[deliverable/linux.git] / drivers / regulator / s2mps11.c

/*
 * s2mps11.c
 *
 * Copyright (c) 2012 Samsung Electronics Co., Ltd
 *              http://www.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.
 *
 */

#include <linux/bug.h>
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/gpio.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/mfd/samsung/core.h>
#include <linux/mfd/samsung/s2mps11.h>

struct s2mps11_info {
	struct regulator_dev **rdev;

	int ramp_delay2;
	int ramp_delay34;
	int ramp_delay5;
	int ramp_delay16;
	int ramp_delay7810;
	int ramp_delay9;

	bool buck6_ramp;
	bool buck2_ramp;
	bool buck3_ramp;
	bool buck4_ramp;
};

static int get_ramp_delay(int ramp_delay)
{
	unsigned char cnt = 0;

	ramp_delay /= 6;

	while (true) {
		ramp_delay = ramp_delay >> 1;
		if (ramp_delay == 0)
			break;
		cnt++;
	}
	return cnt;
}

static struct regulator_ops s2mps11_ldo_ops = {
	.list_voltage		= regulator_list_voltage_linear,
	.map_voltage		= regulator_map_voltage_linear,
	.is_enabled		= regulator_is_enabled_regmap,
	.enable			= regulator_enable_regmap,
	.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,
};

static struct regulator_ops s2mps11_buck_ops = {
	.list_voltage		= regulator_list_voltage_linear,
	.map_voltage		= regulator_map_voltage_linear,
	.is_enabled		= regulator_is_enabled_regmap,
	.enable			= regulator_enable_regmap,
	.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,
};

#define regulator_desc_ldo1(num)	{		\
	.name		= "LDO"#num,			\
	.id		= S2MPS11_LDO##num,		\
	.ops		= &s2mps11_ldo_ops,		\
	.type		= REGULATOR_VOLTAGE,		\
	.owner		= THIS_MODULE,			\
	.min_uV		= S2MPS11_LDO_MIN,		\
	.uV_step	= S2MPS11_LDO_STEP1,		\
	.n_voltages	= S2MPS11_LDO_N_VOLTAGES,	\
	.vsel_reg	= S2MPS11_REG_L1CTRL + num - 1,	\
	.vsel_mask	= S2MPS11_LDO_VSEL_MASK,	\
	.enable_reg	= S2MPS11_REG_L1CTRL + num - 1,	\
	.enable_mask	= S2MPS11_ENABLE_MASK		\
}
#define regulator_desc_ldo2(num)	{		\
	.name		= "LDO"#num,			\
	.id		= S2MPS11_LDO##num,		\
	.ops		= &s2mps11_ldo_ops,		\
	.type		= REGULATOR_VOLTAGE,		\
	.owner		= THIS_MODULE,			\
	.min_uV		= S2MPS11_LDO_MIN,		\
	.uV_step	= S2MPS11_LDO_STEP2,		\
	.n_voltages	= S2MPS11_LDO_N_VOLTAGES,	\
	.vsel_reg	= S2MPS11_REG_L1CTRL + num - 1,	\
	.vsel_mask	= S2MPS11_LDO_VSEL_MASK,	\
	.enable_reg	= S2MPS11_REG_L1CTRL + num - 1,	\
	.enable_mask	= S2MPS11_ENABLE_MASK		\
}

#define regulator_desc_buck1_4(num)	{			\
	.name		= "BUCK"#num,				\
	.id		= S2MPS11_BUCK##num,			\
	.ops		= &s2mps11_buck_ops,			\
	.type		= REGULATOR_VOLTAGE,			\
	.owner		= THIS_MODULE,				\
	.min_uV		= S2MPS11_BUCK_MIN1,			\
	.uV_step	= S2MPS11_BUCK_STEP1,			\
	.n_voltages	= S2MPS11_BUCK_N_VOLTAGES,		\
	.vsel_reg	= S2MPS11_REG_B1CTRL2 + (num - 1) * 2,	\
	.vsel_mask	= S2MPS11_BUCK_VSEL_MASK,		\
	.enable_reg	= S2MPS11_REG_B1CTRL1 + (num - 1) * 2,	\
	.enable_mask	= S2MPS11_ENABLE_MASK			\
}

#define regulator_desc_buck5	{				\
	.name		= "BUCK5",				\
	.id		= S2MPS11_BUCK5,			\
	.ops		= &s2mps11_buck_ops,			\
	.type		= REGULATOR_VOLTAGE,			\
	.owner		= THIS_MODULE,				\
	.min_uV		= S2MPS11_BUCK_MIN1,			\
	.uV_step	= S2MPS11_BUCK_STEP1,			\
	.n_voltages	= S2MPS11_BUCK_N_VOLTAGES,		\
	.vsel_reg	= S2MPS11_REG_B5CTRL2,			\
	.vsel_mask	= S2MPS11_BUCK_VSEL_MASK,		\
	.enable_reg	= S2MPS11_REG_B5CTRL1,			\
	.enable_mask	= S2MPS11_ENABLE_MASK			\
}

#define regulator_desc_buck6_8(num)	{			\
	.name		= "BUCK"#num,				\
	.id		= S2MPS11_BUCK##num,			\
	.ops		= &s2mps11_buck_ops,			\
	.type		= REGULATOR_VOLTAGE,			\
	.owner		= THIS_MODULE,				\
	.min_uV		= S2MPS11_BUCK_MIN1,			\
	.uV_step	= S2MPS11_BUCK_STEP1,			\
	.n_voltages	= S2MPS11_BUCK_N_VOLTAGES,		\
	.vsel_reg	= S2MPS11_REG_B6CTRL2 + (num - 6) * 2,	\
	.vsel_mask	= S2MPS11_BUCK_VSEL_MASK,		\
	.enable_reg	= S2MPS11_REG_B6CTRL1 + (num - 6) * 2,	\
	.enable_mask	= S2MPS11_ENABLE_MASK			\
}

#define regulator_desc_buck9	{				\
	.name		= "BUCK9",				\
	.id		= S2MPS11_BUCK9,			\
	.ops		= &s2mps11_buck_ops,			\
	.type		= REGULATOR_VOLTAGE,			\
	.owner		= THIS_MODULE,				\
	.min_uV		= S2MPS11_BUCK_MIN3,			\
	.uV_step	= S2MPS11_BUCK_STEP3,			\
	.n_voltages	= S2MPS11_BUCK_N_VOLTAGES,		\
	.vsel_reg	= S2MPS11_REG_B9CTRL2,			\
	.vsel_mask	= S2MPS11_BUCK_VSEL_MASK,		\
	.enable_reg	= S2MPS11_REG_B9CTRL1,			\
	.enable_mask	= S2MPS11_ENABLE_MASK			\
}

#define regulator_desc_buck10	{				\
	.name		= "BUCK10",				\
	.id		= S2MPS11_BUCK10,			\
	.ops		= &s2mps11_buck_ops,			\
	.type		= REGULATOR_VOLTAGE,			\
	.owner		= THIS_MODULE,				\
	.min_uV		= S2MPS11_BUCK_MIN2,			\
	.uV_step	= S2MPS11_BUCK_STEP2,			\
	.n_voltages	= S2MPS11_BUCK_N_VOLTAGES,		\
	.vsel_reg	= S2MPS11_REG_B9CTRL2,			\
	.vsel_mask	= S2MPS11_BUCK_VSEL_MASK,		\
	.enable_reg	= S2MPS11_REG_B9CTRL1,			\
	.enable_mask	= S2MPS11_ENABLE_MASK			\
}

static struct regulator_desc regulators[] = {
	regulator_desc_ldo2(1),
	regulator_desc_ldo1(2),
	regulator_desc_ldo1(3),
	regulator_desc_ldo1(4),
	regulator_desc_ldo1(5),
	regulator_desc_ldo2(6),
	regulator_desc_ldo1(7),
	regulator_desc_ldo1(8),
	regulator_desc_ldo1(9),
	regulator_desc_ldo1(10),
	regulator_desc_ldo2(11),
	regulator_desc_ldo1(12),
	regulator_desc_ldo1(13),
	regulator_desc_ldo1(14),
	regulator_desc_ldo1(15),
	regulator_desc_ldo1(16),
	regulator_desc_ldo1(17),
	regulator_desc_ldo1(18),
	regulator_desc_ldo1(19),
	regulator_desc_ldo1(20),
	regulator_desc_ldo1(21),
	regulator_desc_ldo2(22),
	regulator_desc_ldo2(23),
	regulator_desc_ldo1(24),
	regulator_desc_ldo1(25),
	regulator_desc_ldo1(26),
	regulator_desc_ldo2(27),
	regulator_desc_ldo1(28),
	regulator_desc_ldo1(29),
	regulator_desc_ldo1(30),
	regulator_desc_ldo1(31),
	regulator_desc_ldo1(32),
	regulator_desc_ldo1(33),
	regulator_desc_ldo1(34),
	regulator_desc_ldo1(35),
	regulator_desc_ldo1(36),
	regulator_desc_ldo1(37),
	regulator_desc_ldo1(38),
	regulator_desc_buck1_4(1),
	regulator_desc_buck1_4(2),
	regulator_desc_buck1_4(3),
	regulator_desc_buck1_4(4),
	regulator_desc_buck5,
	regulator_desc_buck6_8(6),
	regulator_desc_buck6_8(7),
	regulator_desc_buck6_8(8),
	regulator_desc_buck9,
	regulator_desc_buck10,
};

static __devinit int s2mps11_pmic_probe(struct platform_device *pdev)
{
	struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent);
	struct sec_platform_data *pdata = dev_get_platdata(iodev->dev);
	struct regulator_config config = { };
	struct regulator_dev **rdev;
	struct s2mps11_info *s2mps11;
	int i, ret, size;
	unsigned char ramp_enable, ramp_reg = 0;

	if (!pdata) {
		dev_err(pdev->dev.parent, "Platform data not supplied\n");
		return -ENODEV;
	}

	s2mps11 = devm_kzalloc(&pdev->dev, sizeof(struct s2mps11_info),
				GFP_KERNEL);
	if (!s2mps11)
		return -ENOMEM;

	size = sizeof(struct regulator_dev *) * S2MPS11_REGULATOR_MAX;
	s2mps11->rdev = devm_kzalloc(&pdev->dev, size, GFP_KERNEL);
	if (!s2mps11->rdev) {
		return -ENOMEM;
	}

	rdev = s2mps11->rdev;
	platform_set_drvdata(pdev, s2mps11);

	s2mps11->ramp_delay2 = pdata->buck2_ramp_delay;
	s2mps11->ramp_delay34 = pdata->buck34_ramp_delay;
	s2mps11->ramp_delay5 = pdata->buck5_ramp_delay;
	s2mps11->ramp_delay16 = pdata->buck16_ramp_delay;
	s2mps11->ramp_delay7810 = pdata->buck7810_ramp_delay;
	s2mps11->ramp_delay9 = pdata->buck9_ramp_delay;

	s2mps11->buck6_ramp = pdata->buck6_ramp_enable;
	s2mps11->buck2_ramp = pdata->buck2_ramp_enable;
	s2mps11->buck3_ramp = pdata->buck3_ramp_enable;
	s2mps11->buck4_ramp = pdata->buck4_ramp_enable;

	ramp_enable = (s2mps11->buck2_ramp << 3) | (s2mps11->buck3_ramp << 2) |
		(s2mps11->buck4_ramp << 1) | s2mps11->buck6_ramp ;

	if (ramp_enable) {
		if (s2mps11->buck2_ramp)
			ramp_reg |= get_ramp_delay(s2mps11->ramp_delay2) >> 6;
		if (s2mps11->buck3_ramp || s2mps11->buck4_ramp)
			ramp_reg |= get_ramp_delay(s2mps11->ramp_delay34) >> 4;
		sec_reg_write(iodev, S2MPS11_REG_RAMP, ramp_reg | ramp_enable);
	}

	ramp_reg &= 0x00;
	ramp_reg |= get_ramp_delay(s2mps11->ramp_delay5) >> 6;
	ramp_reg |= get_ramp_delay(s2mps11->ramp_delay16) >> 4;
	ramp_reg |= get_ramp_delay(s2mps11->ramp_delay7810) >> 2;
	ramp_reg |= get_ramp_delay(s2mps11->ramp_delay9);
	sec_reg_write(iodev, S2MPS11_REG_RAMP_BUCK, ramp_reg);

	for (i = 0; i < S2MPS11_REGULATOR_MAX; i++) {

		config.dev = &pdev->dev;
		config.regmap = iodev->regmap;
		config.init_data = pdata->regulators[i].initdata;
		config.driver_data = s2mps11;

		rdev[i] = regulator_register(&regulators[i], &config);
		if (IS_ERR(rdev[i])) {
			ret = PTR_ERR(rdev[i]);
			dev_err(&pdev->dev, "regulator init failed for %d\n",
				i);
			rdev[i] = NULL;
			goto err;
		}
	}

	return 0;
err:
	for (i = 0; i < S2MPS11_REGULATOR_MAX; i++)
		if (rdev[i])
			regulator_unregister(rdev[i]);

	return ret;
}

static int __devexit s2mps11_pmic_remove(struct platform_device *pdev)
{
	struct s2mps11_info *s2mps11 = platform_get_drvdata(pdev);
	struct regulator_dev **rdev = s2mps11->rdev;
	int i;

	for (i = 0; i < S2MPS11_REGULATOR_MAX; i++)
		if (rdev[i])
			regulator_unregister(rdev[i]);

	return 0;
}

static const struct platform_device_id s2mps11_pmic_id[] = {
	{ "s2mps11-pmic", 0},
	{ },
};
MODULE_DEVICE_TABLE(platform, s2mps11_pmic_id);

static struct platform_driver s2mps11_pmic_driver = {
	.driver = {
		.name = "s2mps11-pmic",
		.owner = THIS_MODULE,
	},
	.probe = s2mps11_pmic_probe,
	.remove = __devexit_p(s2mps11_pmic_remove),
	.id_table = s2mps11_pmic_id,
};

static int __init s2mps11_pmic_init(void)
{
	return platform_driver_register(&s2mps11_pmic_driver);
}
subsys_initcall(s2mps11_pmic_init);

static void __exit s2mps11_pmic_exit(void)
{
	platform_driver_unregister(&s2mps11_pmic_driver);
}
module_exit(s2mps11_pmic_exit);

/* Module information */
MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
MODULE_DESCRIPTION("SAMSUNG S2MPS11 Regulator Driver");
MODULE_LICENSE("GPL");
Commit	Line	Data
cb74685e SK	1	/*
	2	* s2mps11.c
	3	*
	4	* Copyright (c) 2012 Samsung Electronics Co., Ltd
	5	* http://www.samsung.com
	6	*
	7	* This program is free software; you can redistribute it and/or modify it
	8	* under the terms of the GNU General Public License as published by the
	9	* Free Software Foundation; either version 2 of the License, or (at your
	10	* option) any later version.
	11	*
	12	*/
	13
	14	#include <linux/bug.h>
	15	#include <linux/delay.h>
	16	#include <linux/err.h>
	17	#include <linux/gpio.h>
	18	#include <linux/slab.h>
	19	#include <linux/module.h>
	20	#include <linux/platform_device.h>
	21	#include <linux/regulator/driver.h>
	22	#include <linux/regulator/machine.h>
	23	#include <linux/mfd/samsung/core.h>
	24	#include <linux/mfd/samsung/s2mps11.h>
	25
	26	struct s2mps11_info {
cb74685e SK	27	struct regulator_dev **rdev;
	28
	29	int ramp_delay2;
	30	int ramp_delay34;
	31	int ramp_delay5;
	32	int ramp_delay16;
	33	int ramp_delay7810;
	34	int ramp_delay9;
	35
	36	bool buck6_ramp;
	37	bool buck2_ramp;
	38	bool buck3_ramp;
	39	bool buck4_ramp;
	40	};
	41
	42	static int get_ramp_delay(int ramp_delay)
	43	{
	44	unsigned char cnt = 0;
	45
	46	ramp_delay /= 6;
	47
	48	while (true) {
	49	ramp_delay = ramp_delay >> 1;
	50	if (ramp_delay == 0)
	51	break;
	52	cnt++;
	53	}
	54	return cnt;
	55	}
	56
	57	static struct regulator_ops s2mps11_ldo_ops = {
	58	.list_voltage = regulator_list_voltage_linear,
	59	.map_voltage = regulator_map_voltage_linear,
	60	.is_enabled = regulator_is_enabled_regmap,
	61	.enable = regulator_enable_regmap,
	62	.disable = regulator_disable_regmap,
	63	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	64	.set_voltage_sel = regulator_set_voltage_sel_regmap,
	65	.set_voltage_time_sel = regulator_set_voltage_time_sel,
	66	};
	67
	68	static struct regulator_ops s2mps11_buck_ops = {
	69	.list_voltage = regulator_list_voltage_linear,
	70	.map_voltage = regulator_map_voltage_linear,
	71	.is_enabled = regulator_is_enabled_regmap,
	72	.enable = regulator_enable_regmap,
	73	.disable = regulator_disable_regmap,
	74	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	75	.set_voltage_sel = regulator_set_voltage_sel_regmap,
	76	.set_voltage_time_sel = regulator_set_voltage_time_sel,
	77	};
	78
	79	#define regulator_desc_ldo1(num) { \
	80	.name = "LDO"#num, \
	81	.id = S2MPS11_LDO##num, \
	82	.ops = &s2mps11_ldo_ops, \
	83	.type = REGULATOR_VOLTAGE, \
	84	.owner = THIS_MODULE, \
	85	.min_uV = S2MPS11_LDO_MIN, \
	86	.uV_step = S2MPS11_LDO_STEP1, \
	87	.n_voltages = S2MPS11_LDO_N_VOLTAGES, \
	88	.vsel_reg = S2MPS11_REG_L1CTRL + num - 1, \
2693fcab	89	.vsel_mask = S2MPS11_LDO_VSEL_MASK, \
cb74685e SK	90	.enable_reg = S2MPS11_REG_L1CTRL + num - 1, \
	91	.enable_mask = S2MPS11_ENABLE_MASK \
	92	}
	93	#define regulator_desc_ldo2(num) { \
	94	.name = "LDO"#num, \
	95	.id = S2MPS11_LDO##num, \
	96	.ops = &s2mps11_ldo_ops, \
	97	.type = REGULATOR_VOLTAGE, \
	98	.owner = THIS_MODULE, \
	99	.min_uV = S2MPS11_LDO_MIN, \
	100	.uV_step = S2MPS11_LDO_STEP2, \
	101	.n_voltages = S2MPS11_LDO_N_VOLTAGES, \
	102	.vsel_reg = S2MPS11_REG_L1CTRL + num - 1, \
2693fcab	103	.vsel_mask = S2MPS11_LDO_VSEL_MASK, \
cb74685e SK	104	.enable_reg = S2MPS11_REG_L1CTRL + num - 1, \
	105	.enable_mask = S2MPS11_ENABLE_MASK \
	106	}
	107
	108	#define regulator_desc_buck1_4(num) { \
	109	.name = "BUCK"#num, \
	110	.id = S2MPS11_BUCK##num, \
	111	.ops = &s2mps11_buck_ops, \
	112	.type = REGULATOR_VOLTAGE, \
	113	.owner = THIS_MODULE, \
	114	.min_uV = S2MPS11_BUCK_MIN1, \
	115	.uV_step = S2MPS11_BUCK_STEP1, \
	116	.n_voltages = S2MPS11_BUCK_N_VOLTAGES, \
	117	.vsel_reg = S2MPS11_REG_B1CTRL2 + (num - 1) * 2, \
2693fcab	118	.vsel_mask = S2MPS11_BUCK_VSEL_MASK, \
cb74685e SK	119	.enable_reg = S2MPS11_REG_B1CTRL1 + (num - 1) * 2, \
	120	.enable_mask = S2MPS11_ENABLE_MASK \
	121	}
	122
	123	#define regulator_desc_buck5 { \
	124	.name = "BUCK5", \
	125	.id = S2MPS11_BUCK5, \
	126	.ops = &s2mps11_buck_ops, \
	127	.type = REGULATOR_VOLTAGE, \
	128	.owner = THIS_MODULE, \
	129	.min_uV = S2MPS11_BUCK_MIN1, \
	130	.uV_step = S2MPS11_BUCK_STEP1, \
	131	.n_voltages = S2MPS11_BUCK_N_VOLTAGES, \
	132	.vsel_reg = S2MPS11_REG_B5CTRL2, \
2693fcab	133	.vsel_mask = S2MPS11_BUCK_VSEL_MASK, \
cb74685e SK	134	.enable_reg = S2MPS11_REG_B5CTRL1, \
	135	.enable_mask = S2MPS11_ENABLE_MASK \
	136	}
	137
	138	#define regulator_desc_buck6_8(num) { \
	139	.name = "BUCK"#num, \
	140	.id = S2MPS11_BUCK##num, \
	141	.ops = &s2mps11_buck_ops, \
	142	.type = REGULATOR_VOLTAGE, \
	143	.owner = THIS_MODULE, \
	144	.min_uV = S2MPS11_BUCK_MIN1, \
	145	.uV_step = S2MPS11_BUCK_STEP1, \
	146	.n_voltages = S2MPS11_BUCK_N_VOLTAGES, \
	147	.vsel_reg = S2MPS11_REG_B6CTRL2 + (num - 6) * 2, \
2693fcab	148	.vsel_mask = S2MPS11_BUCK_VSEL_MASK, \
cb74685e SK	149	.enable_reg = S2MPS11_REG_B6CTRL1 + (num - 6) * 2, \
	150	.enable_mask = S2MPS11_ENABLE_MASK \
	151	}
	152
	153	#define regulator_desc_buck9 { \
	154	.name = "BUCK9", \
	155	.id = S2MPS11_BUCK9, \
	156	.ops = &s2mps11_buck_ops, \
	157	.type = REGULATOR_VOLTAGE, \
	158	.owner = THIS_MODULE, \
	159	.min_uV = S2MPS11_BUCK_MIN3, \
	160	.uV_step = S2MPS11_BUCK_STEP3, \
	161	.n_voltages = S2MPS11_BUCK_N_VOLTAGES, \
	162	.vsel_reg = S2MPS11_REG_B9CTRL2, \
2693fcab	163	.vsel_mask = S2MPS11_BUCK_VSEL_MASK, \
cb74685e SK	164	.enable_reg = S2MPS11_REG_B9CTRL1, \
	165	.enable_mask = S2MPS11_ENABLE_MASK \
	166	}
	167
	168	#define regulator_desc_buck10 { \
	169	.name = "BUCK10", \
	170	.id = S2MPS11_BUCK10, \
	171	.ops = &s2mps11_buck_ops, \
	172	.type = REGULATOR_VOLTAGE, \
	173	.owner = THIS_MODULE, \
	174	.min_uV = S2MPS11_BUCK_MIN2, \
	175	.uV_step = S2MPS11_BUCK_STEP2, \
	176	.n_voltages = S2MPS11_BUCK_N_VOLTAGES, \
	177	.vsel_reg = S2MPS11_REG_B9CTRL2, \
2693fcab	178	.vsel_mask = S2MPS11_BUCK_VSEL_MASK, \
cb74685e SK	179	.enable_reg = S2MPS11_REG_B9CTRL1, \
	180	.enable_mask = S2MPS11_ENABLE_MASK \
	181	}
	182
	183	static struct regulator_desc regulators[] = {
	184	regulator_desc_ldo2(1),
	185	regulator_desc_ldo1(2),
	186	regulator_desc_ldo1(3),
	187	regulator_desc_ldo1(4),
	188	regulator_desc_ldo1(5),
	189	regulator_desc_ldo2(6),
	190	regulator_desc_ldo1(7),
	191	regulator_desc_ldo1(8),
	192	regulator_desc_ldo1(9),
	193	regulator_desc_ldo1(10),
	194	regulator_desc_ldo2(11),
	195	regulator_desc_ldo1(12),
	196	regulator_desc_ldo1(13),
	197	regulator_desc_ldo1(14),
	198	regulator_desc_ldo1(15),
	199	regulator_desc_ldo1(16),
	200	regulator_desc_ldo1(17),
	201	regulator_desc_ldo1(18),
	202	regulator_desc_ldo1(19),
	203	regulator_desc_ldo1(20),
	204	regulator_desc_ldo1(21),
	205	regulator_desc_ldo2(22),
	206	regulator_desc_ldo2(23),
	207	regulator_desc_ldo1(24),
	208	regulator_desc_ldo1(25),
	209	regulator_desc_ldo1(26),
	210	regulator_desc_ldo2(27),
	211	regulator_desc_ldo1(28),
	212	regulator_desc_ldo1(29),
	213	regulator_desc_ldo1(30),
	214	regulator_desc_ldo1(31),
	215	regulator_desc_ldo1(32),
	216	regulator_desc_ldo1(33),
	217	regulator_desc_ldo1(34),
	218	regulator_desc_ldo1(35),
	219	regulator_desc_ldo1(36),
	220	regulator_desc_ldo1(37),
	221	regulator_desc_ldo1(38),
	222	regulator_desc_buck1_4(1),
	223	regulator_desc_buck1_4(2),
	224	regulator_desc_buck1_4(3),
	225	regulator_desc_buck1_4(4),
	226	regulator_desc_buck5,
	227	regulator_desc_buck6_8(6),
	228	regulator_desc_buck6_8(7),
	229	regulator_desc_buck6_8(8),
	230	regulator_desc_buck9,
	231	regulator_desc_buck10,
	232	};
	233
	234	static __devinit int s2mps11_pmic_probe(struct platform_device *pdev)
	235	{
	236	struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent);
	237	struct sec_platform_data *pdata = dev_get_platdata(iodev->dev);
	238	struct regulator_config config = { };
	239	struct regulator_dev **rdev;
	240	struct s2mps11_info *s2mps11;
	241	int i, ret, size;
	242	unsigned char ramp_enable, ramp_reg = 0;
243
244	if (!pdata) {
245	dev_err(pdev->dev.parent, "Platform data not supplied\n");
246	return -ENODEV;
247	}
248
249	s2mps11 = devm_kzalloc(&pdev->dev, sizeof(struct s2mps11_info),
250	GFP_KERNEL);
251	if (!s2mps11)
252	return -ENOMEM;
253
254	size = sizeof(struct regulator_dev ) S2MPS11_REGULATOR_MAX;
255	s2mps11->rdev = devm_kzalloc(&pdev->dev, size, GFP_KERNEL);
256	if (!s2mps11->rdev) {
257	return -ENOMEM;
258	}
259
260	rdev = s2mps11->rdev;
cb74685e SK	261	platform_set_drvdata(pdev, s2mps11);
	262
	263	s2mps11->ramp_delay2 = pdata->buck2_ramp_delay;
	264	s2mps11->ramp_delay34 = pdata->buck34_ramp_delay;
	265	s2mps11->ramp_delay5 = pdata->buck5_ramp_delay;
	266	s2mps11->ramp_delay16 = pdata->buck16_ramp_delay;
	267	s2mps11->ramp_delay7810 = pdata->buck7810_ramp_delay;
	268	s2mps11->ramp_delay9 = pdata->buck9_ramp_delay;
	269
	270	s2mps11->buck6_ramp = pdata->buck6_ramp_enable;
	271	s2mps11->buck2_ramp = pdata->buck2_ramp_enable;
	272	s2mps11->buck3_ramp = pdata->buck3_ramp_enable;
	273	s2mps11->buck4_ramp = pdata->buck4_ramp_enable;
	274
	275	ramp_enable = (s2mps11->buck2_ramp << 3) \| (s2mps11->buck3_ramp << 2) \|
	276	(s2mps11->buck4_ramp << 1) \| s2mps11->buck6_ramp ;
	277
	278	if (ramp_enable) {
	279	if (s2mps11->buck2_ramp)
	280	ramp_reg \|= get_ramp_delay(s2mps11->ramp_delay2) >> 6;
	281	if (s2mps11->buck3_ramp \|\| s2mps11->buck4_ramp)
	282	ramp_reg \|= get_ramp_delay(s2mps11->ramp_delay34) >> 4;
c06eed39	283	sec_reg_write(iodev, S2MPS11_REG_RAMP, ramp_reg \| ramp_enable);
cb74685e SK	284	}
	285
	286	ramp_reg &= 0x00;
	287	ramp_reg \|= get_ramp_delay(s2mps11->ramp_delay5) >> 6;
	288	ramp_reg \|= get_ramp_delay(s2mps11->ramp_delay16) >> 4;
	289	ramp_reg \|= get_ramp_delay(s2mps11->ramp_delay7810) >> 2;
	290	ramp_reg \|= get_ramp_delay(s2mps11->ramp_delay9);
c06eed39	291	sec_reg_write(iodev, S2MPS11_REG_RAMP_BUCK, ramp_reg);
cb74685e SK	292
	293	for (i = 0; i < S2MPS11_REGULATOR_MAX; i++) {
	294
232b2504	295	config.dev = &pdev->dev;
cb74685e SK	296	config.regmap = iodev->regmap;
	297	config.init_data = pdata->regulators[i].initdata;
	298	config.driver_data = s2mps11;
	299
	300	rdev[i] = regulator_register(&regulators[i], &config);
	301	if (IS_ERR(rdev[i])) {
	302	ret = PTR_ERR(rdev[i]);
232b2504 AL	303	dev_err(&pdev->dev, "regulator init failed for %d\n",
232b2504 AL	304	i);
cb74685e SK	305	rdev[i] = NULL;
	306	goto err;
	307	}
	308	}
	309
	310	return 0;
	311	err:
	312	for (i = 0; i < S2MPS11_REGULATOR_MAX; i++)
	313	if (rdev[i])
	314	regulator_unregister(rdev[i]);
	315
	316	return ret;
	317	}
	318
	319	static int __devexit s2mps11_pmic_remove(struct platform_device *pdev)
	320	{
	321	struct s2mps11_info *s2mps11 = platform_get_drvdata(pdev);
	322	struct regulator_dev **rdev = s2mps11->rdev;
	323	int i;
	324
	325	for (i = 0; i < S2MPS11_REGULATOR_MAX; i++)
	326	if (rdev[i])
	327	regulator_unregister(rdev[i]);
	328
	329	return 0;
	330	}
	331
	332	static const struct platform_device_id s2mps11_pmic_id[] = {
	333	{ "s2mps11-pmic", 0},
	334	{ },
	335	};
	336	MODULE_DEVICE_TABLE(platform, s2mps11_pmic_id);
	337
	338	static struct platform_driver s2mps11_pmic_driver = {
	339	.driver = {
	340	.name = "s2mps11-pmic",
	341	.owner = THIS_MODULE,
	342	},
	343	.probe = s2mps11_pmic_probe,
	344	.remove = __devexit_p(s2mps11_pmic_remove),
	345	.id_table = s2mps11_pmic_id,
	346	};
	347
	348	static int __init s2mps11_pmic_init(void)
	349	{
	350	return platform_driver_register(&s2mps11_pmic_driver);
	351	}
	352	subsys_initcall(s2mps11_pmic_init);
	353
	354	static void __exit s2mps11_pmic_exit(void)
	355	{
	356	platform_driver_unregister(&s2mps11_pmic_driver);
	357	}
	358	module_exit(s2mps11_pmic_exit);
	359
	360	/* Module information */
	361	MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
	362	MODULE_DESCRIPTION("SAMSUNG S2MPS11 Regulator Driver");
	363	MODULE_LICENSE("GPL");