drivers/regulator/tps65219-regulator.c - linux/kernel/git/torvalds/linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0
 //
 // tps65219-regulator.c
 //
 // Regulator driver for TPS65219 PMIC
 //
 // Copyright (C) 2022 BayLibre Incorporated - https://www.baylibre.com/
 //
 // This implementation derived from tps65218 authored by
 // "J Keerthy <j-keerthy@ti.com>"
 //

 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/device.h>
 #include <linux/init.h>
 #include <linux/err.h>
 #include <linux/platform_device.h>
 #include <linux/of_device.h>
 #include <linux/regmap.h>
 #include <linux/regulator/of_regulator.h>
 #include <linux/regulator/driver.h>
 #include <linux/regulator/machine.h>
 #include <linux/mfd/tps65219.h>

 struct tps65219_regulator_irq_type {
 	const char *irq_name;
 	const char *regulator_name;
 	const char *event_name;
 	unsigned long event;
 };

 static struct tps65219_regulator_irq_type tps65219_regulator_irq_types[] = {
 	{ "LDO3_SCG", "LDO3", "short circuit to ground", REGULATOR_EVENT_REGULATION_OUT },
 	{ "LDO3_OC", "LDO3", "overcurrent", REGULATOR_EVENT_OVER_CURRENT },
 	{ "LDO3_UV", "LDO3", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
 	{ "LDO4_SCG", "LDO4", "short circuit to ground", REGULATOR_EVENT_REGULATION_OUT },
 	{ "LDO4_OC", "LDO4", "overcurrent", REGULATOR_EVENT_OVER_CURRENT },
 	{ "LDO4_UV", "LDO4", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
 	{ "LDO1_SCG", "LDO1", "short circuit to ground", REGULATOR_EVENT_REGULATION_OUT },
 	{ "LDO1_OC", "LDO1", "overcurrent", REGULATOR_EVENT_OVER_CURRENT },
 	{ "LDO1_UV", "LDO1", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
 	{ "LDO2_SCG", "LDO2", "short circuit to ground", REGULATOR_EVENT_REGULATION_OUT },
 	{ "LDO2_OC", "LDO2", "overcurrent", REGULATOR_EVENT_OVER_CURRENT },
 	{ "LDO2_UV", "LDO2", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
 	{ "BUCK3_SCG", "BUCK3", "short circuit to ground", REGULATOR_EVENT_REGULATION_OUT },
 	{ "BUCK3_OC", "BUCK3", "overcurrent", REGULATOR_EVENT_OVER_CURRENT },
 	{ "BUCK3_NEG_OC", "BUCK3", "negative overcurrent", REGULATOR_EVENT_OVER_CURRENT },
 	{ "BUCK3_UV", "BUCK3", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
 	{ "BUCK1_SCG", "BUCK1", "short circuit to ground", REGULATOR_EVENT_REGULATION_OUT },
 	{ "BUCK1_OC", "BUCK1", "overcurrent", REGULATOR_EVENT_OVER_CURRENT },
 	{ "BUCK1_NEG_OC", "BUCK1", "negative overcurrent", REGULATOR_EVENT_OVER_CURRENT },
 	{ "BUCK1_UV", "BUCK1", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
 	{ "BUCK2_SCG", "BUCK2", "short circuit to ground", REGULATOR_EVENT_REGULATION_OUT },
 	{ "BUCK2_OC", "BUCK2", "overcurrent", REGULATOR_EVENT_OVER_CURRENT },
 	{ "BUCK2_NEG_OC", "BUCK2", "negative overcurrent", REGULATOR_EVENT_OVER_CURRENT },
 	{ "BUCK2_UV", "BUCK2", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
 	{ "BUCK1_RV", "BUCK1", "residual voltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
 	{ "BUCK2_RV", "BUCK2", "residual voltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
 	{ "BUCK3_RV", "BUCK3", "residual voltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
 	{ "LDO1_RV", "LDO1", "residual voltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
 	{ "LDO2_RV", "LDO2", "residual voltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
 	{ "LDO3_RV", "LDO3", "residual voltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
 	{ "LDO4_RV", "LDO4", "residual voltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
 	{ "BUCK1_RV_SD", "BUCK1", "residual voltage on shutdown",
 	 REGULATOR_EVENT_OVER_VOLTAGE_WARN },
 	{ "BUCK2_RV_SD", "BUCK2", "residual voltage on shutdown",
 	 REGULATOR_EVENT_OVER_VOLTAGE_WARN },
 	{ "BUCK3_RV_SD", "BUCK3", "residual voltage on shutdown",
 	 REGULATOR_EVENT_OVER_VOLTAGE_WARN },
 	{ "LDO1_RV_SD", "LDO1", "residual voltage on shutdown", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
 	{ "LDO2_RV_SD", "LDO2", "residual voltage on shutdown", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
 	{ "LDO3_RV_SD", "LDO3", "residual voltage on shutdown", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
 	{ "LDO4_RV_SD", "LDO4", "residual voltage on shutdown", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
 	{ "SENSOR_3_WARM", "SENSOR3", "warm temperature", REGULATOR_EVENT_OVER_TEMP_WARN},
 	{ "SENSOR_2_WARM", "SENSOR2", "warm temperature", REGULATOR_EVENT_OVER_TEMP_WARN },
 	{ "SENSOR_1_WARM", "SENSOR1", "warm temperature", REGULATOR_EVENT_OVER_TEMP_WARN },
 	{ "SENSOR_0_WARM", "SENSOR0", "warm temperature", REGULATOR_EVENT_OVER_TEMP_WARN },
 	{ "SENSOR_3_HOT", "SENSOR3", "hot temperature", REGULATOR_EVENT_OVER_TEMP},
 	{ "SENSOR_2_HOT", "SENSOR2", "hot temperature", REGULATOR_EVENT_OVER_TEMP },
 	{ "SENSOR_1_HOT", "SENSOR1", "hot temperature", REGULATOR_EVENT_OVER_TEMP },
 	{ "SENSOR_0_HOT", "SENSOR0", "hot temperature", REGULATOR_EVENT_OVER_TEMP },
 	{ "TIMEOUT", "", "", REGULATOR_EVENT_ABORT_VOLTAGE_CHANGE },
 };

