drivers/mfd/tps65219.c - linux/torvalds/linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0
 //
 // Driver for TPS65219 Integrated Power Management Integrated Chips (PMIC)
 //
 // Copyright (C) 2022 BayLibre Incorporated - https://www.baylibre.com/

 #include <linux/i2c.h>
 #include <linux/reboot.h>
 #include <linux/regmap.h>

 #include <linux/mfd/core.h>
 #include <linux/mfd/tps65219.h>

 static int tps65219_warm_reset(struct tps65219 *tps)
 {
 	return regmap_update_bits(tps->regmap, TPS65219_REG_MFP_CTRL,
 				  TPS65219_MFP_WARM_RESET_I2C_CTRL_MASK,
 				  TPS65219_MFP_WARM_RESET_I2C_CTRL_MASK);
 }

 static int tps65219_cold_reset(struct tps65219 *tps)
 {
 	return regmap_update_bits(tps->regmap, TPS65219_REG_MFP_CTRL,
 				  TPS65219_MFP_COLD_RESET_I2C_CTRL_MASK,
 				  TPS65219_MFP_COLD_RESET_I2C_CTRL_MASK);
 }

 static int tps65219_soft_shutdown(struct tps65219 *tps)
 {
 	return regmap_update_bits(tps->regmap, TPS65219_REG_MFP_CTRL,
 				  TPS65219_MFP_I2C_OFF_REQ_MASK,
 				  TPS65219_MFP_I2C_OFF_REQ_MASK);
 }

 static int tps65219_power_off_handler(struct sys_off_data *data)
 {
 	tps65219_soft_shutdown(data->cb_data);
 	return NOTIFY_DONE;
 }

 static int tps65219_restart(struct tps65219 *tps, unsigned long reboot_mode)
 {
 	if (reboot_mode == REBOOT_WARM)
 		tps65219_warm_reset(tps);
 	else
 		tps65219_cold_reset(tps);

 	return NOTIFY_DONE;
 }

 static int tps65219_restart_handler(struct sys_off_data *data)
 {
 	tps65219_restart(data->cb_data, data->mode);
 	return NOTIFY_DONE;
 }

 static const struct resource tps65219_pwrbutton_resources[] = {
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_PB_FALLING_EDGE_DETECT, "falling"),
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_PB_RISING_EDGE_DETECT, "rising"),
 };

 static const struct resource tps65219_regulator_resources[] = {
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO3_SCG, "LDO3_SCG"),
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO3_OC, "LDO3_OC"),
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO3_UV, "LDO3_UV"),
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO4_SCG, "LDO4_SCG"),
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO4_OC, "LDO4_OC"),
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO4_UV, "LDO4_UV"),
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO1_SCG, "LDO1_SCG"),
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO1_OC, "LDO1_OC"),
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO1_UV, "LDO1_UV"),
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO2_SCG, "LDO2_SCG"),
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO2_OC, "LDO2_OC"),
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO2_UV, "LDO2_UV"),
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK3_SCG, "BUCK3_SCG"),
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK3_OC, "BUCK3_OC"),
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK3_NEG_OC, "BUCK3_NEG_OC"),
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK3_UV, "BUCK3_UV"),
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK1_SCG, "BUCK1_SCG"),
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK1_OC, "BUCK1_OC"),
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK1_NEG_OC, "BUCK1_NEG_OC"),
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK1_UV, "BUCK1_UV"),
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK2_SCG, "BUCK2_SCG"),
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK2_OC, "BUCK2_OC"),
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK2_NEG_OC, "BUCK2_NEG_OC"),
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK2_UV, "BUCK2_UV"),
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK1_RV, "BUCK1_RV"),
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK2_RV, "BUCK2_RV"),
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK3_RV, "BUCK3_RV"),
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO1_RV, "LDO1_RV"),
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO2_RV, "LDO2_RV"),
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO3_RV, "LDO3_RV"),
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO4_RV, "LDO4_RV"),
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK1_RV_SD, "BUCK1_RV_SD"),
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK2_RV_SD, "BUCK2_RV_SD"),
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK3_RV_SD, "BUCK3_RV_SD"),
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO1_RV_SD, "LDO1_RV_SD"),
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO2_RV_SD, "LDO2_RV_SD"),
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO3_RV_SD, "LDO3_RV_SD"),
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO4_RV_SD, "LDO4_RV_SD"),
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_TIMEOUT, "TIMEOUT"),
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_SENSOR_3_WARM, "SENSOR_3_WARM"),
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_SENSOR_2_WARM, "SENSOR_2_WARM"),
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_SENSOR_1_WARM, "SENSOR_1_WARM"),
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_SENSOR_0_WARM, "SENSOR_0_WARM"),
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_SENSOR_3_HOT, "SENSOR_3_HOT"),
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_SENSOR_2_HOT, "SENSOR_2_HOT"),
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_SENSOR_1_HOT, "SENSOR_1_HOT"),
 	DEFINE_RES_IRQ_NAMED(TPS65219_INT_SENSOR_0_HOT, "SENSOR_0_HOT"),
 };

 static const struct mfd_cell tps65219_cells[] = {
 	{
 		.name = "tps65219-regulator",
 		.resources = tps65219_regulator_resources,
 		.num_resources = ARRAY_SIZE(tps65219_regulator_resources),
 	},
 	{ .name = "tps65219-gpio", },
 };

 static const struct mfd_cell tps65219_pwrbutton_cell = {
 	.name = "tps65219-pwrbutton",
 	.resources = tps65219_pwrbutton_resources,
 	.num_resources = ARRAY_SIZE(tps65219_pwrbutton_resources),
 };

 static const struct regmap_config tps65219_regmap_config = {
 	.reg_bits = 8,
 	.val_bits = 8,
 	.max_register = TPS65219_REG_FACTORY_CONFIG_2,
 };

 /*
  * Mapping of main IRQ register bits to sub-IRQ register offsets so that we can
  * access corect sub-IRQ registers based on bits that are set in main IRQ
  * register.
  */
 /* Timeout Residual Voltage Shutdown */
 static unsigned int bit0_offsets[] = { TPS65219_REG_INT_TO_RV_POS };
 static unsigned int bit1_offsets[] = { TPS65219_REG_INT_RV_POS };	/* Residual Voltage */
 static unsigned int bit2_offsets[] = { TPS65219_REG_INT_SYS_POS };	/* System */
 static unsigned int bit3_offsets[] = { TPS65219_REG_INT_BUCK_1_2_POS };	/* Buck 1-2 */
 static unsigned int bit4_offsets[] = { TPS65219_REG_INT_BUCK_3_POS };	/* Buck 3 */
 static unsigned int bit5_offsets[] = { TPS65219_REG_INT_LDO_1_2_POS };	/* LDO 1-2 */
 static unsigned int bit6_offsets[] = { TPS65219_REG_INT_LDO_3_4_POS };	/* LDO 3-4 */
 static unsigned int bit7_offsets[] = { TPS65219_REG_INT_PB_POS };	/* Power Button */

 static struct regmap_irq_sub_irq_map tps65219_sub_irq_offsets[] = {
 	REGMAP_IRQ_MAIN_REG_OFFSET(bit0_offsets),
 	REGMAP_IRQ_MAIN_REG_OFFSET(bit1_offsets),
 	REGMAP_IRQ_MAIN_REG_OFFSET(bit2_offsets),
 	REGMAP_IRQ_MAIN_REG_OFFSET(bit3_offsets),
 	REGMAP_IRQ_MAIN_REG_OFFSET(bit4_offsets),
 	REGMAP_IRQ_MAIN_REG_OFFSET(bit5_offsets),
 	REGMAP_IRQ_MAIN_REG_OFFSET(bit6_offsets),
 	REGMAP_IRQ_MAIN_REG_OFFSET(bit7_offsets),
 };

 #define TPS65219_REGMAP_IRQ_REG(int_name, register_position) \
 	REGMAP_IRQ_REG(int_name, register_position, int_name##_MASK)

