drivers/regulator/tps65185.c - pub/scm/linux/kernel/git/next/linux-next - Git at Google

 // SPDX-License-Identifier: GPL-2.0-only
 // Copyright (C) 2025 Andreas Kemnade

 /* Datasheet: https://www.ti.com/lit/gpn/tps65185 */

 #include <linux/cleanup.h>
 #include <linux/completion.h>
 #include <linux/gpio/consumer.h>
 #include <linux/i2c.h>
 #include <linux/module.h>
 #include <linux/mutex.h>
 #include <linux/hwmon.h>
 #include <linux/pm_runtime.h>
 #include <linux/property.h>
 #include <linux/regulator/consumer.h>
 #include <linux/regulator/driver.h>
 #include <linux/regulator/machine.h>
 #include <linux/regmap.h>

 #define TPS65185_REG_TMST_VALUE 0
 #define TPS65185_REG_ENABLE 1
 #define TPS65185_REG_VADJ 2
 #define TPS65185_REG_VCOM1 3
 #define TPS65185_REG_VCOM2 4
 #define TPS65185_REG_INT_EN1 5
 #define TPS65185_REG_INT_EN2 6
 #define TPS65185_REG_INT1 7
 #define TPS65185_REG_INT2 8
 #define TPS65185_REG_TMST1 0xd
 #define TPS65185_REG_TMST2 0xe
 #define TPS65185_REG_PG 0xf
 #define TPS65185_REG_REVID 0x10

 #define TPS65185_READ_THERM BIT(7)
 #define TPS65185_CONV_END BIT(5)

 #define TPS65185_ENABLE_ACTIVE BIT(7)
 #define TPS65185_ENABLE_STANDBY BIT(6)

 #define PGOOD_TIMEOUT_MSECS 200

 struct tps65185_data {
 	struct device *dev;
 	struct regmap *regmap;
 	struct gpio_desc *pgood_gpio;
 	struct gpio_desc *pwrup_gpio;
 	struct gpio_desc *vcom_ctrl_gpio;
 	struct gpio_desc *wakeup_gpio;
 	struct completion pgood_completion;
 	int pgood_irq;
 	struct completion tmst_completion;
 };

 static const struct hwmon_channel_info *tps65185_info[] = {
 	HWMON_CHANNEL_INFO(chip, HWMON_C_REGISTER_TZ),
 	HWMON_CHANNEL_INFO(temp, HWMON_T_INPUT),
 	NULL
 };

 static int tps65185_hwmon_read(struct device *dev, enum hwmon_sensor_types type,
 			       u32 attr, int channel, long *temp)
 {
 	struct tps65185_data *data = dev_get_drvdata(dev);
 	unsigned int val;
 	int ret;

 	reinit_completion(&data->tmst_completion);
 	/* start acquisition */
 	regmap_update_bits(data->regmap, TPS65185_REG_TMST1,
 			   TPS65185_READ_THERM, TPS65185_READ_THERM);
 	wait_for_completion_timeout(&data->tmst_completion,
 				    msecs_to_jiffies(PGOOD_TIMEOUT_MSECS));
 	ret = regmap_read(data->regmap, TPS65185_REG_TMST1, &val);
 	if (!(val & TPS65185_CONV_END))
 		return -ETIMEDOUT;

 	ret = regmap_read(data->regmap, TPS65185_REG_TMST_VALUE, &val);
 	if (ret)
 		return ret;

 	*temp = (s8)val * 1000;

 	return 0;
 }

 static umode_t tps65185_hwmon_is_visible(const void *data,
 					 enum hwmon_sensor_types type,
 					 u32 attr, int channel)
 {
 	return 0444;
 }

 static const struct hwmon_ops tps65185_hwmon_ops = {
 	.is_visible = tps65185_hwmon_is_visible,
 	.read = tps65185_hwmon_read,
 };

 static const struct hwmon_chip_info tps65185_chip_info = {
 	.ops = &tps65185_hwmon_ops,
 	.info = tps65185_info,
 };

 static bool tps65185_volatile_reg(struct device *dev, unsigned int reg)
 {
 	switch (reg) {
 	case TPS65185_REG_TMST_VALUE:
 	case TPS65185_REG_ENABLE:
 	case TPS65185_REG_VCOM2:
 	case TPS65185_REG_INT1:
 	case TPS65185_REG_INT2:
 	case TPS65185_REG_TMST1:
 		return true;
 	default:
 		return false;
 	}
 }

 static const struct regmap_config regmap_config = {
 	.reg_bits = 8,
 	.val_bits = 8,
 	.max_register = 0x10,
 	.cache_type = REGCACHE_MAPLE,
 	.volatile_reg = tps65185_volatile_reg,
 };

 static const struct regulator_ops tps65185_v3p3ops = {
 	.list_voltage = regulator_list_voltage_linear,
 	.enable = regulator_enable_regmap,
 	.disable = regulator_disable_regmap,
 	.is_enabled = regulator_is_enabled_regmap,
 };

 static int tps65185_check_powergood(struct regulator_dev *rdev)
 {
 	struct tps65185_data *data = rdev_get_drvdata(rdev);

 	return gpiod_get_value_cansleep(data->pgood_gpio);
 }

 static int tps65185_vposneg_get_voltage_sel(struct regulator_dev *rdev)
 {
 	int ret;

 	ret = regulator_get_voltage_sel_regmap(rdev);
 	if (ret < 0)
 		return ret;

 	/* highest value is lowest voltage */
 	return 6 - ret;
 }

 static int tps65185_vposneg_set_voltage_sel(struct regulator_dev *rdev, unsigned int selector)
 {
 	return regulator_set_voltage_sel_regmap(rdev, 6 - selector);
 }

 static irqreturn_t pgood_handler(int irq, void *dev_id)
 {
 	struct tps65185_data *data = dev_id;

 	complete(&data->pgood_completion);

 	return IRQ_HANDLED;
 }

 static int tps65185_vposneg_enable(struct regulator_dev *rdev)
 {
 	struct tps65185_data *data = rdev_get_drvdata(rdev);
 	int ret;

 	reinit_completion(&data->pgood_completion);
 	if (data->pwrup_gpio)
 		ret = gpiod_set_value_cansleep(data->pwrup_gpio, 1);
 	else
 		ret = regmap_update_bits(data->regmap, TPS65185_REG_ENABLE,
 					 TPS65185_ENABLE_ACTIVE,
 					 TPS65185_ENABLE_ACTIVE);

 	if (ret)
 		return ret;

 	dev_dbg(data->dev, "turning on...");
 	wait_for_completion_timeout(&data->pgood_completion,
 				    msecs_to_jiffies(PGOOD_TIMEOUT_MSECS));
 	dev_dbg(data->dev, "turned on");
 	if (gpiod_get_value_cansleep(data->pgood_gpio) != 1)
 		return -ETIMEDOUT;

 	return 0;
 }

 static int tps65185_vposneg_disable(struct regulator_dev *rdev)
 {
 	struct tps65185_data *data = rdev_get_drvdata(rdev);
 	int ret;

 	if (data->pwrup_gpio)
 		ret = gpiod_set_value_cansleep(data->pwrup_gpio, 0);
 	else
 		ret = regmap_update_bits(data->regmap, TPS65185_REG_ENABLE,
 					 TPS65185_ENABLE_STANDBY,
 					 TPS65185_ENABLE_STANDBY);

 	return ret;
 }

 static int tps65185_vcom_set_voltage_sel(struct regulator_dev *rdev, unsigned int selector)
 {
 	struct tps65185_data *data = rdev_get_drvdata(rdev);
 	int ret;

 	ret = regmap_update_bits(data->regmap, TPS65185_REG_VCOM2, BIT(0), selector >> 8);
 	if (ret < 0)
 		return ret;

 	return regmap_write(data->regmap, TPS65185_REG_VCOM1, selector & 0xFF);
 }

 static int tps65185_vcom_get_voltage_sel(struct regulator_dev *rdev)
 {
 	struct tps65185_data *data = rdev_get_drvdata(rdev);
 	int ret;
 	unsigned int sel, sel2;

 	ret = regmap_read(data->regmap, TPS65185_REG_VCOM1, &sel);
 	if (ret < 0)
 		return ret;