 struct tps65219_regulator_irq_data {
 	struct device *dev;
 	struct tps65219_regulator_irq_type *type;
 	struct regulator_dev *rdev;
 };

 #define TPS65219_REGULATOR(_name, _of, _id, _type, _ops, _n, _vr, _vm, _er, \
 			   _em, _cr, _cm, _lr, _nlr, _delay, _fuv, \
 			   _ct, _ncl, _bpm) \
 	{								\
 		.name			= _name,			\
 		.of_match		= _of,				\
 		.regulators_node	= of_match_ptr("regulators"),	\
 		.supply_name		= _of,				\
 		.id			= _id,				\
 		.ops			= &(_ops),			\
 		.n_voltages		= _n,				\
 		.type			= _type,			\
 		.owner			= THIS_MODULE,			\
 		.vsel_reg		= _vr,				\
 		.vsel_mask		= _vm,				\
 		.csel_reg		= _cr,				\
 		.csel_mask		= _cm,				\
 		.curr_table		= _ct,				\
 		.n_current_limits	= _ncl,				\
 		.enable_reg		= _er,				\
 		.enable_mask		= _em,				\
 		.volt_table		= NULL,				\
 		.linear_ranges		= _lr,				\
 		.n_linear_ranges	= _nlr,				\
 		.ramp_delay		= _delay,			\
 		.fixed_uV		= _fuv,				\
 		.bypass_reg		= _vr,				\
 		.bypass_mask		= _bpm,				\
 	}								\

 static const struct linear_range bucks_ranges[] = {
 	REGULATOR_LINEAR_RANGE(600000, 0x0, 0x1f, 25000),
 	REGULATOR_LINEAR_RANGE(1400000, 0x20, 0x33, 100000),
 	REGULATOR_LINEAR_RANGE(3400000, 0x34, 0x3f, 0),
 };

 static const struct linear_range ldos_1_2_ranges[] = {
 	REGULATOR_LINEAR_RANGE(600000, 0x0, 0x37, 50000),
 	REGULATOR_LINEAR_RANGE(3400000, 0x38, 0x3f, 0),
 };

 static const struct linear_range ldos_3_4_ranges[] = {
 	REGULATOR_LINEAR_RANGE(1200000, 0x0, 0xC, 0),
 	REGULATOR_LINEAR_RANGE(1250000, 0xD, 0x35, 50000),
 	REGULATOR_LINEAR_RANGE(3300000, 0x36, 0x3F, 0),
 };

 static int tps65219_set_mode(struct regulator_dev *dev, unsigned int mode)
 {
 	struct tps65219 *tps = rdev_get_drvdata(dev);

 	switch (mode) {
 	case REGULATOR_MODE_NORMAL:
 		return regmap_set_bits(tps->regmap, TPS65219_REG_STBY_1_CONFIG,
 				       dev->desc->enable_mask);

 	case REGULATOR_MODE_STANDBY:
 		return regmap_clear_bits(tps->regmap,
 					 TPS65219_REG_STBY_1_CONFIG,
 					 dev->desc->enable_mask);
 	default:
 		return -EINVAL;
 	}
 }

 static unsigned int tps65219_get_mode(struct regulator_dev *dev)
 {
 	struct tps65219 *tps = rdev_get_drvdata(dev);
 	unsigned int rid = rdev_get_id(dev);
 	int ret, value = 0;

 	ret = regmap_read(tps->regmap, TPS65219_REG_STBY_1_CONFIG, &value);
 	if (ret) {
 		dev_dbg(tps->dev, "%s failed for regulator %s: %d ",
 			__func__, dev->desc->name, ret);
 		return ret;
 	}
 	value = (value & BIT(rid)) >> rid;
 	if (value)
 		return REGULATOR_MODE_STANDBY;
 	else
 		return REGULATOR_MODE_NORMAL;
 }

