[linux-2.6-block.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/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/s2mps11.h>

#define S2MPS11_REGULATOR_CNT ARRAY_SIZE(regulators)

struct s2mps11_info {
	struct regulator_dev *rdev[S2MPS11_REGULATOR_MAX];

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

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 s2mps11_regulator_set_voltage_time_sel(struct regulator_dev *rdev,
				   unsigned int old_selector,
				   unsigned int new_selector)
{
	struct s2mps11_info *s2mps11 = rdev_get_drvdata(rdev);
	unsigned int ramp_delay = 0;
	int old_volt, new_volt;

	switch (rdev->desc->id) {
	case S2MPS11_BUCK2:
		ramp_delay = s2mps11->ramp_delay2;
		break;
	case S2MPS11_BUCK3:
		ramp_delay = s2mps11->ramp_delay34;
		break;
	case S2MPS11_BUCK4:
		ramp_delay = s2mps11->ramp_delay34;
		break;
	case S2MPS11_BUCK5:
		ramp_delay = s2mps11->ramp_delay5;
		break;
	case S2MPS11_BUCK6:
	case S2MPS11_BUCK1:
		ramp_delay = s2mps11->ramp_delay16;
		break;
	case S2MPS11_BUCK7:
	case S2MPS11_BUCK8:
	case S2MPS11_BUCK10:
		ramp_delay = s2mps11->ramp_delay7810;
		break;
	case S2MPS11_BUCK9:
		ramp_delay = s2mps11->ramp_delay9;
	}

	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 s2mps11_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
{
	struct s2mps11_info *s2mps11 = rdev_get_drvdata(rdev);
	unsigned int ramp_val, ramp_shift, ramp_reg = S2MPS11_REG_RAMP_BUCK;
	unsigned int ramp_enable = 1, enable_shift = 0;
	int ret;

	switch (rdev->desc->id) {
	case S2MPS11_BUCK1:
		if (ramp_delay > s2mps11->ramp_delay16)
			s2mps11->ramp_delay16 = ramp_delay;
		else
			ramp_delay = s2mps11->ramp_delay16;

		ramp_shift = S2MPS11_BUCK16_RAMP_SHIFT;
		break;
	case S2MPS11_BUCK2:
		enable_shift = S2MPS11_BUCK2_RAMP_EN_SHIFT;
		if (!ramp_delay) {
			ramp_enable = 0;
			break;
		}

		s2mps11->ramp_delay2 = ramp_delay;
		ramp_shift = S2MPS11_BUCK2_RAMP_SHIFT;
		ramp_reg = S2MPS11_REG_RAMP;
		break;
	case S2MPS11_BUCK3:
		enable_shift = S2MPS11_BUCK3_RAMP_EN_SHIFT;
		if (!ramp_delay) {
			ramp_enable = 0;
			break;
		}

		if (ramp_delay > s2mps11->ramp_delay34)
			s2mps11->ramp_delay34 = ramp_delay;
		else
			ramp_delay = s2mps11->ramp_delay34;

		ramp_shift = S2MPS11_BUCK34_RAMP_SHIFT;
		ramp_reg = S2MPS11_REG_RAMP;
		break;
	case S2MPS11_BUCK4:
		enable_shift = S2MPS11_BUCK4_RAMP_EN_SHIFT;
		if (!ramp_delay) {
			ramp_enable = 0;
			break;
		}

		if (ramp_delay > s2mps11->ramp_delay34)
			s2mps11->ramp_delay34 = ramp_delay;
		else
			ramp_delay = s2mps11->ramp_delay34;

		ramp_shift = S2MPS11_BUCK34_RAMP_SHIFT;
		ramp_reg = S2MPS11_REG_RAMP;
		break;
	case S2MPS11_BUCK5:
		s2mps11->ramp_delay5 = ramp_delay;
		ramp_shift = S2MPS11_BUCK5_RAMP_SHIFT;
		break;
	case S2MPS11_BUCK6:
		enable_shift = S2MPS11_BUCK6_RAMP_EN_SHIFT;
		if (!ramp_delay) {
			ramp_enable = 0;
			break;
		}

		if (ramp_delay > s2mps11->ramp_delay16)
			s2mps11->ramp_delay16 = ramp_delay;
		else
			ramp_delay = s2mps11->ramp_delay16;

