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-rw-r--r--drivers/mfd/88pm800.c619
1 files changed, 619 insertions, 0 deletions
diff --git a/drivers/mfd/88pm800.c b/drivers/mfd/88pm800.c
new file mode 100644
index 0000000000..300caa0673
--- /dev/null
+++ b/drivers/mfd/88pm800.c
@@ -0,0 +1,619 @@
+/*
+ * Base driver for Marvell 88PM800
+ *
+ * Copyright (C) 2012 Marvell International Ltd.
+ * Haojian Zhuang <haojian.zhuang@marvell.com>
+ * Joseph(Yossi) Hanin <yhanin@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/err.h>
+#include <linux/i2c.h>
+#include <linux/mfd/core.h>
+#include <linux/mfd/88pm80x.h>
+#include <linux/slab.h>
+
+/* Interrupt Registers */
+#define PM800_INT_STATUS1 (0x05)
+#define PM800_ONKEY_INT_STS1 (1 << 0)
+#define PM800_EXTON_INT_STS1 (1 << 1)
+#define PM800_CHG_INT_STS1 (1 << 2)
+#define PM800_BAT_INT_STS1 (1 << 3)
+#define PM800_RTC_INT_STS1 (1 << 4)
+#define PM800_CLASSD_OC_INT_STS1 (1 << 5)
+
+#define PM800_INT_STATUS2 (0x06)
+#define PM800_VBAT_INT_STS2 (1 << 0)
+#define PM800_VSYS_INT_STS2 (1 << 1)
+#define PM800_VCHG_INT_STS2 (1 << 2)
+#define PM800_TINT_INT_STS2 (1 << 3)
+#define PM800_GPADC0_INT_STS2 (1 << 4)
+#define PM800_TBAT_INT_STS2 (1 << 5)
+#define PM800_GPADC2_INT_STS2 (1 << 6)
+#define PM800_GPADC3_INT_STS2 (1 << 7)
+
+#define PM800_INT_STATUS3 (0x07)
+
+#define PM800_INT_STATUS4 (0x08)
+#define PM800_GPIO0_INT_STS4 (1 << 0)
+#define PM800_GPIO1_INT_STS4 (1 << 1)
+#define PM800_GPIO2_INT_STS4 (1 << 2)
+#define PM800_GPIO3_INT_STS4 (1 << 3)
+#define PM800_GPIO4_INT_STS4 (1 << 4)
+
+#define PM800_INT_ENA_1 (0x09)
+#define PM800_ONKEY_INT_ENA1 (1 << 0)
+#define PM800_EXTON_INT_ENA1 (1 << 1)
+#define PM800_CHG_INT_ENA1 (1 << 2)
+#define PM800_BAT_INT_ENA1 (1 << 3)
+#define PM800_RTC_INT_ENA1 (1 << 4)
+#define PM800_CLASSD_OC_INT_ENA1 (1 << 5)
+
+#define PM800_INT_ENA_2 (0x0A)
+#define PM800_VBAT_INT_ENA2 (1 << 0)
+#define PM800_VSYS_INT_ENA2 (1 << 1)
+#define PM800_VCHG_INT_ENA2 (1 << 2)
+#define PM800_TINT_INT_ENA2 (1 << 3)
+
+#define PM800_INT_ENA_3 (0x0B)
+#define PM800_GPADC0_INT_ENA3 (1 << 0)
+#define PM800_GPADC1_INT_ENA3 (1 << 1)
+#define PM800_GPADC2_INT_ENA3 (1 << 2)