 /*
  * generic regulator_set_bypass_regmap does not fully match requirements
  * TPS65219 Requires explicitly that regulator is disabled before switch
  */
 static int tps65219_set_bypass(struct regulator_dev *dev, bool enable)
 {
 	struct tps65219 *tps = rdev_get_drvdata(dev);
 	unsigned int rid = rdev_get_id(dev);

 	if (dev->desc->ops->is_enabled(dev)) {
 		dev_err(tps->dev,
 			"%s LDO%d enabled, must be shut down to set bypass ",
 			__func__, rid);
 		return -EBUSY;
 	}
 	return regulator_set_bypass_regmap(dev, enable);
 }

 /* Operations permitted on BUCK1/2/3 */
 static const struct regulator_ops tps65219_bucks_ops = {
 	.is_enabled		= regulator_is_enabled_regmap,
 	.enable			= regulator_enable_regmap,
 	.disable		= regulator_disable_regmap,
 	.set_mode		= tps65219_set_mode,
 	.get_mode		= tps65219_get_mode,
 	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
 	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
 	.list_voltage		= regulator_list_voltage_linear_range,
 	.map_voltage		= regulator_map_voltage_linear_range,
 	.set_voltage_time_sel	= regulator_set_voltage_time_sel,

 };

 /* Operations permitted on LDO1/2 */
 static const struct regulator_ops tps65219_ldos_1_2_ops = {
 	.is_enabled		= regulator_is_enabled_regmap,
 	.enable			= regulator_enable_regmap,
 	.disable		= regulator_disable_regmap,
 	.set_mode		= tps65219_set_mode,
 	.get_mode		= tps65219_get_mode,
 	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
 	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
 	.list_voltage		= regulator_list_voltage_linear_range,
 	.map_voltage		= regulator_map_voltage_linear_range,
 	.set_bypass		= tps65219_set_bypass,
 	.get_bypass		= regulator_get_bypass_regmap,
 };

 /* Operations permitted on LDO3/4 */
 static const struct regulator_ops tps65219_ldos_3_4_ops = {
 	.is_enabled		= regulator_is_enabled_regmap,
 	.enable			= regulator_enable_regmap,
 	.disable		= regulator_disable_regmap,
 	.set_mode		= tps65219_set_mode,
 	.get_mode		= tps65219_get_mode,
 	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
 	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
 	.list_voltage		= regulator_list_voltage_linear_range,
 	.map_voltage		= regulator_map_voltage_linear_range,
 };

 static const struct regulator_desc regulators[] = {
 	TPS65219_REGULATOR("BUCK1", "buck1", TPS65219_BUCK_1,
 			   REGULATOR_VOLTAGE, tps65219_bucks_ops, 64,
 			   TPS65219_REG_BUCK1_VOUT,
 			   TPS65219_BUCKS_LDOS_VOUT_VSET_MASK,
 			   TPS65219_REG_ENABLE_CTRL,
 			   TPS65219_ENABLE_BUCK1_EN_MASK, 0, 0, bucks_ranges,
 			   3, 4000, 0, NULL, 0, 0),
 	TPS65219_REGULATOR("BUCK2", "buck2", TPS65219_BUCK_2,
 			   REGULATOR_VOLTAGE, tps65219_bucks_ops, 64,
 			   TPS65219_REG_BUCK2_VOUT,
 			   TPS65219_BUCKS_LDOS_VOUT_VSET_MASK,
 			   TPS65219_REG_ENABLE_CTRL,
 			   TPS65219_ENABLE_BUCK2_EN_MASK, 0, 0, bucks_ranges,
 			   3, 4000, 0, NULL, 0, 0),
 	TPS65219_REGULATOR("BUCK3", "buck3", TPS65219_BUCK_3,
 			   REGULATOR_VOLTAGE, tps65219_bucks_ops, 64,
 			   TPS65219_REG_BUCK3_VOUT,
 			   TPS65219_BUCKS_LDOS_VOUT_VSET_MASK,
 			   TPS65219_REG_ENABLE_CTRL,
 			   TPS65219_ENABLE_BUCK3_EN_MASK, 0, 0, bucks_ranges,
 			   3, 0, 0, NULL, 0, 0),
 	TPS65219_REGULATOR("LDO1", "ldo1", TPS65219_LDO_1,
 			   REGULATOR_VOLTAGE, tps65219_ldos_1_2_ops, 64,
 			   TPS65219_REG_LDO1_VOUT,
 			   TPS65219_BUCKS_LDOS_VOUT_VSET_MASK,
 			   TPS65219_REG_ENABLE_CTRL,
 			   TPS65219_ENABLE_LDO1_EN_MASK, 0, 0, ldos_1_2_ranges,
 			   2, 0, 0, NULL, 0, TPS65219_LDOS_BYP_CONFIG_MASK),
 	TPS65219_REGULATOR("LDO2", "ldo2", TPS65219_LDO_2,
 			   REGULATOR_VOLTAGE, tps65219_ldos_1_2_ops, 64,
 			   TPS65219_REG_LDO2_VOUT,
 			   TPS65219_BUCKS_LDOS_VOUT_VSET_MASK,
 			   TPS65219_REG_ENABLE_CTRL,
 			   TPS65219_ENABLE_LDO2_EN_MASK, 0, 0, ldos_1_2_ranges,
 			   2, 0, 0, NULL, 0, TPS65219_LDOS_BYP_CONFIG_MASK),
 	TPS65219_REGULATOR("LDO3", "ldo3", TPS65219_LDO_3,
 			   REGULATOR_VOLTAGE, tps65219_ldos_3_4_ops, 64,
 			   TPS65219_REG_LDO3_VOUT,
 			   TPS65219_BUCKS_LDOS_VOUT_VSET_MASK,
 			   TPS65219_REG_ENABLE_CTRL,
 			   TPS65219_ENABLE_LDO3_EN_MASK, 0, 0, ldos_3_4_ranges,
 			   3, 0, 0, NULL, 0, 0),
 	TPS65219_REGULATOR("LDO4", "ldo4", TPS65219_LDO_4,
 			   REGULATOR_VOLTAGE, tps65219_ldos_3_4_ops, 64,
 			   TPS65219_REG_LDO4_VOUT,
 			   TPS65219_BUCKS_LDOS_VOUT_VSET_MASK,
 			   TPS65219_REG_ENABLE_CTRL,
 			   TPS65219_ENABLE_LDO4_EN_MASK, 0, 0, ldos_3_4_ranges,
 			   3, 0, 0, NULL, 0, 0),
 };

 static irqreturn_t tps65219_regulator_irq_handler(int irq, void *data)
 {
 	struct tps65219_regulator_irq_data *irq_data = data;

 	if (irq_data->type->event_name[0] == '\0') {
 		/* This is the timeout interrupt no specific regulator */
 		dev_err(irq_data->dev,
 			"System was put in shutdown due to timeout during an active or standby transition.\n");
 		return IRQ_HANDLED;
 	}

 	regulator_notifier_call_chain(irq_data->rdev,
 				      irq_data->type->event, NULL);

 	dev_err(irq_data->dev, "Error IRQ trap %s for %s\n",
 		irq_data->type->event_name, irq_data->type->regulator_name);
 	return IRQ_HANDLED;
 }

 static int tps65219_get_rdev_by_name(const char *regulator_name,
 				     struct regulator_dev *rdevtbl[7],
 				     struct regulator_dev *dev)
 {
 	int i;

 	for (i = 0; i < ARRAY_SIZE(regulators); i++) {
 		if (strcmp(regulator_name, regulators[i].name) == 0) {
 			dev = rdevtbl[i];
 			return 0;
 		}
 	}
 	return -EINVAL;
 }

 static int tps65219_regulator_probe(struct platform_device *pdev)
 {
 	struct tps65219 *tps = dev_get_drvdata(pdev->dev.parent);
 	struct regulator_dev *rdev;
 	struct regulator_config config = { };
 	int i;
 	int error;
 	int irq;
 	struct tps65219_regulator_irq_data *irq_data;
 	struct tps65219_regulator_irq_type *irq_type;
 	struct regulator_dev *rdevtbl[7];

 	config.dev = tps->dev;
 	config.driver_data = tps;
 	config.regmap = tps->regmap;

 	for (i = 0; i < ARRAY_SIZE(regulators); i++) {
 		dev_dbg(tps->dev, "%s regul i= %d START", __func__, i);
 		rdev = devm_regulator_register(&pdev->dev, &regulators[i],
 					       &config);
 		if (IS_ERR(rdev)) {
 			dev_err(tps->dev, "failed to register %s regulator\n",
 				pdev->name);
 			return PTR_ERR(rdev);
 		}
 		rdevtbl[i] = rdev;
 		dev_dbg(tps->dev, "%s regul i= %d COMPLETED", __func__, i);
 	}

 	irq_data = devm_kmalloc(tps->dev,
 				ARRAY_SIZE(tps65219_regulator_irq_types) *
 				sizeof(struct tps65219_regulator_irq_data),
 				GFP_KERNEL);
 	if (!irq_data)
 		return -ENOMEM;

 	for (i = 0; i < ARRAY_SIZE(tps65219_regulator_irq_types); ++i) {
 		irq_type = &tps65219_regulator_irq_types[i];

 		irq = platform_get_irq_byname(pdev, irq_type->irq_name);
 		if (irq < 0)
 			return -EINVAL;

 		irq_data[i].dev = tps->dev;
 		irq_data[i].type = irq_type;

 		tps65219_get_rdev_by_name(irq_type->regulator_name, rdevtbl, rdev);
 		if (rdev < 0) {
 			dev_err(tps->dev, "Failed to get rdev for %s\n",
 				irq_type->regulator_name);
 			return -EINVAL;
 		}
 		irq_data[i].rdev = rdev;

 		error = devm_request_threaded_irq(tps->dev, irq, NULL,
 						  tps65219_regulator_irq_handler,
 						  IRQF_ONESHOT,
 						  irq_type->irq_name,
 						  &irq_data[i]);
 		if (error) {
 			dev_err(tps->dev, "failed to request %s IRQ %d: %d\n",
 				irq_type->irq_name, irq, error);
 			return error;
 		}
 	}

 	return 0;
 }

 static const struct platform_device_id tps65219_regulator_id_table[] = {
 	{ "tps65219-regulator", },
 	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(platform, tps65219_regulator_id_table);

 static struct platform_driver tps65219_regulator_driver = {
 	.driver = {
 		.name = "tps65219-pmic",
 	},
 	.probe = tps65219_regulator_probe,
 	.id_table = tps65219_regulator_id_table,
 };

 module_platform_driver(tps65219_regulator_driver);

