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

// SPDX-License-Identifier: GPL-2.0-only
/*
 * tps65218-regulator.c
 *
 * Regulator driver for TPS65218 PMIC
 *
 * Copyright (C) 2014 Texas Instruments Incorporated - https://www.ti.com/
 */

#include <linux/kernel.h>
#include <linux/mod_devicetable.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/init.h>
#include <linux/err.h>
#include <linux/platform_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, \
			   _ct, _ncl) \
	{							\
		.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,			\
		.curr_table		= _ct,			\
		.n_current_limits	= _ncl,			\
		.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 linear_range dcdc1_dcdc2_ranges[] = {
	REGULATOR_LINEAR_RANGE(850000, 0x0, 0x32, 10000),
	REGULATOR_LINEAR_RANGE(1375000, 0x33, 0x3f, 25000),
};

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

static const struct 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_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_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 const 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 const 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 unsigned int ls3_currents[] = { 100000, 200000, 500000, 1000000 };

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 << __builtin_ctz(dev->desc->csel_mask),
				 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 << __builtin_ctz(dev->desc->csel_mask),
				 TPS65218_PROTECT_L1);
}

static const struct regulator_ops tps65218_ls23_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	= regulator_get_current_limit_regmap,
};

/* Operations permitted on DCDC5, DCDC6 */
static const 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, NULL, 0),
	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, NULL, 0),
	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,
			   NULL, 0),
	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,
			   NULL, 0),
	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, NULL, 0),
	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, NULL, 0),
	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, NULL, 0),
	TPS65218_REGULATOR("LS2", "regulator-ls2", TPS65218_LS_2,
			   REGULATOR_CURRENT, tps65218_ls23_ops, 0, 0, 0,
			   TPS65218_REG_ENABLE2, TPS65218_ENABLE2_LS2_EN,
			   TPS65218_REG_CONFIG2, TPS65218_CONFIG2_LS2ILIM_MASK,
			   NULL, 0, 0, 0, 0, 0, ls3_currents,
			   ARRAY_SIZE(ls3_currents)),
	TPS65218_REGULATOR("LS3", "regulator-ls3", TPS65218_LS_3,
			   REGULATOR_CURRENT, tps65218_ls23_ops, 0, 0, 0,
			   TPS65218_REG_ENABLE2, TPS65218_ENABLE2_LS3_EN,
			   TPS65218_REG_CONFIG2, TPS65218_CONFIG2_LS3ILIM_MASK,
			   NULL, 0, 0, 0, 0, 0, ls3_currents,
			   ARRAY_SIZE(ls3_currents)),
};

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_type = PROBE_PREFER_ASYNCHRONOUS,
	},