+#define PM800_GPADC3_INT_ENA3 (1 << 3)
+#define PM800_GPADC4_INT_ENA3 (1 << 4)
+
+#define PM800_INT_ENA_4 (0x0C)
+#define PM800_GPIO0_INT_ENA4 (1 << 0)
+#define PM800_GPIO1_INT_ENA4 (1 << 1)
+#define PM800_GPIO2_INT_ENA4 (1 << 2)
+#define PM800_GPIO3_INT_ENA4 (1 << 3)
+#define PM800_GPIO4_INT_ENA4 (1 << 4)
+
+/* number of INT_ENA & INT_STATUS regs */
+#define PM800_INT_REG_NUM (4)
+
+/* Interrupt Number in 88PM800 */
+enum {
+ PM800_IRQ_ONKEY, /*EN1b0 *//*0 */
+ PM800_IRQ_EXTON, /*EN1b1 */
+ PM800_IRQ_CHG, /*EN1b2 */
+ PM800_IRQ_BAT, /*EN1b3 */
+ PM800_IRQ_RTC, /*EN1b4 */
+ PM800_IRQ_CLASSD, /*EN1b5 *//*5 */
+ PM800_IRQ_VBAT, /*EN2b0 */
+ PM800_IRQ_VSYS, /*EN2b1 */
+ PM800_IRQ_VCHG, /*EN2b2 */
+ PM800_IRQ_TINT, /*EN2b3 */
+ PM800_IRQ_GPADC0, /*EN3b0 *//*10 */
+ PM800_IRQ_GPADC1, /*EN3b1 */
+ PM800_IRQ_GPADC2, /*EN3b2 */
+ PM800_IRQ_GPADC3, /*EN3b3 */
+ PM800_IRQ_GPADC4, /*EN3b4 */
+ PM800_IRQ_GPIO0, /*EN4b0 *//*15 */
+ PM800_IRQ_GPIO1, /*EN4b1 */
+ PM800_IRQ_GPIO2, /*EN4b2 */
+ PM800_IRQ_GPIO3, /*EN4b3 */
+ PM800_IRQ_GPIO4, /*EN4b4 *//*19 */
+ PM800_MAX_IRQ,
+};
+
+/* PM800: generation identification number */
+#define PM800_CHIP_GEN_ID_NUM 0x3
+
+static const struct i2c_device_id pm80x_id_table[] = {
+ {"88PM800", 0},
+ {} /* NULL terminated */
+};
+MODULE_DEVICE_TABLE(i2c, pm80x_id_table);
+
+static const struct resource rtc_resources[] = {
+ DEFINE_RES_IRQ_NAMED(PM800_IRQ_RTC, "88pm80x-rtc"),
+};
+
+static struct mfd_cell rtc_devs[] = {
+ {
+ .name = "88pm80x-rtc",
+ .num_resources = ARRAY_SIZE(rtc_resources),
+ .resources = &rtc_resources[0],
+ .id = -1,
+ },
+};
+
+static struct resource onkey_resources[] = {
+ DEFINE_RES_IRQ_NAMED(PM800_IRQ_ONKEY, "88pm80x-onkey"),
+};
+
+static const struct mfd_cell onkey_devs[] = {
+ {
+ .name = "88pm80x-onkey",
+ .num_resources = 1,
+ .resources = &onkey_resources[0],
+ .id = -1,
+ },
+};
+
+static const struct mfd_cell regulator_devs[] = {
+ {
+ .name = "88pm80x-regulator",
+ .id = -1,
+ },
+};
+
+static const struct regmap_irq pm800_irqs[] = {
+ /* INT0 */
+ [PM800_IRQ_ONKEY] = {
+ .mask = PM800_ONKEY_INT_ENA1,
+ },
+ [PM800_IRQ_EXTON] = {
+ .mask = PM800_EXTON_INT_ENA1,
+ },
+ [PM800_IRQ_CHG] = {
+ .mask = PM800_CHG_INT_ENA1,