 MODULE_AUTHOR("Jerome Neanne <j-neanne@baylibre.com>");
 MODULE_DESCRIPTION("TPS65219 voltage regulator driver");
 MODULE_ALIAS("platform:tps65219-pmic");
 MODULE_LICENSE("GPL");
	// SPDX-License-Identifier: GPL-2.0
	//
	// tps65219-regulator.c
	//
	// Regulator driver for TPS65219 PMIC
	//
	// Copyright (C) 2022 BayLibre Incorporated - https://www.baylibre.com/
	//
	// This implementation derived from tps65218 authored by
	// "J Keerthy <j-keerthy@ti.com>"
	//

	#include <linux/kernel.h>
	#include <linux/module.h>
	#include <linux/device.h>
	#include <linux/init.h>
	#include <linux/err.h>
	#include <linux/platform_device.h>
	#include <linux/of_device.h>
	#include <linux/regmap.h>
	#include <linux/regulator/of_regulator.h>
	#include <linux/regulator/driver.h>
	#include <linux/regulator/machine.h>
	#include <linux/mfd/tps65219.h>

	struct tps65219_regulator_irq_type {
	const char *irq_name;
	const char *regulator_name;
	const char *event_name;
	unsigned long event;
	};

	static struct tps65219_regulator_irq_type tps65219_regulator_irq_types[] = {
	{ "LDO3_SCG", "LDO3", "short circuit to ground", REGULATOR_EVENT_REGULATION_OUT },
	{ "LDO3_OC", "LDO3", "overcurrent", REGULATOR_EVENT_OVER_CURRENT },
	{ "LDO3_UV", "LDO3", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
	{ "LDO4_SCG", "LDO4", "short circuit to ground", REGULATOR_EVENT_REGULATION_OUT },
	{ "LDO4_OC", "LDO4", "overcurrent", REGULATOR_EVENT_OVER_CURRENT },
	{ "LDO4_UV", "LDO4", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
	{ "LDO1_SCG", "LDO1", "short circuit to ground", REGULATOR_EVENT_REGULATION_OUT },
	{ "LDO1_OC", "LDO1", "overcurrent", REGULATOR_EVENT_OVER_CURRENT },
	{ "LDO1_UV", "LDO1", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
	{ "LDO2_SCG", "LDO2", "short circuit to ground", REGULATOR_EVENT_REGULATION_OUT },
	{ "LDO2_OC", "LDO2", "overcurrent", REGULATOR_EVENT_OVER_CURRENT },
	{ "LDO2_UV", "LDO2", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
	{ "BUCK3_SCG", "BUCK3", "short circuit to ground", REGULATOR_EVENT_REGULATION_OUT },
	{ "BUCK3_OC", "BUCK3", "overcurrent", REGULATOR_EVENT_OVER_CURRENT },
	{ "BUCK3_NEG_OC", "BUCK3", "negative overcurrent", REGULATOR_EVENT_OVER_CURRENT },
	{ "BUCK3_UV", "BUCK3", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
	{ "BUCK1_SCG", "BUCK1", "short circuit to ground", REGULATOR_EVENT_REGULATION_OUT },
	{ "BUCK1_OC", "BUCK1", "overcurrent", REGULATOR_EVENT_OVER_CURRENT },
	{ "BUCK1_NEG_OC", "BUCK1", "negative overcurrent", REGULATOR_EVENT_OVER_CURRENT },
	{ "BUCK1_UV", "BUCK1", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
	{ "BUCK2_SCG", "BUCK2", "short circuit to ground", REGULATOR_EVENT_REGULATION_OUT },
	{ "BUCK2_OC", "BUCK2", "overcurrent", REGULATOR_EVENT_OVER_CURRENT },
	{ "BUCK2_NEG_OC", "BUCK2", "negative overcurrent", REGULATOR_EVENT_OVER_CURRENT },
	{ "BUCK2_UV", "BUCK2", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
	{ "BUCK1_RV", "BUCK1", "residual voltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
	{ "BUCK2_RV", "BUCK2", "residual voltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
	{ "BUCK3_RV", "BUCK3", "residual voltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
	{ "LDO1_RV", "LDO1", "residual voltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
	{ "LDO2_RV", "LDO2", "residual voltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
	{ "LDO3_RV", "LDO3", "residual voltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
	{ "LDO4_RV", "LDO4", "residual voltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
	{ "BUCK1_RV_SD", "BUCK1", "residual voltage on shutdown",
	REGULATOR_EVENT_OVER_VOLTAGE_WARN },
	{ "BUCK2_RV_SD", "BUCK2", "residual voltage on shutdown",
	REGULATOR_EVENT_OVER_VOLTAGE_WARN },
	{ "BUCK3_RV_SD", "BUCK3", "residual voltage on shutdown",
	REGULATOR_EVENT_OVER_VOLTAGE_WARN },
	{ "LDO1_RV_SD", "LDO1", "residual voltage on shutdown", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
	{ "LDO2_RV_SD", "LDO2", "residual voltage on shutdown", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
	{ "LDO3_RV_SD", "LDO3", "residual voltage on shutdown", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
	{ "LDO4_RV_SD", "LDO4", "residual voltage on shutdown", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
	{ "SENSOR_3_WARM", "SENSOR3", "warm temperature", REGULATOR_EVENT_OVER_TEMP_WARN},
	{ "SENSOR_2_WARM", "SENSOR2", "warm temperature", REGULATOR_EVENT_OVER_TEMP_WARN },
	{ "SENSOR_1_WARM", "SENSOR1", "warm temperature", REGULATOR_EVENT_OVER_TEMP_WARN },
	{ "SENSOR_0_WARM", "SENSOR0", "warm temperature", REGULATOR_EVENT_OVER_TEMP_WARN },
	{ "SENSOR_3_HOT", "SENSOR3", "hot temperature", REGULATOR_EVENT_OVER_TEMP},
	{ "SENSOR_2_HOT", "SENSOR2", "hot temperature", REGULATOR_EVENT_OVER_TEMP },
	{ "SENSOR_1_HOT", "SENSOR1", "hot temperature", REGULATOR_EVENT_OVER_TEMP },
	{ "SENSOR_0_HOT", "SENSOR0", "hot temperature", REGULATOR_EVENT_OVER_TEMP },
	{ "TIMEOUT", "", "", REGULATOR_EVENT_ABORT_VOLTAGE_CHANGE },
	};

	struct tps65219_regulator_irq_data {
	struct device *dev;
	struct tps65219_regulator_irq_type *type;
	struct regulator_dev *rdev;
	};

	#define TPS65219_REGULATOR(_name, _of, _id, _type, _ops, _n, _vr, _vm, _er, \
	_em, _cr, _cm, _lr, _nlr, _delay, _fuv, \
	_ct, _ncl, _bpm) \
	{ \
	.name = _name, \
	.of_match = _of, \
	.regulators_node = of_match_ptr("regulators"), \
	.supply_name = _of, \
	.id = _id, \
	.ops = &(_ops), \
	.n_voltages = _n, \
	.type = _type, \
	.owner = THIS_MODULE, \
	.vsel_reg = _vr, \
	.vsel_mask = _vm, \
	.csel_reg = _cr, \
	.csel_mask = _cm, \
	.curr_table = _ct, \
	.n_current_limits = _ncl, \
	.enable_reg = _er, \
	.enable_mask = _em, \
	.volt_table = NULL, \
	.linear_ranges = _lr, \
	.n_linear_ranges = _nlr, \
	.ramp_delay = _delay, \
	.fixed_uV = _fuv, \
	.bypass_reg = _vr, \
	.bypass_mask = _bpm, \
	} \

	static const struct linear_range bucks_ranges[] = {
	REGULATOR_LINEAR_RANGE(600000, 0x0, 0x1f, 25000),
	REGULATOR_LINEAR_RANGE(1400000, 0x20, 0x33, 100000),
	REGULATOR_LINEAR_RANGE(3400000, 0x34, 0x3f, 0),
	};

	static const struct linear_range ldos_1_2_ranges[] = {
	REGULATOR_LINEAR_RANGE(600000, 0x0, 0x37, 50000),
	REGULATOR_LINEAR_RANGE(3400000, 0x38, 0x3f, 0),
	};

	static const struct linear_range ldos_3_4_ranges[] = {
	REGULATOR_LINEAR_RANGE(1200000, 0x0, 0xC, 0),
	REGULATOR_LINEAR_RANGE(1250000, 0xD, 0x35, 50000),
	REGULATOR_LINEAR_RANGE(3300000, 0x36, 0x3F, 0),
	};

	static int tps65219_set_mode(struct regulator_dev *dev, unsigned int mode)
	{
	struct tps65219 *tps = rdev_get_drvdata(dev);

	switch (mode) {
	case REGULATOR_MODE_NORMAL:
	return regmap_set_bits(tps->regmap, TPS65219_REG_STBY_1_CONFIG,
	dev->desc->enable_mask);

	case REGULATOR_MODE_STANDBY:
	return regmap_clear_bits(tps->regmap,
	TPS65219_REG_STBY_1_CONFIG,
	dev->desc->enable_mask);
	default:
	return -EINVAL;
	}
	}

	static unsigned int tps65219_get_mode(struct regulator_dev *dev)
	{
	struct tps65219 *tps = rdev_get_drvdata(dev);
	unsigned int rid = rdev_get_id(dev);
	int ret, value = 0;

	ret = regmap_read(tps->regmap, TPS65219_REG_STBY_1_CONFIG, &value);
	if (ret) {
	dev_dbg(tps->dev, "%s failed for regulator %s: %d ",
	__func__, dev->desc->name, ret);
	return ret;
	}
	value = (value & BIT(rid)) >> rid;
	if (value)
	return REGULATOR_MODE_STANDBY;
	else
	return REGULATOR_MODE_NORMAL;
	}

	/*
	* generic regulator_set_bypass_regmap does not fully match requirements
	* TPS65219 Requires explicitly that regulator is disabled before switch
	*/
	static int tps65219_set_bypass(struct regulator_dev *dev, bool enable)
	{
	struct tps65219 *tps = rdev_get_drvdata(dev);
	unsigned int rid = rdev_get_id(dev);

	if (dev->desc->ops->is_enabled(dev)) {
	dev_err(tps->dev,
	"%s LDO%d enabled, must be shut down to set bypass ",
	__func__, rid);
	return -EBUSY;
	}
	return regulator_set_bypass_regmap(dev, enable);
	}

	/* Operations permitted on BUCK1/2/3 */
	static const struct regulator_ops tps65219_bucks_ops = {
	.is_enabled = regulator_is_enabled_regmap,
	.enable = regulator_enable_regmap,
	.disable = regulator_disable_regmap,
	.set_mode = tps65219_set_mode,
	.get_mode = tps65219_get_mode,
	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	.set_voltage_sel = regulator_set_voltage_sel_regmap,
	.list_voltage = regulator_list_voltage_linear_range,
	.map_voltage = regulator_map_voltage_linear_range,
	.set_voltage_time_sel = regulator_set_voltage_time_sel,

	};

	/* Operations permitted on LDO1/2 */
	static const struct regulator_ops tps65219_ldos_1_2_ops = {
	.is_enabled = regulator_is_enabled_regmap,
	.enable = regulator_enable_regmap,
	.disable = regulator_disable_regmap,
	.set_mode = tps65219_set_mode,
	.get_mode = tps65219_get_mode,
	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	.set_voltage_sel = regulator_set_voltage_sel_regmap,
	.list_voltage = regulator_list_voltage_linear_range,
	.map_voltage = regulator_map_voltage_linear_range,
	.set_bypass = tps65219_set_bypass,
	.get_bypass = regulator_get_bypass_regmap,
	};

	/* Operations permitted on LDO3/4 */
	static const struct regulator_ops tps65219_ldos_3_4_ops = {
	.is_enabled = regulator_is_enabled_regmap,
	.enable = regulator_enable_regmap,
	.disable = regulator_disable_regmap,
	.set_mode = tps65219_set_mode,
	.get_mode = tps65219_get_mode,
	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	.set_voltage_sel = regulator_set_voltage_sel_regmap,
	.list_voltage = regulator_list_voltage_linear_range,
	.map_voltage = regulator_map_voltage_linear_range,
	};

	static const struct regulator_desc regulators[] = {
	TPS65219_REGULATOR("BUCK1", "buck1", TPS65219_BUCK_1,
	REGULATOR_VOLTAGE, tps65219_bucks_ops, 64,
	TPS65219_REG_BUCK1_VOUT,
	TPS65219_BUCKS_LDOS_VOUT_VSET_MASK,
	TPS65219_REG_ENABLE_CTRL,
	TPS65219_ENABLE_BUCK1_EN_MASK, 0, 0, bucks_ranges,
	3, 4000, 0, NULL, 0, 0),
	TPS65219_REGULATOR("BUCK2", "buck2", TPS65219_BUCK_2,
	REGULATOR_VOLTAGE, tps65219_bucks_ops, 64,
	TPS65219_REG_BUCK2_VOUT,
	TPS65219_BUCKS_LDOS_VOUT_VSET_MASK,
	TPS65219_REG_ENABLE_CTRL,
	TPS65219_ENABLE_BUCK2_EN_MASK, 0, 0, bucks_ranges,
	3, 4000, 0, NULL, 0, 0),
	TPS65219_REGULATOR("BUCK3", "buck3", TPS65219_BUCK_3,
	REGULATOR_VOLTAGE, tps65219_bucks_ops, 64,
	TPS65219_REG_BUCK3_VOUT,
	TPS65219_BUCKS_LDOS_VOUT_VSET_MASK,
	TPS65219_REG_ENABLE_CTRL,
	TPS65219_ENABLE_BUCK3_EN_MASK, 0, 0, bucks_ranges,
	3, 0, 0, NULL, 0, 0),
	TPS65219_REGULATOR("LDO1", "ldo1", TPS65219_LDO_1,
	REGULATOR_VOLTAGE, tps65219_ldos_1_2_ops, 64,
	TPS65219_REG_LDO1_VOUT,
	TPS65219_BUCKS_LDOS_VOUT_VSET_MASK,
	TPS65219_REG_ENABLE_CTRL,
	TPS65219_ENABLE_LDO1_EN_MASK, 0, 0, ldos_1_2_ranges,
	2, 0, 0, NULL, 0, TPS65219_LDOS_BYP_CONFIG_MASK),
	TPS65219_REGULATOR("LDO2", "ldo2", TPS65219_LDO_2,
	REGULATOR_VOLTAGE, tps65219_ldos_1_2_ops, 64,
	TPS65219_REG_LDO2_VOUT,
	TPS65219_BUCKS_LDOS_VOUT_VSET_MASK,
	TPS65219_REG_ENABLE_CTRL,
	TPS65219_ENABLE_LDO2_EN_MASK, 0, 0, ldos_1_2_ranges,
	2, 0, 0, NULL, 0, TPS65219_LDOS_BYP_CONFIG_MASK),
	TPS65219_REGULATOR("LDO3", "ldo3", TPS65219_LDO_3,
	REGULATOR_VOLTAGE, tps65219_ldos_3_4_ops, 64,
	TPS65219_REG_LDO3_VOUT,
	TPS65219_BUCKS_LDOS_VOUT_VSET_MASK,
	TPS65219_REG_ENABLE_CTRL,
	TPS65219_ENABLE_LDO3_EN_MASK, 0, 0, ldos_3_4_ranges,
	3, 0, 0, NULL, 0, 0),
	TPS65219_REGULATOR("LDO4", "ldo4", TPS65219_LDO_4,
	REGULATOR_VOLTAGE, tps65219_ldos_3_4_ops, 64,
	TPS65219_REG_LDO4_VOUT,
	TPS65219_BUCKS_LDOS_VOUT_VSET_MASK,
	TPS65219_REG_ENABLE_CTRL,
	TPS65219_ENABLE_LDO4_EN_MASK, 0, 0, ldos_3_4_ranges,
	3, 0, 0, NULL, 0, 0),
	};