	.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
abd46274	1	// SPDX-License-Identifier: GPL-2.0-only
90e7d526 K	2	/*
	3	* tps65218-regulator.c
	4	*
	5	* Regulator driver for TPS65218 PMIC
	6	*
2ca76b3e	7	* Copyright (C) 2014 Texas Instruments Incorporated - https://www.ti.com/
90e7d526 K	8	*/
	9
	10	#include <linux/kernel.h>
045a44d4	11	#include <linux/mod_devicetable.h>
90e7d526 K	12	#include <linux/module.h>
	13	#include <linux/device.h>
	14	#include <linux/init.h>
	15	#include <linux/err.h>
	16	#include <linux/platform_device.h>
0aced355	17	#include <linux/regmap.h>
90e7d526 K	18	#include <linux/regulator/of_regulator.h>
	19	#include <linux/regulator/driver.h>
	20	#include <linux/regulator/machine.h>
	21	#include <linux/mfd/tps65218.h>
	22
2dc49403	23	#define TPS65218_REGULATOR(_name, _of, _id, _type, _ops, _n, _vr, _vm, _er, \
7cfcecfb AL	24	_em, _cr, _cm, _lr, _nlr, _delay, _fuv, _sr, _sm, \
7cfcecfb AL	25	_ct, _ncl) \
90e7d526 K	26	{ \
90e7d526 K	27	.name = _name, \
2dc49403	28	.of_match = _of, \
90e7d526 K	29	.id = _id, \
	30	.ops = &_ops, \
	31	.n_voltages = _n, \
c0ea88b8	32	.type = _type, \
90e7d526 K	33	.owner = THIS_MODULE, \
	34	.vsel_reg = _vr, \
	35	.vsel_mask = _vm, \
c0ea88b8 NK	36	.csel_reg = _cr, \
c0ea88b8 NK	37	.csel_mask = _cm, \
7cfcecfb AL	38	.curr_table = _ct, \
7cfcecfb AL	39	.n_current_limits = _ncl, \
90e7d526 K	40	.enable_reg = _er, \
90e7d526 K	41	.enable_mask = _em, \
dd648ef2	42	.volt_table = NULL, \
90e7d526 K	43	.linear_ranges = _lr, \
90e7d526 K	44	.n_linear_ranges = _nlr, \
5ab9be42	45	.ramp_delay = _delay, \
b9a0d359 TK	46	.fixed_uV = _fuv, \
	47	.bypass_reg = _sr, \
	48	.bypass_mask = _sm, \
90e7d526 K	49	} \
90e7d526 K	50
60ab7f41	51	static const struct linear_range dcdc1_dcdc2_ranges[] = {
90e7d526 K	52	REGULATOR_LINEAR_RANGE(850000, 0x0, 0x32, 10000),
	53	REGULATOR_LINEAR_RANGE(1375000, 0x33, 0x3f, 25000),
	54	};
	55
60ab7f41	56	static const struct linear_range ldo1_dcdc3_ranges[] = {
90e7d526 K	57	REGULATOR_LINEAR_RANGE(900000, 0x0, 0x1a, 25000),
	58	REGULATOR_LINEAR_RANGE(1600000, 0x1b, 0x3f, 50000),
	59	};
	60
60ab7f41	61	static const struct linear_range dcdc4_ranges[] = {
90e7d526	62	REGULATOR_LINEAR_RANGE(1175000, 0x0, 0xf, 25000),
42ab0f39	63	REGULATOR_LINEAR_RANGE(1600000, 0x10, 0x34, 50000),
90e7d526 K	64	};
90e7d526 K	65
90e7d526 K	66	static int tps65218_pmic_set_voltage_sel(struct regulator_dev *dev,
	67	unsigned selector)
	68	{
	69	int ret;
	70	struct tps65218 *tps = rdev_get_drvdata(dev);
	71	unsigned int rid = rdev_get_id(dev);
	72
	73	/* Set the voltage based on vsel value and write protect level is 2 */
	74	ret = tps65218_set_bits(tps, dev->desc->vsel_reg, dev->desc->vsel_mask,
	75	selector, TPS65218_PROTECT_L1);
	76
	77	/* Set GO bit for DCDC1/2 to initiate voltage transistion */
	78	switch (rid) {
	79	case TPS65218_DCDC_1:
	80	case TPS65218_DCDC_2:
