+	error = drv2667_set_waveform_freq(haptics);
+	if (error)
+		goto error_page;
+
+	error = regmap_register_patch(haptics->regmap,
+				      drv2667_page1_init,
+				      ARRAY_SIZE(drv2667_page1_init));
+	if (error) {
+		dev_err(&haptics->client->dev,
+			"Failed to write page registers: %d\n",
+			error);
+		return error;
+	}
+
+	error = regmap_write(haptics->regmap, DRV2667_PAGE, DRV2667_PAGE_0);
+	return error;
+
+error_page:
+	regmap_write(haptics->regmap, DRV2667_PAGE, DRV2667_PAGE_0);
+error_out:
+	return error;
+}
+
+static const struct regmap_config drv2667_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+
+	.max_register = DRV2667_MAX_REG,
+	.reg_defaults = drv2667_reg_defs,
+	.num_reg_defaults = ARRAY_SIZE(drv2667_reg_defs),
+	.cache_type = REGCACHE_NONE,
+};
+
+static int drv2667_probe(struct i2c_client *client,
+			 const struct i2c_device_id *id)
+{
+	struct drv2667_data *haptics;
+	int error;
+
+	haptics = devm_kzalloc(&client->dev, sizeof(*haptics), GFP_KERNEL);
+	if (!haptics)
+		return -ENOMEM;
+
+	haptics->regulator = devm_regulator_get(&client->dev, "vbat");
+	if (IS_ERR(haptics->regulator)) {
+		error = PTR_ERR(haptics->regulator);
+		dev_err(&client->dev,
+			"unable to get regulator, error: %d\n", error);
+		return error;
+	}
+
+	haptics->input_dev = devm_input_allocate_device(&client->dev);
+	if (!haptics->input_dev) {
+		dev_err(&client->dev, "Failed to allocate input device\n");
+		return -ENOMEM;
+	}
+
+	haptics->input_dev->name = "drv2667:haptics";
+	haptics->input_dev->dev.parent = client->dev.parent;
+	haptics->input_dev->close = drv2667_close;
+	input_set_drvdata(haptics->input_dev, haptics);
+	input_set_capability(haptics->input_dev, EV_FF, FF_RUMBLE);
+
+	error = input_ff_create_memless(haptics->input_dev, NULL,
+					drv2667_haptics_play);
+	if (error) {
+		dev_err(&client->dev, "input_ff_create() failed: %d\n",
+			error);
+		return error;
+	}
+
+	INIT_WORK(&haptics->work, drv2667_worker);
+
+	haptics->client = client;
+	i2c_set_clientdata(client, haptics);
+
+	haptics->regmap = devm_regmap_init_i2c(client, &drv2667_regmap_config);
+	if (IS_ERR(haptics->regmap)) {
+		error = PTR_ERR(haptics->regmap);
+		dev_err(&client->dev, "Failed to allocate register map: %d\n",
+			error);
+		return error;
+	}
+
+	error = drv2667_init(haptics);
+	if (error) {
+		dev_err(&client->dev, "Device init failed: %d\n", error);
+		return error;
+	}
+
+	error = input_register_device(haptics->input_dev);
+	if (error) {
+		dev_err(&client->dev, "couldn't register input device: %d\n",
+			error);
+		return error;
+	}
+
+	return 0;
+}
+
+static int __maybe_unused drv2667_suspend(struct device *dev)
+{
+	struct drv2667_data *haptics = dev_get_drvdata(dev);
+	int ret = 0;
+
+	mutex_lock(&haptics->input_dev->mutex);
+
+	if (input_device_enabled(haptics->input_dev)) {
+		ret = regmap_update_bits(haptics->regmap, DRV2667_CTRL_2,
+					 DRV2667_STANDBY, DRV2667_STANDBY);
+		if (ret) {
+			dev_err(dev, "Failed to set standby mode\n");
+			regulator_disable(haptics->regulator);
+			goto out;
+		}
+
+		ret = regulator_disable(haptics->regulator);
+		if (ret) {
+			dev_err(dev, "Failed to disable regulator\n");
+			regmap_update_bits(haptics->regmap,
+					   DRV2667_CTRL_2,
+					   DRV2667_STANDBY, 0);
+		}
+	}
+out:
+	mutex_unlock(&haptics->input_dev->mutex);
+	return ret;
+}
+
+static int __maybe_unused drv2667_resume(struct device *dev)
+{
+	struct drv2667_data *haptics = dev_get_drvdata(dev);
+	int ret = 0;
+
+	mutex_lock(&haptics->input_dev->mutex);
+
+	if (input_device_enabled(haptics->input_dev)) {
+		ret = regulator_enable(haptics->regulator);
+		if (ret) {
+			dev_err(dev, "Failed to enable regulator\n");
+			goto out;
+		}
+
+		ret = regmap_update_bits(haptics->regmap, DRV2667_CTRL_2,
+					 DRV2667_STANDBY, 0);
+		if (ret) {
+			dev_err(dev, "Failed to unset standby mode\n");
+			regulator_disable(haptics->regulator);
+			goto out;
+		}
+
+	}
+
+out:
+	mutex_unlock(&haptics->input_dev->mutex);
+	return ret;
+}
+
+static SIMPLE_DEV_PM_OPS(drv2667_pm_ops, drv2667_suspend, drv2667_resume);
+
+static const struct i2c_device_id drv2667_id[] = {
+	{ "drv2667", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, drv2667_id);
+
+#ifdef CONFIG_OF
+static const struct of_device_id drv2667_of_match[] = {
+	{ .compatible = "ti,drv2667", },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, drv2667_of_match);
+#endif
+
+static struct i2c_driver drv2667_driver = {
+	.probe		= drv2667_probe,
+	.driver		= {
+		.name	= "drv2667-haptics",
+		.of_match_table = of_match_ptr(drv2667_of_match),
+		.pm	= &drv2667_pm_ops,
+	},
+	.id_table = drv2667_id,
+};
+module_i2c_driver(drv2667_driver);
+
+MODULE_DESCRIPTION("TI DRV2667 haptics driver");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Dan Murphy <dmurphy@ti.com>");
diff --git a/drivers/input/misc/e3x0-button.c b/drivers/input/misc/e3x0-button.c
new file mode 100644
index 000000000..e2fde6e15
--- /dev/null
+++ b/drivers/input/misc/e3x0-button.c
@@ -0,0 +1,135 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2014, National Instruments Corp. All rights reserved.
+ *
+ * Driver for NI Ettus Research USRP E3x0 Button Driver
+ */
+
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/of.h>
+#include <linux/slab.h>
+
+static irqreturn_t e3x0_button_release_handler(int irq, void *data)
+{
+	struct input_dev *idev = data;
+
+	input_report_key(idev, KEY_POWER, 0);
+	input_sync(idev);
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t e3x0_button_press_handler(int irq, void *data)
+{
+	struct input_dev *idev = data;
+
+	input_report_key(idev, KEY_POWER, 1);
+	pm_wakeup_event(idev->dev.parent, 0);
+	input_sync(idev);
+
+	return IRQ_HANDLED;
+}
+
+static int __maybe_unused e3x0_button_suspend(struct device *dev)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+
+	if (device_may_wakeup(dev))
+		enable_irq_wake(platform_get_irq_byname(pdev, "press"));
+
+	return 0;
+}
+
+static int __maybe_unused e3x0_button_resume(struct device *dev)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+
+	if (device_may_wakeup(dev))
+		disable_irq_wake(platform_get_irq_byname(pdev, "press"));
+
+	return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(e3x0_button_pm_ops,
+			 e3x0_button_suspend, e3x0_button_resume);
+
+static int e3x0_button_probe(struct platform_device *pdev)
+{
+	struct input_dev *input;
+	int irq_press, irq_release;
+	int error;
+
+	irq_press = platform_get_irq_byname(pdev, "press");
+	if (irq_press < 0)
+		return irq_press;
+
+	irq_release = platform_get_irq_byname(pdev, "release");
+	if (irq_release < 0)
+		return irq_release;
+
+	input = devm_input_allocate_device(&pdev->dev);
+	if (!input)
+		return -ENOMEM;
+
+	input->name = "NI Ettus Research USRP E3x0 Button Driver";
+	input->phys = "e3x0_button/input0";
+	input->dev.parent = &pdev->dev;
+
+	input_set_capability(input, EV_KEY, KEY_POWER);
+
+	error = devm_request_irq(&pdev->dev, irq_press,
+				 e3x0_button_press_handler, 0,
+				 "e3x0-button", input);
+	if (error) {
+		dev_err(&pdev->dev, "Failed to request 'press' IRQ#%d: %d\n",
+			irq_press, error);
+		return error;
+	}
+
+	error = devm_request_irq(&pdev->dev, irq_release,
+				 e3x0_button_release_handler, 0,
+				 "e3x0-button", input);
+	if (error) {
+		dev_err(&pdev->dev, "Failed to request 'release' IRQ#%d: %d\n",
+			irq_release, error);
+		return error;
+	}
+
+	error = input_register_device(input);
+	if (error) {
+		dev_err(&pdev->dev, "Can't register input device: %d\n", error);
+		return error;
+	}
+
+	device_init_wakeup(&pdev->dev, 1);
+	return 0;
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id e3x0_button_match[] = {
+	{ .compatible = "ettus,e3x0-button", },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, e3x0_button_match);
+#endif
+
+static struct platform_driver e3x0_button_driver = {
+	.driver		= {
+		.name	= "e3x0-button",
+		.of_match_table = of_match_ptr(e3x0_button_match),
+		.pm	= &e3x0_button_pm_ops,
+	},
+	.probe		= e3x0_button_probe,
+};
+
+module_platform_driver(e3x0_button_driver);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Moritz Fischer <moritz.fischer@ettus.com>");
+MODULE_DESCRIPTION("NI Ettus Research USRP E3x0 Button driver");
+MODULE_ALIAS("platform:e3x0-button");
diff --git a/drivers/input/misc/gpio-beeper.c b/drivers/input/misc/gpio-beeper.c
new file mode 100644
index 000000000..d2d2954e2
--- /dev/null
+++ b/drivers/input/misc/gpio-beeper.c
@@ -0,0 +1,114 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Generic GPIO beeper driver
+ *
+ * Copyright (C) 2013-2014 Alexander Shiyan <shc_work@mail.ru>
+ */
+
+#include <linux/input.h>
+#include <linux/module.h>
+#include <linux/gpio/consumer.h>
+#include <linux/of.h>
+#include <linux/workqueue.h>
+#include <linux/platform_device.h>
+
+#define BEEPER_MODNAME		"gpio-beeper"
+
+struct gpio_beeper {
+	struct work_struct	work;
+	struct gpio_desc	*desc;
+	bool			beeping;
+};
+
+static void gpio_beeper_toggle(struct gpio_beeper *beep, bool on)
+{
+	gpiod_set_value_cansleep(beep->desc, on);
+}
+
+static void gpio_beeper_work(struct work_struct *work)
+{
+	struct gpio_beeper *beep = container_of(work, struct gpio_beeper, work);
+
+	gpio_beeper_toggle(beep, beep->beeping);
+}
+
+static int gpio_beeper_event(struct input_dev *dev, unsigned int type,
+			     unsigned int code, int value)
+{
+	struct gpio_beeper *beep = input_get_drvdata(dev);
+
+	if (type != EV_SND || code != SND_BELL)
+		return -ENOTSUPP;
+
+	if (value < 0)
+		return -EINVAL;
+
+	beep->beeping = value;
+	/* Schedule work to actually turn the beeper on or off */
+	schedule_work(&beep->work);
+
+	return 0;
+}
+
+static void gpio_beeper_close(struct input_dev *input)
+{
+	struct gpio_beeper *beep = input_get_drvdata(input);
+
+	cancel_work_sync(&beep->work);
+	gpio_beeper_toggle(beep, false);
+}
+
+static int gpio_beeper_probe(struct platform_device *pdev)
+{
+	struct gpio_beeper *beep;
+	struct input_dev *input;
+
+	beep = devm_kzalloc(&pdev->dev, sizeof(*beep), GFP_KERNEL);
+	if (!beep)
+		return -ENOMEM;
+
+	beep->desc = devm_gpiod_get(&pdev->dev, NULL, GPIOD_OUT_LOW);
+	if (IS_ERR(beep->desc))
+		return PTR_ERR(beep->desc);
+
+	input = devm_input_allocate_device(&pdev->dev);
+	if (!input)
+		return -ENOMEM;
+
+	INIT_WORK(&beep->work, gpio_beeper_work);
+
+	input->name		= pdev->name;
+	input->id.bustype	= BUS_HOST;
+	input->id.vendor	= 0x0001;
+	input->id.product	= 0x0001;
+	input->id.version	= 0x0100;
+	input->close		= gpio_beeper_close;
+	input->event		= gpio_beeper_event;
+
+	input_set_capability(input, EV_SND, SND_BELL);
+
+	input_set_drvdata(input, beep);
+
+	return input_register_device(input);
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id gpio_beeper_of_match[] = {
+	{ .compatible = BEEPER_MODNAME, },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, gpio_beeper_of_match);
+#endif
+
+static struct platform_driver gpio_beeper_platform_driver = {
+	.driver	= {
+		.name		= BEEPER_MODNAME,
+		.of_match_table	= of_match_ptr(gpio_beeper_of_match),
+	},
+	.probe	= gpio_beeper_probe,
+};
+module_platform_driver(gpio_beeper_platform_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Alexander Shiyan <shc_work@mail.ru>");
+MODULE_DESCRIPTION("Generic GPIO beeper driver");
diff --git a/drivers/input/misc/gpio-vibra.c b/drivers/input/misc/gpio-vibra.c
new file mode 100644
index 000000000..f79f75595
--- /dev/null
+++ b/drivers/input/misc/gpio-vibra.c
@@ -0,0 +1,207 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ *  GPIO vibrator driver
+ *
+ *  Copyright (C) 2019 Luca Weiss <luca@z3ntu.xyz>
+ *
+ *  Based on PWM vibrator driver:
+ *  Copyright (C) 2017 Collabora Ltd.
+ *
+ *  Based on previous work from:
+ *  Copyright (C) 2012 Dmitry Torokhov <dmitry.torokhov@gmail.com>
+ *
+ *  Based on PWM beeper driver:
+ *  Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de>
+ */
+
+#include <linux/gpio/consumer.h>
+#include <linux/input.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/property.h>
+#include <linux/regulator/consumer.h>
+#include <linux/slab.h>
+
+struct gpio_vibrator {
+	struct input_dev *input;
+	struct gpio_desc *gpio;
+	struct regulator *vcc;
+
+	struct work_struct play_work;
+	bool running;
+	bool vcc_on;
+};
+
+static int gpio_vibrator_start(struct gpio_vibrator *vibrator)
+{
+	struct device *pdev = vibrator->input->dev.parent;
+	int err;
+
+	if (!vibrator->vcc_on) {
+		err = regulator_enable(vibrator->vcc);
+		if (err) {
+			dev_err(pdev, "failed to enable regulator: %d\n", err);
+			return err;
+		}
+		vibrator->vcc_on = true;
+	}
+
+	gpiod_set_value_cansleep(vibrator->gpio, 1);
+
+	return 0;
+}
+
+static void gpio_vibrator_stop(struct gpio_vibrator *vibrator)
+{
+	gpiod_set_value_cansleep(vibrator->gpio, 0);
+
+	if (vibrator->vcc_on) {
+		regulator_disable(vibrator->vcc);
+		vibrator->vcc_on = false;
+	}
+}
+
+static void gpio_vibrator_play_work(struct work_struct *work)
+{
+	struct gpio_vibrator *vibrator =
+		container_of(work, struct gpio_vibrator, play_work);
+
+	if (vibrator->running)
+		gpio_vibrator_start(vibrator);
+	else
+		gpio_vibrator_stop(vibrator);
+}
+
+static int gpio_vibrator_play_effect(struct input_dev *dev, void *data,
+				     struct ff_effect *effect)
+{
+	struct gpio_vibrator *vibrator = input_get_drvdata(dev);
+	int level;
+
+	level = effect->u.rumble.strong_magnitude;
+	if (!level)
+		level = effect->u.rumble.weak_magnitude;
+
+	vibrator->running = level;
+	schedule_work(&vibrator->play_work);
+
+	return 0;
+}
+
+static void gpio_vibrator_close(struct input_dev *input)
+{
+	struct gpio_vibrator *vibrator = input_get_drvdata(input);
+
+	cancel_work_sync(&vibrator->play_work);
+	gpio_vibrator_stop(vibrator);
+	vibrator->running = false;
+}
+
+static int gpio_vibrator_probe(struct platform_device *pdev)
+{
+	struct gpio_vibrator *vibrator;
+	int err;
+
+	vibrator = devm_kzalloc(&pdev->dev, sizeof(*vibrator), GFP_KERNEL);
+	if (!vibrator)
+		return -ENOMEM;
+
+	vibrator->input = devm_input_allocate_device(&pdev->dev);
+	if (!vibrator->input)
+		return -ENOMEM;
+
+	vibrator->vcc = devm_regulator_get(&pdev->dev, "vcc");
+	err = PTR_ERR_OR_ZERO(vibrator->vcc);
+	if (err) {
+		if (err != -EPROBE_DEFER)
+			dev_err(&pdev->dev, "Failed to request regulator: %d\n",
+				err);
+		return err;
+	}
+
+	vibrator->gpio = devm_gpiod_get(&pdev->dev, "enable", GPIOD_OUT_LOW);
+	err = PTR_ERR_OR_ZERO(vibrator->gpio);
+	if (err) {
+		if (err != -EPROBE_DEFER)
+			dev_err(&pdev->dev, "Failed to request main gpio: %d\n",
+				err);
+		return err;
+	}
+
+	INIT_WORK(&vibrator->play_work, gpio_vibrator_play_work);
+
+	vibrator->input->name = "gpio-vibrator";
+	vibrator->input->id.bustype = BUS_HOST;
+	vibrator->input->close = gpio_vibrator_close;
+
+	input_set_drvdata(vibrator->input, vibrator);
+	input_set_capability(vibrator->input, EV_FF, FF_RUMBLE);
+
+	err = input_ff_create_memless(vibrator->input, NULL,
+				      gpio_vibrator_play_effect);
+	if (err) {
+		dev_err(&pdev->dev, "Couldn't create FF dev: %d\n", err);
+		return err;
+	}
+
+	err = input_register_device(vibrator->input);
+	if (err) {
+		dev_err(&pdev->dev, "Couldn't register input dev: %d\n", err);
+		return err;
+	}
+
+	platform_set_drvdata(pdev, vibrator);
+
+	return 0;
+}
+
+static int __maybe_unused gpio_vibrator_suspend(struct device *dev)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct gpio_vibrator *vibrator = platform_get_drvdata(pdev);
+
+	cancel_work_sync(&vibrator->play_work);
+	if (vibrator->running)
+		gpio_vibrator_stop(vibrator);
+
+	return 0;
+}
+
+static int __maybe_unused gpio_vibrator_resume(struct device *dev)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct gpio_vibrator *vibrator = platform_get_drvdata(pdev);
+
+	if (vibrator->running)
+		gpio_vibrator_start(vibrator);
+
+	return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(gpio_vibrator_pm_ops,
+			 gpio_vibrator_suspend, gpio_vibrator_resume);
+
+#ifdef CONFIG_OF
+static const struct of_device_id gpio_vibra_dt_match_table[] = {
+	{ .compatible = "gpio-vibrator" },
+	{}
+};
+MODULE_DEVICE_TABLE(of, gpio_vibra_dt_match_table);
+#endif
+
+static struct platform_driver gpio_vibrator_driver = {
+	.probe	= gpio_vibrator_probe,
+	.driver	= {
+		.name	= "gpio-vibrator",
+		.pm	= &gpio_vibrator_pm_ops,
+		.of_match_table = of_match_ptr(gpio_vibra_dt_match_table),
+	},
+};
+module_platform_driver(gpio_vibrator_driver);
+
+MODULE_AUTHOR("Luca Weiss <luca@z3ntu.xy>");
+MODULE_DESCRIPTION("GPIO vibrator driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:gpio-vibrator");
diff --git a/drivers/input/misc/gpio_decoder.c b/drivers/input/misc/gpio_decoder.c
new file mode 100644
index 000000000..ee668eba3
--- /dev/null
+++ b/drivers/input/misc/gpio_decoder.c
@@ -0,0 +1,132 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2016 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * A generic driver to read multiple gpio lines and translate the
+ * encoded numeric value into an input event.
+ */
+
+#include <linux/device.h>
+#include <linux/gpio/consumer.h>
+#include <linux/input.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+
+struct gpio_decoder {
+	struct gpio_descs *input_gpios;
+	struct device *dev;
+	u32 axis;
+	u32 last_stable;
+};
+
+static int gpio_decoder_get_gpios_state(struct gpio_decoder *decoder)
+{
+	struct gpio_descs *gpios = decoder->input_gpios;
+	unsigned int ret = 0;
+	int i, val;
+
+	for (i = 0; i < gpios->ndescs; i++) {
+		val = gpiod_get_value_cansleep(gpios->desc[i]);
+		if (val < 0) {
+			dev_err(decoder->dev,
+				"Error reading gpio %d: %d\n",
+				desc_to_gpio(gpios->desc[i]), val);
+			return val;
+		}
+
+		val = !!val;
+		ret = (ret << 1) | val;
+	}
+
+	return ret;
+}
+
+static void gpio_decoder_poll_gpios(struct input_dev *input)
+{
+	struct gpio_decoder *decoder = input_get_drvdata(input);
+	int state;
+
+	state = gpio_decoder_get_gpios_state(decoder);
+	if (state >= 0 && state != decoder->last_stable) {
+		input_report_abs(input, decoder->axis, state);
+		input_sync(input);
+		decoder->last_stable = state;
+	}
+}
+
+static int gpio_decoder_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct gpio_decoder *decoder;
+	struct input_dev *input;
+	u32  max;
+	int err;
+
+	decoder = devm_kzalloc(dev, sizeof(*decoder), GFP_KERNEL);
+	if (!decoder)
+		return -ENOMEM;
+
+	decoder->dev = dev;
+	device_property_read_u32(dev, "linux,axis", &decoder->axis);
+
+	decoder->input_gpios = devm_gpiod_get_array(dev, NULL, GPIOD_IN);
+	if (IS_ERR(decoder->input_gpios)) {
+		dev_err(dev, "unable to acquire input gpios\n");
+		return PTR_ERR(decoder->input_gpios);
+	}
+
+	if (decoder->input_gpios->ndescs < 2) {
+		dev_err(dev, "not enough gpios found\n");
+		return -EINVAL;
+	}
+
+	if (device_property_read_u32(dev, "decoder-max-value", &max))
+		max = (1U << decoder->input_gpios->ndescs) - 1;
+
+	input = devm_input_allocate_device(dev);
+	if (!input)
+		return -ENOMEM;
+
+	input_set_drvdata(input, decoder);
+
+	input->name = pdev->name;
+	input->id.bustype = BUS_HOST;
+	input_set_abs_params(input, decoder->axis, 0, max, 0, 0);
+
+	err = input_setup_polling(input, gpio_decoder_poll_gpios);
+	if (err) {
+		dev_err(dev, "failed to set up polling\n");
+		return err;
+	}
+
+	err = input_register_device(input);
+	if (err) {
+		dev_err(dev, "failed to register input device\n");
+		return err;
+	}
+
+	return 0;
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id gpio_decoder_of_match[] = {
+	{ .compatible = "gpio-decoder", },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, gpio_decoder_of_match);
+#endif
+
+static struct platform_driver gpio_decoder_driver = {
+	.probe		= gpio_decoder_probe,
+	.driver		= {
+		.name	= "gpio-decoder",
+		.of_match_table = of_match_ptr(gpio_decoder_of_match),
+	}
+};
+module_platform_driver(gpio_decoder_driver);
+
+MODULE_DESCRIPTION("GPIO decoder input driver");
+MODULE_AUTHOR("Vignesh R <vigneshr@ti.com>");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/input/misc/hisi_powerkey.c b/drivers/input/misc/hisi_powerkey.c
new file mode 100644
index 000000000..d3c293a95
--- /dev/null
+++ b/drivers/input/misc/hisi_powerkey.c
@@ -0,0 +1,129 @@
+/*
+ * Hisilicon PMIC powerkey driver
+ *
+ * Copyright (C) 2013 Hisilicon Ltd.
+ * Copyright (C) 2015, 2016 Linaro Ltd.
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License. See the file "COPYING" in the main directory of this
+ * archive for more details.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+#include <linux/reboot.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of_irq.h>
+#include <linux/input.h>
+#include <linux/slab.h>
+
+/* the held interrupt will trigger after 4 seconds */
+#define MAX_HELD_TIME	(4 * MSEC_PER_SEC)
+
+static irqreturn_t hi65xx_power_press_isr(int irq, void *q)
+{
+	struct input_dev *input = q;
+
+	pm_wakeup_event(input->dev.parent, MAX_HELD_TIME);
+	input_report_key(input, KEY_POWER, 1);
+	input_sync(input);
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t hi65xx_power_release_isr(int irq, void *q)
+{
+	struct input_dev *input = q;
+
+	pm_wakeup_event(input->dev.parent, MAX_HELD_TIME);
+	input_report_key(input, KEY_POWER, 0);
+	input_sync(input);
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t hi65xx_restart_toggle_isr(int irq, void *q)
+{
+	struct input_dev *input = q;
+	int value = test_bit(KEY_RESTART, input->key);
+
+	pm_wakeup_event(input->dev.parent, MAX_HELD_TIME);
+	input_report_key(input, KEY_RESTART, !value);
+	input_sync(input);
+
+	return IRQ_HANDLED;
+}
+
+static const struct {
+	const char *name;
+	irqreturn_t (*handler)(int irq, void *q);
+} hi65xx_irq_info[] = {
+	{ "down", hi65xx_power_press_isr },
+	{ "up", hi65xx_power_release_isr },
+	{ "hold 4s", hi65xx_restart_toggle_isr },
+};
+
+static int hi65xx_powerkey_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct input_dev *input;
+	int irq, i, error;
+
+	input = devm_input_allocate_device(dev);
+	if (!input) {
+		dev_err(dev, "failed to allocate input device\n");
+		return -ENOMEM;
+	}
+
+	input->phys = "hisi_on/input0";
+	input->name = "HISI 65xx PowerOn Key";
+
+	input_set_capability(input, EV_KEY, KEY_POWER);
+	input_set_capability(input, EV_KEY, KEY_RESTART);
+
+	for (i = 0; i < ARRAY_SIZE(hi65xx_irq_info); i++) {
+
+		irq = platform_get_irq_byname(pdev, hi65xx_irq_info[i].name);
+		if (irq < 0)
+			return irq;
+
+		error = devm_request_any_context_irq(dev, irq,
+						     hi65xx_irq_info[i].handler,
+						     IRQF_ONESHOT,
+						     hi65xx_irq_info[i].name,
+						     input);
+		if (error < 0) {
+			dev_err(dev, "couldn't request irq %s: %d\n",
+				hi65xx_irq_info[i].name, error);
+			return error;
+		}
+	}
+
+	error = input_register_device(input);
+	if (error) {
+		dev_err(dev, "failed to register input device: %d\n", error);
+		return error;
+	}
+
+	device_init_wakeup(dev, 1);
+
+	return 0;
+}
+
+static struct platform_driver hi65xx_powerkey_driver = {
+	.driver = {
+		.name = "hi65xx-powerkey",
+	},
+	.probe = hi65xx_powerkey_probe,
+};
+module_platform_driver(hi65xx_powerkey_driver);
+
+MODULE_AUTHOR("Zhiliang Xue <xuezhiliang@huawei.com");
+MODULE_DESCRIPTION("Hisi PMIC Power key driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/input/misc/hp_sdc_rtc.c b/drivers/input/misc/hp_sdc_rtc.c
new file mode 100644
index 000000000..199bc17dd
--- /dev/null
+++ b/drivers/input/misc/hp_sdc_rtc.c
@@ -0,0 +1,377 @@
+/*
+ * HP i8042 SDC + MSM-58321 BBRTC driver.
+ *
+ * Copyright (c) 2001 Brian S. Julin
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL").
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ *
+ * References:
+ * System Device Controller Microprocessor Firmware Theory of Operation
+ *      for Part Number 1820-4784 Revision B.  Dwg No. A-1820-4784-2
+ * efirtc.c by Stephane Eranian/Hewlett Packard
+ *
+ */
+
+#include <linux/hp_sdc.h>
+#include <linux/errno.h>
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/time.h>
+#include <linux/miscdevice.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/poll.h>
+#include <linux/rtc.h>
+#include <linux/mutex.h>
+#include <linux/semaphore.h>
+
+MODULE_AUTHOR("Brian S. Julin <bri@calyx.com>");
+MODULE_DESCRIPTION("HP i8042 SDC + MSM-58321 RTC Driver");
+MODULE_LICENSE("Dual BSD/GPL");
+
+#define RTC_VERSION "1.10d"
+
+static unsigned long epoch = 2000;
+
+static struct semaphore i8042tregs;
+
+static void hp_sdc_rtc_isr (int irq, void *dev_id, 
+			    uint8_t status, uint8_t data) 
+{
+	return;
+}
+
+static int hp_sdc_rtc_do_read_bbrtc (struct rtc_time *rtctm)
+{
+	struct semaphore tsem;
+	hp_sdc_transaction t;
+	uint8_t tseq[91];
+	int i;
+	
+	i = 0;
+	while (i < 91) {
+		tseq[i++] = HP_SDC_ACT_DATAREG |
+			HP_SDC_ACT_POSTCMD | HP_SDC_ACT_DATAIN;
+		tseq[i++] = 0x01;			/* write i8042[0x70] */
+	  	tseq[i]   = i / 7;			/* BBRTC reg address */
+		i++;
+		tseq[i++] = HP_SDC_CMD_DO_RTCR;		/* Trigger command   */
+		tseq[i++] = 2;		/* expect 1 stat/dat pair back.   */
+		i++; i++;               /* buffer for stat/dat pair       */
+	}
+	tseq[84] |= HP_SDC_ACT_SEMAPHORE;
+	t.endidx =		91;
+	t.seq =			tseq;
+	t.act.semaphore =	&tsem;
+	sema_init(&tsem, 0);
+	
+	if (hp_sdc_enqueue_transaction(&t)) return -1;
+	
+	/* Put ourselves to sleep for results. */
+	if (WARN_ON(down_interruptible(&tsem)))
+		return -1;
+	
+	/* Check for nonpresence of BBRTC */
+	if (!((tseq[83] | tseq[90] | tseq[69] | tseq[76] |
+	       tseq[55] | tseq[62] | tseq[34] | tseq[41] |
+	       tseq[20] | tseq[27] | tseq[6]  | tseq[13]) & 0x0f))
+		return -1;
+
+	memset(rtctm, 0, sizeof(struct rtc_time));
+	rtctm->tm_year = (tseq[83] & 0x0f) + (tseq[90] & 0x0f) * 10;
+	rtctm->tm_mon  = (tseq[69] & 0x0f) + (tseq[76] & 0x0f) * 10;
+	rtctm->tm_mday = (tseq[55] & 0x0f) + (tseq[62] & 0x0f) * 10;
+	rtctm->tm_wday = (tseq[48] & 0x0f);
+	rtctm->tm_hour = (tseq[34] & 0x0f) + (tseq[41] & 0x0f) * 10;
+	rtctm->tm_min  = (tseq[20] & 0x0f) + (tseq[27] & 0x0f) * 10;
+	rtctm->tm_sec  = (tseq[6]  & 0x0f) + (tseq[13] & 0x0f) * 10;
+	
+	return 0;
+}
+
+static int hp_sdc_rtc_read_bbrtc (struct rtc_time *rtctm)
+{
+	struct rtc_time tm, tm_last;
+	int i = 0;
+
+	/* MSM-58321 has no read latch, so must read twice and compare. */
+
+	if (hp_sdc_rtc_do_read_bbrtc(&tm_last)) return -1;
+	if (hp_sdc_rtc_do_read_bbrtc(&tm)) return -1;
+
+	while (memcmp(&tm, &tm_last, sizeof(struct rtc_time))) {
+		if (i++ > 4) return -1;
+		memcpy(&tm_last, &tm, sizeof(struct rtc_time));
+		if (hp_sdc_rtc_do_read_bbrtc(&tm)) return -1;
+	}
+
+	memcpy(rtctm, &tm, sizeof(struct rtc_time));
+
+	return 0;
+}
+
+
+static int64_t hp_sdc_rtc_read_i8042timer (uint8_t loadcmd, int numreg)
+{
+	hp_sdc_transaction t;
+	uint8_t tseq[26] = {
+		HP_SDC_ACT_PRECMD | HP_SDC_ACT_POSTCMD | HP_SDC_ACT_DATAIN,
+		0,
+		HP_SDC_CMD_READ_T1, 2, 0, 0,
+		HP_SDC_ACT_POSTCMD | HP_SDC_ACT_DATAIN, 
+		HP_SDC_CMD_READ_T2, 2, 0, 0,
+		HP_SDC_ACT_POSTCMD | HP_SDC_ACT_DATAIN, 
+		HP_SDC_CMD_READ_T3, 2, 0, 0,
+		HP_SDC_ACT_POSTCMD | HP_SDC_ACT_DATAIN, 
+		HP_SDC_CMD_READ_T4, 2, 0, 0,
+		HP_SDC_ACT_POSTCMD | HP_SDC_ACT_DATAIN, 
+		HP_SDC_CMD_READ_T5, 2, 0, 0
+	};
+
+	t.endidx = numreg * 5;
+
+	tseq[1] = loadcmd;
+	tseq[t.endidx - 4] |= HP_SDC_ACT_SEMAPHORE; /* numreg assumed > 1 */
+
+	t.seq =			tseq;
+	t.act.semaphore =	&i8042tregs;
+
+	/* Sleep if output regs in use. */
+	if (WARN_ON(down_interruptible(&i8042tregs)))
+		return -1;
+
+	if (hp_sdc_enqueue_transaction(&t)) {
+		up(&i8042tregs);
+		return -1;
+	}
+	
+	/* Sleep until results come back. */
+	if (WARN_ON(down_interruptible(&i8042tregs)))
+		return -1;
+
+	up(&i8042tregs);
+
+	return (tseq[5] | 
+		((uint64_t)(tseq[10]) << 8)  | ((uint64_t)(tseq[15]) << 16) |
+		((uint64_t)(tseq[20]) << 24) | ((uint64_t)(tseq[25]) << 32));
+}
+
+
+/* Read the i8042 real-time clock */
+static inline int hp_sdc_rtc_read_rt(struct timespec64 *res) {
+	int64_t raw;
+	uint32_t tenms; 
+	unsigned int days;
+
+	raw = hp_sdc_rtc_read_i8042timer(HP_SDC_CMD_LOAD_RT, 5);
+	if (raw < 0) return -1;
+
+	tenms = (uint32_t)raw & 0xffffff;
+	days  = (unsigned int)(raw >> 24) & 0xffff;
+
+	res->tv_nsec = (long)(tenms % 100) * 10000 * 1000;
+	res->tv_sec =  (tenms / 100) + (time64_t)days * 86400;
+
+	return 0;
+}
+
+
+/* Read the i8042 fast handshake timer */
+static inline int hp_sdc_rtc_read_fhs(struct timespec64 *res) {
+	int64_t raw;
+	unsigned int tenms;
+
+	raw = hp_sdc_rtc_read_i8042timer(HP_SDC_CMD_LOAD_FHS, 2);
+	if (raw < 0) return -1;
+
+	tenms = (unsigned int)raw & 0xffff;
+
+	res->tv_nsec = (long)(tenms % 100) * 10000 * 1000;
+	res->tv_sec  = (time64_t)(tenms / 100);
+
+	return 0;
+}
+
+
+/* Read the i8042 match timer (a.k.a. alarm) */
+static inline int hp_sdc_rtc_read_mt(struct timespec64 *res) {
+	int64_t raw;	
+	uint32_t tenms; 
+
+	raw = hp_sdc_rtc_read_i8042timer(HP_SDC_CMD_LOAD_MT, 3);
+	if (raw < 0) return -1;
+
+	tenms = (uint32_t)raw & 0xffffff;
+
+	res->tv_nsec = (long)(tenms % 100) * 10000 * 1000;
+	res->tv_sec  = (time64_t)(tenms / 100);
+
+	return 0;
+}
+
+
+/* Read the i8042 delay timer */
+static inline int hp_sdc_rtc_read_dt(struct timespec64 *res) {
+	int64_t raw;
+	uint32_t tenms;
+
+	raw = hp_sdc_rtc_read_i8042timer(HP_SDC_CMD_LOAD_DT, 3);
+	if (raw < 0) return -1;
+
+	tenms = (uint32_t)raw & 0xffffff;
+
+	res->tv_nsec = (long)(tenms % 100) * 10000 * 1000;
+	res->tv_sec  = (time64_t)(tenms / 100);
+
+	return 0;
+}
+
+
+/* Read the i8042 cycle timer (a.k.a. periodic) */
+static inline int hp_sdc_rtc_read_ct(struct timespec64 *res) {
+	int64_t raw;
+	uint32_t tenms;
+
+	raw = hp_sdc_rtc_read_i8042timer(HP_SDC_CMD_LOAD_CT, 3);
+	if (raw < 0) return -1;
+
+	tenms = (uint32_t)raw & 0xffffff;
+
+	res->tv_nsec = (long)(tenms % 100) * 10000 * 1000;
+	res->tv_sec  = (time64_t)(tenms / 100);
+
+	return 0;
+}
+
+static int hp_sdc_rtc_proc_show(struct seq_file *m, void *v)
+{
+#define YN(bit) ("no")
+#define NY(bit) ("yes")
+        struct rtc_time tm;
+	struct timespec64 tv;
+
+	memset(&tm, 0, sizeof(struct rtc_time));
+
+	if (hp_sdc_rtc_read_bbrtc(&tm)) {
+		seq_puts(m, "BBRTC\t\t: READ FAILED!\n");
+	} else {
+		seq_printf(m,
+			     "rtc_time\t: %ptRt\n"
+			     "rtc_date\t: %ptRd\n"
+			     "rtc_epoch\t: %04lu\n",
+			     &tm, &tm, epoch);
+	}
+
+	if (hp_sdc_rtc_read_rt(&tv)) {
+		seq_puts(m, "i8042 rtc\t: READ FAILED!\n");
+	} else {
+		seq_printf(m, "i8042 rtc\t: %lld.%02ld seconds\n",
+			     (s64)tv.tv_sec, (long)tv.tv_nsec/1000000L);
+	}
+
+	if (hp_sdc_rtc_read_fhs(&tv)) {
+		seq_puts(m, "handshake\t: READ FAILED!\n");
+	} else {
+		seq_printf(m, "handshake\t: %lld.%02ld seconds\n",
+			     (s64)tv.tv_sec, (long)tv.tv_nsec/1000000L);
+	}
+
+	if (hp_sdc_rtc_read_mt(&tv)) {
+		seq_puts(m, "alarm\t\t: READ FAILED!\n");
+	} else {
+		seq_printf(m, "alarm\t\t: %lld.%02ld seconds\n",
+			     (s64)tv.tv_sec, (long)tv.tv_nsec/1000000L);
+	}
+
+	if (hp_sdc_rtc_read_dt(&tv)) {
+		seq_puts(m, "delay\t\t: READ FAILED!\n");
+	} else {
+		seq_printf(m, "delay\t\t: %lld.%02ld seconds\n",
+			     (s64)tv.tv_sec, (long)tv.tv_nsec/1000000L);
+	}
+
+	if (hp_sdc_rtc_read_ct(&tv)) {
+		seq_puts(m, "periodic\t: READ FAILED!\n");
+	} else {
+		seq_printf(m, "periodic\t: %lld.%02ld seconds\n",
+			     (s64)tv.tv_sec, (long)tv.tv_nsec/1000000L);
+	}
+
+        seq_printf(m,
+                     "DST_enable\t: %s\n"
+                     "BCD\t\t: %s\n"
+                     "24hr\t\t: %s\n"
+                     "square_wave\t: %s\n"
+                     "alarm_IRQ\t: %s\n"
+                     "update_IRQ\t: %s\n"
+                     "periodic_IRQ\t: %s\n"
+		     "periodic_freq\t: %ld\n"
+                     "batt_status\t: %s\n",
+                     YN(RTC_DST_EN),
+                     NY(RTC_DM_BINARY),
+                     YN(RTC_24H),
+                     YN(RTC_SQWE),
+                     YN(RTC_AIE),
+                     YN(RTC_UIE),
+                     YN(RTC_PIE),
+                     1UL,
+                     1 ? "okay" : "dead");
+
+        return 0;
+#undef YN
+#undef NY
+}
+
+static int __init hp_sdc_rtc_init(void)
+{
+	int ret;
+
+#ifdef __mc68000__
+	if (!MACH_IS_HP300)
+		return -ENODEV;
+#endif
+
+	sema_init(&i8042tregs, 1);
+
+	if ((ret = hp_sdc_request_timer_irq(&hp_sdc_rtc_isr)))
+		return ret;
+
+        proc_create_single("driver/rtc", 0, NULL, hp_sdc_rtc_proc_show);
+
+	printk(KERN_INFO "HP i8042 SDC + MSM-58321 RTC support loaded "
+			 "(RTC v " RTC_VERSION ")\n");
+
+	return 0;
+}
+
+static void __exit hp_sdc_rtc_exit(void)
+{
+	remove_proc_entry ("driver/rtc", NULL);
+	hp_sdc_release_timer_irq(hp_sdc_rtc_isr);
+        printk(KERN_INFO "HP i8042 SDC + MSM-58321 RTC support unloaded\n");
+}
+
+module_init(hp_sdc_rtc_init);
+module_exit(hp_sdc_rtc_exit);
diff --git a/drivers/input/misc/ibm-panel.c b/drivers/input/misc/ibm-panel.c
new file mode 100644
index 000000000..a8fba0054
--- /dev/null
+++ b/drivers/input/misc/ibm-panel.c
@@ -0,0 +1,200 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) IBM Corporation 2020
+ */
+
+#include <linux/i2c.h>
+#include <linux/init.h>
+#include <linux/input.h>
+#include <linux/kernel.h>
+#include <linux/limits.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/spinlock.h>
+
+#define DEVICE_NAME		"ibm-panel"
+#define PANEL_KEYCODES_COUNT	3
+
+struct ibm_panel {
+	u8 idx;
+	u8 command[11];
+	u32 keycodes[PANEL_KEYCODES_COUNT];
+	spinlock_t lock;	/* protects writes to idx and command */
+	struct input_dev *input;
+};
+
+static u8 ibm_panel_calculate_checksum(struct ibm_panel *panel)
+{
+	u8 chksum;
+	u16 sum = 0;
+	unsigned int i;
+
+	for (i = 0; i < sizeof(panel->command) - 1; ++i) {
+		sum += panel->command[i];
+		if (sum & 0xff00) {
+			sum &= 0xff;
+			sum++;
+		}
+	}
+
+	chksum = sum & 0xff;
+	chksum = ~chksum;
+	chksum++;
+
+	return chksum;
+}
+
+static void ibm_panel_process_command(struct ibm_panel *panel)
+{
+	u8 button;
+	u8 chksum;
+
+	if (panel->command[0] != 0xff && panel->command[1] != 0xf0) {
+		dev_dbg(&panel->input->dev, "command invalid: %02x %02x\n",
+			panel->command[0], panel->command[1]);
+		return;
+	}
+
+	chksum = ibm_panel_calculate_checksum(panel);
+	if (chksum != panel->command[sizeof(panel->command) - 1]) {
+		dev_dbg(&panel->input->dev,
+			"command failed checksum: %u != %u\n", chksum,
+			panel->command[sizeof(panel->command) - 1]);
+		return;
+	}
+
+	button = panel->command[2] & 0xf;
+	if (button < PANEL_KEYCODES_COUNT) {
+		input_report_key(panel->input, panel->keycodes[button],
+				 !(panel->command[2] & 0x80));
+		input_sync(panel->input);
+	} else {
+		dev_dbg(&panel->input->dev, "unknown button %u\n",
+			button);
+	}
+}
+
+static int ibm_panel_i2c_slave_cb(struct i2c_client *client,
+				  enum i2c_slave_event event, u8 *val)
+{
+	unsigned long flags;
+	struct ibm_panel *panel = i2c_get_clientdata(client);
+
+	dev_dbg(&panel->input->dev, "event: %u data: %02x\n", event, *val);
+
+	spin_lock_irqsave(&panel->lock, flags);
+
+	switch (event) {
+	case I2C_SLAVE_STOP:
+		if (panel->idx == sizeof(panel->command))
+			ibm_panel_process_command(panel);
+		else
+			dev_dbg(&panel->input->dev,
+				"command incorrect size %u\n", panel->idx);
+		fallthrough;
+	case I2C_SLAVE_WRITE_REQUESTED:
+		panel->idx = 0;
+		break;
+	case I2C_SLAVE_WRITE_RECEIVED:
+		if (panel->idx < sizeof(panel->command))
+			panel->command[panel->idx++] = *val;
+		else
+			/*
+			 * The command is too long and therefore invalid, so set the index
+			 * to it's largest possible value. When a STOP is finally received,
+			 * the command will be rejected upon processing.
+			 */
+			panel->idx = U8_MAX;
+		break;
+	case I2C_SLAVE_READ_REQUESTED:
+	case I2C_SLAVE_READ_PROCESSED:
+		*val = 0xff;
+		break;
+	default:
+		break;
+	}
+
+	spin_unlock_irqrestore(&panel->lock, flags);
+
+	return 0;
+}
+
+static int ibm_panel_probe(struct i2c_client *client,
+			   const struct i2c_device_id *id)
+{
+	struct ibm_panel *panel;
+	int i;
+	int error;
+
+	panel = devm_kzalloc(&client->dev, sizeof(*panel), GFP_KERNEL);
+	if (!panel)
+		return -ENOMEM;
+
+	spin_lock_init(&panel->lock);
+
+	panel->input = devm_input_allocate_device(&client->dev);
+	if (!panel->input)
+		return -ENOMEM;
+
+	panel->input->name = client->name;
+	panel->input->id.bustype = BUS_I2C;
+
+	error = device_property_read_u32_array(&client->dev,
+					       "linux,keycodes",
+					       panel->keycodes,
+					       PANEL_KEYCODES_COUNT);
+	if (error) {
+		/*
+		 * Use gamepad buttons as defaults for compatibility with
+		 * existing applications.
+		 */
+		panel->keycodes[0] = BTN_NORTH;
+		panel->keycodes[1] = BTN_SOUTH;
+		panel->keycodes[2] = BTN_SELECT;
+	}
+
+	for (i = 0; i < PANEL_KEYCODES_COUNT; ++i)
+		input_set_capability(panel->input, EV_KEY, panel->keycodes[i]);
+
+	error = input_register_device(panel->input);
+	if (error) {
+		dev_err(&client->dev,
+			"Failed to register input device: %d\n", error);
+		return error;
+	}
+
+	i2c_set_clientdata(client, panel);
+	error = i2c_slave_register(client, ibm_panel_i2c_slave_cb);
+	if (error) {
+		dev_err(&client->dev,
+			"Failed to register as i2c slave: %d\n", error);
+		return error;
+	}
+
+	return 0;
+}
+
+static void ibm_panel_remove(struct i2c_client *client)
+{
+	i2c_slave_unregister(client);
+}
+
+static const struct of_device_id ibm_panel_match[] = {
+	{ .compatible = "ibm,op-panel" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, ibm_panel_match);
+
+static struct i2c_driver ibm_panel_driver = {
+	.driver = {
+		.name = DEVICE_NAME,
+		.of_match_table = ibm_panel_match,
+	},
+	.probe = ibm_panel_probe,
+	.remove = ibm_panel_remove,
+};
+module_i2c_driver(ibm_panel_driver);
+
+MODULE_AUTHOR("Eddie James <eajames@linux.ibm.com>");
+MODULE_DESCRIPTION("IBM Operation Panel Driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/misc/ideapad_slidebar.c b/drivers/input/misc/ideapad_slidebar.c
new file mode 100644
index 000000000..68f1c584d
--- /dev/null
+++ b/drivers/input/misc/ideapad_slidebar.c
@@ -0,0 +1,353 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Input driver for slidebars on some Lenovo IdeaPad laptops
+ *
+ * Copyright (C) 2013 Andrey Moiseev <o2g.org.ru@gmail.com>
+ *
+ * Reverse-engineered from Lenovo SlideNav software (SBarHook.dll).
+ *
+ * Trademarks are the property of their respective owners.
+ */
+
+/*
+ * Currently tested and works on:
+ *	Lenovo IdeaPad Y550
+ *	Lenovo IdeaPad Y550P
+ *
+ * Other models can be added easily. To test,
+ * load with 'force' parameter set 'true'.
+ *
+ * LEDs blinking and input mode are managed via sysfs,
+ * (hex, unsigned byte value):
+ * /sys/devices/platform/ideapad_slidebar/slidebar_mode
+ *
+ * The value is in byte range, however, I only figured out
+ * how bits 0b10011001 work. Some other bits, probably,
+ * are meaningfull too.
+ *
+ * Possible states:
+ *
+ * STD_INT, ONMOV_INT, OFF_INT, LAST_POLL, OFF_POLL
+ *
+ * Meaning:
+ *           released      touched
+ * STD       'heartbeat'   lights follow the finger
+ * ONMOV     no lights     lights follow the finger
+ * LAST      at last pos   lights follow the finger
+ * OFF       no lights     no lights
+ *
+ * INT       all input events are generated, interrupts are used
+ * POLL      no input events by default, to get them,
+ *	     send 0b10000000 (read below)
+ *
+ * Commands: write
+ *
+ * All      |  0b01001 -> STD_INT
+ * possible |  0b10001 -> ONMOV_INT
+ * states   |  0b01000 -> OFF_INT
+ *
+ *                      |  0b0 -> LAST_POLL
+ * STD_INT or ONMOV_INT |
+ *                      |  0b1 -> STD_INT
+ *
+ *                      |  0b0 -> OFF_POLL
+ * OFF_INT or OFF_POLL  |
+ *                      |  0b1 -> OFF_INT
+ *
+ * Any state |   0b10000000 ->  if the slidebar has updated data,
+ *				produce one input event (last position),
+ *				switch to respective POLL mode
+ *				(like 0x0), if not in POLL mode yet.
+ *
+ * Get current state: read
+ *
+ * masked by 0x11 read value means:
+ *
+ * 0x00   LAST
+ * 0x01   STD
+ * 0x10   OFF
+ * 0x11   ONMOV
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/dmi.h>
+#include <linux/spinlock.h>
+#include <linux/platform_device.h>
+#include <linux/input.h>
+#include <linux/io.h>
+#include <linux/ioport.h>
+#include <linux/i8042.h>
+#include <linux/serio.h>
+
+#define IDEAPAD_BASE	0xff29
+
+static bool force;
+module_param(force, bool, 0);
+MODULE_PARM_DESC(force, "Force driver load, ignore DMI data");
+
+static DEFINE_SPINLOCK(io_lock);
+
+static struct input_dev *slidebar_input_dev;
+static struct platform_device *slidebar_platform_dev;
+
+static u8 slidebar_pos_get(void)
+{
+	u8 res;
+	unsigned long flags;
+
+	spin_lock_irqsave(&io_lock, flags);
+	outb(0xf4, 0xff29);
+	outb(0xbf, 0xff2a);
+	res = inb(0xff2b);
+	spin_unlock_irqrestore(&io_lock, flags);
+
+	return res;
+}
+
+static u8 slidebar_mode_get(void)
+{
+	u8 res;
+	unsigned long flags;
+
+	spin_lock_irqsave(&io_lock, flags);
+	outb(0xf7, 0xff29);
+	outb(0x8b, 0xff2a);
+	res = inb(0xff2b);
+	spin_unlock_irqrestore(&io_lock, flags);
+
+	return res;
+}
+
+static void slidebar_mode_set(u8 mode)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&io_lock, flags);
+	outb(0xf7, 0xff29);
+	outb(0x8b, 0xff2a);
+	outb(mode, 0xff2b);
+	spin_unlock_irqrestore(&io_lock, flags);
+}
+
+static bool slidebar_i8042_filter(unsigned char data, unsigned char str,
+				  struct serio *port)
+{
+	static bool extended = false;
+
+	/* We are only interested in data coming form KBC port */
+	if (str & I8042_STR_AUXDATA)
+		return false;
+
+	/* Scancodes: e03b on move, e0bb on release. */
+	if (data == 0xe0) {
+		extended = true;
+		return true;
+	}
+
+	if (!extended)
+		return false;
+
+	extended = false;
+
+	if (likely((data & 0x7f) != 0x3b)) {
+		serio_interrupt(port, 0xe0, 0);
+		return false;
+	}
+
+	if (data & 0x80) {
+		input_report_key(slidebar_input_dev, BTN_TOUCH, 0);
+	} else {
+		input_report_key(slidebar_input_dev, BTN_TOUCH, 1);
+		input_report_abs(slidebar_input_dev, ABS_X, slidebar_pos_get());
+	}
+	input_sync(slidebar_input_dev);
+
+	return true;
+}
+
+static ssize_t show_slidebar_mode(struct device *dev,
+				  struct device_attribute *attr,
+				  char *buf)
+{
+	return sprintf(buf, "%x\n", slidebar_mode_get());
+}
+
+static ssize_t store_slidebar_mode(struct device *dev,
+				   struct device_attribute *attr,
+				   const char *buf, size_t count)
+{
+	u8 mode;
+	int error;
+
+	error = kstrtou8(buf, 0, &mode);
+	if (error)
+		return error;
+
+	slidebar_mode_set(mode);
+
+	return count;
+}
+
+static DEVICE_ATTR(slidebar_mode, S_IWUSR | S_IRUGO,
+		   show_slidebar_mode, store_slidebar_mode);
+
+static struct attribute *ideapad_attrs[] = {
+	&dev_attr_slidebar_mode.attr,
+	NULL
+};
+
+static struct attribute_group ideapad_attr_group = {
+	.attrs = ideapad_attrs
+};
+
+static const struct attribute_group *ideapad_attr_groups[] = {
+	&ideapad_attr_group,
+	NULL
+};
+
+static int __init ideapad_probe(struct platform_device* pdev)
+{
+	int err;
+
+	if (!request_region(IDEAPAD_BASE, 3, "ideapad_slidebar")) {
+		dev_err(&pdev->dev, "IO ports are busy\n");
+		return -EBUSY;
+	}
+
+	slidebar_input_dev = input_allocate_device();
+	if (!slidebar_input_dev) {
+		dev_err(&pdev->dev, "Failed to allocate input device\n");
+		err = -ENOMEM;
+		goto err_release_ports;
+	}
+
+	slidebar_input_dev->name = "IdeaPad Slidebar";
+	slidebar_input_dev->id.bustype = BUS_HOST;
+	slidebar_input_dev->dev.parent = &pdev->dev;
+	input_set_capability(slidebar_input_dev, EV_KEY, BTN_TOUCH);
+	input_set_capability(slidebar_input_dev, EV_ABS, ABS_X);
+	input_set_abs_params(slidebar_input_dev, ABS_X, 0, 0xff, 0, 0);
+
+	err = i8042_install_filter(slidebar_i8042_filter);
+	if (err) {
+		dev_err(&pdev->dev,
+			"Failed to install i8042 filter: %d\n", err);
+		goto err_free_dev;
+	}
+
+	err = input_register_device(slidebar_input_dev);
+	if (err) {
+		dev_err(&pdev->dev,
+			"Failed to register input device: %d\n", err);
+		goto err_remove_filter;
+	}
+
+	return 0;
+
+err_remove_filter:
+	i8042_remove_filter(slidebar_i8042_filter);
+err_free_dev:
+	input_free_device(slidebar_input_dev);
+err_release_ports:
+	release_region(IDEAPAD_BASE, 3);
+	return err;
+}
+
+static int ideapad_remove(struct platform_device *pdev)
+{
+	i8042_remove_filter(slidebar_i8042_filter);
+	input_unregister_device(slidebar_input_dev);
+	release_region(IDEAPAD_BASE, 3);
+
+	return 0;
+}
+
+static struct platform_driver slidebar_drv = {
+	.driver = {
+		.name = "ideapad_slidebar",
+	},
+	.remove = ideapad_remove,
+};
+
+static int __init ideapad_dmi_check(const struct dmi_system_id *id)
+{
+	pr_info("Laptop model '%s'\n", id->ident);
+	return 1;
+}
+
+static const struct dmi_system_id ideapad_dmi[] __initconst = {
+	{
+		.ident = "Lenovo IdeaPad Y550",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "20017"),
+			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo IdeaPad Y550")
+		},
+		.callback = ideapad_dmi_check
+	},
+	{
+		.ident = "Lenovo IdeaPad Y550P",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "20035"),
+			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo IdeaPad Y550P")
+		},
+		.callback = ideapad_dmi_check
+	},
+	{ NULL, }
+};
+MODULE_DEVICE_TABLE(dmi, ideapad_dmi);
+
+static int __init slidebar_init(void)
+{
+	int err;
+
+	if (!force && !dmi_check_system(ideapad_dmi)) {
+		pr_err("DMI does not match\n");
+		return -ENODEV;
+	}
+
+	slidebar_platform_dev = platform_device_alloc("ideapad_slidebar", -1);
+	if (!slidebar_platform_dev) {
+		pr_err("Not enough memory\n");
+		return -ENOMEM;
+	}
+
+	slidebar_platform_dev->dev.groups = ideapad_attr_groups;
+
+	err = platform_device_add(slidebar_platform_dev);
+	if (err) {
+		pr_err("Failed to register platform device\n");
+		goto err_free_dev;
+	}
+
+	err = platform_driver_probe(&slidebar_drv, ideapad_probe);
+	if (err) {
+		pr_err("Failed to register platform driver\n");
+		goto err_delete_dev;
+	}
+
+	return 0;
+
+err_delete_dev:
+	platform_device_del(slidebar_platform_dev);
+err_free_dev:
+	platform_device_put(slidebar_platform_dev);
+	return err;
+}
+
+static void __exit slidebar_exit(void)
+{
+	platform_device_unregister(slidebar_platform_dev);
+	platform_driver_unregister(&slidebar_drv);
+}
+
+module_init(slidebar_init);
+module_exit(slidebar_exit);
+
+MODULE_AUTHOR("Andrey Moiseev <o2g.org.ru@gmail.com>");
+MODULE_DESCRIPTION("Slidebar input support for some Lenovo IdeaPad laptops");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/misc/ims-pcu.c b/drivers/input/misc/ims-pcu.c
new file mode 100644
index 000000000..b2f1292e2
--- /dev/null
+++ b/drivers/input/misc/ims-pcu.c
@@ -0,0 +1,2149 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Driver for IMS Passenger Control Unit Devices
+ *
+ * Copyright (C) 2013 The IMS Company
+ */
+
+#include <linux/completion.h>
+#include <linux/device.h>
+#include <linux/firmware.h>
+#include <linux/ihex.h>
+#include <linux/input.h>
+#include <linux/kernel.h>
+#include <linux/leds.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/usb/input.h>
+#include <linux/usb/cdc.h>
+#include <asm/unaligned.h>
+
+#define IMS_PCU_KEYMAP_LEN		32
+
+struct ims_pcu_buttons {
+	struct input_dev *input;
+	char name[32];
+	char phys[32];
+	unsigned short keymap[IMS_PCU_KEYMAP_LEN];
+};
+
+struct ims_pcu_gamepad {
+	struct input_dev *input;
+	char name[32];
+	char phys[32];
+};
+
+struct ims_pcu_backlight {
+	struct led_classdev cdev;
+	char name[32];
+};
+
+#define IMS_PCU_PART_NUMBER_LEN		15
+#define IMS_PCU_SERIAL_NUMBER_LEN	8
+#define IMS_PCU_DOM_LEN			8
+#define IMS_PCU_FW_VERSION_LEN		(9 + 1)
+#define IMS_PCU_BL_VERSION_LEN		(9 + 1)
+#define IMS_PCU_BL_RESET_REASON_LEN	(2 + 1)
+
+#define IMS_PCU_PCU_B_DEVICE_ID		5
+
+#define IMS_PCU_BUF_SIZE		128
+
+struct ims_pcu {
+	struct usb_device *udev;
+	struct device *dev; /* control interface's device, used for logging */
+
+	unsigned int device_no;
+
+	bool bootloader_mode;
+
+	char part_number[IMS_PCU_PART_NUMBER_LEN];
+	char serial_number[IMS_PCU_SERIAL_NUMBER_LEN];
+	char date_of_manufacturing[IMS_PCU_DOM_LEN];
+	char fw_version[IMS_PCU_FW_VERSION_LEN];
+	char bl_version[IMS_PCU_BL_VERSION_LEN];
+	char reset_reason[IMS_PCU_BL_RESET_REASON_LEN];
+	int update_firmware_status;
+	u8 device_id;
+
+	u8 ofn_reg_addr;
+
+	struct usb_interface *ctrl_intf;
+
+	struct usb_endpoint_descriptor *ep_ctrl;
+	struct urb *urb_ctrl;
+	u8 *urb_ctrl_buf;
+	dma_addr_t ctrl_dma;
+	size_t max_ctrl_size;
+
+	struct usb_interface *data_intf;
+
+	struct usb_endpoint_descriptor *ep_in;
+	struct urb *urb_in;
+	u8 *urb_in_buf;
+	dma_addr_t read_dma;
+	size_t max_in_size;
+
+	struct usb_endpoint_descriptor *ep_out;
+	u8 *urb_out_buf;
+	size_t max_out_size;
+
+	u8 read_buf[IMS_PCU_BUF_SIZE];
+	u8 read_pos;
+	u8 check_sum;
+	bool have_stx;
+	bool have_dle;
+
+	u8 cmd_buf[IMS_PCU_BUF_SIZE];
+	u8 ack_id;
+	u8 expected_response;
+	u8 cmd_buf_len;
+	struct completion cmd_done;
+	struct mutex cmd_mutex;
+
+	u32 fw_start_addr;
+	u32 fw_end_addr;
+	struct completion async_firmware_done;
+
+	struct ims_pcu_buttons buttons;
+	struct ims_pcu_gamepad *gamepad;
+	struct ims_pcu_backlight backlight;
+
+	bool setup_complete; /* Input and LED devices have been created */
+};
+
+
+/*********************************************************************
+ *             Buttons Input device support                          *
+ *********************************************************************/
+
+static const unsigned short ims_pcu_keymap_1[] = {
+	[1] = KEY_ATTENDANT_OFF,
+	[2] = KEY_ATTENDANT_ON,
+	[3] = KEY_LIGHTS_TOGGLE,
+	[4] = KEY_VOLUMEUP,
+	[5] = KEY_VOLUMEDOWN,
+	[6] = KEY_INFO,
+};
+
+static const unsigned short ims_pcu_keymap_2[] = {
+	[4] = KEY_VOLUMEUP,
+	[5] = KEY_VOLUMEDOWN,
+	[6] = KEY_INFO,
+};
+
+static const unsigned short ims_pcu_keymap_3[] = {
+	[1] = KEY_HOMEPAGE,
+	[2] = KEY_ATTENDANT_TOGGLE,
+	[3] = KEY_LIGHTS_TOGGLE,
+	[4] = KEY_VOLUMEUP,
+	[5] = KEY_VOLUMEDOWN,
+	[6] = KEY_DISPLAYTOGGLE,
+	[18] = KEY_PLAYPAUSE,
+};
+
+static const unsigned short ims_pcu_keymap_4[] = {
+	[1] = KEY_ATTENDANT_OFF,
+	[2] = KEY_ATTENDANT_ON,
+	[3] = KEY_LIGHTS_TOGGLE,
+	[4] = KEY_VOLUMEUP,
+	[5] = KEY_VOLUMEDOWN,
+	[6] = KEY_INFO,
+	[18] = KEY_PLAYPAUSE,
+};
+
+static const unsigned short ims_pcu_keymap_5[] = {
+	[1] = KEY_ATTENDANT_OFF,
+	[2] = KEY_ATTENDANT_ON,
+	[3] = KEY_LIGHTS_TOGGLE,
+};
+
+struct ims_pcu_device_info {
+	const unsigned short *keymap;
+	size_t keymap_len;
+	bool has_gamepad;
+};
+
+#define IMS_PCU_DEVINFO(_n, _gamepad)				\
+	[_n] = {						\
+		.keymap = ims_pcu_keymap_##_n,			\
+		.keymap_len = ARRAY_SIZE(ims_pcu_keymap_##_n),	\
+		.has_gamepad = _gamepad,			\
+	}
+
+static const struct ims_pcu_device_info ims_pcu_device_info[] = {
+	IMS_PCU_DEVINFO(1, true),
+	IMS_PCU_DEVINFO(2, true),
+	IMS_PCU_DEVINFO(3, true),
+	IMS_PCU_DEVINFO(4, true),
+	IMS_PCU_DEVINFO(5, false),
+};
+
+static void ims_pcu_buttons_report(struct ims_pcu *pcu, u32 data)
+{
+	struct ims_pcu_buttons *buttons = &pcu->buttons;
+	struct input_dev *input = buttons->input;
+	int i;
+
+	for (i = 0; i < 32; i++) {
+		unsigned short keycode = buttons->keymap[i];
+
+		if (keycode != KEY_RESERVED)
+			input_report_key(input, keycode, data & (1UL << i));
+	}
+
+	input_sync(input);
+}
+
+static int ims_pcu_setup_buttons(struct ims_pcu *pcu,
+				 const unsigned short *keymap,
+				 size_t keymap_len)
+{
+	struct ims_pcu_buttons *buttons = &pcu->buttons;
+	struct input_dev *input;
+	int i;
+	int error;
+
+	input = input_allocate_device();
+	if (!input) {
+		dev_err(pcu->dev,
+			"Not enough memory for input input device\n");
+		return -ENOMEM;
+	}
+
+	snprintf(buttons->name, sizeof(buttons->name),
+		 "IMS PCU#%d Button Interface", pcu->device_no);
+
+	usb_make_path(pcu->udev, buttons->phys, sizeof(buttons->phys));
+	strlcat(buttons->phys, "/input0", sizeof(buttons->phys));
+
+	memcpy(buttons->keymap, keymap, sizeof(*keymap) * keymap_len);
+
+	input->name = buttons->name;
+	input->phys = buttons->phys;
+	usb_to_input_id(pcu->udev, &input->id);
+	input->dev.parent = &pcu->ctrl_intf->dev;
+
+	input->keycode = buttons->keymap;
+	input->keycodemax = ARRAY_SIZE(buttons->keymap);
+	input->keycodesize = sizeof(buttons->keymap[0]);
+
+	__set_bit(EV_KEY, input->evbit);
+	for (i = 0; i < IMS_PCU_KEYMAP_LEN; i++)
+		__set_bit(buttons->keymap[i], input->keybit);
+	__clear_bit(KEY_RESERVED, input->keybit);
+
+	error = input_register_device(input);
+	if (error) {
+		dev_err(pcu->dev,
+			"Failed to register buttons input device: %d\n",
+			error);
+		input_free_device(input);
+		return error;
+	}
+
+	buttons->input = input;
+	return 0;
+}
+
+static void ims_pcu_destroy_buttons(struct ims_pcu *pcu)
+{
+	struct ims_pcu_buttons *buttons = &pcu->buttons;
+
+	input_unregister_device(buttons->input);
+}
+
+
+/*********************************************************************
+ *             Gamepad Input device support                          *
+ *********************************************************************/
+
+static void ims_pcu_gamepad_report(struct ims_pcu *pcu, u32 data)
+{
+	struct ims_pcu_gamepad *gamepad = pcu->gamepad;
+	struct input_dev *input = gamepad->input;
+	int x, y;
+
+	x = !!(data & (1 << 14)) - !!(data & (1 << 13));
+	y = !!(data & (1 << 12)) - !!(data & (1 << 11));
+
+	input_report_abs(input, ABS_X, x);
+	input_report_abs(input, ABS_Y, y);
+
+	input_report_key(input, BTN_A, data & (1 << 7));
+	input_report_key(input, BTN_B, data & (1 << 8));
+	input_report_key(input, BTN_X, data & (1 << 9));
+	input_report_key(input, BTN_Y, data & (1 << 10));
+	input_report_key(input, BTN_START, data & (1 << 15));
+	input_report_key(input, BTN_SELECT, data & (1 << 16));
+
+	input_sync(input);
+}
+
+static int ims_pcu_setup_gamepad(struct ims_pcu *pcu)
+{
+	struct ims_pcu_gamepad *gamepad;
+	struct input_dev *input;
+	int error;
+
+	gamepad = kzalloc(sizeof(struct ims_pcu_gamepad), GFP_KERNEL);
+	input = input_allocate_device();
+	if (!gamepad || !input) {
+		dev_err(pcu->dev,
+			"Not enough memory for gamepad device\n");
+		error = -ENOMEM;
+		goto err_free_mem;
+	}
+
+	gamepad->input = input;
+
+	snprintf(gamepad->name, sizeof(gamepad->name),
+		 "IMS PCU#%d Gamepad Interface", pcu->device_no);
+
+	usb_make_path(pcu->udev, gamepad->phys, sizeof(gamepad->phys));
+	strlcat(gamepad->phys, "/input1", sizeof(gamepad->phys));
+
+	input->name = gamepad->name;
+	input->phys = gamepad->phys;
+	usb_to_input_id(pcu->udev, &input->id);
+	input->dev.parent = &pcu->ctrl_intf->dev;
+
+	__set_bit(EV_KEY, input->evbit);
+	__set_bit(BTN_A, input->keybit);
+	__set_bit(BTN_B, input->keybit);
+	__set_bit(BTN_X, input->keybit);
+	__set_bit(BTN_Y, input->keybit);
+	__set_bit(BTN_START, input->keybit);
+	__set_bit(BTN_SELECT, input->keybit);
+
+	__set_bit(EV_ABS, input->evbit);
+	input_set_abs_params(input, ABS_X, -1, 1, 0, 0);
+	input_set_abs_params(input, ABS_Y, -1, 1, 0, 0);
+
+	error = input_register_device(input);
+	if (error) {
+		dev_err(pcu->dev,
+			"Failed to register gamepad input device: %d\n",
+			error);
+		goto err_free_mem;
+	}
+
+	pcu->gamepad = gamepad;
+	return 0;
+
+err_free_mem:
+	input_free_device(input);
+	kfree(gamepad);
+	return error;
+}
+
+static void ims_pcu_destroy_gamepad(struct ims_pcu *pcu)
+{
+	struct ims_pcu_gamepad *gamepad = pcu->gamepad;
+
+	input_unregister_device(gamepad->input);
+	kfree(gamepad);
+}
+
+
+/*********************************************************************
+ *             PCU Communication protocol handling                   *
+ *********************************************************************/
+
+#define IMS_PCU_PROTOCOL_STX		0x02
+#define IMS_PCU_PROTOCOL_ETX		0x03
+#define IMS_PCU_PROTOCOL_DLE		0x10
+
+/* PCU commands */
+#define IMS_PCU_CMD_STATUS		0xa0
+#define IMS_PCU_CMD_PCU_RESET		0xa1
+#define IMS_PCU_CMD_RESET_REASON	0xa2
+#define IMS_PCU_CMD_SEND_BUTTONS	0xa3
+#define IMS_PCU_CMD_JUMP_TO_BTLDR	0xa4
+#define IMS_PCU_CMD_GET_INFO		0xa5
+#define IMS_PCU_CMD_SET_BRIGHTNESS	0xa6
+#define IMS_PCU_CMD_EEPROM		0xa7
+#define IMS_PCU_CMD_GET_FW_VERSION	0xa8
+#define IMS_PCU_CMD_GET_BL_VERSION	0xa9
+#define IMS_PCU_CMD_SET_INFO		0xab
+#define IMS_PCU_CMD_GET_BRIGHTNESS	0xac
+#define IMS_PCU_CMD_GET_DEVICE_ID	0xae
+#define IMS_PCU_CMD_SPECIAL_INFO	0xb0
+#define IMS_PCU_CMD_BOOTLOADER		0xb1	/* Pass data to bootloader */
+#define IMS_PCU_CMD_OFN_SET_CONFIG	0xb3
+#define IMS_PCU_CMD_OFN_GET_CONFIG	0xb4
+
+/* PCU responses */
+#define IMS_PCU_RSP_STATUS		0xc0
+#define IMS_PCU_RSP_PCU_RESET		0	/* Originally 0xc1 */
+#define IMS_PCU_RSP_RESET_REASON	0xc2
+#define IMS_PCU_RSP_SEND_BUTTONS	0xc3
+#define IMS_PCU_RSP_JUMP_TO_BTLDR	0	/* Originally 0xc4 */
+#define IMS_PCU_RSP_GET_INFO		0xc5
+#define IMS_PCU_RSP_SET_BRIGHTNESS	0xc6
+#define IMS_PCU_RSP_EEPROM		0xc7
+#define IMS_PCU_RSP_GET_FW_VERSION	0xc8
+#define IMS_PCU_RSP_GET_BL_VERSION	0xc9
+#define IMS_PCU_RSP_SET_INFO		0xcb
+#define IMS_PCU_RSP_GET_BRIGHTNESS	0xcc
+#define IMS_PCU_RSP_CMD_INVALID		0xcd
+#define IMS_PCU_RSP_GET_DEVICE_ID	0xce
+#define IMS_PCU_RSP_SPECIAL_INFO	0xd0
+#define IMS_PCU_RSP_BOOTLOADER		0xd1	/* Bootloader response */
+#define IMS_PCU_RSP_OFN_SET_CONFIG	0xd2
+#define IMS_PCU_RSP_OFN_GET_CONFIG	0xd3
+
+
+#define IMS_PCU_RSP_EVNT_BUTTONS	0xe0	/* Unsolicited, button state */
+#define IMS_PCU_GAMEPAD_MASK		0x0001ff80UL	/* Bits 7 through 16 */
+
+
+#define IMS_PCU_MIN_PACKET_LEN		3
+#define IMS_PCU_DATA_OFFSET		2
+
+#define IMS_PCU_CMD_WRITE_TIMEOUT	100 /* msec */
+#define IMS_PCU_CMD_RESPONSE_TIMEOUT	500 /* msec */
+
+static void ims_pcu_report_events(struct ims_pcu *pcu)
+{
+	u32 data = get_unaligned_be32(&pcu->read_buf[3]);
+
+	ims_pcu_buttons_report(pcu, data & ~IMS_PCU_GAMEPAD_MASK);
+	if (pcu->gamepad)
+		ims_pcu_gamepad_report(pcu, data);
+}
+
+static void ims_pcu_handle_response(struct ims_pcu *pcu)
+{
+	switch (pcu->read_buf[0]) {
+	case IMS_PCU_RSP_EVNT_BUTTONS:
+		if (likely(pcu->setup_complete))
+			ims_pcu_report_events(pcu);
+		break;
+
+	default:
+		/*
+		 * See if we got command completion.
+		 * If both the sequence and response code match save
+		 * the data and signal completion.
+		 */
+		if (pcu->read_buf[0] == pcu->expected_response &&
+		    pcu->read_buf[1] == pcu->ack_id - 1) {
+
+			memcpy(pcu->cmd_buf, pcu->read_buf, pcu->read_pos);
+			pcu->cmd_buf_len = pcu->read_pos;
+			complete(&pcu->cmd_done);
+		}
+		break;
+	}
+}
+
+static void ims_pcu_process_data(struct ims_pcu *pcu, struct urb *urb)
+{
+	int i;
+
+	for (i = 0; i < urb->actual_length; i++) {
+		u8 data = pcu->urb_in_buf[i];
+
+		/* Skip everything until we get Start Xmit */
+		if (!pcu->have_stx && data != IMS_PCU_PROTOCOL_STX)
+			continue;
+
+		if (pcu->have_dle) {
+			pcu->have_dle = false;
+			pcu->read_buf[pcu->read_pos++] = data;
+			pcu->check_sum += data;
+			continue;
+		}
+
+		switch (data) {
+		case IMS_PCU_PROTOCOL_STX:
+			if (pcu->have_stx)
+				dev_warn(pcu->dev,
+					 "Unexpected STX at byte %d, discarding old data\n",
+					 pcu->read_pos);
+			pcu->have_stx = true;
+			pcu->have_dle = false;
+			pcu->read_pos = 0;
+			pcu->check_sum = 0;
+			break;
+
+		case IMS_PCU_PROTOCOL_DLE:
+			pcu->have_dle = true;
+			break;
+
+		case IMS_PCU_PROTOCOL_ETX:
+			if (pcu->read_pos < IMS_PCU_MIN_PACKET_LEN) {
+				dev_warn(pcu->dev,
+					 "Short packet received (%d bytes), ignoring\n",
+					 pcu->read_pos);
+			} else if (pcu->check_sum != 0) {
+				dev_warn(pcu->dev,
+					 "Invalid checksum in packet (%d bytes), ignoring\n",
+					 pcu->read_pos);
+			} else {
+				ims_pcu_handle_response(pcu);
+			}
+
+			pcu->have_stx = false;
+			pcu->have_dle = false;
+			pcu->read_pos = 0;
+			break;
+
+		default:
+			pcu->read_buf[pcu->read_pos++] = data;
+			pcu->check_sum += data;
+			break;
+		}
+	}
+}
+
+static bool ims_pcu_byte_needs_escape(u8 byte)
+{
+	return byte == IMS_PCU_PROTOCOL_STX ||
+	       byte == IMS_PCU_PROTOCOL_ETX ||
+	       byte == IMS_PCU_PROTOCOL_DLE;
+}
+
+static int ims_pcu_send_cmd_chunk(struct ims_pcu *pcu,
+				  u8 command, int chunk, int len)
+{
+	int error;
+
+	error = usb_bulk_msg(pcu->udev,
+			     usb_sndbulkpipe(pcu->udev,
+					     pcu->ep_out->bEndpointAddress),
+			     pcu->urb_out_buf, len,
+			     NULL, IMS_PCU_CMD_WRITE_TIMEOUT);
+	if (error < 0) {
+		dev_dbg(pcu->dev,
+			"Sending 0x%02x command failed at chunk %d: %d\n",
+			command, chunk, error);
+		return error;
+	}
+
+	return 0;
+}
+
+static int ims_pcu_send_command(struct ims_pcu *pcu,
+				u8 command, const u8 *data, int len)
+{
+	int count = 0;
+	int chunk = 0;
+	int delta;
+	int i;
+	int error;
+	u8 csum = 0;
+	u8 ack_id;
+
+	pcu->urb_out_buf[count++] = IMS_PCU_PROTOCOL_STX;
+
+	/* We know the command need not be escaped */
+	pcu->urb_out_buf[count++] = command;
+	csum += command;
+
+	ack_id = pcu->ack_id++;
+	if (ack_id == 0xff)
+		ack_id = pcu->ack_id++;
+
+	if (ims_pcu_byte_needs_escape(ack_id))
+		pcu->urb_out_buf[count++] = IMS_PCU_PROTOCOL_DLE;
+
+	pcu->urb_out_buf[count++] = ack_id;
+	csum += ack_id;
+
+	for (i = 0; i < len; i++) {
+
+		delta = ims_pcu_byte_needs_escape(data[i]) ? 2 : 1;
+		if (count + delta >= pcu->max_out_size) {
+			error = ims_pcu_send_cmd_chunk(pcu, command,
+						       ++chunk, count);
+			if (error)
+				return error;
+
+			count = 0;
+		}
+
+		if (delta == 2)
+			pcu->urb_out_buf[count++] = IMS_PCU_PROTOCOL_DLE;
+
+		pcu->urb_out_buf[count++] = data[i];
+		csum += data[i];
+	}
+
+	csum = 1 + ~csum;
+
+	delta = ims_pcu_byte_needs_escape(csum) ? 3 : 2;
+	if (count + delta >= pcu->max_out_size) {
+		error = ims_pcu_send_cmd_chunk(pcu, command, ++chunk, count);
+		if (error)
+			return error;
+
+		count = 0;
+	}
+
+	if (delta == 3)
+		pcu->urb_out_buf[count++] = IMS_PCU_PROTOCOL_DLE;
+
+	pcu->urb_out_buf[count++] = csum;
+	pcu->urb_out_buf[count++] = IMS_PCU_PROTOCOL_ETX;
+
+	return ims_pcu_send_cmd_chunk(pcu, command, ++chunk, count);
+}
+
+static int __ims_pcu_execute_command(struct ims_pcu *pcu,
+				     u8 command, const void *data, size_t len,
+				     u8 expected_response, int response_time)
+{
+	int error;
+
+	pcu->expected_response = expected_response;
+	init_completion(&pcu->cmd_done);
+
+	error = ims_pcu_send_command(pcu, command, data, len);
+	if (error)
+		return error;
+
+	if (expected_response &&
+	    !wait_for_completion_timeout(&pcu->cmd_done,
+					 msecs_to_jiffies(response_time))) {
+		dev_dbg(pcu->dev, "Command 0x%02x timed out\n", command);
+		return -ETIMEDOUT;
+	}
+
+	return 0;
+}
+
+#define ims_pcu_execute_command(pcu, code, data, len)			\
+	__ims_pcu_execute_command(pcu,					\
+				  IMS_PCU_CMD_##code, data, len,	\
+				  IMS_PCU_RSP_##code,			\
+				  IMS_PCU_CMD_RESPONSE_TIMEOUT)
+
+#define ims_pcu_execute_query(pcu, code)				\
+	ims_pcu_execute_command(pcu, code, NULL, 0)
+
+/* Bootloader commands */
+#define IMS_PCU_BL_CMD_QUERY_DEVICE	0xa1
+#define IMS_PCU_BL_CMD_UNLOCK_CONFIG	0xa2
+#define IMS_PCU_BL_CMD_ERASE_APP	0xa3
+#define IMS_PCU_BL_CMD_PROGRAM_DEVICE	0xa4
+#define IMS_PCU_BL_CMD_PROGRAM_COMPLETE	0xa5
+#define IMS_PCU_BL_CMD_READ_APP		0xa6
+#define IMS_PCU_BL_CMD_RESET_DEVICE	0xa7
+#define IMS_PCU_BL_CMD_LAUNCH_APP	0xa8
+
+/* Bootloader commands */
+#define IMS_PCU_BL_RSP_QUERY_DEVICE	0xc1
+#define IMS_PCU_BL_RSP_UNLOCK_CONFIG	0xc2
+#define IMS_PCU_BL_RSP_ERASE_APP	0xc3
+#define IMS_PCU_BL_RSP_PROGRAM_DEVICE	0xc4
+#define IMS_PCU_BL_RSP_PROGRAM_COMPLETE	0xc5
+#define IMS_PCU_BL_RSP_READ_APP		0xc6
+#define IMS_PCU_BL_RSP_RESET_DEVICE	0	/* originally 0xa7 */
+#define IMS_PCU_BL_RSP_LAUNCH_APP	0	/* originally 0xa8 */
+
+#define IMS_PCU_BL_DATA_OFFSET		3
+
+static int __ims_pcu_execute_bl_command(struct ims_pcu *pcu,
+					u8 command, const void *data, size_t len,
+					u8 expected_response, int response_time)
+{
+	int error;
+
+	pcu->cmd_buf[0] = command;
+	if (data)
+		memcpy(&pcu->cmd_buf[1], data, len);
+
+	error = __ims_pcu_execute_command(pcu,
+				IMS_PCU_CMD_BOOTLOADER, pcu->cmd_buf, len + 1,
+				expected_response ? IMS_PCU_RSP_BOOTLOADER : 0,
+				response_time);
+	if (error) {
+		dev_err(pcu->dev,
+			"Failure when sending 0x%02x command to bootloader, error: %d\n",
+			pcu->cmd_buf[0], error);
+		return error;
+	}
+
+	if (expected_response && pcu->cmd_buf[2] != expected_response) {
+		dev_err(pcu->dev,
+			"Unexpected response from bootloader: 0x%02x, wanted 0x%02x\n",
+			pcu->cmd_buf[2], expected_response);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+#define ims_pcu_execute_bl_command(pcu, code, data, len, timeout)	\
+	__ims_pcu_execute_bl_command(pcu,				\
+				     IMS_PCU_BL_CMD_##code, data, len,	\
+				     IMS_PCU_BL_RSP_##code, timeout)	\
+
+#define IMS_PCU_INFO_PART_OFFSET	2
+#define IMS_PCU_INFO_DOM_OFFSET		17
+#define IMS_PCU_INFO_SERIAL_OFFSET	25
+
+#define IMS_PCU_SET_INFO_SIZE		31
+
+static int ims_pcu_get_info(struct ims_pcu *pcu)
+{
+	int error;
+
+	error = ims_pcu_execute_query(pcu, GET_INFO);
+	if (error) {
+		dev_err(pcu->dev,
+			"GET_INFO command failed, error: %d\n", error);
+		return error;
+	}
+
+	memcpy(pcu->part_number,
+	       &pcu->cmd_buf[IMS_PCU_INFO_PART_OFFSET],
+	       sizeof(pcu->part_number));
+	memcpy(pcu->date_of_manufacturing,
+	       &pcu->cmd_buf[IMS_PCU_INFO_DOM_OFFSET],
+	       sizeof(pcu->date_of_manufacturing));
+	memcpy(pcu->serial_number,
+	       &pcu->cmd_buf[IMS_PCU_INFO_SERIAL_OFFSET],
+	       sizeof(pcu->serial_number));
+
+	return 0;
+}
+
+static int ims_pcu_set_info(struct ims_pcu *pcu)
+{
+	int error;
+
+	memcpy(&pcu->cmd_buf[IMS_PCU_INFO_PART_OFFSET],
+	       pcu->part_number, sizeof(pcu->part_number));
+	memcpy(&pcu->cmd_buf[IMS_PCU_INFO_DOM_OFFSET],
+	       pcu->date_of_manufacturing, sizeof(pcu->date_of_manufacturing));
+	memcpy(&pcu->cmd_buf[IMS_PCU_INFO_SERIAL_OFFSET],
+	       pcu->serial_number, sizeof(pcu->serial_number));
+
+	error = ims_pcu_execute_command(pcu, SET_INFO,
+					&pcu->cmd_buf[IMS_PCU_DATA_OFFSET],
+					IMS_PCU_SET_INFO_SIZE);
+	if (error) {
+		dev_err(pcu->dev,
+			"Failed to update device information, error: %d\n",
+			error);
+		return error;
+	}
+
+	return 0;
+}
+
+static int ims_pcu_switch_to_bootloader(struct ims_pcu *pcu)
+{
+	int error;
+
+	/* Execute jump to the bootoloader */
+	error = ims_pcu_execute_command(pcu, JUMP_TO_BTLDR, NULL, 0);
+	if (error) {
+		dev_err(pcu->dev,
+			"Failure when sending JUMP TO BOOTLOADER command, error: %d\n",
+			error);
+		return error;
+	}
+
+	return 0;
+}
+
+/*********************************************************************
+ *             Firmware Update handling                              *
+ *********************************************************************/
+
+#define IMS_PCU_FIRMWARE_NAME	"imspcu.fw"
+
+struct ims_pcu_flash_fmt {
+	__le32 addr;
+	u8 len;
+	u8 data[];
+};
+
+static unsigned int ims_pcu_count_fw_records(const struct firmware *fw)
+{
+	const struct ihex_binrec *rec = (const struct ihex_binrec *)fw->data;
+	unsigned int count = 0;
+
+	while (rec) {
+		count++;
+		rec = ihex_next_binrec(rec);
+	}
+
+	return count;
+}
+
+static int ims_pcu_verify_block(struct ims_pcu *pcu,
+				u32 addr, u8 len, const u8 *data)
+{
+	struct ims_pcu_flash_fmt *fragment;
+	int error;
+
+	fragment = (void *)&pcu->cmd_buf[1];
+	put_unaligned_le32(addr, &fragment->addr);
+	fragment->len = len;
+
+	error = ims_pcu_execute_bl_command(pcu, READ_APP, NULL, 5,
+					IMS_PCU_CMD_RESPONSE_TIMEOUT);
+	if (error) {
+		dev_err(pcu->dev,
+			"Failed to retrieve block at 0x%08x, len %d, error: %d\n",
+			addr, len, error);
+		return error;
+	}
+
+	fragment = (void *)&pcu->cmd_buf[IMS_PCU_BL_DATA_OFFSET];
+	if (get_unaligned_le32(&fragment->addr) != addr ||
+	    fragment->len != len) {
+		dev_err(pcu->dev,
+			"Wrong block when retrieving 0x%08x (0x%08x), len %d (%d)\n",
+			addr, get_unaligned_le32(&fragment->addr),
+			len, fragment->len);
+		return -EINVAL;
+	}
+
+	if (memcmp(fragment->data, data, len)) {
+		dev_err(pcu->dev,
+			"Mismatch in block at 0x%08x, len %d\n",
+			addr, len);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int ims_pcu_flash_firmware(struct ims_pcu *pcu,
+				  const struct firmware *fw,
+				  unsigned int n_fw_records)
+{
+	const struct ihex_binrec *rec = (const struct ihex_binrec *)fw->data;
+	struct ims_pcu_flash_fmt *fragment;
+	unsigned int count = 0;
+	u32 addr;
+	u8 len;
+	int error;
+
+	error = ims_pcu_execute_bl_command(pcu, ERASE_APP, NULL, 0, 2000);
+	if (error) {
+		dev_err(pcu->dev,
+			"Failed to erase application image, error: %d\n",
+			error);
+		return error;
+	}
+
+	while (rec) {
+		/*
+		 * The firmware format is messed up for some reason.
+		 * The address twice that of what is needed for some
+		 * reason and we end up overwriting half of the data
+		 * with the next record.
+		 */
+		addr = be32_to_cpu(rec->addr) / 2;
+		len = be16_to_cpu(rec->len);
+
+		fragment = (void *)&pcu->cmd_buf[1];
+		put_unaligned_le32(addr, &fragment->addr);
+		fragment->len = len;
+		memcpy(fragment->data, rec->data, len);
+
+		error = ims_pcu_execute_bl_command(pcu, PROGRAM_DEVICE,
+						NULL, len + 5,
+						IMS_PCU_CMD_RESPONSE_TIMEOUT);
+		if (error) {
+			dev_err(pcu->dev,
+				"Failed to write block at 0x%08x, len %d, error: %d\n",
+				addr, len, error);
+			return error;
+		}
+
+		if (addr >= pcu->fw_start_addr && addr < pcu->fw_end_addr) {
+			error = ims_pcu_verify_block(pcu, addr, len, rec->data);
+			if (error)
+				return error;
+		}
+
+		count++;
+		pcu->update_firmware_status = (count * 100) / n_fw_records;
+
+		rec = ihex_next_binrec(rec);
+	}
+
+	error = ims_pcu_execute_bl_command(pcu, PROGRAM_COMPLETE,
+					    NULL, 0, 2000);
+	if (error)
+		dev_err(pcu->dev,
+			"Failed to send PROGRAM_COMPLETE, error: %d\n",
+			error);
+
+	return 0;
+}
+
+static int ims_pcu_handle_firmware_update(struct ims_pcu *pcu,
+					  const struct firmware *fw)
+{
+	unsigned int n_fw_records;
+	int retval;
+
+	dev_info(pcu->dev, "Updating firmware %s, size: %zu\n",
+		 IMS_PCU_FIRMWARE_NAME, fw->size);
+
+	n_fw_records = ims_pcu_count_fw_records(fw);
+
+	retval = ims_pcu_flash_firmware(pcu, fw, n_fw_records);
+	if (retval)
+		goto out;
+
+	retval = ims_pcu_execute_bl_command(pcu, LAUNCH_APP, NULL, 0, 0);
+	if (retval)
+		dev_err(pcu->dev,
+			"Failed to start application image, error: %d\n",
+			retval);
+
+out:
+	pcu->update_firmware_status = retval;
+	sysfs_notify(&pcu->dev->kobj, NULL, "update_firmware_status");
+	return retval;
+}
+
+static void ims_pcu_process_async_firmware(const struct firmware *fw,
+					   void *context)
+{
+	struct ims_pcu *pcu = context;
+	int error;
+
+	if (!fw) {
+		dev_err(pcu->dev, "Failed to get firmware %s\n",
+			IMS_PCU_FIRMWARE_NAME);
+		goto out;
+	}
+
+	error = ihex_validate_fw(fw);
+	if (error) {
+		dev_err(pcu->dev, "Firmware %s is invalid\n",
+			IMS_PCU_FIRMWARE_NAME);
+		goto out;
+	}
+
+	mutex_lock(&pcu->cmd_mutex);
+	ims_pcu_handle_firmware_update(pcu, fw);
+	mutex_unlock(&pcu->cmd_mutex);
+
+	release_firmware(fw);
+
+out:
+	complete(&pcu->async_firmware_done);
+}
+
+/*********************************************************************
+ *             Backlight LED device support                          *
+ *********************************************************************/
+
+#define IMS_PCU_MAX_BRIGHTNESS		31998
+
+static int ims_pcu_backlight_set_brightness(struct led_classdev *cdev,
+					    enum led_brightness value)
+{
+	struct ims_pcu_backlight *backlight =
+			container_of(cdev, struct ims_pcu_backlight, cdev);
+	struct ims_pcu *pcu =
+			container_of(backlight, struct ims_pcu, backlight);
+	__le16 br_val = cpu_to_le16(value);
+	int error;
+
+	mutex_lock(&pcu->cmd_mutex);
+
+	error = ims_pcu_execute_command(pcu, SET_BRIGHTNESS,
+					&br_val, sizeof(br_val));
+	if (error && error != -ENODEV)
+		dev_warn(pcu->dev,
+			 "Failed to set desired brightness %u, error: %d\n",
+			 value, error);
+
+	mutex_unlock(&pcu->cmd_mutex);
+
+	return error;
+}
+
+static enum led_brightness
+ims_pcu_backlight_get_brightness(struct led_classdev *cdev)
+{
+	struct ims_pcu_backlight *backlight =
+			container_of(cdev, struct ims_pcu_backlight, cdev);
+	struct ims_pcu *pcu =
+			container_of(backlight, struct ims_pcu, backlight);
+	int brightness;
+	int error;
+
+	mutex_lock(&pcu->cmd_mutex);
+
+	error = ims_pcu_execute_query(pcu, GET_BRIGHTNESS);
+	if (error) {
+		dev_warn(pcu->dev,
+			 "Failed to get current brightness, error: %d\n",
+			 error);
+		/* Assume the LED is OFF */
+		brightness = LED_OFF;
+	} else {
+		brightness =
+			get_unaligned_le16(&pcu->cmd_buf[IMS_PCU_DATA_OFFSET]);
+	}
+
+	mutex_unlock(&pcu->cmd_mutex);
+
+	return brightness;
+}
+
+static int ims_pcu_setup_backlight(struct ims_pcu *pcu)
+{
+	struct ims_pcu_backlight *backlight = &pcu->backlight;
+	int error;
+
+	snprintf(backlight->name, sizeof(backlight->name),
+		 "pcu%d::kbd_backlight", pcu->device_no);
+
+	backlight->cdev.name = backlight->name;
+	backlight->cdev.max_brightness = IMS_PCU_MAX_BRIGHTNESS;
+	backlight->cdev.brightness_get = ims_pcu_backlight_get_brightness;
+	backlight->cdev.brightness_set_blocking =
+					 ims_pcu_backlight_set_brightness;
+
+	error = led_classdev_register(pcu->dev, &backlight->cdev);
+	if (error) {
+		dev_err(pcu->dev,
+			"Failed to register backlight LED device, error: %d\n",
+			error);
+		return error;
+	}
+
+	return 0;
+}
+
+static void ims_pcu_destroy_backlight(struct ims_pcu *pcu)
+{
+	struct ims_pcu_backlight *backlight = &pcu->backlight;
+
+	led_classdev_unregister(&backlight->cdev);
+}
+
+
+/*********************************************************************
+ *             Sysfs attributes handling                             *
+ *********************************************************************/
+
+struct ims_pcu_attribute {
+	struct device_attribute dattr;
+	size_t field_offset;
+	int field_length;
+};
+
+static ssize_t ims_pcu_attribute_show(struct device *dev,
+				      struct device_attribute *dattr,
+				      char *buf)
+{
+	struct usb_interface *intf = to_usb_interface(dev);
+	struct ims_pcu *pcu = usb_get_intfdata(intf);
+	struct ims_pcu_attribute *attr =
+			container_of(dattr, struct ims_pcu_attribute, dattr);
+	char *field = (char *)pcu + attr->field_offset;
+
+	return scnprintf(buf, PAGE_SIZE, "%.*s\n", attr->field_length, field);
+}
+
+static ssize_t ims_pcu_attribute_store(struct device *dev,
+				       struct device_attribute *dattr,
+				       const char *buf, size_t count)
+{
+
+	struct usb_interface *intf = to_usb_interface(dev);
+	struct ims_pcu *pcu = usb_get_intfdata(intf);
+	struct ims_pcu_attribute *attr =
+			container_of(dattr, struct ims_pcu_attribute, dattr);
+	char *field = (char *)pcu + attr->field_offset;
+	size_t data_len;
+	int error;
+
+	if (count > attr->field_length)
+		return -EINVAL;
+
+	data_len = strnlen(buf, attr->field_length);
+	if (data_len > attr->field_length)
+		return -EINVAL;
+
+	error = mutex_lock_interruptible(&pcu->cmd_mutex);
+	if (error)
+		return error;
+
+	memset(field, 0, attr->field_length);
+	memcpy(field, buf, data_len);
+
+	error = ims_pcu_set_info(pcu);
+
+	/*
+	 * Even if update failed, let's fetch the info again as we just
+	 * clobbered one of the fields.
+	 */
+	ims_pcu_get_info(pcu);
+
+	mutex_unlock(&pcu->cmd_mutex);
+
+	return error < 0 ? error : count;
+}
+
+#define IMS_PCU_ATTR(_field, _mode)					\
+struct ims_pcu_attribute ims_pcu_attr_##_field = {			\
+	.dattr = __ATTR(_field, _mode,					\
+			ims_pcu_attribute_show,				\
+			ims_pcu_attribute_store),			\
+	.field_offset = offsetof(struct ims_pcu, _field),		\
+	.field_length = sizeof(((struct ims_pcu *)NULL)->_field),	\
+}
+
+#define IMS_PCU_RO_ATTR(_field)						\
+		IMS_PCU_ATTR(_field, S_IRUGO)
+#define IMS_PCU_RW_ATTR(_field)						\
+		IMS_PCU_ATTR(_field, S_IRUGO | S_IWUSR)
+
+static IMS_PCU_RW_ATTR(part_number);
+static IMS_PCU_RW_ATTR(serial_number);
+static IMS_PCU_RW_ATTR(date_of_manufacturing);
+
+static IMS_PCU_RO_ATTR(fw_version);
+static IMS_PCU_RO_ATTR(bl_version);
+static IMS_PCU_RO_ATTR(reset_reason);
+
+static ssize_t ims_pcu_reset_device(struct device *dev,
+				    struct device_attribute *dattr,
+				    const char *buf, size_t count)
+{
+	static const u8 reset_byte = 1;
+	struct usb_interface *intf = to_usb_interface(dev);
+	struct ims_pcu *pcu = usb_get_intfdata(intf);
+	int value;
+	int error;
+
+	error = kstrtoint(buf, 0, &value);
+	if (error)
+		return error;
+
+	if (value != 1)
+		return -EINVAL;
+
+	dev_info(pcu->dev, "Attempting to reset device\n");
+
+	error = ims_pcu_execute_command(pcu, PCU_RESET, &reset_byte, 1);
+	if (error) {
+		dev_info(pcu->dev,
+			 "Failed to reset device, error: %d\n",
+			 error);
+		return error;
+	}
+
+	return count;
+}
+
+static DEVICE_ATTR(reset_device, S_IWUSR, NULL, ims_pcu_reset_device);
+
+static ssize_t ims_pcu_update_firmware_store(struct device *dev,
+					     struct device_attribute *dattr,
+					     const char *buf, size_t count)
+{
+	struct usb_interface *intf = to_usb_interface(dev);
+	struct ims_pcu *pcu = usb_get_intfdata(intf);
+	const struct firmware *fw = NULL;
+	int value;
+	int error;
+
+	error = kstrtoint(buf, 0, &value);
+	if (error)
+		return error;
+
+	if (value != 1)
+		return -EINVAL;
+
+	error = mutex_lock_interruptible(&pcu->cmd_mutex);
+	if (error)
+		return error;
+
+	error = request_ihex_firmware(&fw, IMS_PCU_FIRMWARE_NAME, pcu->dev);
+	if (error) {
+		dev_err(pcu->dev, "Failed to request firmware %s, error: %d\n",
+			IMS_PCU_FIRMWARE_NAME, error);
+		goto out;
+	}
+
+	/*
+	 * If we are already in bootloader mode we can proceed with
+	 * flashing the firmware.
+	 *
+	 * If we are in application mode, then we need to switch into
+	 * bootloader mode, which will cause the device to disconnect
+	 * and reconnect as different device.
