[mirror_ubuntu-jammy-kernel.git] / drivers / regulator / hi655x-regulator.c

/*
 * Device driver for regulators in Hi655x IC
 *
 * Copyright (c) 2016 Hisilicon.
 *
 * Authors:
 * Chen Feng <puck.chen@hisilicon.com>
 * Fei  Wang <w.f@huawei.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.
 */

#include <linux/bitops.h>
#include <linux/device.h>
#include <linux/err.h>
#include <linux/module.h>
#include <linux/io.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/of_regulator.h>
#include <linux/mfd/hi655x-pmic.h>

struct hi655x_regulator {
	unsigned int disable_reg;
	unsigned int status_reg;
	struct regulator_desc rdesc;
};

/* LDO7 & LDO10 */
static const unsigned int ldo7_voltages[] = {
	1800000, 1850000, 2850000, 2900000,
	3000000, 3100000, 3200000, 3300000,
};

static const unsigned int ldo19_voltages[] = {
	1800000, 1850000, 1900000, 1750000,
	2800000, 2850000, 2900000, 3000000,
};

static const unsigned int ldo22_voltages[] = {
	 900000, 1000000, 1050000, 1100000,
	1150000, 1175000, 1185000, 1200000,
};

enum hi655x_regulator_id {
	HI655X_LDO0,
	HI655X_LDO1,
	HI655X_LDO2,
	HI655X_LDO3,
	HI655X_LDO4,
	HI655X_LDO5,
	HI655X_LDO6,
	HI655X_LDO7,
	HI655X_LDO8,
	HI655X_LDO9,
	HI655X_LDO10,
	HI655X_LDO11,
	HI655X_LDO12,
	HI655X_LDO13,
	HI655X_LDO14,
	HI655X_LDO15,
	HI655X_LDO16,
	HI655X_LDO17,
	HI655X_LDO18,
	HI655X_LDO19,
	HI655X_LDO20,
	HI655X_LDO21,
	HI655X_LDO22,
};

static int hi655x_is_enabled(struct regulator_dev *rdev)
{
	unsigned int value = 0;
	struct hi655x_regulator *regulator = rdev_get_drvdata(rdev);

	regmap_read(rdev->regmap, regulator->status_reg, &value);
	return (value & rdev->desc->enable_mask);
}

static int hi655x_disable(struct regulator_dev *rdev)
{
	struct hi655x_regulator *regulator = rdev_get_drvdata(rdev);

	return regmap_write(rdev->regmap, regulator->disable_reg,
			    rdev->desc->enable_mask);
}

static const struct regulator_ops hi655x_regulator_ops = {
	.enable = regulator_enable_regmap,
	.disable = hi655x_disable,
	.is_enabled = hi655x_is_enabled,
	.list_voltage = regulator_list_voltage_table,
	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	.set_voltage_sel = regulator_set_voltage_sel_regmap,
};

static const struct regulator_ops hi655x_ldo_linear_ops = {
	.enable = regulator_enable_regmap,
	.disable = hi655x_disable,
	.is_enabled = hi655x_is_enabled,
	.list_voltage = regulator_list_voltage_linear,
	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	.set_voltage_sel = regulator_set_voltage_sel_regmap,
};

#define HI655X_LDO(_ID, vreg, vmask, ereg, dreg,                 \
		   sreg, cmask, vtable) {                        \
	.rdesc = {                                               \
		.name            = #_ID,                         \
		.of_match        = of_match_ptr(#_ID),           \
		.ops             = &hi655x_regulator_ops,        \
		.regulators_node = of_match_ptr("regulators"),   \
		.type            = REGULATOR_VOLTAGE,            \
		.id              = HI655X_##_ID,                 \
		.owner           = THIS_MODULE,                  \
		.n_voltages      = ARRAY_SIZE(vtable),           \
		.volt_table      = vtable,                       \
		.vsel_reg        = HI655X_BUS_ADDR(vreg),        \
		.vsel_mask       = vmask,                        \
		.enable_reg      = HI655X_BUS_ADDR(ereg),        \
		.enable_mask     = BIT(cmask),                   \
	},                                                       \
	.disable_reg = HI655X_BUS_ADDR(dreg),                    \
	.status_reg = HI655X_BUS_ADDR(sreg),                     \
}

