[linux-2.6-block.git] / drivers / regulator / max77686-regulator.c

// SPDX-License-Identifier: GPL-2.0+
//
// max77686.c - Regulator driver for the Maxim 77686
//
// Copyright (C) 2012 Samsung Electronics
// Chiwoong Byun <woong.byun@samsung.com>
// Jonghwa Lee <jonghwa3.lee@samsung.com>
//
// This driver is based on max8997.c

#include <linux/kernel.h>
#include <linux/bug.h>
#include <linux/err.h>
#include <linux/gpio/consumer.h>
#include <linux/slab.h>
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/of_regulator.h>
#include <linux/mfd/max77686.h>
#include <linux/mfd/max77686-private.h>

#define MAX77686_LDO_MINUV	800000
#define MAX77686_LDO_UVSTEP	50000
#define MAX77686_LDO_LOW_MINUV	800000
#define MAX77686_LDO_LOW_UVSTEP	25000
#define MAX77686_BUCK_MINUV	750000
#define MAX77686_BUCK_UVSTEP	50000
#define MAX77686_BUCK_ENABLE_TIME	40		/* us */
#define MAX77686_DVS_ENABLE_TIME	22		/* us */
#define MAX77686_RAMP_DELAY	100000			/* uV/us */
#define MAX77686_DVS_RAMP_DELAY	27500			/* uV/us */
#define MAX77686_DVS_MINUV	600000
#define MAX77686_DVS_UVSTEP	12500

/*
 * Value for configuring buck[89] and LDO{20,21,22} as GPIO control.
 * It is the same as 'off' for other regulators.
 */
#define MAX77686_GPIO_CONTROL		0x0
/*
 * Values used for configuring LDOs and bucks.
 * Forcing low power mode: LDO1, 3-5, 9, 13, 17-26
 */
#define MAX77686_LDO_LOWPOWER		0x1
/*
 * On/off controlled by PWRREQ:
 *  - LDO2, 6-8, 10-12, 14-16
 *  - buck[1234]
 */
#define MAX77686_OFF_PWRREQ		0x1
/* Low power mode controlled by PWRREQ: All LDOs */
#define MAX77686_LDO_LOWPOWER_PWRREQ	0x2
/* Forcing low power mode: buck[234] */
#define MAX77686_BUCK_LOWPOWER		0x2
#define MAX77686_NORMAL			0x3

#define MAX77686_OPMODE_SHIFT	6
#define MAX77686_OPMODE_BUCK234_SHIFT	4
#define MAX77686_OPMODE_MASK	0x3

#define MAX77686_VSEL_MASK	0x3F
#define MAX77686_DVS_VSEL_MASK	0xFF

#define MAX77686_RAMP_RATE_MASK	0xC0

#define MAX77686_REGULATORS	MAX77686_REG_MAX
#define MAX77686_LDOS		26

struct max77686_data {
	struct device *dev;
	DECLARE_BITMAP(gpio_enabled, MAX77686_REGULATORS);

	/* Array indexed by regulator id */
	unsigned int opmode[MAX77686_REGULATORS];
};

static unsigned int max77686_get_opmode_shift(int id)
{
	switch (id) {
	case MAX77686_BUCK1:
	case MAX77686_BUCK5 ... MAX77686_BUCK9:
		return 0;
	case MAX77686_BUCK2 ... MAX77686_BUCK4:
		return MAX77686_OPMODE_BUCK234_SHIFT;
	default:
		/* all LDOs */
		return MAX77686_OPMODE_SHIFT;
	}
}

/*
 * When regulator is configured for GPIO control then it
 * replaces "normal" mode. Any change from low power mode to normal
 * should actually change to GPIO control.
 * Map normal mode to proper value for such regulators.
 */
static unsigned int max77686_map_normal_mode(struct max77686_data *max77686,
					     int id)
{
	switch (id) {
	case MAX77686_BUCK8:
	case MAX77686_BUCK9:
	case MAX77686_LDO20 ... MAX77686_LDO22:
		if (test_bit(id, max77686->gpio_enabled))
			return MAX77686_GPIO_CONTROL;
	}

	return MAX77686_NORMAL;
}

/* Some BUCKs and LDOs supports Normal[ON/OFF] mode during suspend */
static int max77686_set_suspend_disable(struct regulator_dev *rdev)
{
	unsigned int val, shift;
	struct max77686_data *max77686 = rdev_get_drvdata(rdev);
	int ret, id = rdev_get_id(rdev);

	shift = max77686_get_opmode_shift(id);
	val = MAX77686_OFF_PWRREQ;

	ret = regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
				 rdev->desc->enable_mask, val << shift);
	if (ret)
		return ret;

	max77686->opmode[id] = val;
	return 0;
}

/* Some LDOs supports [LPM/Normal]ON mode during suspend state */
static int max77686_set_suspend_mode(struct regulator_dev *rdev,
				     unsigned int mode)
{
	struct max77686_data *max77686 = rdev_get_drvdata(rdev);
	unsigned int val;
	int ret, id = rdev_get_id(rdev);

	/* BUCK[5-9] doesn't support this feature */
	if (id >= MAX77686_BUCK5)
		return 0;

	switch (mode) {
	case REGULATOR_MODE_IDLE:			/* ON in LP Mode */
		val = MAX77686_LDO_LOWPOWER_PWRREQ;
		break;
	case REGULATOR_MODE_NORMAL:			/* ON in Normal Mode */
		val = max77686_map_normal_mode(max77686, id);
		break;
	default:
		pr_warn("%s: regulator_suspend_mode : 0x%x not supported\n",
			rdev->desc->name, mode);
		return -EINVAL;
	}

	ret = regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
				  rdev->desc->enable_mask,
				  val << MAX77686_OPMODE_SHIFT);
	if (ret)
		return ret;

	max77686->opmode[id] = val;
	return 0;
}

/* Some LDOs supports LPM-ON/OFF/Normal-ON mode during suspend state */
static int max77686_ldo_set_suspend_mode(struct regulator_dev *rdev,
				     unsigned int mode)
{
	unsigned int val;
	struct max77686_data *max77686 = rdev_get_drvdata(rdev);
	int ret, id = rdev_get_id(rdev);

	switch (mode) {
	case REGULATOR_MODE_STANDBY:			/* switch off */
		val = MAX77686_OFF_PWRREQ;
		break;
	case REGULATOR_MODE_IDLE:			/* ON in LP Mode */
		val = MAX77686_LDO_LOWPOWER_PWRREQ;
		break;
	case REGULATOR_MODE_NORMAL:			/* ON in Normal Mode */
		val = max77686_map_normal_mode(max77686, id);
		break;
	default:
		pr_warn("%s: regulator_suspend_mode : 0x%x not supported\n",
			rdev->desc->name, mode);
		return -EINVAL;
	}

	ret = regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
				 rdev->desc->enable_mask,
				 val << MAX77686_OPMODE_SHIFT);
	if (ret)
		return ret;

	max77686->opmode[id] = val;
	return 0;
}

static int max77686_enable(struct regulator_dev *rdev)
{
	struct max77686_data *max77686 = rdev_get_drvdata(rdev);
	unsigned int shift;
	int id = rdev_get_id(rdev);

	shift = max77686_get_opmode_shift(id);

	if (max77686->opmode[id] == MAX77686_OFF_PWRREQ)
		max77686->opmode[id] = max77686_map_normal_mode(max77686, id);

	return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
				  rdev->desc->enable_mask,
				  max77686->opmode[id] << shift);
}

static int max77686_of_parse_cb(struct device_node *np,
		const struct regulator_desc *desc,
		struct regulator_config *config)
{
	struct max77686_data *max77686 = config->driver_data;
	int ret;

	switch (desc->id) {
	case MAX77686_BUCK8:
	case MAX77686_BUCK9:
	case MAX77686_LDO20 ... MAX77686_LDO22:
		config->ena_gpiod = fwnode_gpiod_get_index(
				of_fwnode_handle(np),
				"maxim,ena",
				0,
				GPIOD_OUT_HIGH | GPIOD_FLAGS_BIT_NONEXCLUSIVE,
				"max77686-regulator");
		if (IS_ERR(config->ena_gpiod))
			config->ena_gpiod = NULL;
		break;
	default:
		return 0;
	}

	if (config->ena_gpiod) {
		set_bit(desc->id, max77686->gpio_enabled);

		ret = regmap_update_bits(config->regmap, desc->enable_reg,
					 desc->enable_mask,
					 MAX77686_GPIO_CONTROL);
		if (ret) {
			gpiod_put(config->ena_gpiod);
			config->ena_gpiod = NULL;
		}
	}

	return 0;
}

static const unsigned int max77686_buck_dvs_ramp_table[] = {
	13750, 27500, 55000, 100000
};

static const struct regulator_ops max77686_ops = {
	.list_voltage		= regulator_list_voltage_linear,
	.map_voltage		= regulator_map_voltage_linear,
	.is_enabled		= regulator_is_enabled_regmap,
	.enable			= max77686_enable,
	.disable		= regulator_disable_regmap,
	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
	.set_voltage_time_sel	= regulator_set_voltage_time_sel,
	.set_suspend_mode	= max77686_set_suspend_mode,
};

static const struct regulator_ops max77686_ldo_ops = {
	.list_voltage		= regulator_list_voltage_linear,
	.map_voltage		= regulator_map_voltage_linear,
	.is_enabled		= regulator_is_enabled_regmap,
	.enable			= max77686_enable,
	.disable		= regulator_disable_regmap,
	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
	.set_voltage_time_sel	= regulator_set_voltage_time_sel,
	.set_suspend_mode	= max77686_ldo_set_suspend_mode,
	.set_suspend_disable	= max77686_set_suspend_disable,
};

static const struct regulator_ops max77686_buck1_ops = {
	.list_voltage		= regulator_list_voltage_linear,
	.map_voltage		= regulator_map_voltage_linear,
	.is_enabled		= regulator_is_enabled_regmap,
	.enable			= max77686_enable,
	.disable		= regulator_disable_regmap,
	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
	.set_voltage_time_sel	= regulator_set_voltage_time_sel,
	.set_suspend_disable	= max77686_set_suspend_disable,
};

static const struct regulator_ops max77686_buck_dvs_ops = {
	.list_voltage		= regulator_list_voltage_linear,
	.map_voltage		= regulator_map_voltage_linear,
	.is_enabled		= regulator_is_enabled_regmap,
	.enable			= max77686_enable,
	.disable		= regulator_disable_regmap,
	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
	.set_voltage_time_sel	= regulator_set_voltage_time_sel,
	.set_ramp_delay		= regulator_set_ramp_delay_regmap,
	.set_suspend_disable	= max77686_set_suspend_disable,
};

#define regulator_desc_ldo(num)		{				\
	.name		= "LDO"#num,					\
	.of_match	= of_match_ptr("LDO"#num),			\
	.regulators_node	= of_match_ptr("voltage-regulators"),	\
	.of_parse_cb	= max77686_of_parse_cb,				\
	.id		= MAX77686_LDO##num,				\
	.ops		= &max77686_ops,				\
	.type		= REGULATOR_VOLTAGE,				\
	.owner		= THIS_MODULE,					\
	.min_uV		= MAX77686_LDO_MINUV,				\
	.uV_step	= MAX77686_LDO_UVSTEP,				\
	.ramp_delay	= MAX77686_RAMP_DELAY,				\
	.n_voltages	= MAX77686_VSEL_MASK + 1,			\
	.vsel_reg	= MAX77686_REG_LDO1CTRL1 + num - 1,		\
	.vsel_mask	= MAX77686_VSEL_MASK,				\
	.enable_reg	= MAX77686_REG_LDO1CTRL1 + num - 1,		\
	.enable_mask	= MAX77686_OPMODE_MASK				\
			<< MAX77686_OPMODE_SHIFT,			\
}
#define regulator_desc_lpm_ldo(num)	{				\
	.name		= "LDO"#num,					\
	.of_match	= of_match_ptr("LDO"#num),			\
	.regulators_node	= of_match_ptr("voltage-regulators"),	\
	.id		= MAX77686_LDO##num,				\
	.ops		= &max77686_ldo_ops,				\
	.type		= REGULATOR_VOLTAGE,				\
	.owner		= THIS_MODULE,					\
	.min_uV		= MAX77686_LDO_MINUV,				\
	.uV_step	= MAX77686_LDO_UVSTEP,				\
	.ramp_delay	= MAX77686_RAMP_DELAY,				\
	.n_voltages	= MAX77686_VSEL_MASK + 1,			\
	.vsel_reg	= MAX77686_REG_LDO1CTRL1 + num - 1,		\
	.vsel_mask	= MAX77686_VSEL_MASK,				\
	.enable_reg	= MAX77686_REG_LDO1CTRL1 + num - 1,		\
	.enable_mask	= MAX77686_OPMODE_MASK				\
			<< MAX77686_OPMODE_SHIFT,			\
}
#define regulator_desc_ldo_low(num)		{			\
	.name		= "LDO"#num,					\
	.of_match	= of_match_ptr("LDO"#num),			\
	.regulators_node	= of_match_ptr("voltage-regulators"),	\
	.id		= MAX77686_LDO##num,				\
	.ops		= &max77686_ldo_ops,				\
	.type		= REGULATOR_VOLTAGE,				\
	.owner		= THIS_MODULE,					\
	.min_uV		= MAX77686_LDO_LOW_MINUV,			\
	.uV_step	= MAX77686_LDO_LOW_UVSTEP,			\
	.ramp_delay	= MAX77686_RAMP_DELAY,				\
	.n_voltages	= MAX77686_VSEL_MASK + 1,			\
	.vsel_reg	= MAX77686_REG_LDO1CTRL1 + num - 1,		\
	.vsel_mask	= MAX77686_VSEL_MASK,				\
	.enable_reg	= MAX77686_REG_LDO1CTRL1 + num - 1,		\
	.enable_mask	= MAX77686_OPMODE_MASK				\
			<< MAX77686_OPMODE_SHIFT,			\
}
#define regulator_desc_ldo1_low(num)		{			\
	.name		= "LDO"#num,					\
	.of_match	= of_match_ptr("LDO"#num),			\
	.regulators_node	= of_match_ptr("voltage-regulators"),	\
	.id		= MAX77686_LDO##num,				\
	.ops		= &max77686_ops,				\
	.type		= REGULATOR_VOLTAGE,				\
	.owner		= THIS_MODULE,					\
	.min_uV		= MAX77686_LDO_LOW_MINUV,			\
	.uV_step	= MAX77686_LDO_LOW_UVSTEP,			\
	.ramp_delay	= MAX77686_RAMP_DELAY,				\
	.n_voltages	= MAX77686_VSEL_MASK + 1,			\
	.vsel_reg	= MAX77686_REG_LDO1CTRL1 + num - 1,		\
	.vsel_mask	= MAX77686_VSEL_MASK,				\
	.enable_reg	= MAX77686_REG_LDO1CTRL1 + num - 1,		\
	.enable_mask	= MAX77686_OPMODE_MASK				\
			<< MAX77686_OPMODE_SHIFT,			\
}
#define regulator_desc_buck(num)		{			\
	.name		= "BUCK"#num,					\
	.of_match	= of_match_ptr("BUCK"#num),			\
	.regulators_node	= of_match_ptr("voltage-regulators"),	\
	.of_parse_cb	= max77686_of_parse_cb,				\
	.id		= MAX77686_BUCK##num,				\
	.ops		= &max77686_ops,				\
	.type		= REGULATOR_VOLTAGE,				\
	.owner		= THIS_MODULE,					\
	.min_uV		= MAX77686_BUCK_MINUV,				\
	.uV_step	= MAX77686_BUCK_UVSTEP,				\
	.ramp_delay	= MAX77686_RAMP_DELAY,				\
	.enable_time	= MAX77686_BUCK_ENABLE_TIME,			\
	.n_voltages	= MAX77686_VSEL_MASK + 1,			\
	.vsel_reg	= MAX77686_REG_BUCK5OUT + (num - 5) * 2,	\
	.vsel_mask	= MAX77686_VSEL_MASK,				\
	.enable_reg	= MAX77686_REG_BUCK5CTRL + (num - 5) * 2,	\
	.enable_mask	= MAX77686_OPMODE_MASK,				\
}
#define regulator_desc_buck1(num)		{			\
	.name		= "BUCK"#num,					\
	.of_match	= of_match_ptr("BUCK"#num),			\
	.regulators_node	= of_match_ptr("voltage-regulators"),	\
	.id		= MAX77686_BUCK##num,				\
	.ops		= &max77686_buck1_ops,				\
	.type		= REGULATOR_VOLTAGE,				\
	.owner		= THIS_MODULE,					\
	.min_uV		= MAX77686_BUCK_MINUV,				\
	.uV_step	= MAX77686_BUCK_UVSTEP,				\
	.ramp_delay	= MAX77686_RAMP_DELAY,				\
	.enable_time	= MAX77686_BUCK_ENABLE_TIME,			\
	.n_voltages	= MAX77686_VSEL_MASK + 1,			\
	.vsel_reg	= MAX77686_REG_BUCK1OUT,			\
	.vsel_mask	= MAX77686_VSEL_MASK,				\
	.enable_reg	= MAX77686_REG_BUCK1CTRL,			\
	.enable_mask	= MAX77686_OPMODE_MASK,				\
}
#define regulator_desc_buck_dvs(num)		{			\
	.name		= "BUCK"#num,					\
	.of_match	= of_match_ptr("BUCK"#num),			\
	.regulators_node	= of_match_ptr("voltage-regulators"),	\
	.id		= MAX77686_BUCK##num,				\
	.ops		= &max77686_buck_dvs_ops,			\
	.type		= REGULATOR_VOLTAGE,				\
	.owner		= THIS_MODULE,					\
	.min_uV		= MAX77686_DVS_MINUV,				\
	.uV_step	= MAX77686_DVS_UVSTEP,				\
	.ramp_delay	= MAX77686_DVS_RAMP_DELAY,			\
	.enable_time	= MAX77686_DVS_ENABLE_TIME,			\
	.n_voltages	= MAX77686_DVS_VSEL_MASK + 1,			\
	.vsel_reg	= MAX77686_REG_BUCK2DVS1 + (num - 2) * 10,	\
	.vsel_mask	= MAX77686_DVS_VSEL_MASK,			\
	.enable_reg	= MAX77686_REG_BUCK2CTRL1 + (num - 2) * 10,	\
	.enable_mask	= MAX77686_OPMODE_MASK				\
			<< MAX77686_OPMODE_BUCK234_SHIFT,		\
	.ramp_reg	= MAX77686_REG_BUCK2CTRL1 + (num - 2) * 10,	\
	.ramp_mask	= MAX77686_RAMP_RATE_MASK,			\
	.ramp_delay_table = max77686_buck_dvs_ramp_table,		\
	.n_ramp_values	= ARRAY_SIZE(max77686_buck_dvs_ramp_table),	\
}

static const struct regulator_desc regulators[] = {
	regulator_desc_ldo1_low(1),
	regulator_desc_ldo_low(2),
	regulator_desc_ldo(3),
	regulator_desc_ldo(4),
	regulator_desc_ldo(5),
	regulator_desc_ldo_low(6),
	regulator_desc_ldo_low(7),
	regulator_desc_ldo_low(8),
	regulator_desc_ldo(9),
	regulator_desc_lpm_ldo(10),
	regulator_desc_lpm_ldo(11),
	regulator_desc_lpm_ldo(12),
	regulator_desc_ldo(13),
	regulator_desc_lpm_ldo(14),
	regulator_desc_ldo_low(15),
	regulator_desc_lpm_ldo(16),
	regulator_desc_ldo(17),
	regulator_desc_ldo(18),
	regulator_desc_ldo(19),
	regulator_desc_ldo(20),
	regulator_desc_ldo(21),
	regulator_desc_ldo(22),
	regulator_desc_ldo(23),
	regulator_desc_ldo(24),
	regulator_desc_ldo(25),
	regulator_desc_ldo(26),
	regulator_desc_buck1(1),
	regulator_desc_buck_dvs(2),
	regulator_desc_buck_dvs(3),
	regulator_desc_buck_dvs(4),
	regulator_desc_buck(5),
	regulator_desc_buck(6),
	regulator_desc_buck(7),
	regulator_desc_buck(8),
	regulator_desc_buck(9),
};

static int max77686_pmic_probe(struct platform_device *pdev)
{
	struct max77686_dev *iodev = dev_get_drvdata(pdev->dev.parent);
	struct max77686_data *max77686;
	int i;
	struct regulator_config config = { };

	dev_dbg(&pdev->dev, "%s\n", __func__);

	max77686 = devm_kzalloc(&pdev->dev, sizeof(struct max77686_data),
				GFP_KERNEL);
	if (!max77686)
		return -ENOMEM;

	max77686->dev = &pdev->dev;
	config.dev = iodev->dev;
	config.regmap = iodev->regmap;
	config.driver_data = max77686;
	platform_set_drvdata(pdev, max77686);

	for (i = 0; i < MAX77686_REGULATORS; i++) {
		struct regulator_dev *rdev;
		int id = regulators[i].id;

		max77686->opmode[id] = MAX77686_NORMAL;
		rdev = devm_regulator_register(&pdev->dev,
						&regulators[i], &config);
		if (IS_ERR(rdev)) {
			int ret = PTR_ERR(rdev);
			dev_err(&pdev->dev,
				"regulator init failed for %d: %d\n", i, ret);
			return ret;
		}
	}

	return 0;
}

static const struct platform_device_id max77686_pmic_id[] = {
	{"max77686-pmic", 0},
	{ },
};
MODULE_DEVICE_TABLE(platform, max77686_pmic_id);

static struct platform_driver max77686_pmic_driver = {
	.driver = {
		.name = "max77686-pmic",
		.probe_type = PROBE_PREFER_ASYNCHRONOUS,
	},
	.probe = max77686_pmic_probe,
	.id_table = max77686_pmic_id,
};

module_platform_driver(max77686_pmic_driver);

MODULE_DESCRIPTION("MAXIM 77686 Regulator Driver");
MODULE_AUTHOR("Chiwoong Byun <woong.byun@samsung.com>");
MODULE_LICENSE("GPL");
Commit	Line	Data
5e9384c7 KK	1	// SPDX-License-Identifier: GPL-2.0+
	2	//
	3	// max77686.c - Regulator driver for the Maxim 77686
	4	//
	5	// Copyright (C) 2012 Samsung Electronics
	6	// Chiwoong Byun <woong.byun@samsung.com>
	7	// Jonghwa Lee <jonghwa3.lee@samsung.com>
	8	//
	9	// This driver is based on max8997.c
133d4016 JL	10
	11	#include <linux/kernel.h>
	12	#include <linux/bug.h>
133d4016	13	#include <linux/err.h>
96392c3d	14	#include <linux/gpio/consumer.h>
133d4016 JL	15	#include <linux/slab.h>
	16	#include <linux/platform_device.h>
	17	#include <linux/regulator/driver.h>
	18	#include <linux/regulator/machine.h>
4706fcab	19	#include <linux/regulator/of_regulator.h>
133d4016 JL	20	#include <linux/mfd/max77686.h>
	21	#include <linux/mfd/max77686-private.h>
	22
	23	#define MAX77686_LDO_MINUV 800000
	24	#define MAX77686_LDO_UVSTEP 50000
	25	#define MAX77686_LDO_LOW_MINUV 800000
	26	#define MAX77686_LDO_LOW_UVSTEP 25000
	27	#define MAX77686_BUCK_MINUV 750000
	28	#define MAX77686_BUCK_UVSTEP 50000
a9597305 KK	29	#define MAX77686_BUCK_ENABLE_TIME 40 /* us */
a9597305 KK	30	#define MAX77686_DVS_ENABLE_TIME 22 /* us */
852abad2 YSB	31	#define MAX77686_RAMP_DELAY 100000 /* uV/us */
852abad2 YSB	32	#define MAX77686_DVS_RAMP_DELAY 27500 /* uV/us */
133d4016 JL	33	#define MAX77686_DVS_MINUV 600000
	34	#define MAX77686_DVS_UVSTEP 12500
	35
3307e902 KK	36	/*
	37	* Value for configuring buck[89] and LDO{20,21,22} as GPIO control.
	38	* It is the same as 'off' for other regulators.
	39	*/
	40	#define MAX77686_GPIO_CONTROL 0x0
7636f19c KK	41	/*
	42	* Values used for configuring LDOs and bucks.
	43	* Forcing low power mode: LDO1, 3-5, 9, 13, 17-26
	44	*/
	45	#define MAX77686_LDO_LOWPOWER 0x1
	46	/*
	47	* On/off controlled by PWRREQ:
	48	* - LDO2, 6-8, 10-12, 14-16
	49	* - buck[1234]
	50	*/
	51	#define MAX77686_OFF_PWRREQ 0x1
	52	/* Low power mode controlled by PWRREQ: All LDOs */
	53	#define MAX77686_LDO_LOWPOWER_PWRREQ 0x2
	54	/* Forcing low power mode: buck[234] */
	55	#define MAX77686_BUCK_LOWPOWER 0x2
	56	#define MAX77686_NORMAL 0x3
	57
133d4016 JL	58	#define MAX77686_OPMODE_SHIFT 6
	59	#define MAX77686_OPMODE_BUCK234_SHIFT 4
	60	#define MAX77686_OPMODE_MASK 0x3
	61
	62	#define MAX77686_VSEL_MASK 0x3F
	63	#define MAX77686_DVS_VSEL_MASK 0xFF
	64
	65	#define MAX77686_RAMP_RATE_MASK 0xC0
	66
	67	#define MAX77686_REGULATORS MAX77686_REG_MAX
	68	#define MAX77686_LDOS 26
	69
133d4016	70	struct max77686_data {
96392c3d	71	struct device *dev;
c53403a3	72	DECLARE_BITMAP(gpio_enabled, MAX77686_REGULATORS);
3307e902	73
eca29da9	74	/* Array indexed by regulator id */
6d2c896b	75	unsigned int opmode[MAX77686_REGULATORS];
133d4016 JL	76	};
133d4016 JL	77
68c5d186 KK	78	static unsigned int max77686_get_opmode_shift(int id)
	79	{
	80	switch (id) {
	81	case MAX77686_BUCK1:
	82	case MAX77686_BUCK5 ... MAX77686_BUCK9:
	83	return 0;
	84	case MAX77686_BUCK2 ... MAX77686_BUCK4:
	85	return MAX77686_OPMODE_BUCK234_SHIFT;
	86	default:
	87	/* all LDOs */
	88	return MAX77686_OPMODE_SHIFT;
	89	}
	90	}
	91
3307e902 KK	92	/*
	93	* When regulator is configured for GPIO control then it
	94	* replaces "normal" mode. Any change from low power mode to normal
	95	* should actually change to GPIO control.
	96	* Map normal mode to proper value for such regulators.
	97	*/
	98	static unsigned int max77686_map_normal_mode(struct max77686_data *max77686,
	99	int id)
	100	{
	101	switch (id) {
	102	case MAX77686_BUCK8:
	103	case MAX77686_BUCK9:
	104	case MAX77686_LDO20 ... MAX77686_LDO22:
c53403a3	105	if (test_bit(id, max77686->gpio_enabled))
3307e902 KK	106	return MAX77686_GPIO_CONTROL;
	107	}
	108
	109	return MAX77686_NORMAL;
	110	}
	111
78ce6128 KK	112	/* Some BUCKs and LDOs supports Normal[ON/OFF] mode during suspend */
78ce6128 KK	113	static int max77686_set_suspend_disable(struct regulator_dev *rdev)
15282ba9	114	{
68c5d186	115	unsigned int val, shift;
15282ba9	116	struct max77686_data *max77686 = rdev_get_drvdata(rdev);
3ecf198e	117	int ret, id = rdev_get_id(rdev);
15282ba9	118
68c5d186 KK	119	shift = max77686_get_opmode_shift(id);
68c5d186 KK	120	val = MAX77686_OFF_PWRREQ;
15282ba9	121
3ecf198e	122	ret = regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
68c5d186	123	rdev->desc->enable_mask, val << shift);
3ecf198e AL	124	if (ret)
	125	return ret;
	126
40e72149	127	max77686->opmode[id] = val;
3ecf198e	128	return 0;
15282ba9 YSB	129	}
	130
	131	/* Some LDOs supports [LPM/Normal]ON mode during suspend state */
	132	static int max77686_set_suspend_mode(struct regulator_dev *rdev,
	133	unsigned int mode)
	134	{
	135	struct max77686_data *max77686 = rdev_get_drvdata(rdev);
	136	unsigned int val;
3ecf198e	137	int ret, id = rdev_get_id(rdev);
15282ba9 YSB	138
15282ba9 YSB	139	/* BUCK[5-9] doesn't support this feature */
40e72149	140	if (id >= MAX77686_BUCK5)
15282ba9 YSB	141	return 0;
	142
	143	switch (mode) {
	144	case REGULATOR_MODE_IDLE: /* ON in LP Mode */
68c5d186	145	val = MAX77686_LDO_LOWPOWER_PWRREQ;
15282ba9 YSB	146	break;
15282ba9 YSB	147	case REGULATOR_MODE_NORMAL: /* ON in Normal Mode */
3307e902	148	val = max77686_map_normal_mode(max77686, id);
15282ba9 YSB	149	break;
	150	default:
	151	pr_warn("%s: regulator_suspend_mode : 0x%x not supported\n",
	152	rdev->desc->name, mode);
	153	return -EINVAL;
	154	}
	155
3ecf198e	156	ret = regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
68c5d186 KK	157	rdev->desc->enable_mask,
68c5d186 KK	158	val << MAX77686_OPMODE_SHIFT);
3ecf198e AL	159	if (ret)
	160	return ret;
	161
40e72149	162	max77686->opmode[id] = val;
3ecf198e	163	return 0;
15282ba9 YSB	164	}
	165
	166	/* Some LDOs supports LPM-ON/OFF/Normal-ON mode during suspend state */
	167	static int max77686_ldo_set_suspend_mode(struct regulator_dev *rdev,
	168	unsigned int mode)
	169	{
	170	unsigned int val;
	171	struct max77686_data *max77686 = rdev_get_drvdata(rdev);
3307e902	172	int ret, id = rdev_get_id(rdev);
15282ba9 YSB	173
	174	switch (mode) {
	175	case REGULATOR_MODE_STANDBY: /* switch off */
68c5d186	176	val = MAX77686_OFF_PWRREQ;
15282ba9 YSB	177	break;
15282ba9 YSB	178	case REGULATOR_MODE_IDLE: /* ON in LP Mode */
68c5d186	179	val = MAX77686_LDO_LOWPOWER_PWRREQ;
15282ba9 YSB	180	break;
15282ba9 YSB	181	case REGULATOR_MODE_NORMAL: /* ON in Normal Mode */
3307e902	182	val = max77686_map_normal_mode(max77686, id);
15282ba9 YSB	183	break;
	184	default:
	185	pr_warn("%s: regulator_suspend_mode : 0x%x not supported\n",
	186	rdev->desc->name, mode);
	187	return -EINVAL;
	188	}
	189
3ecf198e	190	ret = regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
68c5d186 KK	191	rdev->desc->enable_mask,
68c5d186 KK	192	val << MAX77686_OPMODE_SHIFT);
3ecf198e AL	193	if (ret)
	194	return ret;
	195
3307e902	196	max77686->opmode[id] = val;
3ecf198e	197	return 0;
15282ba9 YSB	198	}
15282ba9 YSB	199
38d34035	200	static int max77686_enable(struct regulator_dev *rdev)
6d2c896b YSB	201	{
6d2c896b YSB	202	struct max77686_data *max77686 = rdev_get_drvdata(rdev);
68c5d186 KK	203	unsigned int shift;
	204	int id = rdev_get_id(rdev);
	205
	206	shift = max77686_get_opmode_shift(id);
6d2c896b	207
78ce6128	208	if (max77686->opmode[id] == MAX77686_OFF_PWRREQ)
3307e902	209	max77686->opmode[id] = max77686_map_normal_mode(max77686, id);
78ce6128	210
6d2c896b YSB	211	return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
6d2c896b YSB	212	rdev->desc->enable_mask,
68c5d186	213	max77686->opmode[id] << shift);
6d2c896b YSB	214	}
6d2c896b YSB	215
3307e902 KK	216	static int max77686_of_parse_cb(struct device_node *np,
	217	const struct regulator_desc *desc,
	218	struct regulator_config *config)
	219	{
	220	struct max77686_data *max77686 = config->driver_data;
d03c63db	221	int ret;
3307e902 KK	222
	223	switch (desc->id) {
	224	case MAX77686_BUCK8:
	225	case MAX77686_BUCK9:
	226	case MAX77686_LDO20 ... MAX77686_LDO22:
0b2ba815 DT	227	config->ena_gpiod = fwnode_gpiod_get_index(
	228	of_fwnode_handle(np),
	229	"maxim,ena",
96392c3d LW	230	0,
	231	GPIOD_OUT_HIGH \| GPIOD_FLAGS_BIT_NONEXCLUSIVE,
	232	"max77686-regulator");
	233	if (IS_ERR(config->ena_gpiod))
	234	config->ena_gpiod = NULL;
3307e902 KK	235	break;
	236	default:
	237	return 0;
	238	}
	239
96392c3d	240	if (config->ena_gpiod) {
c53403a3	241	set_bit(desc->id, max77686->gpio_enabled);
3307e902	242
d03c63db LW	243	ret = regmap_update_bits(config->regmap, desc->enable_reg,
	244	desc->enable_mask,
	245	MAX77686_GPIO_CONTROL);
	246	if (ret) {
	247	gpiod_put(config->ena_gpiod);
	248	config->ena_gpiod = NULL;
	249	}
3307e902 KK	250	}
	251
	252	return 0;
	253	}
	254
3c37d899 AL	255	static const unsigned int max77686_buck_dvs_ramp_table[] = {
	256	13750, 27500, 55000, 100000
	257	};
	258
404826cb	259	static const struct regulator_ops max77686_ops = {
133d4016	260	.list_voltage = regulator_list_voltage_linear,
2e3f7f26	261	.map_voltage = regulator_map_voltage_linear,
133d4016	262	.is_enabled = regulator_is_enabled_regmap,
6d2c896b	263	.enable = max77686_enable,
133d4016 JL	264	.disable = regulator_disable_regmap,
	265	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	266	.set_voltage_sel = regulator_set_voltage_sel_regmap,
852abad2	267	.set_voltage_time_sel = regulator_set_voltage_time_sel,
15282ba9 YSB	268	.set_suspend_mode = max77686_set_suspend_mode,
	269	};
	270
404826cb	271	static const struct regulator_ops max77686_ldo_ops = {
15282ba9 YSB	272	.list_voltage = regulator_list_voltage_linear,
	273	.map_voltage = regulator_map_voltage_linear,
	274	.is_enabled = regulator_is_enabled_regmap,
	275	.enable = max77686_enable,
133d4016 JL	276	.disable = regulator_disable_regmap,
	277	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	278	.set_voltage_sel = regulator_set_voltage_sel_regmap,
852abad2	279	.set_voltage_time_sel = regulator_set_voltage_time_sel,
15282ba9	280	.set_suspend_mode = max77686_ldo_set_suspend_mode,
78ce6128	281	.set_suspend_disable = max77686_set_suspend_disable,
15282ba9 YSB	282	};
15282ba9 YSB	283
404826cb	284	static const struct regulator_ops max77686_buck1_ops = {
15282ba9 YSB	285	.list_voltage = regulator_list_voltage_linear,
	286	.map_voltage = regulator_map_voltage_linear,
	287	.is_enabled = regulator_is_enabled_regmap,
	288	.enable = max77686_enable,
	289	.disable = regulator_disable_regmap,
	290	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	291	.set_voltage_sel = regulator_set_voltage_sel_regmap,
	292	.set_voltage_time_sel = regulator_set_voltage_time_sel,
78ce6128	293	.set_suspend_disable = max77686_set_suspend_disable,
133d4016 JL	294	};
133d4016 JL	295
404826cb	296	static const struct regulator_ops max77686_buck_dvs_ops = {
133d4016	297	.list_voltage = regulator_list_voltage_linear,
2e3f7f26	298	.map_voltage = regulator_map_voltage_linear,
133d4016	299	.is_enabled = regulator_is_enabled_regmap,
6d2c896b	300	.enable = max77686_enable,
133d4016 JL	301	.disable = regulator_disable_regmap,
	302	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	303	.set_voltage_sel = regulator_set_voltage_sel_regmap,
852abad2	304	.set_voltage_time_sel = regulator_set_voltage_time_sel,
3c37d899	305	.set_ramp_delay = regulator_set_ramp_delay_regmap,
78ce6128	306	.set_suspend_disable = max77686_set_suspend_disable,
133d4016 JL	307	};
	308
	309	#define regulator_desc_ldo(num) { \
	310	.name = "LDO"#num, \
04803952 KK	311	.of_match = of_match_ptr("LDO"#num), \
04803952 KK	312	.regulators_node = of_match_ptr("voltage-regulators"), \
3307e902	313	.of_parse_cb = max77686_of_parse_cb, \
133d4016 JL	314	.id = MAX77686_LDO##num, \
	315	.ops = &max77686_ops, \
	316	.type = REGULATOR_VOLTAGE, \
	317	.owner = THIS_MODULE, \
	318	.min_uV = MAX77686_LDO_MINUV, \
	319	.uV_step = MAX77686_LDO_UVSTEP, \
852abad2	320	.ramp_delay = MAX77686_RAMP_DELAY, \
133d4016 JL	321	.n_voltages = MAX77686_VSEL_MASK + 1, \
	322	.vsel_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \
	323	.vsel_mask = MAX77686_VSEL_MASK, \
	324	.enable_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \
	325	.enable_mask = MAX77686_OPMODE_MASK \
	326	<< MAX77686_OPMODE_SHIFT, \
	327	}
15282ba9 YSB	328	#define regulator_desc_lpm_ldo(num) { \
15282ba9 YSB	329	.name = "LDO"#num, \
04803952 KK	330	.of_match = of_match_ptr("LDO"#num), \
04803952 KK	331	.regulators_node = of_match_ptr("voltage-regulators"), \
15282ba9 YSB	332	.id = MAX77686_LDO##num, \
	333	.ops = &max77686_ldo_ops, \
	334	.type = REGULATOR_VOLTAGE, \
	335	.owner = THIS_MODULE, \
	336	.min_uV = MAX77686_LDO_MINUV, \
	337	.uV_step = MAX77686_LDO_UVSTEP, \
	338	.ramp_delay = MAX77686_RAMP_DELAY, \
	339	.n_voltages = MAX77686_VSEL_MASK + 1, \
	340	.vsel_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \
	341	.vsel_mask = MAX77686_VSEL_MASK, \
	342	.enable_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \
	343	.enable_mask = MAX77686_OPMODE_MASK \
	344	<< MAX77686_OPMODE_SHIFT, \
	345	}
133d4016	346	#define regulator_desc_ldo_low(num) { \
15282ba9	347	.name = "LDO"#num, \
04803952 KK	348	.of_match = of_match_ptr("LDO"#num), \
04803952 KK	349	.regulators_node = of_match_ptr("voltage-regulators"), \
15282ba9 YSB	350	.id = MAX77686_LDO##num, \
	351	.ops = &max77686_ldo_ops, \
	352	.type = REGULATOR_VOLTAGE, \
	353	.owner = THIS_MODULE, \
	354	.min_uV = MAX77686_LDO_LOW_MINUV, \
	355	.uV_step = MAX77686_LDO_LOW_UVSTEP, \
	356	.ramp_delay = MAX77686_RAMP_DELAY, \
	357	.n_voltages = MAX77686_VSEL_MASK + 1, \
	358	.vsel_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \
	359	.vsel_mask = MAX77686_VSEL_MASK, \
	360	.enable_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \
	361	.enable_mask = MAX77686_OPMODE_MASK \
	362	<< MAX77686_OPMODE_SHIFT, \
	363	}
	364	#define regulator_desc_ldo1_low(num) { \
133d4016	365	.name = "LDO"#num, \
04803952 KK	366	.of_match = of_match_ptr("LDO"#num), \
04803952 KK	367	.regulators_node = of_match_ptr("voltage-regulators"), \
133d4016 JL	368	.id = MAX77686_LDO##num, \
	369	.ops = &max77686_ops, \
	370	.type = REGULATOR_VOLTAGE, \
	371	.owner = THIS_MODULE, \
	372	.min_uV = MAX77686_LDO_LOW_MINUV, \
	373	.uV_step = MAX77686_LDO_LOW_UVSTEP, \
852abad2	374	.ramp_delay = MAX77686_RAMP_DELAY, \
133d4016 JL	375	.n_voltages = MAX77686_VSEL_MASK + 1, \
	376	.vsel_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \
	377	.vsel_mask = MAX77686_VSEL_MASK, \
	378	.enable_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \
	379	.enable_mask = MAX77686_OPMODE_MASK \
	380	<< MAX77686_OPMODE_SHIFT, \
	381	}
	382	#define regulator_desc_buck(num) { \
	383	.name = "BUCK"#num, \
04803952 KK	384	.of_match = of_match_ptr("BUCK"#num), \
04803952 KK	385	.regulators_node = of_match_ptr("voltage-regulators"), \
3307e902	386	.of_parse_cb = max77686_of_parse_cb, \
133d4016 JL	387	.id = MAX77686_BUCK##num, \
	388	.ops = &max77686_ops, \
	389	.type = REGULATOR_VOLTAGE, \
	390	.owner = THIS_MODULE, \
	391	.min_uV = MAX77686_BUCK_MINUV, \
	392	.uV_step = MAX77686_BUCK_UVSTEP, \
852abad2	393	.ramp_delay = MAX77686_RAMP_DELAY, \
a9597305	394	.enable_time = MAX77686_BUCK_ENABLE_TIME, \
133d4016 JL	395	.n_voltages = MAX77686_VSEL_MASK + 1, \
	396	.vsel_reg = MAX77686_REG_BUCK5OUT + (num - 5) * 2, \
	397	.vsel_mask = MAX77686_VSEL_MASK, \
	398	.enable_reg = MAX77686_REG_BUCK5CTRL + (num - 5) * 2, \
	399	.enable_mask = MAX77686_OPMODE_MASK, \
	400	}
	401	#define regulator_desc_buck1(num) { \
	402	.name = "BUCK"#num, \
04803952 KK	403	.of_match = of_match_ptr("BUCK"#num), \
04803952 KK	404	.regulators_node = of_match_ptr("voltage-regulators"), \
133d4016	405	.id = MAX77686_BUCK##num, \
15282ba9	406	.ops = &max77686_buck1_ops, \
133d4016 JL	407	.type = REGULATOR_VOLTAGE, \
	408	.owner = THIS_MODULE, \
	409	.min_uV = MAX77686_BUCK_MINUV, \
	410	.uV_step = MAX77686_BUCK_UVSTEP, \
852abad2	411	.ramp_delay = MAX77686_RAMP_DELAY, \
a9597305	412	.enable_time = MAX77686_BUCK_ENABLE_TIME, \
133d4016 JL	413	.n_voltages = MAX77686_VSEL_MASK + 1, \
	414	.vsel_reg = MAX77686_REG_BUCK1OUT, \
	415	.vsel_mask = MAX77686_VSEL_MASK, \
	416	.enable_reg = MAX77686_REG_BUCK1CTRL, \
	417	.enable_mask = MAX77686_OPMODE_MASK, \
	418	}
	419	#define regulator_desc_buck_dvs(num) { \
	420	.name = "BUCK"#num, \
04803952 KK	421	.of_match = of_match_ptr("BUCK"#num), \
04803952 KK	422	.regulators_node = of_match_ptr("voltage-regulators"), \
133d4016	423	.id = MAX77686_BUCK##num, \
74adfee5	424	.ops = &max77686_buck_dvs_ops, \
133d4016 JL	425	.type = REGULATOR_VOLTAGE, \
	426	.owner = THIS_MODULE, \
	427	.min_uV = MAX77686_DVS_MINUV, \
	428	.uV_step = MAX77686_DVS_UVSTEP, \
852abad2	429	.ramp_delay = MAX77686_DVS_RAMP_DELAY, \
a9597305	430	.enable_time = MAX77686_DVS_ENABLE_TIME, \
133d4016 JL	431	.n_voltages = MAX77686_DVS_VSEL_MASK + 1, \
	432	.vsel_reg = MAX77686_REG_BUCK2DVS1 + (num - 2) * 10, \
	433	.vsel_mask = MAX77686_DVS_VSEL_MASK, \
	434	.enable_reg = MAX77686_REG_BUCK2CTRL1 + (num - 2) * 10, \
	435	.enable_mask = MAX77686_OPMODE_MASK \
	436	<< MAX77686_OPMODE_BUCK234_SHIFT, \
3c37d899 AL	437	.ramp_reg = MAX77686_REG_BUCK2CTRL1 + (num - 2) * 10, \
	438	.ramp_mask = MAX77686_RAMP_RATE_MASK, \
	439	.ramp_delay_table = max77686_buck_dvs_ramp_table, \
	440	.n_ramp_values = ARRAY_SIZE(max77686_buck_dvs_ramp_table), \
133d4016 JL	441	}
133d4016 JL	442
73dbdf8f	443	static const struct regulator_desc regulators[] = {
15282ba9	444	regulator_desc_ldo1_low(1),
133d4016 JL	445	regulator_desc_ldo_low(2),
	446	regulator_desc_ldo(3),
	447	regulator_desc_ldo(4),
	448	regulator_desc_ldo(5),
	449	regulator_desc_ldo_low(6),
	450	regulator_desc_ldo_low(7),
	451	regulator_desc_ldo_low(8),
	452	regulator_desc_ldo(9),
15282ba9 YSB	453	regulator_desc_lpm_ldo(10),
	454	regulator_desc_lpm_ldo(11),
	455	regulator_desc_lpm_ldo(12),
133d4016	456	regulator_desc_ldo(13),
15282ba9	457	regulator_desc_lpm_ldo(14),
133d4016	458	regulator_desc_ldo_low(15),
15282ba9	459	regulator_desc_lpm_ldo(16),
133d4016 JL	460	regulator_desc_ldo(17),
	461	regulator_desc_ldo(18),
	462	regulator_desc_ldo(19),
	463	regulator_desc_ldo(20),
	464	regulator_desc_ldo(21),
	465	regulator_desc_ldo(22),
	466	regulator_desc_ldo(23),
	467	regulator_desc_ldo(24),
	468	regulator_desc_ldo(25),
	469	regulator_desc_ldo(26),
	470	regulator_desc_buck1(1),
	471	regulator_desc_buck_dvs(2),
	472	regulator_desc_buck_dvs(3),
	473	regulator_desc_buck_dvs(4),
	474	regulator_desc_buck(5),
	475	regulator_desc_buck(6),
	476	regulator_desc_buck(7),
	477	regulator_desc_buck(8),
	478	regulator_desc_buck(9),
	479	};
	480
a5023574	481	static int max77686_pmic_probe(struct platform_device *pdev)
133d4016 JL	482	{
133d4016 JL	483	struct max77686_dev *iodev = dev_get_drvdata(pdev->dev.parent);
133d4016	484	struct max77686_data *max77686;
04803952	485	int i;
c59d2a6b	486	struct regulator_config config = { };
133d4016 JL	487
	488	dev_dbg(&pdev->dev, "%s\n", __func__);
	489
	490	max77686 = devm_kzalloc(&pdev->dev, sizeof(struct max77686_data),
	491	GFP_KERNEL);
	492	if (!max77686)
	493	return -ENOMEM;
	494
96392c3d	495	max77686->dev = &pdev->dev;
04803952	496	config.dev = iodev->dev;
f503071b	497	config.regmap = iodev->regmap;
6d2c896b	498	config.driver_data = max77686;
133d4016 JL	499	platform_set_drvdata(pdev, max77686);
133d4016 JL	500
ab0d1cbe	501	for (i = 0; i < MAX77686_REGULATORS; i++) {
b0c13e80	502	struct regulator_dev *rdev;
eca29da9	503	int id = regulators[i].id;
b0c13e80	504
4524df83	505	max77686->opmode[id] = MAX77686_NORMAL;
b0c13e80	506	rdev = devm_regulator_register(&pdev->dev,
44815b4a	507	&regulators[i], &config);
b0c13e80	508	if (IS_ERR(rdev)) {
04803952	509	int ret = PTR_ERR(rdev);
f503071b	510	dev_err(&pdev->dev,
04803952 KK	511	"regulator init failed for %d: %d\n", i, ret);
04803952 KK	512	return ret;
133d4016	513	}
133d4016	514	}
ab0d1cbe	515
133d4016 JL	516	return 0;
	517	}
	518
	519	static const struct platform_device_id max77686_pmic_id[] = {
	520	{"max77686-pmic", 0},
	521	{ },
	522	};
	523	MODULE_DEVICE_TABLE(platform, max77686_pmic_id);
	524
	525	static struct platform_driver max77686_pmic_driver = {
	526	.driver = {
	527	.name = "max77686-pmic",
259b93b2	528	.probe_type = PROBE_PREFER_ASYNCHRONOUS,
133d4016 JL	529	},
133d4016 JL	530	.probe = max77686_pmic_probe,
133d4016 JL	531	.id_table = max77686_pmic_id,
	532	};
	533
314a8203	534	module_platform_driver(max77686_pmic_driver);
133d4016 JL	535
	536	MODULE_DESCRIPTION("MAXIM 77686 Regulator Driver");
	537	MODULE_AUTHOR("Chiwoong Byun <woong.byun@samsung.com>");
	538	MODULE_LICENSE("GPL");