		ramp_shift = S2MPS11_BUCK16_RAMP_SHIFT;
		break;
	case S2MPS11_BUCK7:
	case S2MPS11_BUCK8:
	case S2MPS11_BUCK10:
		if (ramp_delay > s2mps11->ramp_delay7810)
			s2mps11->ramp_delay7810 = ramp_delay;
		else
			ramp_delay = s2mps11->ramp_delay7810;

		ramp_shift = S2MPS11_BUCK7810_RAMP_SHIFT;
		break;
	case S2MPS11_BUCK9:
		s2mps11->ramp_delay9 = ramp_delay;
		ramp_shift = S2MPS11_BUCK9_RAMP_SHIFT;
		break;
	default:
		return 0;
	}

	if (!ramp_enable)
		goto ramp_disable;

	if (enable_shift) {
		ret = regmap_update_bits(rdev->regmap, S2MPS11_REG_RAMP,
					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, S2MPS11_REG_RAMP,
				  1 << enable_shift, 0);
}

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	= s2mps11_regulator_set_voltage_time_sel,
	.set_ramp_delay		= s2mps11_set_ramp_delay,
};

#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,		\
	.ramp_delay	= S2MPS11_RAMP_DELAY,			\
	.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,		\
	.ramp_delay	= S2MPS11_RAMP_DELAY,			\
	.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,		\
	.ramp_delay	= S2MPS11_RAMP_DELAY,			\
	.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,		\
	.ramp_delay	= S2MPS11_RAMP_DELAY,			\
	.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,		\
	.ramp_delay	= S2MPS11_RAMP_DELAY,			\
	.vsel_reg	= S2MPS11_REG_B10CTRL2,			\
	.vsel_mask	= S2MPS11_BUCK_VSEL_MASK,		\
	.enable_reg	= S2MPS11_REG_B10CTRL1,			\
	.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 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 of_regulator_match rdata[S2MPS11_REGULATOR_MAX];
	struct device_node *reg_np = NULL;
	struct regulator_config config = { };
	struct s2mps11_info *s2mps11;
	int i, ret;

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

	if (!iodev->dev->of_node) {
		if (pdata) {
			goto common_reg;
		} else {
			dev_err(pdev->dev.parent,
				"Platform data or DT node not supplied\n");
			return -ENODEV;
		}
	}

	for (i = 0; i < S2MPS11_REGULATOR_CNT; i++)
		rdata[i].name = regulators[i].name;

	reg_np = of_find_node_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, S2MPS11_REGULATOR_MAX);

common_reg:
	platform_set_drvdata(pdev, s2mps11);

	config.dev = &pdev->dev;
	config.regmap = iodev->regmap;
	config.driver_data = s2mps11;
	for (i = 0; i < S2MPS11_REGULATOR_MAX; i++) {
		if (!reg_np) {
			config.init_data = pdata->regulators[i].initdata;
		} else {
			config.init_data = rdata[i].init_data;
			config.of_node = rdata[i].of_node;
		}

		s2mps11->rdev[i] = devm_regulator_register(&pdev->dev,
						&regulators[i], &config);
		if (IS_ERR(s2mps11->rdev[i])) {
			ret = PTR_ERR(s2mps11->rdev[i]);
			dev_err(&pdev->dev, "regulator init failed for %d\n",
				i);
			return ret;
		}
	}

