Adding upstream version 4.19.249.upstream/4.19.249

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

1 files changed, 257 insertions, 0 deletions

diff --git a/drivers/mfd/da9063-core.c b/drivers/mfd/da9063-core.c
new file mode 100644
index 000000000..6e4ce49b4
--- /dev/null
+++ b/drivers/mfd/da9063-core.c
@@ -0,0 +1,257 @@
+/*
+ * da9063-core.c: Device access for Dialog DA9063 modules
+ *
+ * Copyright 2012 Dialog Semiconductors Ltd.
+ * Copyright 2013 Philipp Zabel, Pengutronix
+ *
+ * Author: Krystian Garbaciak, Dialog Semiconductor
+ * Author: Michal Hajduk, Dialog Semiconductor
+ *
+ *  This program is free software; you can redistribute  it and/or modify it
+ *  under  the terms of  the GNU General  Public License as published by the
+ *  Free Software Foundation;  either version 2 of the  License, or (at your
+ *  option) any later version.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/device.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/mutex.h>
+#include <linux/mfd/core.h>
+#include <linux/regmap.h>
+
+#include <linux/mfd/da9063/core.h>
+#include <linux/mfd/da9063/pdata.h>
+#include <linux/mfd/da9063/registers.h>
+
+#include <linux/proc_fs.h>
+#include <linux/kthread.h>
+#include <linux/uaccess.h>
+
+
+static struct resource da9063_regulators_resources[] = {
+	{
+		.name	= "LDO_LIM",
+		.start	= DA9063_IRQ_LDO_LIM,
+		.end	= DA9063_IRQ_LDO_LIM,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct resource da9063_rtc_resources[] = {
+	{
+		.name	= "ALARM",
+		.start	= DA9063_IRQ_ALARM,
+		.end	= DA9063_IRQ_ALARM,
+		.flags	= IORESOURCE_IRQ,
+	},
+	{
+		.name	= "TICK",
+		.start	= DA9063_IRQ_TICK,
+		.end	= DA9063_IRQ_TICK,
+		.flags	= IORESOURCE_IRQ,
+	}
+};
+
+static struct resource da9063_onkey_resources[] = {
+	{
+		.name	= "ONKEY",
+		.start	= DA9063_IRQ_ONKEY,
+		.end	= DA9063_IRQ_ONKEY,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct resource da9063_hwmon_resources[] = {
+	{
+		.start	= DA9063_IRQ_ADC_RDY,
+		.end	= DA9063_IRQ_ADC_RDY,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+
+static const struct mfd_cell da9063_common_devs[] = {
+	{
+		.name		= DA9063_DRVNAME_REGULATORS,
+		.num_resources	= ARRAY_SIZE(da9063_regulators_resources),
+		.resources	= da9063_regulators_resources,
+	},
+	{
+		.name		= DA9063_DRVNAME_LEDS,
+	},
+	{
+		.name		= DA9063_DRVNAME_WATCHDOG,
+		.of_compatible	= "dlg,da9063-watchdog",
+	},
+	{
+		.name		= DA9063_DRVNAME_HWMON,
+		.num_resources	= ARRAY_SIZE(da9063_hwmon_resources),
+		.resources	= da9063_hwmon_resources,
+	},
+	{
+		.name		= DA9063_DRVNAME_ONKEY,
+		.num_resources	= ARRAY_SIZE(da9063_onkey_resources),
+		.resources	= da9063_onkey_resources,
+		.of_compatible = "dlg,da9063-onkey",
+	},
+	{
+		.name		= DA9063_DRVNAME_VIBRATION,
+	},
+};
+
+/* Only present on DA9063 , not on DA9063L */
+static const struct mfd_cell da9063_devs[] = {
+	{
+		.name		= DA9063_DRVNAME_RTC,
+		.num_resources	= ARRAY_SIZE(da9063_rtc_resources),
+		.resources	= da9063_rtc_resources,
+		.of_compatible	= "dlg,da9063-rtc",
+	},
+};
+
+static int da9063_clear_fault_log(struct da9063 *da9063)
+{
+	int ret = 0;
+	int fault_log = 0;
+
+	ret = regmap_read(da9063->regmap, DA9063_REG_FAULT_LOG, &fault_log);
+	if (ret < 0) {
+		dev_err(da9063->dev, "Cannot read FAULT_LOG.\n");
+		return -EIO;
+	}
+
+	if (fault_log) {
+		if (fault_log & DA9063_TWD_ERROR)
+			dev_dbg(da9063->dev,
+				"Fault log entry detected: DA9063_TWD_ERROR\n");
