[linux-2.6-block.git] / drivers / regulator / s2mpa01.c

// SPDX-License-Identifier: GPL-2.0+
//
// Copyright (c) 2013 Samsung Electronics Co., Ltd
//		http://www.samsung.com

#include <linux/bug.h>
#include <linux/err.h>
#include <linux/gpio.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/regmap.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/samsung/core.h>
#include <linux/mfd/samsung/s2mpa01.h>

#define S2MPA01_REGULATOR_CNT ARRAY_SIZE(regulators)

struct s2mpa01_info {
	struct of_regulator_match rdata[S2MPA01_REGULATOR_MAX];
	int ramp_delay24;
	int ramp_delay3;
	int ramp_delay5;
	int ramp_delay16;
	int ramp_delay7;
	int ramp_delay8910;
};

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

	ramp_delay /= 6250;

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

	if (cnt > 3)
		cnt = 3;

	return cnt;
}

static int s2mpa01_regulator_set_voltage_time_sel(struct regulator_dev *rdev,
				   unsigned int old_selector,
				   unsigned int new_selector)
{
	struct s2mpa01_info *s2mpa01 = rdev_get_drvdata(rdev);
	unsigned int ramp_delay = 0;
	int old_volt, new_volt;

	switch (rdev_get_id(rdev)) {
	case S2MPA01_BUCK2:
	case S2MPA01_BUCK4:
		ramp_delay = s2mpa01->ramp_delay24;
		break;
	case S2MPA01_BUCK3:
		ramp_delay = s2mpa01->ramp_delay3;
		break;
	case S2MPA01_BUCK5:
		ramp_delay = s2mpa01->ramp_delay5;
		break;
	case S2MPA01_BUCK1:
	case S2MPA01_BUCK6:
		ramp_delay = s2mpa01->ramp_delay16;
		break;
	case S2MPA01_BUCK7:
		ramp_delay = s2mpa01->ramp_delay7;
		break;
	case S2MPA01_BUCK8:
	case S2MPA01_BUCK9:
	case S2MPA01_BUCK10:
		ramp_delay = s2mpa01->ramp_delay8910;
		break;
	}

	if (ramp_delay == 0)
		ramp_delay = rdev->desc->ramp_delay;

	old_volt = rdev->desc->min_uV + (rdev->desc->uV_step * old_selector);
	new_volt = rdev->desc->min_uV + (rdev->desc->uV_step * new_selector);

	return DIV_ROUND_UP(abs(new_volt - old_volt), ramp_delay);
}

static int s2mpa01_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
{
	struct s2mpa01_info *s2mpa01 = rdev_get_drvdata(rdev);
	unsigned int ramp_val, ramp_shift, ramp_reg = S2MPA01_REG_RAMP2;
	unsigned int ramp_enable = 1, enable_shift = 0;
	int ret;

	switch (rdev_get_id(rdev)) {
	case S2MPA01_BUCK1:
		enable_shift = S2MPA01_BUCK1_RAMP_EN_SHIFT;
		if (!ramp_delay) {
			ramp_enable = 0;
			break;
		}

		if (ramp_delay > s2mpa01->ramp_delay16)
			s2mpa01->ramp_delay16 = ramp_delay;
		else
			ramp_delay = s2mpa01->ramp_delay16;

		ramp_shift = S2MPA01_BUCK16_RAMP_SHIFT;
		break;
	case S2MPA01_BUCK2:
		enable_shift = S2MPA01_BUCK2_RAMP_EN_SHIFT;
		if (!ramp_delay) {
			ramp_enable = 0;
			break;
		}

		if (ramp_delay > s2mpa01->ramp_delay24)
			s2mpa01->ramp_delay24 = ramp_delay;
		else
			ramp_delay = s2mpa01->ramp_delay24;

		ramp_shift = S2MPA01_BUCK24_RAMP_SHIFT;
		ramp_reg = S2MPA01_REG_RAMP1;
		break;
	case S2MPA01_BUCK3:
		enable_shift = S2MPA01_BUCK3_RAMP_EN_SHIFT;
		if (!ramp_delay) {
			ramp_enable = 0;
			break;
		}