	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,
	.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>
cb74685e SK	15	#include <linux/err.h>
	16	#include <linux/gpio.h>
	17	#include <linux/slab.h>
	18	#include <linux/module.h>
a50c6b32	19	#include <linux/of.h>
939c0277	20	#include <linux/regmap.h>
cb74685e SK	21	#include <linux/platform_device.h>
	22	#include <linux/regulator/driver.h>
	23	#include <linux/regulator/machine.h>
a50c6b32	24	#include <linux/regulator/of_regulator.h>
cb74685e SK	25	#include <linux/mfd/samsung/core.h>
	26	#include <linux/mfd/samsung/s2mps11.h>
	27
a50c6b32 YSB	28	#define S2MPS11_REGULATOR_CNT ARRAY_SIZE(regulators)
a50c6b32 YSB	29
cb74685e	30	struct s2mps11_info {
ad46ed14	31	struct regulator_dev *rdev[S2MPS11_REGULATOR_MAX];
cb74685e SK	32
	33	int ramp_delay2;
	34	int ramp_delay34;
	35	int ramp_delay5;
	36	int ramp_delay16;
	37	int ramp_delay7810;
	38	int ramp_delay9;
cb74685e SK	39	};
	40
	41	static int get_ramp_delay(int ramp_delay)
	42	{
	43	unsigned char cnt = 0;
	44
90068348	45	ramp_delay /= 6250;
cb74685e SK	46
	47	while (true) {
	48	ramp_delay = ramp_delay >> 1;
	49	if (ramp_delay == 0)
	50	break;
	51	cnt++;
	52	}
f8f1d48b AL	53
	54	if (cnt > 3)
	55	cnt = 3;
	56
cb74685e SK	57	return cnt;
	58	}
	59
1e1598ed YSB	60	static int s2mps11_regulator_set_voltage_time_sel(struct regulator_dev *rdev,
	61	unsigned int old_selector,
	62	unsigned int new_selector)
	63	{
	64	struct s2mps11_info *s2mps11 = rdev_get_drvdata(rdev);
	65	unsigned int ramp_delay = 0;
	66	int old_volt, new_volt;
	67
	68	switch (rdev->desc->id) {
	69	case S2MPS11_BUCK2:
1e1598ed YSB	70	ramp_delay = s2mps11->ramp_delay2;
	71	break;
	72	case S2MPS11_BUCK3:
1e1598ed YSB	73	ramp_delay = s2mps11->ramp_delay34;
	74	break;
	75	case S2MPS11_BUCK4:
1e1598ed YSB	76	ramp_delay = s2mps11->ramp_delay34;
	77	break;
	78	case S2MPS11_BUCK5:
	79	ramp_delay = s2mps11->ramp_delay5;
	80	break;
	81	case S2MPS11_BUCK6:
1e1598ed YSB	82	case S2MPS11_BUCK1:
	83	ramp_delay = s2mps11->ramp_delay16;
	84	break;
	85	case S2MPS11_BUCK7:
	86	case S2MPS11_BUCK8:
	87	case S2MPS11_BUCK10:
	88	ramp_delay = s2mps11->ramp_delay7810;
	89	break;
	90	case S2MPS11_BUCK9:
	91	ramp_delay = s2mps11->ramp_delay9;
	92	}
	93
	94	if (ramp_delay == 0)
	95	ramp_delay = rdev->desc->ramp_delay;
	96
	97	old_volt = rdev->desc->min_uV + (rdev->desc->uV_step * old_selector);
	98	new_volt = rdev->desc->min_uV + (rdev->desc->uV_step * new_selector);
	99
	100	return DIV_ROUND_UP(abs(new_volt - old_volt), ramp_delay);
	101	}
	102
939c0277 YSB	103	static int s2mps11_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
	104	{
	105	struct s2mps11_info *s2mps11 = rdev_get_drvdata(rdev);
	106	unsigned int ramp_val, ramp_shift, ramp_reg = S2MPS11_REG_RAMP_BUCK;
	107	unsigned int ramp_enable = 1, enable_shift = 0;
	108	int ret;
	109
	110	switch (rdev->desc->id) {
	111	case S2MPS11_BUCK1:
	112	if (ramp_delay > s2mps11->ramp_delay16)
	113	s2mps11->ramp_delay16 = ramp_delay;
	114	else
	115	ramp_delay = s2mps11->ramp_delay16;
	116
	117	ramp_shift = S2MPS11_BUCK16_RAMP_SHIFT;
	118	break;
	119	case S2MPS11_BUCK2:
	120	enable_shift = S2MPS11_BUCK2_RAMP_EN_SHIFT;
	121	if (!ramp_delay) {
	122	ramp_enable = 0;
	123	break;
	124	}
	125
	126	s2mps11->ramp_delay2 = ramp_delay;
	127	ramp_shift = S2MPS11_BUCK2_RAMP_SHIFT;
	128	ramp_reg = S2MPS11_REG_RAMP;
	129	break;
	130	case S2MPS11_BUCK3:
	131	enable_shift = S2MPS11_BUCK3_RAMP_EN_SHIFT;
	132	if (!ramp_delay) {
	133	ramp_enable = 0;
	134	break;
	135	}
	136
	137	if (ramp_delay > s2mps11->ramp_delay34)
	138	s2mps11->ramp_delay34 = ramp_delay;
	139	else
	140	ramp_delay = s2mps11->ramp_delay34;
	141
	142	ramp_shift = S2MPS11_BUCK34_RAMP_SHIFT;
	143	ramp_reg = S2MPS11_REG_RAMP;
	144	break;
	145	case S2MPS11_BUCK4:
	146	enable_shift = S2MPS11_BUCK4_RAMP_EN_SHIFT;
	147	if (!ramp_delay) {
	148	ramp_enable = 0;
	149	break;
	150	}
	151
	152	if (ramp_delay > s2mps11->ramp_delay34)
	153	s2mps11->ramp_delay34 = ramp_delay;
	154	else
	155	ramp_delay = s2mps11->ramp_delay34;
	156
	157	ramp_shift = S2MPS11_BUCK34_RAMP_SHIFT;
	158	ramp_reg = S2MPS11_REG_RAMP;
	159	break;
	160	case S2MPS11_BUCK5:
	161	s2mps11->ramp_delay5 = ramp_delay;
	162	ramp_shift = S2MPS11_BUCK5_RAMP_SHIFT;
	163	break;
	164	case S2MPS11_BUCK6:
	165	enable_shift = S2MPS11_BUCK6_RAMP_EN_SHIFT;
	166	if (!ramp_delay) {
167	ramp_enable = 0;
168	break;
169	}
170
171	if (ramp_delay > s2mps11->ramp_delay16)
172	s2mps11->ramp_delay16 = ramp_delay;
173	else
174	ramp_delay = s2mps11->ramp_delay16;
175
176	ramp_shift = S2MPS11_BUCK16_RAMP_SHIFT;
177	break;
178	case S2MPS11_BUCK7:
179	case S2MPS11_BUCK8:
180	case S2MPS11_BUCK10:
181	if (ramp_delay > s2mps11->ramp_delay7810)
182	s2mps11->ramp_delay7810 = ramp_delay;
183	else
184	ramp_delay = s2mps11->ramp_delay7810;
185
186	ramp_shift = S2MPS11_BUCK7810_RAMP_SHIFT;
187	break;
188	case S2MPS11_BUCK9:
189	s2mps11->ramp_delay9 = ramp_delay;
190	ramp_shift = S2MPS11_BUCK9_RAMP_SHIFT;
191	break;
192	default:
193	return 0;
194	}
195
196	if (!ramp_enable)
197	goto ramp_disable;
198
199	if (enable_shift) {
200	ret = regmap_update_bits(rdev->regmap, S2MPS11_REG_RAMP,
201	1 << enable_shift, 1 << enable_shift);
202	if (ret) {
203	dev_err(&rdev->dev, "failed to enable ramp rate\n");
204	return ret;
205	}
206	}
207
208	ramp_val = get_ramp_delay(ramp_delay);
209
f8f1d48b AL	210	return regmap_update_bits(rdev->regmap, ramp_reg, 0x3 << ramp_shift,
f8f1d48b AL	211	ramp_val << ramp_shift);
939c0277 YSB	212
939c0277 YSB	213	ramp_disable:
80853304 AL	214	return regmap_update_bits(rdev->regmap, S2MPS11_REG_RAMP,
80853304 AL	215	1 << enable_shift, 0);
939c0277 YSB	216	}
939c0277 YSB	217
cb74685e SK	218	static struct regulator_ops s2mps11_ldo_ops = {
	219	.list_voltage = regulator_list_voltage_linear,
	220	.map_voltage = regulator_map_voltage_linear,
	221	.is_enabled = regulator_is_enabled_regmap,
	222	.enable = regulator_enable_regmap,
	223	.disable = regulator_disable_regmap,
	224	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	225	.set_voltage_sel = regulator_set_voltage_sel_regmap,