 	ret = regmap_read(data->regmap, TPS65185_REG_VCOM2, &sel2);
 	if (ret < 0)
 		return ret;

 	if (sel2 & BIT(0))
 		sel |= 0x100;

 	return sel;
 }

 static const struct regulator_ops tps65185_vcom_ops = {
 	.list_voltage = regulator_list_voltage_linear,
 	.map_voltage = regulator_map_voltage_linear,
 	.set_voltage_sel = tps65185_vcom_set_voltage_sel,
 	.get_voltage_sel = tps65185_vcom_get_voltage_sel,
 };

 static const struct regulator_ops tps65185_vposneg_ops = {
 	.list_voltage = regulator_list_voltage_linear,
 	.map_voltage = regulator_map_voltage_linear,
 	.enable = tps65185_vposneg_enable,
 	.disable = tps65185_vposneg_disable,
 	.is_enabled = tps65185_check_powergood,
 	.set_voltage_sel = tps65185_vposneg_set_voltage_sel,
 	.get_voltage_sel = tps65185_vposneg_get_voltage_sel,
 };

 static const struct regulator_desc regulators[] = {
 	{
 		.name = "v3p3",
 		.of_match = of_match_ptr("v3p3"),
 		.regulators_node = of_match_ptr("regulators"),
 		.id = 0,
 		.ops = &tps65185_v3p3ops,
 		.type = REGULATOR_VOLTAGE,
 		.owner = THIS_MODULE,
 		.enable_reg = TPS65185_REG_ENABLE,
 		.enable_mask = BIT(5),
 		.n_voltages = 1,
 		.min_uV = 3300000,
 	},
 	{
 		.name = "vposneg",
 		.of_match = of_match_ptr("vposneg"),
 		.regulators_node = of_match_ptr("regulators"),
 		.id = 1,
 		.ops = &tps65185_vposneg_ops,
 		.type = REGULATOR_VOLTAGE,
 		.owner = THIS_MODULE,
 		.n_voltages = 4,
 		.vsel_reg = TPS65185_REG_VADJ,
 		.vsel_mask = 0x7,
 		.min_uV = 14250000,
 		.uV_step = 250000,
 	}
 };

 static const struct regulator_desc vcom_regulator_desc = {
 	.name = "vcom",
 	.of_match = of_match_ptr("vcom"),
 	.regulators_node = of_match_ptr("regulators"),
 	.supply_name = "vposneg",
 	.id = 2,
 	.ops = &tps65185_vcom_ops,
 	.type = REGULATOR_VOLTAGE,
 	.owner = THIS_MODULE,
 	.n_voltages = 511,
 	.min_uV = 0,
 	.uV_step = 10000,
 };

 static irqreturn_t tps65185_irq_thread(int irq, void *dev_id)
 {
 	struct tps65185_data *data = dev_id;
 	unsigned int int_status_1, int_status_2;
 	int ret;

 	/* read both status to have irq cleared */
 	ret = regmap_read(data->regmap, TPS65185_REG_INT1, &int_status_1);
 	if (ret)
 		return IRQ_NONE;

 	ret = regmap_read(data->regmap, TPS65185_REG_INT2, &int_status_2);
 	if (ret)
 		return IRQ_NONE;

 	if (int_status_2 & BIT(0))
 		complete(&data->tmst_completion);

 	dev_dbg(data->dev, "irq status %02x %02x\n", int_status_1, int_status_2);

 	if (int_status_1 || int_status_2)
 		return IRQ_HANDLED;

 	return IRQ_NONE;
 }

 static int tps65185_probe(struct i2c_client *client)
 {
 	struct tps65185_data *data;
 	struct regulator_config config = { };
 	struct regulator_dev *rdev;
 	int ret = 0;
 	int i;

 	data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
 	data->regmap = devm_regmap_init_i2c(client, &regmap_config);
 	if (IS_ERR(data->regmap))
 		return dev_err_probe(&client->dev, PTR_ERR(data->regmap),
 				     "failed to allocate regmap!\n");

 	data->pgood_gpio = devm_gpiod_get(&client->dev, "pwr-good", GPIOD_IN);
 	if (IS_ERR(data->pgood_gpio))
 		return dev_err_probe(&client->dev,
 				     PTR_ERR(data->pgood_gpio),
 				     "failed to get power good gpio\n");

 	data->pgood_irq = gpiod_to_irq(data->pgood_gpio);
 	if (data->pgood_irq < 0)
 		return data->pgood_irq;

 	data->pwrup_gpio = devm_gpiod_get_optional(&client->dev, "enable", GPIOD_OUT_LOW);
 	if (IS_ERR(data->pwrup_gpio))
 		return dev_err_probe(&client->dev, PTR_ERR(data->pwrup_gpio),
 				     "failed to get pwrup gpio\n");

 	data->wakeup_gpio = devm_gpiod_get_optional(&client->dev, "wakeup", GPIOD_OUT_HIGH);
 	if (IS_ERR(data->wakeup_gpio))
 		return dev_err_probe(&client->dev,
 				     PTR_ERR(data->wakeup_gpio),
 				     "failed to get wakeup gpio\n");

 	data->vcom_ctrl_gpio = devm_gpiod_get_optional(&client->dev, "vcom-ctrl", GPIOD_OUT_LOW);
 	if (IS_ERR(data->vcom_ctrl_gpio))
 		return dev_err_probe(&client->dev,
 				     PTR_ERR(data->vcom_ctrl_gpio),
 				     "failed to get vcm ctrl gpio\n");

 	ret = devm_regulator_get_enable(&client->dev, "vin");
 	if (ret)
 		return dev_err_probe(&client->dev, ret,
 				     "failed to get vin regulator\n");

 	data->dev = &client->dev;
 	i2c_set_clientdata(client, data);

 	init_completion(&data->pgood_completion);
 	init_completion(&data->tmst_completion);

 	ret = devm_request_threaded_irq(&client->dev, data->pgood_irq, NULL,
 					pgood_handler,
 					IRQF_TRIGGER_RISING | IRQF_ONESHOT,
 					"PGOOD", data);
 	if (ret)
 		return dev_err_probe(&client->dev, ret,
 				     "failed to request power good irq\n");

 	if (client->irq) {
 		ret = devm_request_threaded_irq(&client->dev, client->irq,
 						NULL, tps65185_irq_thread,
 						IRQF_TRIGGER_LOW | IRQF_ONESHOT,
 						"tps65185", data);
 		if (ret)
 			return dev_err_probe(&client->dev, ret,
 					     "failed to request irq\n");
 	}

 	ret = regmap_update_bits(data->regmap, TPS65185_REG_INT_EN2, BIT(0), BIT(0));
 	if (ret)
 		return dev_err_probe(&client->dev, ret,
 				     "failed to enable temp irq\n");

 	config.driver_data = data;
 	config.dev = &client->dev;
 	config.regmap = data->regmap;

 	for (i = 0; i < ARRAY_SIZE(regulators); i++) {
 		rdev = devm_regulator_register(&client->dev, &regulators[i],
 					       &config);
 		if (IS_ERR(rdev))
 			return dev_err_probe(&client->dev, PTR_ERR(rdev),
 					     "failed to register %s regulator\n",
 					     regulators[i].name);
 	}

 	config.ena_gpiod = data->vcom_ctrl_gpio;
 	rdev = devm_regulator_register(&client->dev, &vcom_regulator_desc, &config);
 	if (IS_ERR(rdev))
 		return dev_err_probe(&client->dev, PTR_ERR(rdev),
 				     "failed to register vcom regulator\n");

 	if (IS_REACHABLE(CONFIG_HWMON)) {
 		struct device *hwmon_dev;

 		hwmon_dev = devm_hwmon_device_register_with_info(&client->dev, "tps65185", data,
 								 &tps65185_chip_info, NULL);
 		if (IS_ERR(hwmon_dev))
 			dev_notice(&client->dev, "failed to register hwmon\n");
 	}

 	return 0;
 }

 static const struct of_device_id tps65185_dt_ids[] = {
 	{
 		.compatible = "ti,tps65185",
 	}, {
 		/* sentinel */
 	}
 };
 MODULE_DEVICE_TABLE(of, tps65185_dt_ids);

 static struct i2c_driver tps65185_i2c_driver = {
 	.driver = {
 		   .name = "tps65185",
 		   .of_match_table = tps65185_dt_ids,
 	},
 	.probe = tps65185_probe,
 };

 module_i2c_driver(tps65185_i2c_driver);

