[mirror_ubuntu-hirsute-kernel.git] / drivers / regulator / lp87565-regulator.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Regulator driver for LP87565 PMIC
 *
 * Copyright (C) 2017 Texas Instruments Incorporated - https://www.ti.com/
 */

#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>

#include <linux/mfd/lp87565.h>

#define LP87565_REGULATOR(_name, _id, _of, _ops, _n, _vr, _vm,		\
			  _er, _em, _ev, _delay, _lr, _cr)		\
	[_id] = {							\
		.desc = {						\
			.name			= _name,		\
			.supply_name		= _of "-in",		\
			.id			= _id,			\
			.of_match		= of_match_ptr(_of),	\
			.regulators_node	= of_match_ptr("regulators"),\
			.ops			= &_ops,		\
			.n_voltages		= _n,			\
			.type			= REGULATOR_VOLTAGE,	\
			.owner			= THIS_MODULE,		\
			.vsel_reg		= _vr,			\
			.vsel_mask		= _vm,			\
			.enable_reg		= _er,			\
			.enable_mask		= _em,			\
			.enable_val		= _ev,			\
			.ramp_delay		= _delay,		\
			.linear_ranges		= _lr,			\
			.n_linear_ranges	= ARRAY_SIZE(_lr),	\
			.curr_table = lp87565_buck_uA,			\
			.n_current_limits = ARRAY_SIZE(lp87565_buck_uA),\
			.csel_reg = (_cr),				\
			.csel_mask = LP87565_BUCK_CTRL_2_ILIM,		\
		},							\
		.ctrl2_reg = _cr,					\
	}

struct lp87565_regulator {
	struct regulator_desc desc;
	unsigned int ctrl2_reg;
};

static const struct lp87565_regulator regulators[];

static const struct linear_range buck0_1_2_3_ranges[] = {
	REGULATOR_LINEAR_RANGE(600000, 0xA, 0x17, 10000),
	REGULATOR_LINEAR_RANGE(735000, 0x18, 0x9d, 5000),
	REGULATOR_LINEAR_RANGE(1420000, 0x9e, 0xff, 20000),
};

static const unsigned int lp87565_buck_ramp_delay[] = {
	30000, 15000, 10000, 7500, 3800, 1900, 940, 470
};

/* LP87565 BUCK current limit */
static const unsigned int lp87565_buck_uA[] = {
	1500000, 2000000, 2500000, 3000000, 3500000, 4000000, 4500000, 5000000,
};

static int lp87565_buck_set_ramp_delay(struct regulator_dev *rdev,
				       int ramp_delay)
{
	int id = rdev_get_id(rdev);
	unsigned int reg;
	int ret;

	if (ramp_delay <= 470)
		reg = 7;
	else if (ramp_delay <= 940)
		reg = 6;
	else if (ramp_delay <= 1900)
		reg = 5;
	else if (ramp_delay <= 3800)
		reg = 4;
	else if (ramp_delay <= 7500)
		reg = 3;
	else if (ramp_delay <= 10000)
		reg = 2;
	else if (ramp_delay <= 15000)
		reg = 1;
	else
		reg = 0;

	ret = regmap_update_bits(rdev->regmap, regulators[id].ctrl2_reg,
				 LP87565_BUCK_CTRL_2_SLEW_RATE,
				 reg << __ffs(LP87565_BUCK_CTRL_2_SLEW_RATE));
	if (ret) {
		dev_err(&rdev->dev, "SLEW RATE write failed: %d\n", ret);
		return ret;
	}

	rdev->constraints->ramp_delay = lp87565_buck_ramp_delay[reg];

