[deliverable/linux.git] / drivers / regulator / max77686.c

/*
 * max77686.c - Regulator driver for the Maxim 77686
 *
 * Copyright (C) 2012 Samsung Electronics
 * Chiwoong Byun <woong.byun@smasung.com>
 * Jonghwa Lee <jonghwa3.lee@samsung.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * This driver is based on max8997.c
 */

#include <linux/kernel.h>
#include <linux/bug.h>
#include <linux/err.h>
#include <linux/gpio.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_RAMP_DELAY	100000			/* uV/us */
#define MAX77686_DVS_RAMP_DELAY	27500			/* uV/us */
#define MAX77686_DVS_MINUV	600000
#define MAX77686_DVS_UVSTEP	12500

/*
 * 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

enum max77686_ramp_rate {
	RAMP_RATE_13P75MV,
	RAMP_RATE_27P5MV,
	RAMP_RATE_55MV,
	RAMP_RATE_NO_CTRL,	/* 100mV/us */
};

struct max77686_data {
	/* 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;
	}
}

/* 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_NORMAL;
		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;

	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_NORMAL;
		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[rdev_get_id(rdev)] = 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_NORMAL;

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

static int max77686_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
{
	unsigned int ramp_value = RAMP_RATE_NO_CTRL;

	switch (ramp_delay) {
	case 1 ... 13750:
		ramp_value = RAMP_RATE_13P75MV;
		break;
	case 13751 ... 27500:
		ramp_value = RAMP_RATE_27P5MV;
		break;
	case 27501 ... 55000:
		ramp_value = RAMP_RATE_55MV;
		break;
	case 55001 ... 100000:
		break;
	default:
		pr_warn("%s: ramp_delay: %d not supported, setting 100000\n",
			rdev->desc->name, ramp_delay);
	}

	return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
				  MAX77686_RAMP_RATE_MASK, ramp_value << 6);
}

static 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 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 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 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		= max77686_set_ramp_delay,
	.set_suspend_disable	= max77686_set_suspend_disable,
};

#define regulator_desc_ldo(num)		{				\
	.name		= "LDO"#num,					\
	.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,					\
	.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,					\
	.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,					\
	.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,					\
	.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,				\
	.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,					\
	.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,				\
	.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,					\
	.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,			\
	.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,		\
}

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),
};

#ifdef CONFIG_OF
static int max77686_pmic_dt_parse_pdata(struct platform_device *pdev,
					struct max77686_platform_data *pdata)
{
	struct max77686_dev *iodev = dev_get_drvdata(pdev->dev.parent);
	struct device_node *pmic_np, *regulators_np;
	struct max77686_regulator_data *rdata;
	struct of_regulator_match rmatch = { };
	unsigned int i;

	pmic_np = iodev->dev->of_node;
	regulators_np = of_get_child_by_name(pmic_np, "voltage-regulators");
	if (!regulators_np) {
		dev_err(&pdev->dev, "could not find regulators sub-node\n");
		return -EINVAL;
	}

	pdata->num_regulators = ARRAY_SIZE(regulators);
	rdata = devm_kzalloc(&pdev->dev, sizeof(*rdata) *
			     pdata->num_regulators, GFP_KERNEL);
	if (!rdata) {
		of_node_put(regulators_np);
		return -ENOMEM;
	}

	for (i = 0; i < pdata->num_regulators; i++) {
		rmatch.name = regulators[i].name;
		rmatch.init_data = NULL;
		rmatch.of_node = NULL;
		of_regulator_match(&pdev->dev, regulators_np, &rmatch, 1);
		rdata[i].initdata = rmatch.init_data;
		rdata[i].of_node = rmatch.of_node;
	}

	pdata->regulators = rdata;
	of_node_put(regulators_np);

	return 0;
}
#else
static int max77686_pmic_dt_parse_pdata(struct platform_device *pdev,
					struct max77686_platform_data *pdata)
{
	return 0;
}
#endif /* CONFIG_OF */

static int max77686_pmic_probe(struct platform_device *pdev)
{
	struct max77686_dev *iodev = dev_get_drvdata(pdev->dev.parent);
	struct max77686_platform_data *pdata = dev_get_platdata(iodev->dev);
	struct max77686_data *max77686;
	int i, ret = 0;
	struct regulator_config config = { };

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

	if (!pdata) {
		dev_err(&pdev->dev, "no platform data found for regulator\n");
		return -ENODEV;
	}

	if (iodev->dev->of_node) {
		ret = max77686_pmic_dt_parse_pdata(pdev, pdata);
		if (ret)
			return ret;
	}

	if (pdata->num_regulators != MAX77686_REGULATORS) {
		dev_err(&pdev->dev,
			"Invalid initial data for regulator's initialiation\n");
		return -EINVAL;
	}

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

	config.dev = &pdev->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;

		config.init_data = pdata->regulators[i].initdata;
		config.of_node = pdata->regulators[i].of_node;

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

	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",
		.owner = THIS_MODULE,
	},
	.probe = max77686_pmic_probe,
	.id_table = max77686_pmic_id,
};

static int __init max77686_pmic_init(void)
{
	return platform_driver_register(&max77686_pmic_driver);
}
subsys_initcall(max77686_pmic_init);

static void __exit max77686_pmic_cleanup(void)
{
	platform_driver_unregister(&max77686_pmic_driver);
}
module_exit(max77686_pmic_cleanup);

MODULE_DESCRIPTION("MAXIM 77686 Regulator Driver");
MODULE_AUTHOR("Chiwoong Byun <woong.byun@samsung.com>");
MODULE_LICENSE("GPL");
Commit	Line	Data
133d4016 JL	1	/*
	2	* max77686.c - Regulator driver for the Maxim 77686
	3	*
	4	* Copyright (C) 2012 Samsung Electronics
	5	* Chiwoong Byun <woong.byun@smasung.com>
	6	* Jonghwa Lee <jonghwa3.lee@samsung.com>
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation; either version 2 of the License, or
	11	* (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program; if not, write to the Free Software
	20	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	21	*
	22	* This driver is based on max8997.c
	23	*/
	24
	25	#include <linux/kernel.h>
	26	#include <linux/bug.h>
133d4016 JL	27	#include <linux/err.h>
	28	#include <linux/gpio.h>
	29	#include <linux/slab.h>
	30	#include <linux/platform_device.h>
	31	#include <linux/regulator/driver.h>
	32	#include <linux/regulator/machine.h>
4706fcab	33	#include <linux/regulator/of_regulator.h>
133d4016 JL	34	#include <linux/mfd/max77686.h>
	35	#include <linux/mfd/max77686-private.h>
	36
	37	#define MAX77686_LDO_MINUV 800000
	38	#define MAX77686_LDO_UVSTEP 50000
	39	#define MAX77686_LDO_LOW_MINUV 800000
	40	#define MAX77686_LDO_LOW_UVSTEP 25000
	41	#define MAX77686_BUCK_MINUV 750000
	42	#define MAX77686_BUCK_UVSTEP 50000
852abad2 YSB	43	#define MAX77686_RAMP_DELAY 100000 /* uV/us */
852abad2 YSB	44	#define MAX77686_DVS_RAMP_DELAY 27500 /* uV/us */
133d4016 JL	45	#define MAX77686_DVS_MINUV 600000
	46	#define MAX77686_DVS_UVSTEP 12500
	47
7636f19c KK	48	/*
	49	* Values used for configuring LDOs and bucks.
	50	* Forcing low power mode: LDO1, 3-5, 9, 13, 17-26
	51	*/
	52	#define MAX77686_LDO_LOWPOWER 0x1
	53	/*
	54	* On/off controlled by PWRREQ:
	55	* - LDO2, 6-8, 10-12, 14-16
	56	* - buck[1234]
	57	*/
	58	#define MAX77686_OFF_PWRREQ 0x1