 /* Module information */
 MODULE_DESCRIPTION("TPS65185 regulator driver");
 MODULE_LICENSE("GPL");
	// SPDX-License-Identifier: GPL-2.0-only
	// Copyright (C) 2025 Andreas Kemnade

	/* Datasheet: https://www.ti.com/lit/gpn/tps65185 */

	#include <linux/cleanup.h>
	#include <linux/completion.h>
	#include <linux/gpio/consumer.h>
	#include <linux/i2c.h>
	#include <linux/module.h>
	#include <linux/mutex.h>
	#include <linux/hwmon.h>
	#include <linux/pm_runtime.h>
	#include <linux/property.h>
	#include <linux/regulator/consumer.h>
	#include <linux/regulator/driver.h>
	#include <linux/regulator/machine.h>
	#include <linux/regmap.h>

	#define TPS65185_REG_TMST_VALUE 0
	#define TPS65185_REG_ENABLE 1
	#define TPS65185_REG_VADJ 2
	#define TPS65185_REG_VCOM1 3
	#define TPS65185_REG_VCOM2 4
	#define TPS65185_REG_INT_EN1 5
	#define TPS65185_REG_INT_EN2 6
	#define TPS65185_REG_INT1 7
	#define TPS65185_REG_INT2 8
	#define TPS65185_REG_TMST1 0xd
	#define TPS65185_REG_TMST2 0xe
	#define TPS65185_REG_PG 0xf
	#define TPS65185_REG_REVID 0x10

	#define TPS65185_READ_THERM BIT(7)
	#define TPS65185_CONV_END BIT(5)

	#define TPS65185_ENABLE_ACTIVE BIT(7)
	#define TPS65185_ENABLE_STANDBY BIT(6)

	#define PGOOD_TIMEOUT_MSECS 200

	struct tps65185_data {
	struct device *dev;
	struct regmap *regmap;
	struct gpio_desc *pgood_gpio;
	struct gpio_desc *pwrup_gpio;
	struct gpio_desc *vcom_ctrl_gpio;
	struct gpio_desc *wakeup_gpio;
	struct completion pgood_completion;
	int pgood_irq;
	struct completion tmst_completion;
	};

	static const struct hwmon_channel_info *tps65185_info[] = {
	HWMON_CHANNEL_INFO(chip, HWMON_C_REGISTER_TZ),
	HWMON_CHANNEL_INFO(temp, HWMON_T_INPUT),
	NULL
	};

	static int tps65185_hwmon_read(struct device *dev, enum hwmon_sensor_types type,
	u32 attr, int channel, long *temp)
	{
	struct tps65185_data *data = dev_get_drvdata(dev);
	unsigned int val;
	int ret;

	reinit_completion(&data->tmst_completion);
	/* start acquisition */
	regmap_update_bits(data->regmap, TPS65185_REG_TMST1,
	TPS65185_READ_THERM, TPS65185_READ_THERM);
	wait_for_completion_timeout(&data->tmst_completion,
	msecs_to_jiffies(PGOOD_TIMEOUT_MSECS));
	ret = regmap_read(data->regmap, TPS65185_REG_TMST1, &val);
	if (!(val & TPS65185_CONV_END))
	return -ETIMEDOUT;

	ret = regmap_read(data->regmap, TPS65185_REG_TMST_VALUE, &val);
	if (ret)
	return ret;

	temp = (s8)val 1000;

	return 0;
	}

	static umode_t tps65185_hwmon_is_visible(const void *data,
	enum hwmon_sensor_types type,
	u32 attr, int channel)
	{
	return 0444;
	}

	static const struct hwmon_ops tps65185_hwmon_ops = {
	.is_visible = tps65185_hwmon_is_visible,
	.read = tps65185_hwmon_read,
	};

	static const struct hwmon_chip_info tps65185_chip_info = {
	.ops = &tps65185_hwmon_ops,
	.info = tps65185_info,
	};

