[linux-2.6-block.git] / drivers / regulator / tps65218-regulator.c

/*
 * tps65218-regulator.c
 *
 * Regulator driver for TPS65218 PMIC
 *
 * Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com/
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
 * kind, whether expressed or implied; without even the implied warranty
 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License version 2 for more details.
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/init.h>
#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/of_device.h>
#include <linux/regmap.h>
#include <linux/regulator/of_regulator.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/mfd/tps65218.h>

#define TPS65218_REGULATOR(_name, _of, _id, _type, _ops, _n, _vr, _vm, _er, \
			   _em, _cr, _cm, _lr, _nlr, _delay, _fuv, _sr, _sm) \
	{							\
		.name			= _name,		\
		.of_match		= _of,			\
		.id			= _id,			\
		.ops			= &_ops,		\
		.n_voltages		= _n,			\
		.type			= _type,	\
		.owner			= THIS_MODULE,		\
		.vsel_reg		= _vr,			\
		.vsel_mask		= _vm,			\
		.csel_reg		= _cr,			\
		.csel_mask		= _cm,			\
		.enable_reg		= _er,			\
		.enable_mask		= _em,			\
		.volt_table		= NULL,			\
		.linear_ranges		= _lr,			\
		.n_linear_ranges	= _nlr,			\
		.ramp_delay		= _delay,		\
		.fixed_uV		= _fuv,			\
		.bypass_reg	= _sr,				\
		.bypass_mask	= _sm,				\
	}							\

static const struct regulator_linear_range dcdc1_dcdc2_ranges[] = {
	REGULATOR_LINEAR_RANGE(850000, 0x0, 0x32, 10000),
	REGULATOR_LINEAR_RANGE(1375000, 0x33, 0x3f, 25000),
};

static const struct regulator_linear_range ldo1_dcdc3_ranges[] = {
	REGULATOR_LINEAR_RANGE(900000, 0x0, 0x1a, 25000),
	REGULATOR_LINEAR_RANGE(1600000, 0x1b, 0x3f, 50000),
};

static const struct regulator_linear_range dcdc4_ranges[] = {
	REGULATOR_LINEAR_RANGE(1175000, 0x0, 0xf, 25000),
	REGULATOR_LINEAR_RANGE(1600000, 0x10, 0x34, 50000),
};

static int tps65218_pmic_set_voltage_sel(struct regulator_dev *dev,
					 unsigned selector)
{
	int ret;
	struct tps65218 *tps = rdev_get_drvdata(dev);
	unsigned int rid = rdev_get_id(dev);

	/* Set the voltage based on vsel value and write protect level is 2 */
	ret = tps65218_set_bits(tps, dev->desc->vsel_reg, dev->desc->vsel_mask,
				selector, TPS65218_PROTECT_L1);

	/* Set GO bit for DCDC1/2 to initiate voltage transistion */
	switch (rid) {
	case TPS65218_DCDC_1:
	case TPS65218_DCDC_2:
		ret = tps65218_set_bits(tps, TPS65218_REG_CONTRL_SLEW_RATE,
					TPS65218_SLEW_RATE_GO,
					TPS65218_SLEW_RATE_GO,
					TPS65218_PROTECT_L1);
		break;
	}

	return ret;
}

static int tps65218_pmic_enable(struct regulator_dev *dev)
{
	struct tps65218 *tps = rdev_get_drvdata(dev);
	int rid = rdev_get_id(dev);

	if (rid < TPS65218_DCDC_1 || rid > TPS65218_LDO_1)
		return -EINVAL;

	/* Enable the regulator and password protection is level 1 */
	return tps65218_set_bits(tps, dev->desc->enable_reg,
				 dev->desc->enable_mask, dev->desc->enable_mask,
				 TPS65218_PROTECT_L1);
}

static int tps65218_pmic_disable(struct regulator_dev *dev)
{
	struct tps65218 *tps = rdev_get_drvdata(dev);
	int rid = rdev_get_id(dev);

	if (rid < TPS65218_DCDC_1 || rid > TPS65218_LDO_1)
		return -EINVAL;

	/* Disable the regulator and password protection is level 1 */
	return tps65218_clear_bits(tps, dev->desc->enable_reg,
				   dev->desc->enable_mask, TPS65218_PROTECT_L1);
}

static int tps65218_pmic_set_suspend_enable(struct regulator_dev *dev)
{
	struct tps65218 *tps = rdev_get_drvdata(dev);
	unsigned int rid = rdev_get_id(dev);

	if (rid < TPS65218_DCDC_1 || rid > TPS65218_LDO_1)
		return -EINVAL;

	return tps65218_clear_bits(tps, dev->desc->bypass_reg,
				   dev->desc->bypass_mask,
				   TPS65218_PROTECT_L1);
}

static int tps65218_pmic_set_suspend_disable(struct regulator_dev *dev)
{
	struct tps65218 *tps = rdev_get_drvdata(dev);
	unsigned int rid = rdev_get_id(dev);

	if (rid < TPS65218_DCDC_1 || rid > TPS65218_LDO_1)
		return -EINVAL;

	/*
	 * Certain revisions of TPS65218 will need to have DCDC3 regulator
	 * enabled always, otherwise an immediate system reboot will occur
	 * during poweroff.
	 */
	if (rid == TPS65218_DCDC_3 && tps->rev == TPS65218_REV_2_1)
		return 0;

	if (!tps->strobes[rid]) {
		if (rid == TPS65218_DCDC_3)
			tps->strobes[rid] = 3;
		else
			return -EINVAL;
	}

	return tps65218_set_bits(tps, dev->desc->bypass_reg,
				 dev->desc->bypass_mask,
				 tps->strobes[rid], TPS65218_PROTECT_L1);
}

/* Operations permitted on DCDC1, DCDC2 */
static struct regulator_ops tps65218_dcdc12_ops = {
	.is_enabled		= regulator_is_enabled_regmap,
	.enable			= tps65218_pmic_enable,
	.disable		= tps65218_pmic_disable,
	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
	.set_voltage_sel	= tps65218_pmic_set_voltage_sel,
	.list_voltage		= regulator_list_voltage_linear_range,
	.map_voltage		= regulator_map_voltage_linear_range,
	.set_voltage_time_sel	= regulator_set_voltage_time_sel,
	.set_suspend_enable	= tps65218_pmic_set_suspend_enable,
	.set_suspend_disable	= tps65218_pmic_set_suspend_disable,
};

/* Operations permitted on DCDC3, DCDC4 and LDO1 */
static struct regulator_ops tps65218_ldo1_dcdc34_ops = {
	.is_enabled		= regulator_is_enabled_regmap,
	.enable			= tps65218_pmic_enable,
	.disable		= tps65218_pmic_disable,
	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
	.set_voltage_sel	= tps65218_pmic_set_voltage_sel,
	.list_voltage		= regulator_list_voltage_linear_range,
	.map_voltage		= regulator_map_voltage_linear_range,
	.set_suspend_enable	= tps65218_pmic_set_suspend_enable,
	.set_suspend_disable	= tps65218_pmic_set_suspend_disable,
};

static const int ls3_currents[] = { 100, 200, 500, 1000 };

static int tps65218_pmic_set_input_current_lim(struct regulator_dev *dev,
					       int lim_uA)
{
	unsigned int index = 0;
	unsigned int num_currents = ARRAY_SIZE(ls3_currents);
	struct tps65218 *tps = rdev_get_drvdata(dev);

	while (index < num_currents && ls3_currents[index] != lim_uA)
		index++;

	if (index == num_currents)
		return -EINVAL;

	return tps65218_set_bits(tps, dev->desc->csel_reg, dev->desc->csel_mask,
				 index << 2, TPS65218_PROTECT_L1);
}

static int tps65218_pmic_set_current_limit(struct regulator_dev *dev,
					   int min_uA, int max_uA)
{
	int index = 0;
	unsigned int num_currents = ARRAY_SIZE(ls3_currents);
	struct tps65218 *tps = rdev_get_drvdata(dev);

	while (index < num_currents && ls3_currents[index] < max_uA)
		index++;

	index--;

	if (index < 0 || ls3_currents[index] < min_uA)
		return -EINVAL;

	return tps65218_set_bits(tps, dev->desc->csel_reg, dev->desc->csel_mask,
				 index << 2, TPS65218_PROTECT_L1);
}

static int tps65218_pmic_get_current_limit(struct regulator_dev *dev)
{
	int retval;
	unsigned int index;
	struct tps65218 *tps = rdev_get_drvdata(dev);

	retval = regmap_read(tps->regmap, dev->desc->csel_reg, &index);
	if (retval < 0)
		return retval;

	index = (index & dev->desc->csel_mask) >> 2;

	return ls3_currents[index];
}

static struct regulator_ops tps65218_ls3_ops = {
	.is_enabled		= regulator_is_enabled_regmap,
	.enable			= tps65218_pmic_enable,
	.disable		= tps65218_pmic_disable,
	.set_input_current_limit = tps65218_pmic_set_input_current_lim,
	.set_current_limit	= tps65218_pmic_set_current_limit,
	.get_current_limit	= tps65218_pmic_get_current_limit,
};