	/* Conservatively give a 15% margin */
	rdev->constraints->ramp_delay =
				rdev->constraints->ramp_delay * 85 / 100;

	return 0;
}

/* Operations permitted on BUCKs */
static const struct regulator_ops lp87565_buck_ops = {
	.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,
	.list_voltage		= regulator_list_voltage_linear_range,
	.map_voltage		= regulator_map_voltage_linear_range,
	.set_voltage_time_sel	= regulator_set_voltage_time_sel,
	.set_ramp_delay		= lp87565_buck_set_ramp_delay,
	.set_current_limit	= regulator_set_current_limit_regmap,
	.get_current_limit	= regulator_get_current_limit_regmap,
};

static const struct lp87565_regulator regulators[] = {
	LP87565_REGULATOR("BUCK0", LP87565_BUCK_0, "buck0", lp87565_buck_ops,
			  256, LP87565_REG_BUCK0_VOUT, LP87565_BUCK_VSET,
			  LP87565_REG_BUCK0_CTRL_1,
			  LP87565_BUCK_CTRL_1_EN |
			  LP87565_BUCK_CTRL_1_EN_PIN_CTRL,
			  LP87565_BUCK_CTRL_1_EN, 3230,
			  buck0_1_2_3_ranges, LP87565_REG_BUCK0_CTRL_2),
	LP87565_REGULATOR("BUCK1", LP87565_BUCK_1, "buck1", lp87565_buck_ops,
			  256, LP87565_REG_BUCK1_VOUT, LP87565_BUCK_VSET,
			  LP87565_REG_BUCK1_CTRL_1,
			  LP87565_BUCK_CTRL_1_EN |
			  LP87565_BUCK_CTRL_1_EN_PIN_CTRL,
			  LP87565_BUCK_CTRL_1_EN, 3230,
			  buck0_1_2_3_ranges, LP87565_REG_BUCK1_CTRL_2),
	LP87565_REGULATOR("BUCK2", LP87565_BUCK_2, "buck2", lp87565_buck_ops,
			  256, LP87565_REG_BUCK2_VOUT, LP87565_BUCK_VSET,
			  LP87565_REG_BUCK2_CTRL_1,
			  LP87565_BUCK_CTRL_1_EN |
			  LP87565_BUCK_CTRL_1_EN_PIN_CTRL,
			  LP87565_BUCK_CTRL_1_EN, 3230,
			  buck0_1_2_3_ranges, LP87565_REG_BUCK2_CTRL_2),
	LP87565_REGULATOR("BUCK3", LP87565_BUCK_3, "buck3", lp87565_buck_ops,
			  256, LP87565_REG_BUCK3_VOUT, LP87565_BUCK_VSET,
			  LP87565_REG_BUCK3_CTRL_1,
			  LP87565_BUCK_CTRL_1_EN |
			  LP87565_BUCK_CTRL_1_EN_PIN_CTRL,
			  LP87565_BUCK_CTRL_1_EN, 3230,
			  buck0_1_2_3_ranges, LP87565_REG_BUCK3_CTRL_2),
	LP87565_REGULATOR("BUCK10", LP87565_BUCK_10, "buck10", lp87565_buck_ops,
			  256, LP87565_REG_BUCK0_VOUT, LP87565_BUCK_VSET,
			  LP87565_REG_BUCK0_CTRL_1,
			  LP87565_BUCK_CTRL_1_EN |
			  LP87565_BUCK_CTRL_1_EN_PIN_CTRL |
			  LP87565_BUCK_CTRL_1_FPWM_MP_0_2,
			  LP87565_BUCK_CTRL_1_EN |
			  LP87565_BUCK_CTRL_1_FPWM_MP_0_2, 3230,
			  buck0_1_2_3_ranges, LP87565_REG_BUCK0_CTRL_2),
	LP87565_REGULATOR("BUCK23", LP87565_BUCK_23, "buck23", lp87565_buck_ops,
			  256, LP87565_REG_BUCK2_VOUT, LP87565_BUCK_VSET,
			  LP87565_REG_BUCK2_CTRL_1,
			  LP87565_BUCK_CTRL_1_EN |
			  LP87565_BUCK_CTRL_1_EN_PIN_CTRL,
			  LP87565_BUCK_CTRL_1_EN, 3230,
			  buck0_1_2_3_ranges, LP87565_REG_BUCK2_CTRL_2),
	LP87565_REGULATOR("BUCK3210", LP87565_BUCK_3210, "buck3210",
			  lp87565_buck_ops, 256, LP87565_REG_BUCK0_VOUT,
			  LP87565_BUCK_VSET, LP87565_REG_BUCK0_CTRL_1,
			  LP87565_BUCK_CTRL_1_EN |
			  LP87565_BUCK_CTRL_1_EN_PIN_CTRL |
			  LP87565_BUCK_CTRL_1_FPWM_MP_0_2,
			  LP87565_BUCK_CTRL_1_EN |
			  LP87565_BUCK_CTRL_1_FPWM_MP_0_2, 3230,
			  buck0_1_2_3_ranges, LP87565_REG_BUCK0_CTRL_2),
};

static int lp87565_regulator_probe(struct platform_device *pdev)
{
	struct lp87565 *lp87565 = dev_get_drvdata(pdev->dev.parent);
	struct regulator_config config = { };
	struct regulator_dev *rdev;
	int i, min_idx, max_idx;

	platform_set_drvdata(pdev, lp87565);

	config.dev = &pdev->dev;
	config.dev->of_node = lp87565->dev->of_node;
	config.driver_data = lp87565;
	config.regmap = lp87565->regmap;

	switch (lp87565->dev_type) {
	case LP87565_DEVICE_TYPE_LP87565_Q1:
		min_idx = LP87565_BUCK_10;
		max_idx = LP87565_BUCK_23;
		break;
	case LP87565_DEVICE_TYPE_LP87561_Q1:
		min_idx = LP87565_BUCK_3210;
		max_idx = LP87565_BUCK_3210;
		break;
	default:
		min_idx = LP87565_BUCK_0;
		max_idx = LP87565_BUCK_3;
		break;
	}

	for (i = min_idx; i <= max_idx; i++) {
		rdev = devm_regulator_register(&pdev->dev, &regulators[i].desc,
					       &config);
		if (IS_ERR(rdev)) {
			dev_err(lp87565->dev, "failed to register %s regulator\n",
				pdev->name);
			return PTR_ERR(rdev);
		}
	}

	return 0;
}

static const struct platform_device_id lp87565_regulator_id_table[] = {
	{ "lp87565-regulator", },
	{ "lp87565-q1-regulator", },
	{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(platform, lp87565_regulator_id_table);

static struct platform_driver lp87565_regulator_driver = {
	.driver = {
		.name = "lp87565-pmic",
	},
	.probe = lp87565_regulator_probe,
	.id_table = lp87565_regulator_id_table,
};
module_platform_driver(lp87565_regulator_driver);

MODULE_AUTHOR("J Keerthy <j-keerthy@ti.com>");
MODULE_DESCRIPTION("LP87565 voltage regulator driver");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
a10e763b	1	// SPDX-License-Identifier: GPL-2.0-only
f0168a9b K	2	/*
	3	* Regulator driver for LP87565 PMIC
	4	*
2ca76b3e	5	* Copyright (C) 2017 Texas Instruments Incorporated - https://www.ti.com/
f0168a9b K	6	*/
	7
	8	#include <linux/module.h>
	9	#include <linux/platform_device.h>
	10	#include <linux/regmap.h>
	11
	12	#include <linux/mfd/lp87565.h>
	13
81fdcef3 LC	14	#define LP87565_REGULATOR(_name, _id, _of, _ops, _n, _vr, _vm, \
81fdcef3 LC	15	_er, _em, _ev, _delay, _lr, _cr) \
f0168a9b K	16	[_id] = { \
	17	.desc = { \
	18	.name = _name, \
	19	.supply_name = _of "-in", \
	20	.id = _id, \
	21	.of_match = of_match_ptr(_of), \
	22	.regulators_node = of_match_ptr("regulators"),\
	23	.ops = &_ops, \
	24	.n_voltages = _n, \
	25	.type = REGULATOR_VOLTAGE, \
	26	.owner = THIS_MODULE, \
	27	.vsel_reg = _vr, \
	28	.vsel_mask = _vm, \
	29	.enable_reg = _er, \
	30	.enable_mask = _em, \
81fdcef3	31	.enable_val = _ev, \
f0168a9b K	32	.ramp_delay = _delay, \
	33	.linear_ranges = _lr, \
	34	.n_linear_ranges = ARRAY_SIZE(_lr), \
d0ccbe11 AL	35	.curr_table = lp87565_buck_uA, \
	36	.n_current_limits = ARRAY_SIZE(lp87565_buck_uA),\
	37	.csel_reg = (_cr), \
	38	.csel_mask = LP87565_BUCK_CTRL_2_ILIM, \
f0168a9b K	39	}, \
	40	.ctrl2_reg = _cr, \
	41	}
	42
	43	struct lp87565_regulator {
	44	struct regulator_desc desc;
	45	unsigned int ctrl2_reg;
	46	};
	47
	48	static const struct lp87565_regulator regulators[];
	49
60ab7f41	50	static const struct linear_range buck0_1_2_3_ranges[] = {
42f1ea48	51	REGULATOR_LINEAR_RANGE(600000, 0xA, 0x17, 10000),
f0168a9b K	52	REGULATOR_LINEAR_RANGE(735000, 0x18, 0x9d, 5000),
	53	REGULATOR_LINEAR_RANGE(1420000, 0x9e, 0xff, 20000),
	54	};
	55
b7fbc592	56	static const unsigned int lp87565_buck_ramp_delay[] = {
f0168a9b K	57	30000, 15000, 10000, 7500, 3800, 1900, 940, 470
	58	};
	59
	60	/* LP87565 BUCK current limit */
	61	static const unsigned int lp87565_buck_uA[] = {
	62	1500000, 2000000, 2500000, 3000000, 3500000, 4000000, 4500000, 5000000,
	63	};
	64
	65	static int lp87565_buck_set_ramp_delay(struct regulator_dev *rdev,
	66	int ramp_delay)
	67	{
	68	int id = rdev_get_id(rdev);
f0168a9b K	69	unsigned int reg;
	70	int ret;
	71
	72	if (ramp_delay <= 470)
	73	reg = 7;
	74	else if (ramp_delay <= 940)
	75	reg = 6;
	76	else if (ramp_delay <= 1900)
	77	reg = 5;
	78	else if (ramp_delay <= 3800)
	79	reg = 4;
	80	else if (ramp_delay <= 7500)
	81	reg = 3;
	82	else if (ramp_delay <= 10000)
	83	reg = 2;
	84	else if (ramp_delay <= 15000)
	85	reg = 1;
	86	else
	87	reg = 0;
	88
6cadd8ae	89	ret = regmap_update_bits(rdev->regmap, regulators[id].ctrl2_reg,
f0168a9b K	90	LP87565_BUCK_CTRL_2_SLEW_RATE,
	91	reg << __ffs(LP87565_BUCK_CTRL_2_SLEW_RATE));
	92	if (ret) {