	226	.set_voltage_time_sel = regulator_set_voltage_time_sel,
	227	};
	228
	229	static struct regulator_ops s2mps11_buck_ops = {
	230	.list_voltage = regulator_list_voltage_linear,
	231	.map_voltage = regulator_map_voltage_linear,
	232	.is_enabled = regulator_is_enabled_regmap,
	233	.enable = regulator_enable_regmap,
	234	.disable = regulator_disable_regmap,
	235	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	236	.set_voltage_sel = regulator_set_voltage_sel_regmap,
1e1598ed	237	.set_voltage_time_sel = s2mps11_regulator_set_voltage_time_sel,
939c0277	238	.set_ramp_delay = s2mps11_set_ramp_delay,
cb74685e SK	239	};
	240
	241	#define regulator_desc_ldo1(num) { \
	242	.name = "LDO"#num, \
	243	.id = S2MPS11_LDO##num, \
	244	.ops = &s2mps11_ldo_ops, \
	245	.type = REGULATOR_VOLTAGE, \
	246	.owner = THIS_MODULE, \
	247	.min_uV = S2MPS11_LDO_MIN, \
	248	.uV_step = S2MPS11_LDO_STEP1, \
	249	.n_voltages = S2MPS11_LDO_N_VOLTAGES, \
	250	.vsel_reg = S2MPS11_REG_L1CTRL + num - 1, \
2693fcab	251	.vsel_mask = S2MPS11_LDO_VSEL_MASK, \
cb74685e SK	252	.enable_reg = S2MPS11_REG_L1CTRL + num - 1, \
	253	.enable_mask = S2MPS11_ENABLE_MASK \
	254	}
	255	#define regulator_desc_ldo2(num) { \
	256	.name = "LDO"#num, \
	257	.id = S2MPS11_LDO##num, \
	258	.ops = &s2mps11_ldo_ops, \
	259	.type = REGULATOR_VOLTAGE, \
	260	.owner = THIS_MODULE, \
	261	.min_uV = S2MPS11_LDO_MIN, \
	262	.uV_step = S2MPS11_LDO_STEP2, \
	263	.n_voltages = S2MPS11_LDO_N_VOLTAGES, \
	264	.vsel_reg = S2MPS11_REG_L1CTRL + num - 1, \
2693fcab	265	.vsel_mask = S2MPS11_LDO_VSEL_MASK, \
cb74685e SK	266	.enable_reg = S2MPS11_REG_L1CTRL + num - 1, \
	267	.enable_mask = S2MPS11_ENABLE_MASK \
	268	}
	269
	270	#define regulator_desc_buck1_4(num) { \
	271	.name = "BUCK"#num, \
	272	.id = S2MPS11_BUCK##num, \
	273	.ops = &s2mps11_buck_ops, \
	274	.type = REGULATOR_VOLTAGE, \
	275	.owner = THIS_MODULE, \
	276	.min_uV = S2MPS11_BUCK_MIN1, \
	277	.uV_step = S2MPS11_BUCK_STEP1, \
	278	.n_voltages = S2MPS11_BUCK_N_VOLTAGES, \
90068348	279	.ramp_delay = S2MPS11_RAMP_DELAY, \
cb74685e	280	.vsel_reg = S2MPS11_REG_B1CTRL2 + (num - 1) * 2, \
2693fcab	281	.vsel_mask = S2MPS11_BUCK_VSEL_MASK, \
cb74685e SK	282	.enable_reg = S2MPS11_REG_B1CTRL1 + (num - 1) * 2, \
	283	.enable_mask = S2MPS11_ENABLE_MASK \
	284	}
	285
	286	#define regulator_desc_buck5 { \
	287	.name = "BUCK5", \
	288	.id = S2MPS11_BUCK5, \
	289	.ops = &s2mps11_buck_ops, \
	290	.type = REGULATOR_VOLTAGE, \
	291	.owner = THIS_MODULE, \
	292	.min_uV = S2MPS11_BUCK_MIN1, \
	293	.uV_step = S2MPS11_BUCK_STEP1, \
	294	.n_voltages = S2MPS11_BUCK_N_VOLTAGES, \
90068348	295	.ramp_delay = S2MPS11_RAMP_DELAY, \
cb74685e	296	.vsel_reg = S2MPS11_REG_B5CTRL2, \
2693fcab	297	.vsel_mask = S2MPS11_BUCK_VSEL_MASK, \
cb74685e SK	298	.enable_reg = S2MPS11_REG_B5CTRL1, \
	299	.enable_mask = S2MPS11_ENABLE_MASK \
	300	}
	301
	302	#define regulator_desc_buck6_8(num) { \
	303	.name = "BUCK"#num, \
	304	.id = S2MPS11_BUCK##num, \
	305	.ops = &s2mps11_buck_ops, \
	306	.type = REGULATOR_VOLTAGE, \