	static bool tps65185_volatile_reg(struct device *dev, unsigned int reg)
	{
	switch (reg) {
	case TPS65185_REG_TMST_VALUE:
	case TPS65185_REG_ENABLE:
	case TPS65185_REG_VCOM2:
	case TPS65185_REG_INT1:
	case TPS65185_REG_INT2:
	case TPS65185_REG_TMST1:
	return true;
	default:
	return false;
	}
	}

	static const struct regmap_config regmap_config = {
	.reg_bits = 8,
	.val_bits = 8,
	.max_register = 0x10,
	.cache_type = REGCACHE_MAPLE,
	.volatile_reg = tps65185_volatile_reg,
	};

	static const struct regulator_ops tps65185_v3p3ops = {
	.list_voltage = regulator_list_voltage_linear,
	.enable = regulator_enable_regmap,
	.disable = regulator_disable_regmap,
	.is_enabled = regulator_is_enabled_regmap,
	};

	static int tps65185_check_powergood(struct regulator_dev *rdev)
	{
	struct tps65185_data *data = rdev_get_drvdata(rdev);

	return gpiod_get_value_cansleep(data->pgood_gpio);
	}

	static int tps65185_vposneg_get_voltage_sel(struct regulator_dev *rdev)
	{
	int ret;

	ret = regulator_get_voltage_sel_regmap(rdev);
	if (ret < 0)
	return ret;

	/* highest value is lowest voltage */
	return 6 - ret;
	}

	static int tps65185_vposneg_set_voltage_sel(struct regulator_dev *rdev, unsigned int selector)
	{
	return regulator_set_voltage_sel_regmap(rdev, 6 - selector);
	}

	static irqreturn_t pgood_handler(int irq, void *dev_id)
	{
	struct tps65185_data *data = dev_id;

	complete(&data->pgood_completion);

	return IRQ_HANDLED;
	}

	static int tps65185_vposneg_enable(struct regulator_dev *rdev)
	{
	struct tps65185_data *data = rdev_get_drvdata(rdev);
	int ret;

	reinit_completion(&data->pgood_completion);
	if (data->pwrup_gpio)
	ret = gpiod_set_value_cansleep(data->pwrup_gpio, 1);
	else
	ret = regmap_update_bits(data->regmap, TPS65185_REG_ENABLE,
	TPS65185_ENABLE_ACTIVE,
	TPS65185_ENABLE_ACTIVE);

	if (ret)
	return ret;

	dev_dbg(data->dev, "turning on...");
	wait_for_completion_timeout(&data->pgood_completion,
	msecs_to_jiffies(PGOOD_TIMEOUT_MSECS));
	dev_dbg(data->dev, "turned on");
	if (gpiod_get_value_cansleep(data->pgood_gpio) != 1)
	return -ETIMEDOUT;

	return 0;
	}

	static int tps65185_vposneg_disable(struct regulator_dev *rdev)
	{
	struct tps65185_data *data = rdev_get_drvdata(rdev);
	int ret;

	if (data->pwrup_gpio)
	ret = gpiod_set_value_cansleep(data->pwrup_gpio, 0);
	else
	ret = regmap_update_bits(data->regmap, TPS65185_REG_ENABLE,
	TPS65185_ENABLE_STANDBY,
	TPS65185_ENABLE_STANDBY);

	return ret;
	}

	static int tps65185_vcom_set_voltage_sel(struct regulator_dev *rdev, unsigned int selector)
	{
	struct tps65185_data *data = rdev_get_drvdata(rdev);
	int ret;

	ret = regmap_update_bits(data->regmap, TPS65185_REG_VCOM2, BIT(0), selector >> 8);
	if (ret < 0)
	return ret;

	return regmap_write(data->regmap, TPS65185_REG_VCOM1, selector & 0xFF);
	}

	static int tps65185_vcom_get_voltage_sel(struct regulator_dev *rdev)
	{
	struct tps65185_data *data = rdev_get_drvdata(rdev);
	int ret;
	unsigned int sel, sel2;

	ret = regmap_read(data->regmap, TPS65185_REG_VCOM1, &sel);
	if (ret < 0)
	return ret;