+	 */
+	if (pcu->bootloader_mode)
+		error = ims_pcu_handle_firmware_update(pcu, fw);
+	else
+		error = ims_pcu_switch_to_bootloader(pcu);
+
+	release_firmware(fw);
+
+out:
+	mutex_unlock(&pcu->cmd_mutex);
+	return error ?: count;
+}
+
+static DEVICE_ATTR(update_firmware, S_IWUSR,
+		   NULL, ims_pcu_update_firmware_store);
+
+static ssize_t
+ims_pcu_update_firmware_status_show(struct device *dev,
+				    struct device_attribute *dattr,
+				    char *buf)
+{
+	struct usb_interface *intf = to_usb_interface(dev);
+	struct ims_pcu *pcu = usb_get_intfdata(intf);
+
+	return scnprintf(buf, PAGE_SIZE, "%d\n", pcu->update_firmware_status);
+}
+
+static DEVICE_ATTR(update_firmware_status, S_IRUGO,
+		   ims_pcu_update_firmware_status_show, NULL);
+
+static struct attribute *ims_pcu_attrs[] = {
+	&ims_pcu_attr_part_number.dattr.attr,
+	&ims_pcu_attr_serial_number.dattr.attr,
+	&ims_pcu_attr_date_of_manufacturing.dattr.attr,
+	&ims_pcu_attr_fw_version.dattr.attr,
+	&ims_pcu_attr_bl_version.dattr.attr,
+	&ims_pcu_attr_reset_reason.dattr.attr,
+	&dev_attr_reset_device.attr,
+	&dev_attr_update_firmware.attr,
+	&dev_attr_update_firmware_status.attr,
+	NULL
+};
+
+static umode_t ims_pcu_is_attr_visible(struct kobject *kobj,
+				       struct attribute *attr, int n)
+{
+	struct device *dev = kobj_to_dev(kobj);
+	struct usb_interface *intf = to_usb_interface(dev);
+	struct ims_pcu *pcu = usb_get_intfdata(intf);
+	umode_t mode = attr->mode;
+
+	if (pcu->bootloader_mode) {
+		if (attr != &dev_attr_update_firmware_status.attr &&
+		    attr != &dev_attr_update_firmware.attr &&
+		    attr != &dev_attr_reset_device.attr) {
+			mode = 0;
+		}
+	} else {
+		if (attr == &dev_attr_update_firmware_status.attr)
+			mode = 0;
+	}
+
+	return mode;
+}
+
+static const struct attribute_group ims_pcu_attr_group = {
+	.is_visible	= ims_pcu_is_attr_visible,
+	.attrs		= ims_pcu_attrs,
+};
+
+/* Support for a separate OFN attribute group */
+
+#define OFN_REG_RESULT_OFFSET	2
+
+static int ims_pcu_read_ofn_config(struct ims_pcu *pcu, u8 addr, u8 *data)
+{
+	int error;
+	s16 result;
+
+	error = ims_pcu_execute_command(pcu, OFN_GET_CONFIG,
+					&addr, sizeof(addr));
+	if (error)
+		return error;
+
+	result = (s16)get_unaligned_le16(pcu->cmd_buf + OFN_REG_RESULT_OFFSET);
+	if (result < 0)
+		return -EIO;
+
+	/* We only need LSB */
+	*data = pcu->cmd_buf[OFN_REG_RESULT_OFFSET];
+	return 0;
+}
+
+static int ims_pcu_write_ofn_config(struct ims_pcu *pcu, u8 addr, u8 data)
+{
+	u8 buffer[] = { addr, data };
+	int error;
+	s16 result;
+
+	error = ims_pcu_execute_command(pcu, OFN_SET_CONFIG,
+					&buffer, sizeof(buffer));
+	if (error)
+		return error;
+
+	result = (s16)get_unaligned_le16(pcu->cmd_buf + OFN_REG_RESULT_OFFSET);
+	if (result < 0)
+		return -EIO;
+
+	return 0;
+}
+
+static ssize_t ims_pcu_ofn_reg_data_show(struct device *dev,
+					 struct device_attribute *dattr,
+					 char *buf)
+{
+	struct usb_interface *intf = to_usb_interface(dev);
+	struct ims_pcu *pcu = usb_get_intfdata(intf);
+	int error;
+	u8 data;
+
+	mutex_lock(&pcu->cmd_mutex);
+	error = ims_pcu_read_ofn_config(pcu, pcu->ofn_reg_addr, &data);
+	mutex_unlock(&pcu->cmd_mutex);
+
+	if (error)
+		return error;
+
+	return scnprintf(buf, PAGE_SIZE, "%x\n", data);
+}
+
+static ssize_t ims_pcu_ofn_reg_data_store(struct device *dev,
+					  struct device_attribute *dattr,
+					  const char *buf, size_t count)
+{
+	struct usb_interface *intf = to_usb_interface(dev);
+	struct ims_pcu *pcu = usb_get_intfdata(intf);
+	int error;
+	u8 value;
+
+	error = kstrtou8(buf, 0, &value);
+	if (error)
+		return error;
+
+	mutex_lock(&pcu->cmd_mutex);
+	error = ims_pcu_write_ofn_config(pcu, pcu->ofn_reg_addr, value);
+	mutex_unlock(&pcu->cmd_mutex);
+
+	return error ?: count;
+}
+
+static DEVICE_ATTR(reg_data, S_IRUGO | S_IWUSR,
+		   ims_pcu_ofn_reg_data_show, ims_pcu_ofn_reg_data_store);
+
+static ssize_t ims_pcu_ofn_reg_addr_show(struct device *dev,
+					 struct device_attribute *dattr,
+					 char *buf)
+{
+	struct usb_interface *intf = to_usb_interface(dev);
+	struct ims_pcu *pcu = usb_get_intfdata(intf);
+	int error;
+
+	mutex_lock(&pcu->cmd_mutex);
+	error = scnprintf(buf, PAGE_SIZE, "%x\n", pcu->ofn_reg_addr);
+	mutex_unlock(&pcu->cmd_mutex);
+
+	return error;
+}
+
+static ssize_t ims_pcu_ofn_reg_addr_store(struct device *dev,
+					  struct device_attribute *dattr,
+					  const char *buf, size_t count)
+{
+	struct usb_interface *intf = to_usb_interface(dev);
+	struct ims_pcu *pcu = usb_get_intfdata(intf);
+	int error;
+	u8 value;
+
+	error = kstrtou8(buf, 0, &value);
+	if (error)
+		return error;
+
+	mutex_lock(&pcu->cmd_mutex);
+	pcu->ofn_reg_addr = value;
+	mutex_unlock(&pcu->cmd_mutex);
+
+	return count;
+}
+
+static DEVICE_ATTR(reg_addr, S_IRUGO | S_IWUSR,
+		   ims_pcu_ofn_reg_addr_show, ims_pcu_ofn_reg_addr_store);
+
+struct ims_pcu_ofn_bit_attribute {
+	struct device_attribute dattr;
+	u8 addr;
+	u8 nr;
+};
+
+static ssize_t ims_pcu_ofn_bit_show(struct device *dev,
+				    struct device_attribute *dattr,
+				    char *buf)
+{
+	struct usb_interface *intf = to_usb_interface(dev);
+	struct ims_pcu *pcu = usb_get_intfdata(intf);
+	struct ims_pcu_ofn_bit_attribute *attr =
+		container_of(dattr, struct ims_pcu_ofn_bit_attribute, dattr);
+	int error;
+	u8 data;
+
+	mutex_lock(&pcu->cmd_mutex);
+	error = ims_pcu_read_ofn_config(pcu, attr->addr, &data);
+	mutex_unlock(&pcu->cmd_mutex);
+
+	if (error)
+		return error;
+
+	return scnprintf(buf, PAGE_SIZE, "%d\n", !!(data & (1 << attr->nr)));
+}
+
+static ssize_t ims_pcu_ofn_bit_store(struct device *dev,
+				     struct device_attribute *dattr,
+				     const char *buf, size_t count)
+{
+	struct usb_interface *intf = to_usb_interface(dev);
+	struct ims_pcu *pcu = usb_get_intfdata(intf);
+	struct ims_pcu_ofn_bit_attribute *attr =
+		container_of(dattr, struct ims_pcu_ofn_bit_attribute, dattr);
+	int error;
+	int value;
+	u8 data;
+
+	error = kstrtoint(buf, 0, &value);
+	if (error)
+		return error;
+
+	if (value > 1)
+		return -EINVAL;
+
+	mutex_lock(&pcu->cmd_mutex);
+
+	error = ims_pcu_read_ofn_config(pcu, attr->addr, &data);
+	if (!error) {
+		if (value)
+			data |= 1U << attr->nr;
+		else
+			data &= ~(1U << attr->nr);
+
+		error = ims_pcu_write_ofn_config(pcu, attr->addr, data);
+	}
+
+	mutex_unlock(&pcu->cmd_mutex);
+
+	return error ?: count;
+}
+
+#define IMS_PCU_OFN_BIT_ATTR(_field, _addr, _nr)			\
+struct ims_pcu_ofn_bit_attribute ims_pcu_ofn_attr_##_field = {		\
+	.dattr = __ATTR(_field, S_IWUSR | S_IRUGO,			\
+			ims_pcu_ofn_bit_show, ims_pcu_ofn_bit_store),	\
+	.addr = _addr,							\
+	.nr = _nr,							\
+}
+
+static IMS_PCU_OFN_BIT_ATTR(engine_enable,   0x60, 7);
+static IMS_PCU_OFN_BIT_ATTR(speed_enable,    0x60, 6);
+static IMS_PCU_OFN_BIT_ATTR(assert_enable,   0x60, 5);
+static IMS_PCU_OFN_BIT_ATTR(xyquant_enable,  0x60, 4);
+static IMS_PCU_OFN_BIT_ATTR(xyscale_enable,  0x60, 1);
+
+static IMS_PCU_OFN_BIT_ATTR(scale_x2,        0x63, 6);
+static IMS_PCU_OFN_BIT_ATTR(scale_y2,        0x63, 7);
+
+static struct attribute *ims_pcu_ofn_attrs[] = {
+	&dev_attr_reg_data.attr,
+	&dev_attr_reg_addr.attr,
+	&ims_pcu_ofn_attr_engine_enable.dattr.attr,
+	&ims_pcu_ofn_attr_speed_enable.dattr.attr,
+	&ims_pcu_ofn_attr_assert_enable.dattr.attr,
+	&ims_pcu_ofn_attr_xyquant_enable.dattr.attr,
+	&ims_pcu_ofn_attr_xyscale_enable.dattr.attr,
+	&ims_pcu_ofn_attr_scale_x2.dattr.attr,
+	&ims_pcu_ofn_attr_scale_y2.dattr.attr,
+	NULL
+};
+
+static const struct attribute_group ims_pcu_ofn_attr_group = {
+	.name	= "ofn",
+	.attrs	= ims_pcu_ofn_attrs,
+};
+
+static void ims_pcu_irq(struct urb *urb)
+{
+	struct ims_pcu *pcu = urb->context;
+	int retval, status;
+
+	status = urb->status;
+
+	switch (status) {
+	case 0:
+		/* success */
+		break;
+	case -ECONNRESET:
+	case -ENOENT:
+	case -ESHUTDOWN:
+		/* this urb is terminated, clean up */
+		dev_dbg(pcu->dev, "%s - urb shutting down with status: %d\n",
+			__func__, status);
+		return;
+	default:
+		dev_dbg(pcu->dev, "%s - nonzero urb status received: %d\n",
+			__func__, status);
+		goto exit;
+	}
+
+	dev_dbg(pcu->dev, "%s: received %d: %*ph\n", __func__,
+		urb->actual_length, urb->actual_length, pcu->urb_in_buf);
+
+	if (urb == pcu->urb_in)
+		ims_pcu_process_data(pcu, urb);
+
+exit:
+	retval = usb_submit_urb(urb, GFP_ATOMIC);
+	if (retval && retval != -ENODEV)
+		dev_err(pcu->dev, "%s - usb_submit_urb failed with result %d\n",
+			__func__, retval);
+}
+
+static int ims_pcu_buffers_alloc(struct ims_pcu *pcu)
+{
+	int error;
+
+	pcu->urb_in_buf = usb_alloc_coherent(pcu->udev, pcu->max_in_size,
+					     GFP_KERNEL, &pcu->read_dma);
+	if (!pcu->urb_in_buf) {
+		dev_err(pcu->dev,
+			"Failed to allocate memory for read buffer\n");
+		return -ENOMEM;
+	}
+
+	pcu->urb_in = usb_alloc_urb(0, GFP_KERNEL);
+	if (!pcu->urb_in) {
+		dev_err(pcu->dev, "Failed to allocate input URB\n");
+		error = -ENOMEM;
+		goto err_free_urb_in_buf;
+	}
+
+	pcu->urb_in->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+	pcu->urb_in->transfer_dma = pcu->read_dma;
+
+	usb_fill_bulk_urb(pcu->urb_in, pcu->udev,
+			  usb_rcvbulkpipe(pcu->udev,
+					  pcu->ep_in->bEndpointAddress),
+			  pcu->urb_in_buf, pcu->max_in_size,
+			  ims_pcu_irq, pcu);
+
+	/*
+	 * We are using usb_bulk_msg() for sending so there is no point
+	 * in allocating memory with usb_alloc_coherent().
+	 */
+	pcu->urb_out_buf = kmalloc(pcu->max_out_size, GFP_KERNEL);
+	if (!pcu->urb_out_buf) {
+		dev_err(pcu->dev, "Failed to allocate memory for write buffer\n");
+		error = -ENOMEM;
+		goto err_free_in_urb;
+	}
+
+	pcu->urb_ctrl_buf = usb_alloc_coherent(pcu->udev, pcu->max_ctrl_size,
+					       GFP_KERNEL, &pcu->ctrl_dma);
+	if (!pcu->urb_ctrl_buf) {
+		dev_err(pcu->dev,
+			"Failed to allocate memory for read buffer\n");
+		error = -ENOMEM;
+		goto err_free_urb_out_buf;
+	}
+
+	pcu->urb_ctrl = usb_alloc_urb(0, GFP_KERNEL);
+	if (!pcu->urb_ctrl) {
+		dev_err(pcu->dev, "Failed to allocate input URB\n");
+		error = -ENOMEM;
+		goto err_free_urb_ctrl_buf;
+	}
+
+	pcu->urb_ctrl->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+	pcu->urb_ctrl->transfer_dma = pcu->ctrl_dma;
+
+	usb_fill_int_urb(pcu->urb_ctrl, pcu->udev,
+			  usb_rcvintpipe(pcu->udev,
+					 pcu->ep_ctrl->bEndpointAddress),
+			  pcu->urb_ctrl_buf, pcu->max_ctrl_size,
+			  ims_pcu_irq, pcu, pcu->ep_ctrl->bInterval);
+
+	return 0;
+
+err_free_urb_ctrl_buf:
+	usb_free_coherent(pcu->udev, pcu->max_ctrl_size,
+			  pcu->urb_ctrl_buf, pcu->ctrl_dma);
+err_free_urb_out_buf:
+	kfree(pcu->urb_out_buf);
+err_free_in_urb:
+	usb_free_urb(pcu->urb_in);
+err_free_urb_in_buf:
+	usb_free_coherent(pcu->udev, pcu->max_in_size,
+			  pcu->urb_in_buf, pcu->read_dma);
+	return error;
+}
+
+static void ims_pcu_buffers_free(struct ims_pcu *pcu)
+{
+	usb_kill_urb(pcu->urb_in);
+	usb_free_urb(pcu->urb_in);
+
+	usb_free_coherent(pcu->udev, pcu->max_out_size,
+			  pcu->urb_in_buf, pcu->read_dma);
+
+	kfree(pcu->urb_out_buf);
+
+	usb_kill_urb(pcu->urb_ctrl);
+	usb_free_urb(pcu->urb_ctrl);
+
+	usb_free_coherent(pcu->udev, pcu->max_ctrl_size,
+			  pcu->urb_ctrl_buf, pcu->ctrl_dma);
+}
+
+static const struct usb_cdc_union_desc *
+ims_pcu_get_cdc_union_desc(struct usb_interface *intf)
+{
+	const void *buf = intf->altsetting->extra;
+	size_t buflen = intf->altsetting->extralen;
+	struct usb_cdc_union_desc *union_desc;
+
+	if (!buf) {
+		dev_err(&intf->dev, "Missing descriptor data\n");
+		return NULL;
+	}
+
+	if (!buflen) {
+		dev_err(&intf->dev, "Zero length descriptor\n");
+		return NULL;
+	}
+
+	while (buflen >= sizeof(*union_desc)) {
+		union_desc = (struct usb_cdc_union_desc *)buf;
+
+		if (union_desc->bLength > buflen) {
+			dev_err(&intf->dev, "Too large descriptor\n");
+			return NULL;
+		}
+
+		if (union_desc->bDescriptorType == USB_DT_CS_INTERFACE &&
+		    union_desc->bDescriptorSubType == USB_CDC_UNION_TYPE) {
+			dev_dbg(&intf->dev, "Found union header\n");
+
+			if (union_desc->bLength >= sizeof(*union_desc))
+				return union_desc;
+
+			dev_err(&intf->dev,
+				"Union descriptor too short (%d vs %zd)\n",
+				union_desc->bLength, sizeof(*union_desc));
+			return NULL;
+		}
+
+		buflen -= union_desc->bLength;
+		buf += union_desc->bLength;
+	}
+
+	dev_err(&intf->dev, "Missing CDC union descriptor\n");
+	return NULL;
+}
+
+static int ims_pcu_parse_cdc_data(struct usb_interface *intf, struct ims_pcu *pcu)
+{
+	const struct usb_cdc_union_desc *union_desc;
+	struct usb_host_interface *alt;
+
+	union_desc = ims_pcu_get_cdc_union_desc(intf);
+	if (!union_desc)
+		return -EINVAL;
+
+	pcu->ctrl_intf = usb_ifnum_to_if(pcu->udev,
+					 union_desc->bMasterInterface0);
+	if (!pcu->ctrl_intf)
+		return -EINVAL;
+
+	alt = pcu->ctrl_intf->cur_altsetting;
+
+	if (alt->desc.bNumEndpoints < 1)
+		return -ENODEV;
+
+	pcu->ep_ctrl = &alt->endpoint[0].desc;
+	pcu->max_ctrl_size = usb_endpoint_maxp(pcu->ep_ctrl);
+
+	pcu->data_intf = usb_ifnum_to_if(pcu->udev,
+					 union_desc->bSlaveInterface0);
+	if (!pcu->data_intf)
+		return -EINVAL;
+
+	alt = pcu->data_intf->cur_altsetting;
+	if (alt->desc.bNumEndpoints != 2) {
+		dev_err(pcu->dev,
+			"Incorrect number of endpoints on data interface (%d)\n",
+			alt->desc.bNumEndpoints);
+		return -EINVAL;
+	}
+
+	pcu->ep_out = &alt->endpoint[0].desc;
+	if (!usb_endpoint_is_bulk_out(pcu->ep_out)) {
+		dev_err(pcu->dev,
+			"First endpoint on data interface is not BULK OUT\n");
+		return -EINVAL;
+	}
+
+	pcu->max_out_size = usb_endpoint_maxp(pcu->ep_out);
+	if (pcu->max_out_size < 8) {
+		dev_err(pcu->dev,
+			"Max OUT packet size is too small (%zd)\n",
+			pcu->max_out_size);
+		return -EINVAL;
+	}
+
+	pcu->ep_in = &alt->endpoint[1].desc;
+	if (!usb_endpoint_is_bulk_in(pcu->ep_in)) {
+		dev_err(pcu->dev,
+			"Second endpoint on data interface is not BULK IN\n");
+		return -EINVAL;
+	}
+
+	pcu->max_in_size = usb_endpoint_maxp(pcu->ep_in);
+	if (pcu->max_in_size < 8) {
+		dev_err(pcu->dev,
+			"Max IN packet size is too small (%zd)\n",
+			pcu->max_in_size);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int ims_pcu_start_io(struct ims_pcu *pcu)
+{
+	int error;
+
+	error = usb_submit_urb(pcu->urb_ctrl, GFP_KERNEL);
+	if (error) {
+		dev_err(pcu->dev,
+			"Failed to start control IO - usb_submit_urb failed with result: %d\n",
+			error);
+		return -EIO;
+	}
+
+	error = usb_submit_urb(pcu->urb_in, GFP_KERNEL);
+	if (error) {
+		dev_err(pcu->dev,
+			"Failed to start IO - usb_submit_urb failed with result: %d\n",
+			error);
+		usb_kill_urb(pcu->urb_ctrl);
+		return -EIO;
+	}
+
+	return 0;
+}
+
+static void ims_pcu_stop_io(struct ims_pcu *pcu)
+{
+	usb_kill_urb(pcu->urb_in);
+	usb_kill_urb(pcu->urb_ctrl);
+}
+
+static int ims_pcu_line_setup(struct ims_pcu *pcu)
+{
+	struct usb_host_interface *interface = pcu->ctrl_intf->cur_altsetting;
+	struct usb_cdc_line_coding *line = (void *)pcu->cmd_buf;
+	int error;
+
+	memset(line, 0, sizeof(*line));
+	line->dwDTERate = cpu_to_le32(57600);
+	line->bDataBits = 8;
+
+	error = usb_control_msg(pcu->udev, usb_sndctrlpipe(pcu->udev, 0),
+				USB_CDC_REQ_SET_LINE_CODING,
+				USB_TYPE_CLASS | USB_RECIP_INTERFACE,
+				0, interface->desc.bInterfaceNumber,
+				line, sizeof(struct usb_cdc_line_coding),
+				5000);
+	if (error < 0) {
+		dev_err(pcu->dev, "Failed to set line coding, error: %d\n",
+			error);
+		return error;
+	}
+
+	error = usb_control_msg(pcu->udev, usb_sndctrlpipe(pcu->udev, 0),
+				USB_CDC_REQ_SET_CONTROL_LINE_STATE,
+				USB_TYPE_CLASS | USB_RECIP_INTERFACE,
+				0x03, interface->desc.bInterfaceNumber,
+				NULL, 0, 5000);
+	if (error < 0) {
+		dev_err(pcu->dev, "Failed to set line state, error: %d\n",
+			error);
+		return error;
+	}
+
+	return 0;
+}
+
+static int ims_pcu_get_device_info(struct ims_pcu *pcu)
+{
+	int error;
+
+	error = ims_pcu_get_info(pcu);
+	if (error)
+		return error;
+
+	error = ims_pcu_execute_query(pcu, GET_FW_VERSION);
+	if (error) {
+		dev_err(pcu->dev,
+			"GET_FW_VERSION command failed, error: %d\n", error);
+		return error;
+	}
+
+	snprintf(pcu->fw_version, sizeof(pcu->fw_version),
+		 "%02d%02d%02d%02d.%c%c",
+		 pcu->cmd_buf[2], pcu->cmd_buf[3], pcu->cmd_buf[4], pcu->cmd_buf[5],
+		 pcu->cmd_buf[6], pcu->cmd_buf[7]);
+
+	error = ims_pcu_execute_query(pcu, GET_BL_VERSION);
+	if (error) {
+		dev_err(pcu->dev,
+			"GET_BL_VERSION command failed, error: %d\n", error);
+		return error;
+	}
+
+	snprintf(pcu->bl_version, sizeof(pcu->bl_version),
+		 "%02d%02d%02d%02d.%c%c",
+		 pcu->cmd_buf[2], pcu->cmd_buf[3], pcu->cmd_buf[4], pcu->cmd_buf[5],
+		 pcu->cmd_buf[6], pcu->cmd_buf[7]);
+
+	error = ims_pcu_execute_query(pcu, RESET_REASON);
+	if (error) {
+		dev_err(pcu->dev,
+			"RESET_REASON command failed, error: %d\n", error);
+		return error;
+	}
+
+	snprintf(pcu->reset_reason, sizeof(pcu->reset_reason),
+		 "%02x", pcu->cmd_buf[IMS_PCU_DATA_OFFSET]);
+
+	dev_dbg(pcu->dev,
+		"P/N: %s, MD: %s, S/N: %s, FW: %s, BL: %s, RR: %s\n",
+		pcu->part_number,
+		pcu->date_of_manufacturing,
+		pcu->serial_number,
+		pcu->fw_version,
+		pcu->bl_version,
+		pcu->reset_reason);
+
+	return 0;
+}
+
+static int ims_pcu_identify_type(struct ims_pcu *pcu, u8 *device_id)
+{
+	int error;
+
+	error = ims_pcu_execute_query(pcu, GET_DEVICE_ID);
+	if (error) {
+		dev_err(pcu->dev,
+			"GET_DEVICE_ID command failed, error: %d\n", error);
+		return error;
+	}
+
+	*device_id = pcu->cmd_buf[IMS_PCU_DATA_OFFSET];
+	dev_dbg(pcu->dev, "Detected device ID: %d\n", *device_id);
+
+	return 0;
+}
+
+static int ims_pcu_init_application_mode(struct ims_pcu *pcu)
+{
+	static atomic_t device_no = ATOMIC_INIT(-1);
+
+	const struct ims_pcu_device_info *info;
+	int error;
+
+	error = ims_pcu_get_device_info(pcu);
+	if (error) {
+		/* Device does not respond to basic queries, hopeless */
+		return error;
+	}
+
+	error = ims_pcu_identify_type(pcu, &pcu->device_id);
+	if (error) {
+		dev_err(pcu->dev,
+			"Failed to identify device, error: %d\n", error);
+		/*
+		 * Do not signal error, but do not create input nor
+		 * backlight devices either, let userspace figure this
+		 * out (flash a new firmware?).
+		 */
+		return 0;
+	}
+
+	if (pcu->device_id >= ARRAY_SIZE(ims_pcu_device_info) ||
+	    !ims_pcu_device_info[pcu->device_id].keymap) {
+		dev_err(pcu->dev, "Device ID %d is not valid\n", pcu->device_id);
+		/* Same as above, punt to userspace */
+		return 0;
+	}
+
+	/* Device appears to be operable, complete initialization */
+	pcu->device_no = atomic_inc_return(&device_no);
+
+	/*
+	 * PCU-B devices, both GEN_1 and GEN_2 do not have OFN sensor
+	 */
+	if (pcu->device_id != IMS_PCU_PCU_B_DEVICE_ID) {
+		error = sysfs_create_group(&pcu->dev->kobj,
+					   &ims_pcu_ofn_attr_group);
+		if (error)
+			return error;
+	}
+
+	error = ims_pcu_setup_backlight(pcu);
+	if (error)
+		return error;
+
+	info = &ims_pcu_device_info[pcu->device_id];
+	error = ims_pcu_setup_buttons(pcu, info->keymap, info->keymap_len);
+	if (error)
+		goto err_destroy_backlight;
+
+	if (info->has_gamepad) {
+		error = ims_pcu_setup_gamepad(pcu);
+		if (error)
+			goto err_destroy_buttons;
+	}
+
+	pcu->setup_complete = true;
+
+	return 0;
+
+err_destroy_buttons:
+	ims_pcu_destroy_buttons(pcu);
+err_destroy_backlight:
+	ims_pcu_destroy_backlight(pcu);
+	return error;
+}
+
+static void ims_pcu_destroy_application_mode(struct ims_pcu *pcu)
+{
+	if (pcu->setup_complete) {
+		pcu->setup_complete = false;
+		mb(); /* make sure flag setting is not reordered */
+
+		if (pcu->gamepad)
+			ims_pcu_destroy_gamepad(pcu);
+		ims_pcu_destroy_buttons(pcu);
+		ims_pcu_destroy_backlight(pcu);
+
+		if (pcu->device_id != IMS_PCU_PCU_B_DEVICE_ID)
+			sysfs_remove_group(&pcu->dev->kobj,
+					   &ims_pcu_ofn_attr_group);
+	}
+}
+
+static int ims_pcu_init_bootloader_mode(struct ims_pcu *pcu)
+{
+	int error;
+
+	error = ims_pcu_execute_bl_command(pcu, QUERY_DEVICE, NULL, 0,
+					   IMS_PCU_CMD_RESPONSE_TIMEOUT);
+	if (error) {
+		dev_err(pcu->dev, "Bootloader does not respond, aborting\n");
+		return error;
+	}
+
+	pcu->fw_start_addr =
+		get_unaligned_le32(&pcu->cmd_buf[IMS_PCU_DATA_OFFSET + 11]);
+	pcu->fw_end_addr =
+		get_unaligned_le32(&pcu->cmd_buf[IMS_PCU_DATA_OFFSET + 15]);
+
+	dev_info(pcu->dev,
+		 "Device is in bootloader mode (addr 0x%08x-0x%08x), requesting firmware\n",
+		 pcu->fw_start_addr, pcu->fw_end_addr);
+
+	error = request_firmware_nowait(THIS_MODULE, true,
+					IMS_PCU_FIRMWARE_NAME,
+					pcu->dev, GFP_KERNEL, pcu,
+					ims_pcu_process_async_firmware);
+	if (error) {
+		/* This error is not fatal, let userspace have another chance */
+		complete(&pcu->async_firmware_done);
+	}
+
+	return 0;
+}
+
+static void ims_pcu_destroy_bootloader_mode(struct ims_pcu *pcu)
+{
+	/* Make sure our initial firmware request has completed */
+	wait_for_completion(&pcu->async_firmware_done);
+}
+
+#define IMS_PCU_APPLICATION_MODE	0
+#define IMS_PCU_BOOTLOADER_MODE		1
+
+static struct usb_driver ims_pcu_driver;
+
+static int ims_pcu_probe(struct usb_interface *intf,
+			 const struct usb_device_id *id)
+{
+	struct usb_device *udev = interface_to_usbdev(intf);
+	struct ims_pcu *pcu;
+	int error;
+
+	pcu = kzalloc(sizeof(struct ims_pcu), GFP_KERNEL);
+	if (!pcu)
+		return -ENOMEM;
+
+	pcu->dev = &intf->dev;
+	pcu->udev = udev;
+	pcu->bootloader_mode = id->driver_info == IMS_PCU_BOOTLOADER_MODE;
+	mutex_init(&pcu->cmd_mutex);
+	init_completion(&pcu->cmd_done);
+	init_completion(&pcu->async_firmware_done);
+
+	error = ims_pcu_parse_cdc_data(intf, pcu);
+	if (error)
+		goto err_free_mem;
+
+	error = usb_driver_claim_interface(&ims_pcu_driver,
+					   pcu->data_intf, pcu);
+	if (error) {
+		dev_err(&intf->dev,
+			"Unable to claim corresponding data interface: %d\n",
+			error);
+		goto err_free_mem;
+	}
+
+	usb_set_intfdata(pcu->ctrl_intf, pcu);
+
+	error = ims_pcu_buffers_alloc(pcu);
+	if (error)
+		goto err_unclaim_intf;
+
+	error = ims_pcu_start_io(pcu);
+	if (error)
+		goto err_free_buffers;
+
+	error = ims_pcu_line_setup(pcu);
+	if (error)
+		goto err_stop_io;
+
+	error = sysfs_create_group(&intf->dev.kobj, &ims_pcu_attr_group);
+	if (error)
+		goto err_stop_io;
+
+	error = pcu->bootloader_mode ?
+			ims_pcu_init_bootloader_mode(pcu) :
+			ims_pcu_init_application_mode(pcu);
+	if (error)
+		goto err_remove_sysfs;
+
+	return 0;
+
+err_remove_sysfs:
+	sysfs_remove_group(&intf->dev.kobj, &ims_pcu_attr_group);
+err_stop_io:
+	ims_pcu_stop_io(pcu);
+err_free_buffers:
+	ims_pcu_buffers_free(pcu);
+err_unclaim_intf:
+	usb_driver_release_interface(&ims_pcu_driver, pcu->data_intf);
+err_free_mem:
+	kfree(pcu);
+	return error;
+}
+
+static void ims_pcu_disconnect(struct usb_interface *intf)
+{
+	struct ims_pcu *pcu = usb_get_intfdata(intf);
+	struct usb_host_interface *alt = intf->cur_altsetting;
+
+	usb_set_intfdata(intf, NULL);
+
+	/*
+	 * See if we are dealing with control or data interface. The cleanup
+	 * happens when we unbind primary (control) interface.
+	 */
+	if (alt->desc.bInterfaceClass != USB_CLASS_COMM)
+		return;
+
+	sysfs_remove_group(&intf->dev.kobj, &ims_pcu_attr_group);
+
+	ims_pcu_stop_io(pcu);
+
+	if (pcu->bootloader_mode)
+		ims_pcu_destroy_bootloader_mode(pcu);
+	else
+		ims_pcu_destroy_application_mode(pcu);
+
+	ims_pcu_buffers_free(pcu);
+	kfree(pcu);
+}
+
+#ifdef CONFIG_PM
+static int ims_pcu_suspend(struct usb_interface *intf,
+			   pm_message_t message)
+{
+	struct ims_pcu *pcu = usb_get_intfdata(intf);
+	struct usb_host_interface *alt = intf->cur_altsetting;
+
+	if (alt->desc.bInterfaceClass == USB_CLASS_COMM)
+		ims_pcu_stop_io(pcu);
+
+	return 0;
+}
+
+static int ims_pcu_resume(struct usb_interface *intf)
+{
+	struct ims_pcu *pcu = usb_get_intfdata(intf);
+	struct usb_host_interface *alt = intf->cur_altsetting;
+	int retval = 0;
+
+	if (alt->desc.bInterfaceClass == USB_CLASS_COMM) {
+		retval = ims_pcu_start_io(pcu);
+		if (retval == 0)
+			retval = ims_pcu_line_setup(pcu);
+	}
+
+	return retval;
+}
+#endif
+
+static const struct usb_device_id ims_pcu_id_table[] = {
+	{
+		USB_DEVICE_AND_INTERFACE_INFO(0x04d8, 0x0082,
+					USB_CLASS_COMM,
+					USB_CDC_SUBCLASS_ACM,
+					USB_CDC_ACM_PROTO_AT_V25TER),
+		.driver_info = IMS_PCU_APPLICATION_MODE,
+	},
+	{
+		USB_DEVICE_AND_INTERFACE_INFO(0x04d8, 0x0083,
+					USB_CLASS_COMM,
+					USB_CDC_SUBCLASS_ACM,
+					USB_CDC_ACM_PROTO_AT_V25TER),
+		.driver_info = IMS_PCU_BOOTLOADER_MODE,
+	},
+	{ }
+};
+
+static struct usb_driver ims_pcu_driver = {
+	.name			= "ims_pcu",
+	.id_table		= ims_pcu_id_table,
+	.probe			= ims_pcu_probe,
+	.disconnect		= ims_pcu_disconnect,
+#ifdef CONFIG_PM
+	.suspend		= ims_pcu_suspend,
+	.resume			= ims_pcu_resume,
+	.reset_resume		= ims_pcu_resume,
+#endif
+};
+
+module_usb_driver(ims_pcu_driver);
+
+MODULE_DESCRIPTION("IMS Passenger Control Unit driver");
+MODULE_AUTHOR("Dmitry Torokhov <dmitry.torokhov@gmail.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/misc/iqs269a.c b/drivers/input/misc/iqs269a.c
new file mode 100644
index 000000000..a348247d3
--- /dev/null
+++ b/drivers/input/misc/iqs269a.c
@@ -0,0 +1,1826 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Azoteq IQS269A Capacitive Touch Controller
+ *
+ * Copyright (C) 2020 Jeff LaBundy <jeff@labundy.com>
+ *
+ * This driver registers up to 3 input devices: one representing capacitive or
+ * inductive keys as well as Hall-effect switches, and one for each of the two
+ * axial sliders presented by the device.
+ */
+
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/of_device.h>
+#include <linux/property.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+
+#define IQS269_VER_INFO				0x00
+#define IQS269_VER_INFO_PROD_NUM		0x4F
+
+#define IQS269_SYS_FLAGS			0x02
+#define IQS269_SYS_FLAGS_SHOW_RESET		BIT(15)
+#define IQS269_SYS_FLAGS_PWR_MODE_MASK		GENMASK(12, 11)
+#define IQS269_SYS_FLAGS_PWR_MODE_SHIFT		11
+#define IQS269_SYS_FLAGS_IN_ATI			BIT(10)
+
+#define IQS269_CHx_COUNTS			0x08
+
+#define IQS269_SLIDER_X				0x30
+
+#define IQS269_CAL_DATA_A			0x35
+#define IQS269_CAL_DATA_A_HALL_BIN_L_MASK	GENMASK(15, 12)
+#define IQS269_CAL_DATA_A_HALL_BIN_L_SHIFT	12
+#define IQS269_CAL_DATA_A_HALL_BIN_R_MASK	GENMASK(11, 8)
+#define IQS269_CAL_DATA_A_HALL_BIN_R_SHIFT	8
+
+#define IQS269_SYS_SETTINGS			0x80
+#define IQS269_SYS_SETTINGS_CLK_DIV		BIT(15)
+#define IQS269_SYS_SETTINGS_ULP_AUTO		BIT(14)
+#define IQS269_SYS_SETTINGS_DIS_AUTO		BIT(13)
+#define IQS269_SYS_SETTINGS_PWR_MODE_MASK	GENMASK(12, 11)
+#define IQS269_SYS_SETTINGS_PWR_MODE_SHIFT	11
+#define IQS269_SYS_SETTINGS_PWR_MODE_MAX	3
+#define IQS269_SYS_SETTINGS_ULP_UPDATE_MASK	GENMASK(10, 8)
+#define IQS269_SYS_SETTINGS_ULP_UPDATE_SHIFT	8
+#define IQS269_SYS_SETTINGS_ULP_UPDATE_MAX	7
+#define IQS269_SYS_SETTINGS_RESEED_OFFSET	BIT(6)
+#define IQS269_SYS_SETTINGS_EVENT_MODE		BIT(5)
+#define IQS269_SYS_SETTINGS_EVENT_MODE_LP	BIT(4)
+#define IQS269_SYS_SETTINGS_REDO_ATI		BIT(2)
+#define IQS269_SYS_SETTINGS_ACK_RESET		BIT(0)
+
+#define IQS269_FILT_STR_LP_LTA_MASK		GENMASK(7, 6)
+#define IQS269_FILT_STR_LP_LTA_SHIFT		6
+#define IQS269_FILT_STR_LP_CNT_MASK		GENMASK(5, 4)
+#define IQS269_FILT_STR_LP_CNT_SHIFT		4
+#define IQS269_FILT_STR_NP_LTA_MASK		GENMASK(3, 2)
+#define IQS269_FILT_STR_NP_LTA_SHIFT		2
+#define IQS269_FILT_STR_NP_CNT_MASK		GENMASK(1, 0)
+#define IQS269_FILT_STR_MAX			3
+
+#define IQS269_EVENT_MASK_SYS			BIT(6)
+#define IQS269_EVENT_MASK_DEEP			BIT(2)
+#define IQS269_EVENT_MASK_TOUCH			BIT(1)
+#define IQS269_EVENT_MASK_PROX			BIT(0)
+
+#define IQS269_RATE_NP_MS_MAX			255
+#define IQS269_RATE_LP_MS_MAX			255
+#define IQS269_RATE_ULP_MS_MAX			4080
+#define IQS269_TIMEOUT_PWR_MS_MAX		130560
+#define IQS269_TIMEOUT_LTA_MS_MAX		130560
+
+#define IQS269_MISC_A_ATI_BAND_DISABLE		BIT(15)
+#define IQS269_MISC_A_ATI_LP_ONLY		BIT(14)
+#define IQS269_MISC_A_ATI_BAND_TIGHTEN		BIT(13)
+#define IQS269_MISC_A_FILT_DISABLE		BIT(12)
+#define IQS269_MISC_A_GPIO3_SELECT_MASK		GENMASK(10, 8)
+#define IQS269_MISC_A_GPIO3_SELECT_SHIFT	8
+#define IQS269_MISC_A_DUAL_DIR			BIT(6)
+#define IQS269_MISC_A_TX_FREQ_MASK		GENMASK(5, 4)
+#define IQS269_MISC_A_TX_FREQ_SHIFT		4
+#define IQS269_MISC_A_TX_FREQ_MAX		3
+#define IQS269_MISC_A_GLOBAL_CAP_SIZE		BIT(0)
+
+#define IQS269_MISC_B_RESEED_UI_SEL_MASK	GENMASK(7, 6)
+#define IQS269_MISC_B_RESEED_UI_SEL_SHIFT	6
+#define IQS269_MISC_B_RESEED_UI_SEL_MAX		3
+#define IQS269_MISC_B_TRACKING_UI_ENABLE	BIT(4)
+#define IQS269_MISC_B_FILT_STR_SLIDER		GENMASK(1, 0)
+
+#define IQS269_CHx_SETTINGS			0x8C
+
+#define IQS269_CHx_ENG_A_MEAS_CAP_SIZE		BIT(15)
+#define IQS269_CHx_ENG_A_RX_GND_INACTIVE	BIT(13)
+#define IQS269_CHx_ENG_A_LOCAL_CAP_SIZE		BIT(12)
+#define IQS269_CHx_ENG_A_ATI_MODE_MASK		GENMASK(9, 8)
+#define IQS269_CHx_ENG_A_ATI_MODE_SHIFT		8
+#define IQS269_CHx_ENG_A_ATI_MODE_MAX		3
+#define IQS269_CHx_ENG_A_INV_LOGIC		BIT(7)
+#define IQS269_CHx_ENG_A_PROJ_BIAS_MASK		GENMASK(6, 5)
+#define IQS269_CHx_ENG_A_PROJ_BIAS_SHIFT	5
+#define IQS269_CHx_ENG_A_PROJ_BIAS_MAX		3
+#define IQS269_CHx_ENG_A_SENSE_MODE_MASK	GENMASK(3, 0)
+#define IQS269_CHx_ENG_A_SENSE_MODE_MAX		15
+
+#define IQS269_CHx_ENG_B_LOCAL_CAP_ENABLE	BIT(13)
+#define IQS269_CHx_ENG_B_SENSE_FREQ_MASK	GENMASK(10, 9)
+#define IQS269_CHx_ENG_B_SENSE_FREQ_SHIFT	9
+#define IQS269_CHx_ENG_B_SENSE_FREQ_MAX		3
+#define IQS269_CHx_ENG_B_STATIC_ENABLE		BIT(8)
+#define IQS269_CHx_ENG_B_ATI_BASE_MASK		GENMASK(7, 6)
+#define IQS269_CHx_ENG_B_ATI_BASE_75		0x00
+#define IQS269_CHx_ENG_B_ATI_BASE_100		0x40
+#define IQS269_CHx_ENG_B_ATI_BASE_150		0x80
+#define IQS269_CHx_ENG_B_ATI_BASE_200		0xC0
+#define IQS269_CHx_ENG_B_ATI_TARGET_MASK	GENMASK(5, 0)
+#define IQS269_CHx_ENG_B_ATI_TARGET_MAX		2016
+
+#define IQS269_CHx_WEIGHT_MAX			255
+#define IQS269_CHx_THRESH_MAX			255
+#define IQS269_CHx_HYST_DEEP_MASK		GENMASK(7, 4)
+#define IQS269_CHx_HYST_DEEP_SHIFT		4
+#define IQS269_CHx_HYST_TOUCH_MASK		GENMASK(3, 0)
+#define IQS269_CHx_HYST_MAX			15
+
+#define IQS269_CHx_HALL_INACTIVE		6
+#define IQS269_CHx_HALL_ACTIVE			7
+
+#define IQS269_HALL_PAD_R			BIT(0)
+#define IQS269_HALL_PAD_L			BIT(1)
+#define IQS269_HALL_PAD_INV			BIT(6)
+
+#define IQS269_HALL_UI				0xF5
+#define IQS269_HALL_UI_ENABLE			BIT(15)
+
+#define IQS269_MAX_REG				0xFF
+
+#define IQS269_NUM_CH				8
+#define IQS269_NUM_SL				2
+
+#define IQS269_ATI_POLL_SLEEP_US		(iqs269->delay_mult * 10000)
+#define IQS269_ATI_POLL_TIMEOUT_US		(iqs269->delay_mult * 500000)
+#define IQS269_ATI_STABLE_DELAY_MS		(iqs269->delay_mult * 150)
+
+#define IQS269_PWR_MODE_POLL_SLEEP_US		IQS269_ATI_POLL_SLEEP_US
+#define IQS269_PWR_MODE_POLL_TIMEOUT_US		IQS269_ATI_POLL_TIMEOUT_US
+
+#define iqs269_irq_wait()			usleep_range(100, 150)
+
+enum iqs269_local_cap_size {
+	IQS269_LOCAL_CAP_SIZE_0,
+	IQS269_LOCAL_CAP_SIZE_GLOBAL_ONLY,
+	IQS269_LOCAL_CAP_SIZE_GLOBAL_0pF5,
+};
+
+enum iqs269_st_offs {
+	IQS269_ST_OFFS_PROX,
+	IQS269_ST_OFFS_DIR,
+	IQS269_ST_OFFS_TOUCH,
+	IQS269_ST_OFFS_DEEP,
+};
+
+enum iqs269_th_offs {
+	IQS269_TH_OFFS_PROX,
+	IQS269_TH_OFFS_TOUCH,
+	IQS269_TH_OFFS_DEEP,
+};
+
+enum iqs269_event_id {
+	IQS269_EVENT_PROX_DN,
+	IQS269_EVENT_PROX_UP,
+	IQS269_EVENT_TOUCH_DN,
+	IQS269_EVENT_TOUCH_UP,
+	IQS269_EVENT_DEEP_DN,
+	IQS269_EVENT_DEEP_UP,
+};
+
+struct iqs269_switch_desc {
+	unsigned int code;
+	bool enabled;
+};
+
+struct iqs269_event_desc {
+	const char *name;
+	enum iqs269_st_offs st_offs;
+	enum iqs269_th_offs th_offs;
+	bool dir_up;
+	u8 mask;
+};
+
+static const struct iqs269_event_desc iqs269_events[] = {
+	[IQS269_EVENT_PROX_DN] = {
+		.name = "event-prox",
+		.st_offs = IQS269_ST_OFFS_PROX,
+		.th_offs = IQS269_TH_OFFS_PROX,
+		.mask = IQS269_EVENT_MASK_PROX,
+	},
+	[IQS269_EVENT_PROX_UP] = {
+		.name = "event-prox-alt",
+		.st_offs = IQS269_ST_OFFS_PROX,
+		.th_offs = IQS269_TH_OFFS_PROX,
+		.dir_up = true,
+		.mask = IQS269_EVENT_MASK_PROX,
+	},
+	[IQS269_EVENT_TOUCH_DN] = {
+		.name = "event-touch",
+		.st_offs = IQS269_ST_OFFS_TOUCH,
+		.th_offs = IQS269_TH_OFFS_TOUCH,
+		.mask = IQS269_EVENT_MASK_TOUCH,
+	},
+	[IQS269_EVENT_TOUCH_UP] = {
+		.name = "event-touch-alt",
+		.st_offs = IQS269_ST_OFFS_TOUCH,
+		.th_offs = IQS269_TH_OFFS_TOUCH,
+		.dir_up = true,
+		.mask = IQS269_EVENT_MASK_TOUCH,
+	},
+	[IQS269_EVENT_DEEP_DN] = {
+		.name = "event-deep",
+		.st_offs = IQS269_ST_OFFS_DEEP,
+		.th_offs = IQS269_TH_OFFS_DEEP,
+		.mask = IQS269_EVENT_MASK_DEEP,
+	},
+	[IQS269_EVENT_DEEP_UP] = {
+		.name = "event-deep-alt",
+		.st_offs = IQS269_ST_OFFS_DEEP,
+		.th_offs = IQS269_TH_OFFS_DEEP,
+		.dir_up = true,
+		.mask = IQS269_EVENT_MASK_DEEP,
+	},
+};
+
+struct iqs269_ver_info {
+	u8 prod_num;
+	u8 sw_num;
+	u8 hw_num;
+	u8 padding;
+} __packed;
+
+struct iqs269_sys_reg {
+	__be16 general;
+	u8 active;
+	u8 filter;
+	u8 reseed;
+	u8 event_mask;
+	u8 rate_np;
+	u8 rate_lp;
+	u8 rate_ulp;
+	u8 timeout_pwr;
+	u8 timeout_rdy;
+	u8 timeout_lta;
+	__be16 misc_a;
+	__be16 misc_b;
+	u8 blocking;
+	u8 padding;
+	u8 slider_select[IQS269_NUM_SL];
+	u8 timeout_tap;
+	u8 timeout_swipe;
+	u8 thresh_swipe;
+	u8 redo_ati;
+} __packed;
+
+struct iqs269_ch_reg {
+	u8 rx_enable;
+	u8 tx_enable;
+	__be16 engine_a;
+	__be16 engine_b;
+	__be16 ati_comp;
+	u8 thresh[3];
+	u8 hyst;
+	u8 assoc_select;
+	u8 assoc_weight;
+} __packed;
+
+struct iqs269_flags {
+	__be16 system;
+	u8 gesture;
+	u8 padding;
+	u8 states[4];
+} __packed;
+
+struct iqs269_private {
+	struct i2c_client *client;
+	struct regmap *regmap;
+	struct mutex lock;
+	struct iqs269_switch_desc switches[ARRAY_SIZE(iqs269_events)];
+	struct iqs269_ch_reg ch_reg[IQS269_NUM_CH];
+	struct iqs269_sys_reg sys_reg;
+	struct input_dev *keypad;
+	struct input_dev *slider[IQS269_NUM_SL];
+	unsigned int keycode[ARRAY_SIZE(iqs269_events) * IQS269_NUM_CH];
+	unsigned int suspend_mode;
+	unsigned int delay_mult;
+	unsigned int ch_num;
+	bool hall_enable;
+	bool ati_current;
+};
+
+static int iqs269_ati_mode_set(struct iqs269_private *iqs269,
+			       unsigned int ch_num, unsigned int mode)
+{
+	u16 engine_a;
+
+	if (ch_num >= IQS269_NUM_CH)
+		return -EINVAL;
+
+	if (mode > IQS269_CHx_ENG_A_ATI_MODE_MAX)
+		return -EINVAL;
+
+	mutex_lock(&iqs269->lock);
+
+	engine_a = be16_to_cpu(iqs269->ch_reg[ch_num].engine_a);
+
+	engine_a &= ~IQS269_CHx_ENG_A_ATI_MODE_MASK;
+	engine_a |= (mode << IQS269_CHx_ENG_A_ATI_MODE_SHIFT);
+
+	iqs269->ch_reg[ch_num].engine_a = cpu_to_be16(engine_a);
+	iqs269->ati_current = false;
+
+	mutex_unlock(&iqs269->lock);
+
+	return 0;
+}
+
+static int iqs269_ati_mode_get(struct iqs269_private *iqs269,
+			       unsigned int ch_num, unsigned int *mode)
+{
+	u16 engine_a;
+
+	if (ch_num >= IQS269_NUM_CH)
+		return -EINVAL;
+
+	mutex_lock(&iqs269->lock);
+	engine_a = be16_to_cpu(iqs269->ch_reg[ch_num].engine_a);
+	mutex_unlock(&iqs269->lock);
+
+	engine_a &= IQS269_CHx_ENG_A_ATI_MODE_MASK;
+	*mode = (engine_a >> IQS269_CHx_ENG_A_ATI_MODE_SHIFT);
+
+	return 0;
+}
+
+static int iqs269_ati_base_set(struct iqs269_private *iqs269,
+			       unsigned int ch_num, unsigned int base)
+{
+	u16 engine_b;
+
+	if (ch_num >= IQS269_NUM_CH)
+		return -EINVAL;
+
+	switch (base) {
+	case 75:
+		base = IQS269_CHx_ENG_B_ATI_BASE_75;
+		break;
+
+	case 100:
+		base = IQS269_CHx_ENG_B_ATI_BASE_100;
+		break;
+
+	case 150:
+		base = IQS269_CHx_ENG_B_ATI_BASE_150;
+		break;
+
+	case 200:
+		base = IQS269_CHx_ENG_B_ATI_BASE_200;
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	mutex_lock(&iqs269->lock);
+
+	engine_b = be16_to_cpu(iqs269->ch_reg[ch_num].engine_b);
+
+	engine_b &= ~IQS269_CHx_ENG_B_ATI_BASE_MASK;
+	engine_b |= base;
+
+	iqs269->ch_reg[ch_num].engine_b = cpu_to_be16(engine_b);
+	iqs269->ati_current = false;
+
+	mutex_unlock(&iqs269->lock);
+
+	return 0;
+}
+
+static int iqs269_ati_base_get(struct iqs269_private *iqs269,
+			       unsigned int ch_num, unsigned int *base)
+{
+	u16 engine_b;
+
+	if (ch_num >= IQS269_NUM_CH)
+		return -EINVAL;
+
+	mutex_lock(&iqs269->lock);
+	engine_b = be16_to_cpu(iqs269->ch_reg[ch_num].engine_b);
+	mutex_unlock(&iqs269->lock);
+
+	switch (engine_b & IQS269_CHx_ENG_B_ATI_BASE_MASK) {
+	case IQS269_CHx_ENG_B_ATI_BASE_75:
+		*base = 75;
+		return 0;
+
+	case IQS269_CHx_ENG_B_ATI_BASE_100:
+		*base = 100;
+		return 0;
+
+	case IQS269_CHx_ENG_B_ATI_BASE_150:
+		*base = 150;
+		return 0;
+
+	case IQS269_CHx_ENG_B_ATI_BASE_200:
+		*base = 200;
+		return 0;
+
+	default:
+		return -EINVAL;
+	}
+}
+
+static int iqs269_ati_target_set(struct iqs269_private *iqs269,
+				 unsigned int ch_num, unsigned int target)
+{
+	u16 engine_b;
+
+	if (ch_num >= IQS269_NUM_CH)
+		return -EINVAL;
+
+	if (target > IQS269_CHx_ENG_B_ATI_TARGET_MAX)
+		return -EINVAL;
+
+	mutex_lock(&iqs269->lock);
+
+	engine_b = be16_to_cpu(iqs269->ch_reg[ch_num].engine_b);
+
+	engine_b &= ~IQS269_CHx_ENG_B_ATI_TARGET_MASK;
+	engine_b |= target / 32;
+
+	iqs269->ch_reg[ch_num].engine_b = cpu_to_be16(engine_b);
+	iqs269->ati_current = false;
+
+	mutex_unlock(&iqs269->lock);
+
+	return 0;
+}
+
+static int iqs269_ati_target_get(struct iqs269_private *iqs269,
+				 unsigned int ch_num, unsigned int *target)
+{
+	u16 engine_b;
+
+	if (ch_num >= IQS269_NUM_CH)
+		return -EINVAL;
+
+	mutex_lock(&iqs269->lock);
+	engine_b = be16_to_cpu(iqs269->ch_reg[ch_num].engine_b);
+	mutex_unlock(&iqs269->lock);
+
+	*target = (engine_b & IQS269_CHx_ENG_B_ATI_TARGET_MASK) * 32;
+
+	return 0;
+}
+
+static int iqs269_parse_mask(const struct fwnode_handle *fwnode,
+			     const char *propname, u8 *mask)
+{
+	unsigned int val[IQS269_NUM_CH];
+	int count, error, i;
+
+	count = fwnode_property_count_u32(fwnode, propname);
+	if (count < 0)
+		return 0;
+
+	if (count > IQS269_NUM_CH)
+		return -EINVAL;
+
+	error = fwnode_property_read_u32_array(fwnode, propname, val, count);
+	if (error)
+		return error;
+
+	*mask = 0;
+
+	for (i = 0; i < count; i++) {
+		if (val[i] >= IQS269_NUM_CH)
+			return -EINVAL;
+
+		*mask |= BIT(val[i]);
+	}
+
+	return 0;
+}
+
+static int iqs269_parse_chan(struct iqs269_private *iqs269,
+			     const struct fwnode_handle *ch_node)
+{
+	struct i2c_client *client = iqs269->client;
+	struct fwnode_handle *ev_node;
+	struct iqs269_ch_reg *ch_reg;
+	u16 engine_a, engine_b;
+	unsigned int reg, val;
+	int error, i;
+
+	error = fwnode_property_read_u32(ch_node, "reg", &reg);
+	if (error) {
+		dev_err(&client->dev, "Failed to read channel number: %d\n",
+			error);
+		return error;
+	} else if (reg >= IQS269_NUM_CH) {
+		dev_err(&client->dev, "Invalid channel number: %u\n", reg);
+		return -EINVAL;
+	}
+
+	iqs269->sys_reg.active |= BIT(reg);
+	if (!fwnode_property_present(ch_node, "azoteq,reseed-disable"))
+		iqs269->sys_reg.reseed |= BIT(reg);
+
+	if (fwnode_property_present(ch_node, "azoteq,blocking-enable"))
+		iqs269->sys_reg.blocking |= BIT(reg);
+
+	if (fwnode_property_present(ch_node, "azoteq,slider0-select"))
+		iqs269->sys_reg.slider_select[0] |= BIT(reg);
+
+	if (fwnode_property_present(ch_node, "azoteq,slider1-select"))
+		iqs269->sys_reg.slider_select[1] |= BIT(reg);
+
+	ch_reg = &iqs269->ch_reg[reg];
+
+	error = regmap_raw_read(iqs269->regmap,
+				IQS269_CHx_SETTINGS + reg * sizeof(*ch_reg) / 2,
+				ch_reg, sizeof(*ch_reg));
+	if (error)
+		return error;
+
+	error = iqs269_parse_mask(ch_node, "azoteq,rx-enable",
+				  &ch_reg->rx_enable);
+	if (error) {
+		dev_err(&client->dev, "Invalid channel %u RX enable mask: %d\n",
+			reg, error);
+		return error;
+	}
+
+	error = iqs269_parse_mask(ch_node, "azoteq,tx-enable",
+				  &ch_reg->tx_enable);
+	if (error) {
+		dev_err(&client->dev, "Invalid channel %u TX enable mask: %d\n",
+			reg, error);
+		return error;
+	}
+
+	engine_a = be16_to_cpu(ch_reg->engine_a);
+	engine_b = be16_to_cpu(ch_reg->engine_b);
+
+	engine_a |= IQS269_CHx_ENG_A_MEAS_CAP_SIZE;
+	if (fwnode_property_present(ch_node, "azoteq,meas-cap-decrease"))
+		engine_a &= ~IQS269_CHx_ENG_A_MEAS_CAP_SIZE;
+
+	engine_a |= IQS269_CHx_ENG_A_RX_GND_INACTIVE;
+	if (fwnode_property_present(ch_node, "azoteq,rx-float-inactive"))
+		engine_a &= ~IQS269_CHx_ENG_A_RX_GND_INACTIVE;
+
+	engine_a &= ~IQS269_CHx_ENG_A_LOCAL_CAP_SIZE;
+	engine_b &= ~IQS269_CHx_ENG_B_LOCAL_CAP_ENABLE;
+	if (!fwnode_property_read_u32(ch_node, "azoteq,local-cap-size", &val)) {
+		switch (val) {
+		case IQS269_LOCAL_CAP_SIZE_0:
+			break;
+
+		case IQS269_LOCAL_CAP_SIZE_GLOBAL_0pF5:
+			engine_a |= IQS269_CHx_ENG_A_LOCAL_CAP_SIZE;
+			fallthrough;
+
+		case IQS269_LOCAL_CAP_SIZE_GLOBAL_ONLY:
+			engine_b |= IQS269_CHx_ENG_B_LOCAL_CAP_ENABLE;
+			break;
+
+		default:
+			dev_err(&client->dev,
+				"Invalid channel %u local cap. size: %u\n", reg,
+				val);
+			return -EINVAL;
+		}
+	}
+
+	engine_a &= ~IQS269_CHx_ENG_A_INV_LOGIC;
+	if (fwnode_property_present(ch_node, "azoteq,invert-enable"))
+		engine_a |= IQS269_CHx_ENG_A_INV_LOGIC;
+
+	if (!fwnode_property_read_u32(ch_node, "azoteq,proj-bias", &val)) {
+		if (val > IQS269_CHx_ENG_A_PROJ_BIAS_MAX) {
+			dev_err(&client->dev,
+				"Invalid channel %u bias current: %u\n", reg,
+				val);
+			return -EINVAL;
+		}
+
+		engine_a &= ~IQS269_CHx_ENG_A_PROJ_BIAS_MASK;
+		engine_a |= (val << IQS269_CHx_ENG_A_PROJ_BIAS_SHIFT);
+	}
+
+	if (!fwnode_property_read_u32(ch_node, "azoteq,sense-mode", &val)) {
+		if (val > IQS269_CHx_ENG_A_SENSE_MODE_MAX) {
+			dev_err(&client->dev,
+				"Invalid channel %u sensing mode: %u\n", reg,
+				val);
+			return -EINVAL;
+		}
+
+		engine_a &= ~IQS269_CHx_ENG_A_SENSE_MODE_MASK;
+		engine_a |= val;
+	}
+
+	if (!fwnode_property_read_u32(ch_node, "azoteq,sense-freq", &val)) {
+		if (val > IQS269_CHx_ENG_B_SENSE_FREQ_MAX) {
+			dev_err(&client->dev,
+				"Invalid channel %u sensing frequency: %u\n",
+				reg, val);
+			return -EINVAL;
+		}
+
+		engine_b &= ~IQS269_CHx_ENG_B_SENSE_FREQ_MASK;
+		engine_b |= (val << IQS269_CHx_ENG_B_SENSE_FREQ_SHIFT);
+	}
+
+	engine_b &= ~IQS269_CHx_ENG_B_STATIC_ENABLE;
+	if (fwnode_property_present(ch_node, "azoteq,static-enable"))
+		engine_b |= IQS269_CHx_ENG_B_STATIC_ENABLE;
+
+	ch_reg->engine_a = cpu_to_be16(engine_a);
+	ch_reg->engine_b = cpu_to_be16(engine_b);
+
+	if (!fwnode_property_read_u32(ch_node, "azoteq,ati-mode", &val)) {
+		error = iqs269_ati_mode_set(iqs269, reg, val);
+		if (error) {
+			dev_err(&client->dev,
+				"Invalid channel %u ATI mode: %u\n", reg, val);
+			return error;
+		}
+	}
+
+	if (!fwnode_property_read_u32(ch_node, "azoteq,ati-base", &val)) {
+		error = iqs269_ati_base_set(iqs269, reg, val);
+		if (error) {
+			dev_err(&client->dev,
+				"Invalid channel %u ATI base: %u\n", reg, val);
+			return error;
+		}
+	}
+
+	if (!fwnode_property_read_u32(ch_node, "azoteq,ati-target", &val)) {
+		error = iqs269_ati_target_set(iqs269, reg, val);
+		if (error) {
+			dev_err(&client->dev,
+				"Invalid channel %u ATI target: %u\n", reg,
+				val);
+			return error;
+		}
+	}
+
+	error = iqs269_parse_mask(ch_node, "azoteq,assoc-select",
+				  &ch_reg->assoc_select);
+	if (error) {
+		dev_err(&client->dev, "Invalid channel %u association: %d\n",
+			reg, error);
+		return error;
+	}
+
+	if (!fwnode_property_read_u32(ch_node, "azoteq,assoc-weight", &val)) {
+		if (val > IQS269_CHx_WEIGHT_MAX) {
+			dev_err(&client->dev,
+				"Invalid channel %u associated weight: %u\n",
+				reg, val);
+			return -EINVAL;
+		}
+
+		ch_reg->assoc_weight = val;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(iqs269_events); i++) {
+		ev_node = fwnode_get_named_child_node(ch_node,
+						      iqs269_events[i].name);
+		if (!ev_node)
+			continue;
+
+		if (!fwnode_property_read_u32(ev_node, "azoteq,thresh", &val)) {
+			if (val > IQS269_CHx_THRESH_MAX) {
+				dev_err(&client->dev,
+					"Invalid channel %u threshold: %u\n",
+					reg, val);
+				return -EINVAL;
+			}
+
+			ch_reg->thresh[iqs269_events[i].th_offs] = val;
+		}
+
+		if (!fwnode_property_read_u32(ev_node, "azoteq,hyst", &val)) {
+			u8 *hyst = &ch_reg->hyst;
+
+			if (val > IQS269_CHx_HYST_MAX) {
+				dev_err(&client->dev,
+					"Invalid channel %u hysteresis: %u\n",
+					reg, val);
+				return -EINVAL;
+			}
+
+			if (i == IQS269_EVENT_DEEP_DN ||
+			    i == IQS269_EVENT_DEEP_UP) {
+				*hyst &= ~IQS269_CHx_HYST_DEEP_MASK;
+				*hyst |= (val << IQS269_CHx_HYST_DEEP_SHIFT);
+			} else if (i == IQS269_EVENT_TOUCH_DN ||
+				   i == IQS269_EVENT_TOUCH_UP) {
+				*hyst &= ~IQS269_CHx_HYST_TOUCH_MASK;
+				*hyst |= val;
+			}
+		}
+
+		if (fwnode_property_read_u32(ev_node, "linux,code", &val))
+			continue;
+
+		switch (reg) {
+		case IQS269_CHx_HALL_ACTIVE:
+			if (iqs269->hall_enable) {
+				iqs269->switches[i].code = val;
+				iqs269->switches[i].enabled = true;
+			}
+			fallthrough;
+
+		case IQS269_CHx_HALL_INACTIVE:
+			if (iqs269->hall_enable)
+				break;
+			fallthrough;
+
+		default:
+			iqs269->keycode[i * IQS269_NUM_CH + reg] = val;
+		}
+
+		iqs269->sys_reg.event_mask &= ~iqs269_events[i].mask;
+	}
+
+	return 0;
+}
+
+static int iqs269_parse_prop(struct iqs269_private *iqs269)
+{
+	struct iqs269_sys_reg *sys_reg = &iqs269->sys_reg;
+	struct i2c_client *client = iqs269->client;
+	struct fwnode_handle *ch_node;
+	u16 general, misc_a, misc_b;
+	unsigned int val;
+	int error;
+
+	iqs269->hall_enable = device_property_present(&client->dev,
+						      "azoteq,hall-enable");
+
+	if (!device_property_read_u32(&client->dev, "azoteq,suspend-mode",
+				      &val)) {
+		if (val > IQS269_SYS_SETTINGS_PWR_MODE_MAX) {
+			dev_err(&client->dev, "Invalid suspend mode: %u\n",
+				val);
+			return -EINVAL;
+		}
+
+		iqs269->suspend_mode = val;
+	}
+
+	error = regmap_raw_read(iqs269->regmap, IQS269_SYS_SETTINGS, sys_reg,
+				sizeof(*sys_reg));
+	if (error)
+		return error;
+
+	if (!device_property_read_u32(&client->dev, "azoteq,filt-str-lp-lta",
+				      &val)) {
+		if (val > IQS269_FILT_STR_MAX) {
+			dev_err(&client->dev, "Invalid filter strength: %u\n",
+				val);
+			return -EINVAL;
+		}
+
+		sys_reg->filter &= ~IQS269_FILT_STR_LP_LTA_MASK;
+		sys_reg->filter |= (val << IQS269_FILT_STR_LP_LTA_SHIFT);
+	}
+
+	if (!device_property_read_u32(&client->dev, "azoteq,filt-str-lp-cnt",
+				      &val)) {
+		if (val > IQS269_FILT_STR_MAX) {
+			dev_err(&client->dev, "Invalid filter strength: %u\n",
+				val);
+			return -EINVAL;
+		}
+
+		sys_reg->filter &= ~IQS269_FILT_STR_LP_CNT_MASK;
+		sys_reg->filter |= (val << IQS269_FILT_STR_LP_CNT_SHIFT);
+	}
+
+	if (!device_property_read_u32(&client->dev, "azoteq,filt-str-np-lta",
+				      &val)) {
+		if (val > IQS269_FILT_STR_MAX) {
+			dev_err(&client->dev, "Invalid filter strength: %u\n",
+				val);
+			return -EINVAL;
+		}
+
+		sys_reg->filter &= ~IQS269_FILT_STR_NP_LTA_MASK;
+		sys_reg->filter |= (val << IQS269_FILT_STR_NP_LTA_SHIFT);
+	}
+
+	if (!device_property_read_u32(&client->dev, "azoteq,filt-str-np-cnt",
+				      &val)) {
+		if (val > IQS269_FILT_STR_MAX) {
+			dev_err(&client->dev, "Invalid filter strength: %u\n",
+				val);
+			return -EINVAL;
+		}
+
+		sys_reg->filter &= ~IQS269_FILT_STR_NP_CNT_MASK;
+		sys_reg->filter |= val;
+	}
+
+	if (!device_property_read_u32(&client->dev, "azoteq,rate-np-ms",
+				      &val)) {
+		if (val > IQS269_RATE_NP_MS_MAX) {
+			dev_err(&client->dev, "Invalid report rate: %u\n", val);
+			return -EINVAL;
+		}
+
+		sys_reg->rate_np = val;
+	}
+
+	if (!device_property_read_u32(&client->dev, "azoteq,rate-lp-ms",
+				      &val)) {
+		if (val > IQS269_RATE_LP_MS_MAX) {
+			dev_err(&client->dev, "Invalid report rate: %u\n", val);
+			return -EINVAL;
+		}
+
+		sys_reg->rate_lp = val;
+	}
+
+	if (!device_property_read_u32(&client->dev, "azoteq,rate-ulp-ms",
+				      &val)) {
+		if (val > IQS269_RATE_ULP_MS_MAX) {
+			dev_err(&client->dev, "Invalid report rate: %u\n", val);
+			return -EINVAL;
+		}
+
+		sys_reg->rate_ulp = val / 16;
+	}
+
+	if (!device_property_read_u32(&client->dev, "azoteq,timeout-pwr-ms",
+				      &val)) {
+		if (val > IQS269_TIMEOUT_PWR_MS_MAX) {
+			dev_err(&client->dev, "Invalid timeout: %u\n", val);
+			return -EINVAL;
+		}
+
+		sys_reg->timeout_pwr = val / 512;
+	}
+
+	if (!device_property_read_u32(&client->dev, "azoteq,timeout-lta-ms",
+				      &val)) {
+		if (val > IQS269_TIMEOUT_LTA_MS_MAX) {
+			dev_err(&client->dev, "Invalid timeout: %u\n", val);
+			return -EINVAL;
+		}
+
+		sys_reg->timeout_lta = val / 512;
+	}
+
+	misc_a = be16_to_cpu(sys_reg->misc_a);
+	misc_b = be16_to_cpu(sys_reg->misc_b);
+
+	misc_a &= ~IQS269_MISC_A_ATI_BAND_DISABLE;
+	if (device_property_present(&client->dev, "azoteq,ati-band-disable"))
+		misc_a |= IQS269_MISC_A_ATI_BAND_DISABLE;
+
+	misc_a &= ~IQS269_MISC_A_ATI_LP_ONLY;
+	if (device_property_present(&client->dev, "azoteq,ati-lp-only"))
+		misc_a |= IQS269_MISC_A_ATI_LP_ONLY;
+
+	misc_a &= ~IQS269_MISC_A_ATI_BAND_TIGHTEN;
+	if (device_property_present(&client->dev, "azoteq,ati-band-tighten"))
+		misc_a |= IQS269_MISC_A_ATI_BAND_TIGHTEN;
+
+	misc_a &= ~IQS269_MISC_A_FILT_DISABLE;
+	if (device_property_present(&client->dev, "azoteq,filt-disable"))
+		misc_a |= IQS269_MISC_A_FILT_DISABLE;
+
+	if (!device_property_read_u32(&client->dev, "azoteq,gpio3-select",
+				      &val)) {
+		if (val >= IQS269_NUM_CH) {
+			dev_err(&client->dev, "Invalid GPIO3 selection: %u\n",
+				val);
+			return -EINVAL;
+		}
+
+		misc_a &= ~IQS269_MISC_A_GPIO3_SELECT_MASK;
+		misc_a |= (val << IQS269_MISC_A_GPIO3_SELECT_SHIFT);
+	}
+
+	misc_a &= ~IQS269_MISC_A_DUAL_DIR;
+	if (device_property_present(&client->dev, "azoteq,dual-direction"))
+		misc_a |= IQS269_MISC_A_DUAL_DIR;
+
+	if (!device_property_read_u32(&client->dev, "azoteq,tx-freq", &val)) {
+		if (val > IQS269_MISC_A_TX_FREQ_MAX) {
+			dev_err(&client->dev,
+				"Invalid excitation frequency: %u\n", val);
+			return -EINVAL;
+		}
+
+		misc_a &= ~IQS269_MISC_A_TX_FREQ_MASK;
+		misc_a |= (val << IQS269_MISC_A_TX_FREQ_SHIFT);
+	}
+
+	misc_a &= ~IQS269_MISC_A_GLOBAL_CAP_SIZE;
+	if (device_property_present(&client->dev, "azoteq,global-cap-increase"))
+		misc_a |= IQS269_MISC_A_GLOBAL_CAP_SIZE;
+
+	if (!device_property_read_u32(&client->dev, "azoteq,reseed-select",
+				      &val)) {
+		if (val > IQS269_MISC_B_RESEED_UI_SEL_MAX) {
+			dev_err(&client->dev, "Invalid reseed selection: %u\n",
+				val);
+			return -EINVAL;
+		}
+
+		misc_b &= ~IQS269_MISC_B_RESEED_UI_SEL_MASK;
+		misc_b |= (val << IQS269_MISC_B_RESEED_UI_SEL_SHIFT);
+	}
+
+	misc_b &= ~IQS269_MISC_B_TRACKING_UI_ENABLE;
+	if (device_property_present(&client->dev, "azoteq,tracking-enable"))
+		misc_b |= IQS269_MISC_B_TRACKING_UI_ENABLE;
+
+	if (!device_property_read_u32(&client->dev, "azoteq,filt-str-slider",
+				      &val)) {
+		if (val > IQS269_FILT_STR_MAX) {
+			dev_err(&client->dev, "Invalid filter strength: %u\n",
+				val);
+			return -EINVAL;
+		}
+
+		misc_b &= ~IQS269_MISC_B_FILT_STR_SLIDER;
+		misc_b |= val;
+	}
+
+	sys_reg->misc_a = cpu_to_be16(misc_a);
+	sys_reg->misc_b = cpu_to_be16(misc_b);
+
+	sys_reg->active = 0;
+	sys_reg->reseed = 0;
+
+	sys_reg->blocking = 0;
+
+	sys_reg->slider_select[0] = 0;
+	sys_reg->slider_select[1] = 0;
+
+	sys_reg->event_mask = ~((u8)IQS269_EVENT_MASK_SYS);
+
+	device_for_each_child_node(&client->dev, ch_node) {
+		error = iqs269_parse_chan(iqs269, ch_node);
+		if (error) {
+			fwnode_handle_put(ch_node);
+			return error;
+		}
+	}
+
+	/*
+	 * Volunteer all active channels to participate in ATI when REDO-ATI is
+	 * manually triggered.
+	 */
+	sys_reg->redo_ati = sys_reg->active;
+
+	general = be16_to_cpu(sys_reg->general);
+
+	if (device_property_present(&client->dev, "azoteq,clk-div")) {
+		general |= IQS269_SYS_SETTINGS_CLK_DIV;
+		iqs269->delay_mult = 4;
+	} else {
+		general &= ~IQS269_SYS_SETTINGS_CLK_DIV;
+		iqs269->delay_mult = 1;
+	}
+
+	/*
+	 * Configure the device to automatically switch between normal and low-
+	 * power modes as a function of sensing activity. Ultra-low-power mode,
+	 * if enabled, is reserved for suspend.
+	 */
+	general &= ~IQS269_SYS_SETTINGS_ULP_AUTO;
+	general &= ~IQS269_SYS_SETTINGS_DIS_AUTO;
+	general &= ~IQS269_SYS_SETTINGS_PWR_MODE_MASK;
+
+	if (!device_property_read_u32(&client->dev, "azoteq,ulp-update",
+				      &val)) {
+		if (val > IQS269_SYS_SETTINGS_ULP_UPDATE_MAX) {
+			dev_err(&client->dev, "Invalid update rate: %u\n", val);
+			return -EINVAL;
+		}
+
+		general &= ~IQS269_SYS_SETTINGS_ULP_UPDATE_MASK;
+		general |= (val << IQS269_SYS_SETTINGS_ULP_UPDATE_SHIFT);
+	}
+
+	general &= ~IQS269_SYS_SETTINGS_RESEED_OFFSET;
+	if (device_property_present(&client->dev, "azoteq,reseed-offset"))
+		general |= IQS269_SYS_SETTINGS_RESEED_OFFSET;
+
+	general |= IQS269_SYS_SETTINGS_EVENT_MODE;
+
+	/*
+	 * As per the datasheet, enable streaming during normal-power mode if
+	 * either slider is in use. In that case, the device returns to event
+	 * mode during low-power mode.
+	 */
+	if (sys_reg->slider_select[0] || sys_reg->slider_select[1])
+		general |= IQS269_SYS_SETTINGS_EVENT_MODE_LP;
+
+	general |= IQS269_SYS_SETTINGS_REDO_ATI;
+	general |= IQS269_SYS_SETTINGS_ACK_RESET;
+
+	sys_reg->general = cpu_to_be16(general);
+
+	return 0;
+}
+
+static int iqs269_dev_init(struct iqs269_private *iqs269)
+{
+	struct iqs269_sys_reg *sys_reg = &iqs269->sys_reg;
+	struct iqs269_ch_reg *ch_reg;
+	unsigned int val;
+	int error, i;
+
+	mutex_lock(&iqs269->lock);
+
+	error = regmap_update_bits(iqs269->regmap, IQS269_HALL_UI,
+				   IQS269_HALL_UI_ENABLE,
+				   iqs269->hall_enable ? ~0 : 0);
+	if (error)
+		goto err_mutex;
+
+	for (i = 0; i < IQS269_NUM_CH; i++) {
+		if (!(sys_reg->active & BIT(i)))
+			continue;
+
+		ch_reg = &iqs269->ch_reg[i];
+
+		error = regmap_raw_write(iqs269->regmap,
+					 IQS269_CHx_SETTINGS + i *
+					 sizeof(*ch_reg) / 2, ch_reg,
+					 sizeof(*ch_reg));
+		if (error)
+			goto err_mutex;
+	}
+
+	/*
+	 * The REDO-ATI and ATI channel selection fields must be written in the
+	 * same block write, so every field between registers 0x80 through 0x8B
+	 * (inclusive) must be written as well.
+	 */
+	error = regmap_raw_write(iqs269->regmap, IQS269_SYS_SETTINGS, sys_reg,
+				 sizeof(*sys_reg));
+	if (error)
+		goto err_mutex;
+
+	error = regmap_read_poll_timeout(iqs269->regmap, IQS269_SYS_FLAGS, val,
+					!(val & IQS269_SYS_FLAGS_IN_ATI),
+					 IQS269_ATI_POLL_SLEEP_US,
+					 IQS269_ATI_POLL_TIMEOUT_US);
+	if (error)
+		goto err_mutex;
+
+	msleep(IQS269_ATI_STABLE_DELAY_MS);
+	iqs269->ati_current = true;
+
+err_mutex:
+	mutex_unlock(&iqs269->lock);
+
+	return error;
+}
+
+static int iqs269_input_init(struct iqs269_private *iqs269)
+{
+	struct i2c_client *client = iqs269->client;
+	struct iqs269_flags flags;
+	unsigned int sw_code, keycode;
+	int error, i, j;
+	u8 dir_mask, state;
+
+	iqs269->keypad = devm_input_allocate_device(&client->dev);
+	if (!iqs269->keypad)
+		return -ENOMEM;
+
+	iqs269->keypad->keycodemax = ARRAY_SIZE(iqs269->keycode);
+	iqs269->keypad->keycode = iqs269->keycode;
+	iqs269->keypad->keycodesize = sizeof(*iqs269->keycode);
+
+	iqs269->keypad->name = "iqs269a_keypad";
+	iqs269->keypad->id.bustype = BUS_I2C;
+
+	if (iqs269->hall_enable) {
+		error = regmap_raw_read(iqs269->regmap, IQS269_SYS_FLAGS,
+					&flags, sizeof(flags));
+		if (error) {
+			dev_err(&client->dev,
+				"Failed to read initial status: %d\n", error);
+			return error;
+		}
+	}
+
+	for (i = 0; i < ARRAY_SIZE(iqs269_events); i++) {
+		dir_mask = flags.states[IQS269_ST_OFFS_DIR];
+		if (!iqs269_events[i].dir_up)
+			dir_mask = ~dir_mask;
+
+		state = flags.states[iqs269_events[i].st_offs] & dir_mask;
+
+		sw_code = iqs269->switches[i].code;
+
+		for (j = 0; j < IQS269_NUM_CH; j++) {
+			keycode = iqs269->keycode[i * IQS269_NUM_CH + j];
+
+			/*
+			 * Hall-effect sensing repurposes a pair of dedicated
+			 * channels, only one of which reports events.
+			 */
+			switch (j) {
+			case IQS269_CHx_HALL_ACTIVE:
+				if (iqs269->hall_enable &&
+				    iqs269->switches[i].enabled) {
+					input_set_capability(iqs269->keypad,
+							     EV_SW, sw_code);
+					input_report_switch(iqs269->keypad,
+							    sw_code,
+							    state & BIT(j));
+				}
+				fallthrough;
+
+			case IQS269_CHx_HALL_INACTIVE:
+				if (iqs269->hall_enable)
+					continue;
+				fallthrough;
+
+			default:
+				if (keycode != KEY_RESERVED)
+					input_set_capability(iqs269->keypad,
+							     EV_KEY, keycode);
+			}
+		}
+	}
+
+	input_sync(iqs269->keypad);
+
+	error = input_register_device(iqs269->keypad);
+	if (error) {
+		dev_err(&client->dev, "Failed to register keypad: %d\n", error);
+		return error;
+	}
+
+	for (i = 0; i < IQS269_NUM_SL; i++) {
+		if (!iqs269->sys_reg.slider_select[i])
+			continue;
+
+		iqs269->slider[i] = devm_input_allocate_device(&client->dev);
+		if (!iqs269->slider[i])
+			return -ENOMEM;
+
+		iqs269->slider[i]->name = i ? "iqs269a_slider_1"
+					    : "iqs269a_slider_0";
+		iqs269->slider[i]->id.bustype = BUS_I2C;
+
+		input_set_capability(iqs269->slider[i], EV_KEY, BTN_TOUCH);
+		input_set_abs_params(iqs269->slider[i], ABS_X, 0, 255, 0, 0);
+
+		error = input_register_device(iqs269->slider[i]);
+		if (error) {
+			dev_err(&client->dev,
+				"Failed to register slider %d: %d\n", i, error);
+			return error;
+		}
+	}
+
+	return 0;
+}
+
+static int iqs269_report(struct iqs269_private *iqs269)
+{
+	struct i2c_client *client = iqs269->client;
+	struct iqs269_flags flags;
+	unsigned int sw_code, keycode;
+	int error, i, j;
+	u8 slider_x[IQS269_NUM_SL];
+	u8 dir_mask, state;
+
+	error = regmap_raw_read(iqs269->regmap, IQS269_SYS_FLAGS, &flags,
+				sizeof(flags));
+	if (error) {
+		dev_err(&client->dev, "Failed to read device status: %d\n",
+			error);
+		return error;
+	}
+
+	/*
+	 * The device resets itself if its own watchdog bites, which can happen
+	 * in the event of an I2C communication error. In this case, the device
+	 * asserts a SHOW_RESET interrupt and all registers must be restored.
+	 */
+	if (be16_to_cpu(flags.system) & IQS269_SYS_FLAGS_SHOW_RESET) {
+		dev_err(&client->dev, "Unexpected device reset\n");
+
+		error = iqs269_dev_init(iqs269);
+		if (error)
+			dev_err(&client->dev,
+				"Failed to re-initialize device: %d\n", error);
+
+		return error;
+	}
+
+	error = regmap_raw_read(iqs269->regmap, IQS269_SLIDER_X, slider_x,
+				sizeof(slider_x));
+	if (error) {
+		dev_err(&client->dev, "Failed to read slider position: %d\n",
+			error);
+		return error;
+	}
+
+	for (i = 0; i < IQS269_NUM_SL; i++) {
+		if (!iqs269->sys_reg.slider_select[i])
+			continue;
+
+		/*
+		 * Report BTN_TOUCH if any channel that participates in the
+		 * slider is in a state of touch.
+		 */
+		if (flags.states[IQS269_ST_OFFS_TOUCH] &
+		    iqs269->sys_reg.slider_select[i]) {
+			input_report_key(iqs269->slider[i], BTN_TOUCH, 1);
+			input_report_abs(iqs269->slider[i], ABS_X, slider_x[i]);
+		} else {
+			input_report_key(iqs269->slider[i], BTN_TOUCH, 0);
+		}
+
+		input_sync(iqs269->slider[i]);
+	}
+
+	for (i = 0; i < ARRAY_SIZE(iqs269_events); i++) {
+		dir_mask = flags.states[IQS269_ST_OFFS_DIR];
+		if (!iqs269_events[i].dir_up)
+			dir_mask = ~dir_mask;
+
+		state = flags.states[iqs269_events[i].st_offs] & dir_mask;
+
+		sw_code = iqs269->switches[i].code;
+
+		for (j = 0; j < IQS269_NUM_CH; j++) {
+			keycode = iqs269->keycode[i * IQS269_NUM_CH + j];
+
+			switch (j) {
+			case IQS269_CHx_HALL_ACTIVE:
+				if (iqs269->hall_enable &&
+				    iqs269->switches[i].enabled)
+					input_report_switch(iqs269->keypad,
+							    sw_code,
+							    state & BIT(j));
+				fallthrough;
+
+			case IQS269_CHx_HALL_INACTIVE:
+				if (iqs269->hall_enable)
+					continue;
+				fallthrough;
+
+			default:
+				input_report_key(iqs269->keypad, keycode,
+						 state & BIT(j));
+			}
+		}
+	}
+
+	input_sync(iqs269->keypad);
+
+	return 0;
+}
+
+static irqreturn_t iqs269_irq(int irq, void *context)
+{
+	struct iqs269_private *iqs269 = context;
+
+	if (iqs269_report(iqs269))
+		return IRQ_NONE;
+
+	/*
+	 * The device does not deassert its interrupt (RDY) pin until shortly
+	 * after receiving an I2C stop condition; the following delay ensures
+	 * the interrupt handler does not return before this time.
+	 */
+	iqs269_irq_wait();
+
+	return IRQ_HANDLED;
+}
+
+static ssize_t counts_show(struct device *dev,
+			   struct device_attribute *attr, char *buf)
+{
+	struct iqs269_private *iqs269 = dev_get_drvdata(dev);
+	struct i2c_client *client = iqs269->client;
+	__le16 counts;
+	int error;
+
+	if (!iqs269->ati_current || iqs269->hall_enable)
+		return -EPERM;
+
+	/*
+	 * Unsolicited I2C communication prompts the device to assert its RDY
+	 * pin, so disable the interrupt line until the operation is finished
+	 * and RDY has been deasserted.
+	 */
+	disable_irq(client->irq);
+
+	error = regmap_raw_read(iqs269->regmap,
+				IQS269_CHx_COUNTS + iqs269->ch_num * 2,
+				&counts, sizeof(counts));
+
+	iqs269_irq_wait();
+	enable_irq(client->irq);
+
+	if (error)
+		return error;
+
+	return scnprintf(buf, PAGE_SIZE, "%u\n", le16_to_cpu(counts));
+}
+
+static ssize_t hall_bin_show(struct device *dev,
+			     struct device_attribute *attr, char *buf)
+{
+	struct iqs269_private *iqs269 = dev_get_drvdata(dev);
+	struct i2c_client *client = iqs269->client;
+	unsigned int val;
+	int error;
+
+	disable_irq(client->irq);
+
+	error = regmap_read(iqs269->regmap, IQS269_CAL_DATA_A, &val);
+
+	iqs269_irq_wait();
+	enable_irq(client->irq);
+
+	if (error)
+		return error;
+
+	switch (iqs269->ch_reg[IQS269_CHx_HALL_ACTIVE].rx_enable &
+		iqs269->ch_reg[IQS269_CHx_HALL_INACTIVE].rx_enable) {
+	case IQS269_HALL_PAD_R:
+		val &= IQS269_CAL_DATA_A_HALL_BIN_R_MASK;
+		val >>= IQS269_CAL_DATA_A_HALL_BIN_R_SHIFT;
+		break;
+
+	case IQS269_HALL_PAD_L:
+		val &= IQS269_CAL_DATA_A_HALL_BIN_L_MASK;
+		val >>= IQS269_CAL_DATA_A_HALL_BIN_L_SHIFT;
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	return scnprintf(buf, PAGE_SIZE, "%u\n", val);
+}
+
+static ssize_t hall_enable_show(struct device *dev,
+				struct device_attribute *attr, char *buf)
+{
+	struct iqs269_private *iqs269 = dev_get_drvdata(dev);
+
+	return scnprintf(buf, PAGE_SIZE, "%u\n", iqs269->hall_enable);
+}
+
+static ssize_t hall_enable_store(struct device *dev,
+				 struct device_attribute *attr, const char *buf,
+				 size_t count)
+{
+	struct iqs269_private *iqs269 = dev_get_drvdata(dev);
+	unsigned int val;
+	int error;
+
+	error = kstrtouint(buf, 10, &val);
+	if (error)
+		return error;
+
+	mutex_lock(&iqs269->lock);
+
+	iqs269->hall_enable = val;
+	iqs269->ati_current = false;
+
+	mutex_unlock(&iqs269->lock);
+
+	return count;
+}
+
+static ssize_t ch_number_show(struct device *dev,
+			      struct device_attribute *attr, char *buf)
+{
+	struct iqs269_private *iqs269 = dev_get_drvdata(dev);
+
+	return scnprintf(buf, PAGE_SIZE, "%u\n", iqs269->ch_num);
+}
+
+static ssize_t ch_number_store(struct device *dev,
+			       struct device_attribute *attr, const char *buf,
+			       size_t count)
+{
+	struct iqs269_private *iqs269 = dev_get_drvdata(dev);
+	unsigned int val;
+	int error;
+
+	error = kstrtouint(buf, 10, &val);
+	if (error)
+		return error;
+
+	if (val >= IQS269_NUM_CH)
+		return -EINVAL;
+
+	iqs269->ch_num = val;
+
+	return count;
+}
+
+static ssize_t rx_enable_show(struct device *dev,
+			      struct device_attribute *attr, char *buf)
+{
+	struct iqs269_private *iqs269 = dev_get_drvdata(dev);
+
+	return scnprintf(buf, PAGE_SIZE, "%u\n",
+			 iqs269->ch_reg[iqs269->ch_num].rx_enable);
+}
+
+static ssize_t rx_enable_store(struct device *dev,
+			       struct device_attribute *attr, const char *buf,
+			       size_t count)
+{
+	struct iqs269_private *iqs269 = dev_get_drvdata(dev);
+	unsigned int val;
+	int error;
+
+	error = kstrtouint(buf, 10, &val);
+	if (error)
+		return error;
+
+	if (val > 0xFF)
+		return -EINVAL;
+
+	mutex_lock(&iqs269->lock);
+
+	iqs269->ch_reg[iqs269->ch_num].rx_enable = val;
+	iqs269->ati_current = false;
+
+	mutex_unlock(&iqs269->lock);
+
+	return count;
+}
+
+static ssize_t ati_mode_show(struct device *dev,
+			     struct device_attribute *attr, char *buf)
+{
+	struct iqs269_private *iqs269 = dev_get_drvdata(dev);
+	unsigned int val;
+	int error;
+
+	error = iqs269_ati_mode_get(iqs269, iqs269->ch_num, &val);
+	if (error)
+		return error;
+
+	return scnprintf(buf, PAGE_SIZE, "%u\n", val);
+}
+
+static ssize_t ati_mode_store(struct device *dev,
+			      struct device_attribute *attr, const char *buf,
+			      size_t count)
+{
+	struct iqs269_private *iqs269 = dev_get_drvdata(dev);
+	unsigned int val;
+	int error;
+
+	error = kstrtouint(buf, 10, &val);
+	if (error)
+		return error;
+
+	error = iqs269_ati_mode_set(iqs269, iqs269->ch_num, val);
+	if (error)
+		return error;
+
+	return count;
+}
+
+static ssize_t ati_base_show(struct device *dev,
+			     struct device_attribute *attr, char *buf)
+{
+	struct iqs269_private *iqs269 = dev_get_drvdata(dev);
+	unsigned int val;
+	int error;
+
+	error = iqs269_ati_base_get(iqs269, iqs269->ch_num, &val);
+	if (error)
+		return error;
+
+	return scnprintf(buf, PAGE_SIZE, "%u\n", val);
+}
+
+static ssize_t ati_base_store(struct device *dev,
+			      struct device_attribute *attr, const char *buf,
+			      size_t count)
+{
+	struct iqs269_private *iqs269 = dev_get_drvdata(dev);
+	unsigned int val;
+	int error;
+
+	error = kstrtouint(buf, 10, &val);
+	if (error)
+		return error;
+
+	error = iqs269_ati_base_set(iqs269, iqs269->ch_num, val);
+	if (error)
+		return error;
+
+	return count;
+}
+
+static ssize_t ati_target_show(struct device *dev,
+			       struct device_attribute *attr, char *buf)
+{
+	struct iqs269_private *iqs269 = dev_get_drvdata(dev);
+	unsigned int val;
+	int error;
+
+	error = iqs269_ati_target_get(iqs269, iqs269->ch_num, &val);
+	if (error)
+		return error;
+
+	return scnprintf(buf, PAGE_SIZE, "%u\n", val);
+}
+
+static ssize_t ati_target_store(struct device *dev,
+				struct device_attribute *attr, const char *buf,
+				size_t count)
+{
+	struct iqs269_private *iqs269 = dev_get_drvdata(dev);
+	unsigned int val;
+	int error;
+
+	error = kstrtouint(buf, 10, &val);
+	if (error)
+		return error;
+
+	error = iqs269_ati_target_set(iqs269, iqs269->ch_num, val);
+	if (error)
+		return error;
+
+	return count;
+}
+
+static ssize_t ati_trigger_show(struct device *dev,
+				struct device_attribute *attr, char *buf)
+{
+	struct iqs269_private *iqs269 = dev_get_drvdata(dev);
+
+	return scnprintf(buf, PAGE_SIZE, "%u\n", iqs269->ati_current);
+}
+
+static ssize_t ati_trigger_store(struct device *dev,
+				 struct device_attribute *attr, const char *buf,
+				 size_t count)
+{
+	struct iqs269_private *iqs269 = dev_get_drvdata(dev);
+	struct i2c_client *client = iqs269->client;
+	unsigned int val;
+	int error;
+
+	error = kstrtouint(buf, 10, &val);
+	if (error)
+		return error;
+
+	if (!val)
+		return count;
+
+	disable_irq(client->irq);
+
+	error = iqs269_dev_init(iqs269);
+
+	iqs269_irq_wait();
+	enable_irq(client->irq);
+
+	if (error)
+		return error;
+
+	return count;
+}
+
+static DEVICE_ATTR_RO(counts);
+static DEVICE_ATTR_RO(hall_bin);
+static DEVICE_ATTR_RW(hall_enable);
+static DEVICE_ATTR_RW(ch_number);
+static DEVICE_ATTR_RW(rx_enable);
+static DEVICE_ATTR_RW(ati_mode);
+static DEVICE_ATTR_RW(ati_base);
+static DEVICE_ATTR_RW(ati_target);
+static DEVICE_ATTR_RW(ati_trigger);
+
+static struct attribute *iqs269_attrs[] = {
+	&dev_attr_counts.attr,
+	&dev_attr_hall_bin.attr,
+	&dev_attr_hall_enable.attr,
+	&dev_attr_ch_number.attr,
+	&dev_attr_rx_enable.attr,
+	&dev_attr_ati_mode.attr,
+	&dev_attr_ati_base.attr,
+	&dev_attr_ati_target.attr,
+	&dev_attr_ati_trigger.attr,
+	NULL,
+};
+
+static const struct attribute_group iqs269_attr_group = {
+	.attrs = iqs269_attrs,
+};
+
+static const struct regmap_config iqs269_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 16,
+	.max_register = IQS269_MAX_REG,
+};
+
+static int iqs269_probe(struct i2c_client *client)
+{
+	struct iqs269_ver_info ver_info;
+	struct iqs269_private *iqs269;
+	int error;
+
+	iqs269 = devm_kzalloc(&client->dev, sizeof(*iqs269), GFP_KERNEL);
+	if (!iqs269)
+		return -ENOMEM;
+
+	i2c_set_clientdata(client, iqs269);
+	iqs269->client = client;
+
+	iqs269->regmap = devm_regmap_init_i2c(client, &iqs269_regmap_config);
+	if (IS_ERR(iqs269->regmap)) {
+		error = PTR_ERR(iqs269->regmap);
+		dev_err(&client->dev, "Failed to initialize register map: %d\n",
+			error);
+		return error;
+	}
+
+	mutex_init(&iqs269->lock);
+
+	error = regmap_raw_read(iqs269->regmap, IQS269_VER_INFO, &ver_info,
+				sizeof(ver_info));
+	if (error)
+		return error;
+
+	if (ver_info.prod_num != IQS269_VER_INFO_PROD_NUM) {
+		dev_err(&client->dev, "Unrecognized product number: 0x%02X\n",
+			ver_info.prod_num);
+		return -EINVAL;
+	}
+
+	error = iqs269_parse_prop(iqs269);
+	if (error)
+		return error;
+
+	error = iqs269_dev_init(iqs269);
+	if (error) {
+		dev_err(&client->dev, "Failed to initialize device: %d\n",
+			error);
+		return error;
+	}
+
+	error = iqs269_input_init(iqs269);
+	if (error)
+		return error;
+
+	error = devm_request_threaded_irq(&client->dev, client->irq,
+					  NULL, iqs269_irq, IRQF_ONESHOT,
+					  client->name, iqs269);
+	if (error) {
+		dev_err(&client->dev, "Failed to request IRQ: %d\n", error);
+		return error;
+	}
+
+	error = devm_device_add_group(&client->dev, &iqs269_attr_group);
+	if (error)
+		dev_err(&client->dev, "Failed to add attributes: %d\n", error);
+
+	return error;
+}
+
+static int __maybe_unused iqs269_suspend(struct device *dev)
+{
+	struct iqs269_private *iqs269 = dev_get_drvdata(dev);
+	struct i2c_client *client = iqs269->client;
+	unsigned int val;
+	int error;
+
+	if (!iqs269->suspend_mode)
+		return 0;
+
+	disable_irq(client->irq);
+
+	/*
+	 * Automatic power mode switching must be disabled before the device is
+	 * forced into any particular power mode. In this case, the device will
+	 * transition into normal-power mode.
+	 */
+	error = regmap_update_bits(iqs269->regmap, IQS269_SYS_SETTINGS,
+				   IQS269_SYS_SETTINGS_DIS_AUTO, ~0);
+	if (error)
+		goto err_irq;
+
+	/*
+	 * The following check ensures the device has completed its transition
+	 * into normal-power mode before a manual mode switch is performed.
+	 */
+	error = regmap_read_poll_timeout(iqs269->regmap, IQS269_SYS_FLAGS, val,
+					!(val & IQS269_SYS_FLAGS_PWR_MODE_MASK),
+					 IQS269_PWR_MODE_POLL_SLEEP_US,
+					 IQS269_PWR_MODE_POLL_TIMEOUT_US);
+	if (error)
+		goto err_irq;
+
+	error = regmap_update_bits(iqs269->regmap, IQS269_SYS_SETTINGS,
+				   IQS269_SYS_SETTINGS_PWR_MODE_MASK,
+				   iqs269->suspend_mode <<
+				   IQS269_SYS_SETTINGS_PWR_MODE_SHIFT);
+	if (error)
+		goto err_irq;
+
+	/*
+	 * This last check ensures the device has completed its transition into
+	 * the desired power mode to prevent any spurious interrupts from being
+	 * triggered after iqs269_suspend has already returned.
+	 */
+	error = regmap_read_poll_timeout(iqs269->regmap, IQS269_SYS_FLAGS, val,
+					 (val & IQS269_SYS_FLAGS_PWR_MODE_MASK)
+					 == (iqs269->suspend_mode <<
+					     IQS269_SYS_FLAGS_PWR_MODE_SHIFT),
+					 IQS269_PWR_MODE_POLL_SLEEP_US,
+					 IQS269_PWR_MODE_POLL_TIMEOUT_US);
+
+err_irq:
+	iqs269_irq_wait();
+	enable_irq(client->irq);
+
+	return error;
+}
+
+static int __maybe_unused iqs269_resume(struct device *dev)
+{
+	struct iqs269_private *iqs269 = dev_get_drvdata(dev);
+	struct i2c_client *client = iqs269->client;
+	unsigned int val;
+	int error;
+
+	if (!iqs269->suspend_mode)
+		return 0;
+
+	disable_irq(client->irq);
+
+	error = regmap_update_bits(iqs269->regmap, IQS269_SYS_SETTINGS,
+				   IQS269_SYS_SETTINGS_PWR_MODE_MASK, 0);
+	if (error)
+		goto err_irq;
+
+	/*
+	 * This check ensures the device has returned to normal-power mode
+	 * before automatic power mode switching is re-enabled.
+	 */
+	error = regmap_read_poll_timeout(iqs269->regmap, IQS269_SYS_FLAGS, val,
+					!(val & IQS269_SYS_FLAGS_PWR_MODE_MASK),
+					 IQS269_PWR_MODE_POLL_SLEEP_US,
+					 IQS269_PWR_MODE_POLL_TIMEOUT_US);
+	if (error)
+		goto err_irq;
+
+	error = regmap_update_bits(iqs269->regmap, IQS269_SYS_SETTINGS,
+				   IQS269_SYS_SETTINGS_DIS_AUTO, 0);
+	if (error)
+		goto err_irq;
+
+	/*
+	 * This step reports any events that may have been "swallowed" as a
+	 * result of polling PWR_MODE (which automatically acknowledges any
+	 * pending interrupts).
+	 */
+	error = iqs269_report(iqs269);
+
+err_irq:
+	iqs269_irq_wait();
+	enable_irq(client->irq);
+
+	return error;
+}
+
+static SIMPLE_DEV_PM_OPS(iqs269_pm, iqs269_suspend, iqs269_resume);
+
+static const struct of_device_id iqs269_of_match[] = {
+	{ .compatible = "azoteq,iqs269a" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, iqs269_of_match);
+
+static struct i2c_driver iqs269_i2c_driver = {
+	.driver = {
+		.name = "iqs269a",
+		.of_match_table = iqs269_of_match,
+		.pm = &iqs269_pm,
+	},
+	.probe_new = iqs269_probe,
+};
+module_i2c_driver(iqs269_i2c_driver);
+
+MODULE_AUTHOR("Jeff LaBundy <jeff@labundy.com>");
+MODULE_DESCRIPTION("Azoteq IQS269A Capacitive Touch Controller");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/misc/iqs626a.c b/drivers/input/misc/iqs626a.c
new file mode 100644
index 000000000..23b5dd955
--- /dev/null
+++ b/drivers/input/misc/iqs626a.c
@@ -0,0 +1,1841 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Azoteq IQS626A Capacitive Touch Controller
+ *
+ * Copyright (C) 2020 Jeff LaBundy <jeff@labundy.com>
+ *
+ * This driver registers up to 2 input devices: one representing capacitive or
+ * inductive keys as well as Hall-effect switches, and one for a trackpad that
+ * can express various gestures.