/* Operations permitted on DCDC5, DCDC6 */
static struct regulator_ops tps65218_dcdc56_pmic_ops = {
	.is_enabled		= regulator_is_enabled_regmap,
	.enable			= tps65218_pmic_enable,
	.disable		= tps65218_pmic_disable,
	.set_suspend_enable	= tps65218_pmic_set_suspend_enable,
	.set_suspend_disable	= tps65218_pmic_set_suspend_disable,
};

static const struct regulator_desc regulators[] = {
	TPS65218_REGULATOR("DCDC1", "regulator-dcdc1", TPS65218_DCDC_1,
			   REGULATOR_VOLTAGE, tps65218_dcdc12_ops, 64,
			   TPS65218_REG_CONTROL_DCDC1,
			   TPS65218_CONTROL_DCDC1_MASK, TPS65218_REG_ENABLE1,
			   TPS65218_ENABLE1_DC1_EN, 0, 0, dcdc1_dcdc2_ranges,
			   2, 4000, 0, TPS65218_REG_SEQ3,
			   TPS65218_SEQ3_DC1_SEQ_MASK),
	TPS65218_REGULATOR("DCDC2", "regulator-dcdc2", TPS65218_DCDC_2,
			   REGULATOR_VOLTAGE, tps65218_dcdc12_ops, 64,
			   TPS65218_REG_CONTROL_DCDC2,
			   TPS65218_CONTROL_DCDC2_MASK, TPS65218_REG_ENABLE1,
			   TPS65218_ENABLE1_DC2_EN, 0, 0, dcdc1_dcdc2_ranges,
			   2, 4000, 0, TPS65218_REG_SEQ3,
			   TPS65218_SEQ3_DC2_SEQ_MASK),
	TPS65218_REGULATOR("DCDC3", "regulator-dcdc3", TPS65218_DCDC_3,
			   REGULATOR_VOLTAGE, tps65218_ldo1_dcdc34_ops, 64,
			   TPS65218_REG_CONTROL_DCDC3,
			   TPS65218_CONTROL_DCDC3_MASK, TPS65218_REG_ENABLE1,
			   TPS65218_ENABLE1_DC3_EN, 0, 0, ldo1_dcdc3_ranges, 2,
			   0, 0, TPS65218_REG_SEQ4, TPS65218_SEQ4_DC3_SEQ_MASK),
	TPS65218_REGULATOR("DCDC4", "regulator-dcdc4", TPS65218_DCDC_4,
			   REGULATOR_VOLTAGE, tps65218_ldo1_dcdc34_ops, 53,
			   TPS65218_REG_CONTROL_DCDC4,
			   TPS65218_CONTROL_DCDC4_MASK, TPS65218_REG_ENABLE1,
			   TPS65218_ENABLE1_DC4_EN, 0, 0, dcdc4_ranges, 2,
			   0, 0, TPS65218_REG_SEQ4, TPS65218_SEQ4_DC4_SEQ_MASK),
	TPS65218_REGULATOR("DCDC5", "regulator-dcdc5", TPS65218_DCDC_5,
			   REGULATOR_VOLTAGE, tps65218_dcdc56_pmic_ops, 1, -1,
			   -1, TPS65218_REG_ENABLE1, TPS65218_ENABLE1_DC5_EN, 0,
			   0, NULL, 0, 0, 1000000, TPS65218_REG_SEQ5,
			   TPS65218_SEQ5_DC5_SEQ_MASK),
	TPS65218_REGULATOR("DCDC6", "regulator-dcdc6", TPS65218_DCDC_6,
			   REGULATOR_VOLTAGE, tps65218_dcdc56_pmic_ops, 1, -1,
			   -1, TPS65218_REG_ENABLE1, TPS65218_ENABLE1_DC6_EN, 0,
			   0, NULL, 0, 0, 1800000, TPS65218_REG_SEQ5,
			   TPS65218_SEQ5_DC6_SEQ_MASK),
	TPS65218_REGULATOR("LDO1", "regulator-ldo1", TPS65218_LDO_1,
			   REGULATOR_VOLTAGE, tps65218_ldo1_dcdc34_ops, 64,
			   TPS65218_REG_CONTROL_LDO1,
			   TPS65218_CONTROL_LDO1_MASK, TPS65218_REG_ENABLE2,
			   TPS65218_ENABLE2_LDO1_EN, 0, 0, ldo1_dcdc3_ranges,
			   2, 0, 0, TPS65218_REG_SEQ6,
			   TPS65218_SEQ6_LDO1_SEQ_MASK),
	TPS65218_REGULATOR("LS3", "regulator-ls3", TPS65218_LS_3,
			   REGULATOR_CURRENT, tps65218_ls3_ops, 0, 0, 0,
			   TPS65218_REG_ENABLE2, TPS65218_ENABLE2_LS3_EN,
			   TPS65218_REG_CONFIG2, TPS65218_CONFIG2_LS3ILIM_MASK,
			   NULL, 0, 0, 0, 0, 0),
};