#define HI655X_LDO_LINEAR(_ID, vreg, vmask, ereg, dreg,          \
			  sreg, cmask, minv, nvolt, vstep) {     \
	.rdesc = {                                               \
		.name            = #_ID,                         \
		.of_match        = of_match_ptr(#_ID),           \
		.ops             = &hi655x_ldo_linear_ops,       \
		.regulators_node = of_match_ptr("regulators"),   \
		.type            = REGULATOR_VOLTAGE,            \
		.id              = HI655X_##_ID,                 \
		.owner           = THIS_MODULE,                  \
		.min_uV          = minv,                         \
		.n_voltages      = nvolt,                        \
		.uV_step         = vstep,                        \
		.vsel_reg        = HI655X_BUS_ADDR(vreg),        \
		.vsel_mask       = vmask,                        \
		.enable_reg      = HI655X_BUS_ADDR(ereg),        \
		.enable_mask     = BIT(cmask),                   \
	},                                                       \
	.disable_reg = HI655X_BUS_ADDR(dreg),                    \
	.status_reg = HI655X_BUS_ADDR(sreg),                     \
}

static const struct hi655x_regulator regulators[] = {
	HI655X_LDO_LINEAR(LDO2, 0x72, 0x07, 0x29, 0x2a, 0x2b, 0x01,
			  2500000, 8, 100000),
	HI655X_LDO(LDO7, 0x78, 0x07, 0x29, 0x2a, 0x2b, 0x06, ldo7_voltages),
	HI655X_LDO(LDO10, 0x78, 0x07, 0x29, 0x2a, 0x2b, 0x01, ldo7_voltages),
	HI655X_LDO_LINEAR(LDO13, 0x7e, 0x07, 0x2c, 0x2d, 0x2e, 0x04,
			  1600000, 8, 50000),
	HI655X_LDO_LINEAR(LDO14, 0x7f, 0x07, 0x2c, 0x2d, 0x2e, 0x05,
			  2500000, 8, 100000),
	HI655X_LDO_LINEAR(LDO15, 0x80, 0x07, 0x2c, 0x2d, 0x2e, 0x06,
			  1600000, 8, 50000),
	HI655X_LDO_LINEAR(LDO17, 0x82, 0x07, 0x2f, 0x30, 0x31, 0x00,
			  2500000, 8, 100000),
	HI655X_LDO(LDO19, 0x84, 0x07, 0x2f, 0x30, 0x31, 0x02, ldo19_voltages),
	HI655X_LDO_LINEAR(LDO21, 0x86, 0x07, 0x2f, 0x30, 0x31, 0x04,
			  1650000, 8, 50000),
	HI655X_LDO(LDO22, 0x87, 0x07, 0x2f, 0x30, 0x31, 0x05, ldo22_voltages),
};

static int hi655x_regulator_probe(struct platform_device *pdev)
{
	unsigned int i;
	struct hi655x_regulator *regulator;
	struct hi655x_pmic *pmic;
	struct regulator_config config = { };
	struct regulator_dev *rdev;

	pmic = dev_get_drvdata(pdev->dev.parent);
	if (!pmic) {
		dev_err(&pdev->dev, "no pmic in the regulator parent node\n");
		return -ENODEV;
	}

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

	platform_set_drvdata(pdev, regulator);

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

static const struct platform_device_id hi655x_regulator_table[] = {
	{ .name = "hi655x-regulator" },
	{},
};
MODULE_DEVICE_TABLE(platform, hi655x_regulator_table);

static struct platform_driver hi655x_regulator_driver = {
	.id_table = hi655x_regulator_table,
	.driver = {
		.name	= "hi655x-regulator",
	},
	.probe	= hi655x_regulator_probe,
};
module_platform_driver(hi655x_regulator_driver);

MODULE_AUTHOR("Chen Feng <puck.chen@hisilicon.com>");
MODULE_DESCRIPTION("Hisilicon Hi655x regulator driver");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
4618119b CF	1	/*
	2	* Device driver for regulators in Hi655x IC
	3	*
	4	* Copyright (c) 2016 Hisilicon.
	5	*
	6	* Authors:
	7	* Chen Feng <puