[mirror_ubuntu-hirsute-kernel.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 {
	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;

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

		max77686->opmode[i] = regulators[i].enable_mask >>
						max77686_get_opmode_shift(i);
		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 {
6d2c896b	85	unsigned int opmode[MAX77686_REGULATORS];
133d4016 JL	86	};
133d4016 JL	87
68c5d186 KK	88	static unsigned int max77686_get_opmode_shift(int id)
	89	{
	90	switch (id) {
	91	case MAX77686_BUCK1:
	92	case MAX77686_BUCK5 ... MAX77686_BUCK9:
	93	return 0;
	94	case MAX77686_BUCK2 ... MAX77686_BUCK4:
	95	return MAX77686_OPMODE_BUCK234_SHIFT;
	96	default:
	97	/* all LDOs */
	98	return MAX77686_OPMODE_SHIFT;
	99	}
	100	}
	101
78ce6128 KK	102	/* Some BUCKs and LDOs supports Normal[ON/OFF] mode during suspend */
78ce6128 KK	103	static int max77686_set_suspend_disable(struct regulator_dev *rdev)
15282ba9	104	{
68c5d186	105	unsigned int val, shift;
15282ba9	106	struct max77686_data *max77686 = rdev_get_drvdata(rdev);
3ecf198e	107	int ret, id = rdev_get_id(rdev);
15282ba9	108
68c5d186 KK	109	shift = max77686_get_opmode_shift(id);
68c5d186 KK	110	val = MAX77686_OFF_PWRREQ;
15282ba9	111
3ecf198e	112	ret = regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
68c5d186	113	rdev->desc->enable_mask, val << shift);
3ecf198e AL	114	if (ret)
	115	return ret;
	116
40e72149	117	max77686->opmode[id] = val;
3ecf198e	118	return 0;
15282ba9 YSB	119	}
	120
	121	/* Some LDOs supports [LPM/Normal]ON mode during suspend state */
	122	static int max77686_set_suspend_mode(struct regulator_dev *rdev,
	123	unsigned int mode)
	124	{
	125	struct max77686_data *max77686 = rdev_get_drvdata(rdev);
	126	unsigned int val;
3ecf198e	127	int ret, id = rdev_get_id(rdev);
15282ba9 YSB	128
15282ba9 YSB	129	/* BUCK[5-9] doesn't support this feature */
40e72149	130	if (id >= MAX77686_BUCK5)
15282ba9 YSB	131	return 0;
	132
	133	switch (mode) {
	134	case REGULATOR_MODE_IDLE: /* ON in LP Mode */
68c5d186	135	val = MAX77686_LDO_LOWPOWER_PWRREQ;
15282ba9 YSB	136	break;
15282ba9 YSB	137	case REGULATOR_MODE_NORMAL: /* ON in Normal Mode */
68c5d186	138	val = MAX77686_NORMAL;
15282ba9 YSB	139	break;
	140	default:
	141	pr_warn("%s: regulator_suspend_mode : 0x%x not supported\n",
	142	rdev->desc->name, mode);
	143	return -EINVAL;
	144	}
	145
3ecf198e	146	ret = regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
68c5d186 KK	147	rdev->desc->enable_mask,
68c5d186 KK	148	val << MAX77686_OPMODE_SHIFT);
3ecf198e AL	149	if (ret)
	150	return ret;
	151
40e72149	152	max77686->opmode[id] = val;
3ecf198e	153	return 0;
15282ba9 YSB	154	}
	155
	156	/* Some LDOs supports LPM-ON/OFF/Normal-ON mode during suspend state */
	157	static int max77686_ldo_set_suspend_mode(struct regulator_dev *rdev,
	158	unsigned int mode)
	159	{
	160	unsigned int val;
	161	struct max77686_data *max77686 = rdev_get_drvdata(rdev);