static int tps65218_regulator_probe(struct platform_device *pdev)
{
	struct tps65218 *tps = dev_get_drvdata(pdev->dev.parent);
	struct regulator_dev *rdev;
	struct regulator_config config = { };
	int i, ret;
	unsigned int val;

	config.dev = &pdev->dev;
	config.dev->of_node = tps->dev->of_node;
	config.driver_data = tps;
	config.regmap = tps->regmap;

	/* Allocate memory for strobes */
	tps->strobes = devm_kcalloc(&pdev->dev,
				    TPS65218_NUM_REGULATOR, sizeof(u8),
				    GFP_KERNEL);
	if (!tps->strobes)
		return -ENOMEM;

	for (i = 0; i < ARRAY_SIZE(regulators); i++) {
		rdev = devm_regulator_register(&pdev->dev, &regulators[i],
					       &config);
		if (IS_ERR(rdev)) {
			dev_err(tps->dev, "failed to register %s regulator\n",
				pdev->name);
			return PTR_ERR(rdev);
		}

		ret = regmap_read(tps->regmap, regulators[i].bypass_reg, &val);
		if (ret)
			return ret;

		tps->strobes[i] = val & regulators[i].bypass_mask;
	}

	return 0;
}

static const struct platform_device_id tps65218_regulator_id_table[] = {
	{ "tps65218-regulator", },
	{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(platform, tps65218_regulator_id_table);

static struct platform_driver tps65218_regulator_driver = {
	.driver = {
		.name = "tps65218-pmic",
	},
	.probe = tps65218_regulator_probe,
	.id_table = tps65218_regulator_id_table,
};

module_platform_driver(tps65218_regulator_driver);