+ */
+
+#include <linux/bits.h>
+#include <linux/completion.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/input.h>
+#include <linux/input/touchscreen.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/property.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+
+#define IQS626_VER_INFO				0x00
+#define IQS626_VER_INFO_PROD_NUM		0x51
+
+#define IQS626_SYS_FLAGS			0x02
+#define IQS626_SYS_FLAGS_SHOW_RESET		BIT(15)
+#define IQS626_SYS_FLAGS_IN_ATI			BIT(12)
+#define IQS626_SYS_FLAGS_PWR_MODE_MASK		GENMASK(9, 8)
+#define IQS626_SYS_FLAGS_PWR_MODE_SHIFT		8
+
+#define IQS626_HALL_OUTPUT			0x23
+
+#define IQS626_SYS_SETTINGS			0x80
+#define IQS626_SYS_SETTINGS_CLK_DIV		BIT(15)
+#define IQS626_SYS_SETTINGS_ULP_AUTO		BIT(14)
+#define IQS626_SYS_SETTINGS_DIS_AUTO		BIT(13)
+#define IQS626_SYS_SETTINGS_PWR_MODE_MASK	GENMASK(12, 11)
+#define IQS626_SYS_SETTINGS_PWR_MODE_SHIFT	11
+#define IQS626_SYS_SETTINGS_PWR_MODE_MAX	3
+#define IQS626_SYS_SETTINGS_ULP_UPDATE_MASK	GENMASK(10, 8)
+#define IQS626_SYS_SETTINGS_ULP_UPDATE_SHIFT	8
+#define IQS626_SYS_SETTINGS_ULP_UPDATE_MAX	7
+#define IQS626_SYS_SETTINGS_EVENT_MODE		BIT(5)
+#define IQS626_SYS_SETTINGS_EVENT_MODE_LP	BIT(4)
+#define IQS626_SYS_SETTINGS_REDO_ATI		BIT(2)
+#define IQS626_SYS_SETTINGS_ACK_RESET		BIT(0)
+
+#define IQS626_MISC_A_ATI_BAND_DISABLE		BIT(7)
+#define IQS626_MISC_A_TPx_LTA_UPDATE_MASK	GENMASK(6, 4)
+#define IQS626_MISC_A_TPx_LTA_UPDATE_SHIFT	4
+#define IQS626_MISC_A_TPx_LTA_UPDATE_MAX	7
+#define IQS626_MISC_A_ATI_LP_ONLY		BIT(3)
+#define IQS626_MISC_A_GPIO3_SELECT_MASK		GENMASK(2, 0)
+#define IQS626_MISC_A_GPIO3_SELECT_MAX		7
+
+#define IQS626_EVENT_MASK_SYS			BIT(6)
+#define IQS626_EVENT_MASK_GESTURE		BIT(3)
+#define IQS626_EVENT_MASK_DEEP			BIT(2)
+#define IQS626_EVENT_MASK_TOUCH			BIT(1)
+#define IQS626_EVENT_MASK_PROX			BIT(0)
+
+#define IQS626_RATE_NP_MS_MAX			255
+#define IQS626_RATE_LP_MS_MAX			255
+#define IQS626_RATE_ULP_MS_MAX			4080
+#define IQS626_TIMEOUT_PWR_MS_MAX		130560
+#define IQS626_TIMEOUT_LTA_MS_MAX		130560
+
+#define IQS626_MISC_B_RESEED_UI_SEL_MASK	GENMASK(7, 6)
+#define IQS626_MISC_B_RESEED_UI_SEL_SHIFT	6
+#define IQS626_MISC_B_RESEED_UI_SEL_MAX		3
+#define IQS626_MISC_B_THRESH_EXTEND		BIT(5)
+#define IQS626_MISC_B_TRACKING_UI_ENABLE	BIT(4)
+#define IQS626_MISC_B_TPx_SWIPE			BIT(3)
+#define IQS626_MISC_B_RESEED_OFFSET		BIT(2)
+#define IQS626_MISC_B_FILT_STR_TPx		GENMASK(1, 0)
+
+#define IQS626_THRESH_SWIPE_MAX			255
+#define IQS626_TIMEOUT_TAP_MS_MAX		4080
+#define IQS626_TIMEOUT_SWIPE_MS_MAX		4080
+
+#define IQS626_CHx_ENG_0_MEAS_CAP_SIZE		BIT(7)
+#define IQS626_CHx_ENG_0_RX_TERM_VSS		BIT(5)
+#define IQS626_CHx_ENG_0_LINEARIZE		BIT(4)
+#define IQS626_CHx_ENG_0_DUAL_DIR		BIT(3)
+#define IQS626_CHx_ENG_0_FILT_DISABLE		BIT(2)
+#define IQS626_CHx_ENG_0_ATI_MODE_MASK		GENMASK(1, 0)
+#define IQS626_CHx_ENG_0_ATI_MODE_MAX		3
+
+#define IQS626_CHx_ENG_1_CCT_HIGH_1		BIT(7)
+#define IQS626_CHx_ENG_1_CCT_HIGH_0		BIT(6)
+#define IQS626_CHx_ENG_1_PROJ_BIAS_MASK		GENMASK(5, 4)
+#define IQS626_CHx_ENG_1_PROJ_BIAS_SHIFT	4
+#define IQS626_CHx_ENG_1_PROJ_BIAS_MAX		3
+#define IQS626_CHx_ENG_1_CCT_ENABLE		BIT(3)
+#define IQS626_CHx_ENG_1_SENSE_FREQ_MASK	GENMASK(2, 1)
+#define IQS626_CHx_ENG_1_SENSE_FREQ_SHIFT	1
+#define IQS626_CHx_ENG_1_SENSE_FREQ_MAX		3
+#define IQS626_CHx_ENG_1_ATI_BAND_TIGHTEN	BIT(0)
+
+#define IQS626_CHx_ENG_2_LOCAL_CAP_MASK		GENMASK(7, 6)
+#define IQS626_CHx_ENG_2_LOCAL_CAP_SHIFT	6
+#define IQS626_CHx_ENG_2_LOCAL_CAP_MAX		3
+#define IQS626_CHx_ENG_2_LOCAL_CAP_ENABLE	BIT(5)
+#define IQS626_CHx_ENG_2_SENSE_MODE_MASK	GENMASK(3, 0)
+#define IQS626_CHx_ENG_2_SENSE_MODE_MAX		15
+
+#define IQS626_CHx_ENG_3_TX_FREQ_MASK		GENMASK(5, 4)
+#define IQS626_CHx_ENG_3_TX_FREQ_SHIFT		4
+#define IQS626_CHx_ENG_3_TX_FREQ_MAX		3
+#define IQS626_CHx_ENG_3_INV_LOGIC		BIT(0)
+
+#define IQS626_CHx_ENG_4_RX_TERM_VREG		BIT(6)
+#define IQS626_CHx_ENG_4_CCT_LOW_1		BIT(5)
+#define IQS626_CHx_ENG_4_CCT_LOW_0		BIT(4)
+#define IQS626_CHx_ENG_4_COMP_DISABLE		BIT(1)
+#define IQS626_CHx_ENG_4_STATIC_ENABLE		BIT(0)
+
+#define IQS626_TPx_ATI_BASE_MIN			45
+#define IQS626_TPx_ATI_BASE_MAX			300
+#define IQS626_CHx_ATI_BASE_MASK		GENMASK(7, 6)
+#define IQS626_CHx_ATI_BASE_75			0x00
+#define IQS626_CHx_ATI_BASE_100			0x40
+#define IQS626_CHx_ATI_BASE_150			0x80
+#define IQS626_CHx_ATI_BASE_200			0xC0
+#define IQS626_CHx_ATI_TARGET_MASK		GENMASK(5, 0)
+#define IQS626_CHx_ATI_TARGET_MAX		2016
+
+#define IQS626_CHx_THRESH_MAX			255
+#define IQS626_CHx_HYST_DEEP_MASK		GENMASK(7, 4)
+#define IQS626_CHx_HYST_DEEP_SHIFT		4
+#define IQS626_CHx_HYST_TOUCH_MASK		GENMASK(3, 0)
+#define IQS626_CHx_HYST_MAX			15
+
+#define IQS626_FILT_STR_NP_TPx_MASK		GENMASK(7, 6)
+#define IQS626_FILT_STR_NP_TPx_SHIFT		6
+#define IQS626_FILT_STR_LP_TPx_MASK		GENMASK(5, 4)
+#define IQS626_FILT_STR_LP_TPx_SHIFT		4
+
+#define IQS626_FILT_STR_NP_CNT_MASK		GENMASK(7, 6)
+#define IQS626_FILT_STR_NP_CNT_SHIFT		6
+#define IQS626_FILT_STR_LP_CNT_MASK		GENMASK(5, 4)
+#define IQS626_FILT_STR_LP_CNT_SHIFT		4
+#define IQS626_FILT_STR_NP_LTA_MASK		GENMASK(3, 2)
+#define IQS626_FILT_STR_NP_LTA_SHIFT		2
+#define IQS626_FILT_STR_LP_LTA_MASK		GENMASK(1, 0)
+#define IQS626_FILT_STR_MAX			3
+
+#define IQS626_ULP_PROJ_ENABLE			BIT(4)
+#define IQS626_GEN_WEIGHT_MAX			255
+
+#define IQS626_MAX_REG				0xFF
+
+#define IQS626_NUM_CH_TP_3			9
+#define IQS626_NUM_CH_TP_2			6
+#define IQS626_NUM_CH_GEN			3
+#define IQS626_NUM_CRx_TX			8
+
+#define IQS626_PWR_MODE_POLL_SLEEP_US		50000
+#define IQS626_PWR_MODE_POLL_TIMEOUT_US		500000
+
+#define iqs626_irq_wait()			usleep_range(350, 400)
+
+enum iqs626_ch_id {
+	IQS626_CH_ULP_0,
+	IQS626_CH_TP_2,
+	IQS626_CH_TP_3,
+	IQS626_CH_GEN_0,
+	IQS626_CH_GEN_1,
+	IQS626_CH_GEN_2,
+	IQS626_CH_HALL,
+};
+
+enum iqs626_rx_inactive {
+	IQS626_RX_INACTIVE_VSS,
+	IQS626_RX_INACTIVE_FLOAT,
+	IQS626_RX_INACTIVE_VREG,
+};
+
+enum iqs626_st_offs {
+	IQS626_ST_OFFS_PROX,
+	IQS626_ST_OFFS_DIR,
+	IQS626_ST_OFFS_TOUCH,
+	IQS626_ST_OFFS_DEEP,
+};
+
+enum iqs626_th_offs {
+	IQS626_TH_OFFS_PROX,
+	IQS626_TH_OFFS_TOUCH,
+	IQS626_TH_OFFS_DEEP,
+};
+
+enum iqs626_event_id {
+	IQS626_EVENT_PROX_DN,
+	IQS626_EVENT_PROX_UP,
+	IQS626_EVENT_TOUCH_DN,
+	IQS626_EVENT_TOUCH_UP,
+	IQS626_EVENT_DEEP_DN,
+	IQS626_EVENT_DEEP_UP,
+};
+
+enum iqs626_gesture_id {
+	IQS626_GESTURE_FLICK_X_POS,
+	IQS626_GESTURE_FLICK_X_NEG,
+	IQS626_GESTURE_FLICK_Y_POS,
+	IQS626_GESTURE_FLICK_Y_NEG,
+	IQS626_GESTURE_TAP,
+	IQS626_GESTURE_HOLD,
+	IQS626_NUM_GESTURES,
+};
+
+struct iqs626_event_desc {
+	const char *name;
+	enum iqs626_st_offs st_offs;
+	enum iqs626_th_offs th_offs;
+	bool dir_up;
+	u8 mask;
+};
+
+static const struct iqs626_event_desc iqs626_events[] = {
+	[IQS626_EVENT_PROX_DN] = {
+		.name = "event-prox",
+		.st_offs = IQS626_ST_OFFS_PROX,
+		.th_offs = IQS626_TH_OFFS_PROX,
+		.mask = IQS626_EVENT_MASK_PROX,
+	},
+	[IQS626_EVENT_PROX_UP] = {
+		.name = "event-prox-alt",
+		.st_offs = IQS626_ST_OFFS_PROX,
+		.th_offs = IQS626_TH_OFFS_PROX,
+		.dir_up = true,
+		.mask = IQS626_EVENT_MASK_PROX,
+	},
+	[IQS626_EVENT_TOUCH_DN] = {
+		.name = "event-touch",
+		.st_offs = IQS626_ST_OFFS_TOUCH,
+		.th_offs = IQS626_TH_OFFS_TOUCH,
+		.mask = IQS626_EVENT_MASK_TOUCH,
+	},
+	[IQS626_EVENT_TOUCH_UP] = {
+		.name = "event-touch-alt",
+		.st_offs = IQS626_ST_OFFS_TOUCH,
+		.th_offs = IQS626_TH_OFFS_TOUCH,
+		.dir_up = true,
+		.mask = IQS626_EVENT_MASK_TOUCH,
+	},
+	[IQS626_EVENT_DEEP_DN] = {
+		.name = "event-deep",
+		.st_offs = IQS626_ST_OFFS_DEEP,
+		.th_offs = IQS626_TH_OFFS_DEEP,
+		.mask = IQS626_EVENT_MASK_DEEP,
+	},
+	[IQS626_EVENT_DEEP_UP] = {
+		.name = "event-deep-alt",
+		.st_offs = IQS626_ST_OFFS_DEEP,
+		.th_offs = IQS626_TH_OFFS_DEEP,
+		.dir_up = true,
+		.mask = IQS626_EVENT_MASK_DEEP,
+	},
+};
+
+struct iqs626_ver_info {
+	u8 prod_num;
+	u8 sw_num;
+	u8 hw_num;
+	u8 padding;
+} __packed;
+
+struct iqs626_flags {
+	__be16 system;
+	u8 gesture;
+	u8 padding_a;
+	u8 states[4];
+	u8 ref_active;
+	u8 padding_b;
+	u8 comp_min;
+	u8 comp_max;
+	u8 trackpad_x;
+	u8 trackpad_y;
+} __packed;
+
+struct iqs626_ch_reg_ulp {
+	u8 thresh[2];
+	u8 hyst;
+	u8 filter;
+	u8 engine[2];
+	u8 ati_target;
+	u8 padding;
+	__be16 ati_comp;
+	u8 rx_enable;
+	u8 tx_enable;
+} __packed;
+
+struct iqs626_ch_reg_tp {
+	u8 thresh;
+	u8 ati_base;
+	__be16 ati_comp;
+} __packed;
+
+struct iqs626_tp_grp_reg {
+	u8 hyst;
+	u8 ati_target;
+	u8 engine[2];
+	struct iqs626_ch_reg_tp ch_reg_tp[IQS626_NUM_CH_TP_3];
+} __packed;
+
+struct iqs626_ch_reg_gen {
+	u8 thresh[3];
+	u8 padding;
+	u8 hyst;
+	u8 ati_target;
+	__be16 ati_comp;
+	u8 engine[5];
+	u8 filter;
+	u8 rx_enable;
+	u8 tx_enable;
+	u8 assoc_select;
+	u8 assoc_weight;
+} __packed;
+
+struct iqs626_ch_reg_hall {
+	u8 engine;
+	u8 thresh;
+	u8 hyst;
+	u8 ati_target;
+	__be16 ati_comp;
+} __packed;
+
+struct iqs626_sys_reg {
+	__be16 general;
+	u8 misc_a;
+	u8 event_mask;
+	u8 active;
+	u8 reseed;
+	u8 rate_np;
+	u8 rate_lp;
+	u8 rate_ulp;
+	u8 timeout_pwr;
+	u8 timeout_rdy;
+	u8 timeout_lta;
+	u8 misc_b;
+	u8 thresh_swipe;
+	u8 timeout_tap;
+	u8 timeout_swipe;
+	u8 redo_ati;
+	u8 padding;
+	struct iqs626_ch_reg_ulp ch_reg_ulp;
+	struct iqs626_tp_grp_reg tp_grp_reg;
+	struct iqs626_ch_reg_gen ch_reg_gen[IQS626_NUM_CH_GEN];
+	struct iqs626_ch_reg_hall ch_reg_hall;
+} __packed;
+
+struct iqs626_channel_desc {
+	const char *name;
+	int num_ch;
+	u8 active;
+	bool events[ARRAY_SIZE(iqs626_events)];
+};
+
+static const struct iqs626_channel_desc iqs626_channels[] = {
+	[IQS626_CH_ULP_0] = {
+		.name = "ulp-0",
+		.num_ch = 1,
+		.active = BIT(0),
+		.events = {
+			[IQS626_EVENT_PROX_DN] = true,
+			[IQS626_EVENT_PROX_UP] = true,
+			[IQS626_EVENT_TOUCH_DN] = true,
+			[IQS626_EVENT_TOUCH_UP] = true,
+		},
+	},
+	[IQS626_CH_TP_2] = {
+		.name = "trackpad-3x2",
+		.num_ch = IQS626_NUM_CH_TP_2,
+		.active = BIT(1),
+		.events = {
+			[IQS626_EVENT_TOUCH_DN] = true,
+		},
+	},
+	[IQS626_CH_TP_3] = {
+		.name = "trackpad-3x3",
+		.num_ch = IQS626_NUM_CH_TP_3,
+		.active = BIT(2) | BIT(1),
+		.events = {
+			[IQS626_EVENT_TOUCH_DN] = true,
+		},
+	},
+	[IQS626_CH_GEN_0] = {
+		.name = "generic-0",
+		.num_ch = 1,
+		.active = BIT(4),
+		.events = {
+			[IQS626_EVENT_PROX_DN] = true,
+			[IQS626_EVENT_PROX_UP] = true,
+			[IQS626_EVENT_TOUCH_DN] = true,
+			[IQS626_EVENT_TOUCH_UP] = true,
+			[IQS626_EVENT_DEEP_DN] = true,
+			[IQS626_EVENT_DEEP_UP] = true,
+		},
+	},
+	[IQS626_CH_GEN_1] = {
+		.name = "generic-1",
+		.num_ch = 1,
+		.active = BIT(5),
+		.events = {
+			[IQS626_EVENT_PROX_DN] = true,
+			[IQS626_EVENT_PROX_UP] = true,
+			[IQS626_EVENT_TOUCH_DN] = true,
+			[IQS626_EVENT_TOUCH_UP] = true,
+			[IQS626_EVENT_DEEP_DN] = true,
+			[IQS626_EVENT_DEEP_UP] = true,
+		},
+	},
+	[IQS626_CH_GEN_2] = {
+		.name = "generic-2",
+		.num_ch = 1,
+		.active = BIT(6),
+		.events = {
+			[IQS626_EVENT_PROX_DN] = true,
+			[IQS626_EVENT_PROX_UP] = true,
+			[IQS626_EVENT_TOUCH_DN] = true,
+			[IQS626_EVENT_TOUCH_UP] = true,
+			[IQS626_EVENT_DEEP_DN] = true,
+			[IQS626_EVENT_DEEP_UP] = true,
+		},
+	},
+	[IQS626_CH_HALL] = {
+		.name = "hall",
+		.num_ch = 1,
+		.active = BIT(7),
+		.events = {
+			[IQS626_EVENT_TOUCH_DN] = true,
+			[IQS626_EVENT_TOUCH_UP] = true,
+		},
+	},
+};
+
+struct iqs626_private {
+	struct i2c_client *client;
+	struct regmap *regmap;
+	struct iqs626_sys_reg sys_reg;
+	struct completion ati_done;
+	struct input_dev *keypad;
+	struct input_dev *trackpad;
+	struct touchscreen_properties prop;
+	unsigned int kp_type[ARRAY_SIZE(iqs626_channels)]
+			    [ARRAY_SIZE(iqs626_events)];
+	unsigned int kp_code[ARRAY_SIZE(iqs626_channels)]
+			    [ARRAY_SIZE(iqs626_events)];
+	unsigned int tp_code[IQS626_NUM_GESTURES];
+	unsigned int suspend_mode;
+};
+
+static noinline_for_stack int
+iqs626_parse_events(struct iqs626_private *iqs626,
+		    const struct fwnode_handle *ch_node,
+		    enum iqs626_ch_id ch_id)
+{
+	struct iqs626_sys_reg *sys_reg = &iqs626->sys_reg;
+	struct i2c_client *client = iqs626->client;
+	const struct fwnode_handle *ev_node;
+	const char *ev_name;
+	u8 *thresh, *hyst;
+	unsigned int thresh_tp[IQS626_NUM_CH_TP_3];
+	unsigned int val;
+	int num_ch = iqs626_channels[ch_id].num_ch;
+	int error, i, j;
+
+	switch (ch_id) {
+	case IQS626_CH_ULP_0:
+		thresh = sys_reg->ch_reg_ulp.thresh;
+		hyst = &sys_reg->ch_reg_ulp.hyst;
+		break;
+
+	case IQS626_CH_TP_2:
+	case IQS626_CH_TP_3:
+		thresh = &sys_reg->tp_grp_reg.ch_reg_tp[0].thresh;
+		hyst = &sys_reg->tp_grp_reg.hyst;
+		break;
+
+	case IQS626_CH_GEN_0:
+	case IQS626_CH_GEN_1:
+	case IQS626_CH_GEN_2:
+		i = ch_id - IQS626_CH_GEN_0;
+		thresh = sys_reg->ch_reg_gen[i].thresh;
+		hyst = &sys_reg->ch_reg_gen[i].hyst;
+		break;
+
+	case IQS626_CH_HALL:
+		thresh = &sys_reg->ch_reg_hall.thresh;
+		hyst = &sys_reg->ch_reg_hall.hyst;
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(iqs626_events); i++) {
+		if (!iqs626_channels[ch_id].events[i])
+			continue;
+
+		if (ch_id == IQS626_CH_TP_2 || ch_id == IQS626_CH_TP_3) {
+			/*
+			 * Trackpad touch events are simply described under the
+			 * trackpad child node.
+			 */
+			ev_node = ch_node;
+		} else {
+			ev_name = iqs626_events[i].name;
+			ev_node = fwnode_get_named_child_node(ch_node, ev_name);
+			if (!ev_node)
+				continue;
+
+			if (!fwnode_property_read_u32(ev_node, "linux,code",
+						      &val)) {
+				iqs626->kp_code[ch_id][i] = val;
+
+				if (fwnode_property_read_u32(ev_node,
+							     "linux,input-type",
+							     &val)) {
+					if (ch_id == IQS626_CH_HALL)
+						val = EV_SW;
+					else
+						val = EV_KEY;
+				}
+
+				if (val != EV_KEY && val != EV_SW) {
+					dev_err(&client->dev,
+						"Invalid input type: %u\n",
+						val);
+					return -EINVAL;
+				}
+
+				iqs626->kp_type[ch_id][i] = val;
+
+				sys_reg->event_mask &= ~iqs626_events[i].mask;
+			}
+		}
+
+		if (!fwnode_property_read_u32(ev_node, "azoteq,hyst", &val)) {
+			if (val > IQS626_CHx_HYST_MAX) {
+				dev_err(&client->dev,
+					"Invalid %s channel hysteresis: %u\n",
+					fwnode_get_name(ch_node), val);
+				return -EINVAL;
+			}
+
+			if (i == IQS626_EVENT_DEEP_DN ||
+			    i == IQS626_EVENT_DEEP_UP) {
+				*hyst &= ~IQS626_CHx_HYST_DEEP_MASK;
+				*hyst |= (val << IQS626_CHx_HYST_DEEP_SHIFT);
+			} else if (i == IQS626_EVENT_TOUCH_DN ||
+				   i == IQS626_EVENT_TOUCH_UP) {
+				*hyst &= ~IQS626_CHx_HYST_TOUCH_MASK;
+				*hyst |= val;
+			}
+		}
+
+		if (ch_id != IQS626_CH_TP_2 && ch_id != IQS626_CH_TP_3 &&
+		    !fwnode_property_read_u32(ev_node, "azoteq,thresh", &val)) {
+			if (val > IQS626_CHx_THRESH_MAX) {
+				dev_err(&client->dev,
+					"Invalid %s channel threshold: %u\n",
+					fwnode_get_name(ch_node), val);
+				return -EINVAL;
+			}
+
+			if (ch_id == IQS626_CH_HALL)
+				*thresh = val;
+			else
+				*(thresh + iqs626_events[i].th_offs) = val;
+
+			continue;
+		}
+
+		if (!fwnode_property_present(ev_node, "azoteq,thresh"))
+			continue;
+
+		error = fwnode_property_read_u32_array(ev_node, "azoteq,thresh",
+						       thresh_tp, num_ch);
+		if (error) {
+			dev_err(&client->dev,
+				"Failed to read %s channel thresholds: %d\n",
+				fwnode_get_name(ch_node), error);
+			return error;
+		}
+
+		for (j = 0; j < num_ch; j++) {
+			if (thresh_tp[j] > IQS626_CHx_THRESH_MAX) {
+				dev_err(&client->dev,
+					"Invalid %s channel threshold: %u\n",
+					fwnode_get_name(ch_node), thresh_tp[j]);
+				return -EINVAL;
+			}
+
+			sys_reg->tp_grp_reg.ch_reg_tp[j].thresh = thresh_tp[j];
+		}
+	}
+
+	return 0;
+}
+
+static noinline_for_stack int
+iqs626_parse_ati_target(struct iqs626_private *iqs626,
+			const struct fwnode_handle *ch_node,
+			enum iqs626_ch_id ch_id)
+{
+	struct iqs626_sys_reg *sys_reg = &iqs626->sys_reg;
+	struct i2c_client *client = iqs626->client;
+	unsigned int ati_base[IQS626_NUM_CH_TP_3];
+	unsigned int val;
+	u8 *ati_target;
+	int num_ch = iqs626_channels[ch_id].num_ch;
+	int error, i;
+
+	switch (ch_id) {
+	case IQS626_CH_ULP_0:
+		ati_target = &sys_reg->ch_reg_ulp.ati_target;
+		break;
+
+	case IQS626_CH_TP_2:
+	case IQS626_CH_TP_3:
+		ati_target = &sys_reg->tp_grp_reg.ati_target;
+		break;
+
+	case IQS626_CH_GEN_0:
+	case IQS626_CH_GEN_1:
+	case IQS626_CH_GEN_2:
+		i = ch_id - IQS626_CH_GEN_0;
+		ati_target = &sys_reg->ch_reg_gen[i].ati_target;
+		break;
+
+	case IQS626_CH_HALL:
+		ati_target = &sys_reg->ch_reg_hall.ati_target;
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	if (!fwnode_property_read_u32(ch_node, "azoteq,ati-target", &val)) {
+		if (val > IQS626_CHx_ATI_TARGET_MAX) {
+			dev_err(&client->dev,
+				"Invalid %s channel ATI target: %u\n",
+				fwnode_get_name(ch_node), val);
+			return -EINVAL;
+		}
+
+		*ati_target &= ~IQS626_CHx_ATI_TARGET_MASK;
+		*ati_target |= (val / 32);
+	}
+
+	if (ch_id != IQS626_CH_TP_2 && ch_id != IQS626_CH_TP_3 &&
+	    !fwnode_property_read_u32(ch_node, "azoteq,ati-base", &val)) {
+		switch (val) {
+		case 75:
+			val = IQS626_CHx_ATI_BASE_75;
+			break;
+
+		case 100:
+			val = IQS626_CHx_ATI_BASE_100;
+			break;
+
+		case 150:
+			val = IQS626_CHx_ATI_BASE_150;
+			break;
+
+		case 200:
+			val = IQS626_CHx_ATI_BASE_200;
+			break;
+
+		default:
+			dev_err(&client->dev,
+				"Invalid %s channel ATI base: %u\n",
+				fwnode_get_name(ch_node), val);
+			return -EINVAL;
+		}
+
+		*ati_target &= ~IQS626_CHx_ATI_BASE_MASK;
+		*ati_target |= val;
+
+		return 0;
+	}
+
+	if (!fwnode_property_present(ch_node, "azoteq,ati-base"))
+		return 0;
+
+	error = fwnode_property_read_u32_array(ch_node, "azoteq,ati-base",
+					       ati_base, num_ch);
+	if (error) {
+		dev_err(&client->dev,
+			"Failed to read %s channel ATI bases: %d\n",
+			fwnode_get_name(ch_node), error);
+		return error;
+	}
+
+	for (i = 0; i < num_ch; i++) {
+		if (ati_base[i] < IQS626_TPx_ATI_BASE_MIN ||
+		    ati_base[i] > IQS626_TPx_ATI_BASE_MAX) {
+			dev_err(&client->dev,
+				"Invalid %s channel ATI base: %u\n",
+				fwnode_get_name(ch_node), ati_base[i]);
+			return -EINVAL;
+		}
+
+		ati_base[i] -= IQS626_TPx_ATI_BASE_MIN;
+		sys_reg->tp_grp_reg.ch_reg_tp[i].ati_base = ati_base[i];
+	}
+
+	return 0;
+}
+
+static int iqs626_parse_pins(struct iqs626_private *iqs626,
+			     const struct fwnode_handle *ch_node,
+			     const char *propname, u8 *enable)
+{
+	struct i2c_client *client = iqs626->client;
+	unsigned int val[IQS626_NUM_CRx_TX];
+	int error, count, i;
+
+	if (!fwnode_property_present(ch_node, propname))
+		return 0;
+
+	count = fwnode_property_count_u32(ch_node, propname);
+	if (count > IQS626_NUM_CRx_TX) {
+		dev_err(&client->dev,
+			"Too many %s channel CRX/TX pins present\n",
+			fwnode_get_name(ch_node));
+		return -EINVAL;
+	} else if (count < 0) {
+		dev_err(&client->dev,
+			"Failed to count %s channel CRX/TX pins: %d\n",
+			fwnode_get_name(ch_node), count);
+		return count;
+	}
+
+	error = fwnode_property_read_u32_array(ch_node, propname, val, count);
+	if (error) {
+		dev_err(&client->dev,
+			"Failed to read %s channel CRX/TX pins: %d\n",
+			fwnode_get_name(ch_node), error);
+		return error;
+	}
+
+	*enable = 0;
+
+	for (i = 0; i < count; i++) {
+		if (val[i] >= IQS626_NUM_CRx_TX) {
+			dev_err(&client->dev,
+				"Invalid %s channel CRX/TX pin: %u\n",
+				fwnode_get_name(ch_node), val[i]);
+			return -EINVAL;
+		}
+
+		*enable |= BIT(val[i]);
+	}
+
+	return 0;
+}
+
+static int iqs626_parse_trackpad(struct iqs626_private *iqs626,
+				 const struct fwnode_handle *ch_node)
+{
+	struct iqs626_sys_reg *sys_reg = &iqs626->sys_reg;
+	struct i2c_client *client = iqs626->client;
+	u8 *hyst = &sys_reg->tp_grp_reg.hyst;
+	unsigned int val;
+	int error, count;
+
+	if (!fwnode_property_read_u32(ch_node, "azoteq,lta-update", &val)) {
+		if (val > IQS626_MISC_A_TPx_LTA_UPDATE_MAX) {
+			dev_err(&client->dev,
+				"Invalid %s channel update rate: %u\n",
+				fwnode_get_name(ch_node), val);
+			return -EINVAL;
+		}
+
+		sys_reg->misc_a &= ~IQS626_MISC_A_TPx_LTA_UPDATE_MASK;
+		sys_reg->misc_a |= (val << IQS626_MISC_A_TPx_LTA_UPDATE_SHIFT);
+	}
+
+	if (!fwnode_property_read_u32(ch_node, "azoteq,filt-str-trackpad",
+				      &val)) {
+		if (val > IQS626_FILT_STR_MAX) {
+			dev_err(&client->dev,
+				"Invalid %s channel filter strength: %u\n",
+				fwnode_get_name(ch_node), val);
+			return -EINVAL;
+		}
+
+		sys_reg->misc_b &= ~IQS626_MISC_B_FILT_STR_TPx;
+		sys_reg->misc_b |= val;
+	}
+
+	if (!fwnode_property_read_u32(ch_node, "azoteq,filt-str-np-cnt",
+				      &val)) {
+		if (val > IQS626_FILT_STR_MAX) {
+			dev_err(&client->dev,
+				"Invalid %s channel filter strength: %u\n",
+				fwnode_get_name(ch_node), val);
+			return -EINVAL;
+		}
+
+		*hyst &= ~IQS626_FILT_STR_NP_TPx_MASK;
+		*hyst |= (val << IQS626_FILT_STR_NP_TPx_SHIFT);
+	}
+
+	if (!fwnode_property_read_u32(ch_node, "azoteq,filt-str-lp-cnt",
+				      &val)) {
+		if (val > IQS626_FILT_STR_MAX) {
+			dev_err(&client->dev,
+				"Invalid %s channel filter strength: %u\n",
+				fwnode_get_name(ch_node), val);
+			return -EINVAL;
+		}
+
+		*hyst &= ~IQS626_FILT_STR_LP_TPx_MASK;
+		*hyst |= (val << IQS626_FILT_STR_LP_TPx_SHIFT);
+	}
+
+	if (!fwnode_property_present(ch_node, "linux,keycodes"))
+		return 0;
+
+	count = fwnode_property_count_u32(ch_node, "linux,keycodes");
+	if (count > IQS626_NUM_GESTURES) {
+		dev_err(&client->dev, "Too many keycodes present\n");
+		return -EINVAL;
+	} else if (count < 0) {
+		dev_err(&client->dev, "Failed to count keycodes: %d\n", count);
+		return count;
+	}
+
+	error = fwnode_property_read_u32_array(ch_node, "linux,keycodes",
+					       iqs626->tp_code, count);
+	if (error) {
+		dev_err(&client->dev, "Failed to read keycodes: %d\n", error);
+		return error;
+	}
+
+	sys_reg->misc_b &= ~IQS626_MISC_B_TPx_SWIPE;
+	if (fwnode_property_present(ch_node, "azoteq,gesture-swipe"))
+		sys_reg->misc_b |= IQS626_MISC_B_TPx_SWIPE;
+
+	if (!fwnode_property_read_u32(ch_node, "azoteq,timeout-tap-ms",
+				      &val)) {
+		if (val > IQS626_TIMEOUT_TAP_MS_MAX) {
+			dev_err(&client->dev,
+				"Invalid %s channel timeout: %u\n",
+				fwnode_get_name(ch_node), val);
+			return -EINVAL;
+		}
+
+		sys_reg->timeout_tap = val / 16;
+	}
+
+	if (!fwnode_property_read_u32(ch_node, "azoteq,timeout-swipe-ms",
+				      &val)) {
+		if (val > IQS626_TIMEOUT_SWIPE_MS_MAX) {
+			dev_err(&client->dev,
+				"Invalid %s channel timeout: %u\n",
+				fwnode_get_name(ch_node), val);
+			return -EINVAL;
+		}
+
+		sys_reg->timeout_swipe = val / 16;
+	}
+
+	if (!fwnode_property_read_u32(ch_node, "azoteq,thresh-swipe",
+				      &val)) {
+		if (val > IQS626_THRESH_SWIPE_MAX) {
+			dev_err(&client->dev,
+				"Invalid %s channel threshold: %u\n",
+				fwnode_get_name(ch_node), val);
+			return -EINVAL;
+		}
+
+		sys_reg->thresh_swipe = val;
+	}
+
+	sys_reg->event_mask &= ~IQS626_EVENT_MASK_GESTURE;
+
+	return 0;
+}
+
+static noinline_for_stack int
+iqs626_parse_channel(struct iqs626_private *iqs626,
+		     const struct fwnode_handle *ch_node,
+		     enum iqs626_ch_id ch_id)
+{
+	struct iqs626_sys_reg *sys_reg = &iqs626->sys_reg;
+	struct i2c_client *client = iqs626->client;
+	u8 *engine, *filter, *rx_enable, *tx_enable;
+	u8 *assoc_select, *assoc_weight;
+	unsigned int val;
+	int error, i;
+
+	switch (ch_id) {
+	case IQS626_CH_ULP_0:
+		engine = sys_reg->ch_reg_ulp.engine;
+		break;
+
+	case IQS626_CH_TP_2:
+	case IQS626_CH_TP_3:
+		engine = sys_reg->tp_grp_reg.engine;
+		break;
+
+	case IQS626_CH_GEN_0:
+	case IQS626_CH_GEN_1:
+	case IQS626_CH_GEN_2:
+		i = ch_id - IQS626_CH_GEN_0;
+		engine = sys_reg->ch_reg_gen[i].engine;
+		break;
+
+	case IQS626_CH_HALL:
+		engine = &sys_reg->ch_reg_hall.engine;
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	*engine |= IQS626_CHx_ENG_0_MEAS_CAP_SIZE;
+	if (fwnode_property_present(ch_node, "azoteq,meas-cap-decrease"))
+		*engine &= ~IQS626_CHx_ENG_0_MEAS_CAP_SIZE;
+
+	*engine |= IQS626_CHx_ENG_0_RX_TERM_VSS;
+	if (!fwnode_property_read_u32(ch_node, "azoteq,rx-inactive", &val)) {
+		switch (val) {
+		case IQS626_RX_INACTIVE_VSS:
+			break;
+
+		case IQS626_RX_INACTIVE_FLOAT:
+			*engine &= ~IQS626_CHx_ENG_0_RX_TERM_VSS;
+			if (ch_id == IQS626_CH_GEN_0 ||
+			    ch_id == IQS626_CH_GEN_1 ||
+			    ch_id == IQS626_CH_GEN_2)
+				*(engine + 4) &= ~IQS626_CHx_ENG_4_RX_TERM_VREG;
+			break;
+
+		case IQS626_RX_INACTIVE_VREG:
+			if (ch_id == IQS626_CH_GEN_0 ||
+			    ch_id == IQS626_CH_GEN_1 ||
+			    ch_id == IQS626_CH_GEN_2) {
+				*engine &= ~IQS626_CHx_ENG_0_RX_TERM_VSS;
+				*(engine + 4) |= IQS626_CHx_ENG_4_RX_TERM_VREG;
+				break;
+			}
+			fallthrough;
+
+		default:
+			dev_err(&client->dev,
+				"Invalid %s channel CRX pin termination: %u\n",
+				fwnode_get_name(ch_node), val);
+			return -EINVAL;
+		}
+	}
+
+	*engine &= ~IQS626_CHx_ENG_0_LINEARIZE;
+	if (fwnode_property_present(ch_node, "azoteq,linearize"))
+		*engine |= IQS626_CHx_ENG_0_LINEARIZE;
+
+	*engine &= ~IQS626_CHx_ENG_0_DUAL_DIR;
+	if (fwnode_property_present(ch_node, "azoteq,dual-direction"))
+		*engine |= IQS626_CHx_ENG_0_DUAL_DIR;
+
+	*engine &= ~IQS626_CHx_ENG_0_FILT_DISABLE;
+	if (fwnode_property_present(ch_node, "azoteq,filt-disable"))
+		*engine |= IQS626_CHx_ENG_0_FILT_DISABLE;
+
+	if (!fwnode_property_read_u32(ch_node, "azoteq,ati-mode", &val)) {
+		if (val > IQS626_CHx_ENG_0_ATI_MODE_MAX) {
+			dev_err(&client->dev,
+				"Invalid %s channel ATI mode: %u\n",
+				fwnode_get_name(ch_node), val);
+			return -EINVAL;
+		}
+
+		*engine &= ~IQS626_CHx_ENG_0_ATI_MODE_MASK;
+		*engine |= val;
+	}
+
+	if (ch_id == IQS626_CH_HALL)
+		return 0;
+
+	*(engine + 1) &= ~IQS626_CHx_ENG_1_CCT_ENABLE;
+	if (!fwnode_property_read_u32(ch_node, "azoteq,cct-increase",
+				      &val) && val) {
+		unsigned int orig_val = val--;
+
+		/*
+		 * In the case of the generic channels, the charge cycle time
+		 * field doubles in size and straddles two separate registers.
+		 */
+		if (ch_id == IQS626_CH_GEN_0 ||
+		    ch_id == IQS626_CH_GEN_1 ||
+		    ch_id == IQS626_CH_GEN_2) {
+			*(engine + 4) &= ~IQS626_CHx_ENG_4_CCT_LOW_1;
+			if (val & BIT(1))
+				*(engine + 4) |= IQS626_CHx_ENG_4_CCT_LOW_1;
+
+			*(engine + 4) &= ~IQS626_CHx_ENG_4_CCT_LOW_0;
+			if (val & BIT(0))
+				*(engine + 4) |= IQS626_CHx_ENG_4_CCT_LOW_0;
+
+			val >>= 2;
+		}
+
+		if (val & ~GENMASK(1, 0)) {
+			dev_err(&client->dev,
+				"Invalid %s channel charge cycle time: %u\n",
+				fwnode_get_name(ch_node), orig_val);
+			return -EINVAL;
+		}
+
+		*(engine + 1) &= ~IQS626_CHx_ENG_1_CCT_HIGH_1;
+		if (val & BIT(1))
+			*(engine + 1) |= IQS626_CHx_ENG_1_CCT_HIGH_1;
+
+		*(engine + 1) &= ~IQS626_CHx_ENG_1_CCT_HIGH_0;
+		if (val & BIT(0))
+			*(engine + 1) |= IQS626_CHx_ENG_1_CCT_HIGH_0;
+
+		*(engine + 1) |= IQS626_CHx_ENG_1_CCT_ENABLE;
+	}
+
+	if (!fwnode_property_read_u32(ch_node, "azoteq,proj-bias", &val)) {
+		if (val > IQS626_CHx_ENG_1_PROJ_BIAS_MAX) {
+			dev_err(&client->dev,
+				"Invalid %s channel bias current: %u\n",
+				fwnode_get_name(ch_node), val);
+			return -EINVAL;
+		}
+
+		*(engine + 1) &= ~IQS626_CHx_ENG_1_PROJ_BIAS_MASK;
+		*(engine + 1) |= (val << IQS626_CHx_ENG_1_PROJ_BIAS_SHIFT);
+	}
+
+	if (!fwnode_property_read_u32(ch_node, "azoteq,sense-freq", &val)) {
+		if (val > IQS626_CHx_ENG_1_SENSE_FREQ_MAX) {
+			dev_err(&client->dev,
+				"Invalid %s channel sensing frequency: %u\n",
+				fwnode_get_name(ch_node), val);
+			return -EINVAL;
+		}
+
+		*(engine + 1) &= ~IQS626_CHx_ENG_1_SENSE_FREQ_MASK;
+		*(engine + 1) |= (val << IQS626_CHx_ENG_1_SENSE_FREQ_SHIFT);
+	}
+
+	*(engine + 1) &= ~IQS626_CHx_ENG_1_ATI_BAND_TIGHTEN;
+	if (fwnode_property_present(ch_node, "azoteq,ati-band-tighten"))
+		*(engine + 1) |= IQS626_CHx_ENG_1_ATI_BAND_TIGHTEN;
+
+	if (ch_id == IQS626_CH_TP_2 || ch_id == IQS626_CH_TP_3)
+		return iqs626_parse_trackpad(iqs626, ch_node);
+
+	if (ch_id == IQS626_CH_ULP_0) {
+		sys_reg->ch_reg_ulp.hyst &= ~IQS626_ULP_PROJ_ENABLE;
+		if (fwnode_property_present(ch_node, "azoteq,proj-enable"))
+			sys_reg->ch_reg_ulp.hyst |= IQS626_ULP_PROJ_ENABLE;
+
+		filter = &sys_reg->ch_reg_ulp.filter;
+
+		rx_enable = &sys_reg->ch_reg_ulp.rx_enable;
+		tx_enable = &sys_reg->ch_reg_ulp.tx_enable;
+	} else {
+		i = ch_id - IQS626_CH_GEN_0;
+		filter = &sys_reg->ch_reg_gen[i].filter;
+
+		rx_enable = &sys_reg->ch_reg_gen[i].rx_enable;
+		tx_enable = &sys_reg->ch_reg_gen[i].tx_enable;
+	}
+
+	if (!fwnode_property_read_u32(ch_node, "azoteq,filt-str-np-cnt",
+				      &val)) {
+		if (val > IQS626_FILT_STR_MAX) {
+			dev_err(&client->dev,
+				"Invalid %s channel filter strength: %u\n",
+				fwnode_get_name(ch_node), val);
+			return -EINVAL;
+		}
+
+		*filter &= ~IQS626_FILT_STR_NP_CNT_MASK;
+		*filter |= (val << IQS626_FILT_STR_NP_CNT_SHIFT);
+	}
+
+	if (!fwnode_property_read_u32(ch_node, "azoteq,filt-str-lp-cnt",
+				      &val)) {
+		if (val > IQS626_FILT_STR_MAX) {
+			dev_err(&client->dev,
+				"Invalid %s channel filter strength: %u\n",
+				fwnode_get_name(ch_node), val);
+			return -EINVAL;
+		}
+
+		*filter &= ~IQS626_FILT_STR_LP_CNT_MASK;
+		*filter |= (val << IQS626_FILT_STR_LP_CNT_SHIFT);
+	}
+
+	if (!fwnode_property_read_u32(ch_node, "azoteq,filt-str-np-lta",
+				      &val)) {
+		if (val > IQS626_FILT_STR_MAX) {
+			dev_err(&client->dev,
+				"Invalid %s channel filter strength: %u\n",
+				fwnode_get_name(ch_node), val);
+			return -EINVAL;
+		}
+
+		*filter &= ~IQS626_FILT_STR_NP_LTA_MASK;
+		*filter |= (val << IQS626_FILT_STR_NP_LTA_SHIFT);
+	}
+
+	if (!fwnode_property_read_u32(ch_node, "azoteq,filt-str-lp-lta",
+				      &val)) {
+		if (val > IQS626_FILT_STR_MAX) {
+			dev_err(&client->dev,
+				"Invalid %s channel filter strength: %u\n",
+				fwnode_get_name(ch_node), val);
+			return -EINVAL;
+		}
+
+		*filter &= ~IQS626_FILT_STR_LP_LTA_MASK;
+		*filter |= val;
+	}
+
+	error = iqs626_parse_pins(iqs626, ch_node, "azoteq,rx-enable",
+				  rx_enable);
+	if (error)
+		return error;
+
+	error = iqs626_parse_pins(iqs626, ch_node, "azoteq,tx-enable",
+				  tx_enable);
+	if (error)
+		return error;
+
+	if (ch_id == IQS626_CH_ULP_0)
+		return 0;
+
+	*(engine + 2) &= ~IQS626_CHx_ENG_2_LOCAL_CAP_ENABLE;
+	if (!fwnode_property_read_u32(ch_node, "azoteq,local-cap-size",
+				      &val) && val) {
+		unsigned int orig_val = val--;
+
+		if (val > IQS626_CHx_ENG_2_LOCAL_CAP_MAX) {
+			dev_err(&client->dev,
+				"Invalid %s channel local cap. size: %u\n",
+				fwnode_get_name(ch_node), orig_val);
+			return -EINVAL;
+		}
+
+		*(engine + 2) &= ~IQS626_CHx_ENG_2_LOCAL_CAP_MASK;
+		*(engine + 2) |= (val << IQS626_CHx_ENG_2_LOCAL_CAP_SHIFT);
+
+		*(engine + 2) |= IQS626_CHx_ENG_2_LOCAL_CAP_ENABLE;
+	}
+
+	if (!fwnode_property_read_u32(ch_node, "azoteq,sense-mode", &val)) {
+		if (val > IQS626_CHx_ENG_2_SENSE_MODE_MAX) {
+			dev_err(&client->dev,
+				"Invalid %s channel sensing mode: %u\n",
+				fwnode_get_name(ch_node), val);
+			return -EINVAL;
+		}
+
+		*(engine + 2) &= ~IQS626_CHx_ENG_2_SENSE_MODE_MASK;
+		*(engine + 2) |= val;
+	}
+
+	if (!fwnode_property_read_u32(ch_node, "azoteq,tx-freq", &val)) {
+		if (val > IQS626_CHx_ENG_3_TX_FREQ_MAX) {
+			dev_err(&client->dev,
+				"Invalid %s channel excitation frequency: %u\n",
+				fwnode_get_name(ch_node), val);
+			return -EINVAL;
+		}
+
+		*(engine + 3) &= ~IQS626_CHx_ENG_3_TX_FREQ_MASK;
+		*(engine + 3) |= (val << IQS626_CHx_ENG_3_TX_FREQ_SHIFT);
+	}
+
+	*(engine + 3) &= ~IQS626_CHx_ENG_3_INV_LOGIC;
+	if (fwnode_property_present(ch_node, "azoteq,invert-enable"))
+		*(engine + 3) |= IQS626_CHx_ENG_3_INV_LOGIC;
+
+	*(engine + 4) &= ~IQS626_CHx_ENG_4_COMP_DISABLE;
+	if (fwnode_property_present(ch_node, "azoteq,comp-disable"))
+		*(engine + 4) |= IQS626_CHx_ENG_4_COMP_DISABLE;
+
+	*(engine + 4) &= ~IQS626_CHx_ENG_4_STATIC_ENABLE;
+	if (fwnode_property_present(ch_node, "azoteq,static-enable"))
+		*(engine + 4) |= IQS626_CHx_ENG_4_STATIC_ENABLE;
+
+	i = ch_id - IQS626_CH_GEN_0;
+	assoc_select = &sys_reg->ch_reg_gen[i].assoc_select;
+	assoc_weight = &sys_reg->ch_reg_gen[i].assoc_weight;
+
+	*assoc_select = 0;
+	if (!fwnode_property_present(ch_node, "azoteq,assoc-select"))
+		return 0;
+
+	for (i = 0; i < ARRAY_SIZE(iqs626_channels); i++) {
+		if (fwnode_property_match_string(ch_node, "azoteq,assoc-select",
+						 iqs626_channels[i].name) < 0)
+			continue;
+
+		*assoc_select |= iqs626_channels[i].active;
+	}
+
+	if (fwnode_property_read_u32(ch_node, "azoteq,assoc-weight", &val))
+		return 0;
+
+	if (val > IQS626_GEN_WEIGHT_MAX) {
+		dev_err(&client->dev,
+			"Invalid %s channel associated weight: %u\n",
+			fwnode_get_name(ch_node), val);
+		return -EINVAL;
+	}
+
+	*assoc_weight = val;
+
+	return 0;
+}
+
+static int iqs626_parse_prop(struct iqs626_private *iqs626)
+{
+	struct iqs626_sys_reg *sys_reg = &iqs626->sys_reg;
+	struct i2c_client *client = iqs626->client;
+	struct fwnode_handle *ch_node;
+	unsigned int val;
+	int error, i;
+	u16 general;
+
+	if (!device_property_read_u32(&client->dev, "azoteq,suspend-mode",
+				      &val)) {
+		if (val > IQS626_SYS_SETTINGS_PWR_MODE_MAX) {
+			dev_err(&client->dev, "Invalid suspend mode: %u\n",
+				val);
+			return -EINVAL;
+		}
+
+		iqs626->suspend_mode = val;
+	}
+
+	error = regmap_raw_read(iqs626->regmap, IQS626_SYS_SETTINGS, sys_reg,
+				sizeof(*sys_reg));
+	if (error)
+		return error;
+
+	general = be16_to_cpu(sys_reg->general);
+	general &= IQS626_SYS_SETTINGS_ULP_UPDATE_MASK;
+
+	if (device_property_present(&client->dev, "azoteq,clk-div"))
+		general |= IQS626_SYS_SETTINGS_CLK_DIV;
+
+	if (device_property_present(&client->dev, "azoteq,ulp-enable"))
+		general |= IQS626_SYS_SETTINGS_ULP_AUTO;
+
+	if (!device_property_read_u32(&client->dev, "azoteq,ulp-update",
+				      &val)) {
+		if (val > IQS626_SYS_SETTINGS_ULP_UPDATE_MAX) {
+			dev_err(&client->dev, "Invalid update rate: %u\n", val);
+			return -EINVAL;
+		}
+
+		general &= ~IQS626_SYS_SETTINGS_ULP_UPDATE_MASK;
+		general |= (val << IQS626_SYS_SETTINGS_ULP_UPDATE_SHIFT);
+	}
+
+	sys_reg->misc_a &= ~IQS626_MISC_A_ATI_BAND_DISABLE;
+	if (device_property_present(&client->dev, "azoteq,ati-band-disable"))
+		sys_reg->misc_a |= IQS626_MISC_A_ATI_BAND_DISABLE;
+
+	sys_reg->misc_a &= ~IQS626_MISC_A_ATI_LP_ONLY;
+	if (device_property_present(&client->dev, "azoteq,ati-lp-only"))
+		sys_reg->misc_a |= IQS626_MISC_A_ATI_LP_ONLY;
+
+	if (!device_property_read_u32(&client->dev, "azoteq,gpio3-select",
+				      &val)) {
+		if (val > IQS626_MISC_A_GPIO3_SELECT_MAX) {
+			dev_err(&client->dev, "Invalid GPIO3 selection: %u\n",
+				val);
+			return -EINVAL;
+		}
+
+		sys_reg->misc_a &= ~IQS626_MISC_A_GPIO3_SELECT_MASK;
+		sys_reg->misc_a |= val;
+	}
+
+	if (!device_property_read_u32(&client->dev, "azoteq,reseed-select",
+				      &val)) {
+		if (val > IQS626_MISC_B_RESEED_UI_SEL_MAX) {
+			dev_err(&client->dev, "Invalid reseed selection: %u\n",
+				val);
+			return -EINVAL;
+		}
+
+		sys_reg->misc_b &= ~IQS626_MISC_B_RESEED_UI_SEL_MASK;
+		sys_reg->misc_b |= (val << IQS626_MISC_B_RESEED_UI_SEL_SHIFT);
+	}
+
+	sys_reg->misc_b &= ~IQS626_MISC_B_THRESH_EXTEND;
+	if (device_property_present(&client->dev, "azoteq,thresh-extend"))
+		sys_reg->misc_b |= IQS626_MISC_B_THRESH_EXTEND;
+
+	sys_reg->misc_b &= ~IQS626_MISC_B_TRACKING_UI_ENABLE;
+	if (device_property_present(&client->dev, "azoteq,tracking-enable"))
+		sys_reg->misc_b |= IQS626_MISC_B_TRACKING_UI_ENABLE;
+
+	sys_reg->misc_b &= ~IQS626_MISC_B_RESEED_OFFSET;
+	if (device_property_present(&client->dev, "azoteq,reseed-offset"))
+		sys_reg->misc_b |= IQS626_MISC_B_RESEED_OFFSET;
+
+	if (!device_property_read_u32(&client->dev, "azoteq,rate-np-ms",
+				      &val)) {
+		if (val > IQS626_RATE_NP_MS_MAX) {
+			dev_err(&client->dev, "Invalid report rate: %u\n", val);
+			return -EINVAL;
+		}
+
+		sys_reg->rate_np = val;
+	}
+
+	if (!device_property_read_u32(&client->dev, "azoteq,rate-lp-ms",
+				      &val)) {
+		if (val > IQS626_RATE_LP_MS_MAX) {
+			dev_err(&client->dev, "Invalid report rate: %u\n", val);
+			return -EINVAL;
+		}
+
+		sys_reg->rate_lp = val;
+	}
+
+	if (!device_property_read_u32(&client->dev, "azoteq,rate-ulp-ms",
+				      &val)) {
+		if (val > IQS626_RATE_ULP_MS_MAX) {
+			dev_err(&client->dev, "Invalid report rate: %u\n", val);
+			return -EINVAL;
+		}
+
+		sys_reg->rate_ulp = val / 16;
+	}
+
+	if (!device_property_read_u32(&client->dev, "azoteq,timeout-pwr-ms",
+				      &val)) {
+		if (val > IQS626_TIMEOUT_PWR_MS_MAX) {
+			dev_err(&client->dev, "Invalid timeout: %u\n", val);
+			return -EINVAL;
+		}
+
+		sys_reg->timeout_pwr = val / 512;
+	}
+
+	if (!device_property_read_u32(&client->dev, "azoteq,timeout-lta-ms",
+				      &val)) {
+		if (val > IQS626_TIMEOUT_LTA_MS_MAX) {
+			dev_err(&client->dev, "Invalid timeout: %u\n", val);
+			return -EINVAL;
+		}
+
+		sys_reg->timeout_lta = val / 512;
+	}
+
+	sys_reg->event_mask = ~((u8)IQS626_EVENT_MASK_SYS);
+	sys_reg->redo_ati = 0;
+
+	sys_reg->reseed = 0;
+	sys_reg->active = 0;
+
+	for (i = 0; i < ARRAY_SIZE(iqs626_channels); i++) {
+		ch_node = device_get_named_child_node(&client->dev,
+						      iqs626_channels[i].name);
+		if (!ch_node)
+			continue;
+
+		error = iqs626_parse_channel(iqs626, ch_node, i);
+		if (error)
+			return error;
+
+		error = iqs626_parse_ati_target(iqs626, ch_node, i);
+		if (error)
+			return error;
+
+		error = iqs626_parse_events(iqs626, ch_node, i);
+		if (error)
+			return error;
+
+		if (!fwnode_property_present(ch_node, "azoteq,ati-exclude"))
+			sys_reg->redo_ati |= iqs626_channels[i].active;
+
+		if (!fwnode_property_present(ch_node, "azoteq,reseed-disable"))
+			sys_reg->reseed |= iqs626_channels[i].active;
+
+		sys_reg->active |= iqs626_channels[i].active;
+	}
+
+	general |= IQS626_SYS_SETTINGS_EVENT_MODE;
+
+	/*
+	 * Enable streaming during normal-power mode if the trackpad is used to
+	 * report raw coordinates instead of gestures. In that case, the device
+	 * returns to event mode during low-power mode.
+	 */
+	if (sys_reg->active & iqs626_channels[IQS626_CH_TP_2].active &&
+	    sys_reg->event_mask & IQS626_EVENT_MASK_GESTURE)
+		general |= IQS626_SYS_SETTINGS_EVENT_MODE_LP;
+
+	general |= IQS626_SYS_SETTINGS_REDO_ATI;
+	general |= IQS626_SYS_SETTINGS_ACK_RESET;
+
+	sys_reg->general = cpu_to_be16(general);
+
+	error = regmap_raw_write(iqs626->regmap, IQS626_SYS_SETTINGS,
+				 &iqs626->sys_reg, sizeof(iqs626->sys_reg));
+	if (error)
+		return error;
+
+	iqs626_irq_wait();
+
+	return 0;
+}
+
+static int iqs626_input_init(struct iqs626_private *iqs626)
+{
+	struct iqs626_sys_reg *sys_reg = &iqs626->sys_reg;
+	struct i2c_client *client = iqs626->client;
+	int error, i, j;
+
+	iqs626->keypad = devm_input_allocate_device(&client->dev);
+	if (!iqs626->keypad)
+		return -ENOMEM;
+
+	iqs626->keypad->keycodemax = ARRAY_SIZE(iqs626->kp_code);
+	iqs626->keypad->keycode = iqs626->kp_code;
+	iqs626->keypad->keycodesize = sizeof(**iqs626->kp_code);
+
+	iqs626->keypad->name = "iqs626a_keypad";
+	iqs626->keypad->id.bustype = BUS_I2C;
+
+	for (i = 0; i < ARRAY_SIZE(iqs626_channels); i++) {
+		if (!(sys_reg->active & iqs626_channels[i].active))
+			continue;
+
+		for (j = 0; j < ARRAY_SIZE(iqs626_events); j++) {
+			if (!iqs626->kp_type[i][j])
+				continue;
+
+			input_set_capability(iqs626->keypad,
+					     iqs626->kp_type[i][j],
+					     iqs626->kp_code[i][j]);
+		}
+	}
+
+	if (!(sys_reg->active & iqs626_channels[IQS626_CH_TP_2].active))
+		return 0;
+
+	iqs626->trackpad = devm_input_allocate_device(&client->dev);
+	if (!iqs626->trackpad)
+		return -ENOMEM;
+
+	iqs626->trackpad->keycodemax = ARRAY_SIZE(iqs626->tp_code);
+	iqs626->trackpad->keycode = iqs626->tp_code;
+	iqs626->trackpad->keycodesize = sizeof(*iqs626->tp_code);
+
+	iqs626->trackpad->name = "iqs626a_trackpad";
+	iqs626->trackpad->id.bustype = BUS_I2C;
+
+	/*
+	 * Present the trackpad as a traditional pointing device if no gestures
+	 * have been mapped to a keycode.
+	 */
+	if (sys_reg->event_mask & IQS626_EVENT_MASK_GESTURE) {
+		u8 tp_mask = iqs626_channels[IQS626_CH_TP_3].active;
+
+		input_set_capability(iqs626->trackpad, EV_KEY, BTN_TOUCH);
+		input_set_abs_params(iqs626->trackpad, ABS_Y, 0, 255, 0, 0);
+
+		if ((sys_reg->active & tp_mask) == tp_mask)
+			input_set_abs_params(iqs626->trackpad,
+					     ABS_X, 0, 255, 0, 0);
+		else
+			input_set_abs_params(iqs626->trackpad,
+					     ABS_X, 0, 128, 0, 0);
+
+		touchscreen_parse_properties(iqs626->trackpad, false,
+					     &iqs626->prop);
+	} else {
+		for (i = 0; i < IQS626_NUM_GESTURES; i++)
+			if (iqs626->tp_code[i] != KEY_RESERVED)
+				input_set_capability(iqs626->trackpad, EV_KEY,
+						     iqs626->tp_code[i]);
+	}
+
+	error = input_register_device(iqs626->trackpad);
+	if (error)
+		dev_err(&client->dev, "Failed to register trackpad: %d\n",
+			error);
+
+	return error;
+}
+
+static int iqs626_report(struct iqs626_private *iqs626)
+{
+	struct iqs626_sys_reg *sys_reg = &iqs626->sys_reg;
+	struct i2c_client *client = iqs626->client;
+	struct iqs626_flags flags;
+	__le16 hall_output;
+	int error, i, j;
+	u8 state;
+	u8 *dir_mask = &flags.states[IQS626_ST_OFFS_DIR];
+
+	error = regmap_raw_read(iqs626->regmap, IQS626_SYS_FLAGS, &flags,
+				sizeof(flags));
+	if (error) {
+		dev_err(&client->dev, "Failed to read device status: %d\n",
+			error);
+		return error;
+	}
+
+	/*
+	 * The device resets itself if its own watchdog bites, which can happen
+	 * in the event of an I2C communication error. In this case, the device
+	 * asserts a SHOW_RESET interrupt and all registers must be restored.
+	 */
+	if (be16_to_cpu(flags.system) & IQS626_SYS_FLAGS_SHOW_RESET) {
+		dev_err(&client->dev, "Unexpected device reset\n");
+
+		error = regmap_raw_write(iqs626->regmap, IQS626_SYS_SETTINGS,
+					 sys_reg, sizeof(*sys_reg));
+		if (error)
+			dev_err(&client->dev,
+				"Failed to re-initialize device: %d\n", error);
+
+		return error;
+	}
+
+	if (be16_to_cpu(flags.system) & IQS626_SYS_FLAGS_IN_ATI)
+		return 0;
+
+	/*
+	 * Unlike the ULP or generic channels, the Hall channel does not have a
+	 * direction flag. Instead, the direction (i.e. magnet polarity) can be
+	 * derived based on the sign of the 2's complement differential output.
+	 */
+	if (sys_reg->active & iqs626_channels[IQS626_CH_HALL].active) {
+		error = regmap_raw_read(iqs626->regmap, IQS626_HALL_OUTPUT,
+					&hall_output, sizeof(hall_output));
+		if (error) {
+			dev_err(&client->dev,
+				"Failed to read Hall output: %d\n", error);
+			return error;
+		}
+
+		*dir_mask &= ~iqs626_channels[IQS626_CH_HALL].active;
+		if (le16_to_cpu(hall_output) < 0x8000)
+			*dir_mask |= iqs626_channels[IQS626_CH_HALL].active;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(iqs626_channels); i++) {
+		if (!(sys_reg->active & iqs626_channels[i].active))
+			continue;
+
+		for (j = 0; j < ARRAY_SIZE(iqs626_events); j++) {
+			if (!iqs626->kp_type[i][j])
+				continue;
+
+			state = flags.states[iqs626_events[j].st_offs];
+			state &= iqs626_events[j].dir_up ? *dir_mask
+							 : ~(*dir_mask);
+			state &= iqs626_channels[i].active;
+
+			input_event(iqs626->keypad, iqs626->kp_type[i][j],
+				    iqs626->kp_code[i][j], !!state);
+		}
+	}
+
+	input_sync(iqs626->keypad);
+
+	/*
+	 * The following completion signals that ATI has finished, any initial
+	 * switch states have been reported and the keypad can be registered.
+	 */
+	complete_all(&iqs626->ati_done);
+
+	if (!(sys_reg->active & iqs626_channels[IQS626_CH_TP_2].active))
+		return 0;
+
+	if (sys_reg->event_mask & IQS626_EVENT_MASK_GESTURE) {
+		state = flags.states[IQS626_ST_OFFS_TOUCH];
+		state &= iqs626_channels[IQS626_CH_TP_2].active;
+
+		input_report_key(iqs626->trackpad, BTN_TOUCH, state);
+
+		if (state)
+			touchscreen_report_pos(iqs626->trackpad, &iqs626->prop,
+					       flags.trackpad_x,
+					       flags.trackpad_y, false);
+	} else {
+		for (i = 0; i < IQS626_NUM_GESTURES; i++)
+			input_report_key(iqs626->trackpad, iqs626->tp_code[i],
+					 flags.gesture & BIT(i));
+
+		if (flags.gesture & GENMASK(IQS626_GESTURE_TAP, 0)) {
+			input_sync(iqs626->trackpad);
+
+			/*
+			 * Momentary gestures are followed by a complementary
+			 * release cycle so as to emulate a full keystroke.
+			 */
+			for (i = 0; i < IQS626_GESTURE_HOLD; i++)
+				input_report_key(iqs626->trackpad,
+						 iqs626->tp_code[i], 0);
+		}
+	}
+
+	input_sync(iqs626->trackpad);
+
+	return 0;
+}
+
+static irqreturn_t iqs626_irq(int irq, void *context)
+{
+	struct iqs626_private *iqs626 = context;
+
+	if (iqs626_report(iqs626))
+		return IRQ_NONE;
+
+	/*
+	 * The device does not deassert its interrupt (RDY) pin until shortly
+	 * after receiving an I2C stop condition; the following delay ensures
+	 * the interrupt handler does not return before this time.
+	 */
+	iqs626_irq_wait();
+
+	return IRQ_HANDLED;
+}
+
+static const struct regmap_config iqs626_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 16,
+	.max_register = IQS626_MAX_REG,
+};
+
+static int iqs626_probe(struct i2c_client *client)
+{
+	struct iqs626_ver_info ver_info;
+	struct iqs626_private *iqs626;
+	int error;
+
+	iqs626 = devm_kzalloc(&client->dev, sizeof(*iqs626), GFP_KERNEL);
+	if (!iqs626)
+		return -ENOMEM;
+
+	i2c_set_clientdata(client, iqs626);
+	iqs626->client = client;
+
+	iqs626->regmap = devm_regmap_init_i2c(client, &iqs626_regmap_config);
+	if (IS_ERR(iqs626->regmap)) {
+		error = PTR_ERR(iqs626->regmap);
+		dev_err(&client->dev, "Failed to initialize register map: %d\n",
+			error);
+		return error;
+	}
+
+	init_completion(&iqs626->ati_done);
+
+	error = regmap_raw_read(iqs626->regmap, IQS626_VER_INFO, &ver_info,
+				sizeof(ver_info));
+	if (error)
+		return error;
+
+	if (ver_info.prod_num != IQS626_VER_INFO_PROD_NUM) {
+		dev_err(&client->dev, "Unrecognized product number: 0x%02X\n",
+			ver_info.prod_num);
+		return -EINVAL;
+	}
+
+	error = iqs626_parse_prop(iqs626);
+	if (error)
+		return error;
+
+	error = iqs626_input_init(iqs626);
+	if (error)
+		return error;
+
+	error = devm_request_threaded_irq(&client->dev, client->irq,
+					  NULL, iqs626_irq, IRQF_ONESHOT,
+					  client->name, iqs626);
+	if (error) {
+		dev_err(&client->dev, "Failed to request IRQ: %d\n", error);
+		return error;
+	}
+
+	if (!wait_for_completion_timeout(&iqs626->ati_done,
+					 msecs_to_jiffies(2000))) {
+		dev_err(&client->dev, "Failed to complete ATI\n");
+		return -ETIMEDOUT;
+	}
+
+	/*
+	 * The keypad may include one or more switches and is not registered
+	 * until ATI is complete and the initial switch states are read.
+	 */
+	error = input_register_device(iqs626->keypad);
+	if (error)
+		dev_err(&client->dev, "Failed to register keypad: %d\n", error);
+
+	return error;
+}
+
+static int __maybe_unused iqs626_suspend(struct device *dev)
+{
+	struct iqs626_private *iqs626 = dev_get_drvdata(dev);
+	struct i2c_client *client = iqs626->client;
+	unsigned int val;
+	int error;
+
+	if (!iqs626->suspend_mode)
+		return 0;
+
+	disable_irq(client->irq);
+
+	/*
+	 * Automatic power mode switching must be disabled before the device is
+	 * forced into any particular power mode. In this case, the device will
+	 * transition into normal-power mode.
+	 */
+	error = regmap_update_bits(iqs626->regmap, IQS626_SYS_SETTINGS,
+				   IQS626_SYS_SETTINGS_DIS_AUTO, ~0);
+	if (error)
+		goto err_irq;
+
+	/*
+	 * The following check ensures the device has completed its transition
+	 * into normal-power mode before a manual mode switch is performed.
+	 */
+	error = regmap_read_poll_timeout(iqs626->regmap, IQS626_SYS_FLAGS, val,
+					!(val & IQS626_SYS_FLAGS_PWR_MODE_MASK),
+					 IQS626_PWR_MODE_POLL_SLEEP_US,
+					 IQS626_PWR_MODE_POLL_TIMEOUT_US);
+	if (error)
+		goto err_irq;
+
+	error = regmap_update_bits(iqs626->regmap, IQS626_SYS_SETTINGS,
+				   IQS626_SYS_SETTINGS_PWR_MODE_MASK,
+				   iqs626->suspend_mode <<
+				   IQS626_SYS_SETTINGS_PWR_MODE_SHIFT);
+	if (error)
+		goto err_irq;
+
+	/*
+	 * This last check ensures the device has completed its transition into
+	 * the desired power mode to prevent any spurious interrupts from being
+	 * triggered after iqs626_suspend has already returned.
+	 */
+	error = regmap_read_poll_timeout(iqs626->regmap, IQS626_SYS_FLAGS, val,
+					 (val & IQS626_SYS_FLAGS_PWR_MODE_MASK)
+					 == (iqs626->suspend_mode <<
+					     IQS626_SYS_FLAGS_PWR_MODE_SHIFT),
+					 IQS626_PWR_MODE_POLL_SLEEP_US,
+					 IQS626_PWR_MODE_POLL_TIMEOUT_US);
+
+err_irq:
+	iqs626_irq_wait();
+	enable_irq(client->irq);
+
+	return error;
+}
+
+static int __maybe_unused iqs626_resume(struct device *dev)
+{
+	struct iqs626_private *iqs626 = dev_get_drvdata(dev);
+	struct i2c_client *client = iqs626->client;
+	unsigned int val;
+	int error;
+
+	if (!iqs626->suspend_mode)
+		return 0;
+
+	disable_irq(client->irq);
+
+	error = regmap_update_bits(iqs626->regmap, IQS626_SYS_SETTINGS,
+				   IQS626_SYS_SETTINGS_PWR_MODE_MASK, 0);
+	if (error)
+		goto err_irq;
+
+	/*
+	 * This check ensures the device has returned to normal-power mode
+	 * before automatic power mode switching is re-enabled.
+	 */
+	error = regmap_read_poll_timeout(iqs626->regmap, IQS626_SYS_FLAGS, val,
+					!(val & IQS626_SYS_FLAGS_PWR_MODE_MASK),
+					 IQS626_PWR_MODE_POLL_SLEEP_US,
+					 IQS626_PWR_MODE_POLL_TIMEOUT_US);
+	if (error)
+		goto err_irq;
+
+	error = regmap_update_bits(iqs626->regmap, IQS626_SYS_SETTINGS,
+				   IQS626_SYS_SETTINGS_DIS_AUTO, 0);
+	if (error)
+		goto err_irq;
+
+	/*
+	 * This step reports any events that may have been "swallowed" as a
+	 * result of polling PWR_MODE (which automatically acknowledges any
+	 * pending interrupts).
+	 */
+	error = iqs626_report(iqs626);
+
+err_irq:
+	iqs626_irq_wait();
+	enable_irq(client->irq);
+
+	return error;
+}
+
+static SIMPLE_DEV_PM_OPS(iqs626_pm, iqs626_suspend, iqs626_resume);
+
+static const struct of_device_id iqs626_of_match[] = {
+	{ .compatible = "azoteq,iqs626a" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, iqs626_of_match);
+
+static struct i2c_driver iqs626_i2c_driver = {
+	.driver = {
+		.name = "iqs626a",
+		.of_match_table = iqs626_of_match,
+		.pm = &iqs626_pm,
+	},
+	.probe_new = iqs626_probe,
+};
+module_i2c_driver(iqs626_i2c_driver);
+
+MODULE_AUTHOR("Jeff LaBundy <jeff@labundy.com>");
+MODULE_DESCRIPTION("Azoteq IQS626A Capacitive Touch Controller");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/misc/iqs7222.c b/drivers/input/misc/iqs7222.c
new file mode 100644
index 000000000..f24b174c7
--- /dev/null
+++ b/drivers/input/misc/iqs7222.c
@@ -0,0 +1,2602 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Azoteq IQS7222A/B/C Capacitive Touch Controller
+ *
+ * Copyright (C) 2022 Jeff LaBundy <jeff@labundy.com>
+ */
+
+#include <linux/bits.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/gpio/consumer.h>
+#include <linux/i2c.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/ktime.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/property.h>
+#include <linux/slab.h>
+#include <asm/unaligned.h>
+
+#define IQS7222_PROD_NUM			0x00
+#define IQS7222_PROD_NUM_A			840
+#define IQS7222_PROD_NUM_B			698
+#define IQS7222_PROD_NUM_C			863
+
+#define IQS7222_SYS_STATUS			0x10
+#define IQS7222_SYS_STATUS_RESET		BIT(3)
+#define IQS7222_SYS_STATUS_ATI_ERROR		BIT(1)
+#define IQS7222_SYS_STATUS_ATI_ACTIVE		BIT(0)
+
+#define IQS7222_CHAN_SETUP_0_REF_MODE_MASK	GENMASK(15, 14)
+#define IQS7222_CHAN_SETUP_0_REF_MODE_FOLLOW	BIT(15)
+#define IQS7222_CHAN_SETUP_0_REF_MODE_REF	BIT(14)
+#define IQS7222_CHAN_SETUP_0_CHAN_EN		BIT(8)
+
+#define IQS7222_SLDR_SETUP_0_CHAN_CNT_MASK	GENMASK(2, 0)
+#define IQS7222_SLDR_SETUP_2_RES_MASK		GENMASK(15, 8)
+#define IQS7222_SLDR_SETUP_2_RES_SHIFT		8
+#define IQS7222_SLDR_SETUP_2_TOP_SPEED_MASK	GENMASK(7, 0)
+
+#define IQS7222_GPIO_SETUP_0_GPIO_EN		BIT(0)
+
+#define IQS7222_SYS_SETUP			0xD0
+#define IQS7222_SYS_SETUP_INTF_MODE_MASK	GENMASK(7, 6)
+#define IQS7222_SYS_SETUP_INTF_MODE_TOUCH	BIT(7)
+#define IQS7222_SYS_SETUP_INTF_MODE_EVENT	BIT(6)
+#define IQS7222_SYS_SETUP_PWR_MODE_MASK		GENMASK(5, 4)
+#define IQS7222_SYS_SETUP_PWR_MODE_AUTO		IQS7222_SYS_SETUP_PWR_MODE_MASK
+#define IQS7222_SYS_SETUP_REDO_ATI		BIT(2)
+#define IQS7222_SYS_SETUP_ACK_RESET		BIT(0)
+
+#define IQS7222_EVENT_MASK_ATI			BIT(12)
+#define IQS7222_EVENT_MASK_SLDR			BIT(10)
+#define IQS7222_EVENT_MASK_TOUCH		BIT(1)
+#define IQS7222_EVENT_MASK_PROX			BIT(0)
+
+#define IQS7222_COMMS_HOLD			BIT(0)
+#define IQS7222_COMMS_ERROR			0xEEEE
+#define IQS7222_COMMS_RETRY_MS			50
+#define IQS7222_COMMS_TIMEOUT_MS		100
+#define IQS7222_RESET_TIMEOUT_MS		250
+#define IQS7222_ATI_TIMEOUT_MS			2000
+
+#define IQS7222_MAX_COLS_STAT			8
+#define IQS7222_MAX_COLS_CYCLE			3
+#define IQS7222_MAX_COLS_GLBL			3
+#define IQS7222_MAX_COLS_BTN			3
+#define IQS7222_MAX_COLS_CHAN			6
+#define IQS7222_MAX_COLS_FILT			2
+#define IQS7222_MAX_COLS_SLDR			11
+#define IQS7222_MAX_COLS_GPIO			3
+#define IQS7222_MAX_COLS_SYS			13
+
+#define IQS7222_MAX_CHAN			20
+#define IQS7222_MAX_SLDR			2
+
+#define IQS7222_NUM_RETRIES			5
+#define IQS7222_REG_OFFSET			0x100
+
+enum iqs7222_reg_key_id {
+	IQS7222_REG_KEY_NONE,
+	IQS7222_REG_KEY_PROX,
+	IQS7222_REG_KEY_TOUCH,
+	IQS7222_REG_KEY_DEBOUNCE,
+	IQS7222_REG_KEY_TAP,
+	IQS7222_REG_KEY_TAP_LEGACY,
+	IQS7222_REG_KEY_AXIAL,
+	IQS7222_REG_KEY_AXIAL_LEGACY,
+	IQS7222_REG_KEY_WHEEL,
+	IQS7222_REG_KEY_NO_WHEEL,
+	IQS7222_REG_KEY_RESERVED
+};
+
+enum iqs7222_reg_grp_id {
+	IQS7222_REG_GRP_STAT,
+	IQS7222_REG_GRP_FILT,
+	IQS7222_REG_GRP_CYCLE,
+	IQS7222_REG_GRP_GLBL,
+	IQS7222_REG_GRP_BTN,
+	IQS7222_REG_GRP_CHAN,
+	IQS7222_REG_GRP_SLDR,
+	IQS7222_REG_GRP_GPIO,
+	IQS7222_REG_GRP_SYS,
+	IQS7222_NUM_REG_GRPS
+};
+
+static const char * const iqs7222_reg_grp_names[IQS7222_NUM_REG_GRPS] = {
+	[IQS7222_REG_GRP_CYCLE] = "cycle",
+	[IQS7222_REG_GRP_CHAN] = "channel",
+	[IQS7222_REG_GRP_SLDR] = "slider",
+	[IQS7222_REG_GRP_GPIO] = "gpio",
+};
+
+static const unsigned int iqs7222_max_cols[IQS7222_NUM_REG_GRPS] = {
+	[IQS7222_REG_GRP_STAT] = IQS7222_MAX_COLS_STAT,
+	[IQS7222_REG_GRP_CYCLE] = IQS7222_MAX_COLS_CYCLE,
+	[IQS7222_REG_GRP_GLBL] = IQS7222_MAX_COLS_GLBL,
+	[IQS7222_REG_GRP_BTN] = IQS7222_MAX_COLS_BTN,
+	[IQS7222_REG_GRP_CHAN] = IQS7222_MAX_COLS_CHAN,
+	[IQS7222_REG_GRP_FILT] = IQS7222_MAX_COLS_FILT,
+	[IQS7222_REG_GRP_SLDR] = IQS7222_MAX_COLS_SLDR,
+	[IQS7222_REG_GRP_GPIO] = IQS7222_MAX_COLS_GPIO,
+	[IQS7222_REG_GRP_SYS] = IQS7222_MAX_COLS_SYS,
+};
+
+static const unsigned int iqs7222_gpio_links[] = { 2, 5, 6, };
+
+struct iqs7222_event_desc {
+	const char *name;
+	u16 mask;
+	u16 val;
+	u16 enable;
+	enum iqs7222_reg_key_id reg_key;
+};
+
+static const struct iqs7222_event_desc iqs7222_kp_events[] = {
+	{
+		.name = "event-prox",
+		.enable = IQS7222_EVENT_MASK_PROX,
+		.reg_key = IQS7222_REG_KEY_PROX,
+	},
+	{
+		.name = "event-touch",
+		.enable = IQS7222_EVENT_MASK_TOUCH,
+		.reg_key = IQS7222_REG_KEY_TOUCH,
+	},
+};
+
+static const struct iqs7222_event_desc iqs7222_sl_events[] = {
+	{ .name = "event-press", },
+	{
+		.name = "event-tap",
+		.mask = BIT(0),
+		.val = BIT(0),
+		.enable = BIT(0),
+		.reg_key = IQS7222_REG_KEY_TAP,
+	},
+	{
+		.name = "event-swipe-pos",
+		.mask = BIT(5) | BIT(1),
+		.val = BIT(1),
+		.enable = BIT(1),
+		.reg_key = IQS7222_REG_KEY_AXIAL,
+	},
+	{
+		.name = "event-swipe-neg",
+		.mask = BIT(5) | BIT(1),
+		.val = BIT(5) | BIT(1),
+		.enable = BIT(1),
+		.reg_key = IQS7222_REG_KEY_AXIAL,
+	},
+	{
+		.name = "event-flick-pos",
+		.mask = BIT(5) | BIT(2),
+		.val = BIT(2),
+		.enable = BIT(2),
+		.reg_key = IQS7222_REG_KEY_AXIAL,
+	},
+	{
+		.name = "event-flick-neg",
+		.mask = BIT(5) | BIT(2),
+		.val = BIT(5) | BIT(2),
+		.enable = BIT(2),
+		.reg_key = IQS7222_REG_KEY_AXIAL,
+	},
+};
+
+struct iqs7222_reg_grp_desc {
+	u16 base;
+	int num_row;
+	int num_col;
+};
+
+struct iqs7222_dev_desc {
+	u16 prod_num;
+	u16 fw_major;
+	u16 fw_minor;
+	u16 sldr_res;
+	u16 touch_link;
+	u16 wheel_enable;
+	int allow_offset;
+	int event_offset;
+	int comms_offset;
+	bool legacy_gesture;
+	struct iqs7222_reg_grp_desc reg_grps[IQS7222_NUM_REG_GRPS];
+};
+
+static const struct iqs7222_dev_desc iqs7222_devs[] = {
+	{
+		.prod_num = IQS7222_PROD_NUM_A,
+		.fw_major = 1,
+		.fw_minor = 13,
+		.sldr_res = U8_MAX * 16,
+		.touch_link = 1768,
+		.allow_offset = 9,
+		.event_offset = 10,
+		.comms_offset = 12,
+		.reg_grps = {
+			[IQS7222_REG_GRP_STAT] = {
+				.base = IQS7222_SYS_STATUS,
+				.num_row = 1,
+				.num_col = 8,
+			},
+			[IQS7222_REG_GRP_CYCLE] = {
+				.base = 0x8000,
+				.num_row = 7,
+				.num_col = 3,
+			},
+			[IQS7222_REG_GRP_GLBL] = {
+				.base = 0x8700,
+				.num_row = 1,
+				.num_col = 3,
+			},
+			[IQS7222_REG_GRP_BTN] = {
+				.base = 0x9000,
+				.num_row = 12,
+				.num_col = 3,
+			},
+			[IQS7222_REG_GRP_CHAN] = {
+				.base = 0xA000,
+				.num_row = 12,
+				.num_col = 6,
+			},
+			[IQS7222_REG_GRP_FILT] = {
+				.base = 0xAC00,
+				.num_row = 1,
+				.num_col = 2,
+			},
+			[IQS7222_REG_GRP_SLDR] = {
+				.base = 0xB000,
+				.num_row = 2,
+				.num_col = 11,
+			},
+			[IQS7222_REG_GRP_GPIO] = {
+				.base = 0xC000,
+				.num_row = 1,
+				.num_col = 3,
+			},
+			[IQS7222_REG_GRP_SYS] = {
+				.base = IQS7222_SYS_SETUP,
+				.num_row = 1,
+				.num_col = 13,
+			},
+		},
+	},
+	{
+		.prod_num = IQS7222_PROD_NUM_A,
+		.fw_major = 1,
+		.fw_minor = 12,
+		.sldr_res = U8_MAX * 16,
+		.touch_link = 1768,
+		.allow_offset = 9,
+		.event_offset = 10,
+		.comms_offset = 12,
+		.legacy_gesture = true,
+		.reg_grps = {
+			[IQS7222_REG_GRP_STAT] = {
+				.base = IQS7222_SYS_STATUS,
+				.num_row = 1,
+				.num_col = 8,
+			},
+			[IQS7222_REG_GRP_CYCLE] = {
+				.base = 0x8000,
+				.num_row = 7,
+				.num_col = 3,
+			},
+			[IQS7222_REG_GRP_GLBL] = {
+				.base = 0x8700,
+				.num_row = 1,
+				.num_col = 3,
+			},
+			[IQS7222_REG_GRP_BTN] = {
+				.base = 0x9000,
+				.num_row = 12,
+				.num_col = 3,
+			},
+			[IQS7222_REG_GRP_CHAN] = {
+				.base = 0xA000,
+				.num_row = 12,
+				.num_col = 6,
+			},
+			[IQS7222_REG_GRP_FILT] = {
+				.base = 0xAC00,
+				.num_row = 1,
+				.num_col = 2,
+			},
+			[IQS7222_REG_GRP_SLDR] = {
+				.base = 0xB000,
+				.num_row = 2,
+				.num_col = 11,
+			},
+			[IQS7222_REG_GRP_GPIO] = {
+				.base = 0xC000,
+				.num_row = 1,
+				.num_col = 3,
+			},
+			[IQS7222_REG_GRP_SYS] = {
+				.base = IQS7222_SYS_SETUP,
+				.num_row = 1,
+				.num_col = 13,
+			},
+		},
+	},
+	{
+		.prod_num = IQS7222_PROD_NUM_B,
+		.fw_major = 1,
+		.fw_minor = 43,
+		.event_offset = 10,
+		.comms_offset = 11,
+		.reg_grps = {
+			[IQS7222_REG_GRP_STAT] = {
+				.base = IQS7222_SYS_STATUS,
+				.num_row = 1,
+				.num_col = 6,
+			},
+			[IQS7222_REG_GRP_CYCLE] = {
+				.base = 0x8000,
+				.num_row = 10,
+				.num_col = 2,
+			},
+			[IQS7222_REG_GRP_GLBL] = {
+				.base = 0x8A00,
+				.num_row = 1,
+				.num_col = 3,
+			},
+			[IQS7222_REG_GRP_BTN] = {
+				.base = 0x9000,
+				.num_row = 20,
+				.num_col = 2,
+			},
+			[IQS7222_REG_GRP_CHAN] = {
+				.base = 0xB000,
+				.num_row = 20,
+				.num_col = 4,
+			},
+			[IQS7222_REG_GRP_FILT] = {
+				.base = 0xC400,
+				.num_row = 1,
+				.num_col = 2,
+			},
+			[IQS7222_REG_GRP_SYS] = {
+				.base = IQS7222_SYS_SETUP,
+				.num_row = 1,
+				.num_col = 13,
+			},
+		},
+	},
+	{
+		.prod_num = IQS7222_PROD_NUM_B,
+		.fw_major = 1,
+		.fw_minor = 27,
+		.reg_grps = {
+			[IQS7222_REG_GRP_STAT] = {
+				.base = IQS7222_SYS_STATUS,
+				.num_row = 1,
+				.num_col = 6,
+			},
+			[IQS7222_REG_GRP_CYCLE] = {
+				.base = 0x8000,
+				.num_row = 10,
+				.num_col = 2,
+			},
+			[IQS7222_REG_GRP_GLBL] = {
+				.base = 0x8A00,
+				.num_row = 1,
+				.num_col = 3,
+			},
+			[IQS7222_REG_GRP_BTN] = {
+				.base = 0x9000,
+				.num_row = 20,
+				.num_col = 2,
+			},
+			[IQS7222_REG_GRP_CHAN] = {
+				.base = 0xB000,
+				.num_row = 20,
+				.num_col = 4,
+			},
+			[IQS7222_REG_GRP_FILT] = {
+				.base = 0xC400,
+				.num_row = 1,
+				.num_col = 2,
+			},
+			[IQS7222_REG_GRP_SYS] = {
+				.base = IQS7222_SYS_SETUP,
+				.num_row = 1,
+				.num_col = 10,
+			},
+		},
+	},
+	{
+		.prod_num = IQS7222_PROD_NUM_C,
+		.fw_major = 2,
+		.fw_minor = 6,
+		.sldr_res = U16_MAX,
+		.touch_link = 1686,
+		.wheel_enable = BIT(3),
+		.event_offset = 9,
+		.comms_offset = 10,
+		.reg_grps = {
+			[IQS7222_REG_GRP_STAT] = {
+				.base = IQS7222_SYS_STATUS,
+				.num_row = 1,
+				.num_col = 6,
+			},
+			[IQS7222_REG_GRP_CYCLE] = {
+				.base = 0x8000,
+				.num_row = 5,
+				.num_col = 3,
+			},
+			[IQS7222_REG_GRP_GLBL] = {
+				.base = 0x8500,
+				.num_row = 1,
+				.num_col = 3,
+			},
+			[IQS7222_REG_GRP_BTN] = {
+				.base = 0x9000,
+				.num_row = 10,
+				.num_col = 3,
+			},
+			[IQS7222_REG_GRP_CHAN] = {
+				.base = 0xA000,
+				.num_row = 10,
+				.num_col = 6,
+			},
+			[IQS7222_REG_GRP_FILT] = {
+				.base = 0xAA00,
+				.num_row = 1,
+				.num_col = 2,
+			},
+			[IQS7222_REG_GRP_SLDR] = {
+				.base = 0xB000,
+				.num_row = 2,
+				.num_col = 10,
+			},
+			[IQS7222_REG_GRP_GPIO] = {
+				.base = 0xC000,
+				.num_row = 3,
+				.num_col = 3,
+			},
+			[IQS7222_REG_GRP_SYS] = {
+				.base = IQS7222_SYS_SETUP,
+				.num_row = 1,
+				.num_col = 12,
+			},
+		},
+	},
+	{
+		.prod_num = IQS7222_PROD_NUM_C,
+		.fw_major = 1,
+		.fw_minor = 13,
+		.sldr_res = U16_MAX,
+		.touch_link = 1674,
+		.wheel_enable = BIT(3),
+		.event_offset = 9,
+		.comms_offset = 10,
+		.reg_grps = {
+			[IQS7222_REG_GRP_STAT] = {
+				.base = IQS7222_SYS_STATUS,
+				.num_row = 1,
+				.num_col = 6,
+			},
+			[IQS7222_REG_GRP_CYCLE] = {
+				.base = 0x8000,
+				.num_row = 5,
+				.num_col = 3,
+			},
+			[IQS7222_REG_GRP_GLBL] = {
+				.base = 0x8500,
+				.num_row = 1,
+				.num_col = 3,
+			},
+			[IQS7222_REG_GRP_BTN] = {
+				.base = 0x9000,
+				.num_row = 10,
+				.num_col = 3,
+			},
+			[IQS7222_REG_GRP_CHAN] = {
+				.base = 0xA000,
+				.num_row = 10,
+				.num_col = 6,
+			},
+			[IQS7222_REG_GRP_FILT] = {
+				.base = 0xAA00,
+				.num_row = 1,
+				.num_col = 2,
+			},
+			[IQS7222_REG_GRP_SLDR] = {
+				.base = 0xB000,
+				.num_row = 2,
+				.num_col = 10,
+			},
+			[IQS7222_REG_GRP_GPIO] = {
+				.base = 0xC000,
+				.num_row = 1,
+				.num_col = 3,
+			},
+			[IQS7222_REG_GRP_SYS] = {
+				.base = IQS7222_SYS_SETUP,
+				.num_row = 1,
+				.num_col = 11,
+			},
+		},
+	},
+};
+
+struct iqs7222_prop_desc {
+	const char *name;
+	enum iqs7222_reg_grp_id reg_grp;
+	enum iqs7222_reg_key_id reg_key;
+	int reg_offset;
+	int reg_shift;
+	int reg_width;
+	int val_pitch;
+	int val_min;
+	int val_max;
+	bool invert;
+	const char *label;
+};
+
+static const struct iqs7222_prop_desc iqs7222_props[] = {
+	{
+		.name = "azoteq,conv-period",
+		.reg_grp = IQS7222_REG_GRP_CYCLE,
+		.reg_offset = 0,
+		.reg_shift = 8,
+		.reg_width = 8,
+		.label = "conversion period",
+	},
+	{
+		.name = "azoteq,conv-frac",
+		.reg_grp = IQS7222_REG_GRP_CYCLE,
+		.reg_offset = 0,
+		.reg_shift = 0,
+		.reg_width = 8,
+		.label = "conversion frequency fractional divider",
+	},
+	{
+		.name = "azoteq,rx-float-inactive",
+		.reg_grp = IQS7222_REG_GRP_CYCLE,
+		.reg_offset = 1,
+		.reg_shift = 6,
+		.reg_width = 1,
+		.invert = true,
+	},
+	{
+		.name = "azoteq,dead-time-enable",
+		.reg_grp = IQS7222_REG_GRP_CYCLE,
+		.reg_offset = 1,
+		.reg_shift = 5,
+		.reg_width = 1,
+	},
+	{
+		.name = "azoteq,tx-freq-fosc",
+		.reg_grp = IQS7222_REG_GRP_CYCLE,
+		.reg_offset = 1,
+		.reg_shift = 4,
+		.reg_width = 1,
+	},
+	{
+		.name = "azoteq,vbias-enable",
+		.reg_grp = IQS7222_REG_GRP_CYCLE,
+		.reg_offset = 1,
+		.reg_shift = 3,
+		.reg_width = 1,
+	},
+	{
+		.name = "azoteq,sense-mode",
+		.reg_grp = IQS7222_REG_GRP_CYCLE,
+		.reg_offset = 1,
+		.reg_shift = 0,
+		.reg_width = 3,
+		.val_max = 3,
+		.label = "sensing mode",
+	},
+	{
+		.name = "azoteq,iref-enable",
+		.reg_grp = IQS7222_REG_GRP_CYCLE,
+		.reg_offset = 2,
+		.reg_shift = 10,
+		.reg_width = 1,
+	},
+	{
+		.name = "azoteq,iref-level",
+		.reg_grp = IQS7222_REG_GRP_CYCLE,
+		.reg_offset = 2,
+		.reg_shift = 4,
+		.reg_width = 4,
+		.label = "current reference level",
+	},
+	{
+		.name = "azoteq,iref-trim",
+		.reg_grp = IQS7222_REG_GRP_CYCLE,
+		.reg_offset = 2,
+		.reg_shift = 0,
+		.reg_width = 4,
+		.label = "current reference trim",
+	},
+	{
+		.name = "azoteq,max-counts",
+		.reg_grp = IQS7222_REG_GRP_GLBL,
+		.reg_offset = 0,
+		.reg_shift = 13,
+		.reg_width = 2,
+		.label = "maximum counts",
+	},
+	{
+		.name = "azoteq,auto-mode",
+		.reg_grp = IQS7222_REG_GRP_GLBL,
+		.reg_offset = 0,
+		.reg_shift = 2,
+		.reg_width = 2,
+		.label = "number of conversions",
+	},
+	{
+		.name = "azoteq,ati-frac-div-fine",
+		.reg_grp = IQS7222_REG_GRP_GLBL,
+		.reg_offset = 1,
+		.reg_shift = 9,
+		.reg_width = 5,
+		.label = "ATI fine fractional divider",
+	},
+	{
+		.name = "azoteq,ati-frac-div-coarse",
+		.reg_grp = IQS7222_REG_GRP_GLBL,
+		.reg_offset = 1,
+		.reg_shift = 0,
+		.reg_width = 5,
+		.label = "ATI coarse fractional divider",
+	},
+	{
+		.name = "azoteq,ati-comp-select",
+		.reg_grp = IQS7222_REG_GRP_GLBL,
+		.reg_offset = 2,
+		.reg_shift = 0,
+		.reg_width = 10,
+		.label = "ATI compensation selection",
+	},
+	{
+		.name = "azoteq,ati-band",
+		.reg_grp = IQS7222_REG_GRP_CHAN,
+		.reg_offset = 0,
+		.reg_shift = 12,
+		.reg_width = 2,
+		.label = "ATI band",
+	},
+	{
+		.name = "azoteq,global-halt",
+		.reg_grp = IQS7222_REG_GRP_CHAN,
+		.reg_offset = 0,
+		.reg_shift = 11,
+		.reg_width = 1,
+	},
+	{
+		.name = "azoteq,invert-enable",
+		.reg_grp = IQS7222_REG_GRP_CHAN,
+		.reg_offset = 0,
+		.reg_shift = 10,
+		.reg_width = 1,
+	},
+	{
+		.name = "azoteq,dual-direction",
+		.reg_grp = IQS7222_REG_GRP_CHAN,
+		.reg_offset = 0,
+		.reg_shift = 9,
+		.reg_width = 1,
+	},
+	{
+		.name = "azoteq,samp-cap-double",
+		.reg_grp = IQS7222_REG_GRP_CHAN,
+		.reg_offset = 0,
+		.reg_shift = 3,
+		.reg_width = 1,
+	},
+	{
+		.name = "azoteq,vref-half",
+		.reg_grp = IQS7222_REG_GRP_CHAN,
+		.reg_offset = 0,
+		.reg_shift = 2,
+		.reg_width = 1,
+	},
+	{
+		.name = "azoteq,proj-bias",
+		.reg_grp = IQS7222_REG_GRP_CHAN,
+		.reg_offset = 0,
+		.reg_shift = 0,
+		.reg_width = 2,
+		.label = "projected bias current",
+	},
+	{
+		.name = "azoteq,ati-target",
+		.reg_grp = IQS7222_REG_GRP_CHAN,
+		.reg_offset = 1,
+		.reg_shift = 8,
+		.reg_width = 8,
+		.val_pitch = 8,
+		.label = "ATI target",
+	},
+	{
+		.name = "azoteq,ati-base",
+		.reg_grp = IQS7222_REG_GRP_CHAN,
+		.reg_offset = 1,
+		.reg_shift = 3,
+		.reg_width = 5,
+		.val_pitch = 16,
+		.label = "ATI base",
+	},
+	{
+		.name = "azoteq,ati-mode",
+		.reg_grp = IQS7222_REG_GRP_CHAN,
+		.reg_offset = 1,
+		.reg_shift = 0,
+		.reg_width = 3,
+		.val_max = 5,
+		.label = "ATI mode",
+	},
+	{
+		.name = "azoteq,ati-frac-div-fine",
+		.reg_grp = IQS7222_REG_GRP_CHAN,
+		.reg_offset = 2,
+		.reg_shift = 9,
+		.reg_width = 5,
+		.label = "ATI fine fractional divider",
+	},
+	{
+		.name = "azoteq,ati-frac-mult-coarse",
+		.reg_grp = IQS7222_REG_GRP_CHAN,
+		.reg_offset = 2,
+		.reg_shift = 5,
+		.reg_width = 4,
+		.label = "ATI coarse fractional multiplier",
+	},
+	{
+		.name = "azoteq,ati-frac-div-coarse",
+		.reg_grp = IQS7222_REG_GRP_CHAN,
+		.reg_offset = 2,
+		.reg_shift = 0,
+		.reg_width = 5,
+		.label = "ATI coarse fractional divider",
+	},
+	{
+		.name = "azoteq,ati-comp-div",
+		.reg_grp = IQS7222_REG_GRP_CHAN,
+		.reg_offset = 3,
+		.reg_shift = 11,
+		.reg_width = 5,
+		.label = "ATI compensation divider",
+	},
+	{
+		.name = "azoteq,ati-comp-select",
+		.reg_grp = IQS7222_REG_GRP_CHAN,
+		.reg_offset = 3,
+		.reg_shift = 0,
+		.reg_width = 10,
+		.label = "ATI compensation selection",
+	},
+	{
+		.name = "azoteq,debounce-exit",
+		.reg_grp = IQS7222_REG_GRP_BTN,
+		.reg_key = IQS7222_REG_KEY_DEBOUNCE,
+		.reg_offset = 0,
+		.reg_shift = 12,
+		.reg_width = 4,
+		.label = "debounce exit factor",
+	},
+	{
+		.name = "azoteq,debounce-enter",
+		.reg_grp = IQS7222_REG_GRP_BTN,
+		.reg_key = IQS7222_REG_KEY_DEBOUNCE,
+		.reg_offset = 0,
+		.reg_shift = 8,
+		.reg_width = 4,
+		.label = "debounce entrance factor",
+	},
+	{
+		.name = "azoteq,thresh",
+		.reg_grp = IQS7222_REG_GRP_BTN,
+		.reg_key = IQS7222_REG_KEY_PROX,
+		.reg_offset = 0,
+		.reg_shift = 0,
+		.reg_width = 8,
+		.val_max = 127,
+		.label = "threshold",
+	},
+	{
+		.name = "azoteq,thresh",
+		.reg_grp = IQS7222_REG_GRP_BTN,
+		.reg_key = IQS7222_REG_KEY_TOUCH,
+		.reg_offset = 1,
+		.reg_shift = 0,
+		.reg_width = 8,
+		.label = "threshold",
+	},
+	{
+		.name = "azoteq,hyst",
+		.reg_grp = IQS7222_REG_GRP_BTN,
+		.reg_key = IQS7222_REG_KEY_TOUCH,
+		.reg_offset = 1,
+		.reg_shift = 8,
+		.reg_width = 8,
+		.label = "hysteresis",
+	},
+	{
+		.name = "azoteq,lta-beta-lp",
+		.reg_grp = IQS7222_REG_GRP_FILT,
+		.reg_offset = 0,
+		.reg_shift = 12,
+		.reg_width = 4,
+		.label = "low-power mode long-term average beta",
+	},
+	{
+		.name = "azoteq,lta-beta-np",
+		.reg_grp = IQS7222_REG_GRP_FILT,
+		.reg_offset = 0,
+		.reg_shift = 8,
+		.reg_width = 4,
+		.label = "normal-power mode long-term average beta",
+	},
+	{
+		.name = "azoteq,counts-beta-lp",
+		.reg_grp = IQS7222_REG_GRP_FILT,
+		.reg_offset = 0,
+		.reg_shift = 4,
+		.reg_width = 4,
+		.label = "low-power mode counts beta",
+	},
+	{
+		.name = "azoteq,counts-beta-np",
+		.reg_grp = IQS7222_REG_GRP_FILT,
+		.reg_offset = 0,
+		.reg_shift = 0,
+		.reg_width = 4,
+		.label = "normal-power mode counts beta",
+	},
+	{
+		.name = "azoteq,lta-fast-beta-lp",
+		.reg_grp = IQS7222_REG_GRP_FILT,
+		.reg_offset = 1,
+		.reg_shift = 4,
+		.reg_width = 4,
+		.label = "low-power mode long-term average fast beta",
+	},
+	{
+		.name = "azoteq,lta-fast-beta-np",
+		.reg_grp = IQS7222_REG_GRP_FILT,
+		.reg_offset = 1,
+		.reg_shift = 0,
+		.reg_width = 4,
+		.label = "normal-power mode long-term average fast beta",
+	},
+	{
+		.name = "azoteq,lower-cal",
+		.reg_grp = IQS7222_REG_GRP_SLDR,
+		.reg_offset = 0,
+		.reg_shift = 8,
+		.reg_width = 8,
+		.label = "lower calibration",
+	},
+	{
+		.name = "azoteq,static-beta",
+		.reg_grp = IQS7222_REG_GRP_SLDR,
+		.reg_key = IQS7222_REG_KEY_NO_WHEEL,
+		.reg_offset = 0,
+		.reg_shift = 6,
+		.reg_width = 1,
+	},
+	{
+		.name = "azoteq,bottom-beta",
+		.reg_grp = IQS7222_REG_GRP_SLDR,
+		.reg_key = IQS7222_REG_KEY_NO_WHEEL,
+		.reg_offset = 0,
+		.reg_shift = 3,
+		.reg_width = 3,
+		.label = "bottom beta",
+	},
+	{
+		.name = "azoteq,static-beta",
+		.reg_grp = IQS7222_REG_GRP_SLDR,
+		.reg_key = IQS7222_REG_KEY_WHEEL,
+		.reg_offset = 0,
+		.reg_shift = 7,
+		.reg_width = 1,
+	},
+	{
+		.name = "azoteq,bottom-beta",
+		.reg_grp = IQS7222_REG_GRP_SLDR,
+		.reg_key = IQS7222_REG_KEY_WHEEL,
+		.reg_offset = 0,
+		.reg_shift = 4,
+		.reg_width = 3,
+		.label = "bottom beta",
+	},
+	{
+		.name = "azoteq,bottom-speed",
+		.reg_grp = IQS7222_REG_GRP_SLDR,
+		.reg_offset = 1,
+		.reg_shift = 8,
+		.reg_width = 8,
+		.label = "bottom speed",
+	},
+	{
+		.name = "azoteq,upper-cal",
+		.reg_grp = IQS7222_REG_GRP_SLDR,
+		.reg_offset = 1,
+		.reg_shift = 0,
+		.reg_width = 8,
+		.label = "upper calibration",
+	},
+	{
+		.name = "azoteq,gesture-max-ms",
+		.reg_grp = IQS7222_REG_GRP_SLDR,
+		.reg_key = IQS7222_REG_KEY_TAP,
+		.reg_offset = 9,
+		.reg_shift = 8,
+		.reg_width = 8,
+		.val_pitch = 16,
+		.label = "maximum gesture time",
+	},
+	{
+		.name = "azoteq,gesture-max-ms",
+		.reg_grp = IQS7222_REG_GRP_SLDR,
+		.reg_key = IQS7222_REG_KEY_TAP_LEGACY,
+		.reg_offset = 9,
+		.reg_shift = 8,
+		.reg_width = 8,
+		.val_pitch = 4,
+		.label = "maximum gesture time",
+	},
+	{
+		.name = "azoteq,gesture-min-ms",
+		.reg_grp = IQS7222_REG_GRP_SLDR,
+		.reg_key = IQS7222_REG_KEY_TAP,
+		.reg_offset = 9,
+		.reg_shift = 3,
+		.reg_width = 5,
+		.val_pitch = 16,
+		.label = "minimum gesture time",
+	},
+	{
+		.name = "azoteq,gesture-min-ms",
+		.reg_grp = IQS7222_REG_GRP_SLDR,
+		.reg_key = IQS7222_REG_KEY_TAP_LEGACY,
+		.reg_offset = 9,
+		.reg_shift = 3,
+		.reg_width = 5,
+		.val_pitch = 4,
+		.label = "minimum gesture time",
+	},
+	{
+		.name = "azoteq,gesture-dist",
+		.reg_grp = IQS7222_REG_GRP_SLDR,
+		.reg_key = IQS7222_REG_KEY_AXIAL,
+		.reg_offset = 10,
+		.reg_shift = 8,
+		.reg_width = 8,
+		.val_pitch = 16,
+		.label = "gesture distance",
+	},
+	{
+		.name = "azoteq,gesture-dist",
+		.reg_grp = IQS7222_REG_GRP_SLDR,
+		.reg_key = IQS7222_REG_KEY_AXIAL_LEGACY,
+		.reg_offset = 10,
+		.reg_shift = 8,
+		.reg_width = 8,
+		.val_pitch = 16,
+		.label = "gesture distance",
+	},
+	{
+		.name = "azoteq,gesture-max-ms",
+		.reg_grp = IQS7222_REG_GRP_SLDR,
+		.reg_key = IQS7222_REG_KEY_AXIAL,
+		.reg_offset = 10,
+		.reg_shift = 0,
+		.reg_width = 8,
+		.val_pitch = 16,
+		.label = "maximum gesture time",
+	},
+	{
+		.name = "azoteq,gesture-max-ms",
+		.reg_grp = IQS7222_REG_GRP_SLDR,
+		.reg_key = IQS7222_REG_KEY_AXIAL_LEGACY,
+		.reg_offset = 10,
+		.reg_shift = 0,
+		.reg_width = 8,
+		.val_pitch = 4,
+		.label = "maximum gesture time",
+	},
+	{
+		.name = "drive-open-drain",
+		.reg_grp = IQS7222_REG_GRP_GPIO,
+		.reg_offset = 0,
+		.reg_shift = 1,
+		.reg_width = 1,
+	},
+	{
+		.name = "azoteq,timeout-ati-ms",
+		.reg_grp = IQS7222_REG_GRP_SYS,
+		.reg_offset = 1,
+		.reg_shift = 0,
+		.reg_width = 16,
+		.val_pitch = 500,
+		.label = "ATI error timeout",
+	},
+	{
+		.name = "azoteq,rate-ati-ms",
+		.reg_grp = IQS7222_REG_GRP_SYS,
+		.reg_offset = 2,
+		.reg_shift = 0,
+		.reg_width = 16,
+		.label = "ATI report rate",
+	},
+	{
+		.name = "azoteq,timeout-np-ms",
+		.reg_grp = IQS7222_REG_GRP_SYS,
+		.reg_offset = 3,
+		.reg_shift = 0,
+		.reg_width = 16,
+		.label = "normal-power mode timeout",
+	},
+	{
+		.name = "azoteq,rate-np-ms",
+		.reg_grp = IQS7222_REG_GRP_SYS,
+		.reg_offset = 4,
+		.reg_shift = 0,
+		.reg_width = 16,
+		.val_max = 3000,
+		.label = "normal-power mode report rate",
+	},
+	{
+		.name = "azoteq,timeout-lp-ms",
+		.reg_grp = IQS7222_REG_GRP_SYS,
+		.reg_offset = 5,
+		.reg_shift = 0,
+		.reg_width = 16,
+		.label = "low-power mode timeout",
+	},
+	{
+		.name = "azoteq,rate-lp-ms",
+		.reg_grp = IQS7222_REG_GRP_SYS,
+		.reg_offset = 6,
+		.reg_shift = 0,
+		.reg_width = 16,
+		.val_max = 3000,
+		.label = "low-power mode report rate",
+	},
+	{
+		.name = "azoteq,timeout-ulp-ms",
+		.reg_grp = IQS7222_REG_GRP_SYS,
+		.reg_offset = 7,
+		.reg_shift = 0,
+		.reg_width = 16,
+		.label = "ultra-low-power mode timeout",
+	},
+	{
+		.name = "azoteq,rate-ulp-ms",
+		.reg_grp = IQS7222_REG_GRP_SYS,
+		.reg_offset = 8,
+		.reg_shift = 0,
+		.reg_width = 16,
+		.val_max = 3000,
+		.label = "ultra-low-power mode report rate",
+	},
+};
+
+struct iqs7222_private {
+	const struct iqs7222_dev_desc *dev_desc;
+	struct gpio_desc *reset_gpio;
+	struct gpio_desc *irq_gpio;
+	struct i2c_client *client;
+	struct input_dev *keypad;
+	unsigned int kp_type[IQS7222_MAX_CHAN][ARRAY_SIZE(iqs7222_kp_events)];
+	unsigned int kp_code[IQS7222_MAX_CHAN][ARRAY_SIZE(iqs7222_kp_events)];
+	unsigned int sl_code[IQS7222_MAX_SLDR][ARRAY_SIZE(iqs7222_sl_events)];
+	unsigned int sl_axis[IQS7222_MAX_SLDR];
+	u16 cycle_setup[IQS7222_MAX_CHAN / 2][IQS7222_MAX_COLS_CYCLE];
+	u16 glbl_setup[IQS7222_MAX_COLS_GLBL];
+	u16 btn_setup[IQS7222_MAX_CHAN][IQS7222_MAX_COLS_BTN];
+	u16 chan_setup[IQS7222_MAX_CHAN][IQS7222_MAX_COLS_CHAN];
+	u16 filt_setup[IQS7222_MAX_COLS_FILT];
+	u16 sldr_setup[IQS7222_MAX_SLDR][IQS7222_MAX_COLS_SLDR];
+	u16 gpio_setup[ARRAY_SIZE(iqs7222_gpio_links)][IQS7222_MAX_COLS_GPIO];
+	u16 sys_setup[IQS7222_MAX_COLS_SYS];
+};
+
+static u16 *iqs7222_setup(struct iqs7222_private *iqs7222,
+			  enum iqs7222_reg_grp_id reg_grp, int row)
+{
+	switch (reg_grp) {
+	case IQS7222_REG_GRP_CYCLE:
+		return iqs7222->cycle_setup[row];
+
+	case IQS7222_REG_GRP_GLBL:
+		return iqs7222->glbl_setup;
+
+	case IQS7222_REG_GRP_BTN:
+		return iqs7222->btn_setup[row];
+
+	case IQS7222_REG_GRP_CHAN:
+		return iqs7222->chan_setup[row];
+
+	case IQS7222_REG_GRP_FILT:
+		return iqs7222->filt_setup;
+
+	case IQS7222_REG_GRP_SLDR:
+		return iqs7222->sldr_setup[row];
+
+	case IQS7222_REG_GRP_GPIO:
+		return iqs7222->gpio_setup[row];
+
+	case IQS7222_REG_GRP_SYS:
+		return iqs7222->sys_setup;
+
+	default:
+		return NULL;
+	}
+}
+
+static int iqs7222_irq_poll(struct iqs7222_private *iqs7222, u16 timeout_ms)
+{
+	ktime_t irq_timeout = ktime_add_ms(ktime_get(), timeout_ms);
+	int ret;
+
+	do {
+		usleep_range(1000, 1100);
+
+		ret = gpiod_get_value_cansleep(iqs7222->irq_gpio);
+		if (ret < 0)
+			return ret;
+		else if (ret > 0)
+			return 0;
+	} while (ktime_compare(ktime_get(), irq_timeout) < 0);
+
+	return -EBUSY;
+}
+
+static int iqs7222_hard_reset(struct iqs7222_private *iqs7222)
+{
+	struct i2c_client *client = iqs7222->client;
+	int error;
+
+	if (!iqs7222->reset_gpio)
+		return 0;
+
+	gpiod_set_value_cansleep(iqs7222->reset_gpio, 1);
+	usleep_range(1000, 1100);
+
+	gpiod_set_value_cansleep(iqs7222->reset_gpio, 0);
+
+	error = iqs7222_irq_poll(iqs7222, IQS7222_RESET_TIMEOUT_MS);
+	if (error)
+		dev_err(&client->dev, "Failed to reset device: %d\n", error);
+
+	return error;
+}
+
+static int iqs7222_force_comms(struct iqs7222_private *iqs7222)
+{
+	u8 msg_buf[] = { 0xFF, };
+	int ret;
+
+	/*
+	 * The device cannot communicate until it asserts its interrupt (RDY)
+	 * pin. Attempts to do so while RDY is deasserted return an ACK; how-
+	 * ever all write data is ignored, and all read data returns 0xEE.