3ecf198e	162	int ret;
15282ba9 YSB	163
	164	switch (mode) {
	165	case REGULATOR_MODE_STANDBY: /* switch off */
68c5d186	166	val = MAX77686_OFF_PWRREQ;
15282ba9 YSB	167	break;
15282ba9 YSB	168	case REGULATOR_MODE_IDLE: /* ON in LP Mode */
68c5d186	169	val = MAX77686_LDO_LOWPOWER_PWRREQ;
15282ba9 YSB	170	break;
15282ba9 YSB	171	case REGULATOR_MODE_NORMAL: /* ON in Normal Mode */
68c5d186	172	val = MAX77686_NORMAL;
15282ba9 YSB	173	break;
	174	default:
	175	pr_warn("%s: regulator_suspend_mode : 0x%x not supported\n",
	176	rdev->desc->name, mode);
	177	return -EINVAL;
	178	}
	179
3ecf198e	180	ret = regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
68c5d186 KK	181	rdev->desc->enable_mask,
68c5d186 KK	182	val << MAX77686_OPMODE_SHIFT);
3ecf198e AL	183	if (ret)
	184	return ret;
	185
40e72149	186	max77686->opmode[rdev_get_id(rdev)] = val;
3ecf198e	187	return 0;
15282ba9 YSB	188	}
15282ba9 YSB	189
38d34035	190	static int max77686_enable(struct regulator_dev *rdev)
6d2c896b YSB	191	{
6d2c896b YSB	192	struct max77686_data *max77686 = rdev_get_drvdata(rdev);
68c5d186 KK	193	unsigned int shift;
	194	int id = rdev_get_id(rdev);
	195
	196	shift = max77686_get_opmode_shift(id);
6d2c896b	197
78ce6128 KK	198	if (max77686->opmode[id] == MAX77686_OFF_PWRREQ)
	199	max77686->opmode[id] = MAX77686_NORMAL;
	200
6d2c896b YSB	201	return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
6d2c896b YSB	202	rdev->desc->enable_mask,
68c5d186	203	max77686->opmode[id] << shift);
6d2c896b YSB	204	}
6d2c896b YSB	205
f503071b YSB	206	static int max77686_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
	207	{
	208	unsigned int ramp_value = RAMP_RATE_NO_CTRL;
	209
	210	switch (ramp_delay) {
	211	case 1 ... 13750:
	212	ramp_value = RAMP_RATE_13P75MV;
	213	break;
	214	case 13751 ... 27500:
	215	ramp_value = RAMP_RATE_27P5MV;
	216	break;
	217	case 27501 ... 55000:
	218	ramp_value = RAMP_RATE_55MV;
	219	break;
	220	case 55001 ... 100000:
	221	break;
	222	default:
	223	pr_warn("%s: ramp_delay: %d not supported, setting 100000\n",
	224	rdev->desc->name, ramp_delay);
	225	}
	226
	227	return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
	228	MAX77686_RAMP_RATE_MASK, ramp_value << 6);
	229	}
	230
133d4016 JL	231	static struct regulator_ops max77686_ops = {
133d4016 JL	232	.list_voltage = regulator_list_voltage_linear,
2e3f7f26	233	.map_voltage = regulator_map_voltage_linear,
133d4016	234	.is_enabled = regulator_is_enabled_regmap,
6d2c896b	235	.enable = max77686_enable,
133d4016 JL	236	.disable = regulator_disable_regmap,
	237	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	238	.set_voltage_sel = regulator_set_voltage_sel_regmap,
852abad2	239	.set_voltage_time_sel = regulator_set_voltage_time_sel,
15282ba9 YSB	240	.set_suspend_mode = max77686_set_suspend_mode,
	241	};
	242
	243	static struct regulator_ops max77686_ldo_ops = {
	244	.list_voltage = regulator_list_voltage_linear,
	245	.map_voltage = regulator_map_voltage_linear,
	246	.is_enabled = regulator_is_enabled_regmap,
	247	.enable = max77686_enable,
133d4016 JL	248	.disable = regulator_disable_regmap,
	249	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	250	.set_voltage_sel = regulator_set_voltage_sel_regmap,
852abad2	251	.set_voltage_time_sel = regulator_set_voltage_time_sel,
15282ba9	252	.set_suspend_mode = max77686_ldo_set_suspend_mode,
78ce6128	253	.set_suspend_disable = max77686_set_suspend_disable,
15282ba9 YSB	254	};
	255
	256	static struct regulator_ops max77686_buck1_ops = {
	257	.list_voltage = regulator_list_voltage_linear,
	258	.map_voltage = regulator_map_voltage_linear,
	259	.is_enabled = regulator_is_enabled_regmap,
	260	.enable = max77686_enable,
	261	.disable = regulator_disable_regmap,
	262	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	263	.set_voltage_sel = regulator_set_voltage_sel_regmap,
	264	.set_voltage_time_sel = regulator_set_voltage_time_sel,
78ce6128	265	.set_suspend_disable = max77686_set_suspend_disable,
133d4016 JL	266	};
	267
	268	static struct regulator_ops max77686_buck_dvs_ops = {
	269	.list_voltage = regulator_list_voltage_linear,
2e3f7f26	270	.map_voltage = regulator_map_voltage_linear,
133d4016	271	.is_enabled = regulator_is_enabled_regmap,
6d2c896b	272	.enable = max77686_enable,
133d4016 JL	273	.disable = regulator_disable_regmap,
	274	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	275	.set_voltage_sel = regulator_set_voltage_sel_regmap,
852abad2	276	.set_voltage_time_sel = regulator_set_voltage_time_sel,
f503071b	277	.set_ramp_delay = max77686_set_ramp_delay,
78ce6128	278	.set_suspend_disable = max77686_set_suspend_disable,
133d4016 JL	279	};
	280
	281	#define regulator_desc_ldo(num) { \
	282	.name = "LDO"#num, \
	283	.id = MAX77686_LDO##num, \
	284	.ops = &max77686_ops, \
	285	.type = REGULATOR_VOLTAGE, \
	286	.owner = THIS_MODULE, \
	287	.min_uV = MAX77686_LDO_MINUV, \
	288	.uV_step = MAX77686_LDO_UVSTEP, \
852abad2	289	.ramp_delay = MAX77686_RAMP_DELAY, \
133d4016 JL	290	.n_voltages = MAX77686_VSEL_MASK + 1, \
	291	.vsel_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \
	292	.vsel_mask = MAX77686_VSEL_MASK, \
	293	.enable_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \
	294	.enable_mask = MAX77686_OPMODE_MASK \
	295	<< MAX77686_OPMODE_SHIFT, \
	296	}
15282ba9 YSB	297	#define regulator_desc_lpm_ldo(num) { \
	298	.name = "LDO"#num, \
	299	.id = MAX77686_LDO##num, \
	300	.ops = &max77686_ldo_ops, \
	301	.type = REGULATOR_VOLTAGE, \
	302	.owner = THIS_MODULE, \
	303	.min_uV = MAX77686_LDO_MINUV, \
	304	.uV_step = MAX77686_LDO_UVSTEP, \
	305	.ramp_delay = MAX77686_RAMP_DELAY, \
	306	.n_voltages = MAX77686_VSEL_MASK + 1, \
	307	.vsel_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \
	308	.vsel_mask = MAX77686_VSEL_MASK, \
	309	.enable_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \
	310	.enable_mask = MAX77686_OPMODE_MASK \
	311	<< MAX77686_OPMODE_SHIFT, \
	312	}