	307	.owner = THIS_MODULE, \
	308	.min_uV = S2MPS11_BUCK_MIN1, \
	309	.uV_step = S2MPS11_BUCK_STEP1, \
	310	.n_voltages = S2MPS11_BUCK_N_VOLTAGES, \
90068348	311	.ramp_delay = S2MPS11_RAMP_DELAY, \
cb74685e	312	.vsel_reg = S2MPS11_REG_B6CTRL2 + (num - 6) * 2, \
2693fcab	313	.vsel_mask = S2MPS11_BUCK_VSEL_MASK, \
cb74685e SK	314	.enable_reg = S2MPS11_REG_B6CTRL1 + (num - 6) * 2, \
	315	.enable_mask = S2MPS11_ENABLE_MASK \
	316	}
	317
	318	#define regulator_desc_buck9 { \
	319	.name = "BUCK9", \
	320	.id = S2MPS11_BUCK9, \
	321	.ops = &s2mps11_buck_ops, \
	322	.type = REGULATOR_VOLTAGE, \
	323	.owner = THIS_MODULE, \
	324	.min_uV = S2MPS11_BUCK_MIN3, \
	325	.uV_step = S2MPS11_BUCK_STEP3, \
	326	.n_voltages = S2MPS11_BUCK_N_VOLTAGES, \
90068348	327	.ramp_delay = S2MPS11_RAMP_DELAY, \
cb74685e	328	.vsel_reg = S2MPS11_REG_B9CTRL2, \
2693fcab	329	.vsel_mask = S2MPS11_BUCK_VSEL_MASK, \
cb74685e SK	330	.enable_reg = S2MPS11_REG_B9CTRL1, \
	331	.enable_mask = S2MPS11_ENABLE_MASK \
	332	}
	333
	334	#define regulator_desc_buck10 { \
	335	.name = "BUCK10", \
	336	.id = S2MPS11_BUCK10, \
	337	.ops = &s2mps11_buck_ops, \
	338	.type = REGULATOR_VOLTAGE, \
	339	.owner = THIS_MODULE, \
	340	.min_uV = S2MPS11_BUCK_MIN2, \
	341	.uV_step = S2MPS11_BUCK_STEP2, \
	342	.n_voltages = S2MPS11_BUCK_N_VOLTAGES, \
90068348	343	.ramp_delay = S2MPS11_RAMP_DELAY, \
c76edd52	344	.vsel_reg = S2MPS11_REG_B10CTRL2, \
2693fcab	345	.vsel_mask = S2MPS11_BUCK_VSEL_MASK, \
c76edd52	346	.enable_reg = S2MPS11_REG_B10CTRL1, \
cb74685e SK	347	.enable_mask = S2MPS11_ENABLE_MASK \
	348	}
	349
	350	static struct regulator_desc regulators[] = {
	351	regulator_desc_ldo2(1),
	352	regulator_desc_ldo1(2),
	353	regulator_desc_ldo1(3),
	354	regulator_desc_ldo1(4),
	355	regulator_desc_ldo1(5),
	356	regulator_desc_ldo2(6),
	357	regulator_desc_ldo1(7),
	358	regulator_desc_ldo1(8),
	359	regulator_desc_ldo1(9),
	360	regulator_desc_ldo1(10),
	361	regulator_desc_ldo2(11),
	362	regulator_desc_ldo1(12),
	363	regulator_desc_ldo1(13),
	364	regulator_desc_ldo1(14),
	365	regulator_desc_ldo1(15),
	366	regulator_desc_ldo1(16),
	367	regulator_desc_ldo1(17),
	368	regulator_desc_ldo1(18),
	369	regulator_desc_ldo1(19),
	370	regulator_desc_ldo1(20),
	371	regulator_desc_ldo1(21),
	372	regulator_desc_ldo2(22),
	373	regulator_desc_ldo2(23),
	374	regulator_desc_ldo1(24),
	375	regulator_desc_ldo1(25),
	376	regulator_desc_ldo1(26),
	377	regulator_desc_ldo2(27),
	378	regulator_desc_ldo1(28),
	379	regulator_desc_ldo1(29),
	380	regulator_desc_ldo1(30),
	381	regulator_desc_ldo1(31),
	382	regulator_desc_ldo1(32),
	383	regulator_desc_ldo1(33),
	384	regulator_desc_ldo1(34),
	385	regulator_desc_ldo1(35),
	386	regulator_desc_ldo1(36),
	387	regulator_desc_ldo1(37),
	388	regulator_desc_ldo1(38),
	389	regulator_desc_buck1_4(1),
	390	regulator_desc_buck1_4(2),
	391	regulator_desc_buck1_4(3),
	392	regulator_desc_buck1_4(4),
	393	regulator_desc_buck5,
	394	regulator_desc_buck6_8(6),
	395	regulator_desc_buck6_8(7),
	396	regulator_desc_buck6_8(8),
	397	regulator_desc_buck9,
	398	regulator_desc_buck10,
	399	};
	400
a5023574	401	static int s2mps11_pmic_probe(struct platform_device *pdev)
cb74685e SK	402	{
	403	struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent);
	404	struct sec_platform_data *pdata = dev_get_platdata(iodev->dev);
a50c6b32 YSB	405	struct of_regulator_match rdata[S2MPS11_REGULATOR_MAX];
a50c6b32 YSB	406	struct device_node *reg_np = NULL;
cb74685e	407	struct regulator_config config = { };
cb74685e	408	struct s2mps11_info *s2mps11;
ad46ed14	409	int i, ret;
cb74685e	410
cb74685e SK	411	s2mps11 = devm_kzalloc(&pdev->dev, sizeof(struct s2mps11_info),
	412	GFP_KERNEL);
	413	if (!s2mps11)
	414	return -ENOMEM;
	415
6c683c92 YSB	416	if (!iodev->dev->of_node) {
	417	if (pdata) {
	418	goto common_reg;
	419	} else {
	420	dev_err(pdev->dev.parent,
	421	"Platform data or DT node not supplied\n");
	422	return -ENODEV;
	423	}
	424	}
a50c6b32 YSB	425
	426	for (i = 0; i < S2MPS11_REGULATOR_CNT; i++)
	427	rdata[i].name = regulators[i].name;
	428
	429	reg_np = of_find_node_by_name(iodev->dev->of_node, "regulators");
	430	if (!reg_np) {
	431	dev_err(&pdev->dev, "could not find regulators sub-node\n");
	432	return -EINVAL;
	433	}
	434
	435	of_regulator_match(&pdev->dev, reg_np, rdata, S2MPS11_REGULATOR_MAX);
	436
a50c6b32 YSB	437	common_reg:
a50c6b32 YSB	438	platform_set_drvdata(pdev, s2mps11);
cb74685e	439
a50c6b32 YSB	440	config.dev = &pdev->dev;
	441	config.regmap = iodev->regmap;
	442	config.driver_data = s2mps11;
	443	for (i = 0; i < S2MPS11_REGULATOR_MAX; i++) {
	444	if (!reg_np) {
	445	config.init_data = pdata->regulators[i].initdata;
	446	} else {
	447	config.init_data = rdata[i].init_data;
	448	config.of_node = rdata[i].of_node;
	449	}
cb74685e	450
d55cd794 SK	451	s2mps11->rdev[i] = devm_regulator_register(&pdev->dev,
d55cd794 SK	452	&regulators[i], &config);
ad46ed14 AL	453	if (IS_ERR(s2mps11->rdev[i])) {
ad46ed14 AL	454	ret = PTR_ERR(s2mps11->rdev[i]);
232b2504 AL	455	dev_err(&pdev->dev, "regulator init failed for %d\n",
232b2504 AL	456	i);
b707a274	457	return ret;
cb74685e SK	458	}
	459	}
	460
cb74685e SK	461	return 0;
	462	}
	463
	464	static const struct platform_device_id s2mps11_pmic_id[] = {
	465	{ "s2mps11-pmic", 0},
	466	{ },
	467	};
	468	MODULE_DEVICE_TABLE(platform, s2mps11_pmic_id);
	469
	470	static struct platform_driver s2mps11_pmic_driver = {
	471	.driver = {
	472	.name = "s2mps11-pmic",
	473	.owner = THIS_MODULE,
	474	},
	475	.probe = s2mps11_pmic_probe,
cb74685e SK	476	.id_table = s2mps11_pmic_id,
	477	};
	478
	479	static int __init s2mps11_pmic_init(void)
	480	{
	481	return platform_driver_register(&s2mps11_pmic_driver);
	482	}
	483	subsys_initcall(s2mps11_pmic_init);
	484
	485	static void __exit s2mps11_pmic_exit(void)
	486	{
	487	platform_driver_unregister(&s2mps11_pmic_driver);
	488	}
	489	module_exit(s2mps11_pmic_exit);
	490
	491	/* Module information */
	492	MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
	493	MODULE_DESCRIPTION("SAMSUNG S2MPS11 Regulator Driver");
	494	MODULE_LICENSE("GPL");