+	 *
+	 * Unsolicited communication must be preceded by a special force com-
+	 * munication command, after which the device eventually asserts its
+	 * RDY pin and agrees to communicate.
+	 *
+	 * Regardless of whether communication is forced or the result of an
+	 * interrupt, the device automatically deasserts its RDY pin once it
+	 * detects an I2C stop condition, or a timeout expires.
+	 */
+	ret = gpiod_get_value_cansleep(iqs7222->irq_gpio);
+	if (ret < 0)
+		return ret;
+	else if (ret > 0)
+		return 0;
+
+	ret = i2c_master_send(iqs7222->client, msg_buf, sizeof(msg_buf));
+	if (ret < (int)sizeof(msg_buf)) {
+		if (ret >= 0)
+			ret = -EIO;
+
+		/*
+		 * The datasheet states that the host must wait to retry any
+		 * failed attempt to communicate over I2C.
+		 */
+		msleep(IQS7222_COMMS_RETRY_MS);
+		return ret;
+	}
+
+	return iqs7222_irq_poll(iqs7222, IQS7222_COMMS_TIMEOUT_MS);
+}
+
+static int iqs7222_read_burst(struct iqs7222_private *iqs7222,
+			      u16 reg, void *val, u16 num_val)
+{
+	u8 reg_buf[sizeof(__be16)];
+	int ret, i;
+	struct i2c_client *client = iqs7222->client;
+	struct i2c_msg msg[] = {
+		{
+			.addr = client->addr,
+			.flags = 0,
+			.len = reg > U8_MAX ? sizeof(reg) : sizeof(u8),
+			.buf = reg_buf,
+		},
+		{
+			.addr = client->addr,
+			.flags = I2C_M_RD,
+			.len = num_val * sizeof(__le16),
+			.buf = (u8 *)val,
+		},
+	};
+
+	if (reg > U8_MAX)
+		put_unaligned_be16(reg, reg_buf);
+	else
+		*reg_buf = (u8)reg;
+
+	/*
+	 * The following loop protects against an edge case in which the RDY
+	 * pin is automatically deasserted just as the read is initiated. In
+	 * that case, the read must be retried using forced communication.
+	 */
+	for (i = 0; i < IQS7222_NUM_RETRIES; i++) {
+		ret = iqs7222_force_comms(iqs7222);
+		if (ret < 0)
+			continue;
+
+		ret = i2c_transfer(client->adapter, msg, ARRAY_SIZE(msg));
+		if (ret < (int)ARRAY_SIZE(msg)) {
+			if (ret >= 0)
+				ret = -EIO;
+
+			msleep(IQS7222_COMMS_RETRY_MS);
+			continue;
+		}
+
+		if (get_unaligned_le16(msg[1].buf) == IQS7222_COMMS_ERROR) {
+			ret = -ENODATA;
+			continue;
+		}
+
+		ret = 0;
+		break;
+	}
+
+	/*
+	 * The following delay ensures the device has deasserted the RDY pin
+	 * following the I2C stop condition.
+	 */
+	usleep_range(50, 100);
+
+	if (ret < 0)
+		dev_err(&client->dev,
+			"Failed to read from address 0x%04X: %d\n", reg, ret);
+
+	return ret;
+}
+
+static int iqs7222_read_word(struct iqs7222_private *iqs7222, u16 reg, u16 *val)
+{
+	__le16 val_buf;
+	int error;
+
+	error = iqs7222_read_burst(iqs7222, reg, &val_buf, 1);
+	if (error)
+		return error;
+
+	*val = le16_to_cpu(val_buf);
+
+	return 0;
+}
+
+static int iqs7222_write_burst(struct iqs7222_private *iqs7222,
+			       u16 reg, const void *val, u16 num_val)
+{
+	int reg_len = reg > U8_MAX ? sizeof(reg) : sizeof(u8);
+	int val_len = num_val * sizeof(__le16);
+	int msg_len = reg_len + val_len;
+	int ret, i;
+	struct i2c_client *client = iqs7222->client;
+	u8 *msg_buf;
+
+	msg_buf = kzalloc(msg_len, GFP_KERNEL);
+	if (!msg_buf)
+		return -ENOMEM;
+
+	if (reg > U8_MAX)
+		put_unaligned_be16(reg, msg_buf);
+	else
+		*msg_buf = (u8)reg;
+
+	memcpy(msg_buf + reg_len, val, val_len);
+
+	/*
+	 * The following loop protects against an edge case in which the RDY
+	 * pin is automatically asserted just before the force communication
+	 * command is sent.
+	 *
+	 * In that case, the subsequent I2C stop condition tricks the device
+	 * into preemptively deasserting the RDY pin and the command must be
+	 * sent again.
+	 */
+	for (i = 0; i < IQS7222_NUM_RETRIES; i++) {
+		ret = iqs7222_force_comms(iqs7222);
+		if (ret < 0)
+			continue;
+
+		ret = i2c_master_send(client, msg_buf, msg_len);
+		if (ret < msg_len) {
+			if (ret >= 0)
+				ret = -EIO;
+
+			msleep(IQS7222_COMMS_RETRY_MS);
+			continue;
+		}
+
+		ret = 0;
+		break;
+	}
+
+	kfree(msg_buf);
+
+	usleep_range(50, 100);
+
+	if (ret < 0)
+		dev_err(&client->dev,
+			"Failed to write to address 0x%04X: %d\n", reg, ret);
+
+	return ret;
+}
+
+static int iqs7222_write_word(struct iqs7222_private *iqs7222, u16 reg, u16 val)
+{
+	__le16 val_buf = cpu_to_le16(val);
+
+	return iqs7222_write_burst(iqs7222, reg, &val_buf, 1);
+}
+
+static int iqs7222_ati_trigger(struct iqs7222_private *iqs7222)
+{
+	struct i2c_client *client = iqs7222->client;
+	ktime_t ati_timeout;
+	u16 sys_status = 0;
+	u16 sys_setup;
+	int error, i;
+
+	/*
+	 * The reserved fields of the system setup register may have changed
+	 * as a result of other registers having been written. As such, read
+	 * the register's latest value to avoid unexpected behavior when the
+	 * register is written in the loop that follows.
+	 */
+	error = iqs7222_read_word(iqs7222, IQS7222_SYS_SETUP, &sys_setup);
+	if (error)
+		return error;
+
+	for (i = 0; i < IQS7222_NUM_RETRIES; i++) {
+		/*
+		 * Trigger ATI from streaming and normal-power modes so that
+		 * the RDY pin continues to be asserted during ATI.
+		 */
+		error = iqs7222_write_word(iqs7222, IQS7222_SYS_SETUP,
+					   sys_setup |
+					   IQS7222_SYS_SETUP_REDO_ATI);
+		if (error)
+			return error;
+
+		ati_timeout = ktime_add_ms(ktime_get(), IQS7222_ATI_TIMEOUT_MS);
+
+		do {
+			error = iqs7222_irq_poll(iqs7222,
+						 IQS7222_COMMS_TIMEOUT_MS);
+			if (error)
+				continue;
+
+			error = iqs7222_read_word(iqs7222, IQS7222_SYS_STATUS,
+						  &sys_status);
+			if (error)
+				return error;
+
+			if (sys_status & IQS7222_SYS_STATUS_RESET)
+				return 0;
+
+			if (sys_status & IQS7222_SYS_STATUS_ATI_ERROR)
+				break;
+
+			if (sys_status & IQS7222_SYS_STATUS_ATI_ACTIVE)
+				continue;
+
+			/*
+			 * Use stream-in-touch mode if either slider reports
+			 * absolute position.
+			 */
+			sys_setup |= test_bit(EV_ABS, iqs7222->keypad->evbit)
+				   ? IQS7222_SYS_SETUP_INTF_MODE_TOUCH
+				   : IQS7222_SYS_SETUP_INTF_MODE_EVENT;
+			sys_setup |= IQS7222_SYS_SETUP_PWR_MODE_AUTO;
+
+			return iqs7222_write_word(iqs7222, IQS7222_SYS_SETUP,
+						  sys_setup);
+		} while (ktime_compare(ktime_get(), ati_timeout) < 0);
+
+		dev_err(&client->dev,
+			"ATI attempt %d of %d failed with status 0x%02X, %s\n",
+			i + 1, IQS7222_NUM_RETRIES, (u8)sys_status,
+			i + 1 < IQS7222_NUM_RETRIES ? "retrying" : "stopping");
+	}
+
+	return -ETIMEDOUT;
+}
+
+static int iqs7222_dev_init(struct iqs7222_private *iqs7222, int dir)
+{
+	const struct iqs7222_dev_desc *dev_desc = iqs7222->dev_desc;
+	int comms_offset = dev_desc->comms_offset;
+	int error, i, j, k;
+
+	/*
+	 * Acknowledge reset before writing any registers in case the device
+	 * suffers a spurious reset during initialization. Because this step
+	 * may change the reserved fields of the second filter beta register,
+	 * its cache must be updated.
+	 *
+	 * Writing the second filter beta register, in turn, may clobber the
+	 * system status register. As such, the filter beta register pair is
+	 * written first to protect against this hazard.
+	 */
+	if (dir == WRITE) {
+		u16 reg = dev_desc->reg_grps[IQS7222_REG_GRP_FILT].base + 1;
+		u16 filt_setup;
+
+		error = iqs7222_write_word(iqs7222, IQS7222_SYS_SETUP,
+					   iqs7222->sys_setup[0] |
+					   IQS7222_SYS_SETUP_ACK_RESET);
+		if (error)
+			return error;
+
+		error = iqs7222_read_word(iqs7222, reg, &filt_setup);
+		if (error)
+			return error;
+
+		iqs7222->filt_setup[1] &= GENMASK(7, 0);
+		iqs7222->filt_setup[1] |= (filt_setup & ~GENMASK(7, 0));
+	}
+
+	/*
+	 * Take advantage of the stop-bit disable function, if available, to
+	 * save the trouble of having to reopen a communication window after
+	 * each burst read or write.
+	 */
+	if (comms_offset) {
+		u16 comms_setup;
+
+		error = iqs7222_read_word(iqs7222,
+					  IQS7222_SYS_SETUP + comms_offset,
+					  &comms_setup);
+		if (error)
+			return error;
+
+		error = iqs7222_write_word(iqs7222,
+					   IQS7222_SYS_SETUP + comms_offset,
+					   comms_setup | IQS7222_COMMS_HOLD);
+		if (error)
+			return error;
+	}
+
+	for (i = 0; i < IQS7222_NUM_REG_GRPS; i++) {
+		int num_row = dev_desc->reg_grps[i].num_row;
+		int num_col = dev_desc->reg_grps[i].num_col;
+		u16 reg = dev_desc->reg_grps[i].base;
+		__le16 *val_buf;
+		u16 *val;
+
+		if (!num_col)
+			continue;
+
+		val = iqs7222_setup(iqs7222, i, 0);
+		if (!val)
+			continue;
+
+		val_buf = kcalloc(num_col, sizeof(__le16), GFP_KERNEL);
+		if (!val_buf)
+			return -ENOMEM;
+
+		for (j = 0; j < num_row; j++) {
+			switch (dir) {
+			case READ:
+				error = iqs7222_read_burst(iqs7222, reg,
+							   val_buf, num_col);
+				for (k = 0; k < num_col; k++)
+					val[k] = le16_to_cpu(val_buf[k]);
+				break;
+
+			case WRITE:
+				for (k = 0; k < num_col; k++)
+					val_buf[k] = cpu_to_le16(val[k]);
+				error = iqs7222_write_burst(iqs7222, reg,
+							    val_buf, num_col);
+				break;
+
+			default:
+				error = -EINVAL;
+			}
+
+			if (error)
+				break;
+
+			reg += IQS7222_REG_OFFSET;
+			val += iqs7222_max_cols[i];
+		}
+
+		kfree(val_buf);
+
+		if (error)
+			return error;
+	}
+
+	if (comms_offset) {
+		u16 comms_setup;
+
+		error = iqs7222_read_word(iqs7222,
+					  IQS7222_SYS_SETUP + comms_offset,
+					  &comms_setup);
+		if (error)
+			return error;
+
+		error = iqs7222_write_word(iqs7222,
+					   IQS7222_SYS_SETUP + comms_offset,
+					   comms_setup & ~IQS7222_COMMS_HOLD);
+		if (error)
+			return error;
+	}
+
+	if (dir == READ) {
+		iqs7222->sys_setup[0] &= ~IQS7222_SYS_SETUP_INTF_MODE_MASK;
+		iqs7222->sys_setup[0] &= ~IQS7222_SYS_SETUP_PWR_MODE_MASK;
+		return 0;
+	}
+
+	return iqs7222_ati_trigger(iqs7222);
+}
+
+static int iqs7222_dev_info(struct iqs7222_private *iqs7222)
+{
+	struct i2c_client *client = iqs7222->client;
+	bool prod_num_valid = false;
+	__le16 dev_id[3];
+	int error, i;
+
+	error = iqs7222_read_burst(iqs7222, IQS7222_PROD_NUM, dev_id,
+				   ARRAY_SIZE(dev_id));
+	if (error)
+		return error;
+
+	for (i = 0; i < ARRAY_SIZE(iqs7222_devs); i++) {
+		if (le16_to_cpu(dev_id[0]) != iqs7222_devs[i].prod_num)
+			continue;
+
+		prod_num_valid = true;
+
+		if (le16_to_cpu(dev_id[1]) < iqs7222_devs[i].fw_major)
+			continue;
+
+		if (le16_to_cpu(dev_id[2]) < iqs7222_devs[i].fw_minor)
+			continue;
+
+		iqs7222->dev_desc = &iqs7222_devs[i];
+		return 0;
+	}
+
+	if (prod_num_valid)
+		dev_err(&client->dev, "Unsupported firmware revision: %u.%u\n",
+			le16_to_cpu(dev_id[1]), le16_to_cpu(dev_id[2]));
+	else
+		dev_err(&client->dev, "Unrecognized product number: %u\n",
+			le16_to_cpu(dev_id[0]));
+
+	return -EINVAL;
+}
+
+static int iqs7222_gpio_select(struct iqs7222_private *iqs7222,
+			       struct fwnode_handle *child_node,
+			       int child_enable, u16 child_link)
+{
+	const struct iqs7222_dev_desc *dev_desc = iqs7222->dev_desc;
+	struct i2c_client *client = iqs7222->client;
+	int num_gpio = dev_desc->reg_grps[IQS7222_REG_GRP_GPIO].num_row;
+	int error, count, i;
+	unsigned int gpio_sel[ARRAY_SIZE(iqs7222_gpio_links)];
+
+	if (!num_gpio)
+		return 0;
+
+	if (!fwnode_property_present(child_node, "azoteq,gpio-select"))
+		return 0;
+
+	count = fwnode_property_count_u32(child_node, "azoteq,gpio-select");
+	if (count > num_gpio) {
+		dev_err(&client->dev, "Invalid number of %s GPIOs\n",
+			fwnode_get_name(child_node));
+		return -EINVAL;
+	} else if (count < 0) {
+		dev_err(&client->dev, "Failed to count %s GPIOs: %d\n",
+			fwnode_get_name(child_node), count);
+		return count;
+	}
+
+	error = fwnode_property_read_u32_array(child_node,
+					       "azoteq,gpio-select",
+					       gpio_sel, count);
+	if (error) {
+		dev_err(&client->dev, "Failed to read %s GPIOs: %d\n",
+			fwnode_get_name(child_node), error);
+		return error;
+	}
+
+	for (i = 0; i < count; i++) {
+		u16 *gpio_setup;
+
+		if (gpio_sel[i] >= num_gpio) {
+			dev_err(&client->dev, "Invalid %s GPIO: %u\n",
+				fwnode_get_name(child_node), gpio_sel[i]);
+			return -EINVAL;
+		}
+
+		gpio_setup = iqs7222->gpio_setup[gpio_sel[i]];
+
+		if (gpio_setup[2] && child_link != gpio_setup[2]) {
+			dev_err(&client->dev,
+				"Conflicting GPIO %u event types\n",
+				gpio_sel[i]);
+			return -EINVAL;
+		}
+
+		gpio_setup[0] |= IQS7222_GPIO_SETUP_0_GPIO_EN;
+		gpio_setup[1] |= child_enable;
+		gpio_setup[2] = child_link;
+	}
+
+	return 0;
+}
+
+static int iqs7222_parse_props(struct iqs7222_private *iqs7222,
+			       struct fwnode_handle *reg_grp_node,
+			       int reg_grp_index,
+			       enum iqs7222_reg_grp_id reg_grp,
+			       enum iqs7222_reg_key_id reg_key)
+{
+	u16 *setup = iqs7222_setup(iqs7222, reg_grp, reg_grp_index);
+	struct i2c_client *client = iqs7222->client;
+	int i;
+
+	if (!setup)
+		return 0;
+
+	for (i = 0; i < ARRAY_SIZE(iqs7222_props); i++) {
+		const char *name = iqs7222_props[i].name;
+		int reg_offset = iqs7222_props[i].reg_offset;
+		int reg_shift = iqs7222_props[i].reg_shift;
+		int reg_width = iqs7222_props[i].reg_width;
+		int val_pitch = iqs7222_props[i].val_pitch ? : 1;
+		int val_min = iqs7222_props[i].val_min;
+		int val_max = iqs7222_props[i].val_max;
+		bool invert = iqs7222_props[i].invert;
+		const char *label = iqs7222_props[i].label ? : name;
+		unsigned int val;
+		int error;
+
+		if (iqs7222_props[i].reg_grp != reg_grp ||
+		    iqs7222_props[i].reg_key != reg_key)
+			continue;
+
+		/*
+		 * Boolean register fields are one bit wide; they are forcibly
+		 * reset to provide a means to undo changes by a bootloader if
+		 * necessary.
+		 *
+		 * Scalar fields, on the other hand, are left untouched unless
+		 * their corresponding properties are present.
+		 */
+		if (reg_width == 1) {
+			if (invert)
+				setup[reg_offset] |= BIT(reg_shift);
+			else
+				setup[reg_offset] &= ~BIT(reg_shift);
+		}
+
+		if (!fwnode_property_present(reg_grp_node, name))
+			continue;
+
+		if (reg_width == 1) {
+			if (invert)
+				setup[reg_offset] &= ~BIT(reg_shift);
+			else
+				setup[reg_offset] |= BIT(reg_shift);
+
+			continue;
+		}
+
+		error = fwnode_property_read_u32(reg_grp_node, name, &val);
+		if (error) {
+			dev_err(&client->dev, "Failed to read %s %s: %d\n",
+				fwnode_get_name(reg_grp_node), label, error);
+			return error;
+		}
+
+		if (!val_max)
+			val_max = GENMASK(reg_width - 1, 0) * val_pitch;
+
+		if (val < val_min || val > val_max) {
+			dev_err(&client->dev, "Invalid %s %s: %u\n",
+				fwnode_get_name(reg_grp_node), label, val);
+			return -EINVAL;
+		}
+
+		setup[reg_offset] &= ~GENMASK(reg_shift + reg_width - 1,
+					      reg_shift);
+		setup[reg_offset] |= (val / val_pitch << reg_shift);
+	}
+
+	return 0;
+}
+
+static int iqs7222_parse_event(struct iqs7222_private *iqs7222,
+			       struct fwnode_handle *event_node,
+			       int reg_grp_index,
+			       enum iqs7222_reg_grp_id reg_grp,
+			       enum iqs7222_reg_key_id reg_key,
+			       u16 event_enable, u16 event_link,
+			       unsigned int *event_type,
+			       unsigned int *event_code)
+{
+	struct i2c_client *client = iqs7222->client;
+	int error;
+
+	error = iqs7222_parse_props(iqs7222, event_node, reg_grp_index,
+				    reg_grp, reg_key);
+	if (error)
+		return error;
+
+	error = iqs7222_gpio_select(iqs7222, event_node, event_enable,
+				    event_link);
+	if (error)
+		return error;
+
+	error = fwnode_property_read_u32(event_node, "linux,code", event_code);
+	if (error == -EINVAL) {
+		return 0;
+	} else if (error) {
+		dev_err(&client->dev, "Failed to read %s code: %d\n",
+			fwnode_get_name(event_node), error);
+		return error;
+	}
+
+	if (!event_type) {
+		input_set_capability(iqs7222->keypad, EV_KEY, *event_code);
+		return 0;
+	}
+
+	error = fwnode_property_read_u32(event_node, "linux,input-type",
+					 event_type);
+	if (error == -EINVAL) {
+		*event_type = EV_KEY;
+	} else if (error) {
+		dev_err(&client->dev, "Failed to read %s input type: %d\n",
+			fwnode_get_name(event_node), error);
+		return error;
+	} else if (*event_type != EV_KEY && *event_type != EV_SW) {
+		dev_err(&client->dev, "Invalid %s input type: %d\n",
+			fwnode_get_name(event_node), *event_type);
+		return -EINVAL;
+	}
+
+	input_set_capability(iqs7222->keypad, *event_type, *event_code);
+
+	return 0;
+}
+
+static int iqs7222_parse_cycle(struct iqs7222_private *iqs7222,
+			       struct fwnode_handle *cycle_node, int cycle_index)
+{
+	u16 *cycle_setup = iqs7222->cycle_setup[cycle_index];
+	struct i2c_client *client = iqs7222->client;
+	unsigned int pins[9];
+	int error, count, i;
+
+	/*
+	 * Each channel shares a cycle with one other channel; the mapping of
+	 * channels to cycles is fixed. Properties defined for a cycle impact
+	 * both channels tied to the cycle.
+	 *
+	 * Unlike channels which are restricted to a select range of CRx pins
+	 * based on channel number, any cycle can claim any of the device's 9
+	 * CTx pins (CTx0-8).
+	 */
+	if (!fwnode_property_present(cycle_node, "azoteq,tx-enable"))
+		return 0;
+
+	count = fwnode_property_count_u32(cycle_node, "azoteq,tx-enable");
+	if (count < 0) {
+		dev_err(&client->dev, "Failed to count %s CTx pins: %d\n",
+			fwnode_get_name(cycle_node), count);
+		return count;
+	} else if (count > ARRAY_SIZE(pins)) {
+		dev_err(&client->dev, "Invalid number of %s CTx pins\n",
+			fwnode_get_name(cycle_node));
+		return -EINVAL;
+	}
+
+	error = fwnode_property_read_u32_array(cycle_node, "azoteq,tx-enable",
+					       pins, count);
+	if (error) {
+		dev_err(&client->dev, "Failed to read %s CTx pins: %d\n",
+			fwnode_get_name(cycle_node), error);
+		return error;
+	}
+
+	cycle_setup[1] &= ~GENMASK(7 + ARRAY_SIZE(pins) - 1, 7);
+
+	for (i = 0; i < count; i++) {
+		if (pins[i] > 8) {
+			dev_err(&client->dev, "Invalid %s CTx pin: %u\n",
+				fwnode_get_name(cycle_node), pins[i]);
+			return -EINVAL;
+		}
+
+		cycle_setup[1] |= BIT(pins[i] + 7);
+	}
+
+	return 0;
+}
+
+static int iqs7222_parse_chan(struct iqs7222_private *iqs7222,
+			      struct fwnode_handle *chan_node, int chan_index)
+{
+	const struct iqs7222_dev_desc *dev_desc = iqs7222->dev_desc;
+	struct i2c_client *client = iqs7222->client;
+	int num_chan = dev_desc->reg_grps[IQS7222_REG_GRP_CHAN].num_row;
+	int ext_chan = rounddown(num_chan, 10);
+	int error, i;
+	u16 *chan_setup = iqs7222->chan_setup[chan_index];
+	u16 *sys_setup = iqs7222->sys_setup;
+	unsigned int val;
+
+	if (dev_desc->allow_offset &&
+	    fwnode_property_present(chan_node, "azoteq,ulp-allow"))
+		sys_setup[dev_desc->allow_offset] &= ~BIT(chan_index);
+
+	chan_setup[0] |= IQS7222_CHAN_SETUP_0_CHAN_EN;
+
+	/*
+	 * The reference channel function allows for differential measurements
+	 * and is only available in the case of IQS7222A or IQS7222C.
+	 */
+	if (dev_desc->reg_grps[IQS7222_REG_GRP_CHAN].num_col > 4 &&
+	    fwnode_property_present(chan_node, "azoteq,ref-select")) {
+		u16 *ref_setup;
+
+		error = fwnode_property_read_u32(chan_node, "azoteq,ref-select",
+						 &val);
+		if (error) {
+			dev_err(&client->dev,
+				"Failed to read %s reference channel: %d\n",
+				fwnode_get_name(chan_node), error);
+			return error;
+		}
+
+		if (val >= ext_chan) {
+			dev_err(&client->dev,
+				"Invalid %s reference channel: %u\n",
+				fwnode_get_name(chan_node), val);
+			return -EINVAL;
+		}
+
+		ref_setup = iqs7222->chan_setup[val];
+
+		/*
+		 * Configure the current channel as a follower of the selected
+		 * reference channel.
+		 */
+		chan_setup[0] |= IQS7222_CHAN_SETUP_0_REF_MODE_FOLLOW;
+		chan_setup[4] = val * 42 + 1048;
+
+		error = fwnode_property_read_u32(chan_node, "azoteq,ref-weight",
+						 &val);
+		if (!error) {
+			if (val > U16_MAX) {
+				dev_err(&client->dev,
+					"Invalid %s reference weight: %u\n",
+					fwnode_get_name(chan_node), val);
+				return -EINVAL;
+			}
+
+			chan_setup[5] = val;
+		} else if (error != -EINVAL) {
+			dev_err(&client->dev,
+				"Failed to read %s reference weight: %d\n",
+				fwnode_get_name(chan_node), error);
+			return error;
+		}
+
+		/*
+		 * Configure the selected channel as a reference channel which
+		 * serves the current channel.
+		 */
+		ref_setup[0] |= IQS7222_CHAN_SETUP_0_REF_MODE_REF;
+		ref_setup[5] |= BIT(chan_index);
+
+		ref_setup[4] = dev_desc->touch_link;
+		if (fwnode_property_present(chan_node, "azoteq,use-prox"))
+			ref_setup[4] -= 2;
+	}
+
+	if (fwnode_property_present(chan_node, "azoteq,rx-enable")) {
+		/*
+		 * Each channel can claim up to 4 CRx pins. The first half of
+		 * the channels can use CRx0-3, while the second half can use
+		 * CRx4-7.
+		 */
+		unsigned int pins[4];
+		int count;
+
+		count = fwnode_property_count_u32(chan_node,
+						  "azoteq,rx-enable");
+		if (count < 0) {
+			dev_err(&client->dev,
+				"Failed to count %s CRx pins: %d\n",
+				fwnode_get_name(chan_node), count);
+			return count;
+		} else if (count > ARRAY_SIZE(pins)) {
+			dev_err(&client->dev,
+				"Invalid number of %s CRx pins\n",
+				fwnode_get_name(chan_node));
+			return -EINVAL;
+		}
+
+		error = fwnode_property_read_u32_array(chan_node,
+						       "azoteq,rx-enable",
+						       pins, count);
+		if (error) {
+			dev_err(&client->dev,
+				"Failed to read %s CRx pins: %d\n",
+				fwnode_get_name(chan_node), error);
+			return error;
+		}
+
+		chan_setup[0] &= ~GENMASK(4 + ARRAY_SIZE(pins) - 1, 4);
+
+		for (i = 0; i < count; i++) {
+			int min_crx = chan_index < ext_chan / 2 ? 0 : 4;
+
+			if (pins[i] < min_crx || pins[i] > min_crx + 3) {
+				dev_err(&client->dev,
+					"Invalid %s CRx pin: %u\n",
+					fwnode_get_name(chan_node), pins[i]);
+				return -EINVAL;
+			}
+
+			chan_setup[0] |= BIT(pins[i] + 4 - min_crx);
+		}
+	}
+
+	for (i = 0; i < ARRAY_SIZE(iqs7222_kp_events); i++) {
+		const char *event_name = iqs7222_kp_events[i].name;
+		u16 event_enable = iqs7222_kp_events[i].enable;
+		struct fwnode_handle *event_node;
+
+		event_node = fwnode_get_named_child_node(chan_node, event_name);
+		if (!event_node)
+			continue;
+
+		error = fwnode_property_read_u32(event_node,
+						 "azoteq,timeout-press-ms",
+						 &val);
+		if (!error) {
+			/*
+			 * The IQS7222B employs a global pair of press timeout
+			 * registers as opposed to channel-specific registers.
+			 */
+			u16 *setup = dev_desc->reg_grps
+				     [IQS7222_REG_GRP_BTN].num_col > 2 ?
+				     &iqs7222->btn_setup[chan_index][2] :
+				     &sys_setup[9];
+
+			if (val > U8_MAX * 500) {
+				dev_err(&client->dev,
+					"Invalid %s press timeout: %u\n",
+					fwnode_get_name(event_node), val);
+				fwnode_handle_put(event_node);
+				return -EINVAL;
+			}
+
+			*setup &= ~(U8_MAX << i * 8);
+			*setup |= (val / 500 << i * 8);
+		} else if (error != -EINVAL) {
+			dev_err(&client->dev,
+				"Failed to read %s press timeout: %d\n",
+				fwnode_get_name(event_node), error);
+			fwnode_handle_put(event_node);
+			return error;
+		}
+
+		error = iqs7222_parse_event(iqs7222, event_node, chan_index,
+					    IQS7222_REG_GRP_BTN,
+					    iqs7222_kp_events[i].reg_key,
+					    BIT(chan_index),
+					    dev_desc->touch_link - (i ? 0 : 2),
+					    &iqs7222->kp_type[chan_index][i],
+					    &iqs7222->kp_code[chan_index][i]);
+		fwnode_handle_put(event_node);
+		if (error)
+			return error;
+
+		if (!dev_desc->event_offset)
+			continue;
+
+		sys_setup[dev_desc->event_offset] |= event_enable;
+	}
+
+	/*
+	 * The following call handles a special pair of properties that apply
+	 * to a channel node, but reside within the button (event) group.
+	 */
+	return iqs7222_parse_props(iqs7222, chan_node, chan_index,
+				   IQS7222_REG_GRP_BTN,
+				   IQS7222_REG_KEY_DEBOUNCE);
+}
+
+static int iqs7222_parse_sldr(struct iqs7222_private *iqs7222,
+			      struct fwnode_handle *sldr_node, int sldr_index)
+{
+	const struct iqs7222_dev_desc *dev_desc = iqs7222->dev_desc;
+	struct i2c_client *client = iqs7222->client;
+	int num_chan = dev_desc->reg_grps[IQS7222_REG_GRP_CHAN].num_row;
+	int ext_chan = rounddown(num_chan, 10);
+	int count, error, reg_offset, i;
+	u16 *event_mask = &iqs7222->sys_setup[dev_desc->event_offset];
+	u16 *sldr_setup = iqs7222->sldr_setup[sldr_index];
+	unsigned int chan_sel[4], val;
+
+	/*
+	 * Each slider can be spread across 3 to 4 channels. It is possible to
+	 * select only 2 channels, but doing so prevents the slider from using
+	 * the specified resolution.
+	 */
+	count = fwnode_property_count_u32(sldr_node, "azoteq,channel-select");
+	if (count < 0) {
+		dev_err(&client->dev, "Failed to count %s channels: %d\n",
+			fwnode_get_name(sldr_node), count);
+		return count;
+	} else if (count < 3 || count > ARRAY_SIZE(chan_sel)) {
+		dev_err(&client->dev, "Invalid number of %s channels\n",
+			fwnode_get_name(sldr_node));
+		return -EINVAL;
+	}
+
+	error = fwnode_property_read_u32_array(sldr_node,
+					       "azoteq,channel-select",
+					       chan_sel, count);
+	if (error) {
+		dev_err(&client->dev, "Failed to read %s channels: %d\n",
+			fwnode_get_name(sldr_node), error);
+		return error;
+	}
+
+	/*
+	 * Resolution and top speed, if small enough, are packed into a single
+	 * register. Otherwise, each occupies its own register and the rest of
+	 * the slider-related register addresses are offset by one.
+	 */
+	reg_offset = dev_desc->sldr_res < U16_MAX ? 0 : 1;
+
+	sldr_setup[0] |= count;
+	sldr_setup[3 + reg_offset] &= ~GENMASK(ext_chan - 1, 0);
+
+	for (i = 0; i < ARRAY_SIZE(chan_sel); i++) {
+		sldr_setup[5 + reg_offset + i] = 0;
+		if (i >= count)
+			continue;
+
+		if (chan_sel[i] >= ext_chan) {
+			dev_err(&client->dev, "Invalid %s channel: %u\n",
+				fwnode_get_name(sldr_node), chan_sel[i]);
+			return -EINVAL;
+		}
+
+		/*
+		 * The following fields indicate which channels participate in
+		 * the slider, as well as each channel's relative placement.
+		 */
+		sldr_setup[3 + reg_offset] |= BIT(chan_sel[i]);
+		sldr_setup[5 + reg_offset + i] = chan_sel[i] * 42 + 1080;
+	}
+
+	sldr_setup[4 + reg_offset] = dev_desc->touch_link;
+	if (fwnode_property_present(sldr_node, "azoteq,use-prox"))
+		sldr_setup[4 + reg_offset] -= 2;
+
+	error = fwnode_property_read_u32(sldr_node, "azoteq,slider-size", &val);
+	if (!error) {
+		if (val > dev_desc->sldr_res) {
+			dev_err(&client->dev, "Invalid %s size: %u\n",
+				fwnode_get_name(sldr_node), val);
+			return -EINVAL;
+		}
+
+		if (reg_offset) {
+			sldr_setup[3] = val;
+		} else {
+			sldr_setup[2] &= ~IQS7222_SLDR_SETUP_2_RES_MASK;
+			sldr_setup[2] |= (val / 16 <<
+					  IQS7222_SLDR_SETUP_2_RES_SHIFT);
+		}
+	} else if (error != -EINVAL) {
+		dev_err(&client->dev, "Failed to read %s size: %d\n",
+			fwnode_get_name(sldr_node), error);
+		return error;
+	}
+
+	if (!(reg_offset ? sldr_setup[3]
+			 : sldr_setup[2] & IQS7222_SLDR_SETUP_2_RES_MASK)) {
+		dev_err(&client->dev, "Undefined %s size\n",
+			fwnode_get_name(sldr_node));
+		return -EINVAL;
+	}
+
+	error = fwnode_property_read_u32(sldr_node, "azoteq,top-speed", &val);
+	if (!error) {
+		if (val > (reg_offset ? U16_MAX : U8_MAX * 4)) {
+			dev_err(&client->dev, "Invalid %s top speed: %u\n",
+				fwnode_get_name(sldr_node), val);
+			return -EINVAL;
+		}
+
+		if (reg_offset) {
+			sldr_setup[2] = val;
+		} else {
+			sldr_setup[2] &= ~IQS7222_SLDR_SETUP_2_TOP_SPEED_MASK;
+			sldr_setup[2] |= (val / 4);
+		}
+	} else if (error != -EINVAL) {
+		dev_err(&client->dev, "Failed to read %s top speed: %d\n",
+			fwnode_get_name(sldr_node), error);
+		return error;
+	}
+
+	error = fwnode_property_read_u32(sldr_node, "linux,axis", &val);
+	if (!error) {
+		u16 sldr_max = sldr_setup[3] - 1;
+
+		if (!reg_offset) {
+			sldr_max = sldr_setup[2];
+
+			sldr_max &= IQS7222_SLDR_SETUP_2_RES_MASK;
+			sldr_max >>= IQS7222_SLDR_SETUP_2_RES_SHIFT;
+
+			sldr_max = sldr_max * 16 - 1;
+		}
+
+		input_set_abs_params(iqs7222->keypad, val, 0, sldr_max, 0, 0);
+		iqs7222->sl_axis[sldr_index] = val;
+	} else if (error != -EINVAL) {
+		dev_err(&client->dev, "Failed to read %s axis: %d\n",
+			fwnode_get_name(sldr_node), error);
+		return error;
+	}
+
+	if (dev_desc->wheel_enable) {
+		sldr_setup[0] &= ~dev_desc->wheel_enable;
+		if (iqs7222->sl_axis[sldr_index] == ABS_WHEEL)
+			sldr_setup[0] |= dev_desc->wheel_enable;
+	}
+
+	/*
+	 * The absence of a register offset makes it safe to assume the device
+	 * supports gestures, each of which is first disabled until explicitly
+	 * enabled.
+	 */
+	if (!reg_offset)
+		for (i = 0; i < ARRAY_SIZE(iqs7222_sl_events); i++)
+			sldr_setup[9] &= ~iqs7222_sl_events[i].enable;
+
+	for (i = 0; i < ARRAY_SIZE(iqs7222_sl_events); i++) {
+		const char *event_name = iqs7222_sl_events[i].name;
+		struct fwnode_handle *event_node;
+		enum iqs7222_reg_key_id reg_key;
+
+		event_node = fwnode_get_named_child_node(sldr_node, event_name);
+		if (!event_node)
+			continue;
+
+		/*
+		 * Depending on the device, gestures are either offered using
+		 * one of two timing resolutions, or are not supported at all.
+		 */
+		if (reg_offset)
+			reg_key = IQS7222_REG_KEY_RESERVED;
+		else if (dev_desc->legacy_gesture &&
+			 iqs7222_sl_events[i].reg_key == IQS7222_REG_KEY_TAP)
+			reg_key = IQS7222_REG_KEY_TAP_LEGACY;
+		else if (dev_desc->legacy_gesture &&
+			 iqs7222_sl_events[i].reg_key == IQS7222_REG_KEY_AXIAL)
+			reg_key = IQS7222_REG_KEY_AXIAL_LEGACY;
+		else
+			reg_key = iqs7222_sl_events[i].reg_key;
+
+		/*
+		 * The press/release event does not expose a direct GPIO link,
+		 * but one can be emulated by tying each of the participating
+		 * channels to the same GPIO.
+		 */
+		error = iqs7222_parse_event(iqs7222, event_node, sldr_index,
+					    IQS7222_REG_GRP_SLDR, reg_key,
+					    i ? iqs7222_sl_events[i].enable
+					      : sldr_setup[3 + reg_offset],
+					    i ? 1568 + sldr_index * 30
+					      : sldr_setup[4 + reg_offset],
+					    NULL,
+					    &iqs7222->sl_code[sldr_index][i]);
+		fwnode_handle_put(event_node);
+		if (error)
+			return error;
+
+		if (!reg_offset)
+			sldr_setup[9] |= iqs7222_sl_events[i].enable;
+
+		if (!dev_desc->event_offset)
+			continue;
+
+		/*
+		 * The press/release event is determined based on whether the
+		 * coordinate field reports 0xFFFF and solely relies on touch
+		 * or proximity interrupts to be unmasked.
+		 */
+		if (i && !reg_offset)
+			*event_mask |= (IQS7222_EVENT_MASK_SLDR << sldr_index);
+		else if (sldr_setup[4 + reg_offset] == dev_desc->touch_link)
+			*event_mask |= IQS7222_EVENT_MASK_TOUCH;
+		else
+			*event_mask |= IQS7222_EVENT_MASK_PROX;
+	}
+
+	/*
+	 * The following call handles a special pair of properties that shift
+	 * to make room for a wheel enable control in the case of IQS7222C.
+	 */
+	return iqs7222_parse_props(iqs7222, sldr_node, sldr_index,
+				   IQS7222_REG_GRP_SLDR,
+				   dev_desc->wheel_enable ?
+				   IQS7222_REG_KEY_WHEEL :
+				   IQS7222_REG_KEY_NO_WHEEL);
+}
+
+static int (*iqs7222_parse_extra[IQS7222_NUM_REG_GRPS])
+				(struct iqs7222_private *iqs7222,
+				 struct fwnode_handle *reg_grp_node,
+				 int reg_grp_index) = {
+	[IQS7222_REG_GRP_CYCLE] = iqs7222_parse_cycle,
+	[IQS7222_REG_GRP_CHAN] = iqs7222_parse_chan,
+	[IQS7222_REG_GRP_SLDR] = iqs7222_parse_sldr,
+};
+
+static int iqs7222_parse_reg_grp(struct iqs7222_private *iqs7222,
+				 enum iqs7222_reg_grp_id reg_grp,
+				 int reg_grp_index)
+{
+	struct i2c_client *client = iqs7222->client;
+	struct fwnode_handle *reg_grp_node;
+	int error;
+
+	if (iqs7222_reg_grp_names[reg_grp]) {
+		char reg_grp_name[16];
+
+		snprintf(reg_grp_name, sizeof(reg_grp_name), "%s-%d",
+			 iqs7222_reg_grp_names[reg_grp], reg_grp_index);
+
+		reg_grp_node = device_get_named_child_node(&client->dev,
+							   reg_grp_name);
+	} else {
+		reg_grp_node = fwnode_handle_get(dev_fwnode(&client->dev));
+	}
+
+	if (!reg_grp_node)
+		return 0;
+
+	error = iqs7222_parse_props(iqs7222, reg_grp_node, reg_grp_index,
+				    reg_grp, IQS7222_REG_KEY_NONE);
+
+	if (!error && iqs7222_parse_extra[reg_grp])
+		error = iqs7222_parse_extra[reg_grp](iqs7222, reg_grp_node,
+						     reg_grp_index);
+
+	fwnode_handle_put(reg_grp_node);
+
+	return error;
+}
+
+static int iqs7222_parse_all(struct iqs7222_private *iqs7222)
+{
+	const struct iqs7222_dev_desc *dev_desc = iqs7222->dev_desc;
+	const struct iqs7222_reg_grp_desc *reg_grps = dev_desc->reg_grps;
+	u16 *sys_setup = iqs7222->sys_setup;
+	int error, i, j;
+
+	if (dev_desc->allow_offset)
+		sys_setup[dev_desc->allow_offset] = U16_MAX;
+
+	if (dev_desc->event_offset)
+		sys_setup[dev_desc->event_offset] = IQS7222_EVENT_MASK_ATI;
+
+	for (i = 0; i < reg_grps[IQS7222_REG_GRP_GPIO].num_row; i++) {
+		u16 *gpio_setup = iqs7222->gpio_setup[i];
+
+		gpio_setup[0] &= ~IQS7222_GPIO_SETUP_0_GPIO_EN;
+		gpio_setup[1] = 0;
+		gpio_setup[2] = 0;
+
+		if (reg_grps[IQS7222_REG_GRP_GPIO].num_row == 1)
+			continue;
+
+		/*
+		 * The IQS7222C exposes multiple GPIO and must be informed
+		 * as to which GPIO this group represents.
+		 */
+		for (j = 0; j < ARRAY_SIZE(iqs7222_gpio_links); j++)
+			gpio_setup[0] &= ~BIT(iqs7222_gpio_links[j]);
+
+		gpio_setup[0] |= BIT(iqs7222_gpio_links[i]);
+	}
+
+	for (i = 0; i < reg_grps[IQS7222_REG_GRP_CHAN].num_row; i++) {
+		u16 *chan_setup = iqs7222->chan_setup[i];
+
+		chan_setup[0] &= ~IQS7222_CHAN_SETUP_0_REF_MODE_MASK;
+		chan_setup[0] &= ~IQS7222_CHAN_SETUP_0_CHAN_EN;
+
+		chan_setup[5] = 0;
+	}
+
+	for (i = 0; i < reg_grps[IQS7222_REG_GRP_SLDR].num_row; i++) {
+		u16 *sldr_setup = iqs7222->sldr_setup[i];
+
+		sldr_setup[0] &= ~IQS7222_SLDR_SETUP_0_CHAN_CNT_MASK;
+	}
+
+	for (i = 0; i < IQS7222_NUM_REG_GRPS; i++) {
+		for (j = 0; j < reg_grps[i].num_row; j++) {
+			error = iqs7222_parse_reg_grp(iqs7222, i, j);
+			if (error)
+				return error;
+		}
+	}
+
+	return 0;
+}
+
+static int iqs7222_report(struct iqs7222_private *iqs7222)
+{
+	const struct iqs7222_dev_desc *dev_desc = iqs7222->dev_desc;
+	struct i2c_client *client = iqs7222->client;
+	int num_chan = dev_desc->reg_grps[IQS7222_REG_GRP_CHAN].num_row;
+	int num_stat = dev_desc->reg_grps[IQS7222_REG_GRP_STAT].num_col;
+	int error, i, j;
+	__le16 status[IQS7222_MAX_COLS_STAT];
+
+	error = iqs7222_read_burst(iqs7222, IQS7222_SYS_STATUS, status,
+				   num_stat);
+	if (error)
+		return error;
+
+	if (le16_to_cpu(status[0]) & IQS7222_SYS_STATUS_RESET) {
+		dev_err(&client->dev, "Unexpected device reset\n");
+		return iqs7222_dev_init(iqs7222, WRITE);
+	}
+
+	if (le16_to_cpu(status[0]) & IQS7222_SYS_STATUS_ATI_ERROR) {
+		dev_err(&client->dev, "Unexpected ATI error\n");
+		return iqs7222_ati_trigger(iqs7222);
+	}
+
+	if (le16_to_cpu(status[0]) & IQS7222_SYS_STATUS_ATI_ACTIVE)
+		return 0;
+
+	for (i = 0; i < num_chan; i++) {
+		u16 *chan_setup = iqs7222->chan_setup[i];
+
+		if (!(chan_setup[0] & IQS7222_CHAN_SETUP_0_CHAN_EN))
+			continue;
+
+		for (j = 0; j < ARRAY_SIZE(iqs7222_kp_events); j++) {
+			/*
+			 * Proximity state begins at offset 2 and spills into
+			 * offset 3 for devices with more than 16 channels.
+			 *
+			 * Touch state begins at the first offset immediately
+			 * following proximity state.
+			 */
+			int k = 2 + j * (num_chan > 16 ? 2 : 1);
+			u16 state = le16_to_cpu(status[k + i / 16]);
+
+			if (!iqs7222->kp_type[i][j])
+				continue;
+
+			input_event(iqs7222->keypad,
+				    iqs7222->kp_type[i][j],
+				    iqs7222->kp_code[i][j],
+				    !!(state & BIT(i % 16)));
+		}
+	}
+
+	for (i = 0; i < dev_desc->reg_grps[IQS7222_REG_GRP_SLDR].num_row; i++) {
+		u16 *sldr_setup = iqs7222->sldr_setup[i];
+		u16 sldr_pos = le16_to_cpu(status[4 + i]);
+		u16 state = le16_to_cpu(status[6 + i]);
+
+		if (!(sldr_setup[0] & IQS7222_SLDR_SETUP_0_CHAN_CNT_MASK))
+			continue;
+
+		if (sldr_pos < dev_desc->sldr_res)
+			input_report_abs(iqs7222->keypad, iqs7222->sl_axis[i],
+					 sldr_pos);
+
+		input_report_key(iqs7222->keypad, iqs7222->sl_code[i][0],
+				 sldr_pos < dev_desc->sldr_res);
+
+		/*
+		 * A maximum resolution indicates the device does not support
+		 * gestures, in which case the remaining fields are ignored.
+		 */
+		if (dev_desc->sldr_res == U16_MAX)
+			continue;
+
+		if (!(le16_to_cpu(status[1]) & IQS7222_EVENT_MASK_SLDR << i))
+			continue;
+
+		/*
+		 * Skip the press/release event, as it does not have separate
+		 * status fields and is handled separately.
+		 */
+		for (j = 1; j < ARRAY_SIZE(iqs7222_sl_events); j++) {
+			u16 mask = iqs7222_sl_events[j].mask;
+			u16 val = iqs7222_sl_events[j].val;
+
+			input_report_key(iqs7222->keypad,
+					 iqs7222->sl_code[i][j],
+					 (state & mask) == val);
+		}
+
+		input_sync(iqs7222->keypad);
+
+		for (j = 1; j < ARRAY_SIZE(iqs7222_sl_events); j++)
+			input_report_key(iqs7222->keypad,
+					 iqs7222->sl_code[i][j], 0);
+	}
+
+	input_sync(iqs7222->keypad);
+
+	return 0;
+}
+
+static irqreturn_t iqs7222_irq(int irq, void *context)
+{
+	struct iqs7222_private *iqs7222 = context;
+
+	return iqs7222_report(iqs7222) ? IRQ_NONE : IRQ_HANDLED;
+}
+
+static int iqs7222_probe(struct i2c_client *client)
+{
+	struct iqs7222_private *iqs7222;
+	unsigned long irq_flags;
+	int error, irq;
+
+	iqs7222 = devm_kzalloc(&client->dev, sizeof(*iqs7222), GFP_KERNEL);
+	if (!iqs7222)
+		return -ENOMEM;
+
+	i2c_set_clientdata(client, iqs7222);
+	iqs7222->client = client;
+
+	iqs7222->keypad = devm_input_allocate_device(&client->dev);
+	if (!iqs7222->keypad)
+		return -ENOMEM;
+
+	iqs7222->keypad->name = client->name;
+	iqs7222->keypad->id.bustype = BUS_I2C;
+
+	/*
+	 * The RDY pin behaves as an interrupt, but must also be polled ahead
+	 * of unsolicited I2C communication. As such, it is first opened as a
+	 * GPIO and then passed to gpiod_to_irq() to register the interrupt.
+	 */
+	iqs7222->irq_gpio = devm_gpiod_get(&client->dev, "irq", GPIOD_IN);
+	if (IS_ERR(iqs7222->irq_gpio)) {
+		error = PTR_ERR(iqs7222->irq_gpio);
+		dev_err(&client->dev, "Failed to request IRQ GPIO: %d\n",
+			error);
+		return error;
+	}
+
+	iqs7222->reset_gpio = devm_gpiod_get_optional(&client->dev, "reset",
+						      GPIOD_OUT_HIGH);
+	if (IS_ERR(iqs7222->reset_gpio)) {
+		error = PTR_ERR(iqs7222->reset_gpio);
+		dev_err(&client->dev, "Failed to request reset GPIO: %d\n",
+			error);
+		return error;
+	}
+
+	error = iqs7222_hard_reset(iqs7222);
+	if (error)
+		return error;
+
+	error = iqs7222_dev_info(iqs7222);
+	if (error)
+		return error;
+
+	error = iqs7222_dev_init(iqs7222, READ);
+	if (error)
+		return error;
+
+	error = iqs7222_parse_all(iqs7222);
+	if (error)
+		return error;
+
+	error = iqs7222_dev_init(iqs7222, WRITE);
+	if (error)
+		return error;
+
+	error = iqs7222_report(iqs7222);
+	if (error)
+		return error;
+
+	error = input_register_device(iqs7222->keypad);
+	if (error) {
+		dev_err(&client->dev, "Failed to register device: %d\n", error);
+		return error;
+	}
+
+	irq = gpiod_to_irq(iqs7222->irq_gpio);
+	if (irq < 0)
+		return irq;
+
+	irq_flags = gpiod_is_active_low(iqs7222->irq_gpio) ? IRQF_TRIGGER_LOW
+							   : IRQF_TRIGGER_HIGH;
+	irq_flags |= IRQF_ONESHOT;
+
+	error = devm_request_threaded_irq(&client->dev, irq, NULL, iqs7222_irq,
+					  irq_flags, client->name, iqs7222);
+	if (error)
+		dev_err(&client->dev, "Failed to request IRQ: %d\n", error);
+
+	return error;
+}
+
+static const struct of_device_id iqs7222_of_match[] = {
+	{ .compatible = "azoteq,iqs7222a" },
+	{ .compatible = "azoteq,iqs7222b" },
+	{ .compatible = "azoteq,iqs7222c" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, iqs7222_of_match);
+
+static struct i2c_driver iqs7222_i2c_driver = {
+	.driver = {
+		.name = "iqs7222",
+		.of_match_table = iqs7222_of_match,
+	},
+	.probe_new = iqs7222_probe,
+};
+module_i2c_driver(iqs7222_i2c_driver);
+
+MODULE_AUTHOR("Jeff LaBundy <jeff@labundy.com>");
+MODULE_DESCRIPTION("Azoteq IQS7222A/B/C Capacitive Touch Controller");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/misc/keyspan_remote.c b/drivers/input/misc/keyspan_remote.c
new file mode 100644
index 000000000..bee4b1376
--- /dev/null
+++ b/drivers/input/misc/keyspan_remote.c
@@ -0,0 +1,590 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * keyspan_remote: USB driver for the Keyspan DMR
+ *
+ * Copyright (C) 2005 Zymeta Corporation - Michael Downey (downey@zymeta.com)
+ *
+ * This driver has been put together with the support of Innosys, Inc.
+ * and Keyspan, Inc the manufacturers of the Keyspan USB DMR product.
+ */
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/usb/input.h>
+
+/* Parameters that can be passed to the driver. */
+static int debug;
+module_param(debug, int, 0444);
+MODULE_PARM_DESC(debug, "Enable extra debug messages and information");
+
+/* Vendor and product ids */
+#define USB_KEYSPAN_VENDOR_ID		0x06CD
+#define USB_KEYSPAN_PRODUCT_UIA11	0x0202
+
+/* Defines for converting the data from the remote. */
+#define ZERO		0x18
+#define ZERO_MASK	0x1F	/* 5 bits for a 0 */
+#define ONE		0x3C
+#define ONE_MASK	0x3F	/* 6 bits for a 1 */
+#define SYNC		0x3F80
+#define SYNC_MASK	0x3FFF	/* 14 bits for a SYNC sequence */
+#define STOP		0x00
+#define STOP_MASK	0x1F	/* 5 bits for the STOP sequence */
+#define GAP		0xFF
+
+#define RECV_SIZE	8	/* The UIA-11 type have a 8 byte limit. */
+
+/*
+ * Table that maps the 31 possible keycodes to input keys.
+ * Currently there are 15 and 17 button models so RESERVED codes
+ * are blank areas in the mapping.
+ */
+static const unsigned short keyspan_key_table[] = {
+	KEY_RESERVED,		/* 0 is just a place holder. */
+	KEY_RESERVED,
+	KEY_STOP,
+	KEY_PLAYCD,
+	KEY_RESERVED,
+	KEY_PREVIOUSSONG,
+	KEY_REWIND,
+	KEY_FORWARD,
+	KEY_NEXTSONG,
+	KEY_RESERVED,
+	KEY_RESERVED,
+	KEY_RESERVED,
+	KEY_PAUSE,
+	KEY_VOLUMEUP,
+	KEY_RESERVED,
+	KEY_RESERVED,
+	KEY_RESERVED,
+	KEY_VOLUMEDOWN,
+	KEY_RESERVED,
+	KEY_UP,
+	KEY_RESERVED,
+	KEY_MUTE,
+	KEY_LEFT,
+	KEY_ENTER,
+	KEY_RIGHT,
+	KEY_RESERVED,
+	KEY_RESERVED,
+	KEY_DOWN,
+	KEY_RESERVED,
+	KEY_KPASTERISK,
+	KEY_RESERVED,
+	KEY_MENU
+};
+
+/* table of devices that work with this driver */
+static const struct usb_device_id keyspan_table[] = {
+	{ USB_DEVICE(USB_KEYSPAN_VENDOR_ID, USB_KEYSPAN_PRODUCT_UIA11) },
+	{ }					/* Terminating entry */
+};
+
+/* Structure to store all the real stuff that a remote sends to us. */
+struct keyspan_message {
+	u16	system;
+	u8	button;
+	u8	toggle;
+};
+
+/* Structure used for all the bit testing magic needed to be done. */
+struct bit_tester {
+	u32	tester;
+	int	len;
+	int	pos;
+	int	bits_left;
+	u8	buffer[32];
+};
+
+/* Structure to hold all of our driver specific stuff */
+struct usb_keyspan {
+	char				name[128];
+	char				phys[64];
+	unsigned short			keymap[ARRAY_SIZE(keyspan_key_table)];
+	struct usb_device		*udev;
+	struct input_dev		*input;
+	struct usb_interface		*interface;
+	struct usb_endpoint_descriptor	*in_endpoint;
+	struct urb*			irq_urb;
+	int				open;
+	dma_addr_t			in_dma;
+	unsigned char			*in_buffer;
+
+	/* variables used to parse messages from remote. */
+	struct bit_tester		data;
+	int				stage;
+	int				toggle;
+};
+
+static struct usb_driver keyspan_driver;
+
+/*
+ * Debug routine that prints out what we've received from the remote.
+ */
+static void keyspan_print(struct usb_keyspan* dev) /*unsigned char* data)*/
+{
+	char codes[4 * RECV_SIZE];
+	int i;
+
+	for (i = 0; i < RECV_SIZE; i++)
+		snprintf(codes + i * 3, 4, "%02x ", dev->in_buffer[i]);
+
+	dev_info(&dev->udev->dev, "%s\n", codes);
+}
+
+/*
+ * Routine that manages the bit_tester structure.  It makes sure that there are
+ * at least bits_needed bits loaded into the tester.
+ */
+static int keyspan_load_tester(struct usb_keyspan* dev, int bits_needed)
+{
+	if (dev->data.bits_left >= bits_needed)
+		return 0;
+
+	/*
+	 * Somehow we've missed the last message. The message will be repeated
+	 * though so it's not too big a deal
+	 */
+	if (dev->data.pos >= dev->data.len) {
+		dev_dbg(&dev->interface->dev,
+			"%s - Error ran out of data. pos: %d, len: %d\n",
+			__func__, dev->data.pos, dev->data.len);
+		return -1;
+	}
+
+	/* Load as much as we can into the tester. */
+	while ((dev->data.bits_left + 7 < (sizeof(dev->data.tester) * 8)) &&
+	       (dev->data.pos < dev->data.len)) {
+		dev->data.tester += (dev->data.buffer[dev->data.pos++] << dev->data.bits_left);
+		dev->data.bits_left += 8;
+	}
+
+	return 0;
+}
+
+static void keyspan_report_button(struct usb_keyspan *remote, int button, int press)
+{
+	struct input_dev *input = remote->input;
+
+	input_event(input, EV_MSC, MSC_SCAN, button);
+	input_report_key(input, remote->keymap[button], press);
+	input_sync(input);
+}
+
+/*
+ * Routine that handles all the logic needed to parse out the message from the remote.
+ */
+static void keyspan_check_data(struct usb_keyspan *remote)
+{
+	int i;
+	int found = 0;
+	struct keyspan_message message;
+
+	switch(remote->stage) {
+	case 0:
+		/*
+		 * In stage 0 we want to find the start of a message.  The remote sends a 0xFF as filler.
+		 * So the first byte that isn't a FF should be the start of a new message.
+		 */
+		for (i = 0; i < RECV_SIZE && remote->in_buffer[i] == GAP; ++i);
+
+		if (i < RECV_SIZE) {
+			memcpy(remote->data.buffer, remote->in_buffer, RECV_SIZE);
+			remote->data.len = RECV_SIZE;
+			remote->data.pos = 0;
+			remote->data.tester = 0;
+			remote->data.bits_left = 0;
+			remote->stage = 1;
+		}
+		break;
+
+	case 1:
+		/*
+		 * Stage 1 we should have 16 bytes and should be able to detect a
+		 * SYNC.  The SYNC is 14 bits, 7 0's and then 7 1's.
+		 */
+		memcpy(remote->data.buffer + remote->data.len, remote->in_buffer, RECV_SIZE);
+		remote->data.len += RECV_SIZE;
+
+		found = 0;
+		while ((remote->data.bits_left >= 14 || remote->data.pos < remote->data.len) && !found) {
+			for (i = 0; i < 8; ++i) {
+				if (keyspan_load_tester(remote, 14) != 0) {
+					remote->stage = 0;
+					return;
+				}
+
+				if ((remote->data.tester & SYNC_MASK) == SYNC) {
+					remote->data.tester = remote->data.tester >> 14;
+					remote->data.bits_left -= 14;
+					found = 1;
+					break;
+				} else {
+					remote->data.tester = remote->data.tester >> 1;
+					--remote->data.bits_left;
+				}
+			}
+		}
+
+		if (!found) {
+			remote->stage = 0;
+			remote->data.len = 0;
+		} else {
+			remote->stage = 2;
+		}
+		break;
+
+	case 2:
+		/*
+		 * Stage 2 we should have 24 bytes which will be enough for a full
+		 * message.  We need to parse out the system code, button code,
+		 * toggle code, and stop.
+		 */
+		memcpy(remote->data.buffer + remote->data.len, remote->in_buffer, RECV_SIZE);
+		remote->data.len += RECV_SIZE;
+
+		message.system = 0;
+		for (i = 0; i < 9; i++) {
+			keyspan_load_tester(remote, 6);
+
+			if ((remote->data.tester & ZERO_MASK) == ZERO) {
+				message.system = message.system << 1;
+				remote->data.tester = remote->data.tester >> 5;
+				remote->data.bits_left -= 5;
+			} else if ((remote->data.tester & ONE_MASK) == ONE) {
+				message.system = (message.system << 1) + 1;
+				remote->data.tester = remote->data.tester >> 6;
+				remote->data.bits_left -= 6;
+			} else {
+				dev_err(&remote->interface->dev,
+					"%s - Unknown sequence found in system data.\n",
+					__func__);
+				remote->stage = 0;
+				return;
+			}
+		}
+
+		message.button = 0;
+		for (i = 0; i < 5; i++) {
+			keyspan_load_tester(remote, 6);
+
+			if ((remote->data.tester & ZERO_MASK) == ZERO) {
+				message.button = message.button << 1;
+				remote->data.tester = remote->data.tester >> 5;
+				remote->data.bits_left -= 5;
+			} else if ((remote->data.tester & ONE_MASK) == ONE) {
+				message.button = (message.button << 1) + 1;
+				remote->data.tester = remote->data.tester >> 6;
+				remote->data.bits_left -= 6;
+			} else {
+				dev_err(&remote->interface->dev,
+					"%s - Unknown sequence found in button data.\n",
+					__func__);
+				remote->stage = 0;
+				return;
+			}
+		}
+
+		keyspan_load_tester(remote, 6);
+		if ((remote->data.tester & ZERO_MASK) == ZERO) {
+			message.toggle = 0;
+			remote->data.tester = remote->data.tester >> 5;
+			remote->data.bits_left -= 5;
+		} else if ((remote->data.tester & ONE_MASK) == ONE) {
+			message.toggle = 1;
+			remote->data.tester = remote->data.tester >> 6;
+			remote->data.bits_left -= 6;
+		} else {
+			dev_err(&remote->interface->dev,
+				"%s - Error in message, invalid toggle.\n",
+				__func__);
+			remote->stage = 0;
+			return;
+		}
+
+		keyspan_load_tester(remote, 5);
+		if ((remote->data.tester & STOP_MASK) == STOP) {
+			remote->data.tester = remote->data.tester >> 5;
+			remote->data.bits_left -= 5;
+		} else {
+			dev_err(&remote->interface->dev,
+				"Bad message received, no stop bit found.\n");
+		}
+
+		dev_dbg(&remote->interface->dev,
+			"%s found valid message: system: %d, button: %d, toggle: %d\n",
+			__func__, message.system, message.button, message.toggle);
+
+		if (message.toggle != remote->toggle) {
+			keyspan_report_button(remote, message.button, 1);
+			keyspan_report_button(remote, message.button, 0);
+			remote->toggle = message.toggle;
+		}
+
+		remote->stage = 0;
+		break;
+	}
+}
+
+/*
+ * Routine for sending all the initialization messages to the remote.
+ */
+static int keyspan_setup(struct usb_device* dev)
+{
+	int retval = 0;
+
+	retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
+				 0x11, 0x40, 0x5601, 0x0, NULL, 0,
+				 USB_CTRL_SET_TIMEOUT);
+	if (retval) {
+		dev_dbg(&dev->dev, "%s - failed to set bit rate due to error: %d\n",
+			__func__, retval);
+		return(retval);
+	}
+
+	retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
+				 0x44, 0x40, 0x0, 0x0, NULL, 0,
+				 USB_CTRL_SET_TIMEOUT);
+	if (retval) {
+		dev_dbg(&dev->dev, "%s - failed to set resume sensitivity due to error: %d\n",
+			__func__, retval);
+		return(retval);
+	}
+
+	retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
+				 0x22, 0x40, 0x0, 0x0, NULL, 0,
+				 USB_CTRL_SET_TIMEOUT);
+	if (retval) {
+		dev_dbg(&dev->dev, "%s - failed to turn receive on due to error: %d\n",
+			__func__, retval);
+		return(retval);
+	}
+
+	dev_dbg(&dev->dev, "%s - Setup complete.\n", __func__);
+	return(retval);
+}
+
+/*
+ * Routine used to handle a new message that has come in.
+ */
+static void keyspan_irq_recv(struct urb *urb)
+{
+	struct usb_keyspan *dev = urb->context;
+	int retval;
+
+	/* Check our status in case we need to bail out early. */
+	switch (urb->status) {
+	case 0:
+		break;
+
+	/* Device went away so don't keep trying to read from it. */
+	case -ECONNRESET:
+	case -ENOENT:
+	case -ESHUTDOWN:
+		return;
+
+	default:
+		goto resubmit;
+	}
+
+	if (debug)
+		keyspan_print(dev);
+
+	keyspan_check_data(dev);
+
+resubmit:
+	retval = usb_submit_urb(urb, GFP_ATOMIC);
+	if (retval)
+		dev_err(&dev->interface->dev,
+			"%s - usb_submit_urb failed with result: %d\n",
+			__func__, retval);
+}
+
+static int keyspan_open(struct input_dev *dev)
+{
+	struct usb_keyspan *remote = input_get_drvdata(dev);
+
+	remote->irq_urb->dev = remote->udev;
+	if (usb_submit_urb(remote->irq_urb, GFP_KERNEL))
+		return -EIO;
+
+	return 0;
+}
+
+static void keyspan_close(struct input_dev *dev)
+{
+	struct usb_keyspan *remote = input_get_drvdata(dev);
+
+	usb_kill_urb(remote->irq_urb);
+}
+
+static struct usb_endpoint_descriptor *keyspan_get_in_endpoint(struct usb_host_interface *iface)
+{
+
+	struct usb_endpoint_descriptor *endpoint;
+	int i;
+
+	for (i = 0; i < iface->desc.bNumEndpoints; ++i) {
+		endpoint = &iface->endpoint[i].desc;
+
+		if (usb_endpoint_is_int_in(endpoint)) {
+			/* we found our interrupt in endpoint */
+			return endpoint;
+		}
+	}
+
+	return NULL;
+}
+
+/*
+ * Routine that sets up the driver to handle a specific USB device detected on the bus.
+ */
+static int keyspan_probe(struct usb_interface *interface, const struct usb_device_id *id)
+{
+	struct usb_device *udev = interface_to_usbdev(interface);
+	struct usb_endpoint_descriptor *endpoint;
+	struct usb_keyspan *remote;
+	struct input_dev *input_dev;
+	int i, error;
+
+	endpoint = keyspan_get_in_endpoint(interface->cur_altsetting);
+	if (!endpoint)
+		return -ENODEV;
+
+	remote = kzalloc(sizeof(*remote), GFP_KERNEL);
+	input_dev = input_allocate_device();
+	if (!remote || !input_dev) {
+		error = -ENOMEM;
+		goto fail1;
+	}
+
+	remote->udev = udev;
+	remote->input = input_dev;
+	remote->interface = interface;
+	remote->in_endpoint = endpoint;
+	remote->toggle = -1;	/* Set to -1 so we will always not match the toggle from the first remote message. */
+
+	remote->in_buffer = usb_alloc_coherent(udev, RECV_SIZE, GFP_KERNEL, &remote->in_dma);
+	if (!remote->in_buffer) {
+		error = -ENOMEM;
+		goto fail1;
+	}
+
+	remote->irq_urb = usb_alloc_urb(0, GFP_KERNEL);
+	if (!remote->irq_urb) {
+		error = -ENOMEM;
+		goto fail2;
+	}
+
+	error = keyspan_setup(udev);
+	if (error) {
+		error = -ENODEV;
+		goto fail3;
+	}
+
+	if (udev->manufacturer)
+		strscpy(remote->name, udev->manufacturer, sizeof(remote->name));
+
+	if (udev->product) {
+		if (udev->manufacturer)
+			strlcat(remote->name, " ", sizeof(remote->name));
+		strlcat(remote->name, udev->product, sizeof(remote->name));
+	}
+
+	if (!strlen(remote->name))
+		snprintf(remote->name, sizeof(remote->name),
+			 "USB Keyspan Remote %04x:%04x",
+			 le16_to_cpu(udev->descriptor.idVendor),
+			 le16_to_cpu(udev->descriptor.idProduct));
+
+	usb_make_path(udev, remote->phys, sizeof(remote->phys));
+	strlcat(remote->phys, "/input0", sizeof(remote->phys));
+	memcpy(remote->keymap, keyspan_key_table, sizeof(remote->keymap));
+
+	input_dev->name = remote->name;
+	input_dev->phys = remote->phys;
+	usb_to_input_id(udev, &input_dev->id);
+	input_dev->dev.parent = &interface->dev;
+	input_dev->keycode = remote->keymap;
+	input_dev->keycodesize = sizeof(unsigned short);
+	input_dev->keycodemax = ARRAY_SIZE(remote->keymap);
+
+	input_set_capability(input_dev, EV_MSC, MSC_SCAN);
+	__set_bit(EV_KEY, input_dev->evbit);
+	for (i = 0; i < ARRAY_SIZE(keyspan_key_table); i++)
+		__set_bit(keyspan_key_table[i], input_dev->keybit);
+	__clear_bit(KEY_RESERVED, input_dev->keybit);
+
+	input_set_drvdata(input_dev, remote);
+
+	input_dev->open = keyspan_open;
+	input_dev->close = keyspan_close;
+
+	/*
+	 * Initialize the URB to access the device.
+	 * The urb gets sent to the device in keyspan_open()
+	 */
+	usb_fill_int_urb(remote->irq_urb,
+			 remote->udev,
+			 usb_rcvintpipe(remote->udev, endpoint->bEndpointAddress),
+			 remote->in_buffer, RECV_SIZE, keyspan_irq_recv, remote,
+			 endpoint->bInterval);
+	remote->irq_urb->transfer_dma = remote->in_dma;
+	remote->irq_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+
+	/* we can register the device now, as it is ready */
+	error = input_register_device(remote->input);
+	if (error)
+		goto fail3;
+
+	/* save our data pointer in this interface device */
+	usb_set_intfdata(interface, remote);
+
+	return 0;
+
+ fail3:	usb_free_urb(remote->irq_urb);
+ fail2:	usb_free_coherent(udev, RECV_SIZE, remote->in_buffer, remote->in_dma);
+ fail1:	kfree(remote);
+	input_free_device(input_dev);
+
+	return error;
+}
+
+/*
+ * Routine called when a device is disconnected from the USB.
+ */
+static void keyspan_disconnect(struct usb_interface *interface)
+{
+	struct usb_keyspan *remote;
+
+	remote = usb_get_intfdata(interface);
+	usb_set_intfdata(interface, NULL);
+
+	if (remote) {	/* We have a valid driver structure so clean up everything we allocated. */
+		input_unregister_device(remote->input);
+		usb_kill_urb(remote->irq_urb);
+		usb_free_urb(remote->irq_urb);
+		usb_free_coherent(remote->udev, RECV_SIZE, remote->in_buffer, remote->in_dma);
+		kfree(remote);
+	}
+}
+
+/*
+ * Standard driver set up sections
+ */
+static struct usb_driver keyspan_driver =
+{
+	.name =		"keyspan_remote",
+	.probe =	keyspan_probe,
+	.disconnect =	keyspan_disconnect,
+	.id_table =	keyspan_table
+};
+
+module_usb_driver(keyspan_driver);
+
+MODULE_DEVICE_TABLE(usb, keyspan_table);
+MODULE_AUTHOR("Michael Downey <downey@zymeta.com>");
+MODULE_DESCRIPTION("Driver for the USB Keyspan remote control.");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/misc/kxtj9.c b/drivers/input/misc/kxtj9.c
new file mode 100644
index 000000000..bbb81617c
--- /dev/null
+++ b/drivers/input/misc/kxtj9.c
@@ -0,0 +1,550 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2011 Kionix, Inc.
+ * Written by Chris Hudson <chudson@kionix.com>
+ */
+
+#include <linux/delay.h>
+#include <linux/i2c.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/input/kxtj9.h>
+
+#define NAME			"kxtj9"
+#define G_MAX			8000
+/* OUTPUT REGISTERS */
+#define XOUT_L			0x06
+#define WHO_AM_I		0x0F
+/* CONTROL REGISTERS */
+#define INT_REL			0x1A
+#define CTRL_REG1		0x1B
+#define INT_CTRL1		0x1E
+#define DATA_CTRL		0x21
+/* CONTROL REGISTER 1 BITS */
+#define PC1_OFF			0x7F
+#define PC1_ON			(1 << 7)
+/* Data ready funtion enable bit: set during probe if using irq mode */
+#define DRDYE			(1 << 5)
+/* DATA CONTROL REGISTER BITS */
+#define ODR12_5F		0
+#define ODR25F			1
+#define ODR50F			2
+#define ODR100F		3
+#define ODR200F		4
+#define ODR400F		5
+#define ODR800F		6
+/* INTERRUPT CONTROL REGISTER 1 BITS */
+/* Set these during probe if using irq mode */
+#define KXTJ9_IEL		(1 << 3)
+#define KXTJ9_IEA		(1 << 4)
+#define KXTJ9_IEN		(1 << 5)
+/* INPUT_ABS CONSTANTS */
+#define FUZZ			3
+#define FLAT			3
+/* RESUME STATE INDICES */
+#define RES_DATA_CTRL		0
+#define RES_CTRL_REG1		1
+#define RES_INT_CTRL1		2
+#define RESUME_ENTRIES		3
+
+/*
+ * The following table lists the maximum appropriate poll interval for each
+ * available output data rate.
+ */
+static const struct {
+	unsigned int cutoff;
+	u8 mask;
+} kxtj9_odr_table[] = {
+	{ 3,	ODR800F },
+	{ 5,	ODR400F },
+	{ 10,	ODR200F },
+	{ 20,	ODR100F },
+	{ 40,	ODR50F  },
+	{ 80,	ODR25F  },
+	{ 0,	ODR12_5F},
+};
+
+struct kxtj9_data {
+	struct i2c_client *client;
+	struct kxtj9_platform_data pdata;
+	struct input_dev *input_dev;
+	unsigned int last_poll_interval;
+	u8 shift;
+	u8 ctrl_reg1;
+	u8 data_ctrl;
+	u8 int_ctrl;
+};
+
+static int kxtj9_i2c_read(struct kxtj9_data *tj9, u8 addr, u8 *data, int len)
+{
+	struct i2c_msg msgs[] = {
+		{
+			.addr = tj9->client->addr,
+			.flags = tj9->client->flags,
+			.len = 1,
+			.buf = &addr,
+		},
+		{
+			.addr = tj9->client->addr,
+			.flags = tj9->client->flags | I2C_M_RD,
+			.len = len,
+			.buf = data,
+		},
+	};
+
+	return i2c_transfer(tj9->client->adapter, msgs, 2);
+}
+
+static void kxtj9_report_acceleration_data(struct kxtj9_data *tj9)
+{
+	s16 acc_data[3]; /* Data bytes from hardware xL, xH, yL, yH, zL, zH */
+	s16 x, y, z;
+	int err;
+
+	err = kxtj9_i2c_read(tj9, XOUT_L, (u8 *)acc_data, 6);
+	if (err < 0)
+		dev_err(&tj9->client->dev, "accelerometer data read failed\n");
+
+	x = le16_to_cpu(acc_data[tj9->pdata.axis_map_x]);
+	y = le16_to_cpu(acc_data[tj9->pdata.axis_map_y]);
+	z = le16_to_cpu(acc_data[tj9->pdata.axis_map_z]);
+
+	x >>= tj9->shift;
+	y >>= tj9->shift;
+	z >>= tj9->shift;
+
+	input_report_abs(tj9->input_dev, ABS_X, tj9->pdata.negate_x ? -x : x);
+	input_report_abs(tj9->input_dev, ABS_Y, tj9->pdata.negate_y ? -y : y);
+	input_report_abs(tj9->input_dev, ABS_Z, tj9->pdata.negate_z ? -z : z);
+	input_sync(tj9->input_dev);
+}
+
+static irqreturn_t kxtj9_isr(int irq, void *dev)
+{
+	struct kxtj9_data *tj9 = dev;
+	int err;
+
+	/* data ready is the only possible interrupt type */
+	kxtj9_report_acceleration_data(tj9);
+
+	err = i2c_smbus_read_byte_data(tj9->client, INT_REL);
+	if (err < 0)
+		dev_err(&tj9->client->dev,
+			"error clearing interrupt status: %d\n", err);
+
+	return IRQ_HANDLED;
+}
+
+static int kxtj9_update_g_range(struct kxtj9_data *tj9, u8 new_g_range)
+{
+	switch (new_g_range) {
+	case KXTJ9_G_2G:
+		tj9->shift = 4;
+		break;
+	case KXTJ9_G_4G:
+		tj9->shift = 3;
+		break;
+	case KXTJ9_G_8G:
+		tj9->shift = 2;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	tj9->ctrl_reg1 &= 0xe7;
+	tj9->ctrl_reg1 |= new_g_range;
+
+	return 0;
+}
+
+static int kxtj9_update_odr(struct kxtj9_data *tj9, unsigned int poll_interval)
+{
+	int err;
+	int i;
+
+	/* Use the lowest ODR that can support the requested poll interval */
+	for (i = 0; i < ARRAY_SIZE(kxtj9_odr_table); i++) {
+		tj9->data_ctrl = kxtj9_odr_table[i].mask;
+		if (poll_interval < kxtj9_odr_table[i].cutoff)
+			break;
+	}
+
+	err = i2c_smbus_write_byte_data(tj9->client, CTRL_REG1, 0);
+	if (err < 0)
+		return err;
+
+	err = i2c_smbus_write_byte_data(tj9->client, DATA_CTRL, tj9->data_ctrl);
+	if (err < 0)
+		return err;
+
+	err = i2c_smbus_write_byte_data(tj9->client, CTRL_REG1, tj9->ctrl_reg1);
+	if (err < 0)
+		return err;
+
+	return 0;
+}
+
+static int kxtj9_device_power_on(struct kxtj9_data *tj9)
+{
+	if (tj9->pdata.power_on)
+		return tj9->pdata.power_on();
+
+	return 0;
+}
+
+static void kxtj9_device_power_off(struct kxtj9_data *tj9)
+{
+	int err;
+
+	tj9->ctrl_reg1 &= PC1_OFF;
+	err = i2c_smbus_write_byte_data(tj9->client, CTRL_REG1, tj9->ctrl_reg1);
+	if (err < 0)
+		dev_err(&tj9->client->dev, "soft power off failed\n");
+
+	if (tj9->pdata.power_off)
+		tj9->pdata.power_off();
+}
+
+static int kxtj9_enable(struct kxtj9_data *tj9)
+{
+	int err;
+
+	err = kxtj9_device_power_on(tj9);
+	if (err < 0)
+		return err;
+
+	/* ensure that PC1 is cleared before updating control registers */
+	err = i2c_smbus_write_byte_data(tj9->client, CTRL_REG1, 0);
+	if (err < 0)
+		return err;
+
+	/* only write INT_CTRL_REG1 if in irq mode */
+	if (tj9->client->irq) {
+		err = i2c_smbus_write_byte_data(tj9->client,
+						INT_CTRL1, tj9->int_ctrl);
+		if (err < 0)
+			return err;
+	}
+
+	err = kxtj9_update_g_range(tj9, tj9->pdata.g_range);
+	if (err < 0)
+		return err;
+
+	/* turn on outputs */
+	tj9->ctrl_reg1 |= PC1_ON;
+	err = i2c_smbus_write_byte_data(tj9->client, CTRL_REG1, tj9->ctrl_reg1);
+	if (err < 0)
+		return err;
+
+	err = kxtj9_update_odr(tj9, tj9->last_poll_interval);
+	if (err < 0)
+		return err;
+
+	/* clear initial interrupt if in irq mode */
+	if (tj9->client->irq) {
+		err = i2c_smbus_read_byte_data(tj9->client, INT_REL);
+		if (err < 0) {
+			dev_err(&tj9->client->dev,
+				"error clearing interrupt: %d\n", err);
+			goto fail;
+		}
+	}
+
+	return 0;
+
+fail:
+	kxtj9_device_power_off(tj9);
+	return err;
+}
+
+static void kxtj9_disable(struct kxtj9_data *tj9)
+{
+	kxtj9_device_power_off(tj9);
+}
+
+static int kxtj9_input_open(struct input_dev *input)
+{
+	struct kxtj9_data *tj9 = input_get_drvdata(input);
+
+	return kxtj9_enable(tj9);
+}
+
+static void kxtj9_input_close(struct input_dev *dev)
+{
+	struct kxtj9_data *tj9 = input_get_drvdata(dev);
+
+	kxtj9_disable(tj9);
+}
+
+/*
+ * When IRQ mode is selected, we need to provide an interface to allow the user
+ * to change the output data rate of the part.  For consistency, we are using
+ * the set_poll method, which accepts a poll interval in milliseconds, and then
+ * calls update_odr() while passing this value as an argument.  In IRQ mode, the
+ * data outputs will not be read AT the requested poll interval, rather, the
+ * lowest ODR that can support the requested interval.  The client application
+ * will be responsible for retrieving data from the input node at the desired
+ * interval.
+ */
+
+/* Returns currently selected poll interval (in ms) */
+static ssize_t kxtj9_get_poll(struct device *dev,
+				struct device_attribute *attr, char *buf)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct kxtj9_data *tj9 = i2c_get_clientdata(client);
+
+	return sprintf(buf, "%d\n", tj9->last_poll_interval);
+}
+
+/* Allow users to select a new poll interval (in ms) */
+static ssize_t kxtj9_set_poll(struct device *dev, struct device_attribute *attr,
+						const char *buf, size_t count)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct kxtj9_data *tj9 = i2c_get_clientdata(client);
+	struct input_dev *input_dev = tj9->input_dev;
+	unsigned int interval;
+	int error;
+
+	error = kstrtouint(buf, 10, &interval);
+	if (error < 0)
+		return error;
+
+	/* Lock the device to prevent races with open/close (and itself) */
+	mutex_lock(&input_dev->mutex);
+
+	disable_irq(client->irq);
+
+	/*
+	 * Set current interval to the greater of the minimum interval or
+	 * the requested interval
+	 */
+	tj9->last_poll_interval = max(interval, tj9->pdata.min_interval);
+
+	kxtj9_update_odr(tj9, tj9->last_poll_interval);
+
+	enable_irq(client->irq);
+	mutex_unlock(&input_dev->mutex);
+
+	return count;
+}
+
+static DEVICE_ATTR(poll, S_IRUGO|S_IWUSR, kxtj9_get_poll, kxtj9_set_poll);
+
+static struct attribute *kxtj9_attributes[] = {
+	&dev_attr_poll.attr,
+	NULL
+};
+
+static struct attribute_group kxtj9_attribute_group = {
+	.attrs = kxtj9_attributes
+};
+
+static void kxtj9_poll(struct input_dev *input)
+{
+	struct kxtj9_data *tj9 = input_get_drvdata(input);
+	unsigned int poll_interval = input_get_poll_interval(input);
+
+	kxtj9_report_acceleration_data(tj9);
+
+	if (poll_interval != tj9->last_poll_interval) {
+		kxtj9_update_odr(tj9, poll_interval);
+		tj9->last_poll_interval = poll_interval;
+	}
+}
+
+static void kxtj9_platform_exit(void *data)
+{
+	struct kxtj9_data *tj9 = data;
+
+	if (tj9->pdata.exit)
+		tj9->pdata.exit();
+}
+
+static int kxtj9_verify(struct kxtj9_data *tj9)
+{
+	int retval;
+
+	retval = kxtj9_device_power_on(tj9);
+	if (retval < 0)
+		return retval;
+
+	retval = i2c_smbus_read_byte_data(tj9->client, WHO_AM_I);
+	if (retval < 0) {
+		dev_err(&tj9->client->dev, "read err int source\n");
+		goto out;
+	}
+
+	retval = (retval != 0x07 && retval != 0x08) ? -EIO : 0;
+
+out:
+	kxtj9_device_power_off(tj9);
+	return retval;
+}
+
+static int kxtj9_probe(struct i2c_client *client,
+		       const struct i2c_device_id *id)
+{
+	const struct kxtj9_platform_data *pdata =
+			dev_get_platdata(&client->dev);
+	struct kxtj9_data *tj9;
+	struct input_dev *input_dev;
+	int err;
+
+	if (!i2c_check_functionality(client->adapter,
+				I2C_FUNC_I2C | I2C_FUNC_SMBUS_BYTE_DATA)) {
+		dev_err(&client->dev, "client is not i2c capable\n");
+		return -ENXIO;
+	}
+
+	if (!pdata) {
+		dev_err(&client->dev, "platform data is NULL; exiting\n");
+		return -EINVAL;
+	}
+
+	tj9 = devm_kzalloc(&client->dev, sizeof(*tj9), GFP_KERNEL);
+	if (!tj9) {
+		dev_err(&client->dev,
+			"failed to allocate memory for module data\n");
+		return -ENOMEM;
+	}
+
+	tj9->client = client;
+	tj9->pdata = *pdata;
+
+	if (pdata->init) {
+		err = pdata->init();
+		if (err < 0)
+			return err;
+	}
+
+	err = devm_add_action_or_reset(&client->dev, kxtj9_platform_exit, tj9);
+	if (err)
+		return err;
+
+	err = kxtj9_verify(tj9);
+	if (err < 0) {
+		dev_err(&client->dev, "device not recognized\n");
+		return err;
+	}
+
+	i2c_set_clientdata(client, tj9);
+
+	tj9->ctrl_reg1 = tj9->pdata.res_12bit | tj9->pdata.g_range;
+	tj9->last_poll_interval = tj9->pdata.init_interval;
+
+	input_dev = devm_input_allocate_device(&client->dev);
+	if (!input_dev) {
+		dev_err(&client->dev, "input device allocate failed\n");
+		return -ENOMEM;
+	}
+
+	input_set_drvdata(input_dev, tj9);
+	tj9->input_dev = input_dev;
+
+	input_dev->name = "kxtj9_accel";
+	input_dev->id.bustype = BUS_I2C;
+
+	input_dev->open = kxtj9_input_open;
+	input_dev->close = kxtj9_input_close;
+
+	input_set_abs_params(input_dev, ABS_X, -G_MAX, G_MAX, FUZZ, FLAT);
+	input_set_abs_params(input_dev, ABS_Y, -G_MAX, G_MAX, FUZZ, FLAT);
+	input_set_abs_params(input_dev, ABS_Z, -G_MAX, G_MAX, FUZZ, FLAT);
+
+	if (client->irq <= 0) {
+		err = input_setup_polling(input_dev, kxtj9_poll);
+		if (err)
+			return err;
+	}
+
+	err = input_register_device(input_dev);
+	if (err) {
+		dev_err(&client->dev,
+			"unable to register input polled device %s: %d\n",
+			input_dev->name, err);
+		return err;
+	}
+
+	if (client->irq) {
+		/* If in irq mode, populate INT_CTRL_REG1 and enable DRDY. */
+		tj9->int_ctrl |= KXTJ9_IEN | KXTJ9_IEA | KXTJ9_IEL;
+		tj9->ctrl_reg1 |= DRDYE;
+
+		err = devm_request_threaded_irq(&client->dev, client->irq,
+						NULL, kxtj9_isr,
+						IRQF_TRIGGER_RISING |
+							IRQF_ONESHOT,
+						"kxtj9-irq", tj9);
+		if (err) {
+			dev_err(&client->dev, "request irq failed: %d\n", err);
+			return err;
+		}
+
+		err = devm_device_add_group(&client->dev,
+					    &kxtj9_attribute_group);
+		if (err) {
+			dev_err(&client->dev, "sysfs create failed: %d\n", err);
+			return err;
+		}
+	}
+
+	return 0;
+}
+
+static int __maybe_unused kxtj9_suspend(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct kxtj9_data *tj9 = i2c_get_clientdata(client);
+	struct input_dev *input_dev = tj9->input_dev;
+
+	mutex_lock(&input_dev->mutex);
+
+	if (input_device_enabled(input_dev))
+		kxtj9_disable(tj9);
+
+	mutex_unlock(&input_dev->mutex);
+	return 0;
+}
+
+static int __maybe_unused kxtj9_resume(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct kxtj9_data *tj9 = i2c_get_clientdata(client);
+	struct input_dev *input_dev = tj9->input_dev;
+
+	mutex_lock(&input_dev->mutex);
+
+	if (input_device_enabled(input_dev))
+		kxtj9_enable(tj9);
+
+	mutex_unlock(&input_dev->mutex);
+	return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(kxtj9_pm_ops, kxtj9_suspend, kxtj9_resume);
+
+static const struct i2c_device_id kxtj9_id[] = {
+	{ NAME, 0 },
+	{ },
+};
+
+MODULE_DEVICE_TABLE(i2c, kxtj9_id);
+
+static struct i2c_driver kxtj9_driver = {
+	.driver = {
+		.name	= NAME,
+		.pm	= &kxtj9_pm_ops,
+	},
+	.probe		= kxtj9_probe,
+	.id_table	= kxtj9_id,
+};
+
+module_i2c_driver(kxtj9_driver);
+
+MODULE_DESCRIPTION("KXTJ9 accelerometer driver");
+MODULE_AUTHOR("Chris Hudson <chudson@kionix.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/misc/m68kspkr.c b/drivers/input/misc/m68kspkr.c
new file mode 100644
index 000000000..25fcf1467
--- /dev/null
+++ b/drivers/input/misc/m68kspkr.c
@@ -0,0 +1,144 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ *  m68k beeper driver for Linux
+ *
+ *  Copyright (c) 2002 Richard Zidlicky
+ *  Copyright (c) 2002 Vojtech Pavlik
+ *  Copyright (c) 1992 Orest Zborowski
+ */
+
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/input.h>
+#include <linux/platform_device.h>
+#include <asm/machdep.h>
+#include <asm/io.h>
+
+MODULE_AUTHOR("Richard Zidlicky <rz@linux-m68k.org>");
+MODULE_DESCRIPTION("m68k beeper driver");
+MODULE_LICENSE("GPL");
+
+static struct platform_device *m68kspkr_platform_device;
+
+static int m68kspkr_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
+{
+	unsigned int count = 0;
+
+	if (type != EV_SND)
+		return -1;
+
+	switch (code) {
+		case SND_BELL: if (value) value = 1000;
+		case SND_TONE: break;
+		default: return -1;
+	}
+
+	if (value > 20 && value < 32767)
+		count = 1193182 / value;
+
+	mach_beep(count, -1);
+
+	return 0;
+}
+
+static int m68kspkr_probe(struct platform_device *dev)
+{
+	struct input_dev *input_dev;
+	int err;
+
+	input_dev = input_allocate_device();
+	if (!input_dev)
+		return -ENOMEM;
+
+	input_dev->name = "m68k beeper";
+	input_dev->phys = "m68k/generic";
+	input_dev->id.bustype = BUS_HOST;
+	input_dev->id.vendor  = 0x001f;
+	input_dev->id.product = 0x0001;
+	input_dev->id.version = 0x0100;
+	input_dev->dev.parent = &dev->dev;
+
+	input_dev->evbit[0] = BIT_MASK(EV_SND);
+	input_dev->sndbit[0] = BIT_MASK(SND_BELL) | BIT_MASK(SND_TONE);
+	input_dev->event = m68kspkr_event;
+
+	err = input_register_device(input_dev);
+	if (err) {
+		input_free_device(input_dev);
+		return err;
+	}
+
+	platform_set_drvdata(dev, input_dev);
+
+	return 0;
+}
+
+static int m68kspkr_remove(struct platform_device *dev)
+{
+	struct input_dev *input_dev = platform_get_drvdata(dev);
+
+	input_unregister_device(input_dev);
+	/* turn off the speaker */
+	m68kspkr_event(NULL, EV_SND, SND_BELL, 0);
+
+	return 0;
+}
+
+static void m68kspkr_shutdown(struct platform_device *dev)
+{
+	/* turn off the speaker */
+	m68kspkr_event(NULL, EV_SND, SND_BELL, 0);
+}
+
+static struct platform_driver m68kspkr_platform_driver = {
+	.driver		= {
+		.name	= "m68kspkr",
+	},
+	.probe		= m68kspkr_probe,
+	.remove		= m68kspkr_remove,
+	.shutdown	= m68kspkr_shutdown,
+};
+
+static int __init m68kspkr_init(void)
+{
+	int err;
+
+	if (!mach_beep) {
+		printk(KERN_INFO "m68kspkr: no lowlevel beep support\n");
+		return -ENODEV;
+        }
+
+	err = platform_driver_register(&m68kspkr_platform_driver);
+	if (err)
+		return err;
+
+	m68kspkr_platform_device = platform_device_alloc("m68kspkr", -1);
+	if (!m68kspkr_platform_device) {
+		err = -ENOMEM;
+		goto err_unregister_driver;
+	}
+
+	err = platform_device_add(m68kspkr_platform_device);
+	if (err)
+		goto err_free_device;
+
+	return 0;
+
+ err_free_device:
+	platform_device_put(m68kspkr_platform_device);
+ err_unregister_driver:
+	platform_driver_unregister(&m68kspkr_platform_driver);
+
+	return err;
+}
+
+static void __exit m68kspkr_exit(void)
+{
+	platform_device_unregister(m68kspkr_platform_device);
+	platform_driver_unregister(&m68kspkr_platform_driver);
+}
+
+module_init(m68kspkr_init);
+module_exit(m68kspkr_exit);
diff --git a/drivers/input/misc/max77650-onkey.c b/drivers/input/misc/max77650-onkey.c
new file mode 100644
index 000000000..ee55f22db
--- /dev/null
+++ b/drivers/input/misc/max77650-onkey.c
@@ -0,0 +1,129 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// Copyright (C) 2018 BayLibre SAS
+// Author: Bartosz Golaszewski <bgolaszewski@baylibre.com>
+//
+// ONKEY driver for MAXIM 77650/77651 charger/power-supply.
+
+#include <linux/i2c.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/mfd/max77650.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+
+#define MAX77650_ONKEY_MODE_MASK	BIT(3)
+#define MAX77650_ONKEY_MODE_PUSH	0x00
+#define MAX77650_ONKEY_MODE_SLIDE	BIT(3)
+
+struct max77650_onkey {
+	struct input_dev *input;
+	unsigned int code;
+};
+
+static irqreturn_t max77650_onkey_falling(int irq, void *data)
+{
+	struct max77650_onkey *onkey = data;
+
+	input_report_key(onkey->input, onkey->code, 0);
+	input_sync(onkey->input);
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t max77650_onkey_rising(int irq, void *data)
+{
+	struct max77650_onkey *onkey = data;
+
+	input_report_key(onkey->input, onkey->code, 1);
+	input_sync(onkey->input);
+
+	return IRQ_HANDLED;
+}
+
+static int max77650_onkey_probe(struct platform_device *pdev)
+{
+	int irq_r, irq_f, error, mode;
+	struct max77650_onkey *onkey;
+	struct device *dev, *parent;
+	struct regmap *map;
+	unsigned int type;
+
+	dev = &pdev->dev;
+	parent = dev->parent;
+
+	map = dev_get_regmap(parent, NULL);
+	if (!map)
+		return -ENODEV;
+
+	onkey = devm_kzalloc(dev, sizeof(*onkey), GFP_KERNEL);
+	if (!onkey)
+		return -ENOMEM;
+
+	error = device_property_read_u32(dev, "linux,code", &onkey->code);
+	if (error)
+		onkey->code = KEY_POWER;
+
+	if (device_property_read_bool(dev, "maxim,onkey-slide")) {
+		mode = MAX77650_ONKEY_MODE_SLIDE;
+		type = EV_SW;
+	} else {
+		mode = MAX77650_ONKEY_MODE_PUSH;
+		type = EV_KEY;
+	}
+
+	error = regmap_update_bits(map, MAX77650_REG_CNFG_GLBL,
+				   MAX77650_ONKEY_MODE_MASK, mode);
+	if (error)
+		return error;
+
+	irq_f = platform_get_irq_byname(pdev, "nEN_F");
+	if (irq_f < 0)
+		return irq_f;
+
+	irq_r = platform_get_irq_byname(pdev, "nEN_R");
+	if (irq_r < 0)
+		return irq_r;
+
+	onkey->input = devm_input_allocate_device(dev);
+	if (!onkey->input)
+		return -ENOMEM;
+
+	onkey->input->name = "max77650_onkey";
+	onkey->input->phys = "max77650_onkey/input0";
+	onkey->input->id.bustype = BUS_I2C;
+	input_set_capability(onkey->input, type, onkey->code);
+
+	error = devm_request_any_context_irq(dev, irq_f, max77650_onkey_falling,
+					     IRQF_ONESHOT, "onkey-down", onkey);
+	if (error < 0)
+		return error;
+
+	error = devm_request_any_context_irq(dev, irq_r, max77650_onkey_rising,
+					     IRQF_ONESHOT, "onkey-up", onkey);
+	if (error < 0)
+		return error;
+
+	return input_register_device(onkey->input);
+}
+
+static const struct of_device_id max77650_onkey_of_match[] = {
+	{ .compatible = "maxim,max77650-onkey" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, max77650_onkey_of_match);
+
+static struct platform_driver max77650_onkey_driver = {
+	.driver = {
+		.name = "max77650-onkey",
+		.of_match_table = max77650_onkey_of_match,
+	},
+	.probe = max77650_onkey_probe,
+};
+module_platform_driver(max77650_onkey_driver);
+
+MODULE_DESCRIPTION("MAXIM 77650/77651 ONKEY driver");
+MODULE_AUTHOR("Bartosz Golaszewski <bgolaszewski@baylibre.com>");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:max77650-onkey");
diff --git a/drivers/input/misc/max77693-haptic.c b/drivers/input/misc/max77693-haptic.c
new file mode 100644
index 000000000..4369d3c04
--- /dev/null
+++ b/drivers/input/misc/max77693-haptic.c
@@ -0,0 +1,427 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * MAXIM MAX77693/MAX77843 Haptic device driver
+ *
+ * Copyright (C) 2014,2015 Samsung Electronics
+ * Jaewon Kim <jaewon02.kim@samsung.com>
+ * Krzysztof Kozlowski <krzk@kernel.org>
+ *
+ * This program is not provided / owned by Maxim Integrated Products.
+ */
+
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/i2c.h>
+#include <linux/regmap.h>
+#include <linux/input.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/pwm.h>
+#include <linux/slab.h>
+#include <linux/workqueue.h>
+#include <linux/regulator/consumer.h>
+#include <linux/mfd/max77693.h>
+#include <linux/mfd/max77693-common.h>
+#include <linux/mfd/max77693-private.h>
+#include <linux/mfd/max77843-private.h>
+
+#define MAX_MAGNITUDE_SHIFT	16
+
+enum max77693_haptic_motor_type {
+	MAX77693_HAPTIC_ERM = 0,
+	MAX77693_HAPTIC_LRA,
+};
+
+enum max77693_haptic_pulse_mode {
+	MAX77693_HAPTIC_EXTERNAL_MODE = 0,
+	MAX77693_HAPTIC_INTERNAL_MODE,
+};
+
+enum max77693_haptic_pwm_divisor {
+	MAX77693_HAPTIC_PWM_DIVISOR_32 = 0,
+	MAX77693_HAPTIC_PWM_DIVISOR_64,
+	MAX77693_HAPTIC_PWM_DIVISOR_128,
+	MAX77693_HAPTIC_PWM_DIVISOR_256,
+};
+
+struct max77693_haptic {
+	enum max77693_types dev_type;
+
+	struct regmap *regmap_pmic;
+	struct regmap *regmap_haptic;
+	struct device *dev;
+	struct input_dev *input_dev;
+	struct pwm_device *pwm_dev;
+	struct regulator *motor_reg;
+
+	bool enabled;
+	bool suspend_state;
+	unsigned int magnitude;
+	unsigned int pwm_duty;
+	enum max77693_haptic_motor_type type;
+	enum max77693_haptic_pulse_mode mode;
+
+	struct work_struct work;
+};
+
+static int max77693_haptic_set_duty_cycle(struct max77693_haptic *haptic)
+{
+	struct pwm_args pargs;
+	int delta;
+	int error;
+
+	pwm_get_args(haptic->pwm_dev, &pargs);
+	delta = (pargs.period + haptic->pwm_duty) / 2;
+	error = pwm_config(haptic->pwm_dev, delta, pargs.period);
+	if (error) {
+		dev_err(haptic->dev, "failed to configure pwm: %d\n", error);
+		return error;
+	}
+
+	return 0;
+}
+
+static int max77843_haptic_bias(struct max77693_haptic *haptic, bool on)
+{
+	int error;
+
+	if (haptic->dev_type != TYPE_MAX77843)
+		return 0;
+
+	error = regmap_update_bits(haptic->regmap_haptic,
+				   MAX77843_SYS_REG_MAINCTRL1,
+				   MAX77843_MAINCTRL1_BIASEN_MASK,
+				   on << MAINCTRL1_BIASEN_SHIFT);
+	if (error) {
+		dev_err(haptic->dev, "failed to %s bias: %d\n",
+			on ? "enable" : "disable", error);
+		return error;
+	}
+
+	return 0;
+}
+
+static int max77693_haptic_configure(struct max77693_haptic *haptic,
+				     bool enable)
+{
+	unsigned int value, config_reg;
+	int error;
+
+	switch (haptic->dev_type) {
+	case TYPE_MAX77693:
+		value = ((haptic->type << MAX77693_CONFIG2_MODE) |
+			(enable << MAX77693_CONFIG2_MEN) |
+			(haptic->mode << MAX77693_CONFIG2_HTYP) |
+			MAX77693_HAPTIC_PWM_DIVISOR_128);
+		config_reg = MAX77693_HAPTIC_REG_CONFIG2;
+		break;
+	case TYPE_MAX77843:
+		value = (haptic->type << MCONFIG_MODE_SHIFT) |
+			(enable << MCONFIG_MEN_SHIFT) |
+			MAX77693_HAPTIC_PWM_DIVISOR_128;
+		config_reg = MAX77843_HAP_REG_MCONFIG;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	error = regmap_write(haptic->regmap_haptic,
+			     config_reg, value);
+	if (error) {
+		dev_err(haptic->dev,
+			"failed to update haptic config: %d\n", error);
+		return error;
+	}
+
+	return 0;
+}
+
+static int max77693_haptic_lowsys(struct max77693_haptic *haptic, bool enable)
+{
+	int error;
+
+	if (haptic->dev_type != TYPE_MAX77693)
+		return 0;
+
+	error = regmap_update_bits(haptic->regmap_pmic,
+				   MAX77693_PMIC_REG_LSCNFG,
+				   MAX77693_PMIC_LOW_SYS_MASK,
+				   enable << MAX77693_PMIC_LOW_SYS_SHIFT);
+	if (error) {
+		dev_err(haptic->dev, "cannot update pmic regmap: %d\n", error);
+		return error;
+	}
+
+	return 0;
+}
+
+static void max77693_haptic_enable(struct max77693_haptic *haptic)
+{
+	int error;
+
+	if (haptic->enabled)
+		return;
+
+	error = pwm_enable(haptic->pwm_dev);
+	if (error) {
+		dev_err(haptic->dev,
+			"failed to enable haptic pwm device: %d\n", error);
+		return;
+	}
+
+	error = max77693_haptic_lowsys(haptic, true);
+	if (error)
+		goto err_enable_lowsys;
+
+	error = max77693_haptic_configure(haptic, true);
+	if (error)
+		goto err_enable_config;
+
+	haptic->enabled = true;
+
+	return;
+
+err_enable_config:
+	max77693_haptic_lowsys(haptic, false);
+err_enable_lowsys:
+	pwm_disable(haptic->pwm_dev);
+}
+
+static void max77693_haptic_disable(struct max77693_haptic *haptic)
+{
+	int error;
+
+	if (!haptic->enabled)
+		return;
+
+	error = max77693_haptic_configure(haptic, false);
+	if (error)
+		return;
+
+	error = max77693_haptic_lowsys(haptic, false);
+	if (error)
+		goto err_disable_lowsys;
+
+	pwm_disable(haptic->pwm_dev);
+	haptic->enabled = false;
+
+	return;
+
+err_disable_lowsys:
+	max77693_haptic_configure(haptic, true);
+}
+
+static void max77693_haptic_play_work(struct work_struct *work)
+{
+	struct max77693_haptic *haptic =
+			container_of(work, struct max77693_haptic, work);
+	int error;
+
+	error = max77693_haptic_set_duty_cycle(haptic);
+	if (error) {
+		dev_err(haptic->dev, "failed to set duty cycle: %d\n", error);
+		return;
+	}
+
+	if (haptic->magnitude)
+		max77693_haptic_enable(haptic);
+	else
+		max77693_haptic_disable(haptic);
+}
+
+static int max77693_haptic_play_effect(struct input_dev *dev, void *data,
+				       struct ff_effect *effect)
+{
+	struct max77693_haptic *haptic = input_get_drvdata(dev);
+	struct pwm_args pargs;
+	u64 period_mag_multi;
+
+	haptic->magnitude = effect->u.rumble.strong_magnitude;
+	if (!haptic->magnitude)
+		haptic->magnitude = effect->u.rumble.weak_magnitude;
+
+	/*
+	 * The magnitude comes from force-feedback interface.