MODULE_AUTHOR("J Keerthy <j-keerthy@ti.com>");
MODULE_DESCRIPTION("TPS65218 voltage regulator driver");
MODULE_ALIAS("platform:tps65218-pmic");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
90e7d526 K	1	/*
	2	* tps65218-regulator.c
	3	*
	4	* Regulator driver for TPS65218 PMIC
	5	*
	6	* Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com/
	7	*
	8	* This program is free software; you can redistribute it and/or
	9	* modify it under the terms of the GNU General Public License version 2 as
	10	* published by the Free Software Foundation.
	11	*
	12	* This program is distributed "as is" WITHOUT ANY WARRANTY of any
	13	* kind, whether expressed or implied; without even the implied warranty
	14	* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	* GNU General Public License version 2 for more details.
	16	*/
	17
	18	#include <linux/kernel.h>
	19	#include <linux/module.h>
	20	#include <linux/device.h>
	21	#include <linux/init.h>
	22	#include <linux/err.h>
	23	#include <linux/platform_device.h>
	24	#include <linux/of_device.h>
0aced355	25	#include <linux/regmap.h>
90e7d526 K	26	#include <linux/regulator/of_regulator.h>
	27	#include <linux/regulator/driver.h>
	28	#include <linux/regulator/machine.h>
	29	#include <linux/mfd/tps65218.h>
	30
2dc49403 K	31	#define TPS65218_REGULATOR(_name, _of, _id, _type, _ops, _n, _vr, _vm, _er, \
2dc49403 K	32	_em, _cr, _cm, _lr, _nlr, _delay, _fuv, _sr, _sm) \
90e7d526 K	33	{ \
90e7d526 K	34	.name = _name, \
2dc49403	35	.of_match = _of, \
90e7d526 K	36	.id = _id, \
	37	.ops = &_ops, \
	38	.n_voltages = _n, \
c0ea88b8	39	.type = _type, \
90e7d526 K	40	.owner = THIS_MODULE, \
	41	.vsel_reg = _vr, \
	42	.vsel_mask = _vm, \
c0ea88b8 NK	43	.csel_reg = _cr, \
c0ea88b8 NK	44	.csel_mask = _cm, \
90e7d526 K	45	.enable_reg = _er, \
90e7d526 K	46	.enable_mask = _em, \
dd648ef2	47	.volt_table = NULL, \
90e7d526 K	48	.linear_ranges = _lr, \
90e7d526 K	49	.n_linear_ranges = _nlr, \
5ab9be42	50	.ramp_delay = _delay, \
b9a0d359 TK	51	.fixed_uV = _fuv, \
	52	.bypass_reg = _sr, \
	53	.bypass_mask = _sm, \
90e7d526 K	54	} \
90e7d526 K	55
90e7d526 K	56	static const struct regulator_linear_range dcdc1_dcdc2_ranges[] = {
	57	REGULATOR_LINEAR_RANGE(850000, 0x0, 0x32, 10000),
	58	REGULATOR_LINEAR_RANGE(1375000, 0x33, 0x3f, 25000),
	59	};
	60
	61	static const struct regulator_linear_range ldo1_dcdc3_ranges[] = {
	62	REGULATOR_LINEAR_RANGE(900000, 0x0, 0x1a, 25000),
	63	REGULATOR_LINEAR_RANGE(1600000, 0x1b, 0x3f, 50000),
	64	};
	65
	66	static const struct regulator_linear_range dcdc4_ranges[] = {
	67	REGULATOR_LINEAR_RANGE(1175000, 0x0, 0xf, 25000),
42ab0f39	68	REGULATOR_LINEAR_RANGE(1600000, 0x10, 0x34, 50000),
90e7d526 K	69	};
90e7d526 K	70
90e7d526 K	71	static int tps65218_pmic_set_voltage_sel(struct regulator_dev *dev,
	72	unsigned selector)
	73	{
	74	int ret;
	75	struct tps65218 *tps = rdev_get_drvdata(dev);
	76	unsigned int rid = rdev_get_id(dev);
	77
	78	/* Set the voltage based on vsel value and write protect level is 2 */
	79	ret = tps65218_set_bits(tps, dev->desc->vsel_reg, dev->desc->vsel_mask,
	80	selector, TPS65218_PROTECT_L1);
	81
	82	/* Set GO bit for DCDC1/2 to initiate voltage transistion */
	83	switch (rid) {
	84	case TPS65218_DCDC_1:
	85	case TPS65218_DCDC_2:
	86	ret = tps65218_set_bits(tps, TPS65218_REG_CONTRL_SLEW_RATE,
	87	TPS65218_SLEW_RATE_GO,
	88	TPS65218_SLEW_RATE_GO,
	89	TPS65218_PROTECT_L1);
	90	break;
	91	}
	92
	93	return ret;
	94	}
	95
	96	static int tps65218_pmic_enable(struct regulator_dev *dev)
	97	{
	98	struct tps65218 *tps = rdev_get_drvdata(dev);