	59	/* Low power mode controlled by PWRREQ: All LDOs */
	60	#define MAX77686_LDO_LOWPOWER_PWRREQ 0x2
	61	/* Forcing low power mode: buck[234] */
	62	#define MAX77686_BUCK_LOWPOWER 0x2
	63	#define MAX77686_NORMAL 0x3
	64
133d4016 JL	65	#define MAX77686_OPMODE_SHIFT 6
	66	#define MAX77686_OPMODE_BUCK234_SHIFT 4
	67	#define MAX77686_OPMODE_MASK 0x3
	68
	69	#define MAX77686_VSEL_MASK 0x3F
	70	#define MAX77686_DVS_VSEL_MASK 0xFF
	71
	72	#define MAX77686_RAMP_RATE_MASK 0xC0
	73
	74	#define MAX77686_REGULATORS MAX77686_REG_MAX
	75	#define MAX77686_LDOS 26
	76
	77	enum max77686_ramp_rate {
	78	RAMP_RATE_13P75MV,
	79	RAMP_RATE_27P5MV,
	80	RAMP_RATE_55MV,
	81	RAMP_RATE_NO_CTRL, /* 100mV/us */
	82	};
	83
	84	struct max77686_data {
eca29da9	85	/* Array indexed by regulator id */
6d2c896b	86	unsigned int opmode[MAX77686_REGULATORS];
133d4016 JL	87	};
133d4016 JL	88
68c5d186 KK	89	static unsigned int max77686_get_opmode_shift(int id)
	90	{
	91	switch (id) {
	92	case MAX77686_BUCK1:
	93	case MAX77686_BUCK5 ... MAX77686_BUCK9:
	94	return 0;
	95	case MAX77686_BUCK2 ... MAX77686_BUCK4:
	96	return MAX77686_OPMODE_BUCK234_SHIFT;
	97	default:
	98	/* all LDOs */
	99	return MAX77686_OPMODE_SHIFT;
	100	}
	101	}
	102
78ce6128 KK	103	/* Some BUCKs and LDOs supports Normal[ON/OFF] mode during suspend */
78ce6128 KK	104	static int max77686_set_suspend_disable(struct regulator_dev *rdev)
15282ba9	105	{
68c5d186	106	unsigned int val, shift;
15282ba9	107	struct max77686_data *max77686 = rdev_get_drvdata(rdev);
3ecf198e	108	int ret, id = rdev_get_id(rdev);
15282ba9	109
68c5d186 KK	110	shift = max77686_get_opmode_shift(id);
68c5d186 KK	111	val = MAX77686_OFF_PWRREQ;
15282ba9	112
3ecf198e	113	ret = regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
68c5d186	114	rdev->desc->enable_mask, val << shift);
3ecf198e AL	115	if (ret)
	116	return ret;
	117
40e72149	118	max77686->opmode[id] = val;
3ecf198e	119	return 0;
15282ba9 YSB	120	}
	121
	122	/* Some LDOs supports [LPM/Normal]ON mode during suspend state */
	123	static int max77686_set_suspend_mode(struct regulator_dev *rdev,
	124	unsigned int mode)
	125	{
	126	struct max77686_data *max77686 = rdev_get_drvdata(rdev);
	127	unsigned int val;
3ecf198e	128	int ret, id = rdev_get_id(rdev);
15282ba9 YSB	129
15282ba9 YSB	130	/* BUCK[5-9] doesn't support this feature */
40e72149	131	if (id >= MAX77686_BUCK5)
15282ba9 YSB	132	return 0;
	133
	134	switch (mode) {
	135	case REGULATOR_MODE_IDLE: /* ON in LP Mode */
68c5d186	136	val = MAX77686_LDO_LOWPOWER_PWRREQ;
15282ba9 YSB	137	break;
15282ba9 YSB	138	case REGULATOR_MODE_NORMAL: /* ON in Normal Mode */
68c5d186	139	val = MAX77686_NORMAL;
15282ba9 YSB	140	break;
	141	default:
	142	pr_warn("%s: regulator_suspend_mode : 0x%x not supported\n",
	143	rdev->desc->name, mode);
	144	return -EINVAL;
	145	}
	146
3ecf198e	147	ret = regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
68c5d186 KK	148	rdev->desc->enable_mask,
68c5d186 KK	149	val << MAX77686_OPMODE_SHIFT);