		s2mpa01->ramp_delay3 = ramp_delay;
		ramp_shift = S2MPA01_BUCK3_RAMP_SHIFT;
		ramp_reg = S2MPA01_REG_RAMP1;
		break;
	case S2MPA01_BUCK4:
		enable_shift = S2MPA01_BUCK4_RAMP_EN_SHIFT;
		if (!ramp_delay) {
			ramp_enable = 0;
			break;
		}

		if (ramp_delay > s2mpa01->ramp_delay24)
			s2mpa01->ramp_delay24 = ramp_delay;
		else
			ramp_delay = s2mpa01->ramp_delay24;

		ramp_shift = S2MPA01_BUCK24_RAMP_SHIFT;
		ramp_reg = S2MPA01_REG_RAMP1;
		break;
	case S2MPA01_BUCK5:
		s2mpa01->ramp_delay5 = ramp_delay;
		ramp_shift = S2MPA01_BUCK5_RAMP_SHIFT;
		break;
	case S2MPA01_BUCK6:
		if (ramp_delay > s2mpa01->ramp_delay16)
			s2mpa01->ramp_delay16 = ramp_delay;
		else
			ramp_delay = s2mpa01->ramp_delay16;

		ramp_shift = S2MPA01_BUCK16_RAMP_SHIFT;
		break;
	case S2MPA01_BUCK7:
		s2mpa01->ramp_delay7 = ramp_delay;
		ramp_shift = S2MPA01_BUCK7_RAMP_SHIFT;
		break;
	case S2MPA01_BUCK8:
	case S2MPA01_BUCK9:
	case S2MPA01_BUCK10:
		if (ramp_delay > s2mpa01->ramp_delay8910)
			s2mpa01->ramp_delay8910 = ramp_delay;
		else
			ramp_delay = s2mpa01->ramp_delay8910;

		ramp_shift = S2MPA01_BUCK8910_RAMP_SHIFT;
		break;
	default:
		return 0;
	}

	if (!ramp_enable)
		goto ramp_disable;

	/* Ramp delay can be enabled/disabled only for buck[1234] */
	if (rdev_get_id(rdev) >= S2MPA01_BUCK1 &&
			rdev_get_id(rdev) <= S2MPA01_BUCK4) {
		ret = regmap_update_bits(rdev->regmap, S2MPA01_REG_RAMP1,
					 1 << enable_shift, 1 << enable_shift);
		if (ret) {
			dev_err(&rdev->dev, "failed to enable ramp rate\n");
			return ret;
		}
	}

	ramp_val = get_ramp_delay(ramp_delay);

	return regmap_update_bits(rdev->regmap, ramp_reg, 0x3 << ramp_shift,
				  ramp_val << ramp_shift);

ramp_disable:
	return regmap_update_bits(rdev->regmap, S2MPA01_REG_RAMP1,
				  1 << enable_shift, 0);
}

static const struct regulator_ops s2mpa01_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 const struct regulator_ops s2mpa01_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	= s2mpa01_regulator_set_voltage_time_sel,
	.set_ramp_delay		= s2mpa01_set_ramp_delay,
};

#define regulator_desc_ldo(num, step) {			\
	.name		= "LDO"#num,			\
	.id		= S2MPA01_LDO##num,		\
	.ops		= &s2mpa01_ldo_ops,		\
	.type		= REGULATOR_VOLTAGE,		\
	.owner		= THIS_MODULE,			\
	.min_uV		= MIN_800_MV,			\
	.uV_step	= step,				\
	.n_voltages	= S2MPA01_LDO_N_VOLTAGES,	\
	.vsel_reg	= S2MPA01_REG_L1CTRL + num - 1,	\
	.vsel_mask	= S2MPA01_LDO_VSEL_MASK,	\
	.enable_reg	= S2MPA01_REG_L1CTRL + num - 1,	\
	.enable_mask	= S2MPA01_ENABLE_MASK		\
}

#define regulator_desc_buck1_4(num)	{			\
	.name		= "BUCK"#num,				\
	.id		= S2MPA01_BUCK##num,			\
	.ops		= &s2mpa01_buck_ops,			\
	.type		= REGULATOR_VOLTAGE,			\
	.owner		= THIS_MODULE,				\
	.min_uV		= MIN_600_MV,				\
	.uV_step	= STEP_6_25_MV,				\
	.n_voltages	= S2MPA01_BUCK_N_VOLTAGES,		\
	.ramp_delay	= S2MPA01_RAMP_DELAY,			\
	.vsel_reg	= S2MPA01_REG_B1CTRL2 + (num - 1) * 2,	\
	.vsel_mask	= S2MPA01_BUCK_VSEL_MASK,		\
	.enable_reg	= S2MPA01_REG_B1CTRL1 + (num - 1) * 2,	\
	.enable_mask	= S2MPA01_ENABLE_MASK			\
}

#define regulator_desc_buck5	{				\
	.name		= "BUCK5",				\
	.id		= S2MPA01_BUCK5,			\
	.ops		= &s2mpa01_buck_ops,			\
	.type		= REGULATOR_VOLTAGE,			\
	.owner		= THIS_MODULE,				\
	.min_uV		= MIN_800_MV,				\
	.uV_step	= STEP_6_25_MV,				\
	.n_voltages	= S2MPA01_BUCK_N_VOLTAGES,		\
	.ramp_delay	= S2MPA01_RAMP_DELAY,			\
	.vsel_reg	= S2MPA01_REG_B5CTRL2,			\
	.vsel_mask	= S2MPA01_BUCK_VSEL_MASK,		\
	.enable_reg	= S2MPA01_REG_B5CTRL1,			\
	.enable_mask	= S2MPA01_ENABLE_MASK			\
}

#define regulator_desc_buck6_10(num, min, step) {			\
	.name		= "BUCK"#num,				\
	.id		= S2MPA01_BUCK##num,			\
	.ops		= &s2mpa01_buck_ops,			\
	.type		= REGULATOR_VOLTAGE,			\
	.owner		= THIS_MODULE,				\
	.min_uV		= min,					\
	.uV_step	= step,					\
	.n_voltages	= S2MPA01_BUCK_N_VOLTAGES,		\
	.ramp_delay	= S2MPA01_RAMP_DELAY,			\
	.vsel_reg	= S2MPA01_REG_B6CTRL2 + (num - 6) * 2,	\
	.vsel_mask	= S2MPA01_BUCK_VSEL_MASK,		\
	.enable_reg	= S2MPA01_REG_B6CTRL1 + (num - 6) * 2,	\
	.enable_mask	= S2MPA01_ENABLE_MASK			\
}

static const struct regulator_desc regulators[] = {
	regulator_desc_ldo(1, STEP_25_MV),
	regulator_desc_ldo(2, STEP_50_MV),
	regulator_desc_ldo(3, STEP_50_MV),
	regulator_desc_ldo(4, STEP_50_MV),
	regulator_desc_ldo(5, STEP_50_MV),
	regulator_desc_ldo(6, STEP_25_MV),
	regulator_desc_ldo(7, STEP_50_MV),
	regulator_desc_ldo(8, STEP_50_MV),
	regulator_desc_ldo(9, STEP_50_MV),
	regulator_desc_ldo(10, STEP_50_MV),
	regulator_desc_ldo(11, STEP_25_MV),
	regulator_desc_ldo(12, STEP_50_MV),
	regulator_desc_ldo(13, STEP_50_MV),
	regulator_desc_ldo(14, STEP_50_MV),
	regulator_desc_ldo(15, STEP_50_MV),
	regulator_desc_ldo(16, STEP_50_MV),
	regulator_desc_ldo(17, STEP_50_MV),
	regulator_desc_ldo(18, STEP_50_MV),
	regulator_desc_ldo(19, STEP_50_MV),
	regulator_desc_ldo(20, STEP_50_MV),
	regulator_desc_ldo(21, STEP_50_MV),
	regulator_desc_ldo(22, STEP_25_MV),
	regulator_desc_ldo(23, STEP_25_MV),
	regulator_desc_ldo(24, STEP_50_MV),
	regulator_desc_ldo(25, STEP_50_MV),
	regulator_desc_ldo(26, STEP_50_MV),
	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_10(6, MIN_600_MV, STEP_6_25_MV),
	regulator_desc_buck6_10(7, MIN_600_MV, STEP_6_25_MV),
	regulator_desc_buck6_10(8, MIN_800_MV, STEP_12_5_MV),
	regulator_desc_buck6_10(9, MIN_1500_MV, STEP_12_5_MV),
	regulator_desc_buck6_10(10, MIN_1000_MV, STEP_12_5_MV),
};

static int s2mpa01_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 device_node *reg_np = NULL;
	struct regulator_config config = { };
	struct of_regulator_match *rdata;
	struct s2mpa01_info *s2mpa01;
	int i;

	s2mpa01 = devm_kzalloc(&pdev->dev, sizeof(*s2mpa01), GFP_KERNEL);
	if (!s2mpa01)
		return -ENOMEM;

	rdata = s2mpa01->rdata;
	for (i = 0; i < S2MPA01_REGULATOR_CNT; i++)
		rdata[i].name = regulators[i].name;

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

		of_regulator_match(&pdev->dev, reg_np, rdata,
						S2MPA01_REGULATOR_MAX);
		of_node_put(reg_np);
	}

	platform_set_drvdata(pdev, s2mpa01);

	config.dev = &pdev->dev;
	config.regmap = iodev->regmap_pmic;
	config.driver_data = s2mpa01;

	for (i = 0; i < S2MPA01_REGULATOR_MAX; i++) {
		struct regulator_dev *rdev;
		if (pdata)
			config.init_data = pdata->regulators[i].initdata;
		else
			config.init_data = rdata[i].init_data;

		if (reg_np)
			config.of_node = rdata[i].of_node;

		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 s2mpa01_pmic_id[] = {
	{ "s2mpa01-pmic", 0},
	{ },
};
MODULE_DEVICE_TABLE(platform, s2mpa01_pmic_id);

static struct platform_driver s2mpa01_pmic_driver = {
	.driver = {
		.name = "s2mpa01-pmic",
	},
	.probe = s2mpa01_pmic_probe,
	.id_table = s2mpa01_pmic_id,
};

module_platform_driver(s2mpa01_pmic_driver);

/* Module information */
MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
MODULE_AUTHOR("Sachin Kamat <sachin.kamat@samsung.com>");
MODULE_DESCRIPTION("SAMSUNG S2MPA01 Regulator Driver");
MODULE_LICENSE("GPL");
Commit	Line	Data
4f3fb287 KK	1	// SPDX-License-Identifier: GPL-2.0+
	2	//
	3	// Copyright (c) 2013 Samsung Electronics Co., Ltd
	4	// http://www.samsung.com
f1879271 SK	5
	6	#include <linux/bug.h>
	7	#include <linux/err.h>
	8	#include <linux/gpio.h>
	9	#include <linux/slab.h>
	10	#include <linux/module.h>
	11	#include <linux/of.h>
	12	#include <linux/regmap.h>
	13	#include <linux/platform_device.h>
	14	#include <linux/regulator/driver.h>
	15	#include <linux/regulator/machine.h>
	16	#include <linux/regulator/of_regulator.h>
	17	#include <linux/mfd/samsung/core.h>
	18	#include <linux/mfd/samsung/s2mpa01.h>
	19
	20	#define S2MPA01_REGULATOR_CNT ARRAY_SIZE(regulators)
	21
	22	struct s2mpa01_info {
33f0698a	23	struct of_regulator_match rdata[S2MPA01_REGULATOR_MAX];
f1879271 SK	24	int ramp_delay24;
	25	int ramp_delay3;
	26	int ramp_delay5;
	27	int ramp_delay16;
	28	int ramp_delay7;
	29	int ramp_delay8910;
	30	};
	31
	32	static int get_ramp_delay(int ramp_delay)
	33	{
	34	unsigned char cnt = 0;
	35
	36	ramp_delay /= 6250;
	37
	38	while (true) {
	39	ramp_delay = ramp_delay >> 1;
	40	if (ramp_delay == 0)
	41	break;
	42	cnt++;
	43	}
	44
	45	if (cnt > 3)
	46	cnt = 3;
	47
	48	return cnt;
	49	}
	50
	51	static int s2mpa01_regulator_set_voltage_time_sel(struct regulator_dev *rdev,
	52	unsigned int old_selector,
	53	unsigned int new_selector)
	54	{
	55	struct s2mpa01_info *s2mpa01 = rdev_get_drvdata(rdev);
	56	unsigned int ramp_delay = 0;
	57	int old_volt, new_volt;
	58
0608032a	59	switch (rdev_get_id(rdev)) {
f1879271 SK	60	case S2MPA01_BUCK2:
	61	case S2MPA01_BUCK4:
	62	ramp_delay = s2mpa01->ramp_delay24;
	63	break;
	64	case S2MPA01_BUCK3:
	65	ramp_delay = s2mpa01->ramp_delay3;
	66	break;
	67	case S2MPA01_BUCK5:
	68	ramp_delay = s2mpa01->ramp_delay5;
	69	break;
	70	case S2MPA01_BUCK1:
	71	case S2MPA01_BUCK6:
	72	ramp_delay = s2mpa01->ramp_delay16;
	73	break;
	74	case S2MPA01_BUCK7:
	75	ramp_delay = s2mpa01->ramp_delay7;
	76	break;
	77	case S2MPA01_BUCK8:
	78	case S2MPA01_BUCK9:
	79	case S2MPA01_BUCK10:
	80	ramp_delay = s2mpa01->ramp_delay8910;
	81	break;
	82	}
	83
	84	if (ramp_delay == 0)
	85	ramp_delay = rdev->desc->ramp_delay;
	86
	87	old_volt = rdev->desc->min_uV + (rdev->desc->uV_step * old_selector);
	88	new_volt = rdev->desc->min_uV + (rdev->desc->uV_step * new_selector);
	89
	90	return DIV_ROUND_UP(abs(new_volt - old_volt), ramp_delay);
	91	}
	92
	93	static int s2mpa01_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
	94	{
	95	struct s2mpa01_info *s2mpa01 = rdev_get_drvdata(rdev);
	96	unsigned int ramp_val, ramp_shift, ramp_reg = S2MPA01_REG_RAMP2;
	97	unsigned int ramp_enable = 1, enable_shift = 0;
	98	int ret;
	99
0608032a	100	switch (rdev_get_id(rdev)) {
f1879271 SK	101	case S2MPA01_BUCK1:
	102	enable_shift = S2MPA01_BUCK1_RAMP_EN_SHIFT;
	103	if (!ramp_delay) {
	104	ramp_enable = 0;
	105	break;
	106	}
	107
	108	if (ramp_delay > s2mpa01->ramp_delay16)
	109	s2mpa01->ramp_delay16 = ramp_delay;
	110	else
	111	ramp_delay = s2mpa01->ramp_delay16;
	112
	113	ramp_shift = S2MPA01_BUCK16_RAMP_SHIFT;
f1879271 SK	114	break;
	115	case S2MPA01_BUCK2:
	116	enable_shift = S2MPA01_BUCK2_RAMP_EN_SHIFT;
	117	if (!ramp_delay) {
	118	ramp_enable = 0;
	119	break;
	120	}
	121
	122	if (ramp_delay > s2mpa01->ramp_delay24)
	123	s2mpa01->ramp_delay24 = ramp_delay;
	124	else
	125	ramp_delay = s2mpa01->ramp_delay24;
	126
	127	ramp_shift = S2MPA01_BUCK24_RAMP_SHIFT;
	128	ramp_reg = S2MPA01_REG_RAMP1;
	129	break;
	130	case S2MPA01_BUCK3:
	131	enable_shift = S2MPA01_BUCK3_RAMP_EN_SHIFT;
	132	if (!ramp_delay) {
	133	ramp_enable = 0;
	134	break;
	135	}
	136
	137	s2mpa01->ramp_delay3 = ramp_delay;
	138	ramp_shift = S2MPA01_BUCK3_RAMP_SHIFT;
	139	ramp_reg = S2MPA01_REG_RAMP1;
	140	break;
	141	case S2MPA01_BUCK4:
	142	enable_shift = S2MPA01_BUCK4_RAMP_EN_SHIFT;
	143	if (!ramp_delay) {
	144	ramp_enable = 0;
	145	break;
	146	}
	147
	148	if (ramp_delay > s2mpa01->ramp_delay24)
	149	s2mpa01->ramp_delay24 = ramp_delay;
	150	else
	151	ramp_delay = s2mpa01->ramp_delay24;
	152
	153	ramp_shift = S2MPA01_BUCK24_RAMP_SHIFT;
	154	ramp_reg = S2MPA01_REG_RAMP1;
	155	break;
	156	case S2MPA01_BUCK5:
	157	s2mpa01->ramp_delay5 = ramp_delay;
	158	ramp_shift = S2MPA01_BUCK5_RAMP_SHIFT;
	159	break;
	160	case S2MPA01_BUCK6:
	161	if (ramp_delay > s2mpa01->ramp_delay16)
	162	s2mpa01->ramp_delay16 = ramp_delay;
	163	else
	164	ramp_delay = s2mpa01->ramp_delay16;
	165
	166	ramp_shift = S2MPA01_BUCK16_RAMP_SHIFT;
	167	break;
	168	case S2MPA01_BUCK7:
	169	s2mpa01->ramp_delay7 = ramp_delay;
	170	ramp_shift = S2MPA01_BUCK7_RAMP_SHIFT;
	171	break;
	172	case S2MPA01_BUCK8:
	173	case S2MPA01_BUCK9:
	174	case S2MPA01_BUCK10:
	175	if (ramp_delay > s2mpa01->ramp_delay8910)
	176	s2mpa01->ramp_delay8910 = ramp_delay;
	177	else
178	ramp_delay = s2mpa01->ramp_delay8910;
179
180	ramp_shift = S2MPA01_BUCK8910_RAMP_SHIFT;
181	break;
182	default:
183	return 0;
184	}
185
186	if (!ramp_enable)
187	goto ramp_disable;
188
51e2fc0a KK	189	/* Ramp delay can be enabled/disabled only for buck[1234] */
	190	if (rdev_get_id(rdev) >= S2MPA01_BUCK1 &&
	191	rdev_get_id(rdev) <= S2MPA01_BUCK4) {
	192	ret = regmap_update_bits(rdev->regmap, S2MPA01_REG_RAMP1,
	193	1 << enable_shift, 1 << enable_shift);
	194	if (ret) {
	195	dev_err(&rdev->dev, "failed to enable ramp rate\n");
	196	return ret;
	197	}
f1879271 SK	198	}
	199
	200	ramp_val = get_ramp_delay(ramp_delay);
	201
	202	return regmap_update_bits(rdev->regmap, ramp_reg, 0x3 << ramp_shift,
	203	ramp_val << ramp_shift);
	204
	205	ramp_disable:
	206	return regmap_update_bits(rdev->regmap, S2MPA01_REG_RAMP1,
	207	1 << enable_shift, 0);
	208	}
	209
f465bf9b	210	static const struct regulator_ops s2mpa01_ldo_ops = {
f1879271 SK	211	.list_voltage = regulator_list_voltage_linear,
	212	.map_voltage = regulator_map_voltage_linear,
	213	.is_enabled = regulator_is_enabled_regmap,
	214	.enable = regulator_enable_regmap,
	215	.disable = regulator_disable_regmap,
	216	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	217	.set_voltage_sel = regulator_set_voltage_sel_regmap,
	218	.set_voltage_time_sel = regulator_set_voltage_time_sel,
	219	};
	220
f465bf9b	221	static const struct regulator_ops s2mpa01_buck_ops = {
f1879271 SK	222	.list_voltage = regulator_list_voltage_linear,
	223	.map_voltage = regulator_map_voltage_linear,
	224	.is_enabled = regulator_is_enabled_regmap,
	225	.enable = regulator_enable_regmap,
	226	.disable = regulator_disable_regmap,
	227	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	228	.set_voltage_sel = regulator_set_voltage_sel_regmap,
	229	.set_voltage_time_sel = s2mpa01_regulator_set_voltage_time_sel,
	230	.set_ramp_delay = s2mpa01_set_ramp_delay,
	231	};
	232
d264fd45	233	#define regulator_desc_ldo(num, step) { \
f1879271 SK	234	.name = "LDO"#num, \
	235	.id = S2MPA01_LDO##num, \
	236	.ops = &s2mpa01_ldo_ops, \
	237	.type = REGULATOR_VOLTAGE, \
	238	.owner = THIS_MODULE, \
0e4f4178	239	.min_uV = MIN_800_MV, \
d264fd45	240	.uV_step = step, \
f1879271 SK	241	.n_voltages = S2MPA01_LDO_N_VOLTAGES, \
	242	.vsel_reg = S2MPA01_REG_L1CTRL + num - 1, \
	243	.vsel_mask = S2MPA01_LDO_VSEL_MASK, \
	244	.enable_reg = S2MPA01_REG_L1CTRL + num - 1, \
	245	.enable_mask = S2MPA01_ENABLE_MASK \
	246	}
	247
	248	#define regulator_desc_buck1_4(num) { \
	249	.name = "BUCK"#num, \
	250	.id = S2MPA01_BUCK##num, \
	251	.ops = &s2mpa01_buck_ops, \
	252	.type = REGULATOR_VOLTAGE, \
	253	.owner = THIS_MODULE, \
0e4f4178 ADK	254	.min_uV = MIN_600_MV, \
0e4f4178 ADK	255	.uV_step = STEP_6_25_MV, \
f1879271 SK	256	.n_voltages = S2MPA01_BUCK_N_VOLTAGES, \
	257	.ramp_delay = S2MPA01_RAMP_DELAY, \
	258	.vsel_reg = S2MPA01_REG_B1CTRL2 + (num - 1) * 2, \
	259	.vsel_mask = S2MPA01_BUCK_VSEL_MASK, \
	260	.enable_reg = S2MPA01_REG_B1CTRL1 + (num - 1) * 2, \
	261	.enable_mask = S2MPA01_ENABLE_MASK \
	262	}
	263
	264	#define regulator_desc_buck5 { \
	265	.name = "BUCK5", \
	266	.id = S2MPA01_BUCK5, \
	267	.ops = &s2mpa01_buck_ops, \
	268	.type = REGULATOR_VOLTAGE, \
	269	.owner = THIS_MODULE, \
0e4f4178 ADK	270	.min_uV = MIN_800_MV, \
0e4f4178 ADK	271	.uV_step = STEP_6_25_MV, \
f1879271 SK	272	.n_voltages = S2MPA01_BUCK_N_VOLTAGES, \
	273	.ramp_delay = S2MPA01_RAMP_DELAY, \
	274	.vsel_reg = S2MPA01_REG_B5CTRL2, \
	275	.vsel_mask = S2MPA01_BUCK_VSEL_MASK, \
	276	.enable_reg = S2MPA01_REG_B5CTRL1, \
	277	.enable_mask = S2MPA01_ENABLE_MASK \
	278	}
	279
d264fd45	280	#define regulator_desc_buck6_10(num, min, step) { \
f1879271 SK	281	.name = "BUCK"#num, \
	282	.id = S2MPA01_BUCK##num, \
	283	.ops = &s2mpa01_buck_ops, \
	284	.type = REGULATOR_VOLTAGE, \
	285	.owner = THIS_MODULE, \
d264fd45 ADK	286	.min_uV = min, \
d264fd45 ADK	287	.uV_step = step, \
f1879271 SK	288	.n_voltages = S2MPA01_BUCK_N_VOLTAGES, \
	289	.ramp_delay = S2MPA01_RAMP_DELAY, \
	290	.vsel_reg = S2MPA01_REG_B6CTRL2 + (num - 6) * 2, \
	291	.vsel_mask = S2MPA01_BUCK_VSEL_MASK, \
	292	.enable_reg = S2MPA01_REG_B6CTRL1 + (num - 6) * 2, \
	293	.enable_mask = S2MPA01_ENABLE_MASK \
	294	}
	295
4b8e43f2	296	static const struct regulator_desc regulators[] = {
d264fd45 ADK	297	regulator_desc_ldo(1, STEP_25_MV),
	298	regulator_desc_ldo(2, STEP_50_MV),
	299	regulator_desc_ldo(3, STEP_50_MV),
	300	regulator_desc_ldo(4, STEP_50_MV),
	301	regulator_desc_ldo(5, STEP_50_MV),
	302	regulator_desc_ldo(6, STEP_25_MV),
	303	regulator_desc_ldo(7, STEP_50_MV),
	304	regulator_desc_ldo(8, STEP_50_MV),
	305	regulator_desc_ldo(9, STEP_50_MV),
	306	regulator_desc_ldo(10, STEP_50_MV),
	307	regulator_desc_ldo(11, STEP_25_MV),
	308	regulator_desc_ldo(12, STEP_50_MV),
	309	regulator_desc_ldo(13, STEP_50_MV),
	310	regulator_desc_ldo(14, STEP_50_MV),
	311	regulator_desc_ldo(15, STEP_50_MV),
	312	regulator_desc_ldo(16, STEP_50_MV),
	313	regulator_desc_ldo(17, STEP_50_MV),
	314	regulator_desc_ldo(18, STEP_50_MV),
	315	regulator_desc_ldo(19, STEP_50_MV),
	316	regulator_desc_ldo(20, STEP_50_MV),
	317	regulator_desc_ldo(21, STEP_50_MV),
	318	regulator_desc_ldo(22, STEP_25_MV),
	319	regulator_desc_ldo(23, STEP_25_MV),
	320	regulator_desc_ldo(24, STEP_50_MV),
	321	regulator_desc_ldo(25, STEP_50_MV),
	322	regulator_desc_ldo(26, STEP_50_MV),
f1879271 SK	323	regulator_desc_buck1_4(1),
	324	regulator_desc_buck1_4(2),
	325	regulator_desc_buck1_4(3),
	326	regulator_desc_buck1_4(4),
	327	regulator_desc_buck5,
d264fd45 ADK	328	regulator_desc_buck6_10(6, MIN_600_MV, STEP_6_25_MV),
	329	regulator_desc_buck6_10(7, MIN_600_MV, STEP_6_25_MV),
	330	regulator_desc_buck6_10(8, MIN_800_MV, STEP_12_5_MV),
	331	regulator_desc_buck6_10(9, MIN_1500_MV, STEP_12_5_MV),
	332	regulator_desc_buck6_10(10, MIN_1000_MV, STEP_12_5_MV),
f1879271 SK	333	};
	334
	335	static int s2mpa01_pmic_probe(struct platform_device *pdev)
	336	{
	337	struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent);
	338	struct sec_platform_data *pdata = dev_get_platdata(iodev->dev);
f1879271 SK	339	struct device_node *reg_np = NULL;
f1879271 SK	340	struct regulator_config config = { };
33f0698a	341	struct of_regulator_match *rdata;
f1879271 SK	342	struct s2mpa01_info *s2mpa01;
	343	int i;
	344
	345	s2mpa01 = devm_kzalloc(&pdev->dev, sizeof(*s2mpa01), GFP_KERNEL);
	346	if (!s2mpa01)
	347	return -ENOMEM;
	348
33f0698a	349	rdata = s2mpa01->rdata;
f1879271 SK	350	for (i = 0; i < S2MPA01_REGULATOR_CNT; i++)
	351	rdata[i].name = regulators[i].name;
	352
	353	if (iodev->dev->of_node) {
	354	reg_np = of_get_child_by_name(iodev->dev->of_node,
	355	"regulators");
5339c34f KK	356	if (!reg_np) {
	357	dev_err(&pdev->dev,
	358	"could not find regulators sub-node\n");
	359	return -EINVAL;
	360	}
f1879271 SK	361
	362	of_regulator_match(&pdev->dev, reg_np, rdata,
	363	S2MPA01_REGULATOR_MAX);
	364	of_node_put(reg_np);
	365	}
	366
	367	platform_set_drvdata(pdev, s2mpa01);
	368
	369	config.dev = &pdev->dev;
	370	config.regmap = iodev->regmap_pmic;
	371	config.driver_data = s2mpa01;
	372
	373	for (i = 0; i < S2MPA01_REGULATOR_MAX; i++) {
	374	struct regulator_dev *rdev;
	375	if (pdata)
	376	config.init_data = pdata->regulators[i].initdata;
	377	else
	378	config.init_data = rdata[i].init_data;
	379
	380	if (reg_np)
	381	config.of_node = rdata[i].of_node;
	382
	383	rdev = devm_regulator_register(&pdev->dev,
	384	&regulators[i], &config);
	385	if (IS_ERR(rdev)) {
	386	dev_err(&pdev->dev, "regulator init failed for %d\n",
	387	i);
	388	return PTR_ERR(rdev);
	389	}
	390	}
	391
	392	return 0;
	393	}
	394
	395	static const struct platform_device_id s2mpa01_pmic_id[] = {
	396	{ "s2mpa01-pmic", 0},
	397	{ },
	398	};
	399	MODULE_DEVICE_TABLE(platform, s2mpa01_pmic_id);
	400
	401	static struct platform_driver s2mpa01_pmic_driver = {
	402	.driver = {
	403	.name = "s2mpa01-pmic",
f1879271 SK	404	},
	405	.probe = s2mpa01_pmic_probe,
	406	.id_table = s2mpa01_pmic_id,
	407	};
	408
	409	module_platform_driver(s2mpa01_pmic_driver);
	410
	411	/* Module information */
	412	MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
	413	MODULE_AUTHOR("Sachin Kamat <sachin.kamat@samsung.com>");
	414	MODULE_DESCRIPTION("SAMSUNG S2MPA01 Regulator Driver");
	415	MODULE_LICENSE("GPL");