5f986f7c	99	int rid = rdev_get_id(dev);
90e7d526 K	100
	101	if (rid < TPS65218_DCDC_1 \|\| rid > TPS65218_LDO_1)
	102	return -EINVAL;
	103
	104	/* Enable the regulator and password protection is level 1 */
	105	return tps65218_set_bits(tps, dev->desc->enable_reg,
	106	dev->desc->enable_mask, dev->desc->enable_mask,
	107	TPS65218_PROTECT_L1);
	108	}
	109
	110	static int tps65218_pmic_disable(struct regulator_dev *dev)
	111	{
	112	struct tps65218 *tps = rdev_get_drvdata(dev);
5f986f7c	113	int rid = rdev_get_id(dev);
90e7d526 K	114
	115	if (rid < TPS65218_DCDC_1 \|\| rid > TPS65218_LDO_1)
	116	return -EINVAL;
	117
	118	/* Disable the regulator and password protection is level 1 */
	119	return tps65218_clear_bits(tps, dev->desc->enable_reg,
	120	dev->desc->enable_mask, TPS65218_PROTECT_L1);
	121	}
	122
b9a0d359 TK	123	static int tps65218_pmic_set_suspend_enable(struct regulator_dev *dev)
	124	{
	125	struct tps65218 *tps = rdev_get_drvdata(dev);
	126	unsigned int rid = rdev_get_id(dev);
	127
	128	if (rid < TPS65218_DCDC_1 \|\| rid > TPS65218_LDO_1)
	129	return -EINVAL;
	130
	131	return tps65218_clear_bits(tps, dev->desc->bypass_reg,
	132	dev->desc->bypass_mask,
	133	TPS65218_PROTECT_L1);
	134	}
	135
	136	static int tps65218_pmic_set_suspend_disable(struct regulator_dev *dev)
	137	{
	138	struct tps65218 *tps = rdev_get_drvdata(dev);
	139	unsigned int rid = rdev_get_id(dev);
	140
	141	if (rid < TPS65218_DCDC_1 \|\| rid > TPS65218_LDO_1)
	142	return -EINVAL;
	143
23a34f9d TK	144	/*
	145	* Certain revisions of TPS65218 will need to have DCDC3 regulator
	146	* enabled always, otherwise an immediate system reboot will occur
	147	* during poweroff.
	148	*/
	149	if (rid == TPS65218_DCDC_3 && tps->rev == TPS65218_REV_2_1)
	150	return 0;
	151
2dc49403	152	if (!tps->strobes[rid]) {
3fb2ef11	153	if (rid == TPS65218_DCDC_3)
efeb88c6	154	tps->strobes[rid] = 3;
3fb2ef11 TK	155	else
	156	return -EINVAL;
	157	}
b9a0d359 TK	158
	159	return tps65218_set_bits(tps, dev->desc->bypass_reg,
	160	dev->desc->bypass_mask,
2dc49403	161	tps->strobes[rid], TPS65218_PROTECT_L1);
b9a0d359 TK	162	}
b9a0d359 TK	163
90e7d526 K	164	/* Operations permitted on DCDC1, DCDC2 */
	165	static struct regulator_ops tps65218_dcdc12_ops = {
	166	.is_enabled = regulator_is_enabled_regmap,
	167	.enable = tps65218_pmic_enable,
	168	.disable = tps65218_pmic_disable,
	169	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	170	.set_voltage_sel = tps65218_pmic_set_voltage_sel,
	171	.list_voltage = regulator_list_voltage_linear_range,
	172	.map_voltage = regulator_map_voltage_linear_range,
5ab9be42	173	.set_voltage_time_sel = regulator_set_voltage_time_sel,
b9a0d359 TK	174	.set_suspend_enable = tps65218_pmic_set_suspend_enable,
b9a0d359 TK	175	.set_suspend_disable = tps65218_pmic_set_suspend_disable,
90e7d526 K	176	};
	177
	178	/* Operations permitted on DCDC3, DCDC4 and LDO1 */
	179	static struct regulator_ops tps65218_ldo1_dcdc34_ops = {
	180	.is_enabled = regulator_is_enabled_regmap,
	181	.enable = tps65218_pmic_enable,
	182	.disable = tps65218_pmic_disable,
	183	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	184	.set_voltage_sel = tps65218_pmic_set_voltage_sel,
	185	.list_voltage = regulator_list_voltage_linear_range,
	186	.map_voltage = regulator_map_voltage_linear_range,
b9a0d359 TK	187	.set_suspend_enable = tps65218_pmic_set_suspend_enable,
b9a0d359 TK	188	.set_suspend_disable = tps65218_pmic_set_suspend_disable,
90e7d526 K	189	};
90e7d526 K	190
c0ea88b8 NK	191	static const int ls3_currents[] = { 100, 200, 500, 1000 };