3ecf198e AL	150	if (ret)
	151	return ret;
	152
40e72149	153	max77686->opmode[id] = val;
3ecf198e	154	return 0;
15282ba9 YSB	155	}
	156
	157	/* Some LDOs supports LPM-ON/OFF/Normal-ON mode during suspend state */
	158	static int max77686_ldo_set_suspend_mode(struct regulator_dev *rdev,
	159	unsigned int mode)
	160	{
	161	unsigned int val;
	162	struct max77686_data *max77686 = rdev_get_drvdata(rdev);
3ecf198e	163	int ret;
15282ba9 YSB	164
	165	switch (mode) {
	166	case REGULATOR_MODE_STANDBY: /* switch off */
68c5d186	167	val = MAX77686_OFF_PWRREQ;
15282ba9 YSB	168	break;
15282ba9 YSB	169	case REGULATOR_MODE_IDLE: /* ON in LP Mode */
68c5d186	170	val = MAX77686_LDO_LOWPOWER_PWRREQ;
15282ba9 YSB	171	break;
15282ba9 YSB	172	case REGULATOR_MODE_NORMAL: /* ON in Normal Mode */
68c5d186	173	val = MAX77686_NORMAL;
15282ba9 YSB	174	break;
	175	default:
	176	pr_warn("%s: regulator_suspend_mode : 0x%x not supported\n",
	177	rdev->desc->name, mode);
	178	return -EINVAL;
	179	}
	180
3ecf198e	181	ret = regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
68c5d186 KK	182	rdev->desc->enable_mask,
68c5d186 KK	183	val << MAX77686_OPMODE_SHIFT);
3ecf198e AL	184	if (ret)
	185	return ret;
	186
40e72149	187	max77686->opmode[rdev_get_id(rdev)] = val;
3ecf198e	188	return 0;
15282ba9 YSB	189	}
15282ba9 YSB	190
38d34035	191	static int max77686_enable(struct regulator_dev *rdev)
6d2c896b YSB	192	{
6d2c896b YSB	193	struct max77686_data *max77686 = rdev_get_drvdata(rdev);
68c5d186 KK	194	unsigned int shift;
	195	int id = rdev_get_id(rdev);
	196
	197	shift = max77686_get_opmode_shift(id);
6d2c896b	198
78ce6128 KK	199	if (max77686->opmode[id] == MAX77686_OFF_PWRREQ)
	200	max77686->opmode[id] = MAX77686_NORMAL;
	201
6d2c896b YSB	202	return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
6d2c896b YSB	203	rdev->desc->enable_mask,
68c5d186	204	max77686->opmode[id] << shift);
6d2c896b YSB	205	}
6d2c896b YSB	206
f503071b YSB	207	static int max77686_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
	208	{
	209	unsigned int ramp_value = RAMP_RATE_NO_CTRL;
	210
	211	switch (ramp_delay) {
	212	case 1 ... 13750:
	213	ramp_value = RAMP_RATE_13P75MV;
	214	break;
	215	case 13751 ... 27500:
	216	ramp_value = RAMP_RATE_27P5MV;
	217	break;
	218	case 27501 ... 55000:
	219	ramp_value = RAMP_RATE_55MV;
	220	break;
	221	case 55001 ... 100000:
	222	break;
	223	default:
	224	pr_warn("%s: ramp_delay: %d not supported, setting 100000\n",
	225	rdev->desc->name, ramp_delay);
	226	}
	227
	228	return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
	229	MAX77686_RAMP_RATE_MASK, ramp_value << 6);
	230	}
	231
133d4016 JL	232	static struct regulator_ops max77686_ops = {
133d4016 JL	233	.list_voltage = regulator_list_voltage_linear,
2e3f7f26	234	.map_voltage = regulator_map_voltage_linear,
133d4016	235	.is_enabled = regulator_is_enabled_regmap,
6d2c896b	236	.enable = max77686_enable,
133d4016 JL	237	.disable = regulator_disable_regmap,