6cadd8ae	93	dev_err(&rdev->dev, "SLEW RATE write failed: %d\n", ret);
f0168a9b K	94	return ret;
	95	}
	96
	97	rdev->constraints->ramp_delay = lp87565_buck_ramp_delay[reg];
	98
2d045e94 K	99	/* Conservatively give a 15% margin */
	100	rdev->constraints->ramp_delay =
	101	rdev->constraints->ramp_delay * 85 / 100;
	102
f0168a9b K	103	return 0;
	104	}
	105
d0ccbe11	106	/* Operations permitted on BUCKs */
b7fbc592	107	static const struct regulator_ops lp87565_buck_ops = {
f0168a9b K	108	.is_enabled = regulator_is_enabled_regmap,
	109	.enable = regulator_enable_regmap,
	110	.disable = regulator_disable_regmap,
	111	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	112	.set_voltage_sel = regulator_set_voltage_sel_regmap,
	113	.list_voltage = regulator_list_voltage_linear_range,
	114	.map_voltage = regulator_map_voltage_linear_range,
	115	.set_voltage_time_sel = regulator_set_voltage_time_sel,
	116	.set_ramp_delay = lp87565_buck_set_ramp_delay,
d0ccbe11 AL	117	.set_current_limit = regulator_set_current_limit_regmap,
d0ccbe11 AL	118	.get_current_limit = regulator_get_current_limit_regmap,
f0168a9b K	119	};
	120
	121	static const struct lp87565_regulator regulators[] = {
	122	LP87565_REGULATOR("BUCK0", LP87565_BUCK_0, "buck0", lp87565_buck_ops,
	123	256, LP87565_REG_BUCK0_VOUT, LP87565_BUCK_VSET,
	124	LP87565_REG_BUCK0_CTRL_1,
81fdcef3 LC	125	LP87565_BUCK_CTRL_1_EN \|
81fdcef3 LC	126	LP87565_BUCK_CTRL_1_EN_PIN_CTRL,
2d045e94	127	LP87565_BUCK_CTRL_1_EN, 3230,
f0168a9b K	128	buck0_1_2_3_ranges, LP87565_REG_BUCK0_CTRL_2),
	129	LP87565_REGULATOR("BUCK1", LP87565_BUCK_1, "buck1", lp87565_buck_ops,
	130	256, LP87565_REG_BUCK1_VOUT, LP87565_BUCK_VSET,
	131	LP87565_REG_BUCK1_CTRL_1,
81fdcef3 LC	132	LP87565_BUCK_CTRL_1_EN \|
81fdcef3 LC	133	LP87565_BUCK_CTRL_1_EN_PIN_CTRL,
2d045e94	134	LP87565_BUCK_CTRL_1_EN, 3230,
f0168a9b K	135	buck0_1_2_3_ranges, LP87565_REG_BUCK1_CTRL_2),
	136	LP87565_REGULATOR("BUCK2", LP87565_BUCK_2, "buck2", lp87565_buck_ops,
	137	256, LP87565_REG_BUCK2_VOUT, LP87565_BUCK_VSET,
	138	LP87565_REG_BUCK2_CTRL_1,
81fdcef3 LC	139	LP87565_BUCK_CTRL_1_EN \|
81fdcef3 LC	140	LP87565_BUCK_CTRL_1_EN_PIN_CTRL,
2d045e94	141	LP87565_BUCK_CTRL_1_EN, 3230,
f0168a9b K	142	buck0_1_2_3_ranges, LP87565_REG_BUCK2_CTRL_2),
	143	LP87565_REGULATOR("BUCK3", LP87565_BUCK_3, "buck3", lp87565_buck_ops,
	144	256, LP87565_REG_BUCK3_VOUT, LP87565_BUCK_VSET,
	145	LP87565_REG_BUCK3_CTRL_1,
81fdcef3 LC	146	LP87565_BUCK_CTRL_1_EN \|
81fdcef3 LC	147	LP87565_BUCK_CTRL_1_EN_PIN_CTRL,
2d045e94	148	LP87565_BUCK_CTRL_1_EN, 3230,
f0168a9b K	149	buck0_1_2_3_ranges, LP87565_REG_BUCK3_CTRL_2),
	150	LP87565_REGULATOR("BUCK10", LP87565_BUCK_10, "buck10", lp87565_buck_ops,
	151	256, LP87565_REG_BUCK0_VOUT, LP87565_BUCK_VSET,
	152	LP87565_REG_BUCK0_CTRL_1,
2f51a260	153	LP87565_BUCK_CTRL_1_EN \|
81fdcef3 LC	154	LP87565_BUCK_CTRL_1_EN_PIN_CTRL \|
	155	LP87565_BUCK_CTRL_1_FPWM_MP_0_2,