133d4016	313	#define regulator_desc_ldo_low(num) { \
15282ba9 YSB	314	.name = "LDO"#num, \
	315	.id = MAX77686_LDO##num, \
	316	.ops = &max77686_ldo_ops, \
	317	.type = REGULATOR_VOLTAGE, \
	318	.owner = THIS_MODULE, \
	319	.min_uV = MAX77686_LDO_LOW_MINUV, \
	320	.uV_step = MAX77686_LDO_LOW_UVSTEP, \
	321	.ramp_delay = MAX77686_RAMP_DELAY, \
	322	.n_voltages = MAX77686_VSEL_MASK + 1, \
	323	.vsel_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \
	324	.vsel_mask = MAX77686_VSEL_MASK, \
	325	.enable_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \
	326	.enable_mask = MAX77686_OPMODE_MASK \
	327	<< MAX77686_OPMODE_SHIFT, \
	328	}
	329	#define regulator_desc_ldo1_low(num) { \
133d4016 JL	330	.name = "LDO"#num, \
	331	.id = MAX77686_LDO##num, \
	332	.ops = &max77686_ops, \
	333	.type = REGULATOR_VOLTAGE, \
	334	.owner = THIS_MODULE, \
	335	.min_uV = MAX77686_LDO_LOW_MINUV, \
	336	.uV_step = MAX77686_LDO_LOW_UVSTEP, \
852abad2	337	.ramp_delay = MAX77686_RAMP_DELAY, \
133d4016 JL	338	.n_voltages = MAX77686_VSEL_MASK + 1, \
	339	.vsel_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \
	340	.vsel_mask = MAX77686_VSEL_MASK, \
	341	.enable_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \
	342	.enable_mask = MAX77686_OPMODE_MASK \
	343	<< MAX77686_OPMODE_SHIFT, \
	344	}
	345	#define regulator_desc_buck(num) { \
	346	.name = "BUCK"#num, \
	347	.id = MAX77686_BUCK##num, \
	348	.ops = &max77686_ops, \
	349	.type = REGULATOR_VOLTAGE, \
	350	.owner = THIS_MODULE, \
	351	.min_uV = MAX77686_BUCK_MINUV, \
	352	.uV_step = MAX77686_BUCK_UVSTEP, \
852abad2	353	.ramp_delay = MAX77686_RAMP_DELAY, \
133d4016 JL	354	.n_voltages = MAX77686_VSEL_MASK + 1, \
	355	.vsel_reg = MAX77686_REG_BUCK5OUT + (num - 5) * 2, \
	356	.vsel_mask = MAX77686_VSEL_MASK, \
	357	.enable_reg = MAX77686_REG_BUCK5CTRL + (num - 5) * 2, \
	358	.enable_mask = MAX77686_OPMODE_MASK, \
	359	}
	360	#define regulator_desc_buck1(num) { \
	361	.name = "BUCK"#num, \
	362	.id = MAX77686_BUCK##num, \
15282ba9	363	.ops = &max77686_buck1_ops, \
133d4016 JL	364	.type = REGULATOR_VOLTAGE, \
	365	.owner = THIS_MODULE, \
	366	.min_uV = MAX77686_BUCK_MINUV, \
	367	.uV_step = MAX77686_BUCK_UVSTEP, \
852abad2	368	.ramp_delay = MAX77686_RAMP_DELAY, \
133d4016 JL	369	.n_voltages = MAX77686_VSEL_MASK + 1, \
	370	.vsel_reg = MAX77686_REG_BUCK1OUT, \
	371	.vsel_mask = MAX77686_VSEL_MASK, \
	372	.enable_reg = MAX77686_REG_BUCK1CTRL, \
	373	.enable_mask = MAX77686_OPMODE_MASK, \
	374	}
	375	#define regulator_desc_buck_dvs(num) { \
	376	.name = "BUCK"#num, \
	377	.id = MAX77686_BUCK##num, \
74adfee5	378	.ops = &max77686_buck_dvs_ops, \
133d4016 JL	379	.type = REGULATOR_VOLTAGE, \
	380	.owner = THIS_MODULE, \
	381	.min_uV = MAX77686_DVS_MINUV, \
	382	.uV_step = MAX77686_DVS_UVSTEP, \
852abad2	383	.ramp_delay = MAX77686_DVS_RAMP_DELAY, \
133d4016 JL	384	.n_voltages = MAX77686_DVS_VSEL_MASK + 1, \
	385	.vsel_reg = MAX77686_REG_BUCK2DVS1 + (num - 2) * 10, \
	386	.vsel_mask = MAX77686_DVS_VSEL_MASK, \
	387	.enable_reg = MAX77686_REG_BUCK2CTRL1 + (num - 2) * 10, \
	388	.enable_mask = MAX77686_OPMODE_MASK \
	389	<< MAX77686_OPMODE_BUCK234_SHIFT, \
	390	}
	391
73dbdf8f	392	static const struct regulator_desc regulators[] = {
15282ba9	393	regulator_desc_ldo1_low(1),
133d4016 JL	394	regulator_desc_ldo_low(2),
	395	regulator_desc_ldo(3),
	396	regulator_desc_ldo(4),
	397	regulator_desc_ldo(5),
	398	regulator_desc_ldo_low(6),
	399	regulator_desc_ldo_low(7),
	400	regulator_desc_ldo_low(8),
	401	regulator_desc_ldo(9),
15282ba9 YSB	402	regulator_desc_lpm_ldo(10),
	403	regulator_desc_lpm_ldo(11),
	404	regulator_desc_lpm_ldo(12),
133d4016	405	regulator_desc_ldo(13),
15282ba9	406	regulator_desc_lpm_ldo(14),
133d4016	407	regulator_desc_ldo_low(15),
15282ba9	408	regulator_desc_lpm_ldo(16),
133d4016 JL	409	regulator_desc_ldo(17),
	410	regulator_desc_ldo(18),
	411	regulator_desc_ldo(19),
	412	regulator_desc_ldo(20),
	413	regulator_desc_ldo(21),
	414	regulator_desc_ldo(22),
	415	regulator_desc_ldo(23),
	416	regulator_desc_ldo(24),
	417	regulator_desc_ldo(25),
	418	regulator_desc_ldo(26),
	419	regulator_desc_buck1(1),
	420	regulator_desc_buck_dvs(2),
	421	regulator_desc_buck_dvs(3),
	422	regulator_desc_buck_dvs(4),
	423	regulator_desc_buck(5),
	424	regulator_desc_buck(6),
	425	regulator_desc_buck(7),
	426	regulator_desc_buck(8),
	427	regulator_desc_buck(9),
	428	};
	429
4706fcab	430	#ifdef CONFIG_OF
b19f5758	431	static int max77686_pmic_dt_parse_pdata(struct platform_device *pdev,
4706fcab YSB	432	struct max77686_platform_data *pdata)
4706fcab YSB	433	{
b19f5758	434	struct max77686_dev *iodev = dev_get_drvdata(pdev->dev.parent);
4706fcab YSB	435	struct device_node pmic_np, regulators_np;
	436	struct max77686_regulator_data *rdata;
	437	struct of_regulator_match rmatch;
	438	unsigned int i;
	439
	440	pmic_np = iodev->dev->of_node;
398a6616	441	regulators_np = of_get_child_by_name(pmic_np, "voltage-regulators");
4706fcab	442	if (!regulators_np) {
b19f5758	443	dev_err(&pdev->dev, "could not find regulators sub-node\n");
4706fcab YSB	444	return -EINVAL;
	445	}
	446
	447	pdata->num_regulators = ARRAY_SIZE(regulators);
b19f5758	448	rdata = devm_kzalloc(&pdev->dev, sizeof(rdata)
4706fcab YSB	449	pdata->num_regulators, GFP_KERNEL);
4706fcab YSB	450	if (!rdata) {
da0ee72d	451	of_node_put(regulators_np);
4706fcab YSB	452	return -ENOMEM;
	453	}
	454
	455	for (i = 0; i < pdata->num_regulators; i++) {
	456	rmatch.name = regulators[i].name;
	457	rmatch.init_data = NULL;
d1ef065d	458	rmatch.of_node = NULL;
b19f5758	459	of_regulator_match(&pdev->dev, regulators_np, &rmatch, 1);
4706fcab	460	rdata[i].initdata = rmatch.init_data;
2c58e266	461	rdata[i].of_node = rmatch.of_node;
4706fcab YSB	462	}
	463
	464	pdata->regulators = rdata;
da0ee72d	465	of_node_put(regulators_np);
4706fcab YSB	466
	467	return 0;
	468	}
	469	#else
b19f5758	470	static int max77686_pmic_dt_parse_pdata(struct platform_device *pdev,
4706fcab YSB	471	struct max77686_platform_data *pdata)
	472	{
	473	return 0;
	474	}
	475	#endif /* CONFIG_OF */
	476
a5023574	477	static int max77686_pmic_probe(struct platform_device *pdev)
133d4016 JL	478	{
	479	struct max77686_dev *iodev = dev_get_drvdata(pdev->dev.parent);
	480	struct max77686_platform_data *pdata = dev_get_platdata(iodev->dev);
133d4016	481	struct max77686_data *max77686;
cb44cdea	482	int i, ret = 0;
c59d2a6b	483	struct regulator_config config = { };
133d4016 JL	484
	485	dev_dbg(&pdev->dev, "%s\n", __func__);
	486
4706fcab YSB	487	if (!pdata) {
	488	dev_err(&pdev->dev, "no platform data found for regulator\n");
	489	return -ENODEV;
	490	}
	491
	492	if (iodev->dev->of_node) {
b19f5758	493	ret = max77686_pmic_dt_parse_pdata(pdev, pdata);
4706fcab YSB	494	if (ret)
	495	return ret;
	496	}
	497
	498	if (pdata->num_regulators != MAX77686_REGULATORS) {
ab0d1cbe AL	499	dev_err(&pdev->dev,
	500	"Invalid initial data for regulator's initialiation\n");
	501	return -EINVAL;
	502	}
	503
133d4016 JL	504	max77686 = devm_kzalloc(&pdev->dev, sizeof(struct max77686_data),
	505	GFP_KERNEL);
	506	if (!max77686)
	507	return -ENOMEM;
	508
f503071b YSB	509	config.dev = &pdev->dev;
f503071b YSB	510	config.regmap = iodev->regmap;
6d2c896b	511	config.driver_data = max77686;
133d4016 JL	512	platform_set_drvdata(pdev, max77686);
133d4016 JL	513
ab0d1cbe	514	for (i = 0; i < MAX77686_REGULATORS; i++) {
b0c13e80 KK	515	struct regulator_dev *rdev;
b0c13e80 KK	516
ab0d1cbe	517	config.init_data = pdata->regulators[i].initdata;
2c58e266	518	config.of_node = pdata->regulators[i].of_node;
133d4016	519
68c5d186 KK	520	max77686->opmode[i] = regulators[i].enable_mask >>
68c5d186 KK	521	max77686_get_opmode_shift(i);
b0c13e80	522	rdev = devm_regulator_register(&pdev->dev,
44815b4a	523	&regulators[i], &config);
b0c13e80	524	if (IS_ERR(rdev)) {
f503071b	525	dev_err(&pdev->dev,
133d4016	526	"regulator init failed for %d\n", i);
b0c13e80	527	return PTR_ERR(rdev);
133d4016	528	}
133d4016	529	}
ab0d1cbe	530
133d4016 JL	531	return 0;
	532	}
	533
	534	static const struct platform_device_id max77686_pmic_id[] = {
	535	{"max77686-pmic", 0},
	536	{ },
	537	};
	538	MODULE_DEVICE_TABLE(platform, max77686_pmic_id);
	539
	540	static struct platform_driver max77686_pmic_driver = {
	541	.driver = {
	542	.name = "max77686-pmic",
	543	.owner = THIS_MODULE,
	544	},
	545	.probe = max77686_pmic_probe,
133d4016 JL	546	.id_table = max77686_pmic_id,
	547	};
	548
	549	static int __init max77686_pmic_init(void)
	550	{
	551	return platform_driver_register(&max77686_pmic_driver);
	552	}
	553	subsys_initcall(max77686_pmic_init);
	554
	555	static void __exit max77686_pmic_cleanup(void)
	556	{
	557	platform_driver_unregister(&max77686_pmic_driver);
	558	}
	559	module_exit(max77686_pmic_cleanup);
	560
	561	MODULE_DESCRIPTION("MAXIM 77686 Regulator Driver");
	562	MODULE_AUTHOR("Chiwoong Byun <woong.byun@samsung.com>");
	563	MODULE_LICENSE("GPL");