	81	ret = tps65218_set_bits(tps, TPS65218_REG_CONTRL_SLEW_RATE,
	82	TPS65218_SLEW_RATE_GO,
	83	TPS65218_SLEW_RATE_GO,
	84	TPS65218_PROTECT_L1);
	85	break;
	86	}
	87
	88	return ret;
	89	}
	90
	91	static int tps65218_pmic_enable(struct regulator_dev *dev)
	92	{
	93	struct tps65218 *tps = rdev_get_drvdata(dev);
5f986f7c	94	int rid = rdev_get_id(dev);
90e7d526 K	95
	96	if (rid < TPS65218_DCDC_1 \|\| rid > TPS65218_LDO_1)
	97	return -EINVAL;
	98
	99	/* Enable the regulator and password protection is level 1 */
	100	return tps65218_set_bits(tps, dev->desc->enable_reg,
	101	dev->desc->enable_mask, dev->desc->enable_mask,
	102	TPS65218_PROTECT_L1);
	103	}
	104
	105	static int tps65218_pmic_disable(struct regulator_dev *dev)
	106	{
	107	struct tps65218 *tps = rdev_get_drvdata(dev);
5f986f7c	108	int rid = rdev_get_id(dev);
90e7d526 K	109
	110	if (rid < TPS65218_DCDC_1 \|\| rid > TPS65218_LDO_1)
	111	return -EINVAL;
	112
	113	/* Disable the regulator and password protection is level 1 */
	114	return tps65218_clear_bits(tps, dev->desc->enable_reg,
	115	dev->desc->enable_mask, TPS65218_PROTECT_L1);
	116	}
	117
b9a0d359 TK	118	static int tps65218_pmic_set_suspend_enable(struct regulator_dev *dev)
	119	{
	120	struct tps65218 *tps = rdev_get_drvdata(dev);
	121	unsigned int rid = rdev_get_id(dev);
	122
02d88863	123	if (rid > TPS65218_LDO_1)
b9a0d359 TK	124	return -EINVAL;
	125
	126	return tps65218_clear_bits(tps, dev->desc->bypass_reg,
	127	dev->desc->bypass_mask,
	128	TPS65218_PROTECT_L1);
	129	}
	130
	131	static int tps65218_pmic_set_suspend_disable(struct regulator_dev *dev)
	132	{
	133	struct tps65218 *tps = rdev_get_drvdata(dev);
	134	unsigned int rid = rdev_get_id(dev);
	135
02d88863	136	if (rid > TPS65218_LDO_1)
b9a0d359 TK	137	return -EINVAL;
b9a0d359 TK	138
23a34f9d TK	139	/*
	140	* Certain revisions of TPS65218 will need to have DCDC3 regulator
	141	* enabled always, otherwise an immediate system reboot will occur
	142	* during poweroff.
	143	*/
	144	if (rid == TPS65218_DCDC_3 && tps->rev == TPS65218_REV_2_1)
	145	return 0;
	146
2dc49403	147	if (!tps->strobes[rid]) {
3fb2ef11	148	if (rid == TPS65218_DCDC_3)
efeb88c6	149	tps->strobes[rid] = 3;
3fb2ef11 TK	150	else
	151	return -EINVAL;
	152	}
b9a0d359 TK	153
	154	return tps65218_set_bits(tps, dev->desc->bypass_reg,
	155	dev->desc->bypass_mask,
2dc49403	156	tps->strobes[rid], TPS65218_PROTECT_L1);
b9a0d359 TK	157	}
b9a0d359 TK	158
90e7d526	159	/* Operations permitted on DCDC1, DCDC2 */
d1030b43	160	static const struct regulator_ops tps65218_dcdc12_ops = {
90e7d526 K	161	.is_enabled = regulator_is_enabled_regmap,
	162	.enable = tps65218_pmic_enable,
	163	.disable = tps65218_pmic_disable,
	164	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	165	.set_voltage_sel = tps65218_pmic_set_voltage_sel,
	166	.list_voltage = regulator_list_voltage_linear_range,