+ },
+ [PM800_IRQ_BAT] = {
+ .mask = PM800_BAT_INT_ENA1,
+ },
+ [PM800_IRQ_RTC] = {
+ .mask = PM800_RTC_INT_ENA1,
+ },
+ [PM800_IRQ_CLASSD] = {
+ .mask = PM800_CLASSD_OC_INT_ENA1,
+ },
+ /* INT1 */
+ [PM800_IRQ_VBAT] = {
+ .reg_offset = 1,
+ .mask = PM800_VBAT_INT_ENA2,
+ },
+ [PM800_IRQ_VSYS] = {
+ .reg_offset = 1,
+ .mask = PM800_VSYS_INT_ENA2,
+ },
+ [PM800_IRQ_VCHG] = {
+ .reg_offset = 1,
+ .mask = PM800_VCHG_INT_ENA2,
+ },
+ [PM800_IRQ_TINT] = {
+ .reg_offset = 1,
+ .mask = PM800_TINT_INT_ENA2,
+ },
+ /* INT2 */
+ [PM800_IRQ_GPADC0] = {
+ .reg_offset = 2,
+ .mask = PM800_GPADC0_INT_ENA3,
+ },
+ [PM800_IRQ_GPADC1] = {
+ .reg_offset = 2,
+ .mask = PM800_GPADC1_INT_ENA3,
+ },
+ [PM800_IRQ_GPADC2] = {
+ .reg_offset = 2,
+ .mask = PM800_GPADC2_INT_ENA3,
+ },
+ [PM800_IRQ_GPADC3] = {
+ .reg_offset = 2,
+ .mask = PM800_GPADC3_INT_ENA3,
+ },
+ [PM800_IRQ_GPADC4] = {
+ .reg_offset = 2,
+ .mask = PM800_GPADC4_INT_ENA3,
+ },
+ /* INT3 */
+ [PM800_IRQ_GPIO0] = {
+ .reg_offset = 3,
+ .mask = PM800_GPIO0_INT_ENA4,
+ },
+ [PM800_IRQ_GPIO1] = {
+ .reg_offset = 3,
+ .mask = PM800_GPIO1_INT_ENA4,
+ },
+ [PM800_IRQ_GPIO2] = {
+ .reg_offset = 3,
+ .mask = PM800_GPIO2_INT_ENA4,
+ },
+ [PM800_IRQ_GPIO3] = {
+ .reg_offset = 3,
+ .mask = PM800_GPIO3_INT_ENA4,
+ },
+ [PM800_IRQ_GPIO4] = {
+ .reg_offset = 3,
+ .mask = PM800_GPIO4_INT_ENA4,
+ },
+};
+
+static int device_gpadc_init(struct pm80x_chip *chip,
+ struct pm80x_platform_data *pdata)
+{
+ struct pm80x_subchip *subchip = chip->subchip;
+ struct regmap *map = subchip->regmap_gpadc;
+ int data = 0, mask = 0, ret = 0;
+
+ if (!map) {
+ dev_warn(chip->dev,
+ "Warning: gpadc regmap is not available!\n");
+ return -EINVAL;
+ }
+ /*
+ * initialize GPADC without activating it turn on GPADC
+ * measurments
+ */
+ ret = regmap_update_bits(map,
+ PM800_GPADC_MISC_CONFIG2,
+ PM800_GPADC_MISC_GPFSM_EN,
+ PM800_GPADC_MISC_GPFSM_EN);
+ if (ret < 0)
+ goto out;
+ /*
+ * This function configures the ADC as requires for
+ * CP implementation.CP does not "own" the ADC configuration
+ * registers and relies on AP.
+ * Reason: enable automatic ADC measurements needed
+ * for CP to get VBAT and RF temperature readings.