	238	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	239	.set_voltage_sel = regulator_set_voltage_sel_regmap,
852abad2	240	.set_voltage_time_sel = regulator_set_voltage_time_sel,
15282ba9 YSB	241	.set_suspend_mode = max77686_set_suspend_mode,
	242	};
	243
	244	static struct regulator_ops max77686_ldo_ops = {
	245	.list_voltage = regulator_list_voltage_linear,
	246	.map_voltage = regulator_map_voltage_linear,
	247	.is_enabled = regulator_is_enabled_regmap,
	248	.enable = max77686_enable,
133d4016 JL	249	.disable = regulator_disable_regmap,
	250	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	251	.set_voltage_sel = regulator_set_voltage_sel_regmap,
852abad2	252	.set_voltage_time_sel = regulator_set_voltage_time_sel,
15282ba9	253	.set_suspend_mode = max77686_ldo_set_suspend_mode,
78ce6128	254	.set_suspend_disable = max77686_set_suspend_disable,
15282ba9 YSB	255	};
	256
	257	static struct regulator_ops max77686_buck1_ops = {
	258	.list_voltage = regulator_list_voltage_linear,
	259	.map_voltage = regulator_map_voltage_linear,
	260	.is_enabled = regulator_is_enabled_regmap,
	261	.enable = max77686_enable,
	262	.disable = regulator_disable_regmap,
	263	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	264	.set_voltage_sel = regulator_set_voltage_sel_regmap,
	265	.set_voltage_time_sel = regulator_set_voltage_time_sel,
78ce6128	266	.set_suspend_disable = max77686_set_suspend_disable,
133d4016 JL	267	};
	268
	269	static struct regulator_ops max77686_buck_dvs_ops = {
	270	.list_voltage = regulator_list_voltage_linear,
2e3f7f26	271	.map_voltage = regulator_map_voltage_linear,
133d4016	272	.is_enabled = regulator_is_enabled_regmap,
6d2c896b	273	.enable = max77686_enable,
133d4016 JL	274	.disable = regulator_disable_regmap,
	275	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	276	.set_voltage_sel = regulator_set_voltage_sel_regmap,
852abad2	277	.set_voltage_time_sel = regulator_set_voltage_time_sel,
f503071b	278	.set_ramp_delay = max77686_set_ramp_delay,
78ce6128	279	.set_suspend_disable = max77686_set_suspend_disable,
133d4016 JL	280	};
	281
	282	#define regulator_desc_ldo(num) { \
	283	.name = "LDO"#num, \
	284	.id = MAX77686_LDO##num, \
	285	.ops = &max77686_ops, \
	286	.type = REGULATOR_VOLTAGE, \
	287	.owner = THIS_MODULE, \
	288	.min_uV = MAX77686_LDO_MINUV, \
	289	.uV_step = MAX77686_LDO_UVSTEP, \
852abad2	290	.ramp_delay = MAX77686_RAMP_DELAY, \
133d4016 JL	291	.n_voltages = MAX77686_VSEL_MASK + 1, \
	292	.vsel_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \
	293	.vsel_mask = MAX77686_VSEL_MASK, \
	294	.enable_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \
	295	.enable_mask = MAX77686_OPMODE_MASK \
	296	<< MAX77686_OPMODE_SHIFT, \
	297	}
15282ba9 YSB	298	#define regulator_desc_lpm_ldo(num) { \
	299	.name = "LDO"#num, \
	300	.id = MAX77686_LDO##num, \
	301	.ops = &max77686_ldo_ops, \
	302	.type = REGULATOR_VOLTAGE, \
	303	.owner = THIS_MODULE, \
	304	.min_uV = MAX77686_LDO_MINUV, \
	305	.uV_step = MAX77686_LDO_UVSTEP, \