	167	.map_voltage = regulator_map_voltage_linear_range,
5ab9be42	168	.set_voltage_time_sel = regulator_set_voltage_time_sel,
b9a0d359 TK	169	.set_suspend_enable = tps65218_pmic_set_suspend_enable,
b9a0d359 TK	170	.set_suspend_disable = tps65218_pmic_set_suspend_disable,
90e7d526 K	171	};
	172
	173	/* Operations permitted on DCDC3, DCDC4 and LDO1 */
d1030b43	174	static const struct regulator_ops tps65218_ldo1_dcdc34_ops = {
90e7d526 K	175	.is_enabled = regulator_is_enabled_regmap,
	176	.enable = tps65218_pmic_enable,
	177	.disable = tps65218_pmic_disable,
	178	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	179	.set_voltage_sel = tps65218_pmic_set_voltage_sel,
	180	.list_voltage = regulator_list_voltage_linear_range,
	181	.map_voltage = regulator_map_voltage_linear_range,
b9a0d359 TK	182	.set_suspend_enable = tps65218_pmic_set_suspend_enable,
b9a0d359 TK	183	.set_suspend_disable = tps65218_pmic_set_suspend_disable,
90e7d526 K	184	};
90e7d526 K	185
7cfcecfb	186	static const unsigned int ls3_currents[] = { 100000, 200000, 500000, 1000000 };
c0ea88b8 NK	187
	188	static int tps65218_pmic_set_input_current_lim(struct regulator_dev *dev,
	189	int lim_uA)
	190	{
	191	unsigned int index = 0;
	192	unsigned int num_currents = ARRAY_SIZE(ls3_currents);
	193	struct tps65218 *tps = rdev_get_drvdata(dev);
	194
	195	while (index < num_currents && ls3_currents[index] != lim_uA)
	196	index++;
	197
	198	if (index == num_currents)
	199	return -EINVAL;
	200
	201	return tps65218_set_bits(tps, dev->desc->csel_reg, dev->desc->csel_mask,
e5c8ba06 CH	202	index << __builtin_ctz(dev->desc->csel_mask),
e5c8ba06 CH	203	TPS65218_PROTECT_L1);
c0ea88b8 NK	204	}
	205
	206	static int tps65218_pmic_set_current_limit(struct regulator_dev *dev,
	207	int min_uA, int max_uA)
	208	{
	209	int index = 0;
	210	unsigned int num_currents = ARRAY_SIZE(ls3_currents);
	211	struct tps65218 *tps = rdev_get_drvdata(dev);
	212
71a64ba2	213	while (index < num_currents && ls3_currents[index] <= max_uA)
c0ea88b8 NK	214	index++;
	215
	216	index--;
	217
	218	if (index < 0 \|\| ls3_currents[index] < min_uA)
	219	return -EINVAL;
	220
	221	return tps65218_set_bits(tps, dev->desc->csel_reg, dev->desc->csel_mask,
e5c8ba06 CH	222	index << __builtin_ctz(dev->desc->csel_mask),
e5c8ba06 CH	223	TPS65218_PROTECT_L1);
c0ea88b8 NK	224	}
c0ea88b8 NK	225
d1030b43	226	static const struct regulator_ops tps65218_ls23_ops = {
c0ea88b8 NK	227	.is_enabled = regulator_is_enabled_regmap,
	228	.enable = tps65218_pmic_enable,
	229	.disable = tps65218_pmic_disable,
	230	.set_input_current_limit = tps65218_pmic_set_input_current_lim,
	231	.set_current_limit = tps65218_pmic_set_current_limit,
7cfcecfb	232	.get_current_limit = regulator_get_current_limit_regmap,
c0ea88b8 NK	233	};
c0ea88b8 NK	234
90e7d526	235	/* Operations permitted on DCDC5, DCDC6 */