+ */
+ ret = regmap_update_bits(map, PM800_GPADC_MEAS_EN1,
+ PM800_MEAS_EN1_VBAT, PM800_MEAS_EN1_VBAT);
+ if (ret < 0)
+ goto out;
+ ret = regmap_update_bits(map, PM800_GPADC_MEAS_EN2,
+ (PM800_MEAS_EN2_RFTMP | PM800_MEAS_GP0_EN),
+ (PM800_MEAS_EN2_RFTMP | PM800_MEAS_GP0_EN));
+ if (ret < 0)
+ goto out;
+
+ /*
+ * the defult of PM800 is GPADC operates at 100Ks/s rate
+ * and Number of GPADC slots with active current bias prior
+ * to GPADC sampling = 1 slot for all GPADCs set for
+ * Temprature mesurmants
+ */
+ mask = (PM800_GPADC_GP_BIAS_EN0 | PM800_GPADC_GP_BIAS_EN1 |
+ PM800_GPADC_GP_BIAS_EN2 | PM800_GPADC_GP_BIAS_EN3);
+
+ if (pdata && (pdata->batt_det == 0))
+ data = (PM800_GPADC_GP_BIAS_EN0 | PM800_GPADC_GP_BIAS_EN1 |
+ PM800_GPADC_GP_BIAS_EN2 | PM800_GPADC_GP_BIAS_EN3);
+ else
+ data = (PM800_GPADC_GP_BIAS_EN0 | PM800_GPADC_GP_BIAS_EN2 |
+ PM800_GPADC_GP_BIAS_EN3);
+
+ ret = regmap_update_bits(map, PM800_GP_BIAS_ENA1, mask, data);
+ if (ret < 0)
+ goto out;
+
+ dev_info(chip->dev, "pm800 device_gpadc_init: Done\n");
+ return 0;
+
+out:
+ dev_info(chip->dev, "pm800 device_gpadc_init: Failed!\n");
+ return ret;
+}
+
+static int device_onkey_init(struct pm80x_chip *chip,
+ struct pm80x_platform_data *pdata)
+{
+ int ret;
+
+ ret = mfd_add_devices(chip->dev, 0, &onkey_devs[0],
+ ARRAY_SIZE(onkey_devs), &onkey_resources[0], 0,
+ NULL);
+ if (ret) {
+ dev_err(chip->dev, "Failed to add onkey subdev\n");
+ return ret;
+ }
+
+ return 0;
+}
+
+static int device_rtc_init(struct pm80x_chip *chip,
+ struct pm80x_platform_data *pdata)
+{
+ int ret;
+
+ if (pdata) {
+ rtc_devs[0].platform_data = pdata->rtc;
+ rtc_devs[0].pdata_size =
+ pdata->rtc ? sizeof(struct pm80x_rtc_pdata) : 0;
+ }
+ ret = mfd_add_devices(chip->dev, 0, &rtc_devs[0],
+ ARRAY_SIZE(rtc_devs), NULL, 0, NULL);
+ if (ret) {
+ dev_err(chip->dev, "Failed to add rtc subdev\n");
+ return ret;
+ }
+
+ return 0;
+}
+
+static int device_regulator_init(struct pm80x_chip *chip,
+ struct pm80x_platform_data *pdata)
+{
+ int ret;
+
+ ret = mfd_add_devices(chip->dev, 0, &regulator_devs[0],
+ ARRAY_SIZE(regulator_devs), NULL, 0, NULL);
+ if (ret) {
+ dev_err(chip->dev, "Failed to add regulator subdev\n");
+ return ret;
+ }
+
+ return 0;
+}
+
+static int device_irq_init_800(struct pm80x_chip *chip)
+{
+ struct regmap *map = chip->regmap;
+ unsigned long flags = IRQF_ONESHOT;
+ int data, mask, ret = -EINVAL;
+
+ if (!map || !chip->irq) {
+ dev_err(chip->dev, "incorrect parameters\n");
+ return -EINVAL;
+ }
+
+ /*
+ * irq_mode defines the way of clearing interrupt. it's read-clear by
+ * default.