	ret = regmap_read(data->regmap, TPS65185_REG_VCOM2, &sel2);
	if (ret < 0)
	return ret;

	if (sel2 & BIT(0))
	sel \|= 0x100;

	return sel;
	}

	static const struct regulator_ops tps65185_vcom_ops = {
	.list_voltage = regulator_list_voltage_linear,
	.map_voltage = regulator_map_voltage_linear,
	.set_voltage_sel = tps65185_vcom_set_voltage_sel,
	.get_voltage_sel = tps65185_vcom_get_voltage_sel,
	};

	static const struct regulator_ops tps65185_vposneg_ops = {
	.list_voltage = regulator_list_voltage_linear,
	.map_voltage = regulator_map_voltage_linear,
	.enable = tps65185_vposneg_enable,
	.disable = tps65185_vposneg_disable,
	.is_enabled = tps65185_check_powergood,
	.set_voltage_sel = tps65185_vposneg_set_voltage_sel,
	.get_voltage_sel = tps65185_vposneg_get_voltage_sel,
	};

	static const struct regulator_desc regulators[] = {
	{
	.name = "v3p3",
	.of_match = of_match_ptr("v3p3"),
	.regulators_node = of_match_ptr("regulators"),
	.id = 0,
	.ops = &tps65185_v3p3ops,
	.type = REGULATOR_VOLTAGE,
	.owner = THIS_MODULE,
	.enable_reg = TPS65185_REG_ENABLE,
	.enable_mask = BIT(5),
	.n_voltages = 1,
	.min_uV = 3300000,
	},
	{
	.name = "vposneg",
	.of_match = of_match_ptr("vposneg"),
	.regulators_node = of_match_ptr("regulators"),
	.id = 1,
	.ops = &tps65185_vposneg_ops,
	.type = REGULATOR_VOLTAGE,
	.owner = THIS_MODULE,
	.n_voltages = 4,
	.vsel_reg = TPS65185_REG_VADJ,
	.vsel_mask = 0x7,
	.min_uV = 14250000,
	.uV_step = 250000,
	}
	};

	static const struct regulator_desc vcom_regulator_desc = {
	.name = "vcom",
	.of_match = of_match_ptr("vcom"),
	.regulators_node = of_match_ptr("regulators"),
	.supply_name = "vposneg",
	.id = 2,
	.ops = &tps65185_vcom_ops,
	.type = REGULATOR_VOLTAGE,
	.owner = THIS_MODULE,
	.n_voltages = 511,
	.min_uV = 0,
	.uV_step = 10000,
	};

	static irqreturn_t tps65185_irq_thread(int irq, void *dev_id)
	{
	struct tps65185_data *data = dev_id;
	unsigned int int_status_1, int_status_2;
	int ret;

	/* read both status to have irq cleared */
	ret = regmap_read(data->regmap, TPS65185_REG_INT1, &int_status_1);
	if (ret)
	return IRQ_NONE;

	ret = regmap_read(data->regmap, TPS65185_REG_INT2, &int_status_2);
	if (ret)
	return IRQ_NONE;

	if (int_status_2 & BIT(0))
	complete(&data->tmst_completion);

	dev_dbg(data->dev, "irq status %02x %02x\n", int_status_1, int_status_2);

	if (int_status_1 \|\| int_status_2)
	return IRQ_HANDLED;

	return IRQ_NONE;
	}

	static int tps65185_probe(struct i2c_client *client)
	{
	struct tps65185_data *data;
	struct regulator_config config = { };
	struct regulator_dev *rdev;
	int ret = 0;
	int i;

	data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
	data->regmap = devm_regmap_init_i2c(client, &regmap_config);
	if (IS_ERR(data->regmap))
	return dev_err_probe(&client->dev, PTR_ERR(data->regmap),
	"failed to allocate regmap!\n");

	data->pgood_gpio = devm_gpiod_get(&client->dev, "pwr-good", GPIOD_IN);
	if (IS_ERR(data->pgood_gpio))
	return dev_err_probe(&client->dev,
	PTR_ERR(data->pgood_gpio),
	"failed to get power good gpio\n");