+		if (fault_log & DA9063_POR)
+			dev_dbg(da9063->dev,
+				"Fault log entry detected: DA9063_POR\n");
+		if (fault_log & DA9063_VDD_FAULT)
+			dev_dbg(da9063->dev,
+				"Fault log entry detected: DA9063_VDD_FAULT\n");
+		if (fault_log & DA9063_VDD_START)
+			dev_dbg(da9063->dev,
+				"Fault log entry detected: DA9063_VDD_START\n");
+		if (fault_log & DA9063_TEMP_CRIT)
+			dev_dbg(da9063->dev,
+				"Fault log entry detected: DA9063_TEMP_CRIT\n");
+		if (fault_log & DA9063_KEY_RESET)
+			dev_dbg(da9063->dev,
+				"Fault log entry detected: DA9063_KEY_RESET\n");
+		if (fault_log & DA9063_NSHUTDOWN)
+			dev_dbg(da9063->dev,
+				"Fault log entry detected: DA9063_NSHUTDOWN\n");
+		if (fault_log & DA9063_WAIT_SHUT)
+			dev_dbg(da9063->dev,
+				"Fault log entry detected: DA9063_WAIT_SHUT\n");
+	}
+
+	ret = regmap_write(da9063->regmap,
+			   DA9063_REG_FAULT_LOG,
+			   fault_log);
+	if (ret < 0)
+		dev_err(da9063->dev,
+			"Cannot reset FAULT_LOG values %d\n", ret);
+
+	return ret;
+}
+
+int da9063_device_init(struct da9063 *da9063, unsigned int irq)
+{
+	struct da9063_pdata *pdata = da9063->dev->platform_data;
+	int model, variant_id, variant_code;
+	int ret;
+
+	ret = da9063_clear_fault_log(da9063);
+	if (ret < 0)
+		dev_err(da9063->dev, "Cannot clear fault log\n");
+
+	if (pdata) {
+		da9063->flags = pdata->flags;
+		da9063->irq_base = pdata->irq_base;
+	} else {
+		da9063->flags = 0;
+		da9063->irq_base = -1;
+	}
+	da9063->chip_irq = irq;
+
+	if (pdata && pdata->init != NULL) {
+		ret = pdata->init(da9063);
+		if (ret != 0) {
+			dev_err(da9063->dev,
+				"Platform initialization failed.\n");
+			return ret;
+		}
+	}
+
+	ret = regmap_read(da9063->regmap, DA9063_REG_CHIP_ID, &model);
+	if (ret < 0) {
+		dev_err(da9063->dev, "Cannot read chip model id.\n");
+		return -EIO;
+	}
+	if (model != PMIC_CHIP_ID_DA9063) {
+		dev_err(da9063->dev, "Invalid chip model id: 0x%02x\n", model);
+		return -ENODEV;
+	}
+
+	ret = regmap_read(da9063->regmap, DA9063_REG_CHIP_VARIANT, &variant_id);
+	if (ret < 0) {
+		dev_err(da9063->dev, "Cannot read chip variant id.\n");
+		return -EIO;
+	}
+
+	variant_code = variant_id >> DA9063_CHIP_VARIANT_SHIFT;
+
+	dev_info(da9063->dev,
+		 "Device detected (chip-ID: 0x%02X, var-ID: 0x%02X)\n",
+		 model, variant_id);
+
+	if (variant_code < PMIC_DA9063_BB && variant_code != PMIC_DA9063_AD) {
+		dev_err(da9063->dev,
+			"Cannot support variant code: 0x%02X\n", variant_code);
+		return -ENODEV;
+	}
+
+	da9063->variant_code = variant_code;
+
+	ret = da9063_irq_init(da9063);
+	if (ret) {
+		dev_err(da9063->dev, "Cannot initialize interrupts.\n");
+		return ret;
+	}
+
+	da9063->irq_base = regmap_irq_chip_get_base(da9063->regmap_irq);
+
+	ret = devm_mfd_add_devices(da9063->dev, PLATFORM_DEVID_NONE,
+				   da9063_common_devs,
+				   ARRAY_SIZE(da9063_common_devs),
+				   NULL, da9063->irq_base, NULL);
+	if (ret) {
+		dev_err(da9063->dev, "Failed to add child devices\n");
+		return ret;
+	}
+
+	if (da9063->type == PMIC_TYPE_DA9063) {
+		ret = devm_mfd_add_devices(da9063->dev, PLATFORM_DEVID_NONE,
+					   da9063_devs, ARRAY_SIZE(da9063_devs),
+					   NULL, da9063->irq_base, NULL);
+		if (ret) {
+			dev_err(da9063->dev, "Failed to add child devices\n");
+			return ret;
+		}
+	}
+
+	return ret;
+}
+
+MODULE_DESCRIPTION("PMIC driver for Dialog DA9063");
+MODULE_AUTHOR("Krystian Garbaciak");
+MODULE_AUTHOR("Michal Hajduk");
+MODULE_LICENSE("GPL");