 static struct regmap_irq tps65219_irqs[] = {
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO3_SCG, TPS65219_REG_INT_LDO_3_4_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO3_OC, TPS65219_REG_INT_LDO_3_4_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO3_UV, TPS65219_REG_INT_LDO_3_4_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO4_SCG, TPS65219_REG_INT_LDO_3_4_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO4_OC, TPS65219_REG_INT_LDO_3_4_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO4_UV, TPS65219_REG_INT_LDO_3_4_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO1_SCG, TPS65219_REG_INT_LDO_1_2_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO1_OC, TPS65219_REG_INT_LDO_1_2_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO1_UV, TPS65219_REG_INT_LDO_1_2_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO2_SCG, TPS65219_REG_INT_LDO_1_2_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO2_OC, TPS65219_REG_INT_LDO_1_2_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO2_UV, TPS65219_REG_INT_LDO_1_2_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK3_SCG, TPS65219_REG_INT_BUCK_3_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK3_OC, TPS65219_REG_INT_BUCK_3_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK3_NEG_OC, TPS65219_REG_INT_BUCK_3_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK3_UV, TPS65219_REG_INT_BUCK_3_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK2_SCG, TPS65219_REG_INT_BUCK_1_2_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK2_OC, TPS65219_REG_INT_BUCK_1_2_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK2_NEG_OC, TPS65219_REG_INT_BUCK_1_2_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK2_UV, TPS65219_REG_INT_BUCK_1_2_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK1_SCG, TPS65219_REG_INT_BUCK_1_2_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK1_OC, TPS65219_REG_INT_BUCK_1_2_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK1_NEG_OC, TPS65219_REG_INT_BUCK_1_2_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK1_UV, TPS65219_REG_INT_BUCK_1_2_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_SENSOR_3_WARM, TPS65219_REG_INT_SYS_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_SENSOR_2_WARM, TPS65219_REG_INT_SYS_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_SENSOR_1_WARM, TPS65219_REG_INT_SYS_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_SENSOR_0_WARM, TPS65219_REG_INT_SYS_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_SENSOR_3_HOT, TPS65219_REG_INT_SYS_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_SENSOR_2_HOT, TPS65219_REG_INT_SYS_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_SENSOR_1_HOT, TPS65219_REG_INT_SYS_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_SENSOR_0_HOT, TPS65219_REG_INT_SYS_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK1_RV, TPS65219_REG_INT_RV_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK2_RV, TPS65219_REG_INT_RV_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK3_RV, TPS65219_REG_INT_RV_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO1_RV, TPS65219_REG_INT_RV_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO2_RV, TPS65219_REG_INT_RV_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO3_RV, TPS65219_REG_INT_RV_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO4_RV, TPS65219_REG_INT_RV_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK1_RV_SD, TPS65219_REG_INT_TO_RV_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK2_RV_SD, TPS65219_REG_INT_TO_RV_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK3_RV_SD, TPS65219_REG_INT_TO_RV_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO1_RV_SD, TPS65219_REG_INT_TO_RV_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO2_RV_SD, TPS65219_REG_INT_TO_RV_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO3_RV_SD, TPS65219_REG_INT_TO_RV_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO4_RV_SD, TPS65219_REG_INT_TO_RV_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_TIMEOUT, TPS65219_REG_INT_TO_RV_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_PB_FALLING_EDGE_DETECT, TPS65219_REG_INT_PB_POS),
 	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_PB_RISING_EDGE_DETECT, TPS65219_REG_INT_PB_POS),
 };

 static struct regmap_irq_chip tps65219_irq_chip = {
 	.name = "tps65219_irq",
 	.main_status = TPS65219_REG_INT_SOURCE,
 	.num_main_regs = 1,
 	.num_main_status_bits = 8,
 	.irqs = tps65219_irqs,
 	.num_irqs = ARRAY_SIZE(tps65219_irqs),
 	.status_base = TPS65219_REG_INT_LDO_3_4,
 	.ack_base = TPS65219_REG_INT_LDO_3_4,
 	.clear_ack = 1,
 	.num_regs = 8,
 	.sub_reg_offsets = tps65219_sub_irq_offsets,
 };

 static int tps65219_probe(struct i2c_client *client)
 {
 	struct tps65219 *tps;
 	unsigned int chipid;
 	bool pwr_button;
 	int ret;

 	tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL);
 	if (!tps)
 		return -ENOMEM;

 	i2c_set_clientdata(client, tps);

 	tps->dev = &client->dev;

 	tps->regmap = devm_regmap_init_i2c(client, &tps65219_regmap_config);
 	if (IS_ERR(tps->regmap)) {
 		ret = PTR_ERR(tps->regmap);
 		dev_err(tps->dev, "Failed to allocate register map: %d\n", ret);
 		return ret;
 	}

 	ret = devm_regmap_add_irq_chip(&client->dev, tps->regmap, client->irq,
 				       IRQF_ONESHOT, 0, &tps65219_irq_chip,
 				       &tps->irq_data);
 	if (ret)
 		return ret;

 	ret = regmap_read(tps->regmap, TPS65219_REG_TI_DEV_ID, &chipid);
 	if (ret) {
 		dev_err(tps->dev, "Failed to read device ID: %d\n", ret);
 		return ret;
 	}

 	ret = devm_mfd_add_devices(tps->dev, PLATFORM_DEVID_AUTO,
 				   tps65219_cells, ARRAY_SIZE(tps65219_cells),
 				   NULL, 0, regmap_irq_get_domain(tps->irq_data));
 	if (ret) {
 		dev_err(tps->dev, "Failed to add child devices: %d\n", ret);
 		return ret;
 	}

 	pwr_button = of_property_read_bool(tps->dev->of_node, "ti,power-button");
 	if (pwr_button) {
 		ret = devm_mfd_add_devices(tps->dev, PLATFORM_DEVID_AUTO,
 					   &tps65219_pwrbutton_cell, 1, NULL, 0,
 					   regmap_irq_get_domain(tps->irq_data));
 		if (ret) {
 			dev_err(tps->dev, "Failed to add power-button: %d\n", ret);
 			return ret;
 		}
 	}

 	ret = devm_register_restart_handler(tps->dev,
 					    tps65219_restart_handler,
 					    tps);

 	if (ret) {
 		dev_err(tps->dev, "cannot register restart handler, %d\n", ret);
 		return ret;
 	}

 	ret = devm_register_power_off_handler(tps->dev,
 					      tps65219_power_off_handler,
 					      tps);
 	if (ret) {
 		dev_err(tps->dev, "failed to register power-off handler: %d\n", ret);
 		return ret;
 	}
 	return 0;
 }

 static const struct of_device_id of_tps65219_match_table[] = {
 	{ .compatible = "ti,tps65219", },
 	{}
 };
 MODULE_DEVICE_TABLE(of, of_tps65219_match_table);

 static struct i2c_driver tps65219_driver = {
 	.driver		= {
 		.name	= "tps65219",
 		.of_match_table = of_tps65219_match_table,
 	},
 	.probe		= tps65219_probe,
 };
 module_i2c_driver(tps65219_driver);

 MODULE_AUTHOR("Jerome Neanne <jneanne@baylibre.com>");
 MODULE_DESCRIPTION("TPS65219 power management IC driver");
 MODULE_LICENSE("GPL");
	// SPDX-License-Identifier: GPL-2.0
	//
	// Driver for TPS65219 Integrated Power Management Integrated Chips (PMIC)
	//
	// Copyright (C) 2022 BayLibre Incorporated - https://www.baylibre.com/

	#include <linux/i2c.h>
	#include <linux/reboot.h>
	#include <linux/regmap.h>

	#include <linux/mfd/core.h>
	#include <linux/mfd/tps65219.h>

	static int tps65219_warm_reset(struct tps65219 *tps)
	{
	return regmap_update_bits(tps->regmap, TPS65219_REG_MFP_CTRL,
	TPS65219_MFP_WARM_RESET_I2C_CTRL_MASK,
	TPS65219_MFP_WARM_RESET_I2C_CTRL_MASK);
	}

	static int tps65219_cold_reset(struct tps65219 *tps)
	{
	return regmap_update_bits(tps->regmap, TPS65219_REG_MFP_CTRL,
	TPS65219_MFP_COLD_RESET_I2C_CTRL_MASK,
	TPS65219_MFP_COLD_RESET_I2C_CTRL_MASK);
	}

	static int tps65219_soft_shutdown(struct tps65219 *tps)
	{
	return regmap_update_bits(tps->regmap, TPS65219_REG_MFP_CTRL,
	TPS65219_MFP_I2C_OFF_REQ_MASK,
	TPS65219_MFP_I2C_OFF_REQ_MASK);
	}

	static int tps65219_power_off_handler(struct sys_off_data *data)
	{
	tps65219_soft_shutdown(data->cb_data);
	return NOTIFY_DONE;
	}

	static int tps65219_restart(struct tps65219 *tps, unsigned long reboot_mode)
	{
	if (reboot_mode == REBOOT_WARM)
	tps65219_warm_reset(tps);
	else
	tps65219_cold_reset(tps);

	return NOTIFY_DONE;
	}

	static int tps65219_restart_handler(struct sys_off_data *data)
	{
	tps65219_restart(data->cb_data, data->mode);
	return NOTIFY_DONE;
	}

	static const struct resource tps65219_pwrbutton_resources[] = {
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_PB_FALLING_EDGE_DETECT, "falling"),
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_PB_RISING_EDGE_DETECT, "rising"),
	};

	static const struct resource tps65219_regulator_resources[] = {
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO3_SCG, "LDO3_SCG"),
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO3_OC, "LDO3_OC"),
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO3_UV, "LDO3_UV"),
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO4_SCG, "LDO4_SCG"),
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO4_OC, "LDO4_OC"),
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO4_UV, "LDO4_UV"),
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO1_SCG, "LDO1_SCG"),
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO1_OC, "LDO1_OC"),
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO1_UV, "LDO1_UV"),
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO2_SCG, "LDO2_SCG"),
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO2_OC, "LDO2_OC"),
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO2_UV, "LDO2_UV"),
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK3_SCG, "BUCK3_SCG"),
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK3_OC, "BUCK3_OC"),
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK3_NEG_OC, "BUCK3_NEG_OC"),
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK3_UV, "BUCK3_UV"),
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK1_SCG, "BUCK1_SCG"),
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK1_OC, "BUCK1_OC"),
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK1_NEG_OC, "BUCK1_NEG_OC"),
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK1_UV, "BUCK1_UV"),
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK2_SCG, "BUCK2_SCG"),
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK2_OC, "BUCK2_OC"),
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK2_NEG_OC, "BUCK2_NEG_OC"),
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK2_UV, "BUCK2_UV"),
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK1_RV, "BUCK1_RV"),
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK2_RV, "BUCK2_RV"),
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK3_RV, "BUCK3_RV"),
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO1_RV, "LDO1_RV"),
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO2_RV, "LDO2_RV"),
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO3_RV, "LDO3_RV"),
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO4_RV, "LDO4_RV"),
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK1_RV_SD, "BUCK1_RV_SD"),
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK2_RV_SD, "BUCK2_RV_SD"),
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK3_RV_SD, "BUCK3_RV_SD"),
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO1_RV_SD, "LDO1_RV_SD"),
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO2_RV_SD, "LDO2_RV_SD"),
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO3_RV_SD, "LDO3_RV_SD"),
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO4_RV_SD, "LDO4_RV_SD"),
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_TIMEOUT, "TIMEOUT"),
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_SENSOR_3_WARM, "SENSOR_3_WARM"),
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_SENSOR_2_WARM, "SENSOR_2_WARM"),
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_SENSOR_1_WARM, "SENSOR_1_WARM"),
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_SENSOR_0_WARM, "SENSOR_0_WARM"),
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_SENSOR_3_HOT, "SENSOR_3_HOT"),
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_SENSOR_2_HOT, "SENSOR_2_HOT"),
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_SENSOR_1_HOT, "SENSOR_1_HOT"),
	DEFINE_RES_IRQ_NAMED(TPS65219_INT_SENSOR_0_HOT, "SENSOR_0_HOT"),
	};

	static const struct mfd_cell tps65219_cells[] = {
	{
	.name = "tps65219-regulator",
	.resources = tps65219_regulator_resources,
	.num_resources = ARRAY_SIZE(tps65219_regulator_resources),
	},
	{ .name = "tps65219-gpio", },
	};

	static const struct mfd_cell tps65219_pwrbutton_cell = {
	.name = "tps65219-pwrbutton",
	.resources = tps65219_pwrbutton_resources,
	.num_resources = ARRAY_SIZE(tps65219_pwrbutton_resources),
	};

	static const struct regmap_config tps65219_regmap_config = {
	.reg_bits = 8,
	.val_bits = 8,
	.max_register = TPS65219_REG_FACTORY_CONFIG_2,
	};

	/*
	* Mapping of main IRQ register bits to sub-IRQ register offsets so that we can
	* access corect sub-IRQ registers based on bits that are set in main IRQ
	* register.
	*/
	/* Timeout Residual Voltage Shutdown */
	static unsigned int bit0_offsets[] = { TPS65219_REG_INT_TO_RV_POS };
	static unsigned int bit1_offsets[] = { TPS65219_REG_INT_RV_POS }; /* Residual Voltage */
	static unsigned int bit2_offsets[] = { TPS65219_REG_INT_SYS_POS }; /* System */
	static unsigned int bit3_offsets[] = { TPS65219_REG_INT_BUCK_1_2_POS }; /* Buck 1-2 */
	static unsigned int bit4_offsets[] = { TPS65219_REG_INT_BUCK_3_POS }; /* Buck 3 */
	static unsigned int bit5_offsets[] = { TPS65219_REG_INT_LDO_1_2_POS }; /* LDO 1-2 */
	static unsigned int bit6_offsets[] = { TPS65219_REG_INT_LDO_3_4_POS }; /* LDO 3-4 */
	static unsigned int bit7_offsets[] = { TPS65219_REG_INT_PB_POS }; /* Power Button */

	static struct regmap_irq_sub_irq_map tps65219_sub_irq_offsets[] = {
	REGMAP_IRQ_MAIN_REG_OFFSET(bit0_offsets),
	REGMAP_IRQ_MAIN_REG_OFFSET(bit1_offsets),
	REGMAP_IRQ_MAIN_REG_OFFSET(bit2_offsets),
	REGMAP_IRQ_MAIN_REG_OFFSET(bit3_offsets),
	REGMAP_IRQ_MAIN_REG_OFFSET(bit4_offsets),
	REGMAP_IRQ_MAIN_REG_OFFSET(bit5_offsets),
	REGMAP_IRQ_MAIN_REG_OFFSET(bit6_offsets),
	REGMAP_IRQ_MAIN_REG_OFFSET(bit7_offsets),
	};

	#define TPS65219_REGMAP_IRQ_REG(int_name, register_position) \
	REGMAP_IRQ_REG(int_name, register_position, int_name##_MASK)

	static struct regmap_irq tps65219_irqs[] = {
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO3_SCG, TPS65219_REG_INT_LDO_3_4_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO3_OC, TPS65219_REG_INT_LDO_3_4_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO3_UV, TPS65219_REG_INT_LDO_3_4_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO4_SCG, TPS65219_REG_INT_LDO_3_4_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO4_OC, TPS65219_REG_INT_LDO_3_4_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO4_UV, TPS65219_REG_INT_LDO_3_4_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO1_SCG, TPS65219_REG_INT_LDO_1_2_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO1_OC, TPS65219_REG_INT_LDO_1_2_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO1_UV, TPS65219_REG_INT_LDO_1_2_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO2_SCG, TPS65219_REG_INT_LDO_1_2_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO2_OC, TPS65219_REG_INT_LDO_1_2_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO2_UV, TPS65219_REG_INT_LDO_1_2_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK3_SCG, TPS65219_REG_INT_BUCK_3_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK3_OC, TPS65219_REG_INT_BUCK_3_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK3_NEG_OC, TPS65219_REG_INT_BUCK_3_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK3_UV, TPS65219_REG_INT_BUCK_3_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK2_SCG, TPS65219_REG_INT_BUCK_1_2_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK2_OC, TPS65219_REG_INT_BUCK_1_2_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK2_NEG_OC, TPS65219_REG_INT_BUCK_1_2_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK2_UV, TPS65219_REG_INT_BUCK_1_2_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK1_SCG, TPS65219_REG_INT_BUCK_1_2_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK1_OC, TPS65219_REG_INT_BUCK_1_2_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK1_NEG_OC, TPS65219_REG_INT_BUCK_1_2_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK1_UV, TPS65219_REG_INT_BUCK_1_2_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_SENSOR_3_WARM, TPS65219_REG_INT_SYS_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_SENSOR_2_WARM, TPS65219_REG_INT_SYS_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_SENSOR_1_WARM, TPS65219_REG_INT_SYS_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_SENSOR_0_WARM, TPS65219_REG_INT_SYS_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_SENSOR_3_HOT, TPS65219_REG_INT_SYS_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_SENSOR_2_HOT, TPS65219_REG_INT_SYS_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_SENSOR_1_HOT, TPS65219_REG_INT_SYS_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_SENSOR_0_HOT, TPS65219_REG_INT_SYS_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK1_RV, TPS65219_REG_INT_RV_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK2_RV, TPS65219_REG_INT_RV_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK3_RV, TPS65219_REG_INT_RV_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO1_RV, TPS65219_REG_INT_RV_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO2_RV, TPS65219_REG_INT_RV_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO3_RV, TPS65219_REG_INT_RV_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO4_RV, TPS65219_REG_INT_RV_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK1_RV_SD, TPS65219_REG_INT_TO_RV_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK2_RV_SD, TPS65219_REG_INT_TO_RV_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK3_RV_SD, TPS65219_REG_INT_TO_RV_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO1_RV_SD, TPS65219_REG_INT_TO_RV_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO2_RV_SD, TPS65219_REG_INT_TO_RV_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO3_RV_SD, TPS65219_REG_INT_TO_RV_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO4_RV_SD, TPS65219_REG_INT_TO_RV_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_TIMEOUT, TPS65219_REG_INT_TO_RV_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_PB_FALLING_EDGE_DETECT, TPS65219_REG_INT_PB_POS),
	TPS65219_REGMAP_IRQ_REG(TPS65219_INT_PB_RISING_EDGE_DETECT, TPS65219_REG_INT_PB_POS),
	};

	static struct regmap_irq_chip tps65219_irq_chip = {
	.name = "tps65219_irq",
	.main_status = TPS65219_REG_INT_SOURCE,
	.num_main_regs = 1,
	.num_main_status_bits = 8,
	.irqs = tps65219_irqs,
	.num_irqs = ARRAY_SIZE(tps65219_irqs),
	.status_base = TPS65219_REG_INT_LDO_3_4,
	.ack_base = TPS65219_REG_INT_LDO_3_4,
	.clear_ack = 1,
	.num_regs = 8,
	.sub_reg_offsets = tps65219_sub_irq_offsets,
	};

	static int tps65219_probe(struct i2c_client *client)
	{
	struct tps65219 *tps;
	unsigned int chipid;
	bool pwr_button;
	int ret;

	tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL);
	if (!tps)
	return -ENOMEM;

	i2c_set_clientdata(client, tps);

	tps->dev = &client->dev;

	tps->regmap = devm_regmap_init_i2c(client, &tps65219_regmap_config);
	if (IS_ERR(tps->regmap)) {
	ret = PTR_ERR(tps->regmap);
	dev_err(tps->dev, "Failed to allocate register map: %d\n", ret);
	return ret;
	}

	ret = devm_regmap_add_irq_chip(&client->dev, tps->regmap, client->irq,
	IRQF_ONESHOT, 0, &tps65219_irq_chip,
	&tps->irq_data);
	if (ret)
	return ret;

	ret = regmap_read(tps->regmap, TPS65219_REG_TI_DEV_ID, &chipid);
	if (ret) {
	dev_err(tps->dev, "Failed to read device ID: %d\n", ret);
	return ret;
	}

	ret = devm_mfd_add_devices(tps->dev, PLATFORM_DEVID_AUTO,
	tps65219_cells, ARRAY_SIZE(tps65219_cells),
	NULL, 0, regmap_irq_get_domain(tps->irq_data));
	if (ret) {
	dev_err(tps->dev, "Failed to add child devices: %d\n", ret);
	return ret;
	}

	pwr_button = of_property_read_bool(tps->dev->of_node, "ti,power-button");
	if (pwr_button) {
	ret = devm_mfd_add_devices(tps->dev, PLATFORM_DEVID_AUTO,
	&tps65219_pwrbutton_cell, 1, NULL, 0,
	regmap_irq_get_domain(tps->irq_data));
	if (ret) {
	dev_err(tps->dev, "Failed to add power-button: %d\n", ret);
	return ret;
	}
	}

	ret = devm_register_restart_handler(tps->dev,
	tps65219_restart_handler,
	tps);

	if (ret) {
	dev_err(tps->dev, "cannot register restart handler, %d\n", ret);
	return ret;
	}

	ret = devm_register_power_off_handler(tps->dev,
	tps65219_power_off_handler,
	tps);
	if (ret) {
	dev_err(tps->dev, "failed to register power-off handler: %d\n", ret);
	return ret;
	}
	return 0;
	}

	static const struct of_device_id of_tps65219_match_table[] = {
	{ .compatible = "ti,tps65219", },
	{}
	};
	MODULE_DEVICE_TABLE(of, of_tps65219_match_table);

	static struct i2c_driver tps65219_driver = {
	.driver = {
	.name = "tps65219",
	.of_match_table = of_tps65219_match_table,
	},
	.probe = tps65219_probe,
	};
	module_i2c_driver(tps65219_driver);

	MODULE_AUTHOR("Jerome Neanne <jneanne@baylibre.com>");
	MODULE_DESCRIPTION("TPS65219 power management IC driver");
	MODULE_LICENSE("GPL");