	306	.ramp_delay = MAX77686_RAMP_DELAY, \
	307	.n_voltages = MAX77686_VSEL_MASK + 1, \
	308	.vsel_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \
	309	.vsel_mask = MAX77686_VSEL_MASK, \
	310	.enable_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \
	311	.enable_mask = MAX77686_OPMODE_MASK \
	312	<< MAX77686_OPMODE_SHIFT, \
	313	}
133d4016	314	#define regulator_desc_ldo_low(num) { \
15282ba9 YSB	315	.name = "LDO"#num, \
	316	.id = MAX77686_LDO##num, \
	317	.ops = &max77686_ldo_ops, \
	318	.type = REGULATOR_VOLTAGE, \
	319	.owner = THIS_MODULE, \
	320	.min_uV = MAX77686_LDO_LOW_MINUV, \
	321	.uV_step = MAX77686_LDO_LOW_UVSTEP, \
	322	.ramp_delay = MAX77686_RAMP_DELAY, \
	323	.n_voltages = MAX77686_VSEL_MASK + 1, \
	324	.vsel_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \
	325	.vsel_mask = MAX77686_VSEL_MASK, \
	326	.enable_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \
	327	.enable_mask = MAX77686_OPMODE_MASK \
	328	<< MAX77686_OPMODE_SHIFT, \
	329	}
	330	#define regulator_desc_ldo1_low(num) { \
133d4016 JL	331	.name = "LDO"#num, \
	332	.id = MAX77686_LDO##num, \
	333	.ops = &max77686_ops, \
	334	.type = REGULATOR_VOLTAGE, \
	335	.owner = THIS_MODULE, \
	336	.min_uV = MAX77686_LDO_LOW_MINUV, \
	337	.uV_step = MAX77686_LDO_LOW_UVSTEP, \
852abad2	338	.ramp_delay = MAX77686_RAMP_DELAY, \
133d4016 JL	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	}
	346	#define regulator_desc_buck(num) { \
	347	.name = "BUCK"#num, \
	348	.id = MAX77686_BUCK##num, \
	349	.ops = &max77686_ops, \
	350	.type = REGULATOR_VOLTAGE, \
	351	.owner = THIS_MODULE, \
	352	.min_uV = MAX77686_BUCK_MINUV, \
	353	.uV_step = MAX77686_BUCK_UVSTEP, \
852abad2	354	.ramp_delay = MAX77686_RAMP_DELAY, \
133d4016 JL	355	.n_voltages = MAX77686_VSEL_MASK + 1, \
	356	.vsel_reg = MAX77686_REG_BUCK5OUT + (num - 5) * 2, \
	357	.vsel_mask = MAX77686_VSEL_MASK, \
	358	.enable_reg = MAX77686_REG_BUCK5CTRL + (num - 5) * 2, \
	359	.enable_mask = MAX77686_OPMODE_MASK, \
	360	}
	361	#define regulator_desc_buck1(num) { \
	362	.name = "BUCK"#num, \
	363	.id = MAX77686_BUCK##num, \
15282ba9	364	.ops = &max77686_buck1_ops, \
133d4016 JL	365	.type = REGULATOR_VOLTAGE, \
	366	.owner = THIS_MODULE, \
	367	.min_uV = MAX77686_BUCK_MINUV, \
	368	.uV_step = MAX77686_BUCK_UVSTEP, \
852abad2	369	.ramp_delay = MAX77686_RAMP_DELAY, \
133d4016 JL	370	.n_voltages = MAX77686_VSEL_MASK + 1, \
	371	.vsel_reg = MAX77686_REG_BUCK1OUT, \
	372	.vsel_mask = MAX77686_VSEL_MASK, \
	373	.enable_reg = MAX77686_REG_BUCK1CTRL, \
	374	.enable_mask = MAX77686_OPMODE_MASK, \
	375	}
	376	#define regulator_desc_buck_dvs(num) { \
	377	.name = "BUCK"#num, \
	378	.id = MAX77686_BUCK##num, \
74adfee5	379	.ops = &max77686_buck_dvs_ops, \
133d4016 JL	380	.type = REGULATOR_VOLTAGE, \
	381	.owner = THIS_MODULE, \
	382	.min_uV = MAX77686_DVS_MINUV, \
	383	.uV_step = MAX77686_DVS_UVSTEP, \
852abad2	384	.ramp_delay = MAX77686_DVS_RAMP_DELAY, \
133d4016 JL	385	.n_voltages = MAX77686_DVS_VSEL_MASK + 1, \