d1030b43	236	static const struct regulator_ops tps65218_dcdc56_pmic_ops = {
90e7d526 K	237	.is_enabled = regulator_is_enabled_regmap,
	238	.enable = tps65218_pmic_enable,
	239	.disable = tps65218_pmic_disable,
b9a0d359 TK	240	.set_suspend_enable = tps65218_pmic_set_suspend_enable,
b9a0d359 TK	241	.set_suspend_disable = tps65218_pmic_set_suspend_disable,
90e7d526 K	242	};
	243
	244	static const struct regulator_desc regulators[] = {
2dc49403 K	245	TPS65218_REGULATOR("DCDC1", "regulator-dcdc1", TPS65218_DCDC_1,
	246	REGULATOR_VOLTAGE, tps65218_dcdc12_ops, 64,
	247	TPS65218_REG_CONTROL_DCDC1,
c0ea88b8 NK	248	TPS65218_CONTROL_DCDC1_MASK, TPS65218_REG_ENABLE1,
c0ea88b8 NK	249	TPS65218_ENABLE1_DC1_EN, 0, 0, dcdc1_dcdc2_ranges,
b9a0d359	250	2, 4000, 0, TPS65218_REG_SEQ3,
7cfcecfb	251	TPS65218_SEQ3_DC1_SEQ_MASK, NULL, 0),
2dc49403 K	252	TPS65218_REGULATOR("DCDC2", "regulator-dcdc2", TPS65218_DCDC_2,
	253	REGULATOR_VOLTAGE, tps65218_dcdc12_ops, 64,
	254	TPS65218_REG_CONTROL_DCDC2,
c0ea88b8 NK	255	TPS65218_CONTROL_DCDC2_MASK, TPS65218_REG_ENABLE1,
c0ea88b8 NK	256	TPS65218_ENABLE1_DC2_EN, 0, 0, dcdc1_dcdc2_ranges,
b9a0d359	257	2, 4000, 0, TPS65218_REG_SEQ3,
7cfcecfb	258	TPS65218_SEQ3_DC2_SEQ_MASK, NULL, 0),
2dc49403 K	259	TPS65218_REGULATOR("DCDC3", "regulator-dcdc3", TPS65218_DCDC_3,
2dc49403 K	260	REGULATOR_VOLTAGE, tps65218_ldo1_dcdc34_ops, 64,
c0ea88b8	261	TPS65218_REG_CONTROL_DCDC3,
90e7d526	262	TPS65218_CONTROL_DCDC3_MASK, TPS65218_REG_ENABLE1,
c0ea88b8	263	TPS65218_ENABLE1_DC3_EN, 0, 0, ldo1_dcdc3_ranges, 2,
7cfcecfb AL	264	0, 0, TPS65218_REG_SEQ4, TPS65218_SEQ4_DC3_SEQ_MASK,
7cfcecfb AL	265	NULL, 0),
2dc49403 K	266	TPS65218_REGULATOR("DCDC4", "regulator-dcdc4", TPS65218_DCDC_4,
2dc49403 K	267	REGULATOR_VOLTAGE, tps65218_ldo1_dcdc34_ops, 53,
c0ea88b8 NK	268	TPS65218_REG_CONTROL_DCDC4,
	269	TPS65218_CONTROL_DCDC4_MASK, TPS65218_REG_ENABLE1,
	270	TPS65218_ENABLE1_DC4_EN, 0, 0, dcdc4_ranges, 2,
7cfcecfb AL	271	0, 0, TPS65218_REG_SEQ4, TPS65218_SEQ4_DC4_SEQ_MASK,
7cfcecfb AL	272	NULL, 0),
2dc49403 K	273	TPS65218_REGULATOR("DCDC5", "regulator-dcdc5", TPS65218_DCDC_5,
	274	REGULATOR_VOLTAGE, tps65218_dcdc56_pmic_ops, 1, -1,
	275	-1, TPS65218_REG_ENABLE1, TPS65218_ENABLE1_DC5_EN, 0,
	276	0, NULL, 0, 0, 1000000, TPS65218_REG_SEQ5,
7cfcecfb	277	TPS65218_SEQ5_DC5_SEQ_MASK, NULL, 0),
2dc49403 K	278	TPS65218_REGULATOR("DCDC6", "regulator-dcdc6", TPS65218_DCDC_6,
	279	REGULATOR_VOLTAGE, tps65218_dcdc56_pmic_ops, 1, -1,
	280	-1, TPS65218_REG_ENABLE1, TPS65218_ENABLE1_DC6_EN, 0,
	281	0, NULL, 0, 0, 1800000, TPS65218_REG_SEQ5,
7cfcecfb	282	TPS65218_SEQ5_DC6_SEQ_MASK, NULL, 0),
2dc49403 K	283	TPS65218_REGULATOR("LDO1", "regulator-ldo1", TPS65218_LDO_1,
2dc49403 K	284	REGULATOR_VOLTAGE, tps65218_ldo1_dcdc34_ops, 64,
0eada6a1	285	TPS65218_REG_CONTROL_LDO1,
90e7d526	286	TPS65218_CONTROL_LDO1_MASK, TPS65218_REG_ENABLE2,
c0ea88b8	287	TPS65218_ENABLE2_LDO1_EN, 0, 0, ldo1_dcdc3_ranges,