+	 * The formula to convert magnitude to pwm_duty as follows:
+	 * - pwm_duty = (magnitude * pwm_period) / MAX_MAGNITUDE(0xFFFF)
+	 */
+	pwm_get_args(haptic->pwm_dev, &pargs);
+	period_mag_multi = (u64)pargs.period * haptic->magnitude;
+	haptic->pwm_duty = (unsigned int)(period_mag_multi >>
+						MAX_MAGNITUDE_SHIFT);
+
+	schedule_work(&haptic->work);
+
+	return 0;
+}
+
+static int max77693_haptic_open(struct input_dev *dev)
+{
+	struct max77693_haptic *haptic = input_get_drvdata(dev);
+	int error;
+
+	error = max77843_haptic_bias(haptic, true);
+	if (error)
+		return error;
+
+	error = regulator_enable(haptic->motor_reg);
+	if (error) {
+		dev_err(haptic->dev,
+			"failed to enable regulator: %d\n", error);
+		return error;
+	}
+
+	return 0;
+}
+
+static void max77693_haptic_close(struct input_dev *dev)
+{
+	struct max77693_haptic *haptic = input_get_drvdata(dev);
+	int error;
+
+	cancel_work_sync(&haptic->work);
+	max77693_haptic_disable(haptic);
+
+	error = regulator_disable(haptic->motor_reg);
+	if (error)
+		dev_err(haptic->dev,
+			"failed to disable regulator: %d\n", error);
+
+	max77843_haptic_bias(haptic, false);
+}
+
+static int max77693_haptic_probe(struct platform_device *pdev)
+{
+	struct max77693_dev *max77693 = dev_get_drvdata(pdev->dev.parent);
+	struct max77693_haptic *haptic;
+	int error;
+
+	haptic = devm_kzalloc(&pdev->dev, sizeof(*haptic), GFP_KERNEL);
+	if (!haptic)
+		return -ENOMEM;
+
+	haptic->regmap_pmic = max77693->regmap;
+	haptic->dev = &pdev->dev;
+	haptic->type = MAX77693_HAPTIC_LRA;
+	haptic->mode = MAX77693_HAPTIC_EXTERNAL_MODE;
+	haptic->suspend_state = false;
+
+	/* Variant-specific init */
+	haptic->dev_type = platform_get_device_id(pdev)->driver_data;
+	switch (haptic->dev_type) {
+	case TYPE_MAX77693:
+		haptic->regmap_haptic = max77693->regmap_haptic;
+		break;
+	case TYPE_MAX77843:
+		haptic->regmap_haptic = max77693->regmap;
+		break;
+	default:
+		dev_err(&pdev->dev, "unsupported device type: %u\n",
+			haptic->dev_type);
+		return -EINVAL;
+	}
+
+	INIT_WORK(&haptic->work, max77693_haptic_play_work);
+
+	/* Get pwm and regulatot for haptic device */
+	haptic->pwm_dev = devm_pwm_get(&pdev->dev, NULL);
+	if (IS_ERR(haptic->pwm_dev)) {
+		dev_err(&pdev->dev, "failed to get pwm device\n");
+		return PTR_ERR(haptic->pwm_dev);
+	}
+
+	/*
+	 * FIXME: pwm_apply_args() should be removed when switching to the
+	 * atomic PWM API.
+	 */
+	pwm_apply_args(haptic->pwm_dev);
+
+	haptic->motor_reg = devm_regulator_get(&pdev->dev, "haptic");
+	if (IS_ERR(haptic->motor_reg)) {
+		dev_err(&pdev->dev, "failed to get regulator\n");
+		return PTR_ERR(haptic->motor_reg);
+	}
+
+	/* Initialize input device for haptic device */
+	haptic->input_dev = devm_input_allocate_device(&pdev->dev);
+	if (!haptic->input_dev) {
+		dev_err(&pdev->dev, "failed to allocate input device\n");
+		return -ENOMEM;
+	}
+
+	haptic->input_dev->name = "max77693-haptic";
+	haptic->input_dev->id.version = 1;
+	haptic->input_dev->dev.parent = &pdev->dev;
+	haptic->input_dev->open = max77693_haptic_open;
+	haptic->input_dev->close = max77693_haptic_close;
+	input_set_drvdata(haptic->input_dev, haptic);
+	input_set_capability(haptic->input_dev, EV_FF, FF_RUMBLE);
+
+	error = input_ff_create_memless(haptic->input_dev, NULL,
+				max77693_haptic_play_effect);
+	if (error) {
+		dev_err(&pdev->dev, "failed to create force-feedback\n");
+		return error;
+	}
+
+	error = input_register_device(haptic->input_dev);
+	if (error) {
+		dev_err(&pdev->dev, "failed to register input device\n");
+		return error;
+	}
+
+	platform_set_drvdata(pdev, haptic);
+
+	return 0;
+}
+
+static int __maybe_unused max77693_haptic_suspend(struct device *dev)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct max77693_haptic *haptic = platform_get_drvdata(pdev);
+
+	if (haptic->enabled) {
+		max77693_haptic_disable(haptic);
+		haptic->suspend_state = true;
+	}
+
+	return 0;
+}
+
+static int __maybe_unused max77693_haptic_resume(struct device *dev)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct max77693_haptic *haptic = platform_get_drvdata(pdev);
+
+	if (haptic->suspend_state) {
+		max77693_haptic_enable(haptic);
+		haptic->suspend_state = false;
+	}
+
+	return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(max77693_haptic_pm_ops,
+			 max77693_haptic_suspend, max77693_haptic_resume);
+
+static const struct platform_device_id max77693_haptic_id[] = {
+	{ "max77693-haptic", TYPE_MAX77693 },
+	{ "max77843-haptic", TYPE_MAX77843 },
+	{},
+};
+MODULE_DEVICE_TABLE(platform, max77693_haptic_id);
+
+static struct platform_driver max77693_haptic_driver = {
+	.driver		= {
+		.name	= "max77693-haptic",
+		.pm	= &max77693_haptic_pm_ops,
+	},
+	.probe		= max77693_haptic_probe,
+	.id_table	= max77693_haptic_id,
+};
+module_platform_driver(max77693_haptic_driver);
+
+MODULE_AUTHOR("Jaewon Kim <jaewon02.kim@samsung.com>");
+MODULE_AUTHOR("Krzysztof Kozlowski <krzk@kernel.org>");
+MODULE_DESCRIPTION("MAXIM 77693/77843 Haptic driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/misc/max8925_onkey.c b/drivers/input/misc/max8925_onkey.c
new file mode 100644
index 000000000..4770cb556
--- /dev/null
+++ b/drivers/input/misc/max8925_onkey.c
@@ -0,0 +1,173 @@
+/*
+ * MAX8925 ONKEY driver
+ *
+ * Copyright (C) 2009 Marvell International Ltd.
+ *      Haojian Zhuang <haojian.zhuang@marvell.com>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License. See the file "COPYING" in the main directory of this
+ * archive for more details.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/i2c.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/mfd/max8925.h>
+#include <linux/slab.h>
+#include <linux/device.h>
+
+#define SW_INPUT		(1 << 7)	/* 0/1 -- up/down */
+#define HARDRESET_EN		(1 << 7)
+#define PWREN_EN		(1 << 7)
+
+struct max8925_onkey_info {
+	struct input_dev	*idev;
+	struct i2c_client	*i2c;
+	struct device		*dev;
+	unsigned int		irq[2];
+};
+
+/*
+ * MAX8925 gives us an interrupt when ONKEY is pressed or released.
+ * max8925_set_bits() operates I2C bus and may sleep. So implement
+ * it in thread IRQ handler.
+ */
+static irqreturn_t max8925_onkey_handler(int irq, void *data)
+{
+	struct max8925_onkey_info *info = data;
+	int state;
+
+	state = max8925_reg_read(info->i2c, MAX8925_ON_OFF_STATUS);
+
+	input_report_key(info->idev, KEY_POWER, state & SW_INPUT);
+	input_sync(info->idev);
+
+	dev_dbg(info->dev, "onkey state:%d\n", state);
+
+	/* Enable hardreset to halt if system isn't shutdown on time */
+	max8925_set_bits(info->i2c, MAX8925_SYSENSEL,
+			 HARDRESET_EN, HARDRESET_EN);
+
+	return IRQ_HANDLED;
+}
+
+static int max8925_onkey_probe(struct platform_device *pdev)
+{
+	struct max8925_chip *chip = dev_get_drvdata(pdev->dev.parent);
+	struct max8925_onkey_info *info;
+	struct input_dev *input;
+	int irq[2], error;
+
+	irq[0] = platform_get_irq(pdev, 0);
+	if (irq[0] < 0)
+		return -EINVAL;
+
+	irq[1] = platform_get_irq(pdev, 1);
+	if (irq[1] < 0)
+		return -EINVAL;
+
+	info = devm_kzalloc(&pdev->dev, sizeof(struct max8925_onkey_info),
+			    GFP_KERNEL);
+	if (!info)
+		return -ENOMEM;
+
+	input = devm_input_allocate_device(&pdev->dev);
+	if (!input)
+		return -ENOMEM;
+
+	info->idev = input;
+	info->i2c = chip->i2c;
+	info->dev = &pdev->dev;
+	info->irq[0] = irq[0];
+	info->irq[1] = irq[1];
+
+	input->name = "max8925_on";
+	input->phys = "max8925_on/input0";
+	input->id.bustype = BUS_I2C;
+	input->dev.parent = &pdev->dev;
+	input_set_capability(input, EV_KEY, KEY_POWER);
+
+	error = devm_request_threaded_irq(&pdev->dev, irq[0], NULL,
+					  max8925_onkey_handler, IRQF_ONESHOT,
+					  "onkey-down", info);
+	if (error < 0) {
+		dev_err(chip->dev, "Failed to request IRQ: #%d: %d\n",
+			irq[0], error);
+		return error;
+	}
+
+	error = devm_request_threaded_irq(&pdev->dev, irq[1], NULL,
+					  max8925_onkey_handler, IRQF_ONESHOT,
+					  "onkey-up", info);
+	if (error < 0) {
+		dev_err(chip->dev, "Failed to request IRQ: #%d: %d\n",
+			irq[1], error);
+		return error;
+	}
+
+	error = input_register_device(info->idev);
+	if (error) {
+		dev_err(chip->dev, "Can't register input device: %d\n", error);
+		return error;
+	}
+
+	platform_set_drvdata(pdev, info);
+	device_init_wakeup(&pdev->dev, 1);
+
+	return 0;
+}
+
+static int __maybe_unused max8925_onkey_suspend(struct device *dev)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct max8925_onkey_info *info = platform_get_drvdata(pdev);
+	struct max8925_chip *chip = dev_get_drvdata(pdev->dev.parent);
+
+	if (device_may_wakeup(dev)) {
+		chip->wakeup_flag |= 1 << info->irq[0];
+		chip->wakeup_flag |= 1 << info->irq[1];
+	}
+
+	return 0;
+}
+
+static int __maybe_unused max8925_onkey_resume(struct device *dev)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct max8925_onkey_info *info = platform_get_drvdata(pdev);
+	struct max8925_chip *chip = dev_get_drvdata(pdev->dev.parent);
+
+	if (device_may_wakeup(dev)) {
+		chip->wakeup_flag &= ~(1 << info->irq[0]);
+		chip->wakeup_flag &= ~(1 << info->irq[1]);
+	}
+
+	return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(max8925_onkey_pm_ops, max8925_onkey_suspend, max8925_onkey_resume);
+
+static struct platform_driver max8925_onkey_driver = {
+	.driver		= {
+		.name	= "max8925-onkey",
+		.pm	= &max8925_onkey_pm_ops,
+	},
+	.probe		= max8925_onkey_probe,
+};
+module_platform_driver(max8925_onkey_driver);
+
+MODULE_DESCRIPTION("Maxim MAX8925 ONKEY driver");
+MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/misc/max8997_haptic.c b/drivers/input/misc/max8997_haptic.c
new file mode 100644
index 000000000..cd5e99ec1
--- /dev/null
+++ b/drivers/input/misc/max8997_haptic.c
@@ -0,0 +1,401 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * MAX8997-haptic controller driver
+ *
+ * Copyright (C) 2012 Samsung Electronics
+ * Donggeun Kim <dg77.kim@samsung.com>
+ *
+ * This program is not provided / owned by Maxim Integrated Products.
+ */
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/platform_device.h>
+#include <linux/err.h>
+#include <linux/pwm.h>
+#include <linux/input.h>
+#include <linux/mfd/max8997-private.h>
+#include <linux/mfd/max8997.h>
+#include <linux/regulator/consumer.h>
+
+/* Haptic configuration 2 register */
+#define MAX8997_MOTOR_TYPE_SHIFT	7
+#define MAX8997_ENABLE_SHIFT		6
+#define MAX8997_MODE_SHIFT		5
+
+/* Haptic driver configuration register */
+#define MAX8997_CYCLE_SHIFT		6
+#define MAX8997_SIG_PERIOD_SHIFT	4
+#define MAX8997_SIG_DUTY_SHIFT		2
+#define MAX8997_PWM_DUTY_SHIFT		0
+
+struct max8997_haptic {
+	struct device *dev;
+	struct i2c_client *client;
+	struct input_dev *input_dev;
+	struct regulator *regulator;
+
+	struct work_struct work;
+	struct mutex mutex;
+
+	bool enabled;
+	unsigned int level;
+
+	struct pwm_device *pwm;
+	unsigned int pwm_period;
+	enum max8997_haptic_pwm_divisor pwm_divisor;
+
+	enum max8997_haptic_motor_type type;
+	enum max8997_haptic_pulse_mode mode;
+
+	unsigned int internal_mode_pattern;
+	unsigned int pattern_cycle;
+	unsigned int pattern_signal_period;
+};
+
+static int max8997_haptic_set_duty_cycle(struct max8997_haptic *chip)
+{
+	int ret = 0;
+
+	if (chip->mode == MAX8997_EXTERNAL_MODE) {
+		unsigned int duty = chip->pwm_period * chip->level / 100;
+		ret = pwm_config(chip->pwm, duty, chip->pwm_period);
+	} else {
+		u8 duty_index = 0;
+
+		duty_index = DIV_ROUND_UP(chip->level * 64, 100);
+
+		switch (chip->internal_mode_pattern) {
+		case 0:
+			max8997_write_reg(chip->client,
+				MAX8997_HAPTIC_REG_SIGPWMDC1, duty_index);
+			break;
+		case 1:
+			max8997_write_reg(chip->client,
+				MAX8997_HAPTIC_REG_SIGPWMDC2, duty_index);
+			break;
+		case 2:
+			max8997_write_reg(chip->client,
+				MAX8997_HAPTIC_REG_SIGPWMDC3, duty_index);
+			break;
+		case 3:
+			max8997_write_reg(chip->client,
+				MAX8997_HAPTIC_REG_SIGPWMDC4, duty_index);
+			break;
+		default:
+			break;
+		}
+	}
+	return ret;
+}
+
+static void max8997_haptic_configure(struct max8997_haptic *chip)
+{
+	u8 value;
+
+	value = chip->type << MAX8997_MOTOR_TYPE_SHIFT |
+		chip->enabled << MAX8997_ENABLE_SHIFT |
+		chip->mode << MAX8997_MODE_SHIFT | chip->pwm_divisor;
+	max8997_write_reg(chip->client, MAX8997_HAPTIC_REG_CONF2, value);
+
+	if (chip->mode == MAX8997_INTERNAL_MODE && chip->enabled) {
+		value = chip->internal_mode_pattern << MAX8997_CYCLE_SHIFT |
+			chip->internal_mode_pattern << MAX8997_SIG_PERIOD_SHIFT |
+			chip->internal_mode_pattern << MAX8997_SIG_DUTY_SHIFT |
+			chip->internal_mode_pattern << MAX8997_PWM_DUTY_SHIFT;
+		max8997_write_reg(chip->client,
+			MAX8997_HAPTIC_REG_DRVCONF, value);
+
+		switch (chip->internal_mode_pattern) {
+		case 0:
+			value = chip->pattern_cycle << 4;
+			max8997_write_reg(chip->client,
+				MAX8997_HAPTIC_REG_CYCLECONF1, value);
+			value = chip->pattern_signal_period;
+			max8997_write_reg(chip->client,
+				MAX8997_HAPTIC_REG_SIGCONF1, value);
+			break;
+
+		case 1:
+			value = chip->pattern_cycle;
+			max8997_write_reg(chip->client,
+				MAX8997_HAPTIC_REG_CYCLECONF1, value);
+			value = chip->pattern_signal_period;
+			max8997_write_reg(chip->client,
+				MAX8997_HAPTIC_REG_SIGCONF2, value);
+			break;
+
+		case 2:
+			value = chip->pattern_cycle << 4;
+			max8997_write_reg(chip->client,
+				MAX8997_HAPTIC_REG_CYCLECONF2, value);
+			value = chip->pattern_signal_period;
+			max8997_write_reg(chip->client,
+				MAX8997_HAPTIC_REG_SIGCONF3, value);
+			break;
+
+		case 3:
+			value = chip->pattern_cycle;
+			max8997_write_reg(chip->client,
+				MAX8997_HAPTIC_REG_CYCLECONF2, value);
+			value = chip->pattern_signal_period;
+			max8997_write_reg(chip->client,
+				MAX8997_HAPTIC_REG_SIGCONF4, value);
+			break;
+
+		default:
+			break;
+		}
+	}
+}
+
+static void max8997_haptic_enable(struct max8997_haptic *chip)
+{
+	int error;
+
+	mutex_lock(&chip->mutex);
+
+	error = max8997_haptic_set_duty_cycle(chip);
+	if (error) {
+		dev_err(chip->dev, "set_pwm_cycle failed, error: %d\n", error);
+		goto out;
+	}
+
+	if (!chip->enabled) {
+		error = regulator_enable(chip->regulator);
+		if (error) {
+			dev_err(chip->dev, "Failed to enable regulator\n");
+			goto out;
+		}
+		max8997_haptic_configure(chip);
+		if (chip->mode == MAX8997_EXTERNAL_MODE) {
+			error = pwm_enable(chip->pwm);
+			if (error) {
+				dev_err(chip->dev, "Failed to enable PWM\n");
+				regulator_disable(chip->regulator);
+				goto out;
+			}
+		}
+		chip->enabled = true;
+	}
+
+out:
+	mutex_unlock(&chip->mutex);
+}
+
+static void max8997_haptic_disable(struct max8997_haptic *chip)
+{
+	mutex_lock(&chip->mutex);
+
+	if (chip->enabled) {
+		chip->enabled = false;
+		max8997_haptic_configure(chip);
+		if (chip->mode == MAX8997_EXTERNAL_MODE)
+			pwm_disable(chip->pwm);
+		regulator_disable(chip->regulator);
+	}
+
+	mutex_unlock(&chip->mutex);
+}
+
+static void max8997_haptic_play_effect_work(struct work_struct *work)
+{
+	struct max8997_haptic *chip =
+			container_of(work, struct max8997_haptic, work);
+
+	if (chip->level)
+		max8997_haptic_enable(chip);
+	else
+		max8997_haptic_disable(chip);
+}
+
+static int max8997_haptic_play_effect(struct input_dev *dev, void *data,
+				  struct ff_effect *effect)
+{
+	struct max8997_haptic *chip = input_get_drvdata(dev);
+
+	chip->level = effect->u.rumble.strong_magnitude;
+	if (!chip->level)
+		chip->level = effect->u.rumble.weak_magnitude;
+
+	schedule_work(&chip->work);
+
+	return 0;
+}
+
+static void max8997_haptic_close(struct input_dev *dev)
+{
+	struct max8997_haptic *chip = input_get_drvdata(dev);
+
+	cancel_work_sync(&chip->work);
+	max8997_haptic_disable(chip);
+}
+
+static int max8997_haptic_probe(struct platform_device *pdev)
+{
+	struct max8997_dev *iodev = dev_get_drvdata(pdev->dev.parent);
+	const struct max8997_platform_data *pdata =
+					dev_get_platdata(iodev->dev);
+	const struct max8997_haptic_platform_data *haptic_pdata = NULL;
+	struct max8997_haptic *chip;
+	struct input_dev *input_dev;
+	int error;
+
+	if (pdata)
+		haptic_pdata = pdata->haptic_pdata;
+
+	if (!haptic_pdata) {
+		dev_err(&pdev->dev, "no haptic platform data\n");
+		return -EINVAL;
+	}
+
+	chip = kzalloc(sizeof(struct max8997_haptic), GFP_KERNEL);
+	input_dev = input_allocate_device();
+	if (!chip || !input_dev) {
+		dev_err(&pdev->dev, "unable to allocate memory\n");
+		error = -ENOMEM;
+		goto err_free_mem;
+	}
+
+	INIT_WORK(&chip->work, max8997_haptic_play_effect_work);
+	mutex_init(&chip->mutex);
+
+	chip->client = iodev->haptic;
+	chip->dev = &pdev->dev;
+	chip->input_dev = input_dev;
+	chip->pwm_period = haptic_pdata->pwm_period;
+	chip->type = haptic_pdata->type;
+	chip->mode = haptic_pdata->mode;
+	chip->pwm_divisor = haptic_pdata->pwm_divisor;
+
+	switch (chip->mode) {
+	case MAX8997_INTERNAL_MODE:
+		chip->internal_mode_pattern =
+				haptic_pdata->internal_mode_pattern;
+		chip->pattern_cycle = haptic_pdata->pattern_cycle;
+		chip->pattern_signal_period =
+				haptic_pdata->pattern_signal_period;
+		break;
+
+	case MAX8997_EXTERNAL_MODE:
+		chip->pwm = pwm_request(haptic_pdata->pwm_channel_id,
+					"max8997-haptic");
+		if (IS_ERR(chip->pwm)) {
+			error = PTR_ERR(chip->pwm);
+			dev_err(&pdev->dev,
+				"unable to request PWM for haptic, error: %d\n",
+				error);
+			goto err_free_mem;
+		}
+
+		/*
+		 * FIXME: pwm_apply_args() should be removed when switching to
+		 * the atomic PWM API.
+		 */
+		pwm_apply_args(chip->pwm);
+		break;
+
+	default:
+		dev_err(&pdev->dev,
+			"Invalid chip mode specified (%d)\n", chip->mode);
+		error = -EINVAL;
+		goto err_free_mem;
+	}
+
+	chip->regulator = regulator_get(&pdev->dev, "inmotor");
+	if (IS_ERR(chip->regulator)) {
+		error = PTR_ERR(chip->regulator);
+		dev_err(&pdev->dev,
+			"unable to get regulator, error: %d\n",
+			error);
+		goto err_free_pwm;
+	}
+
+	input_dev->name = "max8997-haptic";
+	input_dev->id.version = 1;
+	input_dev->dev.parent = &pdev->dev;
+	input_dev->close = max8997_haptic_close;
+	input_set_drvdata(input_dev, chip);
+	input_set_capability(input_dev, EV_FF, FF_RUMBLE);
+
+	error = input_ff_create_memless(input_dev, NULL,
+				max8997_haptic_play_effect);
+	if (error) {
+		dev_err(&pdev->dev,
+			"unable to create FF device, error: %d\n",
+			error);
+		goto err_put_regulator;
+	}
+
+	error = input_register_device(input_dev);
+	if (error) {
+		dev_err(&pdev->dev,
+			"unable to register input device, error: %d\n",
+			error);
+		goto err_destroy_ff;
+	}
+
+	platform_set_drvdata(pdev, chip);
+	return 0;
+
+err_destroy_ff:
+	input_ff_destroy(input_dev);
+err_put_regulator:
+	regulator_put(chip->regulator);
+err_free_pwm:
+	if (chip->mode == MAX8997_EXTERNAL_MODE)
+		pwm_free(chip->pwm);
+err_free_mem:
+	input_free_device(input_dev);
+	kfree(chip);
+
+	return error;
+}
+
+static int max8997_haptic_remove(struct platform_device *pdev)
+{
+	struct max8997_haptic *chip = platform_get_drvdata(pdev);
+
+	input_unregister_device(chip->input_dev);
+	regulator_put(chip->regulator);
+
+	if (chip->mode == MAX8997_EXTERNAL_MODE)
+		pwm_free(chip->pwm);
+
+	kfree(chip);
+
+	return 0;
+}
+
+static int __maybe_unused max8997_haptic_suspend(struct device *dev)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct max8997_haptic *chip = platform_get_drvdata(pdev);
+
+	max8997_haptic_disable(chip);
+
+	return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(max8997_haptic_pm_ops, max8997_haptic_suspend, NULL);
+
+static const struct platform_device_id max8997_haptic_id[] = {
+	{ "max8997-haptic", 0 },
+	{ },
+};
+MODULE_DEVICE_TABLE(platform, max8997_haptic_id);
+
+static struct platform_driver max8997_haptic_driver = {
+	.driver	= {
+		.name	= "max8997-haptic",
+		.pm	= &max8997_haptic_pm_ops,
+	},
+	.probe		= max8997_haptic_probe,
+	.remove		= max8997_haptic_remove,
+	.id_table	= max8997_haptic_id,
+};
+module_platform_driver(max8997_haptic_driver);
+
+MODULE_AUTHOR("Donggeun Kim <dg77.kim@samsung.com>");
+MODULE_DESCRIPTION("max8997_haptic driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/misc/mc13783-pwrbutton.c b/drivers/input/misc/mc13783-pwrbutton.c
new file mode 100644
index 000000000..0636eee4b
--- /dev/null
+++ b/drivers/input/misc/mc13783-pwrbutton.c
@@ -0,0 +1,269 @@
+/*
+ * Copyright (C) 2011 Philippe Rétornaz
+ *
+ * Based on twl4030-pwrbutton driver by:
+ *     Peter De Schrijver <peter.de-schrijver@nokia.com>
+ *     Felipe Balbi <felipe.balbi@nokia.com>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License. See the file "COPYING" in the main directory of this
+ * archive for more details.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335  USA
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/mfd/mc13783.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+
+struct mc13783_pwrb {
+	struct input_dev *pwr;
+	struct mc13xxx *mc13783;
+#define MC13783_PWRB_B1_POL_INVERT	(1 << 0)
+#define MC13783_PWRB_B2_POL_INVERT	(1 << 1)
+#define MC13783_PWRB_B3_POL_INVERT	(1 << 2)
+	int flags;
+	unsigned short keymap[3];
+};
+
+#define MC13783_REG_INTERRUPT_SENSE_1		5
+#define MC13783_IRQSENSE1_ONOFD1S		(1 << 3)
+#define MC13783_IRQSENSE1_ONOFD2S		(1 << 4)
+#define MC13783_IRQSENSE1_ONOFD3S		(1 << 5)
+
+#define MC13783_REG_POWER_CONTROL_2		15
+#define MC13783_POWER_CONTROL_2_ON1BDBNC	4
+#define MC13783_POWER_CONTROL_2_ON2BDBNC	6
+#define MC13783_POWER_CONTROL_2_ON3BDBNC	8
+#define MC13783_POWER_CONTROL_2_ON1BRSTEN	(1 << 1)
+#define MC13783_POWER_CONTROL_2_ON2BRSTEN	(1 << 2)
+#define MC13783_POWER_CONTROL_2_ON3BRSTEN	(1 << 3)
+
+static irqreturn_t button_irq(int irq, void *_priv)
+{
+	struct mc13783_pwrb *priv = _priv;
+	int val;
+
+	mc13xxx_irq_ack(priv->mc13783, irq);
+	mc13xxx_reg_read(priv->mc13783, MC13783_REG_INTERRUPT_SENSE_1, &val);
+
+	switch (irq) {
+	case MC13783_IRQ_ONOFD1:
+		val = val & MC13783_IRQSENSE1_ONOFD1S ? 1 : 0;
+		if (priv->flags & MC13783_PWRB_B1_POL_INVERT)
+			val ^= 1;
+		input_report_key(priv->pwr, priv->keymap[0], val);
+		break;
+
+	case MC13783_IRQ_ONOFD2:
+		val = val & MC13783_IRQSENSE1_ONOFD2S ? 1 : 0;
+		if (priv->flags & MC13783_PWRB_B2_POL_INVERT)
+			val ^= 1;
+		input_report_key(priv->pwr, priv->keymap[1], val);
+		break;
+
+	case MC13783_IRQ_ONOFD3:
+		val = val & MC13783_IRQSENSE1_ONOFD3S ? 1 : 0;
+		if (priv->flags & MC13783_PWRB_B3_POL_INVERT)
+			val ^= 1;
+		input_report_key(priv->pwr, priv->keymap[2], val);
+		break;
+	}
+
+	input_sync(priv->pwr);
+
+	return IRQ_HANDLED;
+}
+
+static int mc13783_pwrbutton_probe(struct platform_device *pdev)
+{
+	const struct mc13xxx_buttons_platform_data *pdata;
+	struct mc13xxx *mc13783 = dev_get_drvdata(pdev->dev.parent);
+	struct input_dev *pwr;
+	struct mc13783_pwrb *priv;
+	int err = 0;
+	int reg = 0;
+
+	pdata = dev_get_platdata(&pdev->dev);
+	if (!pdata) {
+		dev_err(&pdev->dev, "missing platform data\n");
+		return -ENODEV;
+	}
+
+	pwr = input_allocate_device();
+	if (!pwr) {
+		dev_dbg(&pdev->dev, "Can't allocate power button\n");
+		return -ENOMEM;
+	}
+
+	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
+	if (!priv) {
+		err = -ENOMEM;
+		dev_dbg(&pdev->dev, "Can't allocate power button\n");
+		goto free_input_dev;
+	}
+
+	reg |= (pdata->b1on_flags & 0x3) << MC13783_POWER_CONTROL_2_ON1BDBNC;
+	reg |= (pdata->b2on_flags & 0x3) << MC13783_POWER_CONTROL_2_ON2BDBNC;
+	reg |= (pdata->b3on_flags & 0x3) << MC13783_POWER_CONTROL_2_ON3BDBNC;
+
+	priv->pwr = pwr;
+	priv->mc13783 = mc13783;
+
+	mc13xxx_lock(mc13783);
+
+	if (pdata->b1on_flags & MC13783_BUTTON_ENABLE) {
+		priv->keymap[0] = pdata->b1on_key;
+		if (pdata->b1on_key != KEY_RESERVED)
+			__set_bit(pdata->b1on_key, pwr->keybit);
+
+		if (pdata->b1on_flags & MC13783_BUTTON_POL_INVERT)
+			priv->flags |= MC13783_PWRB_B1_POL_INVERT;
+
+		if (pdata->b1on_flags & MC13783_BUTTON_RESET_EN)
+			reg |= MC13783_POWER_CONTROL_2_ON1BRSTEN;
+
+		err = mc13xxx_irq_request(mc13783, MC13783_IRQ_ONOFD1,
+					  button_irq, "b1on", priv);
+		if (err) {
+			dev_dbg(&pdev->dev, "Can't request irq\n");
+			goto free_priv;
+		}
+	}
+
+	if (pdata->b2on_flags & MC13783_BUTTON_ENABLE) {
+		priv->keymap[1] = pdata->b2on_key;
+		if (pdata->b2on_key != KEY_RESERVED)
+			__set_bit(pdata->b2on_key, pwr->keybit);
+
+		if (pdata->b2on_flags & MC13783_BUTTON_POL_INVERT)
+			priv->flags |= MC13783_PWRB_B2_POL_INVERT;
+
+		if (pdata->b2on_flags & MC13783_BUTTON_RESET_EN)
+			reg |= MC13783_POWER_CONTROL_2_ON2BRSTEN;
+
+		err = mc13xxx_irq_request(mc13783, MC13783_IRQ_ONOFD2,
+					  button_irq, "b2on", priv);
+		if (err) {
+			dev_dbg(&pdev->dev, "Can't request irq\n");
+			goto free_irq_b1;
+		}
+	}
+
+	if (pdata->b3on_flags & MC13783_BUTTON_ENABLE) {
+		priv->keymap[2] = pdata->b3on_key;
+		if (pdata->b3on_key != KEY_RESERVED)
+			__set_bit(pdata->b3on_key, pwr->keybit);
+
+		if (pdata->b3on_flags & MC13783_BUTTON_POL_INVERT)
+			priv->flags |= MC13783_PWRB_B3_POL_INVERT;
+
+		if (pdata->b3on_flags & MC13783_BUTTON_RESET_EN)
+			reg |= MC13783_POWER_CONTROL_2_ON3BRSTEN;
+
+		err = mc13xxx_irq_request(mc13783, MC13783_IRQ_ONOFD3,
+					  button_irq, "b3on", priv);
+		if (err) {
+			dev_dbg(&pdev->dev, "Can't request irq: %d\n", err);
+			goto free_irq_b2;
+		}
+	}
+
+	mc13xxx_reg_rmw(mc13783, MC13783_REG_POWER_CONTROL_2, 0x3FE, reg);
+
+	mc13xxx_unlock(mc13783);
+
+	pwr->name = "mc13783_pwrbutton";
+	pwr->phys = "mc13783_pwrbutton/input0";
+	pwr->dev.parent = &pdev->dev;
+
+	pwr->keycode = priv->keymap;
+	pwr->keycodemax = ARRAY_SIZE(priv->keymap);
+	pwr->keycodesize = sizeof(priv->keymap[0]);
+	__set_bit(EV_KEY, pwr->evbit);
+
+	err = input_register_device(pwr);
+	if (err) {
+		dev_dbg(&pdev->dev, "Can't register power button: %d\n", err);
+		goto free_irq;
+	}
+
+	platform_set_drvdata(pdev, priv);
+
+	return 0;
+
+free_irq:
+	mc13xxx_lock(mc13783);
+
+	if (pdata->b3on_flags & MC13783_BUTTON_ENABLE)
+		mc13xxx_irq_free(mc13783, MC13783_IRQ_ONOFD3, priv);
+
+free_irq_b2:
+	if (pdata->b2on_flags & MC13783_BUTTON_ENABLE)
+		mc13xxx_irq_free(mc13783, MC13783_IRQ_ONOFD2, priv);
+
+free_irq_b1:
+	if (pdata->b1on_flags & MC13783_BUTTON_ENABLE)
+		mc13xxx_irq_free(mc13783, MC13783_IRQ_ONOFD1, priv);
+
+free_priv:
+	mc13xxx_unlock(mc13783);
+	kfree(priv);
+
+free_input_dev:
+	input_free_device(pwr);
+
+	return err;
+}
+
+static int mc13783_pwrbutton_remove(struct platform_device *pdev)
+{
+	struct mc13783_pwrb *priv = platform_get_drvdata(pdev);
+	const struct mc13xxx_buttons_platform_data *pdata;
+
+	pdata = dev_get_platdata(&pdev->dev);
+
+	mc13xxx_lock(priv->mc13783);
+
+	if (pdata->b3on_flags & MC13783_BUTTON_ENABLE)
+		mc13xxx_irq_free(priv->mc13783, MC13783_IRQ_ONOFD3, priv);
+	if (pdata->b2on_flags & MC13783_BUTTON_ENABLE)
+		mc13xxx_irq_free(priv->mc13783, MC13783_IRQ_ONOFD2, priv);
+	if (pdata->b1on_flags & MC13783_BUTTON_ENABLE)
+		mc13xxx_irq_free(priv->mc13783, MC13783_IRQ_ONOFD1, priv);
+
+	mc13xxx_unlock(priv->mc13783);
+
+	input_unregister_device(priv->pwr);
+	kfree(priv);
+
+	return 0;
+}
+
+static struct platform_driver mc13783_pwrbutton_driver = {
+	.probe		= mc13783_pwrbutton_probe,
+	.remove		= mc13783_pwrbutton_remove,
+	.driver		= {
+		.name	= "mc13783-pwrbutton",
+	},
+};
+
+module_platform_driver(mc13783_pwrbutton_driver);
+
+MODULE_ALIAS("platform:mc13783-pwrbutton");
+MODULE_DESCRIPTION("MC13783 Power Button");
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Philippe Retornaz");
diff --git a/drivers/input/misc/mma8450.c b/drivers/input/misc/mma8450.c
new file mode 100644
index 000000000..1b5a5e192
--- /dev/null
+++ b/drivers/input/misc/mma8450.c
@@ -0,0 +1,214 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *  Driver for Freescale's 3-Axis Accelerometer MMA8450
+ *
+ *  Copyright (C) 2011 Freescale Semiconductor, Inc. All Rights Reserved.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/i2c.h>
+#include <linux/input.h>
+#include <linux/of_device.h>
+
+#define MMA8450_DRV_NAME	"mma8450"
+
+#define MODE_CHANGE_DELAY_MS	100
+#define POLL_INTERVAL		100
+#define POLL_INTERVAL_MAX	500
+
+/* register definitions */
+#define MMA8450_STATUS		0x00
+#define MMA8450_STATUS_ZXYDR	0x08
+
+#define MMA8450_OUT_X8		0x01
+#define MMA8450_OUT_Y8		0x02
+#define MMA8450_OUT_Z8		0x03
+
+#define MMA8450_OUT_X_LSB	0x05
+#define MMA8450_OUT_X_MSB	0x06
+#define MMA8450_OUT_Y_LSB	0x07
+#define MMA8450_OUT_Y_MSB	0x08
+#define MMA8450_OUT_Z_LSB	0x09
+#define MMA8450_OUT_Z_MSB	0x0a
+
+#define MMA8450_XYZ_DATA_CFG	0x16
+
+#define MMA8450_CTRL_REG1	0x38
+#define MMA8450_CTRL_REG2	0x39
+
+static int mma8450_read(struct i2c_client *c, unsigned int off)
+{
+	int ret;
+
+	ret = i2c_smbus_read_byte_data(c, off);
+	if (ret < 0)
+		dev_err(&c->dev,
+			"failed to read register 0x%02x, error %d\n",
+			off, ret);
+
+	return ret;
+}
+
+static int mma8450_write(struct i2c_client *c, unsigned int off, u8 v)
+{
+	int error;
+
+	error = i2c_smbus_write_byte_data(c, off, v);
+	if (error < 0) {
+		dev_err(&c->dev,
+			"failed to write to register 0x%02x, error %d\n",
+			off, error);
+		return error;
+	}
+
+	return 0;
+}
+
+static int mma8450_read_block(struct i2c_client *c, unsigned int off,
+			      u8 *buf, size_t size)
+{
+	int err;
+
+	err = i2c_smbus_read_i2c_block_data(c, off, size, buf);
+	if (err < 0) {
+		dev_err(&c->dev,
+			"failed to read block data at 0x%02x, error %d\n",
+			MMA8450_OUT_X_LSB, err);
+		return err;
+	}
+
+	return 0;
+}
+
+static void mma8450_poll(struct input_dev *input)
+{
+	struct i2c_client *c = input_get_drvdata(input);
+	int x, y, z;
+	int ret;
+	u8 buf[6];
+
+	ret = mma8450_read(c, MMA8450_STATUS);
+	if (ret < 0)
+		return;
+
+	if (!(ret & MMA8450_STATUS_ZXYDR))
+		return;
+
+	ret = mma8450_read_block(c, MMA8450_OUT_X_LSB, buf, sizeof(buf));
+	if (ret < 0)
+		return;
+
+	x = ((int)(s8)buf[1] << 4) | (buf[0] & 0xf);
+	y = ((int)(s8)buf[3] << 4) | (buf[2] & 0xf);
+	z = ((int)(s8)buf[5] << 4) | (buf[4] & 0xf);
+
+	input_report_abs(input, ABS_X, x);
+	input_report_abs(input, ABS_Y, y);
+	input_report_abs(input, ABS_Z, z);
+	input_sync(input);
+}
+
+/* Initialize the MMA8450 chip */
+static int mma8450_open(struct input_dev *input)
+{
+	struct i2c_client *c = input_get_drvdata(input);
+	int err;
+
+	/* enable all events from X/Y/Z, no FIFO */
+	err = mma8450_write(c, MMA8450_XYZ_DATA_CFG, 0x07);
+	if (err)
+		return err;
+
+	/*
+	 * Sleep mode poll rate - 50Hz
+	 * System output data rate - 400Hz
+	 * Full scale selection - Active, +/- 2G
+	 */
+	err = mma8450_write(c, MMA8450_CTRL_REG1, 0x01);
+	if (err)
+		return err;
+
+	msleep(MODE_CHANGE_DELAY_MS);
+	return 0;
+}
+
+static void mma8450_close(struct input_dev *input)
+{
+	struct i2c_client *c = input_get_drvdata(input);
+
+	mma8450_write(c, MMA8450_CTRL_REG1, 0x00);
+	mma8450_write(c, MMA8450_CTRL_REG2, 0x01);
+}
+
+/*
+ * I2C init/probing/exit functions
+ */
+static int mma8450_probe(struct i2c_client *c,
+			 const struct i2c_device_id *id)
+{
+	struct input_dev *input;
+	int err;
+
+	input = devm_input_allocate_device(&c->dev);
+	if (!input)
+		return -ENOMEM;
+
+	input_set_drvdata(input, c);
+
+	input->name = MMA8450_DRV_NAME;
+	input->id.bustype = BUS_I2C;
+
+	input->open = mma8450_open;
+	input->close = mma8450_close;
+
+	input_set_abs_params(input, ABS_X, -2048, 2047, 32, 32);
+	input_set_abs_params(input, ABS_Y, -2048, 2047, 32, 32);
+	input_set_abs_params(input, ABS_Z, -2048, 2047, 32, 32);
+
+	err = input_setup_polling(input, mma8450_poll);
+	if (err) {
+		dev_err(&c->dev, "failed to set up polling\n");
+		return err;
+	}
+
+	input_set_poll_interval(input, POLL_INTERVAL);
+	input_set_max_poll_interval(input, POLL_INTERVAL_MAX);
+
+	err = input_register_device(input);
+	if (err) {
+		dev_err(&c->dev, "failed to register input device\n");
+		return err;
+	}
+
+	return 0;
+}
+
+static const struct i2c_device_id mma8450_id[] = {
+	{ MMA8450_DRV_NAME, 0 },
+	{ },
+};
+MODULE_DEVICE_TABLE(i2c, mma8450_id);
+
+static const struct of_device_id mma8450_dt_ids[] = {
+	{ .compatible = "fsl,mma8450", },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, mma8450_dt_ids);
+
+static struct i2c_driver mma8450_driver = {
+	.driver = {
+		.name	= MMA8450_DRV_NAME,
+		.of_match_table = mma8450_dt_ids,
+	},
+	.probe		= mma8450_probe,
+	.id_table	= mma8450_id,
+};
+
+module_i2c_driver(mma8450_driver);
+
+MODULE_AUTHOR("Freescale Semiconductor, Inc.");
+MODULE_DESCRIPTION("MMA8450 3-Axis Accelerometer Driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/misc/palmas-pwrbutton.c b/drivers/input/misc/palmas-pwrbutton.c
new file mode 100644
index 000000000..465e66930
--- /dev/null
+++ b/drivers/input/misc/palmas-pwrbutton.c
@@ -0,0 +1,327 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Texas Instruments' Palmas Power Button Input Driver
+ *
+ * Copyright (C) 2012-2014 Texas Instruments Incorporated - http://www.ti.com/
+ *	Girish S Ghongdemath
+ *	Nishanth Menon
+ */
+
+#include <linux/bitfield.h>
+#include <linux/init.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/mfd/palmas.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+
+#define PALMAS_LPK_TIME_MASK		0x0c
+#define PALMAS_PWRON_DEBOUNCE_MASK	0x03
+#define PALMAS_PWR_KEY_Q_TIME_MS	20
+
+/**
+ * struct palmas_pwron - Palmas power on data
+ * @palmas:		pointer to palmas device
+ * @input_dev:		pointer to input device
+ * @input_work:		work for detecting release of key
+ * @irq:		irq that we are hooked on to
+ */
+struct palmas_pwron {
+	struct palmas *palmas;
+	struct input_dev *input_dev;
+	struct delayed_work input_work;
+	int irq;
+};
+
+/**
+ * struct palmas_pwron_config - configuration of palmas power on
+ * @long_press_time_val:	value for long press h/w shutdown event
+ * @pwron_debounce_val:		value for debounce of power button
+ */
+struct palmas_pwron_config {
+	u8 long_press_time_val;
+	u8 pwron_debounce_val;
+};
+
+/**
+ * palmas_power_button_work() - Detects the button release event
+ * @work:	work item to detect button release
+ */
+static void palmas_power_button_work(struct work_struct *work)
+{
+	struct palmas_pwron *pwron = container_of(work,
+						  struct palmas_pwron,
+						  input_work.work);
+	struct input_dev *input_dev = pwron->input_dev;
+	unsigned int reg;
+	int error;
+
+	error = palmas_read(pwron->palmas, PALMAS_INTERRUPT_BASE,
+			    PALMAS_INT1_LINE_STATE, &reg);
+	if (error) {
+		dev_err(input_dev->dev.parent,
+			"Cannot read palmas PWRON status: %d\n", error);
+	} else if (reg & BIT(1)) {
+		/* The button is released, report event. */
+		input_report_key(input_dev, KEY_POWER, 0);
+		input_sync(input_dev);
+	} else {
+		/* The button is still depressed, keep checking. */
+		schedule_delayed_work(&pwron->input_work,
+				msecs_to_jiffies(PALMAS_PWR_KEY_Q_TIME_MS));
+	}
+}
+
+/**
+ * pwron_irq() - button press isr
+ * @irq:		irq
+ * @palmas_pwron:	pwron struct
+ *
+ * Return: IRQ_HANDLED
+ */
+static irqreturn_t pwron_irq(int irq, void *palmas_pwron)
+{
+	struct palmas_pwron *pwron = palmas_pwron;
+	struct input_dev *input_dev = pwron->input_dev;
+
+	input_report_key(input_dev, KEY_POWER, 1);
+	pm_wakeup_event(input_dev->dev.parent, 0);
+	input_sync(input_dev);
+
+	mod_delayed_work(system_wq, &pwron->input_work,
+			 msecs_to_jiffies(PALMAS_PWR_KEY_Q_TIME_MS));
+
+	return IRQ_HANDLED;
+}
+
+/**
+ * palmas_pwron_params_ofinit() - device tree parameter parser
+ * @dev:	palmas button device
+ * @config:	configuration params that this fills up
+ */
+static void palmas_pwron_params_ofinit(struct device *dev,
+				       struct palmas_pwron_config *config)
+{
+	struct device_node *np;
+	u32 val;
+	int i, error;
+	static const u8 lpk_times[] = { 6, 8, 10, 12 };
+	static const int pwr_on_deb_ms[] = { 15, 100, 500, 1000 };
+
+	memset(config, 0, sizeof(*config));
+
+	/* Default config parameters */
+	config->long_press_time_val = ARRAY_SIZE(lpk_times) - 1;
+
+	np = dev->of_node;
+	if (!np)
+		return;
+
+	error = of_property_read_u32(np, "ti,palmas-long-press-seconds", &val);
+	if (!error) {
+		for (i = 0; i < ARRAY_SIZE(lpk_times); i++) {
+			if (val <= lpk_times[i]) {
+				config->long_press_time_val = i;
+				break;
+			}
+		}
+	}
+
+	error = of_property_read_u32(np,
+				     "ti,palmas-pwron-debounce-milli-seconds",
+				     &val);
+	if (!error) {
+		for (i = 0; i < ARRAY_SIZE(pwr_on_deb_ms); i++) {
+			if (val <= pwr_on_deb_ms[i]) {
+				config->pwron_debounce_val = i;
+				break;
+			}
+		}
+	}
+
+	dev_info(dev, "h/w controlled shutdown duration=%d seconds\n",
+		 lpk_times[config->long_press_time_val]);
+}
+
+/**
+ * palmas_pwron_probe() - probe
+ * @pdev:	platform device for the button
+ *
+ * Return: 0 for successful probe else appropriate error
+ */
+static int palmas_pwron_probe(struct platform_device *pdev)
+{
+	struct palmas *palmas = dev_get_drvdata(pdev->dev.parent);
+	struct device *dev = &pdev->dev;
+	struct input_dev *input_dev;
+	struct palmas_pwron *pwron;
+	struct palmas_pwron_config config;
+	int val;
+	int error;
+
+	palmas_pwron_params_ofinit(dev, &config);
+
+	pwron = kzalloc(sizeof(*pwron), GFP_KERNEL);
+	if (!pwron)
+		return -ENOMEM;
+
+	input_dev = input_allocate_device();
+	if (!input_dev) {
+		dev_err(dev, "Can't allocate power button\n");
+		error = -ENOMEM;
+		goto err_free_mem;
+	}
+
+	input_dev->name = "palmas_pwron";
+	input_dev->phys = "palmas_pwron/input0";
+	input_dev->dev.parent = dev;
+
+	input_set_capability(input_dev, EV_KEY, KEY_POWER);
+
+	/*
+	 * Setup default hardware shutdown option (long key press)
+	 * and debounce.
+	 */
+	val = FIELD_PREP(PALMAS_LPK_TIME_MASK, config.long_press_time_val) |
+	      FIELD_PREP(PALMAS_PWRON_DEBOUNCE_MASK, config.pwron_debounce_val);
+	error = palmas_update_bits(palmas, PALMAS_PMU_CONTROL_BASE,
+				   PALMAS_LONG_PRESS_KEY,
+				   PALMAS_LPK_TIME_MASK |
+					PALMAS_PWRON_DEBOUNCE_MASK,
+				   val);
+	if (error) {
+		dev_err(dev, "LONG_PRESS_KEY_UPDATE failed: %d\n", error);
+		goto err_free_input;
+	}
+
+	pwron->palmas = palmas;
+	pwron->input_dev = input_dev;
+
+	INIT_DELAYED_WORK(&pwron->input_work, palmas_power_button_work);
+
+	pwron->irq = platform_get_irq(pdev, 0);
+	if (pwron->irq < 0) {
+		error = pwron->irq;
+		goto err_free_input;
+	}
+
+	error = request_threaded_irq(pwron->irq, NULL, pwron_irq,
+				     IRQF_TRIGGER_HIGH |
+					IRQF_TRIGGER_LOW |
+					IRQF_ONESHOT,
+				     dev_name(dev), pwron);
+	if (error) {
+		dev_err(dev, "Can't get IRQ for pwron: %d\n", error);
+		goto err_free_input;
+	}
+
+	error = input_register_device(input_dev);
+	if (error) {
+		dev_err(dev, "Can't register power button: %d\n", error);
+		goto err_free_irq;
+	}
+
+	platform_set_drvdata(pdev, pwron);
+	device_init_wakeup(dev, true);
+
+	return 0;
+
+err_free_irq:
+	cancel_delayed_work_sync(&pwron->input_work);
+	free_irq(pwron->irq, pwron);
+err_free_input:
+	input_free_device(input_dev);
+err_free_mem:
+	kfree(pwron);
+	return error;
+}
+
+/**
+ * palmas_pwron_remove() - Cleanup on removal
+ * @pdev:	platform device for the button
+ *
+ * Return: 0
+ */
+static int palmas_pwron_remove(struct platform_device *pdev)
+{
+	struct palmas_pwron *pwron = platform_get_drvdata(pdev);
+
+	free_irq(pwron->irq, pwron);
+	cancel_delayed_work_sync(&pwron->input_work);
+
+	input_unregister_device(pwron->input_dev);
+	kfree(pwron);
+
+	return 0;
+}
+
+/**
+ * palmas_pwron_suspend() - suspend handler
+ * @dev:	power button device
+ *
+ * Cancel all pending work items for the power button, setup irq for wakeup
+ *
+ * Return: 0
+ */
+static int __maybe_unused palmas_pwron_suspend(struct device *dev)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct palmas_pwron *pwron = platform_get_drvdata(pdev);
+
+	cancel_delayed_work_sync(&pwron->input_work);
+
+	if (device_may_wakeup(dev))
+		enable_irq_wake(pwron->irq);
+
+	return 0;
+}
+
+/**
+ * palmas_pwron_resume() - resume handler
+ * @dev:	power button device
+ *
+ * Just disable the wakeup capability of irq here.
+ *
+ * Return: 0
+ */
+static int __maybe_unused palmas_pwron_resume(struct device *dev)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct palmas_pwron *pwron = platform_get_drvdata(pdev);
+
+	if (device_may_wakeup(dev))
+		disable_irq_wake(pwron->irq);
+
+	return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(palmas_pwron_pm,
+			 palmas_pwron_suspend, palmas_pwron_resume);
+
+#ifdef CONFIG_OF
+static const struct of_device_id of_palmas_pwr_match[] = {
+	{ .compatible = "ti,palmas-pwrbutton" },
+	{ },
+};
+
+MODULE_DEVICE_TABLE(of, of_palmas_pwr_match);
+#endif
+
+static struct platform_driver palmas_pwron_driver = {
+	.probe	= palmas_pwron_probe,
+	.remove	= palmas_pwron_remove,
+	.driver	= {
+		.name	= "palmas_pwrbutton",
+		.of_match_table = of_match_ptr(of_palmas_pwr_match),
+		.pm	= &palmas_pwron_pm,
+	},
+};
+module_platform_driver(palmas_pwron_driver);
+
+MODULE_ALIAS("platform:palmas-pwrbutton");
+MODULE_DESCRIPTION("Palmas Power Button");
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Texas Instruments Inc.");
diff --git a/drivers/input/misc/pcap_keys.c b/drivers/input/misc/pcap_keys.c
new file mode 100644
index 000000000..b5a53636d
--- /dev/null
+++ b/drivers/input/misc/pcap_keys.c
@@ -0,0 +1,127 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ *  Input driver for PCAP events:
+ *   * Power key
+ *   * Headphone button
+ *
+ *  Copyright (c) 2008,2009 Ilya Petrov <ilya.muromec@gmail.com>
+ */
+
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/input.h>
+#include <linux/mfd/ezx-pcap.h>
+#include <linux/slab.h>
+
+struct pcap_keys {
+	struct pcap_chip *pcap;
+	struct input_dev *input;
+};
+
+/* PCAP2 interrupts us on keypress */
+static irqreturn_t pcap_keys_handler(int irq, void *_pcap_keys)
+{
+	struct pcap_keys *pcap_keys = _pcap_keys;
+	int pirq = irq_to_pcap(pcap_keys->pcap, irq);
+	u32 pstat;
+
+	ezx_pcap_read(pcap_keys->pcap, PCAP_REG_PSTAT, &pstat);
+	pstat &= 1 << pirq;
+
+	switch (pirq) {
+	case PCAP_IRQ_ONOFF:
+		input_report_key(pcap_keys->input, KEY_POWER, !pstat);
+		break;
+	case PCAP_IRQ_MIC:
+		input_report_key(pcap_keys->input, KEY_HP, !pstat);
+		break;
+	}
+
+	input_sync(pcap_keys->input);
+
+	return IRQ_HANDLED;
+}
+
+static int pcap_keys_probe(struct platform_device *pdev)
+{
+	int err = -ENOMEM;
+	struct pcap_keys *pcap_keys;
+	struct input_dev *input_dev;
+
+	pcap_keys = kmalloc(sizeof(struct pcap_keys), GFP_KERNEL);
+	if (!pcap_keys)
+		return err;
+
+	pcap_keys->pcap = dev_get_drvdata(pdev->dev.parent);
+
+	input_dev = input_allocate_device();
+	if (!input_dev)
+		goto fail;
+
+	pcap_keys->input = input_dev;
+
+	platform_set_drvdata(pdev, pcap_keys);
+	input_dev->name = pdev->name;
+	input_dev->phys = "pcap-keys/input0";
+	input_dev->id.bustype = BUS_HOST;
+	input_dev->dev.parent = &pdev->dev;
+
+	__set_bit(EV_KEY, input_dev->evbit);
+	__set_bit(KEY_POWER, input_dev->keybit);
+	__set_bit(KEY_HP, input_dev->keybit);
+
+	err = input_register_device(input_dev);
+	if (err)
+		goto fail_allocate;
+
+	err = request_irq(pcap_to_irq(pcap_keys->pcap, PCAP_IRQ_ONOFF),
+			pcap_keys_handler, 0, "Power key", pcap_keys);
+	if (err)
+		goto fail_register;
+
+	err = request_irq(pcap_to_irq(pcap_keys->pcap, PCAP_IRQ_MIC),
+			pcap_keys_handler, 0, "Headphone button", pcap_keys);
+	if (err)
+		goto fail_pwrkey;
+
+	return 0;
+
+fail_pwrkey:
+	free_irq(pcap_to_irq(pcap_keys->pcap, PCAP_IRQ_ONOFF), pcap_keys);
+fail_register:
+	input_unregister_device(input_dev);
+	goto fail;
+fail_allocate:
+	input_free_device(input_dev);
+fail:
+	kfree(pcap_keys);
+	return err;
+}
+
+static int pcap_keys_remove(struct platform_device *pdev)
+{
+	struct pcap_keys *pcap_keys = platform_get_drvdata(pdev);
+
+	free_irq(pcap_to_irq(pcap_keys->pcap, PCAP_IRQ_ONOFF), pcap_keys);
+	free_irq(pcap_to_irq(pcap_keys->pcap, PCAP_IRQ_MIC), pcap_keys);
+
+	input_unregister_device(pcap_keys->input);
+	kfree(pcap_keys);
+
+	return 0;
+}
+
+static struct platform_driver pcap_keys_device_driver = {
+	.probe		= pcap_keys_probe,
+	.remove		= pcap_keys_remove,
+	.driver		= {
+		.name	= "pcap-keys",
+	}
+};
+module_platform_driver(pcap_keys_device_driver);
+
+MODULE_DESCRIPTION("Motorola PCAP2 input events driver");
+MODULE_AUTHOR("Ilya Petrov <ilya.muromec@gmail.com>");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:pcap_keys");
diff --git a/drivers/input/misc/pcf50633-input.c b/drivers/input/misc/pcf50633-input.c
new file mode 100644
index 000000000..4c60c70c4
--- /dev/null
+++ b/drivers/input/misc/pcf50633-input.c
@@ -0,0 +1,115 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/* NXP PCF50633 Input Driver
+ *
+ * (C) 2006-2008 by Openmoko, Inc.
+ * Author: Balaji Rao <balajirrao@openmoko.org>
+ * All rights reserved.
+ *
+ * Broken down from monstrous PCF50633 driver mainly by
+ * Harald Welte, Andy Green and Werner Almesberger
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/input.h>
+#include <linux/slab.h>
+
+#include <linux/mfd/pcf50633/core.h>
+
+#define PCF50633_OOCSTAT_ONKEY	0x01
+#define PCF50633_REG_OOCSTAT	0x12
+#define PCF50633_REG_OOCMODE	0x10
+
+struct pcf50633_input {
+	struct pcf50633 *pcf;
+	struct input_dev *input_dev;
+};
+
+static void
+pcf50633_input_irq(int irq, void *data)
+{
+	struct pcf50633_input *input;
+	int onkey_released;
+
+	input = data;
+
+	/* We report only one event depending on the key press status */
+	onkey_released = pcf50633_reg_read(input->pcf, PCF50633_REG_OOCSTAT)
+						& PCF50633_OOCSTAT_ONKEY;
+
+	if (irq == PCF50633_IRQ_ONKEYF && !onkey_released)
+		input_report_key(input->input_dev, KEY_POWER, 1);
+	else if (irq == PCF50633_IRQ_ONKEYR && onkey_released)
+		input_report_key(input->input_dev, KEY_POWER, 0);
+
+	input_sync(input->input_dev);
+}
+
+static int pcf50633_input_probe(struct platform_device *pdev)
+{
+	struct pcf50633_input *input;
+	struct input_dev *input_dev;
+	int ret;
+
+
+	input = kzalloc(sizeof(*input), GFP_KERNEL);
+	if (!input)
+		return -ENOMEM;
+
+	input_dev = input_allocate_device();
+	if (!input_dev) {
+		kfree(input);
+		return -ENOMEM;
+	}
+
+	platform_set_drvdata(pdev, input);
+	input->pcf = dev_to_pcf50633(pdev->dev.parent);
+	input->input_dev = input_dev;
+
+	input_dev->name = "PCF50633 PMU events";
+	input_dev->id.bustype = BUS_I2C;
+	input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_PWR);
+	set_bit(KEY_POWER, input_dev->keybit);
+
+	ret = input_register_device(input_dev);
+	if (ret) {
+		input_free_device(input_dev);
+		kfree(input);
+		return ret;
+	}
+	pcf50633_register_irq(input->pcf, PCF50633_IRQ_ONKEYR,
+				pcf50633_input_irq, input);
+	pcf50633_register_irq(input->pcf, PCF50633_IRQ_ONKEYF,
+				pcf50633_input_irq, input);
+
+	return 0;
+}
+
+static int pcf50633_input_remove(struct platform_device *pdev)
+{
+	struct pcf50633_input *input  = platform_get_drvdata(pdev);
+
+	pcf50633_free_irq(input->pcf, PCF50633_IRQ_ONKEYR);
+	pcf50633_free_irq(input->pcf, PCF50633_IRQ_ONKEYF);
+
+	input_unregister_device(input->input_dev);
+	kfree(input);
+
+	return 0;
+}
+
+static struct platform_driver pcf50633_input_driver = {
+	.driver = {
+		.name = "pcf50633-input",
+	},
+	.probe = pcf50633_input_probe,
+	.remove = pcf50633_input_remove,
+};
+module_platform_driver(pcf50633_input_driver);
+
+MODULE_AUTHOR("Balaji Rao <balajirrao@openmoko.org>");
+MODULE_DESCRIPTION("PCF50633 input driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:pcf50633-input");
diff --git a/drivers/input/misc/pcf8574_keypad.c b/drivers/input/misc/pcf8574_keypad.c
new file mode 100644
index 000000000..cfd6640e4
--- /dev/null
+++ b/drivers/input/misc/pcf8574_keypad.c
@@ -0,0 +1,221 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Driver for a keypad w/16 buttons connected to a PCF8574 I2C I/O expander
+ *
+ * Copyright 2005-2008 Analog Devices Inc.
+ */
+
+#include <linux/module.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/i2c.h>
+#include <linux/slab.h>
+#include <linux/workqueue.h>
+
+#define DRV_NAME "pcf8574_keypad"
+
+static const unsigned char pcf8574_kp_btncode[] = {
+	[0] = KEY_RESERVED,
+	[1] = KEY_ENTER,
+	[2] = KEY_BACKSLASH,
+	[3] = KEY_0,
+	[4] = KEY_RIGHTBRACE,
+	[5] = KEY_C,
+	[6] = KEY_9,
+	[7] = KEY_8,
+	[8] = KEY_7,
+	[9] = KEY_B,
+	[10] = KEY_6,
+	[11] = KEY_5,
+	[12] = KEY_4,
+	[13] = KEY_A,
+	[14] = KEY_3,
+	[15] = KEY_2,
+	[16] = KEY_1
+};
+
+struct kp_data {
+	unsigned short btncode[ARRAY_SIZE(pcf8574_kp_btncode)];
+	struct input_dev *idev;
+	struct i2c_client *client;
+	char name[64];
+	char phys[32];
+	unsigned char laststate;
+};
+
+static short read_state(struct kp_data *lp)
+{
+	unsigned char x, y, a, b;
+
+	i2c_smbus_write_byte(lp->client, 240);
+	x = 0xF & (~(i2c_smbus_read_byte(lp->client) >> 4));
+
+	i2c_smbus_write_byte(lp->client, 15);
+	y = 0xF & (~i2c_smbus_read_byte(lp->client));
+
+	for (a = 0; x > 0; a++)
+		x = x >> 1;
+	for (b = 0; y > 0; b++)
+		y = y >> 1;
+
+	return ((a - 1) * 4) + b;
+}
+
+static irqreturn_t pcf8574_kp_irq_handler(int irq, void *dev_id)
+{
+	struct kp_data *lp = dev_id;
+	unsigned char nextstate = read_state(lp);
+
+	if (lp->laststate != nextstate) {
+		int key_down = nextstate < ARRAY_SIZE(lp->btncode);
+		unsigned short keycode = key_down ?
+			lp->btncode[nextstate] : lp->btncode[lp->laststate];
+
+		input_report_key(lp->idev, keycode, key_down);
+		input_sync(lp->idev);
+
+		lp->laststate = nextstate;
+	}
+
+	return IRQ_HANDLED;
+}
+
+static int pcf8574_kp_probe(struct i2c_client *client, const struct i2c_device_id *id)
+{
+	int i, ret;
+	struct input_dev *idev;
+	struct kp_data *lp;
+
+	if (i2c_smbus_write_byte(client, 240) < 0) {
+		dev_err(&client->dev, "probe: write fail\n");
+		return -ENODEV;
+	}
+
+	lp = kzalloc(sizeof(*lp), GFP_KERNEL);
+	if (!lp)
+		return -ENOMEM;
+
+	idev = input_allocate_device();
+	if (!idev) {
+		dev_err(&client->dev, "Can't allocate input device\n");
+		ret = -ENOMEM;
+		goto fail_allocate;
+	}
+
+	lp->idev = idev;
+	lp->client = client;
+
+	idev->evbit[0] = BIT_MASK(EV_KEY);
+	idev->keycode = lp->btncode;
+	idev->keycodesize = sizeof(lp->btncode[0]);
+	idev->keycodemax = ARRAY_SIZE(lp->btncode);
+
+	for (i = 0; i < ARRAY_SIZE(pcf8574_kp_btncode); i++) {
+		if (lp->btncode[i] <= KEY_MAX) {
+			lp->btncode[i] = pcf8574_kp_btncode[i];
+			__set_bit(lp->btncode[i], idev->keybit);
+		}
+	}
+	__clear_bit(KEY_RESERVED, idev->keybit);
+
+	sprintf(lp->name, DRV_NAME);
+	sprintf(lp->phys, "kp_data/input0");
+
+	idev->name = lp->name;
+	idev->phys = lp->phys;
+	idev->id.bustype = BUS_I2C;
+	idev->id.vendor = 0x0001;
+	idev->id.product = 0x0001;
+	idev->id.version = 0x0100;
+
+	lp->laststate = read_state(lp);
+
+	ret = request_threaded_irq(client->irq, NULL, pcf8574_kp_irq_handler,
+				   IRQF_TRIGGER_LOW | IRQF_ONESHOT,
+				   DRV_NAME, lp);
+	if (ret) {
+		dev_err(&client->dev, "IRQ %d is not free\n", client->irq);
+		goto fail_free_device;
+	}
+
+	ret = input_register_device(idev);
+	if (ret) {
+		dev_err(&client->dev, "input_register_device() failed\n");
+		goto fail_free_irq;
+	}
+
+	i2c_set_clientdata(client, lp);
+	return 0;
+
+ fail_free_irq:
+	free_irq(client->irq, lp);
+ fail_free_device:
+	input_free_device(idev);
+ fail_allocate:
+	kfree(lp);
+
+	return ret;
+}
+
+static void pcf8574_kp_remove(struct i2c_client *client)
+{
+	struct kp_data *lp = i2c_get_clientdata(client);
+
+	free_irq(client->irq, lp);
+
+	input_unregister_device(lp->idev);
+	kfree(lp);
+}
+
+#ifdef CONFIG_PM
+static int pcf8574_kp_resume(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+
+	enable_irq(client->irq);
+
+	return 0;
+}
+
+static int pcf8574_kp_suspend(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+
+	disable_irq(client->irq);
+
+	return 0;
+}
+
+static const struct dev_pm_ops pcf8574_kp_pm_ops = {
+	.suspend	= pcf8574_kp_suspend,
+	.resume		= pcf8574_kp_resume,
+};
+
+#else
+# define pcf8574_kp_resume  NULL
+# define pcf8574_kp_suspend NULL
+#endif
+
+static const struct i2c_device_id pcf8574_kp_id[] = {
+	{ DRV_NAME, 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, pcf8574_kp_id);
+
+static struct i2c_driver pcf8574_kp_driver = {
+	.driver = {
+		.name  = DRV_NAME,
+#ifdef CONFIG_PM
+		.pm = &pcf8574_kp_pm_ops,
+#endif
+	},
+	.probe    = pcf8574_kp_probe,
+	.remove   = pcf8574_kp_remove,
+	.id_table = pcf8574_kp_id,
+};
+
+module_i2c_driver(pcf8574_kp_driver);
+
+MODULE_AUTHOR("Michael Hennerich");
+MODULE_DESCRIPTION("Keypad input driver for 16 keys connected to PCF8574");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/misc/pcspkr.c b/drivers/input/misc/pcspkr.c
new file mode 100644
index 000000000..9c666b2f1
--- /dev/null
+++ b/drivers/input/misc/pcspkr.c
@@ -0,0 +1,136 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ *  PC Speaker beeper driver for Linux
+ *
+ *  Copyright (c) 2002 Vojtech Pavlik
+ *  Copyright (c) 1992 Orest Zborowski
+ */
+
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/i8253.h>
+#include <linux/input.h>
+#include <linux/platform_device.h>
+#include <linux/timex.h>
+#include <linux/io.h>
+
+MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
+MODULE_DESCRIPTION("PC Speaker beeper driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:pcspkr");
+
+static int pcspkr_event(struct input_dev *dev, unsigned int type,
+			unsigned int code, int value)
+{
+	unsigned int count = 0;
+	unsigned long flags;
+
+	if (type != EV_SND)
+		return -EINVAL;
+
+	switch (code) {
+	case SND_BELL:
+		if (value)
+			value = 1000;
+		break;
+	case SND_TONE:
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	if (value > 20 && value < 32767)
+		count = PIT_TICK_RATE / value;
+
+	raw_spin_lock_irqsave(&i8253_lock, flags);
+
+	if (count) {
+		/* set command for counter 2, 2 byte write */
+		outb_p(0xB6, 0x43);
+		/* select desired HZ */
+		outb_p(count & 0xff, 0x42);
+		outb((count >> 8) & 0xff, 0x42);
+		/* enable counter 2 */
+		outb_p(inb_p(0x61) | 3, 0x61);
+	} else {
+		/* disable counter 2 */
+		outb(inb_p(0x61) & 0xFC, 0x61);
+	}
+
+	raw_spin_unlock_irqrestore(&i8253_lock, flags);
+
+	return 0;
+}
+
+static int pcspkr_probe(struct platform_device *dev)
+{
+	struct input_dev *pcspkr_dev;
+	int err;
+
+	pcspkr_dev = input_allocate_device();
+	if (!pcspkr_dev)
+		return -ENOMEM;
+
+	pcspkr_dev->name = "PC Speaker";
+	pcspkr_dev->phys = "isa0061/input0";
+	pcspkr_dev->id.bustype = BUS_ISA;
+	pcspkr_dev->id.vendor = 0x001f;
+	pcspkr_dev->id.product = 0x0001;
+	pcspkr_dev->id.version = 0x0100;
+	pcspkr_dev->dev.parent = &dev->dev;
+
+	pcspkr_dev->evbit[0] = BIT_MASK(EV_SND);
+	pcspkr_dev->sndbit[0] = BIT_MASK(SND_BELL) | BIT_MASK(SND_TONE);
+	pcspkr_dev->event = pcspkr_event;
+
+	err = input_register_device(pcspkr_dev);
+	if (err) {
+		input_free_device(pcspkr_dev);
+		return err;
+	}
+
+	platform_set_drvdata(dev, pcspkr_dev);
+
+	return 0;
+}
+
+static int pcspkr_remove(struct platform_device *dev)
+{
+	struct input_dev *pcspkr_dev = platform_get_drvdata(dev);
+
+	input_unregister_device(pcspkr_dev);
+	/* turn off the speaker */
+	pcspkr_event(NULL, EV_SND, SND_BELL, 0);
+
+	return 0;
+}
+
+static int pcspkr_suspend(struct device *dev)
+{
+	pcspkr_event(NULL, EV_SND, SND_BELL, 0);
+
+	return 0;
+}
+
+static void pcspkr_shutdown(struct platform_device *dev)
+{
+	/* turn off the speaker */
+	pcspkr_event(NULL, EV_SND, SND_BELL, 0);
+}
+
+static const struct dev_pm_ops pcspkr_pm_ops = {
+	.suspend = pcspkr_suspend,
+};
+
+static struct platform_driver pcspkr_platform_driver = {
+	.driver		= {
+		.name	= "pcspkr",
+		.pm	= &pcspkr_pm_ops,
+	},
+	.probe		= pcspkr_probe,
+	.remove		= pcspkr_remove,
+	.shutdown	= pcspkr_shutdown,
+};
+module_platform_driver(pcspkr_platform_driver);
+
diff --git a/drivers/input/misc/pm8941-pwrkey.c b/drivers/input/misc/pm8941-pwrkey.c
new file mode 100644
index 000000000..5dd68a02c
--- /dev/null
+++ b/drivers/input/misc/pm8941-pwrkey.c
@@ -0,0 +1,481 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2010-2011, 2020-2021, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2014, Sony Mobile Communications Inc.
+ */
+
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/ktime.h>
+#include <linux/log2.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/reboot.h>
+#include <linux/regmap.h>
+
+#define PON_REV2			0x01
+
+#define PON_SUBTYPE			0x05
+
+#define PON_SUBTYPE_PRIMARY		0x01
+#define PON_SUBTYPE_SECONDARY		0x02
+#define PON_SUBTYPE_1REG		0x03
+#define PON_SUBTYPE_GEN2_PRIMARY	0x04
+#define PON_SUBTYPE_GEN2_SECONDARY	0x05
+#define PON_SUBTYPE_GEN3_PBS		0x08
+#define PON_SUBTYPE_GEN3_HLOS		0x09
+
+#define PON_RT_STS			0x10
+#define  PON_KPDPWR_N_SET		BIT(0)
+#define  PON_RESIN_N_SET		BIT(1)
+#define  PON_GEN3_RESIN_N_SET		BIT(6)
+#define  PON_GEN3_KPDPWR_N_SET		BIT(7)
+
+#define PON_PS_HOLD_RST_CTL		0x5a
+#define PON_PS_HOLD_RST_CTL2		0x5b
+#define  PON_PS_HOLD_ENABLE		BIT(7)
+#define  PON_PS_HOLD_TYPE_MASK		0x0f
+#define  PON_PS_HOLD_TYPE_WARM_RESET	1
+#define  PON_PS_HOLD_TYPE_SHUTDOWN	4
+#define  PON_PS_HOLD_TYPE_HARD_RESET	7
+
+#define PON_PULL_CTL			0x70
+#define  PON_KPDPWR_PULL_UP		BIT(1)
+#define  PON_RESIN_PULL_UP		BIT(0)
+
+#define PON_DBC_CTL			0x71
+#define  PON_DBC_DELAY_MASK_GEN1	0x7
+#define  PON_DBC_DELAY_MASK_GEN2	0xf
+#define  PON_DBC_SHIFT_GEN1		6
+#define  PON_DBC_SHIFT_GEN2		14
+
+struct pm8941_data {
+	unsigned int	pull_up_bit;
+	unsigned int	status_bit;
+	bool		supports_ps_hold_poff_config;
+	bool		supports_debounce_config;
+	bool		has_pon_pbs;
+	const char	*name;
+	const char	*phys;
+};
+
+struct pm8941_pwrkey {
+	struct device *dev;
+	int irq;
+	u32 baseaddr;
+	u32 pon_pbs_baseaddr;
+	struct regmap *regmap;
+	struct input_dev *input;
+
+	unsigned int revision;
+	unsigned int subtype;
+	struct notifier_block reboot_notifier;
+
+	u32 code;
+	u32 sw_debounce_time_us;
+	ktime_t sw_debounce_end_time;
+	bool last_status;
+	const struct pm8941_data *data;
+};
+
+static int pm8941_reboot_notify(struct notifier_block *nb,
+				unsigned long code, void *unused)
+{
+	struct pm8941_pwrkey *pwrkey = container_of(nb, struct pm8941_pwrkey,
+						    reboot_notifier);
+	unsigned int enable_reg;
+	unsigned int reset_type;
+	int error;
+
+	/* PMICs with revision 0 have the enable bit in same register as ctrl */
+	if (pwrkey->revision == 0)
+		enable_reg = PON_PS_HOLD_RST_CTL;
+	else
+		enable_reg = PON_PS_HOLD_RST_CTL2;
+
+	error = regmap_update_bits(pwrkey->regmap,
+				   pwrkey->baseaddr + enable_reg,
+				   PON_PS_HOLD_ENABLE,
+				   0);
+	if (error)
+		dev_err(pwrkey->dev,
+			"unable to clear ps hold reset enable: %d\n",
+			error);
+
+	/*
+	 * Updates of PON_PS_HOLD_ENABLE requires 3 sleep cycles between
+	 * writes.
+	 */
+	usleep_range(100, 1000);
+
+	switch (code) {
+	case SYS_HALT:
+	case SYS_POWER_OFF:
+		reset_type = PON_PS_HOLD_TYPE_SHUTDOWN;
+		break;
+	case SYS_RESTART:
+	default:
+		if (reboot_mode == REBOOT_WARM)
+			reset_type = PON_PS_HOLD_TYPE_WARM_RESET;
+		else
+			reset_type = PON_PS_HOLD_TYPE_HARD_RESET;
+		break;
+	}
+
+	error = regmap_update_bits(pwrkey->regmap,
+				   pwrkey->baseaddr + PON_PS_HOLD_RST_CTL,
+				   PON_PS_HOLD_TYPE_MASK,
+				   reset_type);
+	if (error)
+		dev_err(pwrkey->dev, "unable to set ps hold reset type: %d\n",
+			error);
+
+	error = regmap_update_bits(pwrkey->regmap,
+				   pwrkey->baseaddr + enable_reg,
+				   PON_PS_HOLD_ENABLE,
+				   PON_PS_HOLD_ENABLE);
+	if (error)
+		dev_err(pwrkey->dev, "unable to re-set enable: %d\n", error);
+
+	return NOTIFY_DONE;
+}
+
+static irqreturn_t pm8941_pwrkey_irq(int irq, void *_data)
+{
+	struct pm8941_pwrkey *pwrkey = _data;
+	unsigned int sts;
+	int err;
+
+	if (pwrkey->sw_debounce_time_us) {
+		if (ktime_before(ktime_get(), pwrkey->sw_debounce_end_time)) {
+			dev_dbg(pwrkey->dev,
+				"ignoring key event received before debounce end %llu us\n",
+				pwrkey->sw_debounce_end_time);
+			return IRQ_HANDLED;
+		}
+	}
+
+	err = regmap_read(pwrkey->regmap, pwrkey->baseaddr + PON_RT_STS, &sts);
+	if (err)
+		return IRQ_HANDLED;
+
+	sts &= pwrkey->data->status_bit;
+
+	if (pwrkey->sw_debounce_time_us && !sts)
+		pwrkey->sw_debounce_end_time = ktime_add_us(ktime_get(),
+						pwrkey->sw_debounce_time_us);
+
+	/*
+	 * Simulate a press event in case a release event occurred without a
+	 * corresponding press event.
+	 */
+	if (!pwrkey->last_status && !sts) {
+		input_report_key(pwrkey->input, pwrkey->code, 1);
+		input_sync(pwrkey->input);
+	}
+	pwrkey->last_status = sts;
+
+	input_report_key(pwrkey->input, pwrkey->code, sts);
+	input_sync(pwrkey->input);
+
+	return IRQ_HANDLED;
+}
+
+static int pm8941_pwrkey_sw_debounce_init(struct pm8941_pwrkey *pwrkey)
+{
+	unsigned int val, addr, mask;
+	int error;
+
+	if (pwrkey->data->has_pon_pbs && !pwrkey->pon_pbs_baseaddr) {
+		dev_err(pwrkey->dev,
+			"PON_PBS address missing, can't read HW debounce time\n");
+		return 0;
+	}
+
+	if (pwrkey->pon_pbs_baseaddr)
+		addr = pwrkey->pon_pbs_baseaddr + PON_DBC_CTL;
+	else
+		addr = pwrkey->baseaddr + PON_DBC_CTL;
+	error = regmap_read(pwrkey->regmap, addr, &val);
+	if (error)
+		return error;
+
+	if (pwrkey->subtype >= PON_SUBTYPE_GEN2_PRIMARY)
+		mask = 0xf;
+	else
+		mask = 0x7;
+
+	pwrkey->sw_debounce_time_us =
+		2 * USEC_PER_SEC / (1 << (mask - (val & mask)));
+
+	dev_dbg(pwrkey->dev, "SW debounce time = %u us\n",
+		pwrkey->sw_debounce_time_us);
+
+	return 0;
+}
+
+static int __maybe_unused pm8941_pwrkey_suspend(struct device *dev)
+{
+	struct pm8941_pwrkey *pwrkey = dev_get_drvdata(dev);
+
+	if (device_may_wakeup(dev))
+		enable_irq_wake(pwrkey->irq);
+
+	return 0;
+}
+
+static int __maybe_unused pm8941_pwrkey_resume(struct device *dev)
+{
+	struct pm8941_pwrkey *pwrkey = dev_get_drvdata(dev);
+
+	if (device_may_wakeup(dev))
+		disable_irq_wake(pwrkey->irq);
+
+	return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(pm8941_pwr_key_pm_ops,
+			 pm8941_pwrkey_suspend, pm8941_pwrkey_resume);
+
+static int pm8941_pwrkey_probe(struct platform_device *pdev)
+{
+	struct pm8941_pwrkey *pwrkey;
+	bool pull_up;
+	struct device *parent;
+	struct device_node *regmap_node;
+	const __be32 *addr;
+	u32 req_delay, mask, delay_shift;
+	int error;
+
+	if (of_property_read_u32(pdev->dev.of_node, "debounce", &req_delay))
+		req_delay = 15625;
+
+	if (req_delay > 2000000 || req_delay == 0) {
+		dev_err(&pdev->dev, "invalid debounce time: %u\n", req_delay);
+		return -EINVAL;
+	}
+
+	pull_up = of_property_read_bool(pdev->dev.of_node, "bias-pull-up");
+
+	pwrkey = devm_kzalloc(&pdev->dev, sizeof(*pwrkey), GFP_KERNEL);
+	if (!pwrkey)
+		return -ENOMEM;
+
+	pwrkey->dev = &pdev->dev;
+	pwrkey->data = of_device_get_match_data(&pdev->dev);
+
+	parent = pdev->dev.parent;
+	regmap_node = pdev->dev.of_node;
+	pwrkey->regmap = dev_get_regmap(parent, NULL);
+	if (!pwrkey->regmap) {
+		regmap_node = parent->of_node;
+		/*
+		 * We failed to get regmap for parent. Let's see if we are
+		 * a child of pon node and read regmap and reg from its
+		 * parent.
+		 */
+		pwrkey->regmap = dev_get_regmap(parent->parent, NULL);
+		if (!pwrkey->regmap) {
+			dev_err(&pdev->dev, "failed to locate regmap\n");
+			return -ENODEV;
+		}
+	}
+
+	addr = of_get_address(regmap_node, 0, NULL, NULL);
+	if (!addr) {
+		dev_err(&pdev->dev, "reg property missing\n");
+		return -EINVAL;
+	}
+	pwrkey->baseaddr = be32_to_cpup(addr);
+
+	if (pwrkey->data->has_pon_pbs) {
+		/* PON_PBS base address is optional */
+		addr = of_get_address(regmap_node, 1, NULL, NULL);
+		if (addr)
+			pwrkey->pon_pbs_baseaddr = be32_to_cpup(addr);
+	}
+
+	pwrkey->irq = platform_get_irq(pdev, 0);
+	if (pwrkey->irq < 0)
+		return pwrkey->irq;
+
+	error = regmap_read(pwrkey->regmap, pwrkey->baseaddr + PON_REV2,
+			    &pwrkey->revision);
+	if (error) {
+		dev_err(&pdev->dev, "failed to read revision: %d\n", error);
+		return error;
+	}
+
+	error = regmap_read(pwrkey->regmap, pwrkey->baseaddr + PON_SUBTYPE,
+			    &pwrkey->subtype);
+	if (error) {
+		dev_err(&pdev->dev, "failed to read subtype: %d\n", error);
+		return error;
+	}
+
+	error = of_property_read_u32(pdev->dev.of_node, "linux,code",
+				     &pwrkey->code);
+	if (error) {
+		dev_dbg(&pdev->dev,
+			"no linux,code assuming power (%d)\n", error);
+		pwrkey->code = KEY_POWER;
+	}
+
+	pwrkey->input = devm_input_allocate_device(&pdev->dev);
+	if (!pwrkey->input) {
+		dev_dbg(&pdev->dev, "unable to allocate input device\n");
+		return -ENOMEM;
+	}
+
+	input_set_capability(pwrkey->input, EV_KEY, pwrkey->code);
+
+	pwrkey->input->name = pwrkey->data->name;
+	pwrkey->input->phys = pwrkey->data->phys;
+
+	if (pwrkey->data->supports_debounce_config) {
+		if (pwrkey->subtype >= PON_SUBTYPE_GEN2_PRIMARY) {
+			mask = PON_DBC_DELAY_MASK_GEN2;
+			delay_shift = PON_DBC_SHIFT_GEN2;
+		} else {
+			mask = PON_DBC_DELAY_MASK_GEN1;
+			delay_shift = PON_DBC_SHIFT_GEN1;
+		}
+
+		req_delay = (req_delay << delay_shift) / USEC_PER_SEC;
+		req_delay = ilog2(req_delay);
+
+		error = regmap_update_bits(pwrkey->regmap,
+					   pwrkey->baseaddr + PON_DBC_CTL,
+					   mask,
+					   req_delay);
+		if (error) {
+			dev_err(&pdev->dev, "failed to set debounce: %d\n",
+				error);
+			return error;
+		}
+	}
+
+	error = pm8941_pwrkey_sw_debounce_init(pwrkey);
+	if (error)
+		return error;
+
+	if (pwrkey->data->pull_up_bit) {
+		error = regmap_update_bits(pwrkey->regmap,
+					   pwrkey->baseaddr + PON_PULL_CTL,
+					   pwrkey->data->pull_up_bit,
+					   pull_up ? pwrkey->data->pull_up_bit :
+						     0);
+		if (error) {
+			dev_err(&pdev->dev, "failed to set pull: %d\n", error);
+			return error;
+		}
+	}
+
+	error = devm_request_threaded_irq(&pdev->dev, pwrkey->irq,
+					  NULL, pm8941_pwrkey_irq,
+					  IRQF_ONESHOT,
+					  pwrkey->data->name, pwrkey);
+	if (error) {
+		dev_err(&pdev->dev, "failed requesting IRQ: %d\n", error);
+		return error;
+	}
+
+	error = input_register_device(pwrkey->input);
+	if (error) {
+		dev_err(&pdev->dev, "failed to register input device: %d\n",
+			error);
+		return error;
+	}
+
+	if (pwrkey->data->supports_ps_hold_poff_config) {
+		pwrkey->reboot_notifier.notifier_call = pm8941_reboot_notify;
+		error = register_reboot_notifier(&pwrkey->reboot_notifier);
+		if (error) {
+			dev_err(&pdev->dev, "failed to register reboot notifier: %d\n",
+				error);
+			return error;
+		}
+	}
+
+	platform_set_drvdata(pdev, pwrkey);
+	device_init_wakeup(&pdev->dev, 1);
+
+	return 0;
+}
+
+static int pm8941_pwrkey_remove(struct platform_device *pdev)
+{
+	struct pm8941_pwrkey *pwrkey = platform_get_drvdata(pdev);
+
+	if (pwrkey->data->supports_ps_hold_poff_config)
+		unregister_reboot_notifier(&pwrkey->reboot_notifier);
+
+	return 0;
+}
+
+static const struct pm8941_data pwrkey_data = {
+	.pull_up_bit = PON_KPDPWR_PULL_UP,
+	.status_bit = PON_KPDPWR_N_SET,
+	.name = "pm8941_pwrkey",
+	.phys = "pm8941_pwrkey/input0",
+	.supports_ps_hold_poff_config = true,
+	.supports_debounce_config = true,
+	.has_pon_pbs = false,
+};
+
+static const struct pm8941_data resin_data = {
+	.pull_up_bit = PON_RESIN_PULL_UP,
+	.status_bit = PON_RESIN_N_SET,
+	.name = "pm8941_resin",
+	.phys = "pm8941_resin/input0",
+	.supports_ps_hold_poff_config = true,
+	.supports_debounce_config = true,
+	.has_pon_pbs = false,
+};
+
+static const struct pm8941_data pon_gen3_pwrkey_data = {
+	.status_bit = PON_GEN3_KPDPWR_N_SET,
+	.name = "pmic_pwrkey",
+	.phys = "pmic_pwrkey/input0",
+	.supports_ps_hold_poff_config = false,
+	.supports_debounce_config = false,
+	.has_pon_pbs = true,
+};
+
+static const struct pm8941_data pon_gen3_resin_data = {
+	.status_bit = PON_GEN3_RESIN_N_SET,
+	.name = "pmic_resin",
+	.phys = "pmic_resin/input0",
+	.supports_ps_hold_poff_config = false,
+	.supports_debounce_config = false,
+	.has_pon_pbs = true,
+};
+
+static const struct of_device_id pm8941_pwr_key_id_table[] = {
+	{ .compatible = "qcom,pm8941-pwrkey", .data = &pwrkey_data },
+	{ .compatible = "qcom,pm8941-resin", .data = &resin_data },
+	{ .compatible = "qcom,pmk8350-pwrkey", .data = &pon_gen3_pwrkey_data },
+	{ .compatible = "qcom,pmk8350-resin", .data = &pon_gen3_resin_data },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, pm8941_pwr_key_id_table);
+
+static struct platform_driver pm8941_pwrkey_driver = {
+	.probe = pm8941_pwrkey_probe,
+	.remove = pm8941_pwrkey_remove,
+	.driver = {
+		.name = "pm8941-pwrkey",
+		.pm = &pm8941_pwr_key_pm_ops,
+		.of_match_table = of_match_ptr(pm8941_pwr_key_id_table),
+	},
+};
+module_platform_driver(pm8941_pwrkey_driver);
+
+MODULE_DESCRIPTION("PM8941 Power Key driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/input/misc/pm8xxx-vibrator.c b/drivers/input/misc/pm8xxx-vibrator.c
new file mode 100644
index 000000000..53ad25eaf
--- /dev/null
+++ b/drivers/input/misc/pm8xxx-vibrator.c
@@ -0,0 +1,262 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved.
+ */
+
+#include <linux/errno.h>
+#include <linux/input.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+
+#define VIB_MAX_LEVEL_mV	(3100)
+#define VIB_MIN_LEVEL_mV	(1200)
+#define VIB_MAX_LEVELS		(VIB_MAX_LEVEL_mV - VIB_MIN_LEVEL_mV)
+
+#define MAX_FF_SPEED		0xff
+
+struct pm8xxx_regs {
+	unsigned int enable_addr;
+	unsigned int enable_mask;
+
+	unsigned int drv_addr;
+	unsigned int drv_mask;
+	unsigned int drv_shift;
+	unsigned int drv_en_manual_mask;
+};
+
+static const struct pm8xxx_regs pm8058_regs = {
+	.drv_addr = 0x4A,
+	.drv_mask = 0xf8,
+	.drv_shift = 3,
+	.drv_en_manual_mask = 0xfc,
+};
+
+static struct pm8xxx_regs pm8916_regs = {
+	.enable_addr = 0xc046,
+	.enable_mask = BIT(7),
+	.drv_addr = 0xc041,
+	.drv_mask = 0x1F,
+	.drv_shift = 0,
+	.drv_en_manual_mask = 0,
+};
+
+/**
+ * struct pm8xxx_vib - structure to hold vibrator data
+ * @vib_input_dev: input device supporting force feedback
+ * @work: work structure to set the vibration parameters
+ * @regmap: regmap for register read/write
+ * @regs: registers' info
+ * @speed: speed of vibration set from userland
+ * @active: state of vibrator
+ * @level: level of vibration to set in the chip
+ * @reg_vib_drv: regs->drv_addr register value
+ */
+struct pm8xxx_vib {
+	struct input_dev *vib_input_dev;
+	struct work_struct work;
+	struct regmap *regmap;
+	const struct pm8xxx_regs *regs;
+	int speed;
+	int level;
+	bool active;
+	u8  reg_vib_drv;
+};
+
+/**
+ * pm8xxx_vib_set - handler to start/stop vibration
+ * @vib: pointer to vibrator structure
+ * @on: state to set
+ */
+static int pm8xxx_vib_set(struct pm8xxx_vib *vib, bool on)
+{
+	int rc;
+	unsigned int val = vib->reg_vib_drv;
+	const struct pm8xxx_regs *regs = vib->regs;
+
+	if (on)
+		val |= (vib->level << regs->drv_shift) & regs->drv_mask;
+	else
+		val &= ~regs->drv_mask;
+
+	rc = regmap_write(vib->regmap, regs->drv_addr, val);
+	if (rc < 0)
+		return rc;
+
+	vib->reg_vib_drv = val;
+
+	if (regs->enable_mask)
+		rc = regmap_update_bits(vib->regmap, regs->enable_addr,
+					regs->enable_mask, on ? ~0 : 0);
+
+	return rc;
+}
+
+/**
+ * pm8xxx_work_handler - worker to set vibration level
+ * @work: pointer to work_struct
+ */
+static void pm8xxx_work_handler(struct work_struct *work)
+{
+	struct pm8xxx_vib *vib = container_of(work, struct pm8xxx_vib, work);
+	const struct pm8xxx_regs *regs = vib->regs;
+	int rc;
+	unsigned int val;
+
+	rc = regmap_read(vib->regmap, regs->drv_addr, &val);
+	if (rc < 0)
+		return;
+
+	/*
+	 * pmic vibrator supports voltage ranges from 1.2 to 3.1V, so
+	 * scale the level to fit into these ranges.
+	 */
+	if (vib->speed) {
+		vib->active = true;
+		vib->level = ((VIB_MAX_LEVELS * vib->speed) / MAX_FF_SPEED) +
+						VIB_MIN_LEVEL_mV;
+		vib->level /= 100;
+	} else {
+		vib->active = false;
+		vib->level = VIB_MIN_LEVEL_mV / 100;
+	}
+
+	pm8xxx_vib_set(vib, vib->active);
+}
+
+/**
+ * pm8xxx_vib_close - callback of input close callback
+ * @dev: input device pointer
+ *
+ * Turns off the vibrator.
+ */
+static void pm8xxx_vib_close(struct input_dev *dev)
+{
+	struct pm8xxx_vib *vib = input_get_drvdata(dev);
+
+	cancel_work_sync(&vib->work);
+	if (vib->active)
+		pm8xxx_vib_set(vib, false);
+}
+
+/**
+ * pm8xxx_vib_play_effect - function to handle vib effects.
+ * @dev: input device pointer
+ * @data: data of effect
+ * @effect: effect to play
+ *
+ * Currently this driver supports only rumble effects.
+ */
+static int pm8xxx_vib_play_effect(struct input_dev *dev, void *data,
+				  struct ff_effect *effect)
+{
+	struct pm8xxx_vib *vib = input_get_drvdata(dev);
+
+	vib->speed = effect->u.rumble.strong_magnitude >> 8;
+	if (!vib->speed)
+		vib->speed = effect->u.rumble.weak_magnitude >> 9;
+
+	schedule_work(&vib->work);
+
+	return 0;
+}
+
+static int pm8xxx_vib_probe(struct platform_device *pdev)
+{
+	struct pm8xxx_vib *vib;
+	struct input_dev *input_dev;
+	int error;
+	unsigned int val;
+	const struct pm8xxx_regs *regs;
+
+	vib = devm_kzalloc(&pdev->dev, sizeof(*vib), GFP_KERNEL);
+	if (!vib)
+		return -ENOMEM;
+
+	vib->regmap = dev_get_regmap(pdev->dev.parent, NULL);
+	if (!vib->regmap)
+		return -ENODEV;
+
+	input_dev = devm_input_allocate_device(&pdev->dev);
+	if (!input_dev)
+		return -ENOMEM;
+
+	INIT_WORK(&vib->work, pm8xxx_work_handler);
+	vib->vib_input_dev = input_dev;
+
+	regs = of_device_get_match_data(&pdev->dev);
+
+	/* operate in manual mode */
+	error = regmap_read(vib->regmap, regs->drv_addr, &val);
+	if (error < 0)
+		return error;
+
+	val &= regs->drv_en_manual_mask;
+	error = regmap_write(vib->regmap, regs->drv_addr, val);
+	if (error < 0)
+		return error;
+
+	vib->regs = regs;
+	vib->reg_vib_drv = val;
+
+	input_dev->name = "pm8xxx_vib_ffmemless";
+	input_dev->id.version = 1;
+	input_dev->close = pm8xxx_vib_close;
+	input_set_drvdata(input_dev, vib);
+	input_set_capability(vib->vib_input_dev, EV_FF, FF_RUMBLE);
+
+	error = input_ff_create_memless(input_dev, NULL,
+					pm8xxx_vib_play_effect);
+	if (error) {
+		dev_err(&pdev->dev,
+			"couldn't register vibrator as FF device\n");
+		return error;
+	}
+
+	error = input_register_device(input_dev);
+	if (error) {
+		dev_err(&pdev->dev, "couldn't register input device\n");
+		return error;
+	}
+
+	platform_set_drvdata(pdev, vib);
+	return 0;
+}
+
+static int __maybe_unused pm8xxx_vib_suspend(struct device *dev)
+{
+	struct pm8xxx_vib *vib = dev_get_drvdata(dev);
+
+	/* Turn off the vibrator */
+	pm8xxx_vib_set(vib, false);
+
+	return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(pm8xxx_vib_pm_ops, pm8xxx_vib_suspend, NULL);
+
+static const struct of_device_id pm8xxx_vib_id_table[] = {
+	{ .compatible = "qcom,pm8058-vib", .data = &pm8058_regs },
+	{ .compatible = "qcom,pm8921-vib", .data = &pm8058_regs },
+	{ .compatible = "qcom,pm8916-vib", .data = &pm8916_regs },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, pm8xxx_vib_id_table);
+
+static struct platform_driver pm8xxx_vib_driver = {
+	.probe		= pm8xxx_vib_probe,
+	.driver		= {
+		.name	= "pm8xxx-vib",
+		.pm	= &pm8xxx_vib_pm_ops,
+		.of_match_table = pm8xxx_vib_id_table,
+	},
+};
+module_platform_driver(pm8xxx_vib_driver);
+
+MODULE_ALIAS("platform:pm8xxx_vib");
+MODULE_DESCRIPTION("PMIC8xxx vibrator driver based on ff-memless framework");
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Amy Maloche <amaloche@codeaurora.org>");
diff --git a/drivers/input/misc/pmic8xxx-pwrkey.c b/drivers/input/misc/pmic8xxx-pwrkey.c
new file mode 100644
index 000000000..0e818a3d2
--- /dev/null
+++ b/drivers/input/misc/pmic8xxx-pwrkey.c
@@ -0,0 +1,454 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/log2.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+
+#define PON_CNTL_1 0x1C
+#define PON_CNTL_PULL_UP BIT(7)
+#define PON_CNTL_TRIG_DELAY_MASK (0x7)
+#define PON_CNTL_1_PULL_UP_EN			0xe0
+#define PON_CNTL_1_USB_PWR_EN			0x10
+#define PON_CNTL_1_WD_EN_RESET			0x08
+
+#define PM8058_SLEEP_CTRL			0x02b
+#define PM8921_SLEEP_CTRL			0x10a
+
+#define SLEEP_CTRL_SMPL_EN_RESET		0x04
+
+/* Regulator master enable addresses */
+#define REG_PM8058_VREG_EN_MSM			0x018
+#define REG_PM8058_VREG_EN_GRP_5_4		0x1c8
+
+/* Regulator control registers for shutdown/reset */
+#define PM8058_S0_CTRL				0x004
+#define PM8058_S1_CTRL				0x005
+#define PM8058_S3_CTRL				0x111
+#define PM8058_L21_CTRL				0x120
+#define PM8058_L22_CTRL				0x121
+
+#define PM8058_REGULATOR_ENABLE_MASK		0x80
+#define PM8058_REGULATOR_ENABLE			0x80
+#define PM8058_REGULATOR_DISABLE		0x00
+#define PM8058_REGULATOR_PULL_DOWN_MASK		0x40
+#define PM8058_REGULATOR_PULL_DOWN_EN		0x40
+
+/* Buck CTRL register */
+#define PM8058_SMPS_LEGACY_VREF_SEL		0x20
+#define PM8058_SMPS_LEGACY_VPROG_MASK		0x1f
+#define PM8058_SMPS_ADVANCED_BAND_MASK		0xC0
+#define PM8058_SMPS_ADVANCED_BAND_SHIFT		6
+#define PM8058_SMPS_ADVANCED_VPROG_MASK		0x3f
+
+/* Buck TEST2 registers for shutdown/reset */
+#define PM8058_S0_TEST2				0x084
+#define PM8058_S1_TEST2				0x085
+#define PM8058_S3_TEST2				0x11a
+
+#define PM8058_REGULATOR_BANK_WRITE		0x80
+#define PM8058_REGULATOR_BANK_MASK		0x70
+#define PM8058_REGULATOR_BANK_SHIFT		4
+#define PM8058_REGULATOR_BANK_SEL(n)	((n) << PM8058_REGULATOR_BANK_SHIFT)
+
+/* Buck TEST2 register bank 1 */
+#define PM8058_SMPS_LEGACY_VLOW_SEL		0x01
+
+/* Buck TEST2 register bank 7 */
+#define PM8058_SMPS_ADVANCED_MODE_MASK		0x02
+#define PM8058_SMPS_ADVANCED_MODE		0x02
+#define PM8058_SMPS_LEGACY_MODE			0x00
+
+/**
+ * struct pmic8xxx_pwrkey - pmic8xxx pwrkey information
+ * @key_press_irq: key press irq number
+ * @regmap: device regmap
+ * @shutdown_fn: shutdown configuration function
+ */
+struct pmic8xxx_pwrkey {
+	int key_press_irq;
+	struct regmap *regmap;
+	int (*shutdown_fn)(struct pmic8xxx_pwrkey *, bool);
+};
+
+static irqreturn_t pwrkey_press_irq(int irq, void *_pwr)
+{
+	struct input_dev *pwr = _pwr;
+
+	input_report_key(pwr, KEY_POWER, 1);
+	input_sync(pwr);
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t pwrkey_release_irq(int irq, void *_pwr)
+{
+	struct input_dev *pwr = _pwr;
+
+	input_report_key(pwr, KEY_POWER, 0);
+	input_sync(pwr);
+
+	return IRQ_HANDLED;
+}
+
+static int __maybe_unused pmic8xxx_pwrkey_suspend(struct device *dev)
+{
+	struct pmic8xxx_pwrkey *pwrkey = dev_get_drvdata(dev);
+
+	if (device_may_wakeup(dev))
+		enable_irq_wake(pwrkey->key_press_irq);
+
+	return 0;
+}
+
+static int __maybe_unused pmic8xxx_pwrkey_resume(struct device *dev)
+{
+	struct pmic8xxx_pwrkey *pwrkey = dev_get_drvdata(dev);
+
+	if (device_may_wakeup(dev))
+		disable_irq_wake(pwrkey->key_press_irq);
+
+	return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(pm8xxx_pwr_key_pm_ops,
+		pmic8xxx_pwrkey_suspend, pmic8xxx_pwrkey_resume);
+
+static void pmic8xxx_pwrkey_shutdown(struct platform_device *pdev)
+{
+	struct pmic8xxx_pwrkey *pwrkey = platform_get_drvdata(pdev);
+	int error;
+	u8 mask, val;
+	bool reset = system_state == SYSTEM_RESTART;
+
+	if (pwrkey->shutdown_fn) {
+		error = pwrkey->shutdown_fn(pwrkey, reset);
+		if (error)
+			return;
+	}
+
+	/*
+	 * Select action to perform (reset or shutdown) when PS_HOLD goes low.