	386	.vsel_reg = MAX77686_REG_BUCK2DVS1 + (num - 2) * 10, \
	387	.vsel_mask = MAX77686_DVS_VSEL_MASK, \
	388	.enable_reg = MAX77686_REG_BUCK2CTRL1 + (num - 2) * 10, \
	389	.enable_mask = MAX77686_OPMODE_MASK \
	390	<< MAX77686_OPMODE_BUCK234_SHIFT, \
	391	}
	392
73dbdf8f	393	static const struct regulator_desc regulators[] = {
15282ba9	394	regulator_desc_ldo1_low(1),
133d4016 JL	395	regulator_desc_ldo_low(2),
	396	regulator_desc_ldo(3),
	397	regulator_desc_ldo(4),
	398	regulator_desc_ldo(5),
	399	regulator_desc_ldo_low(6),
	400	regulator_desc_ldo_low(7),
	401	regulator_desc_ldo_low(8),
	402	regulator_desc_ldo(9),
15282ba9 YSB	403	regulator_desc_lpm_ldo(10),
	404	regulator_desc_lpm_ldo(11),
	405	regulator_desc_lpm_ldo(12),
133d4016	406	regulator_desc_ldo(13),
15282ba9	407	regulator_desc_lpm_ldo(14),
133d4016	408	regulator_desc_ldo_low(15),
15282ba9	409	regulator_desc_lpm_ldo(16),
133d4016 JL	410	regulator_desc_ldo(17),
	411	regulator_desc_ldo(18),
	412	regulator_desc_ldo(19),
	413	regulator_desc_ldo(20),
	414	regulator_desc_ldo(21),
	415	regulator_desc_ldo(22),
	416	regulator_desc_ldo(23),
	417	regulator_desc_ldo(24),
	418	regulator_desc_ldo(25),
	419	regulator_desc_ldo(26),
	420	regulator_desc_buck1(1),
	421	regulator_desc_buck_dvs(2),
	422	regulator_desc_buck_dvs(3),
	423	regulator_desc_buck_dvs(4),
	424	regulator_desc_buck(5),
	425	regulator_desc_buck(6),
	426	regulator_desc_buck(7),
	427	regulator_desc_buck(8),
	428	regulator_desc_buck(9),
	429	};
	430
4706fcab	431	#ifdef CONFIG_OF
b19f5758	432	static int max77686_pmic_dt_parse_pdata(struct platform_device *pdev,
4706fcab YSB	433	struct max77686_platform_data *pdata)
4706fcab YSB	434	{
b19f5758	435	struct max77686_dev *iodev = dev_get_drvdata(pdev->dev.parent);
4706fcab YSB	436	struct device_node pmic_np, regulators_np;
4706fcab YSB	437	struct max77686_regulator_data *rdata;
050cf85c	438	struct of_regulator_match rmatch = { };
4706fcab YSB	439	unsigned int i;
	440
	441	pmic_np = iodev->dev->of_node;
398a6616	442	regulators_np = of_get_child_by_name(pmic_np, "voltage-regulators");
4706fcab	443	if (!regulators_np) {
b19f5758	444	dev_err(&pdev->dev, "could not find regulators sub-node\n");
4706fcab YSB	445	return -EINVAL;
	446	}
	447
	448	pdata->num_regulators = ARRAY_SIZE(regulators);
b19f5758	449	rdata = devm_kzalloc(&pdev->dev, sizeof(rdata)
4706fcab YSB	450	pdata->num_regulators, GFP_KERNEL);
4706fcab YSB	451	if (!rdata) {
da0ee72d	452	of_node_put(regulators_np);
4706fcab YSB	453	return -ENOMEM;
	454	}
	455
	456	for (i = 0; i < pdata->num_regulators; i++) {
	457	rmatch.name = regulators[i].name;
	458	rmatch.init_data = NULL;
d1ef065d	459	rmatch.of_node = NULL;
b19f5758	460	of_regulator_match(&pdev->dev, regulators_np, &rmatch, 1);
4706fcab	461	rdata[i].initdata = rmatch.init_data;
2c58e266	462	rdata[i].of_node = rmatch.of_node;
4706fcab YSB	463	}
	464
	465	pdata->regulators = rdata;
da0ee72d	466	of_node_put(regulators_np);
4706fcab YSB	467
	468	return 0;
	469	}
	470	#else