b9a0d359	288	2, 0, 0, TPS65218_REG_SEQ6,
7cfcecfb	289	TPS65218_SEQ6_LDO1_SEQ_MASK, NULL, 0),
e5c8ba06 CH	290	TPS65218_REGULATOR("LS2", "regulator-ls2", TPS65218_LS_2,
	291	REGULATOR_CURRENT, tps65218_ls23_ops, 0, 0, 0,
	292	TPS65218_REG_ENABLE2, TPS65218_ENABLE2_LS2_EN,
	293	TPS65218_REG_CONFIG2, TPS65218_CONFIG2_LS2ILIM_MASK,
7cfcecfb AL	294	NULL, 0, 0, 0, 0, 0, ls3_currents,
7cfcecfb AL	295	ARRAY_SIZE(ls3_currents)),
2dc49403	296	TPS65218_REGULATOR("LS3", "regulator-ls3", TPS65218_LS_3,
e5c8ba06	297	REGULATOR_CURRENT, tps65218_ls23_ops, 0, 0, 0,
2dc49403 K	298	TPS65218_REG_ENABLE2, TPS65218_ENABLE2_LS3_EN,
2dc49403 K	299	TPS65218_REG_CONFIG2, TPS65218_CONFIG2_LS3ILIM_MASK,
7cfcecfb AL	300	NULL, 0, 0, 0, 0, 0, ls3_currents,
7cfcecfb AL	301	ARRAY_SIZE(ls3_currents)),
90e7d526 K	302	};
	303
	304	static int tps65218_regulator_probe(struct platform_device *pdev)
	305	{
	306	struct tps65218 *tps = dev_get_drvdata(pdev->dev.parent);
90e7d526	307	struct regulator_dev *rdev;
90e7d526	308	struct regulator_config config = { };
2dc49403	309	int i, ret;
b9a0d359	310	unsigned int val;
90e7d526	311
90e7d526	312	config.dev = &pdev->dev;
2dc49403	313	config.dev->of_node = tps->dev->of_node;
90e7d526 K	314	config.driver_data = tps;
	315	config.regmap = tps->regmap;
	316
2dc49403	317	/* Allocate memory for strobes */
a86854d0 KC	318	tps->strobes = devm_kcalloc(&pdev->dev,
	319	TPS65218_NUM_REGULATOR, sizeof(u8),
	320	GFP_KERNEL);
5597bfb4 AL	321	if (!tps->strobes)
5597bfb4 AL	322	return -ENOMEM;
90e7d526	323
2dc49403 K	324	for (i = 0; i < ARRAY_SIZE(regulators); i++) {
	325	rdev = devm_regulator_register(&pdev->dev, &regulators[i],
	326	&config);
	327	if (IS_ERR(rdev)) {
	328	dev_err(tps->dev, "failed to register %s regulator\n",
	329	pdev->name);
	330	return PTR_ERR(rdev);
	331	}
b9a0d359	332
2dc49403 K	333	ret = regmap_read(tps->regmap, regulators[i].bypass_reg, &val);
	334	if (ret)
	335	return ret;
	336
	337	tps->strobes[i] = val & regulators[i].bypass_mask;
	338	}
b9a0d359	339
90e7d526 K	340	return 0;
	341	}
	342
2dc49403 K	343	static const struct platform_device_id tps65218_regulator_id_table[] = {
	344	{ "tps65218-regulator", },
	345	{ /* sentinel */ }
	346	};
	347	MODULE_DEVICE_TABLE(platform, tps65218_regulator_id_table);
	348
90e7d526 K	349	static struct platform_driver tps65218_regulator_driver = {
	350	.driver = {
	351	.name = "tps65218-pmic",
259b93b2	352	.probe_type = PROBE_PREFER_ASYNCHRONOUS,
90e7d526 K	353	},
90e7d526 K	354	.probe = tps65218_regulator_probe,
2dc49403	355	.id_table = tps65218_regulator_id_table,
90e7d526 K	356	};
	357
	358	module_platform_driver(tps65218_regulator_driver);
	359
	360	MODULE_AUTHOR("J Keerthy <j-keerthy@ti.com>");
	361	MODULE_DESCRIPTION("TPS65218 voltage regulator driver");
	362	MODULE_ALIAS("platform:tps65218-pmic");
	363	MODULE_LICENSE("GPL v2");