+	 * Also ensure that KPD, CBL0, and CBL1 pull ups are enabled and that
+	 * USB charging is enabled.
+	 */
+	mask = PON_CNTL_1_PULL_UP_EN | PON_CNTL_1_USB_PWR_EN;
+	mask |= PON_CNTL_1_WD_EN_RESET;
+	val = mask;
+	if (!reset)
+		val &= ~PON_CNTL_1_WD_EN_RESET;
+
+	regmap_update_bits(pwrkey->regmap, PON_CNTL_1, mask, val);
+}
+
+/*
+ * Set an SMPS regulator to be disabled in its CTRL register, but enabled
+ * in the master enable register.  Also set it's pull down enable bit.
+ * Take care to make sure that the output voltage doesn't change if switching
+ * from advanced mode to legacy mode.
+ */
+static int pm8058_disable_smps_locally_set_pull_down(struct regmap *regmap,
+	u16 ctrl_addr, u16 test2_addr, u16 master_enable_addr,
+	u8 master_enable_bit)
+{
+	int error;
+	u8 vref_sel, vlow_sel, band, vprog, bank;
+	unsigned int reg;
+
+	bank = PM8058_REGULATOR_BANK_SEL(7);
+	error = regmap_write(regmap, test2_addr, bank);
+	if (error)
+		return error;
+
+	error = regmap_read(regmap, test2_addr, &reg);
+	if (error)
+		return error;
+
+	reg &= PM8058_SMPS_ADVANCED_MODE_MASK;
+	/* Check if in advanced mode. */
+	if (reg == PM8058_SMPS_ADVANCED_MODE) {
+		/* Determine current output voltage. */
+		error = regmap_read(regmap, ctrl_addr, &reg);
+		if (error)
+			return error;
+
+		band = reg & PM8058_SMPS_ADVANCED_BAND_MASK;
+		band >>= PM8058_SMPS_ADVANCED_BAND_SHIFT;
+		switch (band) {
+		case 3:
+			vref_sel = 0;
+			vlow_sel = 0;
+			break;
+		case 2:
+			vref_sel = PM8058_SMPS_LEGACY_VREF_SEL;
+			vlow_sel = 0;
+			break;
+		case 1:
+			vref_sel = PM8058_SMPS_LEGACY_VREF_SEL;
+			vlow_sel = PM8058_SMPS_LEGACY_VLOW_SEL;
+			break;
+		default:
+			pr_err("%s: regulator already disabled\n", __func__);
+			return -EPERM;
+		}
+		vprog = reg & PM8058_SMPS_ADVANCED_VPROG_MASK;
+		/* Round up if fine step is in use. */
+		vprog = (vprog + 1) >> 1;
+		if (vprog > PM8058_SMPS_LEGACY_VPROG_MASK)
+			vprog = PM8058_SMPS_LEGACY_VPROG_MASK;
+
+		/* Set VLOW_SEL bit. */
+		bank = PM8058_REGULATOR_BANK_SEL(1);
+		error = regmap_write(regmap, test2_addr, bank);
+		if (error)
+			return error;
+
+		error = regmap_update_bits(regmap, test2_addr,
+			PM8058_REGULATOR_BANK_WRITE | PM8058_REGULATOR_BANK_MASK
+				| PM8058_SMPS_LEGACY_VLOW_SEL,
+			PM8058_REGULATOR_BANK_WRITE |
+			PM8058_REGULATOR_BANK_SEL(1) | vlow_sel);
+		if (error)
+			return error;
+
+		/* Switch to legacy mode */
+		bank = PM8058_REGULATOR_BANK_SEL(7);
+		error = regmap_write(regmap, test2_addr, bank);
+		if (error)
+			return error;
+
+		error = regmap_update_bits(regmap, test2_addr,
+				PM8058_REGULATOR_BANK_WRITE |
+				PM8058_REGULATOR_BANK_MASK |
+				PM8058_SMPS_ADVANCED_MODE_MASK,
+				PM8058_REGULATOR_BANK_WRITE |
+				PM8058_REGULATOR_BANK_SEL(7) |
+				PM8058_SMPS_LEGACY_MODE);
+		if (error)
+			return error;
+
+		/* Enable locally, enable pull down, keep voltage the same. */
+		error = regmap_update_bits(regmap, ctrl_addr,
+			PM8058_REGULATOR_ENABLE_MASK |
+			PM8058_REGULATOR_PULL_DOWN_MASK |
+			PM8058_SMPS_LEGACY_VREF_SEL |
+			PM8058_SMPS_LEGACY_VPROG_MASK,
+			PM8058_REGULATOR_ENABLE | PM8058_REGULATOR_PULL_DOWN_EN
+				| vref_sel | vprog);
+		if (error)
+			return error;
+	}
+
+	/* Enable in master control register. */
+	error = regmap_update_bits(regmap, master_enable_addr,
+			master_enable_bit, master_enable_bit);
+	if (error)
+		return error;
+
+	/* Disable locally and enable pull down. */
+	return regmap_update_bits(regmap, ctrl_addr,
+		PM8058_REGULATOR_ENABLE_MASK | PM8058_REGULATOR_PULL_DOWN_MASK,
+		PM8058_REGULATOR_DISABLE | PM8058_REGULATOR_PULL_DOWN_EN);
+}
+
+static int pm8058_disable_ldo_locally_set_pull_down(struct regmap *regmap,
+		u16 ctrl_addr, u16 master_enable_addr, u8 master_enable_bit)
+{
+	int error;
+
+	/* Enable LDO in master control register. */
+	error = regmap_update_bits(regmap, master_enable_addr,
+			master_enable_bit, master_enable_bit);
+	if (error)
+		return error;
+
+	/* Disable LDO in CTRL register and set pull down */
+	return regmap_update_bits(regmap, ctrl_addr,
+		PM8058_REGULATOR_ENABLE_MASK | PM8058_REGULATOR_PULL_DOWN_MASK,
+		PM8058_REGULATOR_DISABLE | PM8058_REGULATOR_PULL_DOWN_EN);
+}
+
+static int pm8058_pwrkey_shutdown(struct pmic8xxx_pwrkey *pwrkey, bool reset)
+{
+	int error;
+	struct regmap *regmap = pwrkey->regmap;
+	u8 mask, val;
+
+	/* When shutting down, enable active pulldowns on important rails. */
+	if (!reset) {
+		/* Disable SMPS's 0,1,3 locally and set pulldown enable bits. */
+		pm8058_disable_smps_locally_set_pull_down(regmap,
+			PM8058_S0_CTRL, PM8058_S0_TEST2,
+			REG_PM8058_VREG_EN_MSM, BIT(7));
+		pm8058_disable_smps_locally_set_pull_down(regmap,
+			PM8058_S1_CTRL, PM8058_S1_TEST2,
+			REG_PM8058_VREG_EN_MSM, BIT(6));
+		pm8058_disable_smps_locally_set_pull_down(regmap,
+			PM8058_S3_CTRL, PM8058_S3_TEST2,
+			REG_PM8058_VREG_EN_GRP_5_4, BIT(7) | BIT(4));
+		/* Disable LDO 21 locally and set pulldown enable bit. */
+		pm8058_disable_ldo_locally_set_pull_down(regmap,
+			PM8058_L21_CTRL, REG_PM8058_VREG_EN_GRP_5_4,
+			BIT(1));
+	}
+
+	/*
+	 * Fix-up: Set regulator LDO22 to 1.225 V in high power mode. Leave its
+	 * pull-down state intact. This ensures a safe shutdown.
+	 */
+	error = regmap_update_bits(regmap, PM8058_L22_CTRL, 0xbf, 0x93);
+	if (error)
+		return error;
+
+	/* Enable SMPL if resetting is desired */
+	mask = SLEEP_CTRL_SMPL_EN_RESET;
+	val = 0;
+	if (reset)
+		val = mask;
+	return regmap_update_bits(regmap, PM8058_SLEEP_CTRL, mask, val);
+}
+
+static int pm8921_pwrkey_shutdown(struct pmic8xxx_pwrkey *pwrkey, bool reset)
+{
+	struct regmap *regmap = pwrkey->regmap;
+	u8 mask = SLEEP_CTRL_SMPL_EN_RESET;
+	u8 val = 0;
+
+	/* Enable SMPL if resetting is desired */
+	if (reset)
+		val = mask;
+	return regmap_update_bits(regmap, PM8921_SLEEP_CTRL, mask, val);
+}
+
+static int pmic8xxx_pwrkey_probe(struct platform_device *pdev)
+{
+	struct input_dev *pwr;
+	int key_release_irq = platform_get_irq(pdev, 0);
+	int key_press_irq = platform_get_irq(pdev, 1);
+	int err;
+	unsigned int delay;
+	unsigned int pon_cntl;
+	struct regmap *regmap;
+	struct pmic8xxx_pwrkey *pwrkey;
+	u32 kpd_delay;
+	bool pull_up;
+
+	if (of_property_read_u32(pdev->dev.of_node, "debounce", &kpd_delay))
+		kpd_delay = 15625;
+
+	/* Valid range of pwr key trigger delay is 1/64 sec to 2 seconds. */
+	if (kpd_delay > USEC_PER_SEC * 2 || kpd_delay < USEC_PER_SEC / 64) {
+		dev_err(&pdev->dev, "invalid power key trigger delay\n");
+		return -EINVAL;
+	}
+
+	pull_up = of_property_read_bool(pdev->dev.of_node, "pull-up");
+
+	regmap = dev_get_regmap(pdev->dev.parent, NULL);
+	if (!regmap) {
+		dev_err(&pdev->dev, "failed to locate regmap for the device\n");
+		return -ENODEV;
+	}
+
+	pwrkey = devm_kzalloc(&pdev->dev, sizeof(*pwrkey), GFP_KERNEL);
+	if (!pwrkey)
+		return -ENOMEM;
+
+	pwrkey->shutdown_fn = of_device_get_match_data(&pdev->dev);
+	pwrkey->regmap = regmap;
+	pwrkey->key_press_irq = key_press_irq;
+
+	pwr = devm_input_allocate_device(&pdev->dev);
+	if (!pwr) {
+		dev_dbg(&pdev->dev, "Can't allocate power button\n");
+		return -ENOMEM;
+	}
+
+	input_set_capability(pwr, EV_KEY, KEY_POWER);
+
+	pwr->name = "pmic8xxx_pwrkey";
+	pwr->phys = "pmic8xxx_pwrkey/input0";
+
+	delay = (kpd_delay << 6) / USEC_PER_SEC;
+	delay = ilog2(delay);
+
+	err = regmap_read(regmap, PON_CNTL_1, &pon_cntl);
+	if (err < 0) {
+		dev_err(&pdev->dev, "failed reading PON_CNTL_1 err=%d\n", err);
+		return err;
+	}
+
+	pon_cntl &= ~PON_CNTL_TRIG_DELAY_MASK;
+	pon_cntl |= (delay & PON_CNTL_TRIG_DELAY_MASK);
+	if (pull_up)
+		pon_cntl |= PON_CNTL_PULL_UP;
+	else
+		pon_cntl &= ~PON_CNTL_PULL_UP;
+
+	err = regmap_write(regmap, PON_CNTL_1, pon_cntl);
+	if (err < 0) {
+		dev_err(&pdev->dev, "failed writing PON_CNTL_1 err=%d\n", err);
+		return err;
+	}
+
+	err = devm_request_irq(&pdev->dev, key_press_irq, pwrkey_press_irq,
+			       IRQF_TRIGGER_RISING,
+			       "pmic8xxx_pwrkey_press", pwr);
+	if (err) {
+		dev_err(&pdev->dev, "Can't get %d IRQ for pwrkey: %d\n",
+			key_press_irq, err);
+		return err;
+	}
+
+	err = devm_request_irq(&pdev->dev, key_release_irq, pwrkey_release_irq,
+			       IRQF_TRIGGER_RISING,
+			       "pmic8xxx_pwrkey_release", pwr);
+	if (err) {
+		dev_err(&pdev->dev, "Can't get %d IRQ for pwrkey: %d\n",
+			key_release_irq, err);
+		return err;
+	}
+
+	err = input_register_device(pwr);
+	if (err) {
+		dev_err(&pdev->dev, "Can't register power key: %d\n", err);
+		return err;
+	}
+
+	platform_set_drvdata(pdev, pwrkey);
+	device_init_wakeup(&pdev->dev, 1);
+
+	return 0;
+}
+
+static const struct of_device_id pm8xxx_pwr_key_id_table[] = {
+	{ .compatible = "qcom,pm8058-pwrkey", .data = &pm8058_pwrkey_shutdown },
+	{ .compatible = "qcom,pm8921-pwrkey", .data = &pm8921_pwrkey_shutdown },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, pm8xxx_pwr_key_id_table);
+
+static struct platform_driver pmic8xxx_pwrkey_driver = {
+	.probe		= pmic8xxx_pwrkey_probe,
+	.shutdown	= pmic8xxx_pwrkey_shutdown,
+	.driver		= {
+		.name	= "pm8xxx-pwrkey",
+		.pm	= &pm8xxx_pwr_key_pm_ops,
+		.of_match_table = pm8xxx_pwr_key_id_table,
+	},
+};
+module_platform_driver(pmic8xxx_pwrkey_driver);
+
+MODULE_ALIAS("platform:pmic8xxx_pwrkey");
+MODULE_DESCRIPTION("PMIC8XXX Power Key driver");
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Trilok Soni <tsoni@codeaurora.org>");
diff --git a/drivers/input/misc/powermate.c b/drivers/input/misc/powermate.c
new file mode 100644
index 000000000..db2ba89ad
--- /dev/null
+++ b/drivers/input/misc/powermate.c
@@ -0,0 +1,457 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * A driver for the Griffin Technology, Inc. "PowerMate" USB controller dial.
+ *
+ * v1.1, (c)2002 William R Sowerbutts <will@sowerbutts.com>
+ *
+ * This device is a anodised aluminium knob which connects over USB. It can measure
+ * clockwise and anticlockwise rotation. The dial also acts as a pushbutton with
+ * a spring for automatic release. The base contains a pair of LEDs which illuminate
+ * the translucent base. It rotates without limit and reports its relative rotation
+ * back to the host when polled by the USB controller.
+ *
+ * Testing with the knob I have has shown that it measures approximately 94 "clicks"
+ * for one full rotation. Testing with my High Speed Rotation Actuator (ok, it was
+ * a variable speed cordless electric drill) has shown that the device can measure
+ * speeds of up to 7 clicks either clockwise or anticlockwise between pollings from
+ * the host. If it counts more than 7 clicks before it is polled, it will wrap back
+ * to zero and start counting again. This was at quite high speed, however, almost
+ * certainly faster than the human hand could turn it. Griffin say that it loses a
+ * pulse or two on a direction change; the granularity is so fine that I never
+ * noticed this in practice.
+ *
+ * The device's microcontroller can be programmed to set the LED to either a constant
+ * intensity, or to a rhythmic pulsing. Several patterns and speeds are available.
+ *
+ * Griffin were very happy to provide documentation and free hardware for development.
+ *
+ * Some userspace tools are available on the web: http://sowerbutts.com/powermate/
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/spinlock.h>
+#include <linux/usb/input.h>
+
+#define POWERMATE_VENDOR	0x077d	/* Griffin Technology, Inc. */
+#define POWERMATE_PRODUCT_NEW	0x0410	/* Griffin PowerMate */
+#define POWERMATE_PRODUCT_OLD	0x04AA	/* Griffin soundKnob */
+
+#define CONTOUR_VENDOR		0x05f3	/* Contour Design, Inc. */
+#define CONTOUR_JOG		0x0240	/* Jog and Shuttle */
+
+/* these are the command codes we send to the device */
+#define SET_STATIC_BRIGHTNESS  0x01
+#define SET_PULSE_ASLEEP       0x02
+#define SET_PULSE_AWAKE        0x03
+#define SET_PULSE_MODE         0x04
+
+/* these refer to bits in the powermate_device's requires_update field. */
+#define UPDATE_STATIC_BRIGHTNESS (1<<0)
+#define UPDATE_PULSE_ASLEEP      (1<<1)
+#define UPDATE_PULSE_AWAKE       (1<<2)
+#define UPDATE_PULSE_MODE        (1<<3)
+
+/* at least two versions of the hardware exist, with differing payload
+   sizes. the first three bytes always contain the "interesting" data in
+   the relevant format. */
+#define POWERMATE_PAYLOAD_SIZE_MAX 6
+#define POWERMATE_PAYLOAD_SIZE_MIN 3
+struct powermate_device {
+	signed char *data;
+	dma_addr_t data_dma;
+	struct urb *irq, *config;
+	struct usb_ctrlrequest *configcr;
+	struct usb_device *udev;
+	struct usb_interface *intf;
+	struct input_dev *input;
+	spinlock_t lock;
+	int static_brightness;
+	int pulse_speed;
+	int pulse_table;
+	int pulse_asleep;
+	int pulse_awake;
+	int requires_update; // physical settings which are out of sync
+	char phys[64];
+};
+
+static char pm_name_powermate[] = "Griffin PowerMate";
+static char pm_name_soundknob[] = "Griffin SoundKnob";
+
+static void powermate_config_complete(struct urb *urb);
+
+/* Callback for data arriving from the PowerMate over the USB interrupt pipe */
+static void powermate_irq(struct urb *urb)
+{
+	struct powermate_device *pm = urb->context;
+	struct device *dev = &pm->intf->dev;
+	int retval;
+
+	switch (urb->status) {
+	case 0:
+		/* success */
+		break;
+	case -ECONNRESET:
+	case -ENOENT:
+	case -ESHUTDOWN:
+		/* this urb is terminated, clean up */
+		dev_dbg(dev, "%s - urb shutting down with status: %d\n",
+			__func__, urb->status);
+		return;
+	default:
+		dev_dbg(dev, "%s - nonzero urb status received: %d\n",
+			__func__, urb->status);
+		goto exit;
+	}
+
+	/* handle updates to device state */
+	input_report_key(pm->input, BTN_0, pm->data[0] & 0x01);
+	input_report_rel(pm->input, REL_DIAL, pm->data[1]);
+	input_sync(pm->input);
+
+exit:
+	retval = usb_submit_urb (urb, GFP_ATOMIC);
+	if (retval)
+		dev_err(dev, "%s - usb_submit_urb failed with result: %d\n",
+			__func__, retval);
+}
+
+/* Decide if we need to issue a control message and do so. Must be called with pm->lock taken */
+static void powermate_sync_state(struct powermate_device *pm)
+{
+	if (pm->requires_update == 0)
+		return; /* no updates are required */
+	if (pm->config->status == -EINPROGRESS)
+		return; /* an update is already in progress; it'll issue this update when it completes */
+
+	if (pm->requires_update & UPDATE_PULSE_ASLEEP){
+		pm->configcr->wValue = cpu_to_le16( SET_PULSE_ASLEEP );
+		pm->configcr->wIndex = cpu_to_le16( pm->pulse_asleep ? 1 : 0 );
+		pm->requires_update &= ~UPDATE_PULSE_ASLEEP;
+	}else if (pm->requires_update & UPDATE_PULSE_AWAKE){
+		pm->configcr->wValue = cpu_to_le16( SET_PULSE_AWAKE );
+		pm->configcr->wIndex = cpu_to_le16( pm->pulse_awake ? 1 : 0 );
+		pm->requires_update &= ~UPDATE_PULSE_AWAKE;
+	}else if (pm->requires_update & UPDATE_PULSE_MODE){
+		int op, arg;
+		/* the powermate takes an operation and an argument for its pulse algorithm.
+		   the operation can be:
+		   0: divide the speed
+		   1: pulse at normal speed
+		   2: multiply the speed
+		   the argument only has an effect for operations 0 and 2, and ranges between
+		   1 (least effect) to 255 (maximum effect).
+
+		   thus, several states are equivalent and are coalesced into one state.
+
+		   we map this onto a range from 0 to 510, with:
+		   0 -- 254    -- use divide (0 = slowest)
+		   255         -- use normal speed
+		   256 -- 510  -- use multiple (510 = fastest).
+
+		   Only values of 'arg' quite close to 255 are particularly useful/spectacular.
+		*/
+		if (pm->pulse_speed < 255) {
+			op = 0;                   // divide
+			arg = 255 - pm->pulse_speed;
+		} else if (pm->pulse_speed > 255) {
+			op = 2;                   // multiply
+			arg = pm->pulse_speed - 255;
+		} else {
+			op = 1;                   // normal speed
+			arg = 0;                  // can be any value
+		}
+		pm->configcr->wValue = cpu_to_le16( (pm->pulse_table << 8) | SET_PULSE_MODE );
+		pm->configcr->wIndex = cpu_to_le16( (arg << 8) | op );
+		pm->requires_update &= ~UPDATE_PULSE_MODE;
+	} else if (pm->requires_update & UPDATE_STATIC_BRIGHTNESS) {
+		pm->configcr->wValue = cpu_to_le16( SET_STATIC_BRIGHTNESS );
+		pm->configcr->wIndex = cpu_to_le16( pm->static_brightness );
+		pm->requires_update &= ~UPDATE_STATIC_BRIGHTNESS;
+	} else {
+		printk(KERN_ERR "powermate: unknown update required");
+		pm->requires_update = 0; /* fudge the bug */
+		return;
+	}
+
+/*	printk("powermate: %04x %04x\n", pm->configcr->wValue, pm->configcr->wIndex); */
+
+	pm->configcr->bRequestType = 0x41; /* vendor request */
+	pm->configcr->bRequest = 0x01;
+	pm->configcr->wLength = 0;
+
+	usb_fill_control_urb(pm->config, pm->udev, usb_sndctrlpipe(pm->udev, 0),
+			     (void *) pm->configcr, NULL, 0,
+			     powermate_config_complete, pm);
+
+	if (usb_submit_urb(pm->config, GFP_ATOMIC))
+		printk(KERN_ERR "powermate: usb_submit_urb(config) failed");
+}
+
+/* Called when our asynchronous control message completes. We may need to issue another immediately */
+static void powermate_config_complete(struct urb *urb)
+{
+	struct powermate_device *pm = urb->context;
+	unsigned long flags;
+
+	if (urb->status)
+		printk(KERN_ERR "powermate: config urb returned %d\n", urb->status);
+
+	spin_lock_irqsave(&pm->lock, flags);
+	powermate_sync_state(pm);
+	spin_unlock_irqrestore(&pm->lock, flags);
+}
+
+/* Set the LED up as described and begin the sync with the hardware if required */
+static void powermate_pulse_led(struct powermate_device *pm, int static_brightness, int pulse_speed,
+				int pulse_table, int pulse_asleep, int pulse_awake)
+{
+	unsigned long flags;
+
+	if (pulse_speed < 0)
+		pulse_speed = 0;
+	if (pulse_table < 0)
+		pulse_table = 0;
+	if (pulse_speed > 510)
+		pulse_speed = 510;
+	if (pulse_table > 2)
+		pulse_table = 2;
+
+	pulse_asleep = !!pulse_asleep;
+	pulse_awake = !!pulse_awake;
+
+
+	spin_lock_irqsave(&pm->lock, flags);
+
+	/* mark state updates which are required */
+	if (static_brightness != pm->static_brightness) {
+		pm->static_brightness = static_brightness;
+		pm->requires_update |= UPDATE_STATIC_BRIGHTNESS;
+	}
+	if (pulse_asleep != pm->pulse_asleep) {
+		pm->pulse_asleep = pulse_asleep;
+		pm->requires_update |= (UPDATE_PULSE_ASLEEP | UPDATE_STATIC_BRIGHTNESS);
+	}
+	if (pulse_awake != pm->pulse_awake) {
+		pm->pulse_awake = pulse_awake;
+		pm->requires_update |= (UPDATE_PULSE_AWAKE | UPDATE_STATIC_BRIGHTNESS);
+	}
+	if (pulse_speed != pm->pulse_speed || pulse_table != pm->pulse_table) {
+		pm->pulse_speed = pulse_speed;
+		pm->pulse_table = pulse_table;
+		pm->requires_update |= UPDATE_PULSE_MODE;
+	}
+
+	powermate_sync_state(pm);
+
+	spin_unlock_irqrestore(&pm->lock, flags);
+}
+
+/* Callback from the Input layer when an event arrives from userspace to configure the LED */
+static int powermate_input_event(struct input_dev *dev, unsigned int type, unsigned int code, int _value)
+{
+	unsigned int command = (unsigned int)_value;
+	struct powermate_device *pm = input_get_drvdata(dev);
+
+	if (type == EV_MSC && code == MSC_PULSELED){
+		/*
+		    bits  0- 7: 8 bits: LED brightness
+		    bits  8-16: 9 bits: pulsing speed modifier (0 ... 510); 0-254 = slower, 255 = standard, 256-510 = faster.
+		    bits 17-18: 2 bits: pulse table (0, 1, 2 valid)
+		    bit     19: 1 bit : pulse whilst asleep?
+		    bit     20: 1 bit : pulse constantly?
+		*/
+		int static_brightness = command & 0xFF;   // bits 0-7
+		int pulse_speed = (command >> 8) & 0x1FF; // bits 8-16
+		int pulse_table = (command >> 17) & 0x3;  // bits 17-18
+		int pulse_asleep = (command >> 19) & 0x1; // bit 19
+		int pulse_awake  = (command >> 20) & 0x1; // bit 20
+
+		powermate_pulse_led(pm, static_brightness, pulse_speed, pulse_table, pulse_asleep, pulse_awake);
+	}
+
+	return 0;
+}
+
+static int powermate_alloc_buffers(struct usb_device *udev, struct powermate_device *pm)
+{
+	pm->data = usb_alloc_coherent(udev, POWERMATE_PAYLOAD_SIZE_MAX,
+				      GFP_KERNEL, &pm->data_dma);
+	if (!pm->data)
+		return -1;
+
+	pm->configcr = kmalloc(sizeof(*(pm->configcr)), GFP_KERNEL);
+	if (!pm->configcr)
+		return -ENOMEM;
+
+	return 0;
+}
+
+static void powermate_free_buffers(struct usb_device *udev, struct powermate_device *pm)
+{
+	usb_free_coherent(udev, POWERMATE_PAYLOAD_SIZE_MAX,
+			  pm->data, pm->data_dma);
+	kfree(pm->configcr);
+}
+
+/* Called whenever a USB device matching one in our supported devices table is connected */
+static int powermate_probe(struct usb_interface *intf, const struct usb_device_id *id)
+{
+	struct usb_device *udev = interface_to_usbdev (intf);
+	struct usb_host_interface *interface;
+	struct usb_endpoint_descriptor *endpoint;
+	struct powermate_device *pm;
+	struct input_dev *input_dev;
+	int pipe, maxp;
+	int error = -ENOMEM;
+
+	interface = intf->cur_altsetting;
+	if (interface->desc.bNumEndpoints < 1)
+		return -EINVAL;
+
+	endpoint = &interface->endpoint[0].desc;
+	if (!usb_endpoint_is_int_in(endpoint))
+		return -EIO;
+
+	usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
+		0x0a, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
+		0, interface->desc.bInterfaceNumber, NULL, 0,
+		USB_CTRL_SET_TIMEOUT);
+
+	pm = kzalloc(sizeof(struct powermate_device), GFP_KERNEL);
+	input_dev = input_allocate_device();
+	if (!pm || !input_dev)
+		goto fail1;
+
+	if (powermate_alloc_buffers(udev, pm))
+		goto fail2;
+
+	pm->irq = usb_alloc_urb(0, GFP_KERNEL);
+	if (!pm->irq)
+		goto fail2;
+
+	pm->config = usb_alloc_urb(0, GFP_KERNEL);
+	if (!pm->config)
+		goto fail3;
+
+	pm->udev = udev;
+	pm->intf = intf;
+	pm->input = input_dev;
+
+	usb_make_path(udev, pm->phys, sizeof(pm->phys));
+	strlcat(pm->phys, "/input0", sizeof(pm->phys));
+
+	spin_lock_init(&pm->lock);
+
+	switch (le16_to_cpu(udev->descriptor.idProduct)) {
+	case POWERMATE_PRODUCT_NEW:
+		input_dev->name = pm_name_powermate;
+		break;
+	case POWERMATE_PRODUCT_OLD:
+		input_dev->name = pm_name_soundknob;
+		break;
+	default:
+		input_dev->name = pm_name_soundknob;
+		printk(KERN_WARNING "powermate: unknown product id %04x\n",
+		       le16_to_cpu(udev->descriptor.idProduct));
+	}
+
+	input_dev->phys = pm->phys;
+	usb_to_input_id(udev, &input_dev->id);
+	input_dev->dev.parent = &intf->dev;
+
+	input_set_drvdata(input_dev, pm);
+
+	input_dev->event = powermate_input_event;
+
+	input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL) |
+		BIT_MASK(EV_MSC);
+	input_dev->keybit[BIT_WORD(BTN_0)] = BIT_MASK(BTN_0);
+	input_dev->relbit[BIT_WORD(REL_DIAL)] = BIT_MASK(REL_DIAL);
+	input_dev->mscbit[BIT_WORD(MSC_PULSELED)] = BIT_MASK(MSC_PULSELED);
+
+	/* get a handle to the interrupt data pipe */
+	pipe = usb_rcvintpipe(udev, endpoint->bEndpointAddress);
+	maxp = usb_maxpacket(udev, pipe);
+
+	if (maxp < POWERMATE_PAYLOAD_SIZE_MIN || maxp > POWERMATE_PAYLOAD_SIZE_MAX) {
+		printk(KERN_WARNING "powermate: Expected payload of %d--%d bytes, found %d bytes!\n",
+			POWERMATE_PAYLOAD_SIZE_MIN, POWERMATE_PAYLOAD_SIZE_MAX, maxp);
+		maxp = POWERMATE_PAYLOAD_SIZE_MAX;
+	}
+
+	usb_fill_int_urb(pm->irq, udev, pipe, pm->data,
+			 maxp, powermate_irq,
+			 pm, endpoint->bInterval);
+	pm->irq->transfer_dma = pm->data_dma;
+	pm->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+
+	/* register our interrupt URB with the USB system */
+	if (usb_submit_urb(pm->irq, GFP_KERNEL)) {
+		error = -EIO;
+		goto fail4;
+	}
+
+	error = input_register_device(pm->input);
+	if (error)
+		goto fail5;
+
+
+	/* force an update of everything */
+	pm->requires_update = UPDATE_PULSE_ASLEEP | UPDATE_PULSE_AWAKE | UPDATE_PULSE_MODE | UPDATE_STATIC_BRIGHTNESS;
+	powermate_pulse_led(pm, 0x80, 255, 0, 1, 0); // set default pulse parameters
+
+	usb_set_intfdata(intf, pm);
+	return 0;
+
+ fail5:	usb_kill_urb(pm->irq);
+ fail4:	usb_free_urb(pm->config);
+ fail3:	usb_free_urb(pm->irq);
+ fail2:	powermate_free_buffers(udev, pm);
+ fail1:	input_free_device(input_dev);
+	kfree(pm);
+	return error;
+}
+
+/* Called when a USB device we've accepted ownership of is removed */
+static void powermate_disconnect(struct usb_interface *intf)
+{
+	struct powermate_device *pm = usb_get_intfdata (intf);
+
+	usb_set_intfdata(intf, NULL);
+	if (pm) {
+		pm->requires_update = 0;
+		usb_kill_urb(pm->irq);
+		input_unregister_device(pm->input);
+		usb_kill_urb(pm->config);
+		usb_free_urb(pm->irq);
+		usb_free_urb(pm->config);
+		powermate_free_buffers(interface_to_usbdev(intf), pm);
+
+		kfree(pm);
+	}
+}
+
+static const struct usb_device_id powermate_devices[] = {
+	{ USB_DEVICE(POWERMATE_VENDOR, POWERMATE_PRODUCT_NEW) },
+	{ USB_DEVICE(POWERMATE_VENDOR, POWERMATE_PRODUCT_OLD) },
+	{ USB_DEVICE(CONTOUR_VENDOR, CONTOUR_JOG) },
+	{ } /* Terminating entry */
+};
+
+MODULE_DEVICE_TABLE (usb, powermate_devices);
+
+static struct usb_driver powermate_driver = {
+        .name =         "powermate",
+        .probe =        powermate_probe,
+        .disconnect =   powermate_disconnect,
+        .id_table =     powermate_devices,
+};
+
+module_usb_driver(powermate_driver);
+
+MODULE_AUTHOR( "William R Sowerbutts" );
+MODULE_DESCRIPTION( "Griffin Technology, Inc PowerMate driver" );
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/misc/pwm-beeper.c b/drivers/input/misc/pwm-beeper.c
new file mode 100644
index 000000000..d6b124777
--- /dev/null
+++ b/drivers/input/misc/pwm-beeper.c
@@ -0,0 +1,262 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *  Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de>
+ *  PWM beeper driver
+ */
+
+#include <linux/input.h>
+#include <linux/regulator/consumer.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/property.h>
+#include <linux/pwm.h>
+#include <linux/slab.h>
+#include <linux/workqueue.h>
+
+struct pwm_beeper {
+	struct input_dev *input;
+	struct pwm_device *pwm;
+	struct regulator *amplifier;
+	struct work_struct work;
+	unsigned long period;
+	unsigned int bell_frequency;
+	bool suspended;
+	bool amplifier_on;
+};
+
+#define HZ_TO_NANOSECONDS(x) (1000000000UL/(x))
+
+static int pwm_beeper_on(struct pwm_beeper *beeper, unsigned long period)
+{
+	struct pwm_state state;
+	int error;
+
+	pwm_get_state(beeper->pwm, &state);
+
+	state.enabled = true;
+	state.period = period;
+	pwm_set_relative_duty_cycle(&state, 50, 100);
+
+	error = pwm_apply_state(beeper->pwm, &state);
+	if (error)
+		return error;
+
+	if (!beeper->amplifier_on) {
+		error = regulator_enable(beeper->amplifier);
+		if (error) {
+			pwm_disable(beeper->pwm);
+			return error;
+		}
+
+		beeper->amplifier_on = true;
+	}
+
+	return 0;
+}
+
+static void pwm_beeper_off(struct pwm_beeper *beeper)
+{
+	if (beeper->amplifier_on) {
+		regulator_disable(beeper->amplifier);
+		beeper->amplifier_on = false;
+	}
+
+	pwm_disable(beeper->pwm);
+}
+
+static void pwm_beeper_work(struct work_struct *work)
+{
+	struct pwm_beeper *beeper = container_of(work, struct pwm_beeper, work);
+	unsigned long period = READ_ONCE(beeper->period);
+
+	if (period)
+		pwm_beeper_on(beeper, period);
+	else
+		pwm_beeper_off(beeper);
+}
+
+static int pwm_beeper_event(struct input_dev *input,
+			    unsigned int type, unsigned int code, int value)
+{
+	struct pwm_beeper *beeper = input_get_drvdata(input);
+
+	if (type != EV_SND || value < 0)
+		return -EINVAL;
+
+	switch (code) {
+	case SND_BELL:
+		value = value ? beeper->bell_frequency : 0;
+		break;
+	case SND_TONE:
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	if (value == 0)
+		beeper->period = 0;
+	else
+		beeper->period = HZ_TO_NANOSECONDS(value);
+
+	if (!beeper->suspended)
+		schedule_work(&beeper->work);
+
+	return 0;
+}
+
+static void pwm_beeper_stop(struct pwm_beeper *beeper)
+{
+	cancel_work_sync(&beeper->work);
+	pwm_beeper_off(beeper);
+}
+
+static void pwm_beeper_close(struct input_dev *input)
+{
+	struct pwm_beeper *beeper = input_get_drvdata(input);
+
+	pwm_beeper_stop(beeper);
+}
+
+static int pwm_beeper_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct pwm_beeper *beeper;
+	struct pwm_state state;
+	u32 bell_frequency;
+	int error;
+
+	beeper = devm_kzalloc(dev, sizeof(*beeper), GFP_KERNEL);
+	if (!beeper)
+		return -ENOMEM;
+
+	beeper->pwm = devm_pwm_get(dev, NULL);
+	if (IS_ERR(beeper->pwm)) {
+		error = PTR_ERR(beeper->pwm);
+		if (error != -EPROBE_DEFER)
+			dev_err(dev, "Failed to request PWM device: %d\n",
+				error);
+		return error;
+	}
+
+	/* Sync up PWM state and ensure it is off. */
+	pwm_init_state(beeper->pwm, &state);
+	state.enabled = false;
+	error = pwm_apply_state(beeper->pwm, &state);
+	if (error) {
+		dev_err(dev, "failed to apply initial PWM state: %d\n",
+			error);
+		return error;
+	}
+
+	beeper->amplifier = devm_regulator_get(dev, "amp");
+	if (IS_ERR(beeper->amplifier)) {
+		error = PTR_ERR(beeper->amplifier);
+		if (error != -EPROBE_DEFER)
+			dev_err(dev, "Failed to get 'amp' regulator: %d\n",
+				error);
+		return error;
+	}
+
+	INIT_WORK(&beeper->work, pwm_beeper_work);
+
+	error = device_property_read_u32(dev, "beeper-hz", &bell_frequency);
+	if (error) {
+		bell_frequency = 1000;
+		dev_dbg(dev,
+			"failed to parse 'beeper-hz' property, using default: %uHz\n",
+			bell_frequency);
+	}
+
+	beeper->bell_frequency = bell_frequency;
+
+	beeper->input = devm_input_allocate_device(dev);
+	if (!beeper->input) {
+		dev_err(dev, "Failed to allocate input device\n");
+		return -ENOMEM;
+	}
+
+	beeper->input->name = "pwm-beeper";
+	beeper->input->phys = "pwm/input0";
+	beeper->input->id.bustype = BUS_HOST;
+	beeper->input->id.vendor = 0x001f;
+	beeper->input->id.product = 0x0001;
+	beeper->input->id.version = 0x0100;
+
+	input_set_capability(beeper->input, EV_SND, SND_TONE);
+	input_set_capability(beeper->input, EV_SND, SND_BELL);
+
+	beeper->input->event = pwm_beeper_event;
+	beeper->input->close = pwm_beeper_close;
+
+	input_set_drvdata(beeper->input, beeper);
+
+	error = input_register_device(beeper->input);
+	if (error) {
+		dev_err(dev, "Failed to register input device: %d\n", error);
+		return error;
+	}
+
+	platform_set_drvdata(pdev, beeper);
+
+	return 0;
+}
+
+static int __maybe_unused pwm_beeper_suspend(struct device *dev)
+{
+	struct pwm_beeper *beeper = dev_get_drvdata(dev);
+
+	/*
+	 * Spinlock is taken here is not to protect write to
+	 * beeper->suspended, but to ensure that pwm_beeper_event
+	 * does not re-submit work once flag is set.
+	 */
+	spin_lock_irq(&beeper->input->event_lock);
+	beeper->suspended = true;
+	spin_unlock_irq(&beeper->input->event_lock);
+
+	pwm_beeper_stop(beeper);
+
+	return 0;
+}
+
+static int __maybe_unused pwm_beeper_resume(struct device *dev)
+{
+	struct pwm_beeper *beeper = dev_get_drvdata(dev);
+
+	spin_lock_irq(&beeper->input->event_lock);
+	beeper->suspended = false;
+	spin_unlock_irq(&beeper->input->event_lock);
+
+	/* Let worker figure out if we should resume beeping */
+	schedule_work(&beeper->work);
+
+	return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(pwm_beeper_pm_ops,
+			 pwm_beeper_suspend, pwm_beeper_resume);
+
+#ifdef CONFIG_OF
+static const struct of_device_id pwm_beeper_match[] = {
+	{ .compatible = "pwm-beeper", },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, pwm_beeper_match);
+#endif
+
+static struct platform_driver pwm_beeper_driver = {
+	.probe	= pwm_beeper_probe,
+	.driver = {
+		.name	= "pwm-beeper",
+		.pm	= &pwm_beeper_pm_ops,
+		.of_match_table = of_match_ptr(pwm_beeper_match),
+	},
+};
+module_platform_driver(pwm_beeper_driver);
+
+MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
+MODULE_DESCRIPTION("PWM beeper driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:pwm-beeper");
diff --git a/drivers/input/misc/pwm-vibra.c b/drivers/input/misc/pwm-vibra.c
new file mode 100644
index 000000000..81e777a04
--- /dev/null
+++ b/drivers/input/misc/pwm-vibra.c
@@ -0,0 +1,270 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *  PWM vibrator driver
+ *
+ *  Copyright (C) 2017 Collabora Ltd.
+ *
+ *  Based on previous work from:
+ *  Copyright (C) 2012 Dmitry Torokhov <dmitry.torokhov@gmail.com>
+ *
+ *  Based on PWM beeper driver:
+ *  Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de>
+ */
+
+#include <linux/input.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/property.h>
+#include <linux/pwm.h>
+#include <linux/regulator/consumer.h>
+#include <linux/slab.h>
+
+struct pwm_vibrator {
+	struct input_dev *input;
+	struct pwm_device *pwm;
+	struct pwm_device *pwm_dir;
+	struct regulator *vcc;
+
+	struct work_struct play_work;
+	u16 level;
+	u32 direction_duty_cycle;
+	bool vcc_on;
+};
+
+static int pwm_vibrator_start(struct pwm_vibrator *vibrator)
+{
+	struct device *pdev = vibrator->input->dev.parent;
+	struct pwm_state state;
+	int err;
+
+	if (!vibrator->vcc_on) {
+		err = regulator_enable(vibrator->vcc);
+		if (err) {
+			dev_err(pdev, "failed to enable regulator: %d", err);
+			return err;
+		}
+		vibrator->vcc_on = true;
+	}
+
+	pwm_get_state(vibrator->pwm, &state);
+	pwm_set_relative_duty_cycle(&state, vibrator->level, 0xffff);
+	state.enabled = true;
+
+	err = pwm_apply_state(vibrator->pwm, &state);
+	if (err) {
+		dev_err(pdev, "failed to apply pwm state: %d", err);
+		return err;
+	}
+
+	if (vibrator->pwm_dir) {
+		pwm_get_state(vibrator->pwm_dir, &state);
+		state.duty_cycle = vibrator->direction_duty_cycle;
+		state.enabled = true;
+
+		err = pwm_apply_state(vibrator->pwm_dir, &state);
+		if (err) {
+			dev_err(pdev, "failed to apply dir-pwm state: %d", err);
+			pwm_disable(vibrator->pwm);
+			return err;
+		}
+	}
+
+	return 0;
+}
+
+static void pwm_vibrator_stop(struct pwm_vibrator *vibrator)
+{
+	if (vibrator->pwm_dir)
+		pwm_disable(vibrator->pwm_dir);
+	pwm_disable(vibrator->pwm);
+
+	if (vibrator->vcc_on) {
+		regulator_disable(vibrator->vcc);
+		vibrator->vcc_on = false;
+	}
+}
+
+static void pwm_vibrator_play_work(struct work_struct *work)
+{
+	struct pwm_vibrator *vibrator = container_of(work,
+					struct pwm_vibrator, play_work);
+
+	if (vibrator->level)
+		pwm_vibrator_start(vibrator);
+	else
+		pwm_vibrator_stop(vibrator);
+}
+
+static int pwm_vibrator_play_effect(struct input_dev *dev, void *data,
+				    struct ff_effect *effect)
+{
+	struct pwm_vibrator *vibrator = input_get_drvdata(dev);
+
+	vibrator->level = effect->u.rumble.strong_magnitude;
+	if (!vibrator->level)
+		vibrator->level = effect->u.rumble.weak_magnitude;
+
+	schedule_work(&vibrator->play_work);
+
+	return 0;
+}
+
+static void pwm_vibrator_close(struct input_dev *input)
+{
+	struct pwm_vibrator *vibrator = input_get_drvdata(input);
+
+	cancel_work_sync(&vibrator->play_work);
+	pwm_vibrator_stop(vibrator);
+}
+
+static int pwm_vibrator_probe(struct platform_device *pdev)
+{
+	struct pwm_vibrator *vibrator;
+	struct pwm_state state;
+	int err;
+
+	vibrator = devm_kzalloc(&pdev->dev, sizeof(*vibrator), GFP_KERNEL);
+	if (!vibrator)
+		return -ENOMEM;
+
+	vibrator->input = devm_input_allocate_device(&pdev->dev);
+	if (!vibrator->input)
+		return -ENOMEM;
+
+	vibrator->vcc = devm_regulator_get(&pdev->dev, "vcc");
+	err = PTR_ERR_OR_ZERO(vibrator->vcc);
+	if (err) {
+		if (err != -EPROBE_DEFER)
+			dev_err(&pdev->dev, "Failed to request regulator: %d",
+				err);
+		return err;
+	}
+
+	vibrator->pwm = devm_pwm_get(&pdev->dev, "enable");
+	err = PTR_ERR_OR_ZERO(vibrator->pwm);
+	if (err) {
+		if (err != -EPROBE_DEFER)
+			dev_err(&pdev->dev, "Failed to request main pwm: %d",
+				err);
+		return err;
+	}
+
+	INIT_WORK(&vibrator->play_work, pwm_vibrator_play_work);
+
+	/* Sync up PWM state and ensure it is off. */
+	pwm_init_state(vibrator->pwm, &state);
+	state.enabled = false;
+	err = pwm_apply_state(vibrator->pwm, &state);
+	if (err) {
+		dev_err(&pdev->dev, "failed to apply initial PWM state: %d",
+			err);
+		return err;
+	}
+
+	vibrator->pwm_dir = devm_pwm_get(&pdev->dev, "direction");
+	err = PTR_ERR_OR_ZERO(vibrator->pwm_dir);
+	switch (err) {
+	case 0:
+		/* Sync up PWM state and ensure it is off. */
+		pwm_init_state(vibrator->pwm_dir, &state);
+		state.enabled = false;
+		err = pwm_apply_state(vibrator->pwm_dir, &state);
+		if (err) {
+			dev_err(&pdev->dev, "failed to apply initial PWM state: %d",
+				err);
+			return err;
+		}
+
+		vibrator->direction_duty_cycle =
+			pwm_get_period(vibrator->pwm_dir) / 2;
+		device_property_read_u32(&pdev->dev, "direction-duty-cycle-ns",
+					 &vibrator->direction_duty_cycle);
+		break;
+
+	case -ENODATA:
+		/* Direction PWM is optional */
+		vibrator->pwm_dir = NULL;
+		break;
+
+	default:
+		dev_err(&pdev->dev, "Failed to request direction pwm: %d", err);
+		fallthrough;
+
+	case -EPROBE_DEFER:
+		return err;
+	}
+
+	vibrator->input->name = "pwm-vibrator";
+	vibrator->input->id.bustype = BUS_HOST;
+	vibrator->input->dev.parent = &pdev->dev;
+	vibrator->input->close = pwm_vibrator_close;
+
+	input_set_drvdata(vibrator->input, vibrator);
+	input_set_capability(vibrator->input, EV_FF, FF_RUMBLE);
+
+	err = input_ff_create_memless(vibrator->input, NULL,
+				      pwm_vibrator_play_effect);
+	if (err) {
+		dev_err(&pdev->dev, "Couldn't create FF dev: %d", err);
+		return err;
+	}
+
+	err = input_register_device(vibrator->input);
+	if (err) {
+		dev_err(&pdev->dev, "Couldn't register input dev: %d", err);
+		return err;
+	}
+
+	platform_set_drvdata(pdev, vibrator);
+
+	return 0;
+}
+
+static int __maybe_unused pwm_vibrator_suspend(struct device *dev)
+{
+	struct pwm_vibrator *vibrator = dev_get_drvdata(dev);
+
+	cancel_work_sync(&vibrator->play_work);
+	if (vibrator->level)
+		pwm_vibrator_stop(vibrator);
+
+	return 0;
+}
+
+static int __maybe_unused pwm_vibrator_resume(struct device *dev)
+{
+	struct pwm_vibrator *vibrator = dev_get_drvdata(dev);
+
+	if (vibrator->level)
+		pwm_vibrator_start(vibrator);
+
+	return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(pwm_vibrator_pm_ops,
+			 pwm_vibrator_suspend, pwm_vibrator_resume);
+
+#ifdef CONFIG_OF
+static const struct of_device_id pwm_vibra_dt_match_table[] = {
+	{ .compatible = "pwm-vibrator" },
+	{},
+};
+MODULE_DEVICE_TABLE(of, pwm_vibra_dt_match_table);
+#endif
+
+static struct platform_driver pwm_vibrator_driver = {
+	.probe	= pwm_vibrator_probe,
+	.driver	= {
+		.name	= "pwm-vibrator",
+		.pm	= &pwm_vibrator_pm_ops,
+		.of_match_table = of_match_ptr(pwm_vibra_dt_match_table),
+	},
+};
+module_platform_driver(pwm_vibrator_driver);
+
+MODULE_AUTHOR("Sebastian Reichel <sre@kernel.org>");
+MODULE_DESCRIPTION("PWM vibrator driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:pwm-vibrator");
diff --git a/drivers/input/misc/rave-sp-pwrbutton.c b/drivers/input/misc/rave-sp-pwrbutton.c
new file mode 100644
index 000000000..bcab3cdb7
--- /dev/null
+++ b/drivers/input/misc/rave-sp-pwrbutton.c
@@ -0,0 +1,94 @@
+// SPDX-License-Identifier: GPL-2.0+
+//
+// Power Button driver for RAVE SP
+//
+// Copyright (C) 2017 Zodiac Inflight Innovations
+//
+//
+
+#include <linux/input.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mfd/rave-sp.h>
+#include <linux/platform_device.h>
+
+#define RAVE_SP_EVNT_BUTTON_PRESS	(RAVE_SP_EVNT_BASE + 0x00)
+
+struct rave_sp_power_button {
+	struct input_dev *idev;
+	struct notifier_block nb;
+};
+
+static int rave_sp_power_button_event(struct notifier_block *nb,
+				      unsigned long action, void *data)
+{
+	struct rave_sp_power_button *pb =
+		container_of(nb, struct rave_sp_power_button, nb);
+	const u8 event = rave_sp_action_unpack_event(action);
+	const u8 value = rave_sp_action_unpack_value(action);
+	struct input_dev *idev = pb->idev;
+
+	if (event == RAVE_SP_EVNT_BUTTON_PRESS) {
+		input_report_key(idev, KEY_POWER, value);
+		input_sync(idev);
+
+		return NOTIFY_STOP;
+	}
+
+	return NOTIFY_DONE;
+}
+
+static int rave_sp_pwrbutton_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct rave_sp_power_button *pb;
+	struct input_dev *idev;
+	int error;
+
+	pb = devm_kzalloc(dev, sizeof(*pb), GFP_KERNEL);
+	if (!pb)
+		return -ENOMEM;
+
+	idev = devm_input_allocate_device(dev);
+	if (!idev)
+		return -ENOMEM;
+
+	idev->name = pdev->name;
+
+	input_set_capability(idev, EV_KEY, KEY_POWER);
+
+	error = input_register_device(idev);
+	if (error)
+		return error;
+
+	pb->idev = idev;
+	pb->nb.notifier_call = rave_sp_power_button_event;
+	pb->nb.priority = 128;
+
+	error = devm_rave_sp_register_event_notifier(dev, &pb->nb);
+	if (error)
+		return error;
+
+	return 0;
+}
+
+static const struct of_device_id rave_sp_pwrbutton_of_match[] = {
+	{ .compatible = "zii,rave-sp-pwrbutton" },
+	{}
+};
+
+static struct platform_driver rave_sp_pwrbutton_driver = {
+	.probe = rave_sp_pwrbutton_probe,
+	.driver	= {
+		.name = KBUILD_MODNAME,
+		.of_match_table = rave_sp_pwrbutton_of_match,
+	},
+};
+module_platform_driver(rave_sp_pwrbutton_driver);
+
+MODULE_DEVICE_TABLE(of, rave_sp_pwrbutton_of_match);
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Andrey Vostrikov <andrey.vostrikov@cogentembedded.com>");
+MODULE_AUTHOR("Nikita Yushchenko <nikita.yoush@cogentembedded.com>");
+MODULE_AUTHOR("Andrey Smirnov <andrew.smirnov@gmail.com>");
+MODULE_DESCRIPTION("RAVE SP Power Button driver");
diff --git a/drivers/input/misc/rb532_button.c b/drivers/input/misc/rb532_button.c
new file mode 100644
index 000000000..190a80e1e
--- /dev/null
+++ b/drivers/input/misc/rb532_button.c
@@ -0,0 +1,94 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Support for the S1 button on Routerboard 532
+ *
+ * Copyright (C) 2009  Phil Sutter <n0-1@freewrt.org>
+ */
+
+#include <linux/input.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/gpio.h>
+
+#include <asm/mach-rc32434/gpio.h>
+#include <asm/mach-rc32434/rb.h>
+
+#define DRV_NAME "rb532-button"
+
+#define RB532_BTN_RATE 100 /* msec */
+#define RB532_BTN_KSYM BTN_0
+
+/* The S1 button state is provided by GPIO pin 1. But as this
+ * pin is also used for uart input as alternate function, the
+ * operational modes must be switched first:
+ * 1) disable uart using set_latch_u5()
+ * 2) turn off alternate function implicitly through
+ *    gpio_direction_input()
+ * 3) read the GPIO's current value
+ * 4) undo step 2 by enabling alternate function (in this
+ *    mode the GPIO direction is fixed, so no change needed)
+ * 5) turn on uart again
+ * The GPIO value occurs to be inverted, so pin high means
+ * button is not pressed.
+ */
+static bool rb532_button_pressed(void)
+{
+	int val;
+
+	set_latch_u5(0, LO_FOFF);
+	gpio_direction_input(GPIO_BTN_S1);
+
+	val = gpio_get_value(GPIO_BTN_S1);
+
+	rb532_gpio_set_func(GPIO_BTN_S1);
+	set_latch_u5(LO_FOFF, 0);
+
+	return !val;
+}
+
+static void rb532_button_poll(struct input_dev *input)
+{
+	input_report_key(input, RB532_BTN_KSYM, rb532_button_pressed());
+	input_sync(input);
+}
+
+static int rb532_button_probe(struct platform_device *pdev)
+{
+	struct input_dev *input;
+	int error;
+
+	input = devm_input_allocate_device(&pdev->dev);
+	if (!input)
+		return -ENOMEM;
+
+	input->name = "rb532 button";
+	input->phys = "rb532/button0";
+	input->id.bustype = BUS_HOST;
+
+	input_set_capability(input, EV_KEY, RB532_BTN_KSYM);
+
+	error = input_setup_polling(input, rb532_button_poll);
+	if (error)
+		return error;
+
+	input_set_poll_interval(input, RB532_BTN_RATE);
+
+	error = input_register_device(input);
+	if (error)
+		return error;
+
+	return 0;
+}
+
+static struct platform_driver rb532_button_driver = {
+	.probe = rb532_button_probe,
+	.driver = {
+		.name = DRV_NAME,
+	},
+};
+module_platform_driver(rb532_button_driver);
+
+MODULE_AUTHOR("Phil Sutter <n0-1@freewrt.org>");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Support for S1 button on Routerboard 532");
+MODULE_ALIAS("platform:" DRV_NAME);
diff --git a/drivers/input/misc/regulator-haptic.c b/drivers/input/misc/regulator-haptic.c
new file mode 100644
index 000000000..a661e7754
--- /dev/null
+++ b/drivers/input/misc/regulator-haptic.c
@@ -0,0 +1,264 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Regulator haptic driver
+ *
+ * Copyright (c) 2014 Samsung Electronics Co., Ltd.
+ * Author: Jaewon Kim <jaewon02.kim@samsung.com>
+ * Author: Hyunhee Kim <hyunhee.kim@samsung.com>
+ */
+
+#include <linux/input.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_data/regulator-haptic.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/consumer.h>
+#include <linux/slab.h>
+
+#define MAX_MAGNITUDE_SHIFT	16
+
+struct regulator_haptic {
+	struct device *dev;
+	struct input_dev *input_dev;
+	struct regulator *regulator;
+
+	struct work_struct work;
+	struct mutex mutex;
+
+	bool active;
+	bool suspended;
+
+	unsigned int max_volt;
+	unsigned int min_volt;
+	unsigned int magnitude;
+};
+
+static int regulator_haptic_toggle(struct regulator_haptic *haptic, bool on)
+{
+	int error;
+
+	if (haptic->active != on) {
+
+		error = on ? regulator_enable(haptic->regulator) :
+			     regulator_disable(haptic->regulator);
+		if (error) {
+			dev_err(haptic->dev,
+				"failed to switch regulator %s: %d\n",
+				on ? "on" : "off", error);
+			return error;
+		}
+
+		haptic->active = on;
+	}
+
+	return 0;
+}
+
+static int regulator_haptic_set_voltage(struct regulator_haptic *haptic,
+					 unsigned int magnitude)
+{
+	u64 volt_mag_multi;
+	unsigned int intensity;
+	int error;
+
+	volt_mag_multi = (u64)(haptic->max_volt - haptic->min_volt) * magnitude;
+	intensity = (unsigned int)(volt_mag_multi >> MAX_MAGNITUDE_SHIFT);
+
+	error = regulator_set_voltage(haptic->regulator,
+				      intensity + haptic->min_volt,
+				      haptic->max_volt);
+	if (error) {
+		dev_err(haptic->dev, "cannot set regulator voltage to %d: %d\n",
+			intensity + haptic->min_volt, error);
+		return error;
+	}
+
+	regulator_haptic_toggle(haptic, !!magnitude);
+
+	return 0;
+}
+
+static void regulator_haptic_work(struct work_struct *work)
+{
+	struct regulator_haptic *haptic = container_of(work,
+					struct regulator_haptic, work);
+
+	mutex_lock(&haptic->mutex);
+
+	if (!haptic->suspended)
+		regulator_haptic_set_voltage(haptic, haptic->magnitude);
+
+	mutex_unlock(&haptic->mutex);
+}
+
+static int regulator_haptic_play_effect(struct input_dev *input, void *data,
+					struct ff_effect *effect)
+{
+	struct regulator_haptic *haptic = input_get_drvdata(input);
+
+	haptic->magnitude = effect->u.rumble.strong_magnitude;
+	if (!haptic->magnitude)
+		haptic->magnitude = effect->u.rumble.weak_magnitude;
+
+	schedule_work(&haptic->work);
+
+	return 0;
+}
+
+static void regulator_haptic_close(struct input_dev *input)
+{
+	struct regulator_haptic *haptic = input_get_drvdata(input);
+
+	cancel_work_sync(&haptic->work);
+	regulator_haptic_set_voltage(haptic, 0);
+}
+
+static int __maybe_unused
+regulator_haptic_parse_dt(struct device *dev, struct regulator_haptic *haptic)
+{
+	struct device_node *node;
+	int error;
+
+	node = dev->of_node;
+	if(!node) {
+		dev_err(dev, "Missing device tree data\n");
+		return -EINVAL;
+	}
+
+	error = of_property_read_u32(node, "max-microvolt", &haptic->max_volt);
+	if (error) {
+		dev_err(dev, "cannot parse max-microvolt\n");
+		return error;
+	}
+
+	error = of_property_read_u32(node, "min-microvolt", &haptic->min_volt);
+	if (error) {
+		dev_err(dev, "cannot parse min-microvolt\n");
+		return error;
+	}
+
+	return 0;
+}
+
+static int regulator_haptic_probe(struct platform_device *pdev)
+{
+	const struct regulator_haptic_data *pdata = dev_get_platdata(&pdev->dev);
+	struct regulator_haptic *haptic;
+	struct input_dev *input_dev;
+	int error;
+
+	haptic = devm_kzalloc(&pdev->dev, sizeof(*haptic), GFP_KERNEL);
+	if (!haptic)
+		return -ENOMEM;
+
+	platform_set_drvdata(pdev, haptic);
+	haptic->dev = &pdev->dev;
+	mutex_init(&haptic->mutex);
+	INIT_WORK(&haptic->work, regulator_haptic_work);
+
+	if (pdata) {
+		haptic->max_volt = pdata->max_volt;
+		haptic->min_volt = pdata->min_volt;
+	} else if (IS_ENABLED(CONFIG_OF)) {
+		error = regulator_haptic_parse_dt(&pdev->dev, haptic);
+		if (error)
+			return error;
+	} else {
+		dev_err(&pdev->dev, "Missing platform data\n");
+		return -EINVAL;
+	}
+
+	haptic->regulator = devm_regulator_get_exclusive(&pdev->dev, "haptic");
+	if (IS_ERR(haptic->regulator)) {
+		dev_err(&pdev->dev, "failed to get regulator\n");
+		return PTR_ERR(haptic->regulator);
+	}
+
+	input_dev = devm_input_allocate_device(&pdev->dev);
+	if (!input_dev)
+		return	-ENOMEM;
+
+	haptic->input_dev = input_dev;
+	haptic->input_dev->name = "regulator-haptic";
+	haptic->input_dev->dev.parent = &pdev->dev;
+	haptic->input_dev->close = regulator_haptic_close;
+	input_set_drvdata(haptic->input_dev, haptic);
+	input_set_capability(haptic->input_dev, EV_FF, FF_RUMBLE);
+
+	error = input_ff_create_memless(input_dev, NULL,
+					regulator_haptic_play_effect);
+	if (error) {
+		dev_err(&pdev->dev, "failed to create force-feedback\n");
+		return error;
+	}
+
+	error = input_register_device(haptic->input_dev);
+	if (error) {
+		dev_err(&pdev->dev, "failed to register input device\n");
+		return error;
+	}
+
+	return 0;
+}
+
+static int __maybe_unused regulator_haptic_suspend(struct device *dev)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct regulator_haptic *haptic = platform_get_drvdata(pdev);
+	int error;
+
+	error = mutex_lock_interruptible(&haptic->mutex);
+	if (error)
+		return error;
+
+	regulator_haptic_set_voltage(haptic, 0);
+
+	haptic->suspended = true;
+
+	mutex_unlock(&haptic->mutex);
+
+	return 0;
+}
+
+static int __maybe_unused regulator_haptic_resume(struct device *dev)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct regulator_haptic *haptic = platform_get_drvdata(pdev);
+	unsigned int magnitude;
+
+	mutex_lock(&haptic->mutex);
+
+	haptic->suspended = false;
+
+	magnitude = READ_ONCE(haptic->magnitude);
+	if (magnitude)
+		regulator_haptic_set_voltage(haptic, magnitude);
+
+	mutex_unlock(&haptic->mutex);
+
+	return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(regulator_haptic_pm_ops,
+		regulator_haptic_suspend, regulator_haptic_resume);
+
+static const struct of_device_id regulator_haptic_dt_match[] = {
+	{ .compatible = "regulator-haptic" },
+	{ /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, regulator_haptic_dt_match);
+
+static struct platform_driver regulator_haptic_driver = {
+	.probe		= regulator_haptic_probe,
+	.driver		= {
+		.name		= "regulator-haptic",
+		.of_match_table = regulator_haptic_dt_match,
+		.pm		= &regulator_haptic_pm_ops,
+	},
+};
+module_platform_driver(regulator_haptic_driver);
+
+MODULE_AUTHOR("Jaewon Kim <jaewon02.kim@samsung.com>");
+MODULE_AUTHOR("Hyunhee Kim <hyunhee.kim@samsung.com>");
+MODULE_DESCRIPTION("Regulator haptic driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/misc/retu-pwrbutton.c b/drivers/input/misc/retu-pwrbutton.c
new file mode 100644
index 000000000..64023ac08
--- /dev/null
+++ b/drivers/input/misc/retu-pwrbutton.c
@@ -0,0 +1,92 @@
+/*
+ * Retu power button driver.
+ *
+ * Copyright (C) 2004-2010 Nokia Corporation
+ *
+ * Original code written by Ari Saastamoinen, Juha Yrjölä and Felipe Balbi.
+ * Rewritten by Aaro Koskinen.
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License. See the file "COPYING" in the main directory of this
+ * archive for more details.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/irq.h>
+#include <linux/slab.h>
+#include <linux/errno.h>
+#include <linux/input.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mfd/retu.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+
+#define RETU_STATUS_PWRONX (1 << 5)
+
+static irqreturn_t retu_pwrbutton_irq(int irq, void *_pwr)
+{
+	struct input_dev *idev = _pwr;
+	struct retu_dev *rdev = input_get_drvdata(idev);
+	bool state;
+
+	state = !(retu_read(rdev, RETU_REG_STATUS) & RETU_STATUS_PWRONX);
+	input_report_key(idev, KEY_POWER, state);
+	input_sync(idev);
+
+	return IRQ_HANDLED;
+}
+
+static int retu_pwrbutton_probe(struct platform_device *pdev)
+{
+	struct retu_dev *rdev = dev_get_drvdata(pdev->dev.parent);
+	struct input_dev *idev;
+	int irq;
+	int error;
+
+	irq = platform_get_irq(pdev, 0);
+	if (irq < 0)
+		return irq;
+
+	idev = devm_input_allocate_device(&pdev->dev);
+	if (!idev)
+		return -ENOMEM;
+
+	idev->name = "retu-pwrbutton";
+	idev->dev.parent = &pdev->dev;
+
+	input_set_capability(idev, EV_KEY, KEY_POWER);
+	input_set_drvdata(idev, rdev);
+
+	error = devm_request_threaded_irq(&pdev->dev, irq,
+					  NULL, retu_pwrbutton_irq,
+					  IRQF_ONESHOT,
+					  "retu-pwrbutton", idev);
+	if (error)
+		return error;
+
+	error = input_register_device(idev);
+	if (error)
+		return error;
+
+	return 0;
+}
+
+static struct platform_driver retu_pwrbutton_driver = {
+	.probe		= retu_pwrbutton_probe,
+	.driver		= {
+		.name	= "retu-pwrbutton",
+	},
+};
+module_platform_driver(retu_pwrbutton_driver);
+
+MODULE_ALIAS("platform:retu-pwrbutton");
+MODULE_DESCRIPTION("Retu Power Button");
+MODULE_AUTHOR("Ari Saastamoinen");
+MODULE_AUTHOR("Felipe Balbi");
+MODULE_AUTHOR("Aaro Koskinen <aaro.koskinen@iki.fi>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/misc/rk805-pwrkey.c b/drivers/input/misc/rk805-pwrkey.c
new file mode 100644
index 000000000..76873aa00
--- /dev/null
+++ b/drivers/input/misc/rk805-pwrkey.c
@@ -0,0 +1,104 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Rockchip RK805 PMIC Power Key driver
+ *
+ * Copyright (c) 2017, Fuzhou Rockchip Electronics Co., Ltd
+ *
+ * Author: Joseph Chen <chenjh@rock-chips.com>
+ */
+
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+static irqreturn_t pwrkey_fall_irq(int irq, void *_pwr)
+{
+	struct input_dev *pwr = _pwr;
+
+	input_report_key(pwr, KEY_POWER, 1);
+	input_sync(pwr);
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t pwrkey_rise_irq(int irq, void *_pwr)
+{
+	struct input_dev *pwr = _pwr;
+
+	input_report_key(pwr, KEY_POWER, 0);
+	input_sync(pwr);
+
+	return IRQ_HANDLED;
+}
+
+static int rk805_pwrkey_probe(struct platform_device *pdev)
+{
+	struct input_dev *pwr;
+	int fall_irq, rise_irq;
+	int err;
+
+	pwr = devm_input_allocate_device(&pdev->dev);
+	if (!pwr) {
+		dev_err(&pdev->dev, "Can't allocate power button\n");
+		return -ENOMEM;
+	}
+
+	pwr->name = "rk805 pwrkey";
+	pwr->phys = "rk805_pwrkey/input0";
+	pwr->id.bustype = BUS_HOST;
+	input_set_capability(pwr, EV_KEY, KEY_POWER);
+
+	fall_irq = platform_get_irq(pdev, 0);
+	if (fall_irq < 0)
+		return fall_irq;
+
+	rise_irq = platform_get_irq(pdev, 1);
+	if (rise_irq < 0)
+		return rise_irq;
+
+	err = devm_request_any_context_irq(&pwr->dev, fall_irq,
+					   pwrkey_fall_irq,
+					   IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
+					   "rk805_pwrkey_fall", pwr);
+	if (err < 0) {
+		dev_err(&pdev->dev, "Can't register fall irq: %d\n", err);
+		return err;
+	}
+
+	err = devm_request_any_context_irq(&pwr->dev, rise_irq,
+					   pwrkey_rise_irq,
+					   IRQF_TRIGGER_RISING | IRQF_ONESHOT,
+					   "rk805_pwrkey_rise", pwr);
+	if (err < 0) {
+		dev_err(&pdev->dev, "Can't register rise irq: %d\n", err);
+		return err;
+	}
+
+	err = input_register_device(pwr);
+	if (err) {
+		dev_err(&pdev->dev, "Can't register power button: %d\n", err);
+		return err;
+	}
+
+	platform_set_drvdata(pdev, pwr);
+	device_init_wakeup(&pdev->dev, true);
+
+	return 0;
+}
+
+static struct platform_driver rk805_pwrkey_driver = {
+	.probe	= rk805_pwrkey_probe,
+	.driver	= {
+		.name = "rk805-pwrkey",
+	},
+};
+module_platform_driver(rk805_pwrkey_driver);
+
+MODULE_ALIAS("platform:rk805-pwrkey");
+MODULE_AUTHOR("Joseph Chen <chenjh@rock-chips.com>");
+MODULE_DESCRIPTION("RK805 PMIC Power Key driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/misc/rotary_encoder.c b/drivers/input/misc/rotary_encoder.c
new file mode 100644
index 000000000..6d613f2a0
--- /dev/null
+++ b/drivers/input/misc/rotary_encoder.c
@@ -0,0 +1,370 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * rotary_encoder.c
+ *
+ * (c) 2009 Daniel Mack <daniel@caiaq.de>
+ * Copyright (C) 2011 Johan Hovold <jhovold@gmail.com>
+ *
+ * state machine code inspired by code from Tim Ruetz
+ *
+ * A generic driver for rotary encoders connected to GPIO lines.
+ * See file:Documentation/input/devices/rotary-encoder.rst for more information
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/input.h>
+#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/gpio/consumer.h>
+#include <linux/slab.h>
+#include <linux/of.h>
+#include <linux/pm.h>
+#include <linux/property.h>
+
+#define DRV_NAME "rotary-encoder"
+
+enum rotary_encoder_encoding {
+	ROTENC_GRAY,
+	ROTENC_BINARY,
+};
+
+struct rotary_encoder {
+	struct input_dev *input;
+
+	struct mutex access_mutex;
+
+	u32 steps;
+	u32 axis;
+	bool relative_axis;
+	bool rollover;
+	enum rotary_encoder_encoding encoding;
+
+	unsigned int pos;
+
+	struct gpio_descs *gpios;
+
+	unsigned int *irq;
+
+	bool armed;
+	signed char dir;	/* 1 - clockwise, -1 - CCW */
+
+	unsigned int last_stable;
+};
+
+static unsigned int rotary_encoder_get_state(struct rotary_encoder *encoder)
+{
+	int i;
+	unsigned int ret = 0;
+
+	for (i = 0; i < encoder->gpios->ndescs; ++i) {
+		int val = gpiod_get_value_cansleep(encoder->gpios->desc[i]);
+
+		/* convert from gray encoding to normal */
+		if (encoder->encoding == ROTENC_GRAY && ret & 1)
+			val = !val;
+
+		ret = ret << 1 | val;
+	}
+
+	return ret & 3;
+}
+
+static void rotary_encoder_report_event(struct rotary_encoder *encoder)
+{
+	if (encoder->relative_axis) {
+		input_report_rel(encoder->input,
+				 encoder->axis, encoder->dir);
+	} else {
+		unsigned int pos = encoder->pos;
+
+		if (encoder->dir < 0) {
+			/* turning counter-clockwise */
+			if (encoder->rollover)
+				pos += encoder->steps;
+			if (pos)
+				pos--;
+		} else {
+			/* turning clockwise */
+			if (encoder->rollover || pos < encoder->steps)
+				pos++;
+		}
+
+		if (encoder->rollover)
+			pos %= encoder->steps;
+
+		encoder->pos = pos;
+		input_report_abs(encoder->input, encoder->axis, encoder->pos);
+	}
+
+	input_sync(encoder->input);
+}
+
+static irqreturn_t rotary_encoder_irq(int irq, void *dev_id)
+{
+	struct rotary_encoder *encoder = dev_id;
+	unsigned int state;
+
+	mutex_lock(&encoder->access_mutex);
+
+	state = rotary_encoder_get_state(encoder);
+
+	switch (state) {
+	case 0x0:
+		if (encoder->armed) {
+			rotary_encoder_report_event(encoder);
+			encoder->armed = false;
+		}
+		break;
+
+	case 0x1:
+	case 0x3:
+		if (encoder->armed)
+			encoder->dir = 2 - state;
+		break;
+
+	case 0x2:
+		encoder->armed = true;
+		break;
+	}
+
+	mutex_unlock(&encoder->access_mutex);
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t rotary_encoder_half_period_irq(int irq, void *dev_id)
+{
+	struct rotary_encoder *encoder = dev_id;
+	unsigned int state;
+
+	mutex_lock(&encoder->access_mutex);
+
+	state = rotary_encoder_get_state(encoder);
+
+	if (state & 1) {
+		encoder->dir = ((encoder->last_stable - state + 1) % 4) - 1;
+	} else {
+		if (state != encoder->last_stable) {
+			rotary_encoder_report_event(encoder);
+			encoder->last_stable = state;
+		}
+	}
+
+	mutex_unlock(&encoder->access_mutex);
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t rotary_encoder_quarter_period_irq(int irq, void *dev_id)
+{
+	struct rotary_encoder *encoder = dev_id;
+	unsigned int state;
+
+	mutex_lock(&encoder->access_mutex);
+
+	state = rotary_encoder_get_state(encoder);
+
+	if ((encoder->last_stable + 1) % 4 == state)
+		encoder->dir = 1;
+	else if (encoder->last_stable == (state + 1) % 4)
+		encoder->dir = -1;
+	else
+		goto out;
+
+	rotary_encoder_report_event(encoder);
+
+out:
+	encoder->last_stable = state;
+	mutex_unlock(&encoder->access_mutex);
+
+	return IRQ_HANDLED;
+}
+
+static int rotary_encoder_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct rotary_encoder *encoder;
+	struct input_dev *input;
+	irq_handler_t handler;
+	u32 steps_per_period;
+	unsigned int i;
+	int err;
+
+	encoder = devm_kzalloc(dev, sizeof(struct rotary_encoder), GFP_KERNEL);
+	if (!encoder)
+		return -ENOMEM;
+
+	mutex_init(&encoder->access_mutex);
+
+	device_property_read_u32(dev, "rotary-encoder,steps", &encoder->steps);
+
+	err = device_property_read_u32(dev, "rotary-encoder,steps-per-period",
+				       &steps_per_period);
+	if (err) {
+		/*
+		 * The 'half-period' property has been deprecated, you must
+		 * use 'steps-per-period' and set an appropriate value, but
+		 * we still need to parse it to maintain compatibility. If
+		 * neither property is present we fall back to the one step
+		 * per period behavior.
+		 */
+		steps_per_period = device_property_read_bool(dev,
+					"rotary-encoder,half-period") ? 2 : 1;
+	}
+
+	encoder->rollover =
+		device_property_read_bool(dev, "rotary-encoder,rollover");
+
+	if (!device_property_present(dev, "rotary-encoder,encoding") ||
+	    !device_property_match_string(dev, "rotary-encoder,encoding",
+					  "gray")) {
+		dev_info(dev, "gray");
+		encoder->encoding = ROTENC_GRAY;
+	} else if (!device_property_match_string(dev, "rotary-encoder,encoding",
+						 "binary")) {
+		dev_info(dev, "binary");
+		encoder->encoding = ROTENC_BINARY;
+	} else {
+		dev_err(dev, "unknown encoding setting\n");
+		return -EINVAL;
+	}
+
+	device_property_read_u32(dev, "linux,axis", &encoder->axis);
+	encoder->relative_axis =
+		device_property_read_bool(dev, "rotary-encoder,relative-axis");
+
+	encoder->gpios = devm_gpiod_get_array(dev, NULL, GPIOD_IN);
+	if (IS_ERR(encoder->gpios)) {
+		err = PTR_ERR(encoder->gpios);
+		if (err != -EPROBE_DEFER)
+			dev_err(dev, "unable to get gpios: %d\n", err);
+		return err;
+	}
+	if (encoder->gpios->ndescs < 2) {
+		dev_err(dev, "not enough gpios found\n");
+		return -EINVAL;
+	}
+
+	input = devm_input_allocate_device(dev);
+	if (!input)
+		return -ENOMEM;
+
+	encoder->input = input;
+
+	input->name = pdev->name;
+	input->id.bustype = BUS_HOST;
+	input->dev.parent = dev;
+
+	if (encoder->relative_axis)
+		input_set_capability(input, EV_REL, encoder->axis);
+	else
+		input_set_abs_params(input,
+				     encoder->axis, 0, encoder->steps, 0, 1);
+
+	switch (steps_per_period >> (encoder->gpios->ndescs - 2)) {
+	case 4:
+		handler = &rotary_encoder_quarter_period_irq;
+		encoder->last_stable = rotary_encoder_get_state(encoder);
+		break;
+	case 2:
+		handler = &rotary_encoder_half_period_irq;
+		encoder->last_stable = rotary_encoder_get_state(encoder);
+		break;
+	case 1:
+		handler = &rotary_encoder_irq;
+		break;
+	default:
+		dev_err(dev, "'%d' is not a valid steps-per-period value\n",
+			steps_per_period);
+		return -EINVAL;
+	}
+
+	encoder->irq =
+		devm_kcalloc(dev,
+			     encoder->gpios->ndescs, sizeof(*encoder->irq),
+			     GFP_KERNEL);
+	if (!encoder->irq)
+		return -ENOMEM;
+
+	for (i = 0; i < encoder->gpios->ndescs; ++i) {
+		encoder->irq[i] = gpiod_to_irq(encoder->gpios->desc[i]);
+
+		err = devm_request_threaded_irq(dev, encoder->irq[i],
+				NULL, handler,
+				IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING |
+				IRQF_ONESHOT,
+				DRV_NAME, encoder);
+		if (err) {
+			dev_err(dev, "unable to request IRQ %d (gpio#%d)\n",
+				encoder->irq[i], i);
+			return err;
+		}
+	}
+
+	err = input_register_device(input);
+	if (err) {
+		dev_err(dev, "failed to register input device\n");
+		return err;
+	}
+
+	device_init_wakeup(dev,
+			   device_property_read_bool(dev, "wakeup-source"));
+
+	platform_set_drvdata(pdev, encoder);
+
+	return 0;
+}
+
+static int __maybe_unused rotary_encoder_suspend(struct device *dev)
+{
+	struct rotary_encoder *encoder = dev_get_drvdata(dev);
+	unsigned int i;
+
+	if (device_may_wakeup(dev)) {
+		for (i = 0; i < encoder->gpios->ndescs; ++i)
+			enable_irq_wake(encoder->irq[i]);
+	}
+
+	return 0;
+}
+
+static int __maybe_unused rotary_encoder_resume(struct device *dev)
+{
+	struct rotary_encoder *encoder = dev_get_drvdata(dev);
+	unsigned int i;
+
+	if (device_may_wakeup(dev)) {
+		for (i = 0; i < encoder->gpios->ndescs; ++i)
+			disable_irq_wake(encoder->irq[i]);
+	}
+
+	return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(rotary_encoder_pm_ops,
+			 rotary_encoder_suspend, rotary_encoder_resume);
+
+#ifdef CONFIG_OF
+static const struct of_device_id rotary_encoder_of_match[] = {
+	{ .compatible = "rotary-encoder", },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, rotary_encoder_of_match);
+#endif
+
+static struct platform_driver rotary_encoder_driver = {
+	.probe		= rotary_encoder_probe,
+	.driver		= {
+		.name	= DRV_NAME,
+		.pm	= &rotary_encoder_pm_ops,
+		.of_match_table = of_match_ptr(rotary_encoder_of_match),
+	}
+};
+module_platform_driver(rotary_encoder_driver);
+
+MODULE_ALIAS("platform:" DRV_NAME);
+MODULE_DESCRIPTION("GPIO rotary encoder driver");
+MODULE_AUTHOR("Daniel Mack <daniel@caiaq.de>, Johan Hovold");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/input/misc/rt5120-pwrkey.c b/drivers/input/misc/rt5120-pwrkey.c
new file mode 100644
index 000000000..8a8c1aeee
--- /dev/null
+++ b/drivers/input/misc/rt5120-pwrkey.c
@@ -0,0 +1,120 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2022 Richtek Technology Corp.
+ * Author: ChiYuan Huang <cy_huang@richtek.com>
+ */
+
+#include <linux/bits.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+
+#define RT5120_REG_INTSTAT	0x1E
+#define RT5120_PWRKEYSTAT_MASK	BIT(7)
+
+struct rt5120_priv {
+	struct regmap *regmap;
+	struct input_dev *input;
+};
+
+static irqreturn_t rt5120_pwrkey_handler(int irq, void *devid)
+{
+	struct rt5120_priv *priv = devid;
+	unsigned int stat;
+	int error;
+
+	error = regmap_read(priv->regmap, RT5120_REG_INTSTAT, &stat);
+	if (error)
+		return IRQ_NONE;
+
+	input_report_key(priv->input, KEY_POWER,
+			 !(stat & RT5120_PWRKEYSTAT_MASK));
+	input_sync(priv->input);
+
+	return IRQ_HANDLED;
+}
+
+static int rt5120_pwrkey_probe(struct platform_device *pdev)
+{
+	struct rt5120_priv *priv;
+	struct device *dev = &pdev->dev;
+	int press_irq, release_irq;
+	int error;
+
+	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	priv->regmap = dev_get_regmap(dev->parent, NULL);
+	if (!priv->regmap) {
+		dev_err(dev, "Failed to init regmap\n");
+		return -ENODEV;
+	}
+
+	press_irq = platform_get_irq_byname(pdev, "pwrkey-press");
+	if (press_irq < 0)
+		return press_irq;
+
+	release_irq = platform_get_irq_byname(pdev, "pwrkey-release");
+	if (release_irq < 0)
+		return release_irq;
+
+	/* Make input device be device resource managed */
+	priv->input = devm_input_allocate_device(dev);
+	if (!priv->input)
+		return -ENOMEM;
+
+	priv->input->name = "rt5120_pwrkey";
+	priv->input->phys = "rt5120_pwrkey/input0";
+	priv->input->id.bustype = BUS_I2C;
+	input_set_capability(priv->input, EV_KEY, KEY_POWER);
+
+	error = input_register_device(priv->input);
+	if (error) {
+		dev_err(dev, "Failed to register input device: %d\n", error);
+		return error;
+	}
+
+	error = devm_request_threaded_irq(dev, press_irq,
+					  NULL, rt5120_pwrkey_handler,
+					  0, "pwrkey-press", priv);
+	if (error) {
+		dev_err(dev,
+			"Failed to register pwrkey press irq: %d\n", error);
+		return error;
+	}
+
+	error = devm_request_threaded_irq(dev, release_irq,
+					  NULL, rt5120_pwrkey_handler,
+					  0, "pwrkey-release", priv);
+	if (error) {
+		dev_err(dev,
+			"Failed to register pwrkey release irq: %d\n", error);
+		return error;
+	}
+
+	return 0;
+}
+
+static const struct of_device_id r5120_pwrkey_match_table[] = {
+	{ .compatible = "richtek,rt5120-pwrkey" },
+	{}
+};
+MODULE_DEVICE_TABLE(of, r5120_pwrkey_match_table);
+
+static struct platform_driver rt5120_pwrkey_driver = {
+	.driver = {
+		.name = "rt5120-pwrkey",
+		.of_match_table = r5120_pwrkey_match_table,
+	},
+	.probe = rt5120_pwrkey_probe,
+};
+module_platform_driver(rt5120_pwrkey_driver);
+
+MODULE_AUTHOR("ChiYuan Huang <cy_huang@richtek.com>");
+MODULE_DESCRIPTION("Richtek RT5120 power key driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/misc/sc27xx-vibra.c b/drivers/input/misc/sc27xx-vibra.c
new file mode 100644
index 000000000..1478017f0
--- /dev/null
+++ b/drivers/input/misc/sc27xx-vibra.c
@@ -0,0 +1,201 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2018 Spreadtrum Communications Inc.
+ */
+
+#include <linux/device.h>
+#include <linux/input.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/property.h>
+#include <linux/regmap.h>
+#include <linux/workqueue.h>
+
+#define CUR_DRV_CAL_SEL			GENMASK(13, 12)
+#define SLP_LDOVIBR_PD_EN		BIT(9)
+#define LDO_VIBR_PD			BIT(8)
+#define SC2730_CUR_DRV_CAL_SEL		0
+#define SC2730_SLP_LDOVIBR_PD_EN	BIT(14)
+#define SC2730_LDO_VIBR_PD		BIT(13)
+
+struct sc27xx_vibra_data {
+	u32 cur_drv_cal_sel;
+	u32 slp_pd_en;
+	u32 ldo_pd;
+};
+
+struct vibra_info {
+	struct input_dev	*input_dev;
+	struct work_struct	play_work;
+	struct regmap		*regmap;
+	const struct sc27xx_vibra_data *data;
+	u32			base;
+	u32			strength;
+	bool			enabled;
+};
+
+static const struct sc27xx_vibra_data sc2731_data = {
+	.cur_drv_cal_sel = CUR_DRV_CAL_SEL,
+	.slp_pd_en = SLP_LDOVIBR_PD_EN,
+	.ldo_pd = LDO_VIBR_PD,
+};
+
+static const struct sc27xx_vibra_data sc2730_data = {
+	.cur_drv_cal_sel = SC2730_CUR_DRV_CAL_SEL,
+	.slp_pd_en = SC2730_SLP_LDOVIBR_PD_EN,
+	.ldo_pd = SC2730_LDO_VIBR_PD,
+};
+
+static const struct sc27xx_vibra_data sc2721_data = {
+	.cur_drv_cal_sel = CUR_DRV_CAL_SEL,
+	.slp_pd_en = SLP_LDOVIBR_PD_EN,
+	.ldo_pd = LDO_VIBR_PD,
+};
+
+static void sc27xx_vibra_set(struct vibra_info *info, bool on)
+{
+	const struct sc27xx_vibra_data *data = info->data;
+	if (on) {
+		regmap_update_bits(info->regmap, info->base, data->ldo_pd, 0);
+		regmap_update_bits(info->regmap, info->base,
+				   data->slp_pd_en, 0);
+		info->enabled = true;
+	} else {
+		regmap_update_bits(info->regmap, info->base, data->ldo_pd,
+				   data->ldo_pd);
+		regmap_update_bits(info->regmap, info->base,
+				   data->slp_pd_en, data->slp_pd_en);
+		info->enabled = false;
+	}
+}
+
+static int sc27xx_vibra_hw_init(struct vibra_info *info)
+{
+	const struct sc27xx_vibra_data *data = info->data;
+
+	if (!data->cur_drv_cal_sel)
+		return 0;
+
+	return regmap_update_bits(info->regmap, info->base,
+				  data->cur_drv_cal_sel, 0);
+}
+
+static void sc27xx_vibra_play_work(struct work_struct *work)
+{
+	struct vibra_info *info = container_of(work, struct vibra_info,
+					       play_work);
+
+	if (info->strength && !info->enabled)
+		sc27xx_vibra_set(info, true);
+	else if (info->strength == 0 && info->enabled)
+		sc27xx_vibra_set(info, false);
+}
+
+static int sc27xx_vibra_play(struct input_dev *input, void *data,
+			     struct ff_effect *effect)
+{
+	struct vibra_info *info = input_get_drvdata(input);
+
+	info->strength = effect->u.rumble.weak_magnitude;
+	schedule_work(&info->play_work);
+
+	return 0;
+}
+
+static void sc27xx_vibra_close(struct input_dev *input)
+{
+	struct vibra_info *info = input_get_drvdata(input);
+
+	cancel_work_sync(&info->play_work);
+	if (info->enabled)
+		sc27xx_vibra_set(info, false);
+}
+
+static int sc27xx_vibra_probe(struct platform_device *pdev)
+{
+	struct vibra_info *info;
+	const struct sc27xx_vibra_data *data;
+	int error;
+
+	data = device_get_match_data(&pdev->dev);
+	if (!data) {
+		dev_err(&pdev->dev, "no matching driver data found\n");
+		return -EINVAL;
+	}
+
+	info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
+	if (!info)
+		return -ENOMEM;
+
+	info->regmap = dev_get_regmap(pdev->dev.parent, NULL);
+	if (!info->regmap) {
+		dev_err(&pdev->dev, "failed to get vibrator regmap.\n");
+		return -ENODEV;
+	}
+
+	error = device_property_read_u32(&pdev->dev, "reg", &info->base);
+	if (error) {
+		dev_err(&pdev->dev, "failed to get vibrator base address.\n");
+		return error;
+	}
+
+	info->input_dev = devm_input_allocate_device(&pdev->dev);
+	if (!info->input_dev) {
+		dev_err(&pdev->dev, "failed to allocate input device.\n");
+		return -ENOMEM;
+	}
+
+	info->input_dev->name = "sc27xx:vibrator";
+	info->input_dev->id.version = 0;
+	info->input_dev->close = sc27xx_vibra_close;
+	info->data = data;
+
+	input_set_drvdata(info->input_dev, info);
+	input_set_capability(info->input_dev, EV_FF, FF_RUMBLE);
+	INIT_WORK(&info->play_work, sc27xx_vibra_play_work);
+	info->enabled = false;
+
+	error = sc27xx_vibra_hw_init(info);
+	if (error) {
+		dev_err(&pdev->dev, "failed to initialize the vibrator.\n");
+		return error;
+	}
+
+	error = input_ff_create_memless(info->input_dev, NULL,
+					sc27xx_vibra_play);
+	if (error) {
+		dev_err(&pdev->dev, "failed to register vibrator to FF.\n");
+		return error;
+	}
+
+	error = input_register_device(info->input_dev);
+	if (error) {
+		dev_err(&pdev->dev, "failed to register input device.\n");
+		return error;
+	}
+
+	return 0;
+}
+
+static const struct of_device_id sc27xx_vibra_of_match[] = {
+	{ .compatible = "sprd,sc2721-vibrator", .data = &sc2721_data },
+	{ .compatible = "sprd,sc2730-vibrator", .data = &sc2730_data },
+	{ .compatible = "sprd,sc2731-vibrator", .data = &sc2731_data },
+	{}
+};
+MODULE_DEVICE_TABLE(of, sc27xx_vibra_of_match);
+
+static struct platform_driver sc27xx_vibra_driver = {
+	.driver = {
+		.name = "sc27xx-vibrator",
+		.of_match_table = sc27xx_vibra_of_match,
+	},
+	.probe = sc27xx_vibra_probe,
+};
+
+module_platform_driver(sc27xx_vibra_driver);
+
+MODULE_DESCRIPTION("Spreadtrum SC27xx Vibrator Driver");
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Xiaotong Lu <xiaotong.lu@spreadtrum.com>");
diff --git a/drivers/input/misc/sgi_btns.c b/drivers/input/misc/sgi_btns.c
new file mode 100644
index 000000000..0657d785b
--- /dev/null
+++ b/drivers/input/misc/sgi_btns.c
@@ -0,0 +1,131 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *  SGI Volume Button interface driver
+ *
+ *  Copyright (C) 2008  Thomas Bogendoerfer <tsbogend@alpha.franken.de>
+ */
+#include <linux/input.h>
+#include <linux/ioport.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+
+#ifdef CONFIG_SGI_IP22
+#include <asm/sgi/ioc.h>
+
+static inline u8 button_status(void)
+{
+	u8 status;
+
+	status = readb(&sgioc->panel) ^ 0xa0;
+	return ((status & 0x80) >> 6) | ((status & 0x20) >> 5);
+}
+#endif
+
+#ifdef CONFIG_SGI_IP32
+#include <asm/ip32/mace.h>
+
+static inline u8 button_status(void)
+{
+	u64 status;
+
+	status = readq(&mace->perif.audio.control);
+	writeq(status & ~(3U << 23), &mace->perif.audio.control);
+
+	return (status >> 23) & 3;
+}
+#endif
+
+#define BUTTONS_POLL_INTERVAL	30	/* msec */
+#define BUTTONS_COUNT_THRESHOLD	3
+
+static const unsigned short sgi_map[] = {
+	KEY_VOLUMEDOWN,
+	KEY_VOLUMEUP
+};
+
+struct buttons_dev {
+	unsigned short keymap[ARRAY_SIZE(sgi_map)];
+	int count[ARRAY_SIZE(sgi_map)];
+};
+
+static void handle_buttons(struct input_dev *input)
+{
+	struct buttons_dev *bdev = input_get_drvdata(input);
+	u8 status;
+	int i;
+
+	status = button_status();
+
+	for (i = 0; i < ARRAY_SIZE(bdev->keymap); i++) {
+		if (status & (1U << i)) {
+			if (++bdev->count[i] == BUTTONS_COUNT_THRESHOLD) {
+				input_event(input, EV_MSC, MSC_SCAN, i);
+				input_report_key(input, bdev->keymap[i], 1);
+				input_sync(input);
+			}
+		} else {
+			if (bdev->count[i] >= BUTTONS_COUNT_THRESHOLD) {
+				input_event(input, EV_MSC, MSC_SCAN, i);
+				input_report_key(input, bdev->keymap[i], 0);
+				input_sync(input);
+			}
+			bdev->count[i] = 0;
+		}
+	}
+}
+
+static int sgi_buttons_probe(struct platform_device *pdev)
+{
+	struct buttons_dev *bdev;
+	struct input_dev *input;
+	int error, i;
+
+	bdev = devm_kzalloc(&pdev->dev, sizeof(*bdev), GFP_KERNEL);
+	if (!bdev)
+		return -ENOMEM;
+
+	input = devm_input_allocate_device(&pdev->dev);
+	if (!input)
+		return -ENOMEM;
+
+	memcpy(bdev->keymap, sgi_map, sizeof(bdev->keymap));
+
+	input_set_drvdata(input, bdev);
+
+	input->name = "SGI buttons";
+	input->phys = "sgi/input0";
+	input->id.bustype = BUS_HOST;
+
+	input->keycode = bdev->keymap;
+	input->keycodemax = ARRAY_SIZE(bdev->keymap);
+	input->keycodesize = sizeof(unsigned short);
+
+	input_set_capability(input, EV_MSC, MSC_SCAN);
+	__set_bit(EV_KEY, input->evbit);
+	for (i = 0; i < ARRAY_SIZE(sgi_map); i++)
+		__set_bit(bdev->keymap[i], input->keybit);
+	__clear_bit(KEY_RESERVED, input->keybit);
+
+	error = input_setup_polling(input, handle_buttons);
+	if (error)
+		return error;
+
+	input_set_poll_interval(input, BUTTONS_POLL_INTERVAL);
+
+	error = input_register_device(input);
+	if (error)
+		return error;
+
+	return 0;
+}
+
+static struct platform_driver sgi_buttons_driver = {
+	.probe	= sgi_buttons_probe,
+	.driver	= {
+		.name	= "sgibtns",
+	},
+};
+module_platform_driver(sgi_buttons_driver);
+
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/misc/soc_button_array.c b/drivers/input/misc/soc_button_array.c
new file mode 100644
index 000000000..9116f4248
--- /dev/null
+++ b/drivers/input/misc/soc_button_array.c
@@ -0,0 +1,625 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Supports for the button array on SoC tablets originally running
+ * Windows 8.
+ *
+ * (C) Copyright 2014 Intel Corporation
+ */
+
+#include <linux/module.h>
+#include <linux/input.h>
+#include <linux/init.h>
+#include <linux/irq.h>
+#include <linux/kernel.h>
+#include <linux/acpi.h>
+#include <linux/dmi.h>
+#include <linux/gpio/consumer.h>
+#include <linux/gpio_keys.h>
+#include <linux/gpio.h>
+#include <linux/platform_device.h>
+
+static bool use_low_level_irq;
+module_param(use_low_level_irq, bool, 0444);
+MODULE_PARM_DESC(use_low_level_irq, "Use low-level triggered IRQ instead of edge triggered");
+
+struct soc_button_info {
+	const char *name;
+	int acpi_index;
+	unsigned int event_type;
+	unsigned int event_code;
+	bool autorepeat;
+	bool wakeup;
+	bool active_low;
+};
+
+struct soc_device_data {
+	const struct soc_button_info *button_info;
+	int (*check)(struct device *dev);
+};
+
+/*
+ * Some of the buttons like volume up/down are auto repeat, while others
+ * are not. To support both, we register two platform devices, and put
+ * buttons into them based on whether the key should be auto repeat.
+ */
+#define BUTTON_TYPES	2
+
+struct soc_button_data {
+	struct platform_device *children[BUTTON_TYPES];
+};
+
+/*
+ * Some 2-in-1s which use the soc_button_array driver have this ugly issue in
+ * their DSDT where the _LID method modifies the irq-type settings of the GPIOs
+ * used for the power and home buttons. The intend of this AML code is to
+ * disable these buttons when the lid is closed.
+ * The AML does this by directly poking the GPIO controllers registers. This is
+ * problematic because when re-enabling the irq, which happens whenever _LID
+ * gets called with the lid open (e.g. on boot and on resume), it sets the
+ * irq-type to IRQ_TYPE_LEVEL_LOW. Where as the gpio-keys driver programs the
+ * type to, and expects it to be, IRQ_TYPE_EDGE_BOTH.
+ * To work around this we don't set gpio_keys_button.gpio on these 2-in-1s,
+ * instead we get the irq for the GPIO ourselves, configure it as
+ * IRQ_TYPE_LEVEL_LOW (to match how the _LID AML code configures it) and pass
+ * the irq in gpio_keys_button.irq. Below is a list of affected devices.
+ */
+static const struct dmi_system_id dmi_use_low_level_irq[] = {
+	{
+		/*
+		 * Acer Switch 10 SW5-012. _LID method messes with home- and
+		 * power-button GPIO IRQ settings. When (re-)enabling the irq
+		 * it ors in its own flags without clearing the previous set
+		 * ones, leading to an irq-type of IRQ_TYPE_LEVEL_LOW |
+		 * IRQ_TYPE_LEVEL_HIGH causing a continuous interrupt storm.
+		 */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire SW5-012"),
+		},
+	},
+	{
+		/* Acer Switch V 10 SW5-017, same issue as Acer Switch 10 SW5-012. */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "SW5-017"),
+		},
+	},
+	{
+		/*
+		 * Acer One S1003. _LID method messes with power-button GPIO
+		 * IRQ settings, leading to a non working power-button.
+		 */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "One S1003"),
+		},
+	},
+	{
+		/*
+		 * Lenovo Yoga Tab2 1051F/1051L, something messes with the home-button
+		 * IRQ settings, leading to a non working home-button.
+		 */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "60073"),
+			DMI_MATCH(DMI_PRODUCT_VERSION, "1051"),
+		},
+	},
+	{} /* Terminating entry */
+};
+
+/*
+ * Some devices have a wrong entry which points to a GPIO which is
+ * required in another driver, so this driver must not claim it.
+ */
+static const struct dmi_system_id dmi_invalid_acpi_index[] = {
+	{
+		/*
+		 * Lenovo Yoga Book X90F / X90L, the PNP0C40 home button entry
+		 * points to a GPIO which is not a home button and which is
+		 * required by the lenovo-yogabook driver.
+		 */
+		.matches = {
+			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Intel Corporation"),
+			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "CHERRYVIEW D1 PLATFORM"),
+			DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "YETI-11"),
+		},
+		.driver_data = (void *)1l,
+	},
+	{} /* Terminating entry */
+};
+
+/*
+ * Get the Nth GPIO number from the ACPI object.
+ */
+static int soc_button_lookup_gpio(struct device *dev, int acpi_index,
+				  int *gpio_ret, int *irq_ret)
+{
+	struct gpio_desc *desc;
+
+	desc = gpiod_get_index(dev, NULL, acpi_index, GPIOD_ASIS);
+	if (IS_ERR(desc))
+		return PTR_ERR(desc);
+
+	*gpio_ret = desc_to_gpio(desc);
+	*irq_ret = gpiod_to_irq(desc);
+
+	gpiod_put(desc);
+
+	return 0;
+}
+
+static struct platform_device *
+soc_button_device_create(struct platform_device *pdev,
+			 const struct soc_button_info *button_info,
+			 bool autorepeat)
+{
+	const struct soc_button_info *info;
+	struct platform_device *pd;
+	struct gpio_keys_button *gpio_keys;
+	struct gpio_keys_platform_data *gpio_keys_pdata;
+	const struct dmi_system_id *dmi_id;
+	int invalid_acpi_index = -1;
+	int error, gpio, irq;
+	int n_buttons = 0;
+
+	for (info = button_info; info->name; info++)
+		if (info->autorepeat == autorepeat)
+			n_buttons++;
+
+	gpio_keys_pdata = devm_kzalloc(&pdev->dev,
+				       sizeof(*gpio_keys_pdata) +
+					sizeof(*gpio_keys) * n_buttons,
+				       GFP_KERNEL);
+	if (!gpio_keys_pdata)
+		return ERR_PTR(-ENOMEM);
+
+	gpio_keys = (void *)(gpio_keys_pdata + 1);
+	n_buttons = 0;
+
+	dmi_id = dmi_first_match(dmi_invalid_acpi_index);
+	if (dmi_id)
+		invalid_acpi_index = (long)dmi_id->driver_data;
+
+	for (info = button_info; info->name; info++) {
+		if (info->autorepeat != autorepeat)
+			continue;
+
+		if (info->acpi_index == invalid_acpi_index)
+			continue;
+
+		error = soc_button_lookup_gpio(&pdev->dev, info->acpi_index, &gpio, &irq);
+		if (error || irq < 0) {
+			/*
+			 * Skip GPIO if not present. Note we deliberately
+			 * ignore -EPROBE_DEFER errors here. On some devices
+			 * Intel is using so called virtual GPIOs which are not
+			 * GPIOs at all but some way for AML code to check some
+			 * random status bits without need a custom opregion.
+			 * In some cases the resources table we parse points to
+			 * such a virtual GPIO, since these are not real GPIOs
+			 * we do not have a driver for these so they will never
+			 * show up, therefore we ignore -EPROBE_DEFER.
+			 */
+			continue;
+		}
+
+		/* See dmi_use_low_level_irq[] comment */
+		if (!autorepeat && (use_low_level_irq ||
+				    dmi_check_system(dmi_use_low_level_irq))) {
+			irq_set_irq_type(irq, IRQ_TYPE_LEVEL_LOW);
+			gpio_keys[n_buttons].irq = irq;
+			gpio_keys[n_buttons].gpio = -ENOENT;
+		} else {
+			gpio_keys[n_buttons].gpio = gpio;
+		}
+
+		gpio_keys[n_buttons].type = info->event_type;
+		gpio_keys[n_buttons].code = info->event_code;
+		gpio_keys[n_buttons].active_low = info->active_low;
+		gpio_keys[n_buttons].desc = info->name;
+		gpio_keys[n_buttons].wakeup = info->wakeup;
+		/* These devices often use cheap buttons, use 50 ms debounce */
+		gpio_keys[n_buttons].debounce_interval = 50;
+		n_buttons++;
+	}
+
+	if (n_buttons == 0) {
+		error = -ENODEV;
+		goto err_free_mem;
+	}
+
+	gpio_keys_pdata->buttons = gpio_keys;
+	gpio_keys_pdata->nbuttons = n_buttons;
+	gpio_keys_pdata->rep = autorepeat;
+
+	pd = platform_device_register_resndata(&pdev->dev, "gpio-keys",
+					       PLATFORM_DEVID_AUTO, NULL, 0,
+					       gpio_keys_pdata,
+					       sizeof(*gpio_keys_pdata));
+	error = PTR_ERR_OR_ZERO(pd);
+	if (error) {
+		dev_err(&pdev->dev,
+			"failed registering gpio-keys: %d\n", error);
+		goto err_free_mem;
+	}
+
+	return pd;
+
+err_free_mem:
+	devm_kfree(&pdev->dev, gpio_keys_pdata);
+	return ERR_PTR(error);
+}
+
+static int soc_button_get_acpi_object_int(const union acpi_object *obj)
+{
+	if (obj->type != ACPI_TYPE_INTEGER)
+		return -1;
+
+	return obj->integer.value;
+}
+
+/* Parse a single ACPI0011 _DSD button descriptor */
+static int soc_button_parse_btn_desc(struct device *dev,
+				     const union acpi_object *desc,
+				     int collection_uid,
+				     struct soc_button_info *info)
+{
+	int upage, usage;
+
+	if (desc->type != ACPI_TYPE_PACKAGE ||
+	    desc->package.count != 5 ||
+	    /* First byte should be 1 (control) */
+	    soc_button_get_acpi_object_int(&desc->package.elements[0]) != 1 ||
+	    /* Third byte should be collection uid */
+	    soc_button_get_acpi_object_int(&desc->package.elements[2]) !=
+							    collection_uid) {
+		dev_err(dev, "Invalid ACPI Button Descriptor\n");
+		return -ENODEV;
+	}
+
+	info->event_type = EV_KEY;
+	info->active_low = true;
+	info->acpi_index =
+		soc_button_get_acpi_object_int(&desc->package.elements[1]);
+	upage = soc_button_get_acpi_object_int(&desc->package.elements[3]);
+	usage = soc_button_get_acpi_object_int(&desc->package.elements[4]);
+
+	/*
+	 * The UUID: fa6bd625-9ce8-470d-a2c7-b3ca36c4282e descriptors use HID
+	 * usage page and usage codes, but otherwise the device is not HID
+	 * compliant: it uses one irq per button instead of generating HID
+	 * input reports and some buttons should generate wakeups where as
+	 * others should not, so we cannot use the HID subsystem.