b19f5758	471	static int max77686_pmic_dt_parse_pdata(struct platform_device *pdev,
4706fcab YSB	472	struct max77686_platform_data *pdata)
	473	{
	474	return 0;
	475	}
	476	#endif /* CONFIG_OF */
	477
a5023574	478	static int max77686_pmic_probe(struct platform_device *pdev)
133d4016 JL	479	{
	480	struct max77686_dev *iodev = dev_get_drvdata(pdev->dev.parent);
	481	struct max77686_platform_data *pdata = dev_get_platdata(iodev->dev);
133d4016	482	struct max77686_data *max77686;
cb44cdea	483	int i, ret = 0;
c59d2a6b	484	struct regulator_config config = { };
133d4016 JL	485
	486	dev_dbg(&pdev->dev, "%s\n", __func__);
	487
4706fcab YSB	488	if (!pdata) {
	489	dev_err(&pdev->dev, "no platform data found for regulator\n");
	490	return -ENODEV;
	491	}
	492
	493	if (iodev->dev->of_node) {
b19f5758	494	ret = max77686_pmic_dt_parse_pdata(pdev, pdata);
4706fcab YSB	495	if (ret)
	496	return ret;
	497	}
	498
	499	if (pdata->num_regulators != MAX77686_REGULATORS) {
ab0d1cbe AL	500	dev_err(&pdev->dev,
	501	"Invalid initial data for regulator's initialiation\n");
	502	return -EINVAL;
	503	}
	504
133d4016 JL	505	max77686 = devm_kzalloc(&pdev->dev, sizeof(struct max77686_data),
	506	GFP_KERNEL);
	507	if (!max77686)
	508	return -ENOMEM;
	509
f503071b YSB	510	config.dev = &pdev->dev;
f503071b YSB	511	config.regmap = iodev->regmap;
6d2c896b	512	config.driver_data = max77686;
133d4016 JL	513	platform_set_drvdata(pdev, max77686);
133d4016 JL	514
ab0d1cbe	515	for (i = 0; i < MAX77686_REGULATORS; i++) {
b0c13e80	516	struct regulator_dev *rdev;
eca29da9	517	int id = regulators[i].id;
b0c13e80	518
ab0d1cbe	519	config.init_data = pdata->regulators[i].initdata;
2c58e266	520	config.of_node = pdata->regulators[i].of_node;
133d4016	521
4524df83	522	max77686->opmode[id] = MAX77686_NORMAL;
b0c13e80	523	rdev = devm_regulator_register(&pdev->dev,
44815b4a	524	&regulators[i], &config);
b0c13e80	525	if (IS_ERR(rdev)) {
f503071b	526	dev_err(&pdev->dev,
133d4016	527	"regulator init failed for %d\n", i);
b0c13e80	528	return PTR_ERR(rdev);
133d4016	529	}
133d4016	530	}
ab0d1cbe	531
133d4016 JL	532	return 0;
	533	}
	534
	535	static const struct platform_device_id max77686_pmic_id[] = {
	536	{"max77686-pmic", 0},
	537	{ },
	538	};
	539	MODULE_DEVICE_TABLE(platform, max77686_pmic_id);
	540
	541	static struct platform_driver max77686_pmic_driver = {
	542	.driver = {
	543	.name = "max77686-pmic",
	544	.owner = THIS_MODULE,
	545	},
	546	.probe = max77686_pmic_probe,
133d4016 JL	547	.id_table = max77686_pmic_id,
	548	};
	549
	550	static int __init max77686_pmic_init(void)
	551	{
	552	return platform_driver_register(&max77686_pmic_driver);
	553	}
	554	subsys_initcall(max77686_pmic_init);
	555
	556	static void __exit max77686_pmic_cleanup(void)
	557	{
	558	platform_driver_unregister(&max77686_pmic_driver);
	559	}
	560	module_exit(max77686_pmic_cleanup);
	561
	562	MODULE_DESCRIPTION("MAXIM 77686 Regulator Driver");
	563	MODULE_AUTHOR("Chiwoong Byun <woong.byun@samsung.com>");
	564	MODULE_LICENSE("GPL");