	static irqreturn_t tps65219_regulator_irq_handler(int irq, void *data)
	{
	struct tps65219_regulator_irq_data *irq_data = data;

	if (irq_data->type->event_name[0] == '\0') {
	/* This is the timeout interrupt no specific regulator */
	dev_err(irq_data->dev,
	"System was put in shutdown due to timeout during an active or standby transition.\n");
	return IRQ_HANDLED;
	}

	regulator_notifier_call_chain(irq_data->rdev,
	irq_data->type->event, NULL);

	dev_err(irq_data->dev, "Error IRQ trap %s for %s\n",
	irq_data->type->event_name, irq_data->type->regulator_name);
	return IRQ_HANDLED;
	}

	static int tps65219_get_rdev_by_name(const char *regulator_name,
	struct regulator_dev *rdevtbl[7],
	struct regulator_dev *dev)
	{
	int i;

	for (i = 0; i < ARRAY_SIZE(regulators); i++) {
	if (strcmp(regulator_name, regulators[i].name) == 0) {
	dev = rdevtbl[i];
	return 0;
	}
	}
	return -EINVAL;
	}

	static int tps65219_regulator_probe(struct platform_device *pdev)
	{
	struct tps65219 *tps = dev_get_drvdata(pdev->dev.parent);
	struct regulator_dev *rdev;
	struct regulator_config config = { };
	int i;
	int error;
	int irq;
	struct tps65219_regulator_irq_data *irq_data;
	struct tps65219_regulator_irq_type *irq_type;
	struct regulator_dev *rdevtbl[7];

	config.dev = tps->dev;
	config.driver_data = tps;
	config.regmap = tps->regmap;

	for (i = 0; i < ARRAY_SIZE(regulators); i++) {
	dev_dbg(tps->dev, "%s regul i= %d START", __func__, i);
	rdev = devm_regulator_register(&pdev->dev, &regulators[i],
	&config);
	if (IS_ERR(rdev)) {
	dev_err(tps->dev, "failed to register %s regulator\n",
	pdev->name);
	return PTR_ERR(rdev);
	}
	rdevtbl[i] = rdev;
	dev_dbg(tps->dev, "%s regul i= %d COMPLETED", __func__, i);
	}

	irq_data = devm_kmalloc(tps->dev,
	ARRAY_SIZE(tps65219_regulator_irq_types) *
	sizeof(struct tps65219_regulator_irq_data),
	GFP_KERNEL);
	if (!irq_data)
	return -ENOMEM;

	for (i = 0; i < ARRAY_SIZE(tps65219_regulator_irq_types); ++i) {
	irq_type = &tps65219_regulator_irq_types[i];

	irq = platform_get_irq_byname(pdev, irq_type->irq_name);
	if (irq < 0)
	return -EINVAL;

	irq_data[i].dev = tps->dev;
	irq_data[i].type = irq_type;

	tps65219_get_rdev_by_name(irq_type->regulator_name, rdevtbl, rdev);
	if (rdev < 0) {
	dev_err(tps->dev, "Failed to get rdev for %s\n",
	irq_type->regulator_name);
	return -EINVAL;
	}
	irq_data[i].rdev = rdev;

	error = devm_request_threaded_irq(tps->dev, irq, NULL,
	tps65219_regulator_irq_handler,
	IRQF_ONESHOT,
	irq_type->irq_name,
	&irq_data[i]);
	if (error) {
	dev_err(tps->dev, "failed to request %s IRQ %d: %d\n",
	irq_type->irq_name, irq, error);
	return error;
	}
	}

	return 0;
	}

	static const struct platform_device_id tps65219_regulator_id_table[] = {
	{ "tps65219-regulator", },
	{ /* sentinel */ }
	};
	MODULE_DEVICE_TABLE(platform, tps65219_regulator_id_table);

	static struct platform_driver tps65219_regulator_driver = {
	.driver = {
	.name = "tps65219-pmic",
	},
	.probe = tps65219_regulator_probe,
	.id_table = tps65219_regulator_id_table,
	};

	module_platform_driver(tps65219_regulator_driver);

	MODULE_AUTHOR("Jerome Neanne <j-neanne@baylibre.com>");
	MODULE_DESCRIPTION("TPS65219 voltage regulator driver");
	MODULE_ALIAS("platform:tps65219-pmic");
	MODULE_LICENSE("GPL");