+ */
+ mask =
+ PM800_WAKEUP2_INV_INT | PM800_WAKEUP2_INT_CLEAR |
+ PM800_WAKEUP2_INT_MASK;
+
+ data = PM800_WAKEUP2_INT_CLEAR;
+ ret = regmap_update_bits(map, PM800_WAKEUP2, mask, data);
+
+ if (ret < 0)
+ goto out;
+
+ ret =
+ regmap_add_irq_chip(chip->regmap, chip->irq, flags, -1,
+ chip->regmap_irq_chip, &chip->irq_data);
+
+out:
+ return ret;
+}
+
+static void device_irq_exit_800(struct pm80x_chip *chip)
+{
+ regmap_del_irq_chip(chip->irq, chip->irq_data);
+}
+
+static struct regmap_irq_chip pm800_irq_chip = {
+ .name = "88pm800",
+ .irqs = pm800_irqs,
+ .num_irqs = ARRAY_SIZE(pm800_irqs),
+
+ .num_regs = 4,
+ .status_base = PM800_INT_STATUS1,
+ .unmask_base = PM800_INT_ENA_1,
+ .ack_base = PM800_INT_STATUS1,
+};
+
+static int pm800_pages_init(struct pm80x_chip *chip)
+{
+ struct pm80x_subchip *subchip;
+ struct i2c_client *client = chip->client;
+
+ int ret = 0;
+
+ subchip = chip->subchip;
+ if (!subchip || !subchip->power_page_addr || !subchip->gpadc_page_addr)
+ return -ENODEV;
+
+ /* PM800 block power page */
+ subchip->power_page = i2c_new_dummy_device(client->adapter,
+ subchip->power_page_addr);
+ if (IS_ERR(subchip->power_page)) {
+ ret = PTR_ERR(subchip->power_page);
+ goto out;
+ }
+
+ subchip->regmap_power = devm_regmap_init_i2c(subchip->power_page,
+ &pm80x_regmap_config);
+ if (IS_ERR(subchip->regmap_power)) {
+ ret = PTR_ERR(subchip->regmap_power);
+ dev_err(chip->dev,
+ "Failed to allocate regmap_power: %d\n", ret);
+ goto out;
+ }
+
+ i2c_set_clientdata(subchip->power_page, chip);
+
+ /* PM800 block GPADC */
+ subchip->gpadc_page = i2c_new_dummy_device(client->adapter,
+ subchip->gpadc_page_addr);
+ if (IS_ERR(subchip->gpadc_page)) {
+ ret = PTR_ERR(subchip->gpadc_page);
+ goto out;
+ }
+
+ subchip->regmap_gpadc = devm_regmap_init_i2c(subchip->gpadc_page,
+ &pm80x_regmap_config);
+ if (IS_ERR(subchip->regmap_gpadc)) {
+ ret = PTR_ERR(subchip->regmap_gpadc);
+ dev_err(chip->dev,
+ "Failed to allocate regmap_gpadc: %d\n", ret);
+ goto out;
+ }
+ i2c_set_clientdata(subchip->gpadc_page, chip);
+
+out:
+ return ret;
+}
+
+static void pm800_pages_exit(struct pm80x_chip *chip)
+{
+ struct pm80x_subchip *subchip;
+
+ subchip = chip->subchip;
+
+ if (subchip && subchip->power_page)
+ i2c_unregister_device(subchip->power_page);
+
+ if (subchip && subchip->gpadc_page)
+ i2c_unregister_device(subchip->gpadc_page);
+}
+
+static int device_800_init(struct pm80x_chip *chip,
+ struct pm80x_platform_data *pdata)
+{
+ int ret;
+ unsigned int val;
+
+ /*
+ * alarm wake up bit will be clear in device_irq_init(),
+ * read before that
+ */
+ ret = regmap_read(chip->regmap, PM800_RTC_CONTROL, &val);
+ if (ret < 0) {
+ dev_err(chip->dev, "Failed to read RTC register: %d\n", ret);
+ goto out;
+ }
+ if (val & PM800_ALARM_WAKEUP) {
+ if (pdata && pdata->rtc)
+ pdata->rtc->rtc_wakeup = 1;
+ }
+