	192
	193	static int tps65218_pmic_set_input_current_lim(struct regulator_dev *dev,
	194	int lim_uA)
	195	{
	196	unsigned int index = 0;
	197	unsigned int num_currents = ARRAY_SIZE(ls3_currents);
	198	struct tps65218 *tps = rdev_get_drvdata(dev);
	199
	200	while (index < num_currents && ls3_currents[index] != lim_uA)
	201	index++;
	202
	203	if (index == num_currents)
	204	return -EINVAL;
	205
	206	return tps65218_set_bits(tps, dev->desc->csel_reg, dev->desc->csel_mask,
	207	index << 2, TPS65218_PROTECT_L1);
	208	}
	209
	210	static int tps65218_pmic_set_current_limit(struct regulator_dev *dev,
	211	int min_uA, int max_uA)
	212	{
	213	int index = 0;
	214	unsigned int num_currents = ARRAY_SIZE(ls3_currents);
	215	struct tps65218 *tps = rdev_get_drvdata(dev);
	216
	217	while (index < num_currents && ls3_currents[index] < max_uA)
	218	index++;
	219
	220	index--;
	221
	222	if (index < 0 \|\| ls3_currents[index] < min_uA)
	223	return -EINVAL;
	224
	225	return tps65218_set_bits(tps, dev->desc->csel_reg, dev->desc->csel_mask,
	226	index << 2, TPS65218_PROTECT_L1);
	227	}
	228
	229	static int tps65218_pmic_get_current_limit(struct regulator_dev *dev)
	230	{
	231	int retval;
	232	unsigned int index;
	233	struct tps65218 *tps = rdev_get_drvdata(dev);
	234
0aced355	235	retval = regmap_read(tps->regmap, dev->desc->csel_reg, &index);
c0ea88b8 NK	236	if (retval < 0)
	237	return retval;
	238
	239	index = (index & dev->desc->csel_mask) >> 2;
	240
	241	return ls3_currents[index];
	242	}
	243
	244	static struct regulator_ops tps65218_ls3_ops = {
	245	.is_enabled = regulator_is_enabled_regmap,
	246	.enable = tps65218_pmic_enable,
	247	.disable = tps65218_pmic_disable,
	248	.set_input_current_limit = tps65218_pmic_set_input_current_lim,
	249	.set_current_limit = tps65218_pmic_set_current_limit,
	250	.get_current_limit = tps65218_pmic_get_current_limit,
	251	};
	252
90e7d526 K	253	/* Operations permitted on DCDC5, DCDC6 */
	254	static struct regulator_ops tps65218_dcdc56_pmic_ops = {
	255	.is_enabled = regulator_is_enabled_regmap,
	256	.enable = tps65218_pmic_enable,
	257	.disable = tps65218_pmic_disable,
b9a0d359 TK	258	.set_suspend_enable = tps65218_pmic_set_suspend_enable,
b9a0d359 TK	259	.set_suspend_disable = tps65218_pmic_set_suspend_disable,
90e7d526 K	260	};
	261
	262	static const struct regulator_desc regulators[] = {
2dc49403 K	263	TPS65218_REGULATOR("DCDC1", "regulator-dcdc1", TPS65218_DCDC_1,
	264	REGULATOR_VOLTAGE, tps65218_dcdc12_ops, 64,
	265	TPS65218_REG_CONTROL_DCDC1,
c0ea88b8 NK	266	TPS65218_CONTROL_DCDC1_MASK, TPS65218_REG_ENABLE1,
c0ea88b8 NK	267	TPS65218_ENABLE1_DC1_EN, 0, 0, dcdc1_dcdc2_ranges,
b9a0d359 TK	268	2, 4000, 0, TPS65218_REG_SEQ3,
b9a0d359 TK	269	TPS65218_SEQ3_DC1_SEQ_MASK),
2dc49403 K	270	TPS65218_REGULATOR("DCDC2", "regulator-dcdc2", TPS65218_DCDC_2,
	271	REGULATOR_VOLTAGE, tps65218_dcdc12_ops, 64,
	272	TPS65218_REG_CONTROL_DCDC2,
c0ea88b8 NK	273	TPS65218_CONTROL_DCDC2_MASK, TPS65218_REG_ENABLE1,
c0ea88b8 NK	274	TPS65218_ENABLE1_DC2_EN, 0, 0, dcdc1_dcdc2_ranges,
b9a0d359 TK	275	2, 4000, 0, TPS65218_REG_SEQ3,
b9a0d359 TK	276	TPS65218_SEQ3_DC2_SEQ_MASK),
2dc49403 K	277	TPS65218_REGULATOR("DCDC3", "regulator-dcdc3", TPS65218_DCDC_3,
2dc49403 K	278	REGULATOR_VOLTAGE, tps65218_ldo1_dcdc34_ops, 64,
c0ea88b8	279	TPS65218_REG_CONTROL_DCDC3,
90e7d526	280	TPS65218_CONTROL_DCDC3_MASK, TPS65218_REG_ENABLE1,
c0ea88b8	281	TPS65218_ENABLE1_DC3_EN, 0, 0, ldo1_dcdc3_ranges, 2,
b9a0d359	282	0, 0, TPS65218_REG_SEQ4, TPS65218_SEQ4_DC3_SEQ_MASK),
2dc49403 K	283	TPS65218_REGULATOR("DCDC4", "regulator-dcdc4", TPS65218_DCDC_4,