+	 *
+	 * Luckily all devices only use a few usage page + usage combinations,
+	 * so we can simply check for the known combinations here.
+	 */
+	if (upage == 0x01 && usage == 0x81) {
+		info->name = "power";
+		info->event_code = KEY_POWER;
+		info->wakeup = true;
+	} else if (upage == 0x01 && usage == 0xc6) {
+		info->name = "airplane mode switch";
+		info->event_type = EV_SW;
+		info->event_code = SW_RFKILL_ALL;
+		info->active_low = false;
+	} else if (upage == 0x01 && usage == 0xca) {
+		info->name = "rotation lock switch";
+		info->event_type = EV_SW;
+		info->event_code = SW_ROTATE_LOCK;
+	} else if (upage == 0x07 && usage == 0xe3) {
+		info->name = "home";
+		info->event_code = KEY_LEFTMETA;
+		info->wakeup = true;
+	} else if (upage == 0x0c && usage == 0xe9) {
+		info->name = "volume_up";
+		info->event_code = KEY_VOLUMEUP;
+		info->autorepeat = true;
+	} else if (upage == 0x0c && usage == 0xea) {
+		info->name = "volume_down";
+		info->event_code = KEY_VOLUMEDOWN;
+		info->autorepeat = true;
+	} else {
+		dev_warn(dev, "Unknown button index %d upage %02x usage %02x, ignoring\n",
+			 info->acpi_index, upage, usage);
+		info->name = "unknown";
+		info->event_code = KEY_RESERVED;
+	}
+
+	return 0;
+}
+
+/* ACPI0011 _DSD btns descriptors UUID: fa6bd625-9ce8-470d-a2c7-b3ca36c4282e */
+static const u8 btns_desc_uuid[16] = {
+	0x25, 0xd6, 0x6b, 0xfa, 0xe8, 0x9c, 0x0d, 0x47,
+	0xa2, 0xc7, 0xb3, 0xca, 0x36, 0xc4, 0x28, 0x2e
+};
+
+/* Parse ACPI0011 _DSD button descriptors */
+static struct soc_button_info *soc_button_get_button_info(struct device *dev)
+{
+	struct acpi_buffer buf = { ACPI_ALLOCATE_BUFFER };
+	const union acpi_object *desc, *el0, *uuid, *btns_desc = NULL;
+	struct soc_button_info *button_info;
+	acpi_status status;
+	int i, btn, collection_uid = -1;
+
+	status = acpi_evaluate_object_typed(ACPI_HANDLE(dev), "_DSD", NULL,
+					    &buf, ACPI_TYPE_PACKAGE);
+	if (ACPI_FAILURE(status)) {
+		dev_err(dev, "ACPI _DSD object not found\n");
+		return ERR_PTR(-ENODEV);
+	}
+
+	/* Look for the Button Descriptors UUID */
+	desc = buf.pointer;
+	for (i = 0; (i + 1) < desc->package.count; i += 2) {
+		uuid = &desc->package.elements[i];
+
+		if (uuid->type != ACPI_TYPE_BUFFER ||
+		    uuid->buffer.length != 16 ||
+		    desc->package.elements[i + 1].type != ACPI_TYPE_PACKAGE) {
+			break;
+		}
+
+		if (memcmp(uuid->buffer.pointer, btns_desc_uuid, 16) == 0) {
+			btns_desc = &desc->package.elements[i + 1];
+			break;
+		}
+	}
+
+	if (!btns_desc) {
+		dev_err(dev, "ACPI Button Descriptors not found\n");
+		button_info = ERR_PTR(-ENODEV);
+		goto out;
+	}
+
+	/* The first package describes the collection */
+	el0 = &btns_desc->package.elements[0];
+	if (el0->type == ACPI_TYPE_PACKAGE &&
+	    el0->package.count == 5 &&
+	    /* First byte should be 0 (collection) */
+	    soc_button_get_acpi_object_int(&el0->package.elements[0]) == 0 &&
+	    /* Third byte should be 0 (top level collection) */
+	    soc_button_get_acpi_object_int(&el0->package.elements[2]) == 0) {
+		collection_uid = soc_button_get_acpi_object_int(
+						&el0->package.elements[1]);
+	}
+	if (collection_uid == -1) {
+		dev_err(dev, "Invalid Button Collection Descriptor\n");
+		button_info = ERR_PTR(-ENODEV);
+		goto out;
+	}
+
+	/* There are package.count - 1 buttons + 1 terminating empty entry */
+	button_info = devm_kcalloc(dev, btns_desc->package.count,
+				   sizeof(*button_info), GFP_KERNEL);
+	if (!button_info) {
+		button_info = ERR_PTR(-ENOMEM);
+		goto out;
+	}
+
+	/* Parse the button descriptors */
+	for (i = 1, btn = 0; i < btns_desc->package.count; i++, btn++) {
+		if (soc_button_parse_btn_desc(dev,
+					      &btns_desc->package.elements[i],
+					      collection_uid,
+					      &button_info[btn])) {
+			button_info = ERR_PTR(-ENODEV);
+			goto out;
+		}
+	}
+
+out:
+	kfree(buf.pointer);
+	return button_info;
+}
+
+static int soc_button_remove(struct platform_device *pdev)
+{
+	struct soc_button_data *priv = platform_get_drvdata(pdev);
+
+	int i;
+
+	for (i = 0; i < BUTTON_TYPES; i++)
+		if (priv->children[i])
+			platform_device_unregister(priv->children[i]);
+
+	return 0;
+}
+
+static int soc_button_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	const struct soc_device_data *device_data;
+	const struct soc_button_info *button_info;
+	struct soc_button_data *priv;
+	struct platform_device *pd;
+	int i;
+	int error;
+
+	device_data = acpi_device_get_match_data(dev);
+	if (device_data && device_data->check) {
+		error = device_data->check(dev);
+		if (error)
+			return error;
+	}
+
+	if (device_data && device_data->button_info) {
+		button_info = device_data->button_info;
+	} else {
+		button_info = soc_button_get_button_info(dev);
+		if (IS_ERR(button_info))
+			return PTR_ERR(button_info);
+	}
+
+	error = gpiod_count(dev, NULL);
+	if (error < 0) {
+		dev_dbg(dev, "no GPIO attached, ignoring...\n");
+		return -ENODEV;
+	}
+
+	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	platform_set_drvdata(pdev, priv);
+
+	for (i = 0; i < BUTTON_TYPES; i++) {
+		pd = soc_button_device_create(pdev, button_info, i == 0);
+		if (IS_ERR(pd)) {
+			error = PTR_ERR(pd);
+			if (error != -ENODEV) {
+				soc_button_remove(pdev);
+				return error;
+			}
+			continue;
+		}
+
+		priv->children[i] = pd;
+	}
+
+	if (!priv->children[0] && !priv->children[1])
+		return -ENODEV;
+
+	if (!device_data || !device_data->button_info)
+		devm_kfree(dev, button_info);
+
+	return 0;
+}
+
+/*
+ * Definition of buttons on the tablet. The ACPI index of each button
+ * is defined in section 2.8.7.2 of "Windows ACPI Design Guide for SoC
+ * Platforms"
+ */
+static const struct soc_button_info soc_button_PNP0C40[] = {
+	{ "power", 0, EV_KEY, KEY_POWER, false, true, true },
+	{ "home", 1, EV_KEY, KEY_LEFTMETA, false, true, true },
+	{ "volume_up", 2, EV_KEY, KEY_VOLUMEUP, true, false, true },
+	{ "volume_down", 3, EV_KEY, KEY_VOLUMEDOWN, true, false, true },
+	{ "rotation_lock", 4, EV_KEY, KEY_ROTATE_LOCK_TOGGLE, false, false, true },
+	{ }
+};
+
+static const struct soc_device_data soc_device_PNP0C40 = {
+	.button_info = soc_button_PNP0C40,
+};
+
+static const struct soc_button_info soc_button_INT33D3[] = {
+	{ "tablet_mode", 0, EV_SW, SW_TABLET_MODE, false, false, false },
+	{ }
+};
+
+static const struct soc_device_data soc_device_INT33D3 = {
+	.button_info = soc_button_INT33D3,
+};
+
+/*
+ * Button info for Microsoft Surface 3 (non pro), this is indentical to
+ * the PNP0C40 info except that the home button is active-high.
+ *
+ * The Surface 3 Pro also has a MSHW0028 ACPI device, but that uses a custom
+ * version of the drivers/platform/x86/intel/hid.c 5 button array ACPI API
+ * instead. A check() callback is not necessary though as the Surface 3 Pro
+ * MSHW0028 ACPI device's resource table does not contain any GPIOs.
+ */
+static const struct soc_button_info soc_button_MSHW0028[] = {
+	{ "power", 0, EV_KEY, KEY_POWER, false, true, true },
+	{ "home", 1, EV_KEY, KEY_LEFTMETA, false, true, false },
+	{ "volume_up", 2, EV_KEY, KEY_VOLUMEUP, true, false, true },
+	{ "volume_down", 3, EV_KEY, KEY_VOLUMEDOWN, true, false, true },
+	{ }
+};
+
+static const struct soc_device_data soc_device_MSHW0028 = {
+	.button_info = soc_button_MSHW0028,
+};
+
+/*
+ * Special device check for Surface Book 2 and Surface Pro (2017).
+ * Both, the Surface Pro 4 (surfacepro3_button.c) and the above mentioned
+ * devices use MSHW0040 for power and volume buttons, however the way they
+ * have to be addressed differs. Make sure that we only load this drivers
+ * for the correct devices by checking the OEM Platform Revision provided by
+ * the _DSM method.
+ */
+#define MSHW0040_DSM_REVISION		0x01
+#define MSHW0040_DSM_GET_OMPR		0x02	// get OEM Platform Revision
+static const guid_t MSHW0040_DSM_UUID =
+	GUID_INIT(0x6fd05c69, 0xcde3, 0x49f4, 0x95, 0xed, 0xab, 0x16, 0x65,
+		  0x49, 0x80, 0x35);
+
+static int soc_device_check_MSHW0040(struct device *dev)
+{
+	acpi_handle handle = ACPI_HANDLE(dev);
+	union acpi_object *result;
+	u64 oem_platform_rev = 0;	// valid revisions are nonzero
+
+	// get OEM platform revision
+	result = acpi_evaluate_dsm_typed(handle, &MSHW0040_DSM_UUID,
+					 MSHW0040_DSM_REVISION,
+					 MSHW0040_DSM_GET_OMPR, NULL,
+					 ACPI_TYPE_INTEGER);
+
+	if (result) {
+		oem_platform_rev = result->integer.value;
+		ACPI_FREE(result);
+	}
+
+	/*
+	 * If the revision is zero here, the _DSM evaluation has failed. This
+	 * indicates that we have a Pro 4 or Book 1 and this driver should not
+	 * be used.
+	 */
+	if (oem_platform_rev == 0)
+		return -ENODEV;
+
+	dev_dbg(dev, "OEM Platform Revision %llu\n", oem_platform_rev);
+
+	return 0;
+}
+
+/*
+ * Button infos for Microsoft Surface Book 2 and Surface Pro (2017).
+ * Obtained from DSDT/testing.
+ */
+static const struct soc_button_info soc_button_MSHW0040[] = {
+	{ "power", 0, EV_KEY, KEY_POWER, false, true, true },
+	{ "volume_up", 2, EV_KEY, KEY_VOLUMEUP, true, false, true },
+	{ "volume_down", 4, EV_KEY, KEY_VOLUMEDOWN, true, false, true },
+	{ }
+};
+
+static const struct soc_device_data soc_device_MSHW0040 = {
+	.button_info = soc_button_MSHW0040,
+	.check = soc_device_check_MSHW0040,
+};
+
+static const struct acpi_device_id soc_button_acpi_match[] = {
+	{ "PNP0C40", (unsigned long)&soc_device_PNP0C40 },
+	{ "INT33D3", (unsigned long)&soc_device_INT33D3 },
+	{ "ID9001", (unsigned long)&soc_device_INT33D3 },
+	{ "ACPI0011", 0 },
+
+	/* Microsoft Surface Devices (3th, 5th and 6th generation) */
+	{ "MSHW0028", (unsigned long)&soc_device_MSHW0028 },
+	{ "MSHW0040", (unsigned long)&soc_device_MSHW0040 },
+
+	{ }
+};
+
+MODULE_DEVICE_TABLE(acpi, soc_button_acpi_match);
+
+static struct platform_driver soc_button_driver = {
+	.probe          = soc_button_probe,
+	.remove		= soc_button_remove,
+	.driver		= {
+		.name = KBUILD_MODNAME,
+		.acpi_match_table = ACPI_PTR(soc_button_acpi_match),
+	},
+};
+module_platform_driver(soc_button_driver);
+
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/misc/sparcspkr.c b/drivers/input/misc/sparcspkr.c
new file mode 100644
index 000000000..cdcb7737c
--- /dev/null
+++ b/drivers/input/misc/sparcspkr.c
@@ -0,0 +1,366 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ *  Driver for PC-speaker like devices found on various Sparc systems.
+ *
+ *  Copyright (c) 2002 Vojtech Pavlik
+ *  Copyright (c) 2002, 2006, 2008 David S. Miller (davem@davemloft.net)
+ */
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/input.h>
+#include <linux/of_device.h>
+#include <linux/slab.h>
+
+#include <asm/io.h>
+
+MODULE_AUTHOR("David S. Miller <davem@davemloft.net>");
+MODULE_DESCRIPTION("Sparc Speaker beeper driver");
+MODULE_LICENSE("GPL");
+
+struct grover_beep_info {
+	void __iomem	*freq_regs;
+	void __iomem	*enable_reg;
+};
+
+struct bbc_beep_info {
+	u32		clock_freq;
+	void __iomem	*regs;
+};
+
+struct sparcspkr_state {
+	const char		*name;
+	int (*event)(struct input_dev *dev, unsigned int type, unsigned int code, int value);
+	spinlock_t		lock;
+	struct input_dev	*input_dev;
+	union {
+		struct grover_beep_info grover;
+		struct bbc_beep_info bbc;
+	} u;
+};
+
+static u32 bbc_count_to_reg(struct bbc_beep_info *info, unsigned int count)
+{
+	u32 val, clock_freq = info->clock_freq;
+	int i;
+
+	if (!count)
+		return 0;
+
+	if (count <= clock_freq >> 20)
+		return 1 << 18;
+
+	if (count >= clock_freq >> 12)
+		return 1 << 10;
+
+	val = 1 << 18;
+	for (i = 19; i >= 11; i--) {
+		val >>= 1;
+		if (count <= clock_freq >> i)
+			break;
+	}
+
+	return val;
+}
+
+static int bbc_spkr_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
+{
+	struct sparcspkr_state *state = dev_get_drvdata(dev->dev.parent);
+	struct bbc_beep_info *info = &state->u.bbc;
+	unsigned int count = 0;
+	unsigned long flags;
+
+	if (type != EV_SND)
+		return -1;
+
+	switch (code) {
+		case SND_BELL: if (value) value = 1000;
+		case SND_TONE: break;
+		default: return -1;
+	}
+
+	if (value > 20 && value < 32767)
+		count = 1193182 / value;
+
+	count = bbc_count_to_reg(info, count);
+
+	spin_lock_irqsave(&state->lock, flags);
+
+	if (count) {
+		sbus_writeb(0x01,                 info->regs + 0);
+		sbus_writeb(0x00,                 info->regs + 2);
+		sbus_writeb((count >> 16) & 0xff, info->regs + 3);
+		sbus_writeb((count >>  8) & 0xff, info->regs + 4);
+		sbus_writeb(0x00,                 info->regs + 5);
+	} else {
+		sbus_writeb(0x00,                 info->regs + 0);
+	}
+
+	spin_unlock_irqrestore(&state->lock, flags);
+
+	return 0;
+}
+
+static int grover_spkr_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
+{
+	struct sparcspkr_state *state = dev_get_drvdata(dev->dev.parent);
+	struct grover_beep_info *info = &state->u.grover;
+	unsigned int count = 0;
+	unsigned long flags;
+
+	if (type != EV_SND)
+		return -1;
+
+	switch (code) {
+		case SND_BELL: if (value) value = 1000;
+		case SND_TONE: break;
+		default: return -1;
+	}
+
+	if (value > 20 && value < 32767)
+		count = 1193182 / value;
+
+	spin_lock_irqsave(&state->lock, flags);
+
+	if (count) {
+		/* enable counter 2 */
+		sbus_writeb(sbus_readb(info->enable_reg) | 3, info->enable_reg);
+		/* set command for counter 2, 2 byte write */
+		sbus_writeb(0xB6, info->freq_regs + 1);
+		/* select desired HZ */
+		sbus_writeb(count & 0xff, info->freq_regs + 0);
+		sbus_writeb((count >> 8) & 0xff, info->freq_regs + 0);
+	} else {
+		/* disable counter 2 */
+		sbus_writeb(sbus_readb(info->enable_reg) & 0xFC, info->enable_reg);
+	}
+
+	spin_unlock_irqrestore(&state->lock, flags);
+
+	return 0;
+}
+
+static int sparcspkr_probe(struct device *dev)
+{
+	struct sparcspkr_state *state = dev_get_drvdata(dev);
+	struct input_dev *input_dev;
+	int error;
+
+	input_dev = input_allocate_device();
+	if (!input_dev)
+		return -ENOMEM;
+
+	input_dev->name = state->name;
+	input_dev->phys = "sparc/input0";
+	input_dev->id.bustype = BUS_ISA;
+	input_dev->id.vendor = 0x001f;
+	input_dev->id.product = 0x0001;
+	input_dev->id.version = 0x0100;
+	input_dev->dev.parent = dev;
+
+	input_dev->evbit[0] = BIT_MASK(EV_SND);
+	input_dev->sndbit[0] = BIT_MASK(SND_BELL) | BIT_MASK(SND_TONE);
+
+	input_dev->event = state->event;
+
+	error = input_register_device(input_dev);
+	if (error) {
+		input_free_device(input_dev);
+		return error;
+	}
+
+	state->input_dev = input_dev;
+
+	return 0;
+}
+
+static void sparcspkr_shutdown(struct platform_device *dev)
+{
+	struct sparcspkr_state *state = platform_get_drvdata(dev);
+	struct input_dev *input_dev = state->input_dev;
+
+	/* turn off the speaker */
+	state->event(input_dev, EV_SND, SND_BELL, 0);
+}
+
+static int bbc_beep_probe(struct platform_device *op)
+{
+	struct sparcspkr_state *state;
+	struct bbc_beep_info *info;
+	struct device_node *dp;
+	int err = -ENOMEM;
+
+	state = kzalloc(sizeof(*state), GFP_KERNEL);
+	if (!state)
+		goto out_err;
+
+	state->name = "Sparc BBC Speaker";
+	state->event = bbc_spkr_event;
+	spin_lock_init(&state->lock);
+
+	dp = of_find_node_by_path("/");
+	err = -ENODEV;
+	if (!dp)
+		goto out_free;
+
+	info = &state->u.bbc;
+	info->clock_freq = of_getintprop_default(dp, "clock-frequency", 0);
+	of_node_put(dp);
+	if (!info->clock_freq)
+		goto out_free;
+
+	info->regs = of_ioremap(&op->resource[0], 0, 6, "bbc beep");
+	if (!info->regs)
+		goto out_free;
+
+	platform_set_drvdata(op, state);
+
+	err = sparcspkr_probe(&op->dev);
+	if (err)
+		goto out_clear_drvdata;
+
+	return 0;
+
+out_clear_drvdata:
+	of_iounmap(&op->resource[0], info->regs, 6);
+
+out_free:
+	kfree(state);
+out_err:
+	return err;
+}
+
+static int bbc_remove(struct platform_device *op)
+{
+	struct sparcspkr_state *state = platform_get_drvdata(op);
+	struct input_dev *input_dev = state->input_dev;
+	struct bbc_beep_info *info = &state->u.bbc;
+
+	/* turn off the speaker */
+	state->event(input_dev, EV_SND, SND_BELL, 0);
+
+	input_unregister_device(input_dev);
+
+	of_iounmap(&op->resource[0], info->regs, 6);
+
+	kfree(state);
+
+	return 0;
+}
+
+static const struct of_device_id bbc_beep_match[] = {
+	{
+		.name = "beep",
+		.compatible = "SUNW,bbc-beep",
+	},
+	{},
+};
+MODULE_DEVICE_TABLE(of, bbc_beep_match);
+
+static struct platform_driver bbc_beep_driver = {
+	.driver = {
+		.name = "bbcbeep",
+		.of_match_table = bbc_beep_match,
+	},
+	.probe		= bbc_beep_probe,
+	.remove		= bbc_remove,
+	.shutdown	= sparcspkr_shutdown,
+};
+
+static int grover_beep_probe(struct platform_device *op)
+{
+	struct sparcspkr_state *state;
+	struct grover_beep_info *info;
+	int err = -ENOMEM;
+
+	state = kzalloc(sizeof(*state), GFP_KERNEL);
+	if (!state)
+		goto out_err;
+
+	state->name = "Sparc Grover Speaker";
+	state->event = grover_spkr_event;
+	spin_lock_init(&state->lock);
+
+	info = &state->u.grover;
+	info->freq_regs = of_ioremap(&op->resource[2], 0, 2, "grover beep freq");
+	if (!info->freq_regs)
+		goto out_free;
+
+	info->enable_reg = of_ioremap(&op->resource[3], 0, 1, "grover beep enable");
+	if (!info->enable_reg)
+		goto out_unmap_freq_regs;
+
+	platform_set_drvdata(op, state);
+
+	err = sparcspkr_probe(&op->dev);
+	if (err)
+		goto out_clear_drvdata;
+
+	return 0;
+
+out_clear_drvdata:
+	of_iounmap(&op->resource[3], info->enable_reg, 1);
+
+out_unmap_freq_regs:
+	of_iounmap(&op->resource[2], info->freq_regs, 2);
+out_free:
+	kfree(state);
+out_err:
+	return err;
+}
+
+static int grover_remove(struct platform_device *op)
+{
+	struct sparcspkr_state *state = platform_get_drvdata(op);
+	struct grover_beep_info *info = &state->u.grover;
+	struct input_dev *input_dev = state->input_dev;
+
+	/* turn off the speaker */
+	state->event(input_dev, EV_SND, SND_BELL, 0);
+
+	input_unregister_device(input_dev);
+
+	of_iounmap(&op->resource[3], info->enable_reg, 1);
+	of_iounmap(&op->resource[2], info->freq_regs, 2);
+
+	kfree(state);
+
+	return 0;
+}
+
+static const struct of_device_id grover_beep_match[] = {
+	{
+		.name = "beep",
+		.compatible = "SUNW,smbus-beep",
+	},
+	{},
+};
+MODULE_DEVICE_TABLE(of, grover_beep_match);
+
+static struct platform_driver grover_beep_driver = {
+	.driver = {
+		.name = "groverbeep",
+		.of_match_table = grover_beep_match,
+	},
+	.probe		= grover_beep_probe,
+	.remove		= grover_remove,
+	.shutdown	= sparcspkr_shutdown,
+};
+
+static struct platform_driver * const drivers[] = {
+	&bbc_beep_driver,
+	&grover_beep_driver,
+};
+
+static int __init sparcspkr_init(void)
+{
+	return platform_register_drivers(drivers, ARRAY_SIZE(drivers));
+}
+
+static void __exit sparcspkr_exit(void)
+{
+	platform_unregister_drivers(drivers, ARRAY_SIZE(drivers));
+}
+
+module_init(sparcspkr_init);
+module_exit(sparcspkr_exit);
diff --git a/drivers/input/misc/stpmic1_onkey.c b/drivers/input/misc/stpmic1_onkey.c
new file mode 100644
index 000000000..d8dc2f2f8
--- /dev/null
+++ b/drivers/input/misc/stpmic1_onkey.c
@@ -0,0 +1,192 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (C) STMicroelectronics 2018
+// Author: Pascal Paillet <p.paillet@st.com> for STMicroelectronics.
+
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/mfd/stpmic1.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/property.h>
+#include <linux/regmap.h>
+
+/**
+ * struct stpmic1_onkey - OnKey data
+ * @input_dev:		pointer to input device
+ * @irq_falling:	irq that we are hooked on to
+ * @irq_rising:		irq that we are hooked on to
+ */
+struct stpmic1_onkey {
+	struct input_dev *input_dev;
+	int irq_falling;
+	int irq_rising;
+};
+
+static irqreturn_t onkey_falling_irq(int irq, void *ponkey)
+{
+	struct stpmic1_onkey *onkey = ponkey;
+	struct input_dev *input_dev = onkey->input_dev;
+
+	input_report_key(input_dev, KEY_POWER, 1);
+	pm_wakeup_event(input_dev->dev.parent, 0);
+	input_sync(input_dev);
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t onkey_rising_irq(int irq, void *ponkey)
+{
+	struct stpmic1_onkey *onkey = ponkey;
+	struct input_dev *input_dev = onkey->input_dev;
+
+	input_report_key(input_dev, KEY_POWER, 0);
+	pm_wakeup_event(input_dev->dev.parent, 0);
+	input_sync(input_dev);
+
+	return IRQ_HANDLED;
+}
+
+static int stpmic1_onkey_probe(struct platform_device *pdev)
+{
+	struct stpmic1 *pmic = dev_get_drvdata(pdev->dev.parent);
+	struct device *dev = &pdev->dev;
+	struct input_dev *input_dev;
+	struct stpmic1_onkey *onkey;
+	unsigned int val, reg = 0;
+	int error;
+
+	onkey = devm_kzalloc(dev, sizeof(*onkey), GFP_KERNEL);
+	if (!onkey)
+		return -ENOMEM;
+
+	onkey->irq_falling = platform_get_irq_byname(pdev, "onkey-falling");
+	if (onkey->irq_falling < 0)
+		return onkey->irq_falling;
+
+	onkey->irq_rising = platform_get_irq_byname(pdev, "onkey-rising");
+	if (onkey->irq_rising < 0)
+		return onkey->irq_rising;
+
+	if (!device_property_read_u32(dev, "power-off-time-sec", &val)) {
+		if (val > 0 && val <= 16) {
+			dev_dbg(dev, "power-off-time=%d seconds\n", val);
+			reg |= PONKEY_PWR_OFF;
+			reg |= ((16 - val) & PONKEY_TURNOFF_TIMER_MASK);
+		} else {
+			dev_err(dev, "power-off-time-sec out of range\n");
+			return -EINVAL;
+		}
+	}
+
+	if (device_property_present(dev, "st,onkey-clear-cc-flag"))
+		reg |= PONKEY_CC_FLAG_CLEAR;
+
+	error = regmap_update_bits(pmic->regmap, PKEY_TURNOFF_CR,
+				   PONKEY_TURNOFF_MASK, reg);
+	if (error) {
+		dev_err(dev, "PKEY_TURNOFF_CR write failed: %d\n", error);
+		return error;
+	}
+
+	if (device_property_present(dev, "st,onkey-pu-inactive")) {
+		error = regmap_update_bits(pmic->regmap, PADS_PULL_CR,
+					   PONKEY_PU_INACTIVE,
+					   PONKEY_PU_INACTIVE);
+		if (error) {
+			dev_err(dev, "ONKEY Pads configuration failed: %d\n",
+				error);
+			return error;
+		}
+	}
+
+	input_dev = devm_input_allocate_device(dev);
+	if (!input_dev) {
+		dev_err(dev, "Can't allocate Pwr Onkey Input Device\n");
+		return -ENOMEM;
+	}
+
+	input_dev->name = "pmic_onkey";
+	input_dev->phys = "pmic_onkey/input0";
+
+	input_set_capability(input_dev, EV_KEY, KEY_POWER);
+
+	onkey->input_dev = input_dev;
+
+	/* interrupt is nested in a thread */
+	error = devm_request_threaded_irq(dev, onkey->irq_falling, NULL,
+					  onkey_falling_irq, IRQF_ONESHOT,
+					  dev_name(dev), onkey);
+	if (error) {
+		dev_err(dev, "Can't get IRQ Onkey Falling: %d\n", error);
+		return error;
+	}
+
+	error = devm_request_threaded_irq(dev, onkey->irq_rising, NULL,
+					  onkey_rising_irq, IRQF_ONESHOT,
+					  dev_name(dev), onkey);
+	if (error) {
+		dev_err(dev, "Can't get IRQ Onkey Rising: %d\n", error);
+		return error;
+	}
+
+	error = input_register_device(input_dev);
+	if (error) {
+		dev_err(dev, "Can't register power button: %d\n", error);
+		return error;
+	}
+
+	platform_set_drvdata(pdev, onkey);
+	device_init_wakeup(dev, true);
+
+	return 0;
+}
+
+static int __maybe_unused stpmic1_onkey_suspend(struct device *dev)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct stpmic1_onkey *onkey = platform_get_drvdata(pdev);
+
+	if (device_may_wakeup(dev)) {
+		enable_irq_wake(onkey->irq_falling);
+		enable_irq_wake(onkey->irq_rising);
+	}
+	return 0;
+}
+
+static int __maybe_unused stpmic1_onkey_resume(struct device *dev)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct stpmic1_onkey *onkey = platform_get_drvdata(pdev);
+
+	if (device_may_wakeup(dev)) {
+		disable_irq_wake(onkey->irq_falling);
+		disable_irq_wake(onkey->irq_rising);
+	}
+	return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(stpmic1_onkey_pm,
+			 stpmic1_onkey_suspend,
+			 stpmic1_onkey_resume);
+
+static const struct of_device_id of_stpmic1_onkey_match[] = {
+	{ .compatible = "st,stpmic1-onkey" },
+	{ },
+};
+
+MODULE_DEVICE_TABLE(of, of_stpmic1_onkey_match);
+
+static struct platform_driver stpmic1_onkey_driver = {
+	.probe	= stpmic1_onkey_probe,
+	.driver	= {
+		.name	= "stpmic1_onkey",
+		.of_match_table = of_match_ptr(of_stpmic1_onkey_match),
+		.pm	= &stpmic1_onkey_pm,
+	},
+};
+module_platform_driver(stpmic1_onkey_driver);
+
+MODULE_DESCRIPTION("Onkey driver for STPMIC1");
+MODULE_AUTHOR("Pascal Paillet <p.paillet@st.com>");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/input/misc/tps65218-pwrbutton.c b/drivers/input/misc/tps65218-pwrbutton.c
new file mode 100644
index 000000000..fc450fce0
--- /dev/null
+++ b/drivers/input/misc/tps65218-pwrbutton.c
@@ -0,0 +1,160 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Texas Instruments' TPS65217 and TPS65218 Power Button Input Driver
+ *
+ * Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com/
+ * Author: Felipe Balbi <balbi@ti.com>
+ * Author: Marcin Niestroj <m.niestroj@grinn-global.com>
+ */
+
+#include <linux/init.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/mfd/tps65217.h>
+#include <linux/mfd/tps65218.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+
+struct tps6521x_data {
+	unsigned int reg_status;
+	unsigned int pb_mask;
+	const char *name;
+};
+
+static const struct tps6521x_data tps65217_data = {
+	.reg_status = TPS65217_REG_STATUS,
+	.pb_mask = TPS65217_STATUS_PB,
+	.name = "tps65217_pwrbutton",
+};
+
+static const struct tps6521x_data tps65218_data = {
+	.reg_status = TPS65218_REG_STATUS,
+	.pb_mask = TPS65218_STATUS_PB_STATE,
+	.name = "tps65218_pwrbutton",
+};
+
+struct tps6521x_pwrbutton {
+	struct device *dev;
+	struct regmap *regmap;
+	struct input_dev *idev;
+	const struct tps6521x_data *data;
+	char phys[32];
+};
+
+static const struct of_device_id of_tps6521x_pb_match[] = {
+	{ .compatible = "ti,tps65217-pwrbutton", .data = &tps65217_data },
+	{ .compatible = "ti,tps65218-pwrbutton", .data = &tps65218_data },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, of_tps6521x_pb_match);
+
+static irqreturn_t tps6521x_pb_irq(int irq, void *_pwr)
+{
+	struct tps6521x_pwrbutton *pwr = _pwr;
+	const struct tps6521x_data *tps_data = pwr->data;
+	unsigned int reg;
+	int error;
+
+	error = regmap_read(pwr->regmap, tps_data->reg_status, &reg);
+	if (error) {
+		dev_err(pwr->dev, "can't read register: %d\n", error);
+		goto out;
+	}
+
+	if (reg & tps_data->pb_mask) {
+		input_report_key(pwr->idev, KEY_POWER, 1);
+		pm_wakeup_event(pwr->dev, 0);
+	} else {
+		input_report_key(pwr->idev, KEY_POWER, 0);
+	}
+
+	input_sync(pwr->idev);
+
+out:
+	return IRQ_HANDLED;
+}
+
+static int tps6521x_pb_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct tps6521x_pwrbutton *pwr;
+	struct input_dev *idev;
+	const struct of_device_id *match;
+	int error;
+	int irq;
+
+	match = of_match_node(of_tps6521x_pb_match, dev->of_node);
+	if (!match)
+		return -ENXIO;
+
+	pwr = devm_kzalloc(dev, sizeof(*pwr), GFP_KERNEL);
+	if (!pwr)
+		return -ENOMEM;
+
+	pwr->data = match->data;
+
+	idev = devm_input_allocate_device(dev);
+	if (!idev)
+		return -ENOMEM;
+
+	idev->name = pwr->data->name;
+	snprintf(pwr->phys, sizeof(pwr->phys), "%s/input0",
+		pwr->data->name);
+	idev->phys = pwr->phys;
+	idev->dev.parent = dev;
+	idev->id.bustype = BUS_I2C;
+
+	input_set_capability(idev, EV_KEY, KEY_POWER);
+
+	pwr->regmap = dev_get_regmap(dev->parent, NULL);
+	pwr->dev = dev;
+	pwr->idev = idev;
+	device_init_wakeup(dev, true);
+
+	irq = platform_get_irq(pdev, 0);
+	if (irq < 0)
+		return -EINVAL;
+
+	error = devm_request_threaded_irq(dev, irq, NULL, tps6521x_pb_irq,
+					  IRQF_TRIGGER_RISING |
+						IRQF_TRIGGER_FALLING |
+						IRQF_ONESHOT,
+					  pwr->data->name, pwr);
+	if (error) {
+		dev_err(dev, "failed to request IRQ #%d: %d\n", irq, error);
+		return error;
+	}
+
+	error= input_register_device(idev);
+	if (error) {
+		dev_err(dev, "Can't register power button: %d\n", error);
+		return error;
+	}
+
+	return 0;
+}
+
+static const struct platform_device_id tps6521x_pwrbtn_id_table[] = {
+	{ "tps65218-pwrbutton", },
+	{ "tps65217-pwrbutton", },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(platform, tps6521x_pwrbtn_id_table);
+
+static struct platform_driver tps6521x_pb_driver = {
+	.probe	= tps6521x_pb_probe,
+	.driver	= {
+		.name	= "tps6521x_pwrbutton",
+		.of_match_table = of_tps6521x_pb_match,
+	},
+	.id_table = tps6521x_pwrbtn_id_table,
+};
+module_platform_driver(tps6521x_pb_driver);
+
+MODULE_DESCRIPTION("TPS6521X Power Button");
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
diff --git a/drivers/input/misc/twl4030-pwrbutton.c b/drivers/input/misc/twl4030-pwrbutton.c
new file mode 100644
index 000000000..e3ee0638f
--- /dev/null
+++ b/drivers/input/misc/twl4030-pwrbutton.c
@@ -0,0 +1,115 @@
+/**
+ * twl4030-pwrbutton.c - TWL4030 Power Button Input Driver
+ *
+ * Copyright (C) 2008-2009 Nokia Corporation
+ *
+ * Written by Peter De Schrijver <peter.de-schrijver@nokia.com>
+ * Several fixes by Felipe Balbi <felipe.balbi@nokia.com>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License. See the file "COPYING" in the main directory of this
+ * archive for more details.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/mfd/twl.h>
+
+#define PWR_PWRON_IRQ (1 << 0)
+
+#define STS_HW_CONDITIONS 0xf
+
+static irqreturn_t powerbutton_irq(int irq, void *_pwr)
+{
+	struct input_dev *pwr = _pwr;
+	int err;
+	u8 value;
+
+	err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &value, STS_HW_CONDITIONS);
+	if (!err)  {
+		pm_wakeup_event(pwr->dev.parent, 0);
+		input_report_key(pwr, KEY_POWER, value & PWR_PWRON_IRQ);
+		input_sync(pwr);
+	} else {
+		dev_err(pwr->dev.parent, "twl4030: i2c error %d while reading"
+			" TWL4030 PM_MASTER STS_HW_CONDITIONS register\n", err);
+	}
+
+	return IRQ_HANDLED;
+}
+
+static int twl4030_pwrbutton_probe(struct platform_device *pdev)
+{
+	struct input_dev *pwr;
+	int irq = platform_get_irq(pdev, 0);
+	int err;
+
+	pwr = devm_input_allocate_device(&pdev->dev);
+	if (!pwr) {
+		dev_err(&pdev->dev, "Can't allocate power button\n");
+		return -ENOMEM;
+	}
+
+	input_set_capability(pwr, EV_KEY, KEY_POWER);
+	pwr->name = "twl4030_pwrbutton";
+	pwr->phys = "twl4030_pwrbutton/input0";
+	pwr->dev.parent = &pdev->dev;
+
+	err = devm_request_threaded_irq(&pdev->dev, irq, NULL, powerbutton_irq,
+			IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING |
+			IRQF_ONESHOT,
+			"twl4030_pwrbutton", pwr);
+	if (err < 0) {
+		dev_err(&pdev->dev, "Can't get IRQ for pwrbutton: %d\n", err);
+		return err;
+	}
+
+	err = input_register_device(pwr);
+	if (err) {
+		dev_err(&pdev->dev, "Can't register power button: %d\n", err);
+		return err;
+	}
+
+	device_init_wakeup(&pdev->dev, true);
+
+	return 0;
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id twl4030_pwrbutton_dt_match_table[] = {
+       { .compatible = "ti,twl4030-pwrbutton" },
+       {},
+};
+MODULE_DEVICE_TABLE(of, twl4030_pwrbutton_dt_match_table);
+#endif
+
+static struct platform_driver twl4030_pwrbutton_driver = {
+	.probe		= twl4030_pwrbutton_probe,
+	.driver		= {
+		.name	= "twl4030_pwrbutton",
+		.of_match_table = of_match_ptr(twl4030_pwrbutton_dt_match_table),
+	},
+};
+module_platform_driver(twl4030_pwrbutton_driver);
+
+MODULE_ALIAS("platform:twl4030_pwrbutton");
+MODULE_DESCRIPTION("Triton2 Power Button");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Peter De Schrijver <peter.de-schrijver@nokia.com>");
+MODULE_AUTHOR("Felipe Balbi <felipe.balbi@nokia.com>");
+
diff --git a/drivers/input/misc/twl4030-vibra.c b/drivers/input/misc/twl4030-vibra.c
new file mode 100644
index 000000000..5619996da
--- /dev/null
+++ b/drivers/input/misc/twl4030-vibra.c
@@ -0,0 +1,245 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * twl4030-vibra.c - TWL4030 Vibrator driver
+ *
+ * Copyright (C) 2008-2010 Nokia Corporation
+ *
+ * Written by Henrik Saari <henrik.saari@nokia.com>
+ * Updates by Felipe Balbi <felipe.balbi@nokia.com>
+ * Input by Jari Vanhala <ext-jari.vanhala@nokia.com>
+ */
+
+#include <linux/module.h>
+#include <linux/jiffies.h>
+#include <linux/platform_device.h>
+#include <linux/of.h>
+#include <linux/workqueue.h>
+#include <linux/mfd/twl.h>
+#include <linux/mfd/twl4030-audio.h>
+#include <linux/input.h>
+#include <linux/slab.h>
+
+/* MODULE ID2 */
+#define LEDEN		0x00
+
+/* ForceFeedback */
+#define EFFECT_DIR_180_DEG	0x8000 /* range is 0 - 0xFFFF */
+
+struct vibra_info {
+	struct device		*dev;
+	struct input_dev	*input_dev;
+
+	struct work_struct	play_work;
+
+	bool			enabled;
+	int			speed;
+	int			direction;
+
+	bool			coexist;
+};
+
+static void vibra_disable_leds(void)
+{
+	u8 reg;
+
+	/* Disable LEDA & LEDB, cannot be used with vibra (PWM) */
+	twl_i2c_read_u8(TWL4030_MODULE_LED, &reg, LEDEN);
+	reg &= ~0x03;
+	twl_i2c_write_u8(TWL4030_MODULE_LED, LEDEN, reg);
+}
+
+/* Powers H-Bridge and enables audio clk */
+static void vibra_enable(struct vibra_info *info)
+{
+	u8 reg;
+
+	twl4030_audio_enable_resource(TWL4030_AUDIO_RES_POWER);
+
+	/* turn H-Bridge on */
+	twl_i2c_read_u8(TWL4030_MODULE_AUDIO_VOICE,
+			&reg, TWL4030_REG_VIBRA_CTL);
+	twl_i2c_write_u8(TWL4030_MODULE_AUDIO_VOICE,
+			 (reg | TWL4030_VIBRA_EN), TWL4030_REG_VIBRA_CTL);
+
+	twl4030_audio_enable_resource(TWL4030_AUDIO_RES_APLL);
+
+	info->enabled = true;
+}
+
+static void vibra_disable(struct vibra_info *info)
+{
+	u8 reg;
+
+	/* Power down H-Bridge */
+	twl_i2c_read_u8(TWL4030_MODULE_AUDIO_VOICE,
+			&reg, TWL4030_REG_VIBRA_CTL);
+	twl_i2c_write_u8(TWL4030_MODULE_AUDIO_VOICE,
+			 (reg & ~TWL4030_VIBRA_EN), TWL4030_REG_VIBRA_CTL);
+
+	twl4030_audio_disable_resource(TWL4030_AUDIO_RES_APLL);
+	twl4030_audio_disable_resource(TWL4030_AUDIO_RES_POWER);
+
+	info->enabled = false;
+}
+
+static void vibra_play_work(struct work_struct *work)
+{
+	struct vibra_info *info = container_of(work,
+			struct vibra_info, play_work);
+	int dir;
+	int pwm;
+	u8 reg;
+
+	dir = info->direction;
+	pwm = info->speed;
+
+	twl_i2c_read_u8(TWL4030_MODULE_AUDIO_VOICE,
+			&reg, TWL4030_REG_VIBRA_CTL);
+	if (pwm && (!info->coexist || !(reg & TWL4030_VIBRA_SEL))) {
+
+		if (!info->enabled)
+			vibra_enable(info);
+
+		/* set vibra rotation direction */
+		twl_i2c_read_u8(TWL4030_MODULE_AUDIO_VOICE,
+				&reg, TWL4030_REG_VIBRA_CTL);
+		reg = (dir) ? (reg | TWL4030_VIBRA_DIR) :
+			(reg & ~TWL4030_VIBRA_DIR);
+		twl_i2c_write_u8(TWL4030_MODULE_AUDIO_VOICE,
+				 reg, TWL4030_REG_VIBRA_CTL);
+
+		/* set PWM, 1 = max, 255 = min */
+		twl_i2c_write_u8(TWL4030_MODULE_AUDIO_VOICE,
+				 256 - pwm, TWL4030_REG_VIBRA_SET);
+	} else {
+		if (info->enabled)
+			vibra_disable(info);
+	}
+}
+
+/*** Input/ForceFeedback ***/
+
+static int vibra_play(struct input_dev *input, void *data,
+		      struct ff_effect *effect)
+{
+	struct vibra_info *info = input_get_drvdata(input);
+
+	info->speed = effect->u.rumble.strong_magnitude >> 8;
+	if (!info->speed)
+		info->speed = effect->u.rumble.weak_magnitude >> 9;
+	info->direction = effect->direction < EFFECT_DIR_180_DEG ? 0 : 1;
+	schedule_work(&info->play_work);
+	return 0;
+}
+
+static void twl4030_vibra_close(struct input_dev *input)
+{
+	struct vibra_info *info = input_get_drvdata(input);
+
+	cancel_work_sync(&info->play_work);
+
+	if (info->enabled)
+		vibra_disable(info);
+}
+
+/*** Module ***/
+static int __maybe_unused twl4030_vibra_suspend(struct device *dev)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct vibra_info *info = platform_get_drvdata(pdev);
+
+	if (info->enabled)
+		vibra_disable(info);
+
+	return 0;
+}
+
+static int __maybe_unused twl4030_vibra_resume(struct device *dev)
+{
+	vibra_disable_leds();
+	return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(twl4030_vibra_pm_ops,
+			 twl4030_vibra_suspend, twl4030_vibra_resume);
+
+static bool twl4030_vibra_check_coexist(struct device_node *parent)
+{
+	struct device_node *node;
+
+	node = of_get_child_by_name(parent, "codec");
+	if (node) {
+		of_node_put(node);
+		return true;
+	}
+
+	return false;
+}
+
+static int twl4030_vibra_probe(struct platform_device *pdev)
+{
+	struct device_node *twl4030_core_node = pdev->dev.parent->of_node;
+	struct vibra_info *info;
+	int ret;
+
+	if (!twl4030_core_node) {
+		dev_dbg(&pdev->dev, "twl4030 OF node is missing\n");
+		return -EINVAL;
+	}
+
+	info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
+	if (!info)
+		return -ENOMEM;
+
+	info->dev = &pdev->dev;
+	info->coexist = twl4030_vibra_check_coexist(twl4030_core_node);
+	INIT_WORK(&info->play_work, vibra_play_work);
+
+	info->input_dev = devm_input_allocate_device(&pdev->dev);
+	if (info->input_dev == NULL) {
+		dev_err(&pdev->dev, "couldn't allocate input device\n");
+		return -ENOMEM;
+	}
+
+	input_set_drvdata(info->input_dev, info);
+
+	info->input_dev->name = "twl4030:vibrator";
+	info->input_dev->id.version = 1;
+	info->input_dev->close = twl4030_vibra_close;
+	__set_bit(FF_RUMBLE, info->input_dev->ffbit);
+
+	ret = input_ff_create_memless(info->input_dev, NULL, vibra_play);
+	if (ret < 0) {
+		dev_dbg(&pdev->dev, "couldn't register vibrator to FF\n");
+		return ret;
+	}
+
+	ret = input_register_device(info->input_dev);
+	if (ret < 0) {
+		dev_dbg(&pdev->dev, "couldn't register input device\n");
+		goto err_iff;
+	}
+
+	vibra_disable_leds();
+
+	platform_set_drvdata(pdev, info);
+	return 0;
+
+err_iff:
+	input_ff_destroy(info->input_dev);
+	return ret;
+}
+
+static struct platform_driver twl4030_vibra_driver = {
+	.probe		= twl4030_vibra_probe,
+	.driver		= {
+		.name	= "twl4030-vibra",
+		.pm	= &twl4030_vibra_pm_ops,
+	},
+};
+module_platform_driver(twl4030_vibra_driver);
+
+MODULE_ALIAS("platform:twl4030-vibra");
+MODULE_DESCRIPTION("TWL4030 Vibra driver");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Nokia Corporation");
diff --git a/drivers/input/misc/twl6040-vibra.c b/drivers/input/misc/twl6040-vibra.c
new file mode 100644
index 000000000..bf6644927
--- /dev/null
+++ b/drivers/input/misc/twl6040-vibra.c
@@ -0,0 +1,366 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * twl6040-vibra.c - TWL6040 Vibrator driver
+ *
+ * Author:      Jorge Eduardo Candelaria <jorge.candelaria@ti.com>
+ * Author:      Misael Lopez Cruz <misael.lopez@ti.com>
+ *
+ * Copyright:   (C) 2011 Texas Instruments, Inc.
+ *
+ * Based on twl4030-vibra.c by Henrik Saari <henrik.saari@nokia.com>
+ *				Felipe Balbi <felipe.balbi@nokia.com>
+ *				Jari Vanhala <ext-javi.vanhala@nokia.com>
+ */
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/of.h>
+#include <linux/workqueue.h>
+#include <linux/input.h>
+#include <linux/mfd/twl6040.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/regulator/consumer.h>
+
+#define EFFECT_DIR_180_DEG	0x8000
+
+/* Recommended modulation index 85% */
+#define TWL6040_VIBRA_MOD	85
+
+#define TWL6040_NUM_SUPPLIES 2
+
+struct vibra_info {
+	struct device *dev;
+	struct input_dev *input_dev;
+	struct work_struct play_work;
+
+	int irq;
+
+	bool enabled;
+	int weak_speed;
+	int strong_speed;
+	int direction;
+
+	unsigned int vibldrv_res;
+	unsigned int vibrdrv_res;
+	unsigned int viblmotor_res;
+	unsigned int vibrmotor_res;
+
+	struct regulator_bulk_data supplies[TWL6040_NUM_SUPPLIES];
+
+	struct twl6040 *twl6040;
+};
+
+static irqreturn_t twl6040_vib_irq_handler(int irq, void *data)
+{
+	struct vibra_info *info = data;
+	struct twl6040 *twl6040 = info->twl6040;
+	u8 status;
+
+	status = twl6040_reg_read(twl6040, TWL6040_REG_STATUS);
+	if (status & TWL6040_VIBLOCDET) {
+		dev_warn(info->dev, "Left Vibrator overcurrent detected\n");
+		twl6040_clear_bits(twl6040, TWL6040_REG_VIBCTLL,
+				   TWL6040_VIBENA);
+	}
+	if (status & TWL6040_VIBROCDET) {
+		dev_warn(info->dev, "Right Vibrator overcurrent detected\n");
+		twl6040_clear_bits(twl6040, TWL6040_REG_VIBCTLR,
+				   TWL6040_VIBENA);
+	}
+
+	return IRQ_HANDLED;
+}
+
+static void twl6040_vibra_enable(struct vibra_info *info)
+{
+	struct twl6040 *twl6040 = info->twl6040;
+	int ret;
+
+	ret = regulator_bulk_enable(ARRAY_SIZE(info->supplies), info->supplies);
+	if (ret) {
+		dev_err(info->dev, "failed to enable regulators %d\n", ret);
+		return;
+	}
+
+	twl6040_power(info->twl6040, 1);
+	if (twl6040_get_revid(twl6040) <= TWL6040_REV_ES1_1) {
+		/*
+		 * ERRATA: Disable overcurrent protection for at least
+		 * 3ms when enabling vibrator drivers to avoid false
+		 * overcurrent detection
+		 */
+		twl6040_reg_write(twl6040, TWL6040_REG_VIBCTLL,
+				  TWL6040_VIBENA | TWL6040_VIBCTRL);
+		twl6040_reg_write(twl6040, TWL6040_REG_VIBCTLR,
+				  TWL6040_VIBENA | TWL6040_VIBCTRL);
+		usleep_range(3000, 3500);
+	}
+
+	twl6040_reg_write(twl6040, TWL6040_REG_VIBCTLL,
+			  TWL6040_VIBENA);
+	twl6040_reg_write(twl6040, TWL6040_REG_VIBCTLR,
+			  TWL6040_VIBENA);
+
+	info->enabled = true;
+}
+
+static void twl6040_vibra_disable(struct vibra_info *info)
+{
+	struct twl6040 *twl6040 = info->twl6040;
+
+	twl6040_reg_write(twl6040, TWL6040_REG_VIBCTLL, 0x00);
+	twl6040_reg_write(twl6040, TWL6040_REG_VIBCTLR, 0x00);
+	twl6040_power(info->twl6040, 0);
+
+	regulator_bulk_disable(ARRAY_SIZE(info->supplies), info->supplies);
+
+	info->enabled = false;
+}
+
+static u8 twl6040_vibra_code(int vddvib, int vibdrv_res, int motor_res,
+			     int speed, int direction)
+{
+	int vpk, max_code;
+	u8 vibdat;
+
+	/* output swing */
+	vpk = (vddvib * motor_res * TWL6040_VIBRA_MOD) /
+		(100 * (vibdrv_res + motor_res));
+
+	/* 50mV per VIBDAT code step */
+	max_code = vpk / 50;
+	if (max_code > TWL6040_VIBDAT_MAX)
+		max_code = TWL6040_VIBDAT_MAX;
+
+	/* scale speed to max allowed code */
+	vibdat = (u8)((speed * max_code) / USHRT_MAX);
+
+	/* 2's complement for direction > 180 degrees */
+	vibdat *= direction;
+
+	return vibdat;
+}
+
+static void twl6040_vibra_set_effect(struct vibra_info *info)
+{
+	struct twl6040 *twl6040 = info->twl6040;
+	u8 vibdatl, vibdatr;
+	int volt;
+
+	/* weak motor */
+	volt = regulator_get_voltage(info->supplies[0].consumer) / 1000;
+	vibdatl = twl6040_vibra_code(volt, info->vibldrv_res,
+				     info->viblmotor_res,
+				     info->weak_speed, info->direction);
+
+	/* strong motor */
+	volt = regulator_get_voltage(info->supplies[1].consumer) / 1000;
+	vibdatr = twl6040_vibra_code(volt, info->vibrdrv_res,
+				     info->vibrmotor_res,
+				     info->strong_speed, info->direction);
+
+	twl6040_reg_write(twl6040, TWL6040_REG_VIBDATL, vibdatl);
+	twl6040_reg_write(twl6040, TWL6040_REG_VIBDATR, vibdatr);
+}
+
+static void vibra_play_work(struct work_struct *work)
+{
+	struct vibra_info *info = container_of(work,
+				struct vibra_info, play_work);
+	int ret;
+
+	/* Do not allow effect, while the routing is set to use audio */
+	ret = twl6040_get_vibralr_status(info->twl6040);
+	if (ret & TWL6040_VIBSEL) {
+		dev_info(info->dev, "Vibra is configured for audio\n");
+		return;
+	}
+
+	if (info->weak_speed || info->strong_speed) {
+		if (!info->enabled)
+			twl6040_vibra_enable(info);
+
+		twl6040_vibra_set_effect(info);
+	} else if (info->enabled)
+		twl6040_vibra_disable(info);
+
+}
+
+static int vibra_play(struct input_dev *input, void *data,
+		      struct ff_effect *effect)
+{
+	struct vibra_info *info = input_get_drvdata(input);
+
+	info->weak_speed = effect->u.rumble.weak_magnitude;
+	info->strong_speed = effect->u.rumble.strong_magnitude;
+	info->direction = effect->direction < EFFECT_DIR_180_DEG ? 1 : -1;
+
+	schedule_work(&info->play_work);
+
+	return 0;
+}
+
+static void twl6040_vibra_close(struct input_dev *input)
+{
+	struct vibra_info *info = input_get_drvdata(input);
+
+	cancel_work_sync(&info->play_work);
+
+	if (info->enabled)
+		twl6040_vibra_disable(info);
+}
+
+static int __maybe_unused twl6040_vibra_suspend(struct device *dev)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct vibra_info *info = platform_get_drvdata(pdev);
+
+	cancel_work_sync(&info->play_work);
+
+	if (info->enabled)
+		twl6040_vibra_disable(info);
+
+	return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(twl6040_vibra_pm_ops, twl6040_vibra_suspend, NULL);
+
+static int twl6040_vibra_probe(struct platform_device *pdev)
+{
+	struct device *twl6040_core_dev = pdev->dev.parent;
+	struct device_node *twl6040_core_node;
+	struct vibra_info *info;
+	int vddvibl_uV = 0;
+	int vddvibr_uV = 0;
+	int error;
+
+	twl6040_core_node = of_get_child_by_name(twl6040_core_dev->of_node,
+						 "vibra");
+	if (!twl6040_core_node) {
+		dev_err(&pdev->dev, "parent of node is missing?\n");
+		return -EINVAL;
+	}
+
+	info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
+	if (!info) {
+		of_node_put(twl6040_core_node);
+		dev_err(&pdev->dev, "couldn't allocate memory\n");
+		return -ENOMEM;
+	}
+
+	info->dev = &pdev->dev;
+
+	info->twl6040 = dev_get_drvdata(pdev->dev.parent);
+
+	of_property_read_u32(twl6040_core_node, "ti,vibldrv-res",
+			     &info->vibldrv_res);
+	of_property_read_u32(twl6040_core_node, "ti,vibrdrv-res",
+			     &info->vibrdrv_res);
+	of_property_read_u32(twl6040_core_node, "ti,viblmotor-res",
+			     &info->viblmotor_res);
+	of_property_read_u32(twl6040_core_node, "ti,vibrmotor-res",
+			     &info->vibrmotor_res);
+	of_property_read_u32(twl6040_core_node, "ti,vddvibl-uV", &vddvibl_uV);
+	of_property_read_u32(twl6040_core_node, "ti,vddvibr-uV", &vddvibr_uV);
+
+	of_node_put(twl6040_core_node);
+
+	if ((!info->vibldrv_res && !info->viblmotor_res) ||
+	    (!info->vibrdrv_res && !info->vibrmotor_res)) {
+		dev_err(info->dev, "invalid vibra driver/motor resistance\n");
+		return -EINVAL;
+	}
+
+	info->irq = platform_get_irq(pdev, 0);
+	if (info->irq < 0)
+		return -EINVAL;
+
+	error = devm_request_threaded_irq(&pdev->dev, info->irq, NULL,
+					  twl6040_vib_irq_handler,
+					  IRQF_ONESHOT,
+					  "twl6040_irq_vib", info);
+	if (error) {
+		dev_err(info->dev, "VIB IRQ request failed: %d\n", error);
+		return error;
+	}
+
+	info->supplies[0].supply = "vddvibl";
+	info->supplies[1].supply = "vddvibr";
+	/*
+	 * When booted with Device tree the regulators are attached to the
+	 * parent device (twl6040 MFD core)
+	 */
+	error = devm_regulator_bulk_get(twl6040_core_dev,
+					ARRAY_SIZE(info->supplies),
+					info->supplies);
+	if (error) {
+		dev_err(info->dev, "couldn't get regulators %d\n", error);
+		return error;
+	}
+
+	if (vddvibl_uV) {
+		error = regulator_set_voltage(info->supplies[0].consumer,
+					      vddvibl_uV, vddvibl_uV);
+		if (error) {
+			dev_err(info->dev, "failed to set VDDVIBL volt %d\n",
+				error);
+			return error;
+		}
+	}
+
+	if (vddvibr_uV) {
+		error = regulator_set_voltage(info->supplies[1].consumer,
+					      vddvibr_uV, vddvibr_uV);
+		if (error) {
+			dev_err(info->dev, "failed to set VDDVIBR volt %d\n",
+				error);
+			return error;
+		}
+	}
+
+	INIT_WORK(&info->play_work, vibra_play_work);
+
+	info->input_dev = devm_input_allocate_device(&pdev->dev);
+	if (!info->input_dev) {
+		dev_err(info->dev, "couldn't allocate input device\n");
+		return -ENOMEM;
+	}
+
+	input_set_drvdata(info->input_dev, info);
+
+	info->input_dev->name = "twl6040:vibrator";
+	info->input_dev->id.version = 1;
+	info->input_dev->close = twl6040_vibra_close;
+	__set_bit(FF_RUMBLE, info->input_dev->ffbit);
+
+	error = input_ff_create_memless(info->input_dev, NULL, vibra_play);
+	if (error) {
+		dev_err(info->dev, "couldn't register vibrator to FF\n");
+		return error;
+	}
+
+	error = input_register_device(info->input_dev);
+	if (error) {
+		dev_err(info->dev, "couldn't register input device\n");
+		return error;
+	}
+
+	platform_set_drvdata(pdev, info);
+
+	return 0;
+}
+
+static struct platform_driver twl6040_vibra_driver = {
+	.probe		= twl6040_vibra_probe,
+	.driver		= {
+		.name	= "twl6040-vibra",
+		.pm	= &twl6040_vibra_pm_ops,
+	},
+};
+module_platform_driver(twl6040_vibra_driver);
+
+MODULE_ALIAS("platform:twl6040-vibra");
+MODULE_DESCRIPTION("TWL6040 Vibra driver");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Jorge Eduardo Candelaria <jorge.candelaria@ti.com>");
+MODULE_AUTHOR("Misael Lopez Cruz <misael.lopez@ti.com>");
diff --git a/drivers/input/misc/uinput.c b/drivers/input/misc/uinput.c
new file mode 100644
index 000000000..f2593133e
--- /dev/null
+++ b/drivers/input/misc/uinput.c
@@ -0,0 +1,1102 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *  User level driver support for input subsystem
+ *
+ * Heavily based on evdev.c by Vojtech Pavlik
+ *
+ * Author: Aristeu Sergio Rozanski Filho <aris@cathedrallabs.org>
+ *
+ * Changes/Revisions:
+ *	0.4	01/09/2014 (Benjamin Tissoires <benjamin.tissoires@redhat.com>)
+ *		- add UI_GET_SYSNAME ioctl
+ *	0.3	09/04/2006 (Anssi Hannula <anssi.hannula@gmail.com>)
+ *		- updated ff support for the changes in kernel interface
+ *		- added MODULE_VERSION
+ *	0.2	16/10/2004 (Micah Dowty <micah@navi.cx>)
+ *		- added force feedback support
+ *              - added UI_SET_PHYS
+ *	0.1	20/06/2002
+ *		- first public version
+ */
+#include <uapi/linux/uinput.h>
+#include <linux/poll.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/fs.h>
+#include <linux/miscdevice.h>
+#include <linux/overflow.h>
+#include <linux/input/mt.h>
+#include "../input-compat.h"
+
+#define UINPUT_NAME		"uinput"
+#define UINPUT_BUFFER_SIZE	16
+#define UINPUT_NUM_REQUESTS	16
+
+enum uinput_state { UIST_NEW_DEVICE, UIST_SETUP_COMPLETE, UIST_CREATED };
+
+struct uinput_request {
+	unsigned int		id;
+	unsigned int		code;	/* UI_FF_UPLOAD, UI_FF_ERASE */
+
+	int			retval;
+	struct completion	done;
+
+	union {
+		unsigned int	effect_id;
+		struct {
+			struct ff_effect *effect;
+			struct ff_effect *old;
+		} upload;
+	} u;
+};
+
+struct uinput_device {
+	struct input_dev	*dev;
+	struct mutex		mutex;
+	enum uinput_state	state;
+	wait_queue_head_t	waitq;
+	unsigned char		ready;
+	unsigned char		head;
+	unsigned char		tail;
+	struct input_event	buff[UINPUT_BUFFER_SIZE];
+	unsigned int		ff_effects_max;
+
+	struct uinput_request	*requests[UINPUT_NUM_REQUESTS];
+	wait_queue_head_t	requests_waitq;
+	spinlock_t		requests_lock;
+};
+
+static int uinput_dev_event(struct input_dev *dev,
+			    unsigned int type, unsigned int code, int value)
+{
+	struct uinput_device	*udev = input_get_drvdata(dev);
+	struct timespec64	ts;
+
+	ktime_get_ts64(&ts);
+
+	udev->buff[udev->head] = (struct input_event) {
+		.input_event_sec = ts.tv_sec,
+		.input_event_usec = ts.tv_nsec / NSEC_PER_USEC,
+		.type = type,
+		.code = code,
+		.value = value,
+	};
+
+	udev->head = (udev->head + 1) % UINPUT_BUFFER_SIZE;
+
+	wake_up_interruptible(&udev->waitq);
+
+	return 0;
+}
+
+/* Atomically allocate an ID for the given request. Returns 0 on success. */
+static bool uinput_request_alloc_id(struct uinput_device *udev,
+				    struct uinput_request *request)
+{
+	unsigned int id;
+	bool reserved = false;
+
+	spin_lock(&udev->requests_lock);
+
+	for (id = 0; id < UINPUT_NUM_REQUESTS; id++) {
+		if (!udev->requests[id]) {
+			request->id = id;
+			udev->requests[id] = request;
+			reserved = true;
+			break;
+		}
+	}
+
+	spin_unlock(&udev->requests_lock);
+	return reserved;
+}
+
+static struct uinput_request *uinput_request_find(struct uinput_device *udev,
+						  unsigned int id)
+{
+	/* Find an input request, by ID. Returns NULL if the ID isn't valid. */
+	if (id >= UINPUT_NUM_REQUESTS)
+		return NULL;
+
+	return udev->requests[id];
+}
+
+static int uinput_request_reserve_slot(struct uinput_device *udev,
+				       struct uinput_request *request)
+{
+	/* Allocate slot. If none are available right away, wait. */
+	return wait_event_interruptible(udev->requests_waitq,
+					uinput_request_alloc_id(udev, request));
+}
+
+static void uinput_request_release_slot(struct uinput_device *udev,
+					unsigned int id)
+{
+	/* Mark slot as available */
+	spin_lock(&udev->requests_lock);
+	udev->requests[id] = NULL;
+	spin_unlock(&udev->requests_lock);
+
+	wake_up(&udev->requests_waitq);
+}
+
+static int uinput_request_send(struct uinput_device *udev,
+			       struct uinput_request *request)
+{
+	int retval;
+
+	retval = mutex_lock_interruptible(&udev->mutex);
+	if (retval)
+		return retval;
+
+	if (udev->state != UIST_CREATED) {
+		retval = -ENODEV;
+		goto out;
+	}
+
+	init_completion(&request->done);
+
+	/*
+	 * Tell our userspace application about this new request
+	 * by queueing an input event.
+	 */
+	uinput_dev_event(udev->dev, EV_UINPUT, request->code, request->id);
+
+ out:
+	mutex_unlock(&udev->mutex);
+	return retval;
+}
+
+static int uinput_request_submit(struct uinput_device *udev,
+				 struct uinput_request *request)
+{
+	int retval;
+
+	retval = uinput_request_reserve_slot(udev, request);
+	if (retval)
+		return retval;
+
+	retval = uinput_request_send(udev, request);
+	if (retval)
+		goto out;
+
+	if (!wait_for_completion_timeout(&request->done, 30 * HZ)) {
+		retval = -ETIMEDOUT;
+		goto out;
+	}
+
+	retval = request->retval;
+
+ out:
+	uinput_request_release_slot(udev, request->id);
+	return retval;
+}
+
+/*
+ * Fail all outstanding requests so handlers don't wait for the userspace
+ * to finish processing them.
+ */
+static void uinput_flush_requests(struct uinput_device *udev)
+{
+	struct uinput_request *request;
+	int i;
+
+	spin_lock(&udev->requests_lock);
+
+	for (i = 0; i < UINPUT_NUM_REQUESTS; i++) {
+		request = udev->requests[i];
+		if (request) {
+			request->retval = -ENODEV;
+			complete(&request->done);
+		}
+	}
+
+	spin_unlock(&udev->requests_lock);
+}
+
+static void uinput_dev_set_gain(struct input_dev *dev, u16 gain)
+{
+	uinput_dev_event(dev, EV_FF, FF_GAIN, gain);
+}
+
+static void uinput_dev_set_autocenter(struct input_dev *dev, u16 magnitude)
+{
+	uinput_dev_event(dev, EV_FF, FF_AUTOCENTER, magnitude);
+}
+
+static int uinput_dev_playback(struct input_dev *dev, int effect_id, int value)
+{
+	return uinput_dev_event(dev, EV_FF, effect_id, value);
+}
+
+static int uinput_dev_upload_effect(struct input_dev *dev,
+				    struct ff_effect *effect,
+				    struct ff_effect *old)
+{
+	struct uinput_device *udev = input_get_drvdata(dev);
+	struct uinput_request request;
+
+	/*
+	 * uinput driver does not currently support periodic effects with
+	 * custom waveform since it does not have a way to pass buffer of
+	 * samples (custom_data) to userspace. If ever there is a device
+	 * supporting custom waveforms we would need to define an additional
+	 * ioctl (UI_UPLOAD_SAMPLES) but for now we just bail out.
+	 */
+	if (effect->type == FF_PERIODIC &&
+			effect->u.periodic.waveform == FF_CUSTOM)
+		return -EINVAL;
+
+	request.code = UI_FF_UPLOAD;
+	request.u.upload.effect = effect;
+	request.u.upload.old = old;
+
+	return uinput_request_submit(udev, &request);
+}
+
+static int uinput_dev_erase_effect(struct input_dev *dev, int effect_id)
+{
+	struct uinput_device *udev = input_get_drvdata(dev);
+	struct uinput_request request;
+
+	if (!test_bit(EV_FF, dev->evbit))
+		return -ENOSYS;
+
+	request.code = UI_FF_ERASE;
+	request.u.effect_id = effect_id;
+
+	return uinput_request_submit(udev, &request);
+}
+
+static int uinput_dev_flush(struct input_dev *dev, struct file *file)
+{
+	/*
+	 * If we are called with file == NULL that means we are tearing
+	 * down the device, and therefore we can not handle FF erase
+	 * requests: either we are handling UI_DEV_DESTROY (and holding
+	 * the udev->mutex), or the file descriptor is closed and there is
+	 * nobody on the other side anymore.
+	 */
+	return file ? input_ff_flush(dev, file) : 0;
+}
+
+static void uinput_destroy_device(struct uinput_device *udev)
+{
+	const char *name, *phys;
+	struct input_dev *dev = udev->dev;
+	enum uinput_state old_state = udev->state;
+
+	udev->state = UIST_NEW_DEVICE;
+
+	if (dev) {
+		name = dev->name;
+		phys = dev->phys;
+		if (old_state == UIST_CREATED) {
+			uinput_flush_requests(udev);
+			input_unregister_device(dev);
+		} else {
+			input_free_device(dev);
+		}
+		kfree(name);
+		kfree(phys);
+		udev->dev = NULL;
+	}
+}
+
+static int uinput_create_device(struct uinput_device *udev)
+{
+	struct input_dev *dev = udev->dev;
+	int error, nslot;
+
+	if (udev->state != UIST_SETUP_COMPLETE) {
+		printk(KERN_DEBUG "%s: write device info first\n", UINPUT_NAME);
+		return -EINVAL;
+	}
+
+	if (test_bit(EV_ABS, dev->evbit)) {
+		input_alloc_absinfo(dev);
+		if (!dev->absinfo) {
+			error = -EINVAL;
+			goto fail1;
+		}
+
+		if (test_bit(ABS_MT_SLOT, dev->absbit)) {
+			nslot = input_abs_get_max(dev, ABS_MT_SLOT) + 1;
+			error = input_mt_init_slots(dev, nslot, 0);
+			if (error)
+				goto fail1;
+		} else if (test_bit(ABS_MT_POSITION_X, dev->absbit)) {
+			input_set_events_per_packet(dev, 60);
+		}
+	}
+
+	if (test_bit(EV_FF, dev->evbit) && !udev->ff_effects_max) {
+		printk(KERN_DEBUG "%s: ff_effects_max should be non-zero when FF_BIT is set\n",
+			UINPUT_NAME);
+		error = -EINVAL;
+		goto fail1;
+	}
+
+	if (udev->ff_effects_max) {
+		error = input_ff_create(dev, udev->ff_effects_max);
+		if (error)
+			goto fail1;
+
+		dev->ff->upload = uinput_dev_upload_effect;
+		dev->ff->erase = uinput_dev_erase_effect;
+		dev->ff->playback = uinput_dev_playback;
+		dev->ff->set_gain = uinput_dev_set_gain;
+		dev->ff->set_autocenter = uinput_dev_set_autocenter;
+		/*
+		 * The standard input_ff_flush() implementation does
+		 * not quite work for uinput as we can't reasonably
+		 * handle FF requests during device teardown.
+		 */
+		dev->flush = uinput_dev_flush;
+	}
+
+	dev->event = uinput_dev_event;
+
+	input_set_drvdata(udev->dev, udev);
+
+	error = input_register_device(udev->dev);
+	if (error)
+		goto fail2;
+
+	udev->state = UIST_CREATED;
+
+	return 0;
+
+ fail2:	input_ff_destroy(dev);
+ fail1: uinput_destroy_device(udev);
+	return error;
+}
+
+static int uinput_open(struct inode *inode, struct file *file)
+{
+	struct uinput_device *newdev;
+
+	newdev = kzalloc(sizeof(struct uinput_device), GFP_KERNEL);
+	if (!newdev)
+		return -ENOMEM;
+
+	mutex_init(&newdev->mutex);
+	spin_lock_init(&newdev->requests_lock);
+	init_waitqueue_head(&newdev->requests_waitq);
+	init_waitqueue_head(&newdev->waitq);
+	newdev->state = UIST_NEW_DEVICE;
+
+	file->private_data = newdev;
+	stream_open(inode, file);
+
+	return 0;
+}
+
+static int uinput_validate_absinfo(struct input_dev *dev, unsigned int code,
+				   const struct input_absinfo *abs)
+{
+	int min, max, range;
+
+	min = abs->minimum;
+	max = abs->maximum;
+
+	if ((min != 0 || max != 0) && max < min) {
+		printk(KERN_DEBUG
+		       "%s: invalid abs[%02x] min:%d max:%d\n",
+		       UINPUT_NAME, code, min, max);
+		return -EINVAL;
+	}
+
+	if (!check_sub_overflow(max, min, &range) && abs->flat > range) {
+		printk(KERN_DEBUG
+		       "%s: abs_flat #%02x out of range: %d (min:%d/max:%d)\n",
+		       UINPUT_NAME, code, abs->flat, min, max);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int uinput_validate_absbits(struct input_dev *dev)
+{
+	unsigned int cnt;
+	int error;
+
+	if (!test_bit(EV_ABS, dev->evbit))
+		return 0;
+
+	/*
+	 * Check if absmin/absmax/absfuzz/absflat are sane.
+	 */
+
+	for_each_set_bit(cnt, dev->absbit, ABS_CNT) {
+		if (!dev->absinfo)
+			return -EINVAL;
+
+		error = uinput_validate_absinfo(dev, cnt, &dev->absinfo[cnt]);
+		if (error)
+			return error;
+	}
+
+	return 0;
+}
+
+static int uinput_dev_setup(struct uinput_device *udev,
+			    struct uinput_setup __user *arg)
+{
+	struct uinput_setup setup;
+	struct input_dev *dev;
+
+	if (udev->state == UIST_CREATED)
+		return -EINVAL;
+
+	if (copy_from_user(&setup, arg, sizeof(setup)))
+		return -EFAULT;
+
+	if (!setup.name[0])
+		return -EINVAL;
+
+	dev = udev->dev;
+	dev->id = setup.id;
+	udev->ff_effects_max = setup.ff_effects_max;
+
+	kfree(dev->name);
+	dev->name = kstrndup(setup.name, UINPUT_MAX_NAME_SIZE, GFP_KERNEL);
+	if (!dev->name)
+		return -ENOMEM;
+
+	udev->state = UIST_SETUP_COMPLETE;
+	return 0;
+}
+
+static int uinput_abs_setup(struct uinput_device *udev,
+			    struct uinput_setup __user *arg, size_t size)
+{
+	struct uinput_abs_setup setup = {};
+	struct input_dev *dev;
+	int error;
+
+	if (size > sizeof(setup))
+		return -E2BIG;
+
+	if (udev->state == UIST_CREATED)
+		return -EINVAL;
+
+	if (copy_from_user(&setup, arg, size))
+		return -EFAULT;
+
+	if (setup.code > ABS_MAX)
+		return -ERANGE;
+
+	dev = udev->dev;
+
+	error = uinput_validate_absinfo(dev, setup.code, &setup.absinfo);
+	if (error)
+		return error;
+
+	input_alloc_absinfo(dev);
+	if (!dev->absinfo)
+		return -ENOMEM;
+
+	set_bit(setup.code, dev->absbit);
+	dev->absinfo[setup.code] = setup.absinfo;
+	return 0;
+}
+
+/* legacy setup via write() */
+static int uinput_setup_device_legacy(struct uinput_device *udev,
+				      const char __user *buffer, size_t count)
+{
+	struct uinput_user_dev	*user_dev;
+	struct input_dev	*dev;
+	int			i;
+	int			retval;
+
+	if (count != sizeof(struct uinput_user_dev))
+		return -EINVAL;
+
+	if (!udev->dev) {
+		udev->dev = input_allocate_device();
+		if (!udev->dev)
+			return -ENOMEM;
+	}
+
+	dev = udev->dev;
+
+	user_dev = memdup_user(buffer, sizeof(struct uinput_user_dev));
+	if (IS_ERR(user_dev))
+		return PTR_ERR(user_dev);
+
+	udev->ff_effects_max = user_dev->ff_effects_max;
+
+	/* Ensure name is filled in */
+	if (!user_dev->name[0]) {
+		retval = -EINVAL;
+		goto exit;
+	}
+
+	kfree(dev->name);
+	dev->name = kstrndup(user_dev->name, UINPUT_MAX_NAME_SIZE,
+			     GFP_KERNEL);
+	if (!dev->name) {
+		retval = -ENOMEM;
+		goto exit;
+	}
+
+	dev->id.bustype	= user_dev->id.bustype;
+	dev->id.vendor	= user_dev->id.vendor;
+	dev->id.product	= user_dev->id.product;
+	dev->id.version	= user_dev->id.version;
+
+	for (i = 0; i < ABS_CNT; i++) {
+		input_abs_set_max(dev, i, user_dev->absmax[i]);
+		input_abs_set_min(dev, i, user_dev->absmin[i]);
+		input_abs_set_fuzz(dev, i, user_dev->absfuzz[i]);
+		input_abs_set_flat(dev, i, user_dev->absflat[i]);
+	}
+
+	retval = uinput_validate_absbits(dev);
+	if (retval < 0)
+		goto exit;
+
+	udev->state = UIST_SETUP_COMPLETE;
+	retval = count;
+
+ exit:
+	kfree(user_dev);
+	return retval;
+}
+
+static ssize_t uinput_inject_events(struct uinput_device *udev,
+				    const char __user *buffer, size_t count)
+{
+	struct input_event ev;
+	size_t bytes = 0;
+
+	if (count != 0 && count < input_event_size())
+		return -EINVAL;
+
+	while (bytes + input_event_size() <= count) {
+		/*
+		 * Note that even if some events were fetched successfully
+		 * we are still going to return EFAULT instead of partial
+		 * count to let userspace know that it got it's buffers
+		 * all wrong.
+		 */
+		if (input_event_from_user(buffer + bytes, &ev))
+			return -EFAULT;
+
+		input_event(udev->dev, ev.type, ev.code, ev.value);
+		bytes += input_event_size();
+		cond_resched();
+	}
+
+	return bytes;
+}
+
+static ssize_t uinput_write(struct file *file, const char __user *buffer,
+			    size_t count, loff_t *ppos)
+{
+	struct uinput_device *udev = file->private_data;
+	int retval;
+
+	if (count == 0)
+		return 0;
+
+	retval = mutex_lock_interruptible(&udev->mutex);
+	if (retval)
+		return retval;
+
+	retval = udev->state == UIST_CREATED ?
+			uinput_inject_events(udev, buffer, count) :
+			uinput_setup_device_legacy(udev, buffer, count);
+
+	mutex_unlock(&udev->mutex);
+
+	return retval;
+}
+
+static bool uinput_fetch_next_event(struct uinput_device *udev,
+				    struct input_event *event)
+{
+	bool have_event;
+
+	spin_lock_irq(&udev->dev->event_lock);
+
+	have_event = udev->head != udev->tail;
+	if (have_event) {
+		*event = udev->buff[udev->tail];
+		udev->tail = (udev->tail + 1) % UINPUT_BUFFER_SIZE;
+	}
+
+	spin_unlock_irq(&udev->dev->event_lock);
+
+	return have_event;
+}
+
+static ssize_t uinput_events_to_user(struct uinput_device *udev,
+				     char __user *buffer, size_t count)
+{
+	struct input_event event;
+	size_t read = 0;
+
+	while (read + input_event_size() <= count &&
+	       uinput_fetch_next_event(udev, &event)) {
+
+		if (input_event_to_user(buffer + read, &event))
+			return -EFAULT;
+
+		read += input_event_size();
+	}
+
+	return read;
+}
+
+static ssize_t uinput_read(struct file *file, char __user *buffer,
+			   size_t count, loff_t *ppos)
+{
+	struct uinput_device *udev = file->private_data;
+	ssize_t retval;
+
+	if (count != 0 && count < input_event_size())
+		return -EINVAL;
+
+	do {
+		retval = mutex_lock_interruptible(&udev->mutex);
+		if (retval)
+			return retval;
+
+		if (udev->state != UIST_CREATED)
+			retval = -ENODEV;
+		else if (udev->head == udev->tail &&
+			 (file->f_flags & O_NONBLOCK))
+			retval = -EAGAIN;
+		else
+			retval = uinput_events_to_user(udev, buffer, count);
+
+		mutex_unlock(&udev->mutex);
+
+		if (retval || count == 0)
+			break;
+
+		if (!(file->f_flags & O_NONBLOCK))
+			retval = wait_event_interruptible(udev->waitq,
+						  udev->head != udev->tail ||
+						  udev->state != UIST_CREATED);
+	} while (retval == 0);
+
+	return retval;
+}
+
+static __poll_t uinput_poll(struct file *file, poll_table *wait)
+{
+	struct uinput_device *udev = file->private_data;
+	__poll_t mask = EPOLLOUT | EPOLLWRNORM; /* uinput is always writable */
+
+	poll_wait(file, &udev->waitq, wait);
+
+	if (udev->head != udev->tail)
+		mask |= EPOLLIN | EPOLLRDNORM;
+
+	return mask;
+}
+
+static int uinput_release(struct inode *inode, struct file *file)
+{
+	struct uinput_device *udev = file->private_data;
+
+	uinput_destroy_device(udev);
+	kfree(udev);
+
+	return 0;
+}
+
+#ifdef CONFIG_COMPAT
+struct uinput_ff_upload_compat {
+	__u32			request_id;
+	__s32			retval;
+	struct ff_effect_compat	effect;
+	struct ff_effect_compat	old;
+};
+
+static int uinput_ff_upload_to_user(char __user *buffer,
+				    const struct uinput_ff_upload *ff_up)
+{
+	if (in_compat_syscall()) {
+		struct uinput_ff_upload_compat ff_up_compat;
+
+		ff_up_compat.request_id = ff_up->request_id;
+		ff_up_compat.retval = ff_up->retval;
+		/*
+		 * It so happens that the pointer that gives us the trouble
+		 * is the last field in the structure. Since we don't support
+		 * custom waveforms in uinput anyway we can just copy the whole
+		 * thing (to the compat size) and ignore the pointer.
+		 */
+		memcpy(&ff_up_compat.effect, &ff_up->effect,
+			sizeof(struct ff_effect_compat));
+		memcpy(&ff_up_compat.old, &ff_up->old,
+			sizeof(struct ff_effect_compat));
+
+		if (copy_to_user(buffer, &ff_up_compat,
+				 sizeof(struct uinput_ff_upload_compat)))
+			return -EFAULT;
+	} else {
+		if (copy_to_user(buffer, ff_up,
+				 sizeof(struct uinput_ff_upload)))
+			return -EFAULT;
+	}
+
+	return 0;
+}
+
+static int uinput_ff_upload_from_user(const char __user *buffer,
+				      struct uinput_ff_upload *ff_up)
+{
+	if (in_compat_syscall()) {
+		struct uinput_ff_upload_compat ff_up_compat;
+
+		if (copy_from_user(&ff_up_compat, buffer,
+				   sizeof(struct uinput_ff_upload_compat)))
+			return -EFAULT;
+
+		ff_up->request_id = ff_up_compat.request_id;
+		ff_up->retval = ff_up_compat.retval;
+		memcpy(&ff_up->effect, &ff_up_compat.effect,
+			sizeof(struct ff_effect_compat));
+		memcpy(&ff_up->old, &ff_up_compat.old,
+			sizeof(struct ff_effect_compat));
+
+	} else {
+		if (copy_from_user(ff_up, buffer,
+				   sizeof(struct uinput_ff_upload)))
+			return -EFAULT;
+	}
+
+	return 0;
+}
+
+#else
+
+static int uinput_ff_upload_to_user(char __user *buffer,
+				    const struct uinput_ff_upload *ff_up)
+{
+	if (copy_to_user(buffer, ff_up, sizeof(struct uinput_ff_upload)))
+		return -EFAULT;
+
+	return 0;
+}
+
+static int uinput_ff_upload_from_user(const char __user *buffer,
+				      struct uinput_ff_upload *ff_up)
+{
+	if (copy_from_user(ff_up, buffer, sizeof(struct uinput_ff_upload)))
+		return -EFAULT;
+
+	return 0;
+}
+
+#endif
+
+#define uinput_set_bit(_arg, _bit, _max)		\
+({							\
+	int __ret = 0;					\
+	if (udev->state == UIST_CREATED)		\
+		__ret =  -EINVAL;			\
+	else if ((_arg) > (_max))			\
+		__ret = -EINVAL;			\
+	else set_bit((_arg), udev->dev->_bit);		\
+	__ret;						\
+})
+
+static int uinput_str_to_user(void __user *dest, const char *str,
+			      unsigned int maxlen)
+{
+	char __user *p = dest;
+	int len, ret;
+
+	if (!str)
+		return -ENOENT;
+
+	if (maxlen == 0)
+		return -EINVAL;
+
+	len = strlen(str) + 1;
+	if (len > maxlen)
+		len = maxlen;
+
+	ret = copy_to_user(p, str, len);
+	if (ret)
+		return -EFAULT;
+
+	/* force terminating '\0' */
+	ret = put_user(0, p + len - 1);
+	return ret ? -EFAULT : len;
+}
+
+static long uinput_ioctl_handler(struct file *file, unsigned int cmd,
+				 unsigned long arg, void __user *p)
+{
+	int			retval;
+	struct uinput_device	*udev = file->private_data;
+	struct uinput_ff_upload ff_up;
+	struct uinput_ff_erase  ff_erase;
+	struct uinput_request   *req;
+	char			*phys;
+	const char		*name;
+	unsigned int		size;
+
+	retval = mutex_lock_interruptible(&udev->mutex);
+	if (retval)
+		return retval;
+
+	if (!udev->dev) {
+		udev->dev = input_allocate_device();
+		if (!udev->dev) {
+			retval = -ENOMEM;
+			goto out;
+		}
+	}
+
+	switch (cmd) {
+	case UI_GET_VERSION:
+		if (put_user(UINPUT_VERSION, (unsigned int __user *)p))
+			retval = -EFAULT;
+		goto out;
+
+	case UI_DEV_CREATE:
+		retval = uinput_create_device(udev);
+		goto out;
+
+	case UI_DEV_DESTROY:
+		uinput_destroy_device(udev);
+		goto out;
+
+	case UI_DEV_SETUP:
+		retval = uinput_dev_setup(udev, p);
+		goto out;
+
+	/* UI_ABS_SETUP is handled in the variable size ioctls */
+
+	case UI_SET_EVBIT:
+		retval = uinput_set_bit(arg, evbit, EV_MAX);
+		goto out;
+
+	case UI_SET_KEYBIT:
+		retval = uinput_set_bit(arg, keybit, KEY_MAX);
+		goto out;
+
+	case UI_SET_RELBIT:
+		retval = uinput_set_bit(arg, relbit, REL_MAX);
+		goto out;
+
+	case UI_SET_ABSBIT:
+		retval = uinput_set_bit(arg, absbit, ABS_MAX);
+		goto out;
+
+	case UI_SET_MSCBIT:
+		retval = uinput_set_bit(arg, mscbit, MSC_MAX);
+		goto out;
+
+	case UI_SET_LEDBIT:
+		retval = uinput_set_bit(arg, ledbit, LED_MAX);
+		goto out;
+
+	case UI_SET_SNDBIT:
+		retval = uinput_set_bit(arg, sndbit, SND_MAX);
+		goto out;
+
+	case UI_SET_FFBIT:
+		retval = uinput_set_bit(arg, ffbit, FF_MAX);
+		goto out;
+
+	case UI_SET_SWBIT:
+		retval = uinput_set_bit(arg, swbit, SW_MAX);
+		goto out;
+
+	case UI_SET_PROPBIT:
+		retval = uinput_set_bit(arg, propbit, INPUT_PROP_MAX);
+		goto out;
+
+	case UI_SET_PHYS:
+		if (udev->state == UIST_CREATED) {
+			retval = -EINVAL;
+			goto out;
+		}
+
+		phys = strndup_user(p, 1024);
+		if (IS_ERR(phys)) {
+			retval = PTR_ERR(phys);
+			goto out;
+		}
+
+		kfree(udev->dev->phys);
+		udev->dev->phys = phys;
+		goto out;
+
+	case UI_BEGIN_FF_UPLOAD:
+		retval = uinput_ff_upload_from_user(p, &ff_up);
+		if (retval)
+			goto out;
+
+		req = uinput_request_find(udev, ff_up.request_id);
+		if (!req || req->code != UI_FF_UPLOAD ||
+		    !req->u.upload.effect) {
+			retval = -EINVAL;
+			goto out;
+		}
+
+		ff_up.retval = 0;
+		ff_up.effect = *req->u.upload.effect;
+		if (req->u.upload.old)
+			ff_up.old = *req->u.upload.old;
+		else
+			memset(&ff_up.old, 0, sizeof(struct ff_effect));
+
+		retval = uinput_ff_upload_to_user(p, &ff_up);
+		goto out;
+
+	case UI_BEGIN_FF_ERASE:
+		if (copy_from_user(&ff_erase, p, sizeof(ff_erase))) {
+			retval = -EFAULT;
+			goto out;
+		}
+
+		req = uinput_request_find(udev, ff_erase.request_id);
+		if (!req || req->code != UI_FF_ERASE) {
+			retval = -EINVAL;
+			goto out;
+		}
+
+		ff_erase.retval = 0;
+		ff_erase.effect_id = req->u.effect_id;
+		if (copy_to_user(p, &ff_erase, sizeof(ff_erase))) {
+			retval = -EFAULT;
+			goto out;
+		}
+
+		goto out;
+
+	case UI_END_FF_UPLOAD:
+		retval = uinput_ff_upload_from_user(p, &ff_up);
+		if (retval)
+			goto out;
+
+		req = uinput_request_find(udev, ff_up.request_id);
+		if (!req || req->code != UI_FF_UPLOAD ||
+		    !req->u.upload.effect) {
+			retval = -EINVAL;
+			goto out;
+		}
+
+		req->retval = ff_up.retval;
+		complete(&req->done);
+		goto out;
+
+	case UI_END_FF_ERASE:
+		if (copy_from_user(&ff_erase, p, sizeof(ff_erase))) {
+			retval = -EFAULT;
+			goto out;
+		}
+
+		req = uinput_request_find(udev, ff_erase.request_id);
+		if (!req || req->code != UI_FF_ERASE) {
+			retval = -EINVAL;
+			goto out;
+		}
+
+		req->retval = ff_erase.retval;
+		complete(&req->done);
+		goto out;
+	}
+
+	size = _IOC_SIZE(cmd);
+
+	/* Now check variable-length commands */
+	switch (cmd & ~IOCSIZE_MASK) {
+	case UI_GET_SYSNAME(0):
+		if (udev->state != UIST_CREATED) {
+			retval = -ENOENT;
+			goto out;
+		}
+		name = dev_name(&udev->dev->dev);
+		retval = uinput_str_to_user(p, name, size);
+		goto out;
+
+	case UI_ABS_SETUP & ~IOCSIZE_MASK:
+		retval = uinput_abs_setup(udev, p, size);
+		goto out;
+	}
+
+	retval = -EINVAL;
+ out:
+	mutex_unlock(&udev->mutex);
+	return retval;
+}
+
+static long uinput_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+	return uinput_ioctl_handler(file, cmd, arg, (void __user *)arg);
+}
+
+#ifdef CONFIG_COMPAT
+
+/*
+ * These IOCTLs change their size and thus their numbers between
+ * 32 and 64 bits.
+ */
+#define UI_SET_PHYS_COMPAT		\
+	_IOW(UINPUT_IOCTL_BASE, 108, compat_uptr_t)
+#define UI_BEGIN_FF_UPLOAD_COMPAT	\
+	_IOWR(UINPUT_IOCTL_BASE, 200, struct uinput_ff_upload_compat)
+#define UI_END_FF_UPLOAD_COMPAT		\
+	_IOW(UINPUT_IOCTL_BASE, 201, struct uinput_ff_upload_compat)
+
+static long uinput_compat_ioctl(struct file *file,
+				unsigned int cmd, unsigned long arg)
+{
+	switch (cmd) {
+	case UI_SET_PHYS_COMPAT:
+		cmd = UI_SET_PHYS;
+		break;
+	case UI_BEGIN_FF_UPLOAD_COMPAT:
+		cmd = UI_BEGIN_FF_UPLOAD;
+		break;
+	case UI_END_FF_UPLOAD_COMPAT:
+		cmd = UI_END_FF_UPLOAD;
+		break;
+	}
+
+	return uinput_ioctl_handler(file, cmd, arg, compat_ptr(arg));
+}
+#endif
+
+static const struct file_operations uinput_fops = {
+	.owner		= THIS_MODULE,
+	.open		= uinput_open,
+	.release	= uinput_release,
+	.read		= uinput_read,
+	.write		= uinput_write,
+	.poll		= uinput_poll,
+	.unlocked_ioctl	= uinput_ioctl,
+#ifdef CONFIG_COMPAT
+	.compat_ioctl	= uinput_compat_ioctl,
+#endif
+	.llseek		= no_llseek,
+};
+
+static struct miscdevice uinput_misc = {
+	.fops		= &uinput_fops,
+	.minor		= UINPUT_MINOR,
+	.name		= UINPUT_NAME,
+};
+module_misc_device(uinput_misc);
+
+MODULE_ALIAS_MISCDEV(UINPUT_MINOR);
+MODULE_ALIAS("devname:" UINPUT_NAME);
+
+MODULE_AUTHOR("Aristeu Sergio Rozanski Filho");
+MODULE_DESCRIPTION("User level driver support for input subsystem");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/misc/wistron_btns.c b/drivers/input/misc/wistron_btns.c
new file mode 100644
index 000000000..80dfd72a0
--- /dev/null
+++ b/drivers/input/misc/wistron_btns.c
@@ -0,0 +1,1395 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Wistron laptop button driver
+ * Copyright (C) 2005 Miloslav Trmac <mitr@volny.cz>
+ * Copyright (C) 2005 Bernhard Rosenkraenzer <bero@arklinux.org>
+ * Copyright (C) 2005 Dmitry Torokhov <dtor@mail.ru>
+ */
+#include <linux/io.h>
+#include <linux/dmi.h>
+#include <linux/init.h>
+#include <linux/input.h>
+#include <linux/input/sparse-keymap.h>
+#include <linux/interrupt.h>
+#include <linux/jiffies.h>
+#include <linux/kernel.h>
+#include <linux/mc146818rtc.h>
+#include <linux/module.h>
+#include <linux/preempt.h>
+#include <linux/string.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/platform_device.h>
+#include <linux/leds.h>
+
+/* How often we poll keys - msecs */
+#define POLL_INTERVAL_DEFAULT	500 /* when idle */
+#define POLL_INTERVAL_BURST	100 /* when a key was recently pressed */
+
+/* BIOS subsystem IDs */
+#define WIFI		0x35
+#define BLUETOOTH	0x34
+#define MAIL_LED	0x31
+
+MODULE_AUTHOR("Miloslav Trmac <mitr@volny.cz>");
+MODULE_DESCRIPTION("Wistron laptop button driver");
+MODULE_LICENSE("GPL v2");
+
+static bool force; /* = 0; */
+module_param(force, bool, 0);
+MODULE_PARM_DESC(force, "Load even if computer is not in database");
+
+static char *keymap_name; /* = NULL; */
+module_param_named(keymap, keymap_name, charp, 0);
+MODULE_PARM_DESC(keymap, "Keymap name, if it can't be autodetected [generic, 1557/MS2141]");
+
+static struct platform_device *wistron_device;
+
+ /* BIOS interface implementation */
+
+static void __iomem *bios_entry_point; /* BIOS routine entry point */
+static void __iomem *bios_code_map_base;
+static void __iomem *bios_data_map_base;
+
+static u8 cmos_address;
+
+struct regs {
+	u32 eax, ebx, ecx;
+};
+
+static void call_bios(struct regs *regs)
+{
+	unsigned long flags;
+
+	preempt_disable();
+	local_irq_save(flags);
+	asm volatile ("pushl %%ebp;"
+		      "movl %7, %%ebp;"
+		      "call *%6;"
+		      "popl %%ebp"
+		      : "=a" (regs->eax), "=b" (regs->ebx), "=c" (regs->ecx)
+		      : "0" (regs->eax), "1" (regs->ebx), "2" (regs->ecx),
+			"m" (bios_entry_point), "m" (bios_data_map_base)
+		      : "edx", "edi", "esi", "memory");
+	local_irq_restore(flags);
+	preempt_enable();
+}
+
+static ssize_t __init locate_wistron_bios(void __iomem *base)
+{
+	static unsigned char __initdata signature[] =
+		{ 0x42, 0x21, 0x55, 0x30 };
+	ssize_t offset;
+
+	for (offset = 0; offset < 0x10000; offset += 0x10) {
+		if (check_signature(base + offset, signature,
+				    sizeof(signature)) != 0)
+			return offset;
+	}
+	return -1;
+}
+
+static int __init map_bios(void)
+{
+	void __iomem *base;
+	ssize_t offset;
+	u32 entry_point;
+
+	base = ioremap(0xF0000, 0x10000); /* Can't fail */
+	offset = locate_wistron_bios(base);
+	if (offset < 0) {
+		printk(KERN_ERR "wistron_btns: BIOS entry point not found\n");
+		iounmap(base);
+		return -ENODEV;
+	}
+
+	entry_point = readl(base + offset + 5);
+	printk(KERN_DEBUG
+		"wistron_btns: BIOS signature found at %p, entry point %08X\n",
+		base + offset, entry_point);
+
+	if (entry_point >= 0xF0000) {
+		bios_code_map_base = base;
+		bios_entry_point = bios_code_map_base + (entry_point & 0xFFFF);
+	} else {
+		iounmap(base);
+		bios_code_map_base = ioremap(entry_point & ~0x3FFF, 0x4000);
+		if (bios_code_map_base == NULL) {
+			printk(KERN_ERR
+				"wistron_btns: Can't map BIOS code at %08X\n",
+				entry_point & ~0x3FFF);
+			goto err;
+		}
+		bios_entry_point = bios_code_map_base + (entry_point & 0x3FFF);
+	}
+	/* The Windows driver maps 0x10000 bytes, we keep only one page... */
+	bios_data_map_base = ioremap(0x400, 0xc00);
+	if (bios_data_map_base == NULL) {
+		printk(KERN_ERR "wistron_btns: Can't map BIOS data\n");
+		goto err_code;
+	}
+	return 0;
+
+err_code:
+	iounmap(bios_code_map_base);
+err:
+	return -ENOMEM;
+}
+
+static inline void unmap_bios(void)
+{
+	iounmap(bios_code_map_base);
+	iounmap(bios_data_map_base);
+}
+
+ /* BIOS calls */
+
+static u16 bios_pop_queue(void)
+{
+	struct regs regs;
+
+	memset(&regs, 0, sizeof (regs));
+	regs.eax = 0x9610;
+	regs.ebx = 0x061C;
+	regs.ecx = 0x0000;
+	call_bios(&regs);
+
+	return regs.eax;
+}
+
+static void bios_attach(void)
+{
+	struct regs regs;
+
+	memset(&regs, 0, sizeof (regs));
+	regs.eax = 0x9610;
+	regs.ebx = 0x012E;
+	call_bios(&regs);
+}
+
+static void bios_detach(void)
+{
+	struct regs regs;
+
+	memset(&regs, 0, sizeof (regs));
+	regs.eax = 0x9610;
+	regs.ebx = 0x002E;
+	call_bios(&regs);
+}
+
+static u8 bios_get_cmos_address(void)
+{
+	struct regs regs;
+
+	memset(&regs, 0, sizeof (regs));
+	regs.eax = 0x9610;
+	regs.ebx = 0x051C;
+	call_bios(&regs);
+
+	return regs.ecx;
+}
+
+static u16 bios_get_default_setting(u8 subsys)
+{
+	struct regs regs;
+
+	memset(&regs, 0, sizeof (regs));
+	regs.eax = 0x9610;
+	regs.ebx = 0x0200 | subsys;
+	call_bios(&regs);
+
+	return regs.eax;
+}
+
+static void bios_set_state(u8 subsys, int enable)
+{
+	struct regs regs;
+
+	memset(&regs, 0, sizeof (regs));
+	regs.eax = 0x9610;
+	regs.ebx = (enable ? 0x0100 : 0x0000) | subsys;
+	call_bios(&regs);
+}
+
+/* Hardware database */
+
+#define KE_WIFI		(KE_LAST + 1)
+#define KE_BLUETOOTH	(KE_LAST + 2)
+
+#define FE_MAIL_LED 0x01
+#define FE_WIFI_LED 0x02
+#define FE_UNTESTED 0x80
+
+static struct key_entry *keymap; /* = NULL; Current key map */
+static bool have_wifi;
+static bool have_bluetooth;
+static int leds_present;	/* bitmask of leds present */
+
+static int __init dmi_matched(const struct dmi_system_id *dmi)
+{
+	const struct key_entry *key;
+
+	keymap = dmi->driver_data;
+	for (key = keymap; key->type != KE_END; key++) {
+		if (key->type == KE_WIFI)
+			have_wifi = true;
+		else if (key->type == KE_BLUETOOTH)
+			have_bluetooth = true;
+	}
+	leds_present = key->code & (FE_MAIL_LED | FE_WIFI_LED);
+
+	return 1;
+}
+
+static struct key_entry keymap_empty[] __initdata = {
+	{ KE_END, 0 }
+};
+
+static struct key_entry keymap_fs_amilo_pro_v2000[] __initdata = {
+	{ KE_KEY,  0x01, {KEY_HELP} },
+	{ KE_KEY,  0x11, {KEY_PROG1} },
+	{ KE_KEY,  0x12, {KEY_PROG2} },
+	{ KE_WIFI, 0x30 },
+	{ KE_KEY,  0x31, {KEY_MAIL} },
+	{ KE_KEY,  0x36, {KEY_WWW} },
+	{ KE_END,  0 }
+};
+
+static struct key_entry keymap_fs_amilo_pro_v3505[] __initdata = {
+	{ KE_KEY,       0x01, {KEY_HELP} },          /* Fn+F1 */
+	{ KE_KEY,       0x06, {KEY_DISPLAYTOGGLE} }, /* Fn+F4 */
+	{ KE_BLUETOOTH, 0x30 },                      /* Fn+F10 */
+	{ KE_KEY,       0x31, {KEY_MAIL} },          /* mail button */
+	{ KE_KEY,       0x36, {KEY_WWW} },           /* www button */
+	{ KE_WIFI,      0x78 },                      /* satellite dish button */
+	{ KE_END,       0 }
+};
+
+static struct key_entry keymap_fs_amilo_pro_v8210[] __initdata = {
+	{ KE_KEY,       0x01, {KEY_HELP} },          /* Fn+F1 */
+	{ KE_KEY,       0x06, {KEY_DISPLAYTOGGLE} }, /* Fn+F4 */
+	{ KE_BLUETOOTH, 0x30 },                      /* Fn+F10 */
+	{ KE_KEY,       0x31, {KEY_MAIL} },          /* mail button */
+	{ KE_KEY,       0x36, {KEY_WWW} },           /* www button */
+	{ KE_WIFI,      0x78 },                      /* satelite dish button */
+	{ KE_END,       FE_WIFI_LED }
+};
+
+static struct key_entry keymap_fujitsu_n3510[] __initdata = {
+	{ KE_KEY, 0x11, {KEY_PROG1} },
+	{ KE_KEY, 0x12, {KEY_PROG2} },
+	{ KE_KEY, 0x36, {KEY_WWW} },
+	{ KE_KEY, 0x31, {KEY_MAIL} },
+	{ KE_KEY, 0x71, {KEY_STOPCD} },
+	{ KE_KEY, 0x72, {KEY_PLAYPAUSE} },
+	{ KE_KEY, 0x74, {KEY_REWIND} },
+	{ KE_KEY, 0x78, {KEY_FORWARD} },
+	{ KE_END, 0 }
+};
+
+static struct key_entry keymap_wistron_ms2111[] __initdata = {
+	{ KE_KEY,  0x11, {KEY_PROG1} },
+	{ KE_KEY,  0x12, {KEY_PROG2} },
+	{ KE_KEY,  0x13, {KEY_PROG3} },
+	{ KE_KEY,  0x31, {KEY_MAIL} },
+	{ KE_KEY,  0x36, {KEY_WWW} },
+	{ KE_END, FE_MAIL_LED }
+};
+
+static struct key_entry keymap_wistron_md40100[] __initdata = {
+	{ KE_KEY, 0x01, {KEY_HELP} },
+	{ KE_KEY, 0x02, {KEY_CONFIG} },
+	{ KE_KEY, 0x31, {KEY_MAIL} },
+	{ KE_KEY, 0x36, {KEY_WWW} },
+	{ KE_KEY, 0x37, {KEY_DISPLAYTOGGLE} }, /* Display on/off */
+	{ KE_END, FE_MAIL_LED | FE_WIFI_LED | FE_UNTESTED }
+};
+
+static struct key_entry keymap_wistron_ms2141[] __initdata = {
+	{ KE_KEY,  0x11, {KEY_PROG1} },
+	{ KE_KEY,  0x12, {KEY_PROG2} },
+	{ KE_WIFI, 0x30 },
+	{ KE_KEY,  0x22, {KEY_REWIND} },
+	{ KE_KEY,  0x23, {KEY_FORWARD} },
+	{ KE_KEY,  0x24, {KEY_PLAYPAUSE} },
+	{ KE_KEY,  0x25, {KEY_STOPCD} },
+	{ KE_KEY,  0x31, {KEY_MAIL} },
+	{ KE_KEY,  0x36, {KEY_WWW} },
+	{ KE_END,  0 }
+};
+
+static struct key_entry keymap_acer_aspire_1500[] __initdata = {
+	{ KE_KEY, 0x01, {KEY_HELP} },
+	{ KE_KEY, 0x03, {KEY_POWER} },
+	{ KE_KEY, 0x11, {KEY_PROG1} },
+	{ KE_KEY, 0x12, {KEY_PROG2} },
+	{ KE_WIFI, 0x30 },
+	{ KE_KEY, 0x31, {KEY_MAIL} },
+	{ KE_KEY, 0x36, {KEY_WWW} },
+	{ KE_KEY, 0x49, {KEY_CONFIG} },
+	{ KE_BLUETOOTH, 0x44 },
+	{ KE_END, FE_UNTESTED }
+};
+
+static struct key_entry keymap_acer_aspire_1600[] __initdata = {
+	{ KE_KEY, 0x01, {KEY_HELP} },
+	{ KE_KEY, 0x03, {KEY_POWER} },
+	{ KE_KEY, 0x08, {KEY_MUTE} },
+	{ KE_KEY, 0x11, {KEY_PROG1} },
+	{ KE_KEY, 0x12, {KEY_PROG2} },
+	{ KE_KEY, 0x13, {KEY_PROG3} },
+	{ KE_KEY, 0x31, {KEY_MAIL} },
+	{ KE_KEY, 0x36, {KEY_WWW} },
+	{ KE_KEY, 0x49, {KEY_CONFIG} },
+	{ KE_WIFI, 0x30 },
+	{ KE_BLUETOOTH, 0x44 },
+	{ KE_END, FE_MAIL_LED | FE_UNTESTED }
+};
+
+/* 3020 has been tested */
+static struct key_entry keymap_acer_aspire_5020[] __initdata = {
+	{ KE_KEY, 0x01, {KEY_HELP} },
+	{ KE_KEY, 0x03, {KEY_POWER} },
+	{ KE_KEY, 0x05, {KEY_SWITCHVIDEOMODE} }, /* Display selection */
+	{ KE_KEY, 0x11, {KEY_PROG1} },
+	{ KE_KEY, 0x12, {KEY_PROG2} },
+	{ KE_KEY, 0x31, {KEY_MAIL} },
+	{ KE_KEY, 0x36, {KEY_WWW} },
+	{ KE_KEY, 0x6a, {KEY_CONFIG} },
+	{ KE_WIFI, 0x30 },
+	{ KE_BLUETOOTH, 0x44 },
+	{ KE_END, FE_MAIL_LED | FE_UNTESTED }
+};
+
+static struct key_entry keymap_acer_travelmate_2410[] __initdata = {
+	{ KE_KEY, 0x01, {KEY_HELP} },
+	{ KE_KEY, 0x6d, {KEY_POWER} },
+	{ KE_KEY, 0x11, {KEY_PROG1} },
+	{ KE_KEY, 0x12, {KEY_PROG2} },
+	{ KE_KEY, 0x31, {KEY_MAIL} },
+	{ KE_KEY, 0x36, {KEY_WWW} },
+	{ KE_KEY, 0x6a, {KEY_CONFIG} },
+	{ KE_WIFI, 0x30 },
+	{ KE_BLUETOOTH, 0x44 },
+	{ KE_END, FE_MAIL_LED | FE_UNTESTED }
+};
+
+static struct key_entry keymap_acer_travelmate_110[] __initdata = {
+	{ KE_KEY, 0x01, {KEY_HELP} },
+	{ KE_KEY, 0x02, {KEY_CONFIG} },
+	{ KE_KEY, 0x03, {KEY_POWER} },
+	{ KE_KEY, 0x08, {KEY_MUTE} },
+	{ KE_KEY, 0x11, {KEY_PROG1} },
+	{ KE_KEY, 0x12, {KEY_PROG2} },
+	{ KE_KEY, 0x20, {KEY_VOLUMEUP} },
+	{ KE_KEY, 0x21, {KEY_VOLUMEDOWN} },
+	{ KE_KEY, 0x31, {KEY_MAIL} },
+	{ KE_KEY, 0x36, {KEY_WWW} },
+	{ KE_SW, 0x4a, {.sw = {SW_LID, 1}} }, /* lid close */
+	{ KE_SW, 0x4b, {.sw = {SW_LID, 0}} }, /* lid open */
+	{ KE_WIFI, 0x30 },
+	{ KE_END, FE_MAIL_LED | FE_UNTESTED }
+};
+
+static struct key_entry keymap_acer_travelmate_300[] __initdata = {
+	{ KE_KEY, 0x01, {KEY_HELP} },
+	{ KE_KEY, 0x02, {KEY_CONFIG} },
+	{ KE_KEY, 0x03, {KEY_POWER} },
+	{ KE_KEY, 0x08, {KEY_MUTE} },
+	{ KE_KEY, 0x11, {KEY_PROG1} },
+	{ KE_KEY, 0x12, {KEY_PROG2} },
+	{ KE_KEY, 0x20, {KEY_VOLUMEUP} },
+	{ KE_KEY, 0x21, {KEY_VOLUMEDOWN} },
+	{ KE_KEY, 0x31, {KEY_MAIL} },
+	{ KE_KEY, 0x36, {KEY_WWW} },
+	{ KE_WIFI, 0x30 },
+	{ KE_BLUETOOTH, 0x44 },
+	{ KE_END, FE_MAIL_LED | FE_UNTESTED }
+};
+
+static struct key_entry keymap_acer_travelmate_380[] __initdata = {
+	{ KE_KEY, 0x01, {KEY_HELP} },
+	{ KE_KEY, 0x02, {KEY_CONFIG} },
+	{ KE_KEY, 0x03, {KEY_POWER} }, /* not 370 */
+	{ KE_KEY, 0x11, {KEY_PROG1} },
+	{ KE_KEY, 0x12, {KEY_PROG2} },
+	{ KE_KEY, 0x13, {KEY_PROG3} },
+	{ KE_KEY, 0x31, {KEY_MAIL} },
+	{ KE_KEY, 0x36, {KEY_WWW} },
+	{ KE_WIFI, 0x30 },
+	{ KE_END, FE_MAIL_LED | FE_UNTESTED }
+};
+
+/* unusual map */
+static struct key_entry keymap_acer_travelmate_220[] __initdata = {
+	{ KE_KEY, 0x01, {KEY_HELP} },
+	{ KE_KEY, 0x02, {KEY_CONFIG} },
+	{ KE_KEY, 0x11, {KEY_MAIL} },
+	{ KE_KEY, 0x12, {KEY_WWW} },
+	{ KE_KEY, 0x13, {KEY_PROG2} },
+	{ KE_KEY, 0x31, {KEY_PROG1} },
+	{ KE_END, FE_WIFI_LED | FE_UNTESTED }
+};
+
+static struct key_entry keymap_acer_travelmate_230[] __initdata = {
+	{ KE_KEY, 0x01, {KEY_HELP} },
+	{ KE_KEY, 0x02, {KEY_CONFIG} },
+	{ KE_KEY, 0x11, {KEY_PROG1} },
+	{ KE_KEY, 0x12, {KEY_PROG2} },
+	{ KE_KEY, 0x31, {KEY_MAIL} },
+	{ KE_KEY, 0x36, {KEY_WWW} },
+	{ KE_END, FE_WIFI_LED | FE_UNTESTED }
+};
+
+static struct key_entry keymap_acer_travelmate_240[] __initdata = {
+	{ KE_KEY, 0x01, {KEY_HELP} },
+	{ KE_KEY, 0x02, {KEY_CONFIG} },
+	{ KE_KEY, 0x03, {KEY_POWER} },
+	{ KE_KEY, 0x08, {KEY_MUTE} },
+	{ KE_KEY, 0x31, {KEY_MAIL} },
+	{ KE_KEY, 0x36, {KEY_WWW} },
+	{ KE_KEY, 0x11, {KEY_PROG1} },
+	{ KE_KEY, 0x12, {KEY_PROG2} },
+	{ KE_BLUETOOTH, 0x44 },
+	{ KE_WIFI, 0x30 },
+	{ KE_END, FE_UNTESTED }
+};
+
+static struct key_entry keymap_acer_travelmate_350[] __initdata = {
+	{ KE_KEY, 0x01, {KEY_HELP} },
+	{ KE_KEY, 0x02, {KEY_CONFIG} },
+	{ KE_KEY, 0x11, {KEY_PROG1} },
+	{ KE_KEY, 0x12, {KEY_PROG2} },
+	{ KE_KEY, 0x13, {KEY_MAIL} },
+	{ KE_KEY, 0x14, {KEY_PROG3} },
+	{ KE_KEY, 0x15, {KEY_WWW} },
+	{ KE_END, FE_MAIL_LED | FE_WIFI_LED | FE_UNTESTED }
+};
+
+static struct key_entry keymap_acer_travelmate_360[] __initdata = {
+	{ KE_KEY, 0x01, {KEY_HELP} },
+	{ KE_KEY, 0x02, {KEY_CONFIG} },
+	{ KE_KEY, 0x11, {KEY_PROG1} },
+	{ KE_KEY, 0x12, {KEY_PROG2} },
+	{ KE_KEY, 0x13, {KEY_MAIL} },
+	{ KE_KEY, 0x14, {KEY_PROG3} },
+	{ KE_KEY, 0x15, {KEY_WWW} },
+	{ KE_KEY, 0x40, {KEY_WLAN} },
+	{ KE_END, FE_WIFI_LED | FE_UNTESTED } /* no mail led */
+};
+
+/* Wifi subsystem only activates the led. Therefore we need to pass
+ * wifi event as a normal key, then userspace can really change the wifi state.