+ ret = device_gpadc_init(chip, pdata);
+ if (ret < 0) {
+ dev_err(chip->dev, "[%s]Failed to init gpadc\n", __func__);
+ goto out;
+ }
+
+ chip->regmap_irq_chip = &pm800_irq_chip;
+
+ ret = device_irq_init_800(chip);
+ if (ret < 0) {
+ dev_err(chip->dev, "[%s]Failed to init pm800 irq\n", __func__);
+ goto out;
+ }
+
+ ret = device_onkey_init(chip, pdata);
+ if (ret) {
+ dev_err(chip->dev, "Failed to add onkey subdev\n");
+ goto out_dev;
+ }
+
+ ret = device_rtc_init(chip, pdata);
+ if (ret) {
+ dev_err(chip->dev, "Failed to add rtc subdev\n");
+ goto out;
+ }
+
+ ret = device_regulator_init(chip, pdata);
+ if (ret) {
+ dev_err(chip->dev, "Failed to add regulators subdev\n");
+ goto out;
+ }
+
+ return 0;
+out_dev:
+ mfd_remove_devices(chip->dev);
+ device_irq_exit_800(chip);
+out:
+ return ret;
+}
+
+static int pm800_probe(struct i2c_client *client)
+{
+ int ret = 0;
+ struct pm80x_chip *chip;
+ struct pm80x_platform_data *pdata = dev_get_platdata(&client->dev);
+ struct pm80x_subchip *subchip;
+
+ ret = pm80x_init(client);
+ if (ret) {
+ dev_err(&client->dev, "pm800_init fail\n");
+ goto out_init;
+ }
+
+ chip = i2c_get_clientdata(client);
+
+ /* init subchip for PM800 */
+ subchip =
+ devm_kzalloc(&client->dev, sizeof(struct pm80x_subchip),
+ GFP_KERNEL);
+ if (!subchip) {
+ ret = -ENOMEM;
+ goto err_subchip_alloc;
+ }
+
+ /* pm800 has 2 addtional pages to support power and gpadc. */
+ subchip->power_page_addr = client->addr + 1;
+ subchip->gpadc_page_addr = client->addr + 2;
+ chip->subchip = subchip;
+
+ ret = pm800_pages_init(chip);
+ if (ret) {
+ dev_err(&client->dev, "pm800_pages_init failed!\n");
+ goto err_device_init;
+ }
+
+ ret = device_800_init(chip, pdata);
+ if (ret) {
+ dev_err(chip->dev, "Failed to initialize 88pm800 devices\n");
+ goto err_device_init;
+ }
+
+ if (pdata && pdata->plat_config)
+ pdata->plat_config(chip, pdata);
+
+ return 0;
+
+err_device_init:
+ pm800_pages_exit(chip);
+err_subchip_alloc:
+ pm80x_deinit();
+out_init:
+ return ret;
+}
+
+static void pm800_remove(struct i2c_client *client)
+{
+ struct pm80x_chip *chip = i2c_get_clientdata(client);
+
+ mfd_remove_devices(chip->dev);
+ device_irq_exit_800(chip);
+
+ pm800_pages_exit(chip);
+ pm80x_deinit();
+}
+
+static struct i2c_driver pm800_driver = {
+ .driver = {
+ .name = "88PM800",
+ .pm = pm_sleep_ptr(&pm80x_pm_ops),
+ },
+ .probe = pm800_probe,
+ .remove = pm800_remove,
+ .id_table = pm80x_id_table,
+};
+
+static int __init pm800_i2c_init(void)
+{
+ return i2c_add_driver(&pm800_driver);
+}
+subsys_initcall(pm800_i2c_init);
+
+static void __exit pm800_i2c_exit(void)
+{
+ i2c_del_driver(&pm800_driver);
+}
+module_exit(pm800_i2c_exit);
+
+MODULE_DESCRIPTION("PMIC Driver for Marvell 88PM800");
+MODULE_AUTHOR("Qiao Zhou <zhouqiao@marvell.com>");
+MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-15 17:41:48 +0000