	data->pgood_irq = gpiod_to_irq(data->pgood_gpio);
	if (data->pgood_irq < 0)
	return data->pgood_irq;

	data->pwrup_gpio = devm_gpiod_get_optional(&client->dev, "enable", GPIOD_OUT_LOW);
	if (IS_ERR(data->pwrup_gpio))
	return dev_err_probe(&client->dev, PTR_ERR(data->pwrup_gpio),
	"failed to get pwrup gpio\n");

	data->wakeup_gpio = devm_gpiod_get_optional(&client->dev, "wakeup", GPIOD_OUT_HIGH);
	if (IS_ERR(data->wakeup_gpio))
	return dev_err_probe(&client->dev,
	PTR_ERR(data->wakeup_gpio),
	"failed to get wakeup gpio\n");

	data->vcom_ctrl_gpio = devm_gpiod_get_optional(&client->dev, "vcom-ctrl", GPIOD_OUT_LOW);
	if (IS_ERR(data->vcom_ctrl_gpio))
	return dev_err_probe(&client->dev,
	PTR_ERR(data->vcom_ctrl_gpio),
	"failed to get vcm ctrl gpio\n");

	ret = devm_regulator_get_enable(&client->dev, "vin");
	if (ret)
	return dev_err_probe(&client->dev, ret,
	"failed to get vin regulator\n");

	data->dev = &client->dev;
	i2c_set_clientdata(client, data);

	init_completion(&data->pgood_completion);
	init_completion(&data->tmst_completion);

	ret = devm_request_threaded_irq(&client->dev, data->pgood_irq, NULL,
	pgood_handler,
	IRQF_TRIGGER_RISING \| IRQF_ONESHOT,
	"PGOOD", data);
	if (ret)
	return dev_err_probe(&client->dev, ret,
	"failed to request power good irq\n");

	if (client->irq) {
	ret = devm_request_threaded_irq(&client->dev, client->irq,
	NULL, tps65185_irq_thread,
	IRQF_TRIGGER_LOW \| IRQF_ONESHOT,
	"tps65185", data);
	if (ret)
	return dev_err_probe(&client->dev, ret,
	"failed to request irq\n");
	}

	ret = regmap_update_bits(data->regmap, TPS65185_REG_INT_EN2, BIT(0), BIT(0));
	if (ret)
	return dev_err_probe(&client->dev, ret,
	"failed to enable temp irq\n");

	config.driver_data = data;
	config.dev = &client->dev;
	config.regmap = data->regmap;

	for (i = 0; i < ARRAY_SIZE(regulators); i++) {
	rdev = devm_regulator_register(&client->dev, &regulators[i],
	&config);
	if (IS_ERR(rdev))
	return dev_err_probe(&client->dev, PTR_ERR(rdev),
	"failed to register %s regulator\n",
	regulators[i].name);
	}

	config.ena_gpiod = data->vcom_ctrl_gpio;
	rdev = devm_regulator_register(&client->dev, &vcom_regulator_desc, &config);
	if (IS_ERR(rdev))
	return dev_err_probe(&client->dev, PTR_ERR(rdev),
	"failed to register vcom regulator\n");

	if (IS_REACHABLE(CONFIG_HWMON)) {
	struct device *hwmon_dev;

	hwmon_dev = devm_hwmon_device_register_with_info(&client->dev, "tps65185", data,
	&tps65185_chip_info, NULL);
	if (IS_ERR(hwmon_dev))
	dev_notice(&client->dev, "failed to register hwmon\n");
	}

	return 0;
	}

	static const struct of_device_id tps65185_dt_ids[] = {
	{
	.compatible = "ti,tps65185",
	}, {
	/* sentinel */
	}
	};
	MODULE_DEVICE_TABLE(of, tps65185_dt_ids);

	static struct i2c_driver tps65185_i2c_driver = {
	.driver = {
	.name = "tps65185",
	.of_match_table = tps65185_dt_ids,
	},
	.probe = tps65185_probe,
	};

	module_i2c_driver(tps65185_i2c_driver);

	/* Module information */
	MODULE_DESCRIPTION("TPS65185 regulator driver");
	MODULE_LICENSE("GPL");