+ * TODO we need to export led state to userspace (wifi and mail) */
+static struct key_entry keymap_acer_travelmate_610[] __initdata = {
+	{ KE_KEY, 0x01, {KEY_HELP} },
+	{ KE_KEY, 0x02, {KEY_CONFIG} },
+	{ KE_KEY, 0x11, {KEY_PROG1} },
+	{ KE_KEY, 0x12, {KEY_PROG2} },
+	{ KE_KEY, 0x13, {KEY_PROG3} },
+	{ KE_KEY, 0x14, {KEY_MAIL} },
+	{ KE_KEY, 0x15, {KEY_WWW} },
+	{ KE_KEY, 0x40, {KEY_WLAN} },
+	{ KE_END, FE_MAIL_LED | FE_WIFI_LED }
+};
+
+static struct key_entry keymap_acer_travelmate_630[] __initdata = {
+	{ KE_KEY, 0x01, {KEY_HELP} },
+	{ KE_KEY, 0x02, {KEY_CONFIG} },
+	{ KE_KEY, 0x03, {KEY_POWER} },
+	{ KE_KEY, 0x08, {KEY_MUTE} }, /* not 620 */
+	{ KE_KEY, 0x11, {KEY_PROG1} },
+	{ KE_KEY, 0x12, {KEY_PROG2} },
+	{ KE_KEY, 0x13, {KEY_PROG3} },
+	{ KE_KEY, 0x20, {KEY_VOLUMEUP} },
+	{ KE_KEY, 0x21, {KEY_VOLUMEDOWN} },
+	{ KE_KEY, 0x31, {KEY_MAIL} },
+	{ KE_KEY, 0x36, {KEY_WWW} },
+	{ KE_WIFI, 0x30 },
+	{ KE_END, FE_MAIL_LED | FE_UNTESTED }
+};
+
+static struct key_entry keymap_aopen_1559as[] __initdata = {
+	{ KE_KEY,  0x01, {KEY_HELP} },
+	{ KE_KEY,  0x06, {KEY_PROG3} },
+	{ KE_KEY,  0x11, {KEY_PROG1} },
+	{ KE_KEY,  0x12, {KEY_PROG2} },
+	{ KE_WIFI, 0x30 },
+	{ KE_KEY,  0x31, {KEY_MAIL} },
+	{ KE_KEY,  0x36, {KEY_WWW} },
+	{ KE_END,  0 },
+};
+
+static struct key_entry keymap_fs_amilo_d88x0[] __initdata = {
+	{ KE_KEY, 0x01, {KEY_HELP} },
+	{ KE_KEY, 0x08, {KEY_MUTE} },
+	{ KE_KEY, 0x31, {KEY_MAIL} },
+	{ KE_KEY, 0x36, {KEY_WWW} },
+	{ KE_KEY, 0x11, {KEY_PROG1} },
+	{ KE_KEY, 0x12, {KEY_PROG2} },
+	{ KE_KEY, 0x13, {KEY_PROG3} },
+	{ KE_END, FE_MAIL_LED | FE_WIFI_LED | FE_UNTESTED }
+};
+
+static struct key_entry keymap_wistron_md2900[] __initdata = {
+	{ KE_KEY, 0x01, {KEY_HELP} },
+	{ KE_KEY, 0x02, {KEY_CONFIG} },
+	{ KE_KEY, 0x11, {KEY_PROG1} },
+	{ KE_KEY, 0x12, {KEY_PROG2} },
+	{ KE_KEY, 0x31, {KEY_MAIL} },
+	{ KE_KEY, 0x36, {KEY_WWW} },
+	{ KE_WIFI, 0x30 },
+	{ KE_END, FE_MAIL_LED | FE_UNTESTED }
+};
+
+static struct key_entry keymap_wistron_md96500[] __initdata = {
+	{ KE_KEY, 0x01, {KEY_HELP} },
+	{ KE_KEY, 0x02, {KEY_CONFIG} },
+	{ KE_KEY, 0x05, {KEY_SWITCHVIDEOMODE} }, /* Display selection */
+	{ KE_KEY, 0x06, {KEY_DISPLAYTOGGLE} }, /* Display on/off */
+	{ KE_KEY, 0x08, {KEY_MUTE} },
+	{ KE_KEY, 0x11, {KEY_PROG1} },
+	{ KE_KEY, 0x12, {KEY_PROG2} },
+	{ KE_KEY, 0x20, {KEY_VOLUMEUP} },
+	{ KE_KEY, 0x21, {KEY_VOLUMEDOWN} },
+	{ KE_KEY, 0x22, {KEY_REWIND} },
+	{ KE_KEY, 0x23, {KEY_FORWARD} },
+	{ KE_KEY, 0x24, {KEY_PLAYPAUSE} },
+	{ KE_KEY, 0x25, {KEY_STOPCD} },
+	{ KE_KEY, 0x31, {KEY_MAIL} },
+	{ KE_KEY, 0x36, {KEY_WWW} },
+	{ KE_WIFI, 0x30 },
+	{ KE_BLUETOOTH, 0x44 },
+	{ KE_END, 0 }
+};
+
+static struct key_entry keymap_wistron_generic[] __initdata = {
+	{ KE_KEY, 0x01, {KEY_HELP} },
+	{ KE_KEY, 0x02, {KEY_CONFIG} },
+	{ KE_KEY, 0x03, {KEY_POWER} },
+	{ KE_KEY, 0x05, {KEY_SWITCHVIDEOMODE} }, /* Display selection */
+	{ KE_KEY, 0x06, {KEY_DISPLAYTOGGLE} }, /* Display on/off */
+	{ KE_KEY, 0x08, {KEY_MUTE} },
+	{ KE_KEY, 0x11, {KEY_PROG1} },
+	{ KE_KEY, 0x12, {KEY_PROG2} },
+	{ KE_KEY, 0x13, {KEY_PROG3} },
+	{ KE_KEY, 0x14, {KEY_MAIL} },
+	{ KE_KEY, 0x15, {KEY_WWW} },
+	{ KE_KEY, 0x20, {KEY_VOLUMEUP} },
+	{ KE_KEY, 0x21, {KEY_VOLUMEDOWN} },
+	{ KE_KEY, 0x22, {KEY_REWIND} },
+	{ KE_KEY, 0x23, {KEY_FORWARD} },
+	{ KE_KEY, 0x24, {KEY_PLAYPAUSE} },
+	{ KE_KEY, 0x25, {KEY_STOPCD} },
+	{ KE_KEY, 0x31, {KEY_MAIL} },
+	{ KE_KEY, 0x36, {KEY_WWW} },
+	{ KE_KEY, 0x37, {KEY_DISPLAYTOGGLE} }, /* Display on/off */
+	{ KE_KEY, 0x40, {KEY_WLAN} },
+	{ KE_KEY, 0x49, {KEY_CONFIG} },
+	{ KE_SW, 0x4a, {.sw = {SW_LID, 1}} }, /* lid close */
+	{ KE_SW, 0x4b, {.sw = {SW_LID, 0}} }, /* lid open */
+	{ KE_KEY, 0x6a, {KEY_CONFIG} },
+	{ KE_KEY, 0x6d, {KEY_POWER} },
+	{ KE_KEY, 0x71, {KEY_STOPCD} },
+	{ KE_KEY, 0x72, {KEY_PLAYPAUSE} },
+	{ KE_KEY, 0x74, {KEY_REWIND} },
+	{ KE_KEY, 0x78, {KEY_FORWARD} },
+	{ KE_WIFI, 0x30 },
+	{ KE_BLUETOOTH, 0x44 },
+	{ KE_END, 0 }
+};
+
+static struct key_entry keymap_aopen_1557[] __initdata = {
+	{ KE_KEY,  0x01, {KEY_HELP} },
+	{ KE_KEY,  0x11, {KEY_PROG1} },
+	{ KE_KEY,  0x12, {KEY_PROG2} },
+	{ KE_WIFI, 0x30 },
+	{ KE_KEY,  0x22, {KEY_REWIND} },
+	{ KE_KEY,  0x23, {KEY_FORWARD} },
+	{ KE_KEY,  0x24, {KEY_PLAYPAUSE} },
+	{ KE_KEY,  0x25, {KEY_STOPCD} },
+	{ KE_KEY,  0x31, {KEY_MAIL} },
+	{ KE_KEY,  0x36, {KEY_WWW} },
+	{ KE_END,  0 }
+};
+
+static struct key_entry keymap_prestigio[] __initdata = {
+	{ KE_KEY,  0x11, {KEY_PROG1} },
+	{ KE_KEY,  0x12, {KEY_PROG2} },
+	{ KE_WIFI, 0x30 },
+	{ KE_KEY,  0x22, {KEY_REWIND} },
+	{ KE_KEY,  0x23, {KEY_FORWARD} },
+	{ KE_KEY,  0x24, {KEY_PLAYPAUSE} },
+	{ KE_KEY,  0x25, {KEY_STOPCD} },
+	{ KE_KEY,  0x31, {KEY_MAIL} },
+	{ KE_KEY,  0x36, {KEY_WWW} },
+	{ KE_END,  0 }
+};
+
+
+/*
+ * If your machine is not here (which is currently rather likely), please send
+ * a list of buttons and their key codes (reported when loading this module
+ * with force=1) and the output of dmidecode to $MODULE_AUTHOR.
+ */
+static const struct dmi_system_id dmi_ids[] __initconst = {
+	{
+		/* Fujitsu-Siemens Amilo Pro V2000 */
+		.callback = dmi_matched,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pro V2000"),
+		},
+		.driver_data = keymap_fs_amilo_pro_v2000
+	},
+	{
+		/* Fujitsu-Siemens Amilo Pro Edition V3505 */
+		.callback = dmi_matched,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pro Edition V3505"),
+		},
+		.driver_data = keymap_fs_amilo_pro_v3505
+	},
+	{
+		/* Fujitsu-Siemens Amilo Pro Edition V8210 */
+		.callback = dmi_matched,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pro Series V8210"),
+		},
+		.driver_data = keymap_fs_amilo_pro_v8210
+	},
+	{
+		/* Fujitsu-Siemens Amilo M7400 */
+		.callback = dmi_matched,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "AMILO M        "),
+		},
+		.driver_data = keymap_fs_amilo_pro_v2000
+	},
+	{
+		/* Maxdata Pro 7000 DX */
+		.callback = dmi_matched,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "MAXDATA"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "Pro 7000"),
+		},
+		.driver_data = keymap_fs_amilo_pro_v2000
+	},
+	{
+		/* Fujitsu N3510 */
+		.callback = dmi_matched,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "N3510"),
+		},
+		.driver_data = keymap_fujitsu_n3510
+	},
+	{
+		/* Acer Aspire 1500 */
+		.callback = dmi_matched,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1500"),
+		},
+		.driver_data = keymap_acer_aspire_1500
+	},
+	{
+		/* Acer Aspire 1600 */
+		.callback = dmi_matched,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1600"),
+		},
+		.driver_data = keymap_acer_aspire_1600
+	},
+	{
+		/* Acer Aspire 3020 */
+		.callback = dmi_matched,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3020"),
+		},
+		.driver_data = keymap_acer_aspire_5020
+	},
+	{
+		/* Acer Aspire 5020 */
+		.callback = dmi_matched,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5020"),
+		},
+		.driver_data = keymap_acer_aspire_5020
+	},
+	{
+		/* Acer TravelMate 2100 */
+		.callback = dmi_matched,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2100"),
+		},
+		.driver_data = keymap_acer_aspire_5020
+	},
+	{
+		/* Acer TravelMate 2410 */
+		.callback = dmi_matched,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2410"),
+		},
+		.driver_data = keymap_acer_travelmate_2410
+	},
+	{
+		/* Acer TravelMate C300 */
+		.callback = dmi_matched,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate C300"),
+		},
+		.driver_data = keymap_acer_travelmate_300
+	},
+	{
+		/* Acer TravelMate C100 */
+		.callback = dmi_matched,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate C100"),
+		},
+		.driver_data = keymap_acer_travelmate_300
+	},
+	{
+		/* Acer TravelMate C110 */
+		.callback = dmi_matched,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate C110"),
+		},
+		.driver_data = keymap_acer_travelmate_110
+	},
+	{
+		/* Acer TravelMate 380 */
+		.callback = dmi_matched,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 380"),
+		},
+		.driver_data = keymap_acer_travelmate_380
+	},
+	{
+		/* Acer TravelMate 370 */
+		.callback = dmi_matched,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 370"),
+		},
+		.driver_data = keymap_acer_travelmate_380 /* keyboard minus 1 key */
+	},
+	{
+		/* Acer TravelMate 220 */
+		.callback = dmi_matched,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 220"),
+		},
+		.driver_data = keymap_acer_travelmate_220
+	},
+	{
+		/* Acer TravelMate 260 */
+		.callback = dmi_matched,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 260"),
+		},
+		.driver_data = keymap_acer_travelmate_220
+	},
+	{
+		/* Acer TravelMate 230 */
+		.callback = dmi_matched,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 230"),
+			/* acerhk looks for "TravelMate F4..." ?! */
+		},
+		.driver_data = keymap_acer_travelmate_230
+	},
+	{
+		/* Acer TravelMate 280 */
+		.callback = dmi_matched,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 280"),
+		},
+		.driver_data = keymap_acer_travelmate_230
+	},
+	{
+		/* Acer TravelMate 240 */
+		.callback = dmi_matched,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 240"),
+		},
+		.driver_data = keymap_acer_travelmate_240
+	},
+	{
+		/* Acer TravelMate 250 */
+		.callback = dmi_matched,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 250"),
+		},
+		.driver_data = keymap_acer_travelmate_240
+	},
+	{
+		/* Acer TravelMate 2424NWXCi */
+		.callback = dmi_matched,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2420"),
+		},
+		.driver_data = keymap_acer_travelmate_240
+	},
+	{
+		/* Acer TravelMate 350 */
+		.callback = dmi_matched,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 350"),
+		},
+		.driver_data = keymap_acer_travelmate_350
+	},
+	{
+		/* Acer TravelMate 360 */
+		.callback = dmi_matched,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"),
+		},
+		.driver_data = keymap_acer_travelmate_360
+	},
+	{
+		/* Acer TravelMate 610 */
+		.callback = dmi_matched,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "ACER"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 610"),
+		},
+		.driver_data = keymap_acer_travelmate_610
+	},
+	{
+		/* Acer TravelMate 620 */
+		.callback = dmi_matched,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 620"),
+		},
+		.driver_data = keymap_acer_travelmate_630
+	},
+	{
+		/* Acer TravelMate 630 */
+		.callback = dmi_matched,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 630"),
+		},
+		.driver_data = keymap_acer_travelmate_630
+	},
+	{
+		/* AOpen 1559AS */
+		.callback = dmi_matched,
+		.matches = {
+			DMI_MATCH(DMI_PRODUCT_NAME, "E2U"),
+			DMI_MATCH(DMI_BOARD_NAME, "E2U"),
+		},
+		.driver_data = keymap_aopen_1559as
+	},
+	{
+		/* Medion MD 9783 */
+		.callback = dmi_matched,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "MEDIONNB"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "MD 9783"),
+		},
+		.driver_data = keymap_wistron_ms2111
+	},
+	{
+		/* Medion MD 40100 */
+		.callback = dmi_matched,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "MEDIONNB"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "WID2000"),
+		},
+		.driver_data = keymap_wistron_md40100
+	},
+	{
+		/* Medion MD 2900 */
+		.callback = dmi_matched,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "MEDIONNB"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "WIM 2000"),
+		},
+		.driver_data = keymap_wistron_md2900
+	},
+	{
+		/* Medion MD 42200 */
+		.callback = dmi_matched,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Medion"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "WIM 2030"),
+		},
+		.driver_data = keymap_fs_amilo_pro_v2000
+	},
+	{
+		/* Medion MD 96500 */
+		.callback = dmi_matched,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "MEDIONPC"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "WIM 2040"),
+		},
+		.driver_data = keymap_wistron_md96500
+	},
+	{
+		/* Medion MD 95400 */
+		.callback = dmi_matched,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "MEDIONPC"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "WIM 2050"),
+		},
+		.driver_data = keymap_wistron_md96500
+	},
+	{
+		/* Fujitsu Siemens Amilo D7820 */
+		.callback = dmi_matched,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), /* not sure */
+			DMI_MATCH(DMI_PRODUCT_NAME, "Amilo D"),
+		},
+		.driver_data = keymap_fs_amilo_d88x0
+	},
+	{
+		/* Fujitsu Siemens Amilo D88x0 */
+		.callback = dmi_matched,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "AMILO D"),
+		},
+		.driver_data = keymap_fs_amilo_d88x0
+	},
+	{ NULL, }
+};
+MODULE_DEVICE_TABLE(dmi, dmi_ids);
+
+/* Copy the good keymap, as the original ones are free'd */
+static int __init copy_keymap(void)
+{
+	const struct key_entry *key;
+	struct key_entry *new_keymap;
+	unsigned int length = 1;
+
+	for (key = keymap; key->type != KE_END; key++)
+		length++;
+
+	new_keymap = kmemdup(keymap, length * sizeof(struct key_entry),
+			     GFP_KERNEL);
+	if (!new_keymap)
+		return -ENOMEM;
+
+	keymap = new_keymap;
+
+	return 0;
+}
+
+static int __init select_keymap(void)
+{
+	dmi_check_system(dmi_ids);
+	if (keymap_name != NULL) {
+		if (strcmp (keymap_name, "1557/MS2141") == 0)
+			keymap = keymap_wistron_ms2141;
+		else if (strcmp (keymap_name, "aopen1557") == 0)
+			keymap = keymap_aopen_1557;
+		else if (strcmp (keymap_name, "prestigio") == 0)
+			keymap = keymap_prestigio;
+		else if (strcmp (keymap_name, "generic") == 0)
+			keymap = keymap_wistron_generic;
+		else {
+			printk(KERN_ERR "wistron_btns: Keymap unknown\n");
+			return -EINVAL;
+		}
+	}
+	if (keymap == NULL) {
+		if (!force) {
+			printk(KERN_ERR "wistron_btns: System unknown\n");
+			return -ENODEV;
+		}
+		keymap = keymap_empty;
+	}
+
+	return copy_keymap();
+}
+
+ /* Input layer interface */
+
+static struct input_dev *wistron_idev;
+static unsigned long jiffies_last_press;
+static bool wifi_enabled;
+static bool bluetooth_enabled;
+
+ /* led management */
+static void wistron_mail_led_set(struct led_classdev *led_cdev,
+				enum led_brightness value)
+{
+	bios_set_state(MAIL_LED, (value != LED_OFF) ? 1 : 0);
+}
+
+/* same as setting up wifi card, but for laptops on which the led is managed */
+static void wistron_wifi_led_set(struct led_classdev *led_cdev,
+				enum led_brightness value)
+{
+	bios_set_state(WIFI, (value != LED_OFF) ? 1 : 0);
+}
+
+static struct led_classdev wistron_mail_led = {
+	.name			= "wistron:green:mail",
+	.brightness_set		= wistron_mail_led_set,
+};
+
+static struct led_classdev wistron_wifi_led = {
+	.name			= "wistron:red:wifi",
+	.brightness_set		= wistron_wifi_led_set,
+};
+
+static void wistron_led_init(struct device *parent)
+{
+	if (leds_present & FE_WIFI_LED) {
+		u16 wifi = bios_get_default_setting(WIFI);
+		if (wifi & 1) {
+			wistron_wifi_led.brightness = (wifi & 2) ? LED_FULL : LED_OFF;
+			if (led_classdev_register(parent, &wistron_wifi_led))
+				leds_present &= ~FE_WIFI_LED;
+			else
+				bios_set_state(WIFI, wistron_wifi_led.brightness);
+
+		} else
+			leds_present &= ~FE_WIFI_LED;
+	}
+
+	if (leds_present & FE_MAIL_LED) {
+		/* bios_get_default_setting(MAIL) always retuns 0, so just turn the led off */
+		wistron_mail_led.brightness = LED_OFF;
+		if (led_classdev_register(parent, &wistron_mail_led))
+			leds_present &= ~FE_MAIL_LED;
+		else
+			bios_set_state(MAIL_LED, wistron_mail_led.brightness);
+	}
+}
+
+static void wistron_led_remove(void)
+{
+	if (leds_present & FE_MAIL_LED)
+		led_classdev_unregister(&wistron_mail_led);
+
+	if (leds_present & FE_WIFI_LED)
+		led_classdev_unregister(&wistron_wifi_led);
+}
+
+static inline void wistron_led_suspend(void)
+{
+	if (leds_present & FE_MAIL_LED)
+		led_classdev_suspend(&wistron_mail_led);
+
+	if (leds_present & FE_WIFI_LED)
+		led_classdev_suspend(&wistron_wifi_led);
+}
+
+static inline void wistron_led_resume(void)
+{
+	if (leds_present & FE_MAIL_LED)
+		led_classdev_resume(&wistron_mail_led);
+
+	if (leds_present & FE_WIFI_LED)
+		led_classdev_resume(&wistron_wifi_led);
+}
+
+static void handle_key(u8 code)
+{
+	const struct key_entry *key =
+		sparse_keymap_entry_from_scancode(wistron_idev, code);
+
+	if (key) {
+		switch (key->type) {
+		case KE_WIFI:
+			if (have_wifi) {
+				wifi_enabled = !wifi_enabled;
+				bios_set_state(WIFI, wifi_enabled);
+			}
+			break;
+
+		case KE_BLUETOOTH:
+			if (have_bluetooth) {
+				bluetooth_enabled = !bluetooth_enabled;
+				bios_set_state(BLUETOOTH, bluetooth_enabled);
+			}
+			break;
+
+		default:
+			sparse_keymap_report_entry(wistron_idev, key, 1, true);
+			break;
+		}
+		jiffies_last_press = jiffies;
+	} else {
+		printk(KERN_NOTICE
+			"wistron_btns: Unknown key code %02X\n", code);
+	}
+}
+
+static void poll_bios(bool discard)
+{
+	u8 qlen;
+	u16 val;
+
+	for (;;) {
+		qlen = CMOS_READ(cmos_address);
+		if (qlen == 0)
+			break;
+		val = bios_pop_queue();
+		if (val != 0 && !discard)
+			handle_key((u8)val);
+	}
+}
+
+static int wistron_flush(struct input_dev *dev)
+{
+	/* Flush stale event queue */
+	poll_bios(true);
+
+	return 0;
+}
+
+static void wistron_poll(struct input_dev *dev)
+{
+	poll_bios(false);
+
+	/* Increase poll frequency if user is currently pressing keys (< 2s ago) */
+	if (time_before(jiffies, jiffies_last_press + 2 * HZ))
+		input_set_poll_interval(dev, POLL_INTERVAL_BURST);
+	else
+		input_set_poll_interval(dev, POLL_INTERVAL_DEFAULT);
+}
+
+static int wistron_setup_keymap(struct input_dev *dev,
+					  struct key_entry *entry)
+{
+	switch (entry->type) {
+
+	/* if wifi or bluetooth are not available, create normal keys */
+	case KE_WIFI:
+		if (!have_wifi) {
+			entry->type = KE_KEY;
+			entry->keycode = KEY_WLAN;
+		}
+		break;
+
+	case KE_BLUETOOTH:
+		if (!have_bluetooth) {
+			entry->type = KE_KEY;
+			entry->keycode = KEY_BLUETOOTH;
+		}
+		break;
+
+	case KE_END:
+		if (entry->code & FE_UNTESTED)
+			printk(KERN_WARNING "Untested laptop multimedia keys, "
+				"please report success or failure to "
+				"eric.piel@tremplin-utc.net\n");
+		break;
+	}
+
+	return 0;
+}
+
+static int setup_input_dev(void)
+{
+	int error;
+
+	wistron_idev = input_allocate_device();
+	if (!wistron_idev)
+		return -ENOMEM;
+
+	wistron_idev->name = "Wistron laptop buttons";
+	wistron_idev->phys = "wistron/input0";
+	wistron_idev->id.bustype = BUS_HOST;
+	wistron_idev->dev.parent = &wistron_device->dev;
+
+	wistron_idev->open = wistron_flush;
+
+	error = sparse_keymap_setup(wistron_idev, keymap, wistron_setup_keymap);
+	if (error)
+		goto err_free_dev;
+
+	error = input_setup_polling(wistron_idev, wistron_poll);
+	if (error)
+		goto err_free_dev;
+
+	input_set_poll_interval(wistron_idev, POLL_INTERVAL_DEFAULT);
+
+	error = input_register_device(wistron_idev);
+	if (error)
+		goto err_free_dev;
+
+	return 0;
+
+ err_free_dev:
+	input_free_device(wistron_idev);
+	return error;
+}
+
+/* Driver core */
+
+static int wistron_probe(struct platform_device *dev)
+{
+	int err;
+
+	bios_attach();
+	cmos_address = bios_get_cmos_address();
+
+	if (have_wifi) {
+		u16 wifi = bios_get_default_setting(WIFI);
+		if (wifi & 1)
+			wifi_enabled = wifi & 2;
+		else
+			have_wifi = 0;
+
+		if (have_wifi)
+			bios_set_state(WIFI, wifi_enabled);
+	}
+
+	if (have_bluetooth) {
+		u16 bt = bios_get_default_setting(BLUETOOTH);
+		if (bt & 1)
+			bluetooth_enabled = bt & 2;
+		else
+			have_bluetooth = false;
+
+		if (have_bluetooth)
+			bios_set_state(BLUETOOTH, bluetooth_enabled);
+	}
+
+	wistron_led_init(&dev->dev);
+
+	err = setup_input_dev();
+	if (err) {
+		bios_detach();
+		return err;
+	}
+
+	return 0;
+}
+
+static int wistron_remove(struct platform_device *dev)
+{
+	wistron_led_remove();
+	input_unregister_device(wistron_idev);
+	bios_detach();
+
+	return 0;
+}
+
+#ifdef CONFIG_PM
+static int wistron_suspend(struct device *dev)
+{
+	if (have_wifi)
+		bios_set_state(WIFI, 0);
+
+	if (have_bluetooth)
+		bios_set_state(BLUETOOTH, 0);
+
+	wistron_led_suspend();
+
+	return 0;
+}
+
+static int wistron_resume(struct device *dev)
+{
+	if (have_wifi)
+		bios_set_state(WIFI, wifi_enabled);
+
+	if (have_bluetooth)
+		bios_set_state(BLUETOOTH, bluetooth_enabled);
+
+	wistron_led_resume();
+
+	poll_bios(true);
+
+	return 0;
+}
+
+static const struct dev_pm_ops wistron_pm_ops = {
+	.suspend	= wistron_suspend,
+	.resume		= wistron_resume,
+	.poweroff	= wistron_suspend,
+	.restore	= wistron_resume,
+};
+#endif
+
+static struct platform_driver wistron_driver = {
+	.driver		= {
+		.name	= "wistron-bios",
+#ifdef CONFIG_PM
+		.pm	= &wistron_pm_ops,
+#endif
+	},
+	.probe		= wistron_probe,
+	.remove		= wistron_remove,
+};
+
+static int __init wb_module_init(void)
+{
+	int err;
+
+	err = select_keymap();
+	if (err)
+		return err;
+
+	err = map_bios();
+	if (err)
+		goto err_free_keymap;
+
+	err = platform_driver_register(&wistron_driver);
+	if (err)
+		goto err_unmap_bios;
+
+	wistron_device = platform_device_alloc("wistron-bios", -1);
+	if (!wistron_device) {
+		err = -ENOMEM;
+		goto err_unregister_driver;
+	}
+
+	err = platform_device_add(wistron_device);
+	if (err)
+		goto err_free_device;
+
+	return 0;
+
+ err_free_device:
+	platform_device_put(wistron_device);
+ err_unregister_driver:
+	platform_driver_unregister(&wistron_driver);
+ err_unmap_bios:
+	unmap_bios();
+ err_free_keymap:
+	kfree(keymap);
+
+	return err;
+}
+
+static void __exit wb_module_exit(void)
+{
+	platform_device_unregister(wistron_device);
+	platform_driver_unregister(&wistron_driver);
+	unmap_bios();
+	kfree(keymap);
+}
+
+module_init(wb_module_init);
+module_exit(wb_module_exit);
diff --git a/drivers/input/misc/wm831x-on.c b/drivers/input/misc/wm831x-on.c
new file mode 100644
index 000000000..a42fe041b
--- /dev/null
+++ b/drivers/input/misc/wm831x-on.c
@@ -0,0 +1,150 @@
+/*
+ * wm831x-on.c - WM831X ON pin driver
+ *
+ * Copyright (C) 2009 Wolfson Microelectronics plc
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License. See the file "COPYING" in the main directory of this
+ * archive for more details.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/workqueue.h>
+#include <linux/mfd/wm831x/core.h>
+
+struct wm831x_on {
+	struct input_dev *dev;
+	struct delayed_work work;
+	struct wm831x *wm831x;
+};
+
+/*
+ * The chip gives us an interrupt when the ON pin is asserted but we
+ * then need to poll to see when the pin is deasserted.
+ */
+static void wm831x_poll_on(struct work_struct *work)
+{
+	struct wm831x_on *wm831x_on = container_of(work, struct wm831x_on,
+						   work.work);
+	struct wm831x *wm831x = wm831x_on->wm831x;
+	int poll, ret;
+
+	ret = wm831x_reg_read(wm831x, WM831X_ON_PIN_CONTROL);
+	if (ret >= 0) {
+		poll = !(ret & WM831X_ON_PIN_STS);
+
+		input_report_key(wm831x_on->dev, KEY_POWER, poll);
+		input_sync(wm831x_on->dev);
+	} else {
+		dev_err(wm831x->dev, "Failed to read ON status: %d\n", ret);
+		poll = 1;
+	}
+
+	if (poll)
+		schedule_delayed_work(&wm831x_on->work, 100);
+}
+
+static irqreturn_t wm831x_on_irq(int irq, void *data)
+{
+	struct wm831x_on *wm831x_on = data;
+
+	schedule_delayed_work(&wm831x_on->work, 0);
+
+	return IRQ_HANDLED;
+}
+
+static int wm831x_on_probe(struct platform_device *pdev)
+{
+	struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent);
+	struct wm831x_on *wm831x_on;
+	int irq = wm831x_irq(wm831x, platform_get_irq(pdev, 0));
+	int ret;
+
+	wm831x_on = devm_kzalloc(&pdev->dev, sizeof(struct wm831x_on),
+				 GFP_KERNEL);
+	if (!wm831x_on) {
+		dev_err(&pdev->dev, "Can't allocate data\n");
+		return -ENOMEM;
+	}
+
+	wm831x_on->wm831x = wm831x;
+	INIT_DELAYED_WORK(&wm831x_on->work, wm831x_poll_on);
+
+	wm831x_on->dev = devm_input_allocate_device(&pdev->dev);
+	if (!wm831x_on->dev) {
+		dev_err(&pdev->dev, "Can't allocate input dev\n");
+		ret = -ENOMEM;
+		goto err;
+	}
+
+	wm831x_on->dev->evbit[0] = BIT_MASK(EV_KEY);
+	wm831x_on->dev->keybit[BIT_WORD(KEY_POWER)] = BIT_MASK(KEY_POWER);
+	wm831x_on->dev->name = "wm831x_on";
+	wm831x_on->dev->phys = "wm831x_on/input0";
+	wm831x_on->dev->dev.parent = &pdev->dev;
+
+	ret = request_threaded_irq(irq, NULL, wm831x_on_irq,
+				   IRQF_TRIGGER_RISING | IRQF_ONESHOT,
+				   "wm831x_on",
+				   wm831x_on);
+	if (ret < 0) {
+		dev_err(&pdev->dev, "Unable to request IRQ: %d\n", ret);
+		goto err_input_dev;
+	}
+	ret = input_register_device(wm831x_on->dev);
+	if (ret) {
+		dev_dbg(&pdev->dev, "Can't register input device: %d\n", ret);
+		goto err_irq;
+	}
+
+	platform_set_drvdata(pdev, wm831x_on);
+
+	return 0;
+
+err_irq:
+	free_irq(irq, wm831x_on);
+err_input_dev:
+err:
+	return ret;
+}
+
+static int wm831x_on_remove(struct platform_device *pdev)
+{
+	struct wm831x_on *wm831x_on = platform_get_drvdata(pdev);
+	int irq = platform_get_irq(pdev, 0);
+
+	free_irq(irq, wm831x_on);
+	cancel_delayed_work_sync(&wm831x_on->work);
+
+	return 0;
+}
+
+static struct platform_driver wm831x_on_driver = {
+	.probe		= wm831x_on_probe,
+	.remove		= wm831x_on_remove,
+	.driver		= {
+		.name	= "wm831x-on",
+	},
+};
+module_platform_driver(wm831x_on_driver);
+
+MODULE_ALIAS("platform:wm831x-on");
+MODULE_DESCRIPTION("WM831x ON pin");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
+
diff --git a/drivers/input/misc/xen-kbdfront.c b/drivers/input/misc/xen-kbdfront.c
new file mode 100644
index 000000000..8d8ebdc20
--- /dev/null
+++ b/drivers/input/misc/xen-kbdfront.c
@@ -0,0 +1,573 @@
+/*
+ * Xen para-virtual input device
+ *
+ * Copyright (C) 2005 Anthony Liguori <aliguori@us.ibm.com>
+ * Copyright (C) 2006-2008 Red Hat, Inc., Markus Armbruster <armbru@redhat.com>
+ *
+ *  Based on linux/drivers/input/mouse/sermouse.c
+ *
+ *  This file is subject to the terms and conditions of the GNU General Public
+ *  License. See the file COPYING in the main directory of this archive for
+ *  more details.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/module.h>
+#include <linux/input.h>
+#include <linux/input/mt.h>
+#include <linux/slab.h>
+
+#include <asm/xen/hypervisor.h>
+
+#include <xen/xen.h>
+#include <xen/events.h>
+#include <xen/page.h>
+#include <xen/grant_table.h>
+#include <xen/interface/grant_table.h>
+#include <xen/interface/io/fbif.h>
+#include <xen/interface/io/kbdif.h>
+#include <xen/xenbus.h>
+#include <xen/platform_pci.h>
+
+struct xenkbd_info {
+	struct input_dev *kbd;
+	struct input_dev *ptr;
+	struct input_dev *mtouch;
+	struct xenkbd_page *page;
+	int gref;
+	int irq;
+	struct xenbus_device *xbdev;
+	char phys[32];
+	/* current MT slot/contact ID we are injecting events in */
+	int mtouch_cur_contact_id;
+};
+
+enum { KPARAM_X, KPARAM_Y, KPARAM_CNT };
+static int ptr_size[KPARAM_CNT] = { XENFB_WIDTH, XENFB_HEIGHT };
+module_param_array(ptr_size, int, NULL, 0444);
+MODULE_PARM_DESC(ptr_size,
+	"Pointing device width, height in pixels (default 800,600)");
+
+static int xenkbd_remove(struct xenbus_device *);
+static int xenkbd_connect_backend(struct xenbus_device *, struct xenkbd_info *);
+static void xenkbd_disconnect_backend(struct xenkbd_info *);
+
+/*
+ * Note: if you need to send out events, see xenfb_do_update() for how
+ * to do that.
+ */
+
+static void xenkbd_handle_motion_event(struct xenkbd_info *info,
+				       struct xenkbd_motion *motion)
+{
+	if (unlikely(!info->ptr))
+		return;
+
+	input_report_rel(info->ptr, REL_X, motion->rel_x);
+	input_report_rel(info->ptr, REL_Y, motion->rel_y);
+	if (motion->rel_z)
+		input_report_rel(info->ptr, REL_WHEEL, -motion->rel_z);
+	input_sync(info->ptr);
+}
+
+static void xenkbd_handle_position_event(struct xenkbd_info *info,
+					 struct xenkbd_position *pos)
+{
+	if (unlikely(!info->ptr))
+		return;
+
+	input_report_abs(info->ptr, ABS_X, pos->abs_x);
+	input_report_abs(info->ptr, ABS_Y, pos->abs_y);
+	if (pos->rel_z)
+		input_report_rel(info->ptr, REL_WHEEL, -pos->rel_z);
+	input_sync(info->ptr);
+}
+
+static void xenkbd_handle_key_event(struct xenkbd_info *info,
+				    struct xenkbd_key *key)
+{
+	struct input_dev *dev;
+	int value = key->pressed;
+
+	if (test_bit(key->keycode, info->ptr->keybit)) {
+		dev = info->ptr;
+	} else if (test_bit(key->keycode, info->kbd->keybit)) {
+		dev = info->kbd;
+		if (key->pressed && test_bit(key->keycode, info->kbd->key))
+			value = 2; /* Mark as autorepeat */
+	} else {
+		pr_warn("unhandled keycode 0x%x\n", key->keycode);
+		return;
+	}
+
+	if (unlikely(!dev))
+		return;
+
+	input_event(dev, EV_KEY, key->keycode, value);
+	input_sync(dev);
+}
+
+static void xenkbd_handle_mt_event(struct xenkbd_info *info,
+				   struct xenkbd_mtouch *mtouch)
+{
+	if (unlikely(!info->mtouch))
+		return;
+
+	if (mtouch->contact_id != info->mtouch_cur_contact_id) {
+		info->mtouch_cur_contact_id = mtouch->contact_id;
+		input_mt_slot(info->mtouch, mtouch->contact_id);
+	}
+
+	switch (mtouch->event_type) {
+	case XENKBD_MT_EV_DOWN:
+		input_mt_report_slot_state(info->mtouch, MT_TOOL_FINGER, true);
+		fallthrough;
+
+	case XENKBD_MT_EV_MOTION:
+		input_report_abs(info->mtouch, ABS_MT_POSITION_X,
+				 mtouch->u.pos.abs_x);
+		input_report_abs(info->mtouch, ABS_MT_POSITION_Y,
+				 mtouch->u.pos.abs_y);
+		break;
+
+	case XENKBD_MT_EV_SHAPE:
+		input_report_abs(info->mtouch, ABS_MT_TOUCH_MAJOR,
+				 mtouch->u.shape.major);
+		input_report_abs(info->mtouch, ABS_MT_TOUCH_MINOR,
+				 mtouch->u.shape.minor);
+		break;
+
+	case XENKBD_MT_EV_ORIENT:
+		input_report_abs(info->mtouch, ABS_MT_ORIENTATION,
+				 mtouch->u.orientation);
+		break;
+
+	case XENKBD_MT_EV_UP:
+		input_mt_report_slot_inactive(info->mtouch);
+		break;
+
+	case XENKBD_MT_EV_SYN:
+		input_mt_sync_frame(info->mtouch);
+		input_sync(info->mtouch);
+		break;
+	}
+}
+
+static void xenkbd_handle_event(struct xenkbd_info *info,
+				union xenkbd_in_event *event)
+{
+	switch (event->type) {
+	case XENKBD_TYPE_MOTION:
+		xenkbd_handle_motion_event(info, &event->motion);
+		break;
+
+	case XENKBD_TYPE_KEY:
+		xenkbd_handle_key_event(info, &event->key);
+		break;
+
+	case XENKBD_TYPE_POS:
+		xenkbd_handle_position_event(info, &event->pos);
+		break;
+
+	case XENKBD_TYPE_MTOUCH:
+		xenkbd_handle_mt_event(info, &event->mtouch);
+		break;
+	}
+}
+
+static irqreturn_t input_handler(int rq, void *dev_id)
+{
+	struct xenkbd_info *info = dev_id;
+	struct xenkbd_page *page = info->page;
+	__u32 cons, prod;
+
+	prod = page->in_prod;
+	if (prod == page->in_cons)
+		return IRQ_HANDLED;
+	rmb();			/* ensure we see ring contents up to prod */
+	for (cons = page->in_cons; cons != prod; cons++)
+		xenkbd_handle_event(info, &XENKBD_IN_RING_REF(page, cons));
+	mb();			/* ensure we got ring contents */
+	page->in_cons = cons;
+	notify_remote_via_irq(info->irq);
+
+	return IRQ_HANDLED;
+}
+
+static int xenkbd_probe(struct xenbus_device *dev,
+				  const struct xenbus_device_id *id)
+{
+	int ret, i;
+	bool with_mtouch, with_kbd, with_ptr;
+	struct xenkbd_info *info;
+	struct input_dev *kbd, *ptr, *mtouch;
+
+	info = kzalloc(sizeof(*info), GFP_KERNEL);
+	if (!info) {
+		xenbus_dev_fatal(dev, -ENOMEM, "allocating info structure");
+		return -ENOMEM;
+	}
+	dev_set_drvdata(&dev->dev, info);
+	info->xbdev = dev;
+	info->irq = -1;
+	info->gref = -1;
+	snprintf(info->phys, sizeof(info->phys), "xenbus/%s", dev->nodename);
+
+	info->page = (void *)__get_free_page(GFP_KERNEL | __GFP_ZERO);
+	if (!info->page)
+		goto error_nomem;
+
+	/*
+	 * The below are reverse logic, e.g. if the feature is set, then
+	 * do not expose the corresponding virtual device.
+	 */
+	with_kbd = !xenbus_read_unsigned(dev->otherend,
+					 XENKBD_FIELD_FEAT_DSBL_KEYBRD, 0);
+
+	with_ptr = !xenbus_read_unsigned(dev->otherend,
+					 XENKBD_FIELD_FEAT_DSBL_POINTER, 0);
+
+	/* Direct logic: if set, then create multi-touch device. */
+	with_mtouch = xenbus_read_unsigned(dev->otherend,
+					   XENKBD_FIELD_FEAT_MTOUCH, 0);
+	if (with_mtouch) {
+		ret = xenbus_write(XBT_NIL, dev->nodename,
+				   XENKBD_FIELD_REQ_MTOUCH, "1");
+		if (ret) {
+			pr_warn("xenkbd: can't request multi-touch");
+			with_mtouch = 0;
+		}
+	}
+
+	/* keyboard */
+	if (with_kbd) {
+		kbd = input_allocate_device();
+		if (!kbd)
+			goto error_nomem;
+		kbd->name = "Xen Virtual Keyboard";
+		kbd->phys = info->phys;
+		kbd->id.bustype = BUS_PCI;
+		kbd->id.vendor = 0x5853;
+		kbd->id.product = 0xffff;
+
+		__set_bit(EV_KEY, kbd->evbit);
+		for (i = KEY_ESC; i < KEY_UNKNOWN; i++)
+			__set_bit(i, kbd->keybit);
+		for (i = KEY_OK; i < KEY_MAX; i++)
+			__set_bit(i, kbd->keybit);
+
+		ret = input_register_device(kbd);
+		if (ret) {
+			input_free_device(kbd);
+			xenbus_dev_fatal(dev, ret,
+					 "input_register_device(kbd)");
+			goto error;
+		}
+		info->kbd = kbd;
+	}
+
+	/* pointing device */
+	if (with_ptr) {
+		unsigned int abs;
+
+		/* Set input abs params to match backend screen res */
+		abs = xenbus_read_unsigned(dev->otherend,
+					   XENKBD_FIELD_FEAT_ABS_POINTER, 0);
+		ptr_size[KPARAM_X] = xenbus_read_unsigned(dev->otherend,
+							  XENKBD_FIELD_WIDTH,
+							  ptr_size[KPARAM_X]);
+		ptr_size[KPARAM_Y] = xenbus_read_unsigned(dev->otherend,
+							  XENKBD_FIELD_HEIGHT,
+							  ptr_size[KPARAM_Y]);
+		if (abs) {
+			ret = xenbus_write(XBT_NIL, dev->nodename,
+					   XENKBD_FIELD_REQ_ABS_POINTER, "1");
+			if (ret) {
+				pr_warn("xenkbd: can't request abs-pointer\n");
+				abs = 0;
+			}
+		}
+
+		ptr = input_allocate_device();
+		if (!ptr)
+			goto error_nomem;
+		ptr->name = "Xen Virtual Pointer";
+		ptr->phys = info->phys;
+		ptr->id.bustype = BUS_PCI;
+		ptr->id.vendor = 0x5853;
+		ptr->id.product = 0xfffe;
+
+		if (abs) {
+			__set_bit(EV_ABS, ptr->evbit);
+			input_set_abs_params(ptr, ABS_X, 0,
+					     ptr_size[KPARAM_X], 0, 0);
+			input_set_abs_params(ptr, ABS_Y, 0,
+					     ptr_size[KPARAM_Y], 0, 0);
+		} else {
+			input_set_capability(ptr, EV_REL, REL_X);
+			input_set_capability(ptr, EV_REL, REL_Y);
+		}
+		input_set_capability(ptr, EV_REL, REL_WHEEL);
+
+		__set_bit(EV_KEY, ptr->evbit);
+		for (i = BTN_LEFT; i <= BTN_TASK; i++)
+			__set_bit(i, ptr->keybit);
+
+		ret = input_register_device(ptr);
+		if (ret) {
+			input_free_device(ptr);
+			xenbus_dev_fatal(dev, ret,
+					 "input_register_device(ptr)");
+			goto error;
+		}
+		info->ptr = ptr;
+	}
+
+	/* multi-touch device */
+	if (with_mtouch) {
+		int num_cont, width, height;
+
+		mtouch = input_allocate_device();
+		if (!mtouch)
+			goto error_nomem;
+
+		num_cont = xenbus_read_unsigned(info->xbdev->otherend,
+						XENKBD_FIELD_MT_NUM_CONTACTS,
+						1);
+		width = xenbus_read_unsigned(info->xbdev->otherend,
+					     XENKBD_FIELD_MT_WIDTH,
+					     XENFB_WIDTH);
+		height = xenbus_read_unsigned(info->xbdev->otherend,
+					      XENKBD_FIELD_MT_HEIGHT,
+					      XENFB_HEIGHT);
+
+		mtouch->name = "Xen Virtual Multi-touch";
+		mtouch->phys = info->phys;
+		mtouch->id.bustype = BUS_PCI;
+		mtouch->id.vendor = 0x5853;
+		mtouch->id.product = 0xfffd;
+
+		input_set_abs_params(mtouch, ABS_MT_TOUCH_MAJOR,
+				     0, 255, 0, 0);
+		input_set_abs_params(mtouch, ABS_MT_POSITION_X,
+				     0, width, 0, 0);
+		input_set_abs_params(mtouch, ABS_MT_POSITION_Y,
+				     0, height, 0, 0);
+
+		ret = input_mt_init_slots(mtouch, num_cont, INPUT_MT_DIRECT);
+		if (ret) {
+			input_free_device(mtouch);
+			xenbus_dev_fatal(info->xbdev, ret,
+					 "input_mt_init_slots");
+			goto error;
+		}
+
+		ret = input_register_device(mtouch);
+		if (ret) {
+			input_free_device(mtouch);
+			xenbus_dev_fatal(info->xbdev, ret,
+					 "input_register_device(mtouch)");
+			goto error;
+		}
+		info->mtouch_cur_contact_id = -1;
+		info->mtouch = mtouch;
+	}
+
+	if (!(with_kbd || with_ptr || with_mtouch)) {
+		ret = -ENXIO;
+		goto error;
+	}
+
+	ret = xenkbd_connect_backend(dev, info);
+	if (ret < 0)
+		goto error;
+
+	return 0;
+
+ error_nomem:
+	ret = -ENOMEM;
+	xenbus_dev_fatal(dev, ret, "allocating device memory");
+ error:
+	xenkbd_remove(dev);
+	return ret;
+}
+
+static int xenkbd_resume(struct xenbus_device *dev)
+{
+	struct xenkbd_info *info = dev_get_drvdata(&dev->dev);
+
+	xenkbd_disconnect_backend(info);
+	memset(info->page, 0, PAGE_SIZE);
+	return xenkbd_connect_backend(dev, info);
+}
+
+static int xenkbd_remove(struct xenbus_device *dev)
+{
+	struct xenkbd_info *info = dev_get_drvdata(&dev->dev);
+
+	xenkbd_disconnect_backend(info);
+	if (info->kbd)
+		input_unregister_device(info->kbd);
+	if (info->ptr)
+		input_unregister_device(info->ptr);
+	if (info->mtouch)
+		input_unregister_device(info->mtouch);
+	free_page((unsigned long)info->page);
+	kfree(info);
+	return 0;
+}
+
+static int xenkbd_connect_backend(struct xenbus_device *dev,
+				  struct xenkbd_info *info)
+{
+	int ret, evtchn;
+	struct xenbus_transaction xbt;
+
+	ret = gnttab_grant_foreign_access(dev->otherend_id,
+	                                  virt_to_gfn(info->page), 0);
+	if (ret < 0)
+		return ret;
+	info->gref = ret;
+
+	ret = xenbus_alloc_evtchn(dev, &evtchn);
+	if (ret)
+		goto error_grant;
+	ret = bind_evtchn_to_irqhandler(evtchn, input_handler,
+					0, dev->devicetype, info);
+	if (ret < 0) {
+		xenbus_dev_fatal(dev, ret, "bind_evtchn_to_irqhandler");
+		goto error_evtchan;
+	}
+	info->irq = ret;
+
+ again:
+	ret = xenbus_transaction_start(&xbt);
+	if (ret) {
+		xenbus_dev_fatal(dev, ret, "starting transaction");
+		goto error_irqh;
+	}
+	ret = xenbus_printf(xbt, dev->nodename, XENKBD_FIELD_RING_REF, "%lu",
+			    virt_to_gfn(info->page));
+	if (ret)
+		goto error_xenbus;
+	ret = xenbus_printf(xbt, dev->nodename, XENKBD_FIELD_RING_GREF,
+			    "%u", info->gref);
+	if (ret)
+		goto error_xenbus;
+	ret = xenbus_printf(xbt, dev->nodename, XENKBD_FIELD_EVT_CHANNEL, "%u",
+			    evtchn);
+	if (ret)
+		goto error_xenbus;
+	ret = xenbus_transaction_end(xbt, 0);
+	if (ret) {
+		if (ret == -EAGAIN)
+			goto again;
+		xenbus_dev_fatal(dev, ret, "completing transaction");
+		goto error_irqh;
+	}
+
+	xenbus_switch_state(dev, XenbusStateInitialised);
+	return 0;
+
+ error_xenbus:
+	xenbus_transaction_end(xbt, 1);
+	xenbus_dev_fatal(dev, ret, "writing xenstore");
+ error_irqh:
+	unbind_from_irqhandler(info->irq, info);
+	info->irq = -1;
+ error_evtchan:
+	xenbus_free_evtchn(dev, evtchn);
+ error_grant:
+	gnttab_end_foreign_access(info->gref, NULL);
+	info->gref = -1;
+	return ret;
+}
+
+static void xenkbd_disconnect_backend(struct xenkbd_info *info)
+{
+	if (info->irq >= 0)
+		unbind_from_irqhandler(info->irq, info);
+	info->irq = -1;
+	if (info->gref >= 0)
+		gnttab_end_foreign_access(info->gref, NULL);
+	info->gref = -1;
+}
+
+static void xenkbd_backend_changed(struct xenbus_device *dev,
+				   enum xenbus_state backend_state)
+{
+	switch (backend_state) {
+	case XenbusStateInitialising:
+	case XenbusStateInitialised:
+	case XenbusStateReconfiguring:
+	case XenbusStateReconfigured:
+	case XenbusStateUnknown:
+		break;
+
+	case XenbusStateInitWait:
+		xenbus_switch_state(dev, XenbusStateConnected);
+		break;
+
+	case XenbusStateConnected:
+		/*
+		 * Work around xenbus race condition: If backend goes
+		 * through InitWait to Connected fast enough, we can
+		 * get Connected twice here.
+		 */
+		if (dev->state != XenbusStateConnected)
+			xenbus_switch_state(dev, XenbusStateConnected);
+		break;
+
+	case XenbusStateClosed:
+		if (dev->state == XenbusStateClosed)
+			break;
+		fallthrough;	/* Missed the backend's CLOSING state */
+	case XenbusStateClosing:
+		xenbus_frontend_closed(dev);
+		break;
+	}
+}
+
+static const struct xenbus_device_id xenkbd_ids[] = {
+	{ XENKBD_DRIVER_NAME },
+	{ "" }
+};
+
+static struct xenbus_driver xenkbd_driver = {
+	.ids = xenkbd_ids,
+	.probe = xenkbd_probe,
+	.remove = xenkbd_remove,
+	.resume = xenkbd_resume,
+	.otherend_changed = xenkbd_backend_changed,
+	.not_essential = true,
+};
+
+static int __init xenkbd_init(void)
+{
+	if (!xen_domain())
+		return -ENODEV;
+
+	/* Nothing to do if running in dom0. */
+	if (xen_initial_domain())
+		return -ENODEV;
+
+	if (!xen_has_pv_devices())
+		return -ENODEV;
+
+	return xenbus_register_frontend(&xenkbd_driver);
+}
+
+static void __exit xenkbd_cleanup(void)
+{
+	xenbus_unregister_driver(&xenkbd_driver);
+}
+
+module_init(xenkbd_init);
+module_exit(xenkbd_cleanup);
+
+MODULE_DESCRIPTION("Xen virtual keyboard/pointer device frontend");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("xen:" XENKBD_DRIVER_NAME);
diff --git a/drivers/input/misc/yealink.c b/drivers/input/misc/yealink.c
new file mode 100644
index 000000000..69420781d
--- /dev/null
+++ b/drivers/input/misc/yealink.c
@@ -0,0 +1,996 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * drivers/usb/input/yealink.c
+ *
+ * Copyright (c) 2005 Henk Vergonet <Henk.Vergonet@gmail.com>
+ */
+/*
+ * Description:
+ *   Driver for the USB-P1K voip usb phone.
+ *   This device is produced by Yealink Network Technology Co Ltd
+ *   but may be branded under several names:
+ *	- Yealink usb-p1k
+ *	- Tiptel 115
+ *	- ...
+ *
+ * This driver is based on:
+ *   - the usbb2k-api	http://savannah.nongnu.org/projects/usbb2k-api/
+ *   - information from	http://memeteau.free.fr/usbb2k
+ *   - the xpad-driver	drivers/input/joystick/xpad.c
+ *
+ * Thanks to:
+ *   - Olivier Vandorpe, for providing the usbb2k-api.
+ *   - Martin Diehl, for spotting my memory allocation bug.
+ *
+ * History:
+ *   20050527 henk	First version, functional keyboard. Keyboard events
+ *			will pop-up on the ../input/eventX bus.
+ *   20050531 henk	Added led, LCD, dialtone and sysfs interface.
+ *   20050610 henk	Cleanups, make it ready for public consumption.
+ *   20050630 henk	Cleanups, fixes in response to comments.
+ *   20050701 henk	sysfs write serialisation, fix potential unload races
+ *   20050801 henk	Added ringtone, restructure USB
+ *   20050816 henk	Merge 2.6.13-rc6
+ */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/rwsem.h>
+#include <linux/usb/input.h>
+#include <linux/map_to_7segment.h>
+
+#include "yealink.h"
+
+#define DRIVER_VERSION "yld-20051230"
+
+#define YEALINK_POLLING_FREQUENCY	10	/* in [Hz] */
+
+struct yld_status {
+	u8	lcd[24];
+	u8	led;
+	u8	dialtone;
+	u8	ringtone;
+	u8	keynum;
+} __attribute__ ((packed));
+
+/*
+ * Register the LCD segment and icon map
+ */
+#define _LOC(k,l)	{ .a = (k), .m = (l) }
+#define _SEG(t, a, am, b, bm, c, cm, d, dm, e, em, f, fm, g, gm)	\
+	{ .type	= (t),							\
+	  .u = { .s = {	_LOC(a, am), _LOC(b, bm), _LOC(c, cm),		\
+		        _LOC(d, dm), _LOC(e, em), _LOC(g, gm),		\
+			_LOC(f, fm) } } }
+#define _PIC(t, h, hm, n)						\
+	{ .type	= (t),							\
+ 	  .u = { .p = { .name = (n), .a = (h), .m = (hm) } } }
+
+static const struct lcd_segment_map {
+	char	type;
+	union {
+		struct pictogram_map {
+			u8	a,m;
+			char	name[10];
+		}	p;
+		struct segment_map {
+			u8	a,m;
+		} s[7];
+	} u;
+} lcdMap[] = {
+#include "yealink.h"
+};
+
+struct yealink_dev {
+	struct input_dev *idev;		/* input device */
+	struct usb_device *udev;	/* usb device */
+	struct usb_interface *intf;	/* usb interface */
+
+	/* irq input channel */
+	struct yld_ctl_packet	*irq_data;
+	dma_addr_t		irq_dma;
+	struct urb		*urb_irq;
+
+	/* control output channel */
+	struct yld_ctl_packet	*ctl_data;
+	dma_addr_t		ctl_dma;
+	struct usb_ctrlrequest	*ctl_req;
+	struct urb		*urb_ctl;
+
+	char phys[64];			/* physical device path */
+
+	u8 lcdMap[ARRAY_SIZE(lcdMap)];	/* state of LCD, LED ... */
+	int key_code;			/* last reported key	 */
+
+	unsigned int shutdown:1;
+
+	int	stat_ix;
+	union {
+		struct yld_status s;
+		u8		  b[sizeof(struct yld_status)];
+	} master, copy;
+};
+
+
+/*******************************************************************************
+ * Yealink lcd interface
+ ******************************************************************************/
+
+/*
+ * Register a default 7 segment character set
+ */
+static SEG7_DEFAULT_MAP(map_seg7);
+
+ /* Display a char,
+  * char '\9' and '\n' are placeholders and do not overwrite the original text.
+  * A space will always hide an icon.
+  */
+static int setChar(struct yealink_dev *yld, int el, int chr)
+{
+	int i, a, m, val;
+
+	if (el >= ARRAY_SIZE(lcdMap))
+		return -EINVAL;
+
+	if (chr == '\t' || chr == '\n')
+	    return 0;
+
+	yld->lcdMap[el] = chr;
+
+	if (lcdMap[el].type == '.') {
+		a = lcdMap[el].u.p.a;
+		m = lcdMap[el].u.p.m;
+		if (chr != ' ')
+			yld->master.b[a] |= m;
+		else
+			yld->master.b[a] &= ~m;
+		return 0;
+	}
+
+	val = map_to_seg7(&map_seg7, chr);
+	for (i = 0; i < ARRAY_SIZE(lcdMap[0].u.s); i++) {
+		m = lcdMap[el].u.s[i].m;
+
+		if (m == 0)
+			continue;
+
+		a = lcdMap[el].u.s[i].a;
+		if (val & 1)
+			yld->master.b[a] |= m;
+		else
+			yld->master.b[a] &= ~m;
+		val = val >> 1;
+	}
+	return 0;
+};
+
+/*******************************************************************************
+ * Yealink key interface
+ ******************************************************************************/
+
+/* Map device buttons to internal key events.
+ *
+ * USB-P1K button layout:
+ *
+ *             up
+ *       IN           OUT
+ *            down
+ *
+ *     pickup   C    hangup
+ *       1      2      3
+ *       4      5      6
+ *       7      8      9
+ *       *      0      #
+ *
+ * The "up" and "down" keys, are symbolised by arrows on the button.
+ * The "pickup" and "hangup" keys are symbolised by a green and red phone
+ * on the button.
+ */
+static int map_p1k_to_key(int scancode)
+{
+	switch(scancode) {		/* phone key:	*/
+	case 0x23: return KEY_LEFT;	/*   IN		*/
+	case 0x33: return KEY_UP;	/*   up		*/
+	case 0x04: return KEY_RIGHT;	/*   OUT	*/
+	case 0x24: return KEY_DOWN;	/*   down	*/
+	case 0x03: return KEY_ENTER;	/*   pickup	*/
+	case 0x14: return KEY_BACKSPACE; /*  C		*/
+	case 0x13: return KEY_ESC;	/*   hangup	*/
+	case 0x00: return KEY_1;	/*   1		*/
+	case 0x01: return KEY_2;	/*   2 		*/
+	case 0x02: return KEY_3;	/*   3		*/
+	case 0x10: return KEY_4;	/*   4		*/
+	case 0x11: return KEY_5;	/*   5		*/
+	case 0x12: return KEY_6;	/*   6		*/
+	case 0x20: return KEY_7;	/*   7		*/
+	case 0x21: return KEY_8;	/*   8		*/
+	case 0x22: return KEY_9;	/*   9		*/
+	case 0x30: return KEY_KPASTERISK; /* *		*/
+	case 0x31: return KEY_0;	/*   0		*/
+	case 0x32: return KEY_LEFTSHIFT |
+			  KEY_3 << 8;	/*   #		*/
+	}
+	return -EINVAL;
+}
+
+/* Completes a request by converting the data into events for the
+ * input subsystem.
+ *
+ * The key parameter can be cascaded: key2 << 8 | key1
+ */
+static void report_key(struct yealink_dev *yld, int key)
+{
+	struct input_dev *idev = yld->idev;
+
+	if (yld->key_code >= 0) {
+		/* old key up */
+		input_report_key(idev, yld->key_code & 0xff, 0);
+		if (yld->key_code >> 8)
+			input_report_key(idev, yld->key_code >> 8, 0);
+	}
+
+	yld->key_code = key;
+	if (key >= 0) {
+		/* new valid key */
+		input_report_key(idev, key & 0xff, 1);
+		if (key >> 8)
+			input_report_key(idev, key >> 8, 1);
+	}
+	input_sync(idev);
+}
+
+/*******************************************************************************
+ * Yealink usb communication interface
+ ******************************************************************************/
+
+static int yealink_cmd(struct yealink_dev *yld, struct yld_ctl_packet *p)
+{
+	u8	*buf = (u8 *)p;
+	int	i;
+	u8	sum = 0;
+
+	for(i=0; i<USB_PKT_LEN-1; i++)
+		sum -= buf[i];
+	p->sum = sum;
+	return usb_control_msg(yld->udev,
+			usb_sndctrlpipe(yld->udev, 0),
+			USB_REQ_SET_CONFIGURATION,
+			USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_OUT,
+			0x200, 3,
+			p, sizeof(*p),
+			USB_CTRL_SET_TIMEOUT);
+}
+
+static u8 default_ringtone[] = {
+	0xEF,			/* volume [0-255] */
+	0xFB, 0x1E, 0x00, 0x0C,	/* 1250 [hz], 12/100 [s] */
+	0xFC, 0x18, 0x00, 0x0C,	/* 1000 [hz], 12/100 [s] */
+	0xFB, 0x1E, 0x00, 0x0C,
+	0xFC, 0x18, 0x00, 0x0C,
+	0xFB, 0x1E, 0x00, 0x0C,
+	0xFC, 0x18, 0x00, 0x0C,
+	0xFB, 0x1E, 0x00, 0x0C,
+	0xFC, 0x18, 0x00, 0x0C,
+	0xFF, 0xFF, 0x01, 0x90,	/* silent, 400/100 [s] */
+	0x00, 0x00		/* end of sequence */
+};
+
+static int yealink_set_ringtone(struct yealink_dev *yld, u8 *buf, size_t size)
+{
+	struct yld_ctl_packet *p = yld->ctl_data;
+	int	ix, len;
+
+	if (size <= 0)
+		return -EINVAL;
+
+	/* Set the ringtone volume */
+	memset(yld->ctl_data, 0, sizeof(*(yld->ctl_data)));
+	yld->ctl_data->cmd	= CMD_RING_VOLUME;
+	yld->ctl_data->size	= 1;
+	yld->ctl_data->data[0]	= buf[0];
+	yealink_cmd(yld, p);
+
+	buf++;
+	size--;
+
+	p->cmd = CMD_RING_NOTE;
+	ix = 0;
+	while (size != ix) {
+		len = size - ix;
+		if (len > sizeof(p->data))
+			len = sizeof(p->data);
+		p->size	  = len;
+		p->offset = cpu_to_be16(ix);
+		memcpy(p->data, &buf[ix], len);
+		yealink_cmd(yld, p);
+		ix += len;
+	}
+	return 0;
+}
+
+/* keep stat_master & stat_copy in sync.
+ */
+static int yealink_do_idle_tasks(struct yealink_dev *yld)
+{
+	u8 val;
+	int i, ix, len;
+
+	ix = yld->stat_ix;
+
+	memset(yld->ctl_data, 0, sizeof(*(yld->ctl_data)));
+	yld->ctl_data->cmd  = CMD_KEYPRESS;
+	yld->ctl_data->size = 1;
+	yld->ctl_data->sum  = 0xff - CMD_KEYPRESS;
+
+	/* If state update pointer wraps do a KEYPRESS first. */
+	if (ix >= sizeof(yld->master)) {
+		yld->stat_ix = 0;
+		return 0;
+	}
+
+	/* find update candidates: copy != master */
+	do {
+		val = yld->master.b[ix];
+		if (val != yld->copy.b[ix])
+			goto send_update;
+	} while (++ix < sizeof(yld->master));
+
+	/* nothing todo, wait a bit and poll for a KEYPRESS */
+	yld->stat_ix = 0;
+	/* TODO how can we wait abit. ??
+	 * msleep_interruptible(1000 / YEALINK_POLLING_FREQUENCY);
+	 */
+	return 0;
+
+send_update:
+
+	/* Setup an appropriate update request */
+	yld->copy.b[ix] = val;
+	yld->ctl_data->data[0] = val;
+
+	switch(ix) {
+	case offsetof(struct yld_status, led):
+		yld->ctl_data->cmd	= CMD_LED;
+		yld->ctl_data->sum	= -1 - CMD_LED - val;
+		break;
+	case offsetof(struct yld_status, dialtone):
+		yld->ctl_data->cmd	= CMD_DIALTONE;
+		yld->ctl_data->sum	= -1 - CMD_DIALTONE - val;
+		break;
+	case offsetof(struct yld_status, ringtone):
+		yld->ctl_data->cmd	= CMD_RINGTONE;
+		yld->ctl_data->sum	= -1 - CMD_RINGTONE - val;
+		break;
+	case offsetof(struct yld_status, keynum):
+		val--;
+		val &= 0x1f;
+		yld->ctl_data->cmd	= CMD_SCANCODE;
+		yld->ctl_data->offset	= cpu_to_be16(val);
+		yld->ctl_data->data[0]	= 0;
+		yld->ctl_data->sum	= -1 - CMD_SCANCODE - val;
+		break;
+	default:
+		len = sizeof(yld->master.s.lcd) - ix;
+		if (len > sizeof(yld->ctl_data->data))
+			len = sizeof(yld->ctl_data->data);
+
+		/* Combine up to <len> consecutive LCD bytes in a singe request
+		 */
+		yld->ctl_data->cmd	= CMD_LCD;
+		yld->ctl_data->offset	= cpu_to_be16(ix);
+		yld->ctl_data->size	= len;
+		yld->ctl_data->sum	= -CMD_LCD - ix - val - len;
+		for(i=1; i<len; i++) {
+			ix++;
+			val = yld->master.b[ix];
+			yld->copy.b[ix]		= val;
+			yld->ctl_data->data[i]	= val;
+			yld->ctl_data->sum     -= val;
+		}
+	}
+	yld->stat_ix = ix + 1;
+	return 1;
+}
+
+/* Decide on how to handle responses
+ *
+ * The state transition diagram is somethhing like:
+ *
+ *          syncState<--+
+ *               |      |
+ *               |    idle
+ *              \|/     |
+ * init --ok--> waitForKey --ok--> getKey
+ *  ^               ^                |
+ *  |               +-------ok-------+
+ * error,start
+ *
+ */
+static void urb_irq_callback(struct urb *urb)
+{
+	struct yealink_dev *yld = urb->context;
+	int ret, status = urb->status;
+
+	if (status)
+		dev_err(&yld->intf->dev, "%s - urb status %d\n",
+			__func__, status);
+
+	switch (yld->irq_data->cmd) {
+	case CMD_KEYPRESS:
+
+		yld->master.s.keynum = yld->irq_data->data[0];
+		break;
+
+	case CMD_SCANCODE:
+		dev_dbg(&yld->intf->dev, "get scancode %x\n",
+			yld->irq_data->data[0]);
+
+		report_key(yld, map_p1k_to_key(yld->irq_data->data[0]));
+		break;
+
+	default:
+		dev_err(&yld->intf->dev, "unexpected response %x\n",
+			yld->irq_data->cmd);
+	}
+
+	yealink_do_idle_tasks(yld);
+
+	if (!yld->shutdown) {
+		ret = usb_submit_urb(yld->urb_ctl, GFP_ATOMIC);
+		if (ret && ret != -EPERM)
+			dev_err(&yld->intf->dev,
+				"%s - usb_submit_urb failed %d\n",
+				__func__, ret);
+	}
+}
+
+static void urb_ctl_callback(struct urb *urb)
+{
+	struct yealink_dev *yld = urb->context;
+	int ret = 0, status = urb->status;
+
+	if (status)
+		dev_err(&yld->intf->dev, "%s - urb status %d\n",
+			__func__, status);
+
+	switch (yld->ctl_data->cmd) {
+	case CMD_KEYPRESS:
+	case CMD_SCANCODE:
+		/* ask for a response */
+		if (!yld->shutdown)
+			ret = usb_submit_urb(yld->urb_irq, GFP_ATOMIC);
+		break;
+	default:
+		/* send new command */
+		yealink_do_idle_tasks(yld);
+		if (!yld->shutdown)
+			ret = usb_submit_urb(yld->urb_ctl, GFP_ATOMIC);
+		break;
+	}
+
+	if (ret && ret != -EPERM)
+		dev_err(&yld->intf->dev, "%s - usb_submit_urb failed %d\n",
+			__func__, ret);
+}
+
+/*******************************************************************************
+ * input event interface
+ ******************************************************************************/
+
+/* TODO should we issue a ringtone on a SND_BELL event?
+static int input_ev(struct input_dev *dev, unsigned int type,
+		unsigned int code, int value)
+{
+
+	if (type != EV_SND)
+		return -EINVAL;
+
+	switch (code) {
+	case SND_BELL:
+	case SND_TONE:
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+*/
+
+static int input_open(struct input_dev *dev)
+{
+	struct yealink_dev *yld = input_get_drvdata(dev);
+	int i, ret;
+
+	dev_dbg(&yld->intf->dev, "%s\n", __func__);
+
+	/* force updates to device */
+	for (i = 0; i<sizeof(yld->master); i++)
+		yld->copy.b[i] = ~yld->master.b[i];
+	yld->key_code = -1;	/* no keys pressed */
+
+        yealink_set_ringtone(yld, default_ringtone, sizeof(default_ringtone));
+
+	/* issue INIT */
+	memset(yld->ctl_data, 0, sizeof(*(yld->ctl_data)));
+	yld->ctl_data->cmd	= CMD_INIT;
+	yld->ctl_data->size	= 10;
+	yld->ctl_data->sum	= 0x100-CMD_INIT-10;
+	if ((ret = usb_submit_urb(yld->urb_ctl, GFP_KERNEL)) != 0) {
+		dev_dbg(&yld->intf->dev,
+			"%s - usb_submit_urb failed with result %d\n",
+			__func__, ret);
+		return ret;
+	}
+	return 0;
+}
+
+static void input_close(struct input_dev *dev)
+{
+	struct yealink_dev *yld = input_get_drvdata(dev);
+
+	yld->shutdown = 1;
+	/*
+	 * Make sure the flag is seen by other CPUs before we start
+	 * killing URBs so new URBs won't be submitted
+	 */
+	smp_wmb();
+
+	usb_kill_urb(yld->urb_ctl);
+	usb_kill_urb(yld->urb_irq);
+
+	yld->shutdown = 0;
+	smp_wmb();
+}
+
+/*******************************************************************************
+ * sysfs interface
+ ******************************************************************************/
+
+static DECLARE_RWSEM(sysfs_rwsema);
+
+/* Interface to the 7-segments translation table aka. char set.
+ */
+static ssize_t show_map(struct device *dev, struct device_attribute *attr,
+				char *buf)
+{
+	memcpy(buf, &map_seg7, sizeof(map_seg7));
+	return sizeof(map_seg7);
+}
+
+static ssize_t store_map(struct device *dev, struct device_attribute *attr,
+				const char *buf, size_t cnt)
+{
+	if (cnt != sizeof(map_seg7))
+		return -EINVAL;
+	memcpy(&map_seg7, buf, sizeof(map_seg7));
+	return sizeof(map_seg7);
+}
+
+/* Interface to the LCD.
+ */
+
+/* Reading /sys/../lineX will return the format string with its settings:
+ *
+ * Example:
+ * cat ./line3
+ * 888888888888
+ * Linux Rocks!
+ */
+static ssize_t show_line(struct device *dev, char *buf, int a, int b)
+{
+	struct yealink_dev *yld;
+	int i;
+
+	down_read(&sysfs_rwsema);
+	yld = dev_get_drvdata(dev);
+	if (yld == NULL) {
+		up_read(&sysfs_rwsema);
+		return -ENODEV;
+	}
+
+	for (i = a; i < b; i++)
+		*buf++ = lcdMap[i].type;
+	*buf++ = '\n';
+	for (i = a; i < b; i++)
+		*buf++ = yld->lcdMap[i];
+	*buf++ = '\n';
+	*buf = 0;
+
+	up_read(&sysfs_rwsema);
+	return 3 + ((b - a) << 1);
+}
+
+static ssize_t show_line1(struct device *dev, struct device_attribute *attr,
+			char *buf)
+{
+	return show_line(dev, buf, LCD_LINE1_OFFSET, LCD_LINE2_OFFSET);
+}
+
+static ssize_t show_line2(struct device *dev, struct device_attribute *attr,
+			char *buf)
+{
+	return show_line(dev, buf, LCD_LINE2_OFFSET, LCD_LINE3_OFFSET);
+}
+
+static ssize_t show_line3(struct device *dev, struct device_attribute *attr,
+			char *buf)
+{
+	return show_line(dev, buf, LCD_LINE3_OFFSET, LCD_LINE4_OFFSET);
+}
+
+/* Writing to /sys/../lineX will set the coresponding LCD line.
+ * - Excess characters are ignored.
+ * - If less characters are written than allowed, the remaining digits are
+ *   unchanged.
+ * - The '\n' or '\t' char is a placeholder, it does not overwrite the
+ *   original content.
+ */
+static ssize_t store_line(struct device *dev, const char *buf, size_t count,
+		int el, size_t len)
+{
+	struct yealink_dev *yld;
+	int i;
+
+	down_write(&sysfs_rwsema);
+	yld = dev_get_drvdata(dev);
+	if (yld == NULL) {
+		up_write(&sysfs_rwsema);
+		return -ENODEV;
+	}
+
+	if (len > count)
+		len = count;
+	for (i = 0; i < len; i++)
+		setChar(yld, el++, buf[i]);
+
+	up_write(&sysfs_rwsema);
+	return count;
+}
+
+static ssize_t store_line1(struct device *dev, struct device_attribute *attr,
+				const char *buf, size_t count)
+{
+	return store_line(dev, buf, count, LCD_LINE1_OFFSET, LCD_LINE1_SIZE);
+}
+
+static ssize_t store_line2(struct device *dev, struct device_attribute *attr,
+				const char *buf, size_t count)
+{
+	return store_line(dev, buf, count, LCD_LINE2_OFFSET, LCD_LINE2_SIZE);
+}
+
+static ssize_t store_line3(struct device *dev, struct device_attribute *attr,
+				const char *buf, size_t count)
+{
+	return store_line(dev, buf, count, LCD_LINE3_OFFSET, LCD_LINE3_SIZE);
+}
+
+/* Interface to visible and audible "icons", these include:
+ * pictures on the LCD, the LED, and the dialtone signal.
+ */
+
+/* Get a list of "switchable elements" with their current state. */
+static ssize_t get_icons(struct device *dev, struct device_attribute *attr,
+			char *buf)
+{
+	struct yealink_dev *yld;
+	int i, ret = 1;
+
+	down_read(&sysfs_rwsema);
+	yld = dev_get_drvdata(dev);
+	if (yld == NULL) {
+		up_read(&sysfs_rwsema);
+		return -ENODEV;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(lcdMap); i++) {
+		if (lcdMap[i].type != '.')
+			continue;
+		ret += sprintf(&buf[ret], "%s %s\n",
+				yld->lcdMap[i] == ' ' ? "  " : "on",
+				lcdMap[i].u.p.name);
+	}
+	up_read(&sysfs_rwsema);
+	return ret;
+}
+
+/* Change the visibility of a particular element. */
+static ssize_t set_icon(struct device *dev, const char *buf, size_t count,
+			int chr)
+{
+	struct yealink_dev *yld;
+	int i;
+
+	down_write(&sysfs_rwsema);
+	yld = dev_get_drvdata(dev);
+	if (yld == NULL) {
+		up_write(&sysfs_rwsema);
+		return -ENODEV;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(lcdMap); i++) {
+		if (lcdMap[i].type != '.')
+			continue;
+		if (strncmp(buf, lcdMap[i].u.p.name, count) == 0) {
+			setChar(yld, i, chr);
+			break;
+		}
+	}
+
+	up_write(&sysfs_rwsema);
+	return count;
+}
+
+static ssize_t show_icon(struct device *dev, struct device_attribute *attr,
+		const char *buf, size_t count)
+{
+	return set_icon(dev, buf, count, buf[0]);
+}
+
+static ssize_t hide_icon(struct device *dev, struct device_attribute *attr,
+		const char *buf, size_t count)
+{
+	return set_icon(dev, buf, count, ' ');
+}
+
+/* Upload a ringtone to the device.
+ */
+
+/* Stores raw ringtone data in the phone */
+static ssize_t store_ringtone(struct device *dev,
+		struct device_attribute *attr,
+		const char *buf, size_t count)
+{
+	struct yealink_dev *yld;
+
+	down_write(&sysfs_rwsema);
+	yld = dev_get_drvdata(dev);
+	if (yld == NULL) {
+		up_write(&sysfs_rwsema);
+		return -ENODEV;
+	}
+
+	/* TODO locking with async usb control interface??? */
+	yealink_set_ringtone(yld, (char *)buf, count);
+	up_write(&sysfs_rwsema);
+	return count;
+}
+
+#define _M444	S_IRUGO
+#define _M664	S_IRUGO|S_IWUSR|S_IWGRP
+#define _M220	S_IWUSR|S_IWGRP
+
+static DEVICE_ATTR(map_seg7	, _M664, show_map	, store_map	);
+static DEVICE_ATTR(line1	, _M664, show_line1	, store_line1	);
+static DEVICE_ATTR(line2	, _M664, show_line2	, store_line2	);
+static DEVICE_ATTR(line3	, _M664, show_line3	, store_line3	);
+static DEVICE_ATTR(get_icons	, _M444, get_icons	, NULL		);
+static DEVICE_ATTR(show_icon	, _M220, NULL		, show_icon	);
+static DEVICE_ATTR(hide_icon	, _M220, NULL		, hide_icon	);
+static DEVICE_ATTR(ringtone	, _M220, NULL		, store_ringtone);
+
+static struct attribute *yld_attributes[] = {
+	&dev_attr_line1.attr,
+	&dev_attr_line2.attr,
+	&dev_attr_line3.attr,
+	&dev_attr_get_icons.attr,
+	&dev_attr_show_icon.attr,
+	&dev_attr_hide_icon.attr,
+	&dev_attr_map_seg7.attr,
+	&dev_attr_ringtone.attr,
+	NULL
+};
+
+static const struct attribute_group yld_attr_group = {
+	.attrs = yld_attributes
+};
+
+/*******************************************************************************
+ * Linux interface and usb initialisation
+ ******************************************************************************/
+
+struct driver_info {
+	char *name;
+};
+
+static const struct driver_info info_P1K = {
+	.name	= "Yealink usb-p1k",
+};
+
+static const struct usb_device_id usb_table [] = {
+	{
+		.match_flags		= USB_DEVICE_ID_MATCH_DEVICE |
+						USB_DEVICE_ID_MATCH_INT_INFO,
+		.idVendor		= 0x6993,
+		.idProduct		= 0xb001,
+		.bInterfaceClass	= USB_CLASS_HID,
+		.bInterfaceSubClass	= 0,
+		.bInterfaceProtocol	= 0,
+		.driver_info		= (kernel_ulong_t)&info_P1K
+	},
+	{ }
+};
+
+static int usb_cleanup(struct yealink_dev *yld, int err)
+{
+	if (yld == NULL)
+		return err;
+
+        if (yld->idev) {
+		if (err)
+			input_free_device(yld->idev);
+		else
+			input_unregister_device(yld->idev);
+	}
+
+	usb_free_urb(yld->urb_irq);
+	usb_free_urb(yld->urb_ctl);
+
+	kfree(yld->ctl_req);
+	usb_free_coherent(yld->udev, USB_PKT_LEN, yld->ctl_data, yld->ctl_dma);
+	usb_free_coherent(yld->udev, USB_PKT_LEN, yld->irq_data, yld->irq_dma);
+
+	kfree(yld);
+	return err;
+}
+
+static void usb_disconnect(struct usb_interface *intf)
+{
+	struct yealink_dev *yld;
+
+	down_write(&sysfs_rwsema);
+	yld = usb_get_intfdata(intf);
+	sysfs_remove_group(&intf->dev.kobj, &yld_attr_group);
+	usb_set_intfdata(intf, NULL);
+	up_write(&sysfs_rwsema);
+
+	usb_cleanup(yld, 0);
+}
+
+static int usb_probe(struct usb_interface *intf, const struct usb_device_id *id)
+{
+	struct usb_device *udev = interface_to_usbdev (intf);
+	struct driver_info *nfo = (struct driver_info *)id->driver_info;
+	struct usb_host_interface *interface;
+	struct usb_endpoint_descriptor *endpoint;
+	struct yealink_dev *yld;
+	struct input_dev *input_dev;
+	int ret, pipe, i;
+
+	interface = intf->cur_altsetting;
+
+	if (interface->desc.bNumEndpoints < 1)
+		return -ENODEV;
+
+	endpoint = &interface->endpoint[0].desc;
+	if (!usb_endpoint_is_int_in(endpoint))
+		return -ENODEV;
+
+	yld = kzalloc(sizeof(struct yealink_dev), GFP_KERNEL);
+	if (!yld)
+		return -ENOMEM;
+
+	yld->udev = udev;
+	yld->intf = intf;
+
+	yld->idev = input_dev = input_allocate_device();
+	if (!input_dev)
+		return usb_cleanup(yld, -ENOMEM);
+
+	/* allocate usb buffers */
+	yld->irq_data = usb_alloc_coherent(udev, USB_PKT_LEN,
+					   GFP_KERNEL, &yld->irq_dma);
+	if (yld->irq_data == NULL)
+		return usb_cleanup(yld, -ENOMEM);
+
+	yld->ctl_data = usb_alloc_coherent(udev, USB_PKT_LEN,
+					   GFP_KERNEL, &yld->ctl_dma);
+	if (!yld->ctl_data)
+		return usb_cleanup(yld, -ENOMEM);
+
+	yld->ctl_req = kmalloc(sizeof(*(yld->ctl_req)), GFP_KERNEL);
+	if (yld->ctl_req == NULL)
+		return usb_cleanup(yld, -ENOMEM);
+
+	/* allocate urb structures */
+	yld->urb_irq = usb_alloc_urb(0, GFP_KERNEL);
+        if (yld->urb_irq == NULL)
+		return usb_cleanup(yld, -ENOMEM);
+
+	yld->urb_ctl = usb_alloc_urb(0, GFP_KERNEL);
+        if (yld->urb_ctl == NULL)
+		return usb_cleanup(yld, -ENOMEM);
+
+	/* get a handle to the interrupt data pipe */
+	pipe = usb_rcvintpipe(udev, endpoint->bEndpointAddress);
+	ret = usb_maxpacket(udev, pipe);
+	if (ret != USB_PKT_LEN)
+		dev_err(&intf->dev, "invalid payload size %d, expected %zd\n",
+			ret, USB_PKT_LEN);
+
+	/* initialise irq urb */
+	usb_fill_int_urb(yld->urb_irq, udev, pipe, yld->irq_data,
+			USB_PKT_LEN,
+			urb_irq_callback,
+			yld, endpoint->bInterval);
+	yld->urb_irq->transfer_dma = yld->irq_dma;
+	yld->urb_irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+	yld->urb_irq->dev = udev;
+
+	/* initialise ctl urb */
+	yld->ctl_req->bRequestType = USB_TYPE_CLASS | USB_RECIP_INTERFACE |
+				      USB_DIR_OUT;
+	yld->ctl_req->bRequest	= USB_REQ_SET_CONFIGURATION;
+	yld->ctl_req->wValue	= cpu_to_le16(0x200);
+	yld->ctl_req->wIndex	= cpu_to_le16(interface->desc.bInterfaceNumber);
+	yld->ctl_req->wLength	= cpu_to_le16(USB_PKT_LEN);
+
+	usb_fill_control_urb(yld->urb_ctl, udev, usb_sndctrlpipe(udev, 0),
+			(void *)yld->ctl_req, yld->ctl_data, USB_PKT_LEN,
+			urb_ctl_callback, yld);
+	yld->urb_ctl->transfer_dma	= yld->ctl_dma;
+	yld->urb_ctl->transfer_flags	|= URB_NO_TRANSFER_DMA_MAP;
+	yld->urb_ctl->dev = udev;
+
+	/* find out the physical bus location */
+	usb_make_path(udev, yld->phys, sizeof(yld->phys));
+	strlcat(yld->phys,  "/input0", sizeof(yld->phys));
+
+	/* register settings for the input device */
+	input_dev->name = nfo->name;
+	input_dev->phys = yld->phys;
+	usb_to_input_id(udev, &input_dev->id);
+	input_dev->dev.parent = &intf->dev;
+
+	input_set_drvdata(input_dev, yld);
+
+	input_dev->open = input_open;
+	input_dev->close = input_close;
+	/* input_dev->event = input_ev;	TODO */
+
+	/* register available key events */
+	input_dev->evbit[0] = BIT_MASK(EV_KEY);
+	for (i = 0; i < 256; i++) {
+		int k = map_p1k_to_key(i);
+		if (k >= 0) {
+			set_bit(k & 0xff, input_dev->keybit);
+			if (k >> 8)
+				set_bit(k >> 8, input_dev->keybit);
+		}
+	}
+
+	ret = input_register_device(yld->idev);
+	if (ret)
+		return usb_cleanup(yld, ret);
+
+	usb_set_intfdata(intf, yld);
+
+	/* clear visible elements */
+	for (i = 0; i < ARRAY_SIZE(lcdMap); i++)
+		setChar(yld, i, ' ');
+
+	/* display driver version on LCD line 3 */
+	store_line3(&intf->dev, NULL,
+			DRIVER_VERSION, sizeof(DRIVER_VERSION));
+
+	/* Register sysfs hooks (don't care about failure) */
+	ret = sysfs_create_group(&intf->dev.kobj, &yld_attr_group);
+	return 0;
+}
+
+static struct usb_driver yealink_driver = {
+	.name		= "yealink",
+	.probe		= usb_probe,
+	.disconnect	= usb_disconnect,
+	.id_table	= usb_table,
+};
+
+module_usb_driver(yealink_driver);
+
+MODULE_DEVICE_TABLE (usb, usb_table);
+
+MODULE_AUTHOR("Henk Vergonet");
+MODULE_DESCRIPTION("Yealink phone driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/misc/yealink.h b/drivers/input/misc/yealink.h
new file mode 100644
index 000000000..69f700431
--- /dev/null
+++ b/drivers/input/misc/yealink.h
@@ -0,0 +1,206 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * drivers/usb/input/yealink.h
+ *
+ * Copyright (c) 2005 Henk Vergonet <Henk.Vergonet@gmail.com>
+ */
+#ifndef INPUT_YEALINK_H
+#define INPUT_YEALINK_H
+
+/* Using the control channel on interface 3 various aspects of the phone
+ * can be controlled like LCD, LED, dialtone and the ringtone.
+ */
+
+struct yld_ctl_packet {
+	u8	cmd;		/* command code, see below */
+	u8	size;		/* 1-11, size of used data bytes. */
+	__be16	offset;		/* internal packet offset */
+	u8	data[11];
+	s8	sum;		/* negative sum of 15 preceding bytes */
+} __attribute__ ((packed));
+
+#define USB_PKT_LEN	sizeof(struct yld_ctl_packet)
+
+/* The following yld_ctl_packet's are available: */
+
+/* Init registers
+ *
+ * cmd		0x8e
+ * size		10
+ * offset	0
+ * data		0,0,0,0....
+ */
+#define CMD_INIT		0x8e
+
+/* Request key scan
+ *
+ * cmd		0x80
+ * size		1
+ * offset	0
+ * data[0]	on return returns the key number, if it changes there's a new
+ * 		key pressed.
+ */
+#define CMD_KEYPRESS		0x80
+
+/* Request scancode
+ *
+ * cmd		0x81
+ * size		1
+ * offset	key number [0-1f]
+ * data[0]	on return returns the scancode
+ */
+#define CMD_SCANCODE		0x81
+
+/* Set LCD
+ *
+ * cmd		0x04
+ * size		1-11
+ * offset	0-23
+ * data		segment bits
+ */
+#define CMD_LCD			0x04
+
+/* Set led
+ *
+ * cmd		0x05
+ * size		1
+ * offset	0
+ * data[0]	0 OFF / 1 ON
+ */
+#define CMD_LED			0x05
+
+/* Set ringtone volume
+ *
+ * cmd		0x11
+ * size		1
+ * offset	0
+ * data[0]	0-0xff  volume
+ */
+#define CMD_RING_VOLUME		0x11
+
+/* Set ringtone notes
+ *
+ * cmd		0x02
+ * size		1-11
+ * offset	0->
+ * data		binary representation LE16(-freq), LE16(duration) ....
+ */
+#define CMD_RING_NOTE		0x02
+
+/* Sound ringtone via the speaker on the back
+ *
+ * cmd		0x03
+ * size		1
+ * offset	0
+ * data[0]	0 OFF / 0x24 ON
+ */
+#define CMD_RINGTONE		0x03
+
+/* Sound dial tone via the ear speaker
+ *
+ * cmd		0x09
+ * size		1
+ * offset	0
+ * data[0]	0 OFF / 1 ON
+ */
+#define CMD_DIALTONE		0x09
+
+#endif /* INPUT_YEALINK_H */
+
+
+#if defined(_SEG) && defined(_PIC)
+/* This table maps the LCD segments onto individual bit positions in the
+ * yld_status struct.
+ */
+
+/* LCD, each segment must be driven separately.
+ *
+ * Layout:
+ *
+ *   |[]   [][]   [][]   [][]   in   |[][]
+ *   |[] M [][] D [][] : [][]   out  |[][]
+ *                             store
+ *
+ *    NEW REP         SU MO TU WE TH FR SA
+ *
+ *    [] [] [] [] [] [] [] [] [] [] [] []
+ *    [] [] [] [] [] [] [] [] [] [] [] []
+ */
+
+/* Line 1
+ *	Format		: 18.e8.M8.88...188
+ *	Icon names	: M D : IN OUT STORE
+ */
+#define LCD_LINE1_OFFSET	0
+#define LCD_LINE1_SIZE		17
+
+/* Note: first g then f =>			       !      !      */
+/* _SEG(    type    a      b      c      d      e      g      f   )  */
+	_SEG('1',  0,0 , 22,2 , 22,2 ,  0,0 ,  0,0 ,  0,0 ,  0,0	),
+	_SEG('8', 20,1 , 20,2 , 20,4 , 20,8 , 21,4 , 21,2 , 21,1	),
+	_PIC('.', 22,1 , "M"						),
+	_SEG('e', 18,1 , 18,2 , 18,4 , 18,1 , 19,2 , 18,1 , 19,1	),
+	_SEG('8', 16,1 , 16,2 , 16,4 , 16,8 , 17,4 , 17,2 , 17,1	),
+	_PIC('.', 15,8 , "D"						),
+	_SEG('M', 14,1 , 14,2 , 14,4 , 14,1 , 15,4 , 15,2 , 15,1	),
+	_SEG('8', 12,1 , 12,2 , 12,4 , 12,8 , 13,4 , 13,2 , 13,1	),
+	_PIC('.', 11,8 , ":"						),
+	_SEG('8', 10,1 , 10,2 , 10,4 , 10,8 , 11,4 , 11,2 , 11,1	),
+	_SEG('8',  8,1 ,  8,2 ,  8,4 ,  8,8 ,  9,4 ,  9,2 ,  9,1	),
+	_PIC('.',  7,1 , "IN"						),
+	_PIC('.',  7,2 , "OUT"						),
+	_PIC('.',  7,4 , "STORE"					),
+	_SEG('1',  0,0 ,  5,1 ,  5,1 ,  0,0 ,  0,0 ,  0,0 ,  0,0	),
+	_SEG('8',  4,1 ,  4,2 ,  4,4 ,  4,8 ,  5,8 ,  5,4 ,  5,2	),
+	_SEG('8',  2,1 ,  2,2 ,  2,4 ,  2,8 ,  3,4 ,  3,2 ,  3,1	),
+
+/* Line 2
+ *	Format		: .........
+ *	Pict. name	: NEW REP SU MO TU WE TH FR SA
+ */
+#define LCD_LINE2_OFFSET	LCD_LINE1_OFFSET + LCD_LINE1_SIZE
+#define LCD_LINE2_SIZE		9
+
+	_PIC('.', 23,2 , "NEW"	),
+	_PIC('.', 23,4 , "REP"	),
+	_PIC('.',  1,8 , "SU"	),
+	_PIC('.',  1,4 , "MO"	),
+	_PIC('.',  1,2 , "TU"	),
+	_PIC('.',  1,1 , "WE"	),
+	_PIC('.',  0,1 , "TH"	),
+	_PIC('.',  0,2 , "FR"	),
+	_PIC('.',  0,4 , "SA"	),
+
+/* Line 3
+ *	Format		: 888888888888
+ */
+#define LCD_LINE3_OFFSET	LCD_LINE2_OFFSET + LCD_LINE2_SIZE
+#define LCD_LINE3_SIZE		12
+
+	_SEG('8', 22,16, 22,32, 22,64, 22,128, 23,128, 23,64, 23,32  ),
+	_SEG('8', 20,16, 20,32, 20,64, 20,128, 21,128, 21,64, 21,32  ),
+	_SEG('8', 18,16, 18,32, 18,64, 18,128, 19,128, 19,64, 19,32  ),
+	_SEG('8', 16,16, 16,32, 16,64, 16,128, 17,128, 17,64, 17,32  ),
+	_SEG('8', 14,16, 14,32, 14,64, 14,128, 15,128, 15,64, 15,32  ),
+	_SEG('8', 12,16, 12,32, 12,64, 12,128, 13,128, 13,64, 13,32  ),
+	_SEG('8', 10,16, 10,32, 10,64, 10,128, 11,128, 11,64, 11,32  ),
+	_SEG('8',  8,16,  8,32,  8,64,  8,128,  9,128,  9,64,  9,32  ),
+	_SEG('8',  6,16,  6,32,  6,64,  6,128,  7,128,  7,64,  7,32  ),
+	_SEG('8',  4,16,  4,32,  4,64,  4,128,  5,128,  5,64,  5,32  ),
+	_SEG('8',  2,16,  2,32,  2,64,  2,128,  3,128,  3,64,  3,32  ),
+	_SEG('8',  0,16,  0,32,  0,64,  0,128,  1,128,  1,64,  1,32  ),
+
+/* Line 4
+ *
+ * The LED, DIALTONE and RINGTONE are implemented as icons and use the same
+ * sysfs interface.
+ */
+#define LCD_LINE4_OFFSET	LCD_LINE3_OFFSET + LCD_LINE3_SIZE
+
+	_PIC('.', offsetof(struct yld_status, led)	, 0x01, "LED" ),
+	_PIC('.', offsetof(struct yld_status, dialtone) , 0x01, "DIALTONE" ),
+	_PIC('.', offsetof(struct yld_status, ringtone) , 0x24, "RINGTONE" ),
+
+#undef _SEG
+#undef _PIC
+#endif /* _SEG && _PIC */