	156	LP87565_BUCK_CTRL_1_EN \|
2f51a260	157	LP87565_BUCK_CTRL_1_FPWM_MP_0_2, 3230,
f0168a9b K	158	buck0_1_2_3_ranges, LP87565_REG_BUCK0_CTRL_2),
	159	LP87565_REGULATOR("BUCK23", LP87565_BUCK_23, "buck23", lp87565_buck_ops,
	160	256, LP87565_REG_BUCK2_VOUT, LP87565_BUCK_VSET,
	161	LP87565_REG_BUCK2_CTRL_1,
81fdcef3 LC	162	LP87565_BUCK_CTRL_1_EN \|
81fdcef3 LC	163	LP87565_BUCK_CTRL_1_EN_PIN_CTRL,
2d045e94	164	LP87565_BUCK_CTRL_1_EN, 3230,
f0168a9b	165	buck0_1_2_3_ranges, LP87565_REG_BUCK2_CTRL_2),
7ee63bd7 K	166	LP87565_REGULATOR("BUCK3210", LP87565_BUCK_3210, "buck3210",
	167	lp87565_buck_ops, 256, LP87565_REG_BUCK0_VOUT,
	168	LP87565_BUCK_VSET, LP87565_REG_BUCK0_CTRL_1,
	169	LP87565_BUCK_CTRL_1_EN \|
81fdcef3 LC	170	LP87565_BUCK_CTRL_1_EN_PIN_CTRL \|
	171	LP87565_BUCK_CTRL_1_FPWM_MP_0_2,
	172	LP87565_BUCK_CTRL_1_EN \|
7ee63bd7 K	173	LP87565_BUCK_CTRL_1_FPWM_MP_0_2, 3230,
7ee63bd7 K	174	buck0_1_2_3_ranges, LP87565_REG_BUCK0_CTRL_2),
f0168a9b K	175	};
	176
	177	static int lp87565_regulator_probe(struct platform_device *pdev)
	178	{
	179	struct lp87565 *lp87565 = dev_get_drvdata(pdev->dev.parent);
	180	struct regulator_config config = { };
	181	struct regulator_dev *rdev;
a853c0a0	182	int i, min_idx, max_idx;
f0168a9b K	183
	184	platform_set_drvdata(pdev, lp87565);
	185
	186	config.dev = &pdev->dev;
	187	config.dev->of_node = lp87565->dev->of_node;
	188	config.driver_data = lp87565;
	189	config.regmap = lp87565->regmap;
	190
7ee63bd7 K	191	switch (lp87565->dev_type) {
7ee63bd7 K	192	case LP87565_DEVICE_TYPE_LP87565_Q1:
f0168a9b K	193	min_idx = LP87565_BUCK_10;
f0168a9b K	194	max_idx = LP87565_BUCK_23;
7ee63bd7 K	195	break;
	196	case LP87565_DEVICE_TYPE_LP87561_Q1:
	197	min_idx = LP87565_BUCK_3210;
	198	max_idx = LP87565_BUCK_3210;
f3f4363b	199	break;
7ee63bd7	200	default:
a853c0a0 AL	201	min_idx = LP87565_BUCK_0;
	202	max_idx = LP87565_BUCK_3;
	203	break;
f0168a9b K	204	}
	205
	206	for (i = min_idx; i <= max_idx; i++) {
	207	rdev = devm_regulator_register(&pdev->dev, &regulators[i].desc,
	208	&config);
	209	if (IS_ERR(rdev)) {
	210	dev_err(lp87565->dev, "failed to register %s regulator\n",
	211	pdev->name);
	212	return PTR_ERR(rdev);
	213	}
	214	}
	215
	216	return 0;
	217	}
	218
	219	static const struct platform_device_id lp87565_regulator_id_table[] = {
	220	{ "lp87565-regulator", },
	221	{ "lp87565-q1-regulator", },
	222	{ /* sentinel */ }
	223	};
	224	MODULE_DEVICE_TABLE(platform, lp87565_regulator_id_table);
	225
	226	static struct platform_driver lp87565_regulator_driver = {
	227	.driver = {
	228	.name = "lp87565-pmic",
	229	},
	230	.probe = lp87565_regulator_probe,
	231	.id_table = lp87565_regulator_id_table,
	232	};
	233	module_platform_driver(lp87565_regulator_driver);
	234
	235	MODULE_AUTHOR("J Keerthy <j-keerthy@ti.com>");
	236	MODULE_DESCRIPTION("LP87565 voltage regulator driver");
	237	MODULE_LICENSE("GPL v2");