2dc49403 K	284	REGULATOR_VOLTAGE, tps65218_ldo1_dcdc34_ops, 53,
c0ea88b8 NK	285	TPS65218_REG_CONTROL_DCDC4,
	286	TPS65218_CONTROL_DCDC4_MASK, TPS65218_REG_ENABLE1,
	287	TPS65218_ENABLE1_DC4_EN, 0, 0, dcdc4_ranges, 2,
b9a0d359	288	0, 0, TPS65218_REG_SEQ4, TPS65218_SEQ4_DC4_SEQ_MASK),
2dc49403 K	289	TPS65218_REGULATOR("DCDC5", "regulator-dcdc5", TPS65218_DCDC_5,
	290	REGULATOR_VOLTAGE, tps65218_dcdc56_pmic_ops, 1, -1,
	291	-1, TPS65218_REG_ENABLE1, TPS65218_ENABLE1_DC5_EN, 0,
	292	0, NULL, 0, 0, 1000000, TPS65218_REG_SEQ5,
b9a0d359	293	TPS65218_SEQ5_DC5_SEQ_MASK),
2dc49403 K	294	TPS65218_REGULATOR("DCDC6", "regulator-dcdc6", TPS65218_DCDC_6,
	295	REGULATOR_VOLTAGE, tps65218_dcdc56_pmic_ops, 1, -1,
	296	-1, TPS65218_REG_ENABLE1, TPS65218_ENABLE1_DC6_EN, 0,
	297	0, NULL, 0, 0, 1800000, TPS65218_REG_SEQ5,
b9a0d359	298	TPS65218_SEQ5_DC6_SEQ_MASK),
2dc49403 K	299	TPS65218_REGULATOR("LDO1", "regulator-ldo1", TPS65218_LDO_1,
2dc49403 K	300	REGULATOR_VOLTAGE, tps65218_ldo1_dcdc34_ops, 64,
0eada6a1	301	TPS65218_REG_CONTROL_LDO1,
90e7d526	302	TPS65218_CONTROL_LDO1_MASK, TPS65218_REG_ENABLE2,
c0ea88b8	303	TPS65218_ENABLE2_LDO1_EN, 0, 0, ldo1_dcdc3_ranges,
b9a0d359 TK	304	2, 0, 0, TPS65218_REG_SEQ6,
b9a0d359 TK	305	TPS65218_SEQ6_LDO1_SEQ_MASK),
2dc49403 K	306	TPS65218_REGULATOR("LS3", "regulator-ls3", TPS65218_LS_3,
	307	REGULATOR_CURRENT, tps65218_ls3_ops, 0, 0, 0,
	308	TPS65218_REG_ENABLE2, TPS65218_ENABLE2_LS3_EN,
	309	TPS65218_REG_CONFIG2, TPS65218_CONFIG2_LS3ILIM_MASK,
	310	NULL, 0, 0, 0, 0, 0),
90e7d526 K	311	};
	312
	313	static int tps65218_regulator_probe(struct platform_device *pdev)
	314	{
	315	struct tps65218 *tps = dev_get_drvdata(pdev->dev.parent);
90e7d526	316	struct regulator_dev *rdev;
90e7d526	317	struct regulator_config config = { };
2dc49403	318	int i, ret;
b9a0d359	319	unsigned int val;
90e7d526	320
90e7d526	321	config.dev = &pdev->dev;
2dc49403	322	config.dev->of_node = tps->dev->of_node;
90e7d526 K	323	config.driver_data = tps;
	324	config.regmap = tps->regmap;
	325
2dc49403	326	/* Allocate memory for strobes */
a86854d0 KC	327	tps->strobes = devm_kcalloc(&pdev->dev,
	328	TPS65218_NUM_REGULATOR, sizeof(u8),
	329	GFP_KERNEL);
5597bfb4 AL	330	if (!tps->strobes)
5597bfb4 AL	331	return -ENOMEM;
90e7d526	332
2dc49403 K	333	for (i = 0; i < ARRAY_SIZE(regulators); i++) {
	334	rdev = devm_regulator_register(&pdev->dev, &regulators[i],
	335	&config);
	336	if (IS_ERR(rdev)) {
	337	dev_err(tps->dev, "failed to register %s regulator\n",
	338	pdev->name);
	339	return PTR_ERR(rdev);
	340	}
b9a0d359	341
2dc49403 K	342	ret = regmap_read(tps->regmap, regulators[i].bypass_reg, &val);
	343	if (ret)
	344	return ret;
	345
	346	tps->strobes[i] = val & regulators[i].bypass_mask;
	347	}
b9a0d359	348
90e7d526 K	349	return 0;
	350	}
	351
2dc49403 K	352	static const struct platform_device_id tps65218_regulator_id_table[] = {
	353	{ "tps65218-regulator", },
	354	{ /* sentinel */ }
	355	};
	356	MODULE_DEVICE_TABLE(platform, tps65218_regulator_id_table);
	357
90e7d526 K	358	static struct platform_driver tps65218_regulator_driver = {
	359	.driver = {
	360	.name = "tps65218-pmic",
90e7d526 K	361	},
90e7d526 K	362	.probe = tps65218_regulator_probe,
2dc49403	363	.id_table = tps65218_regulator_id_table,
90e7d526 K	364	};
	365
	366	module_platform_driver(tps65218_regulator_driver);
	367
	368	MODULE_AUTHOR("J Keerthy <j-keerthy@ti.com>");
	369	MODULE_DESCRIPTION("TPS65218 voltage regulator driver");
	370	MODULE_ALIAS("platform:tps65218-pmic");
	371	MODULE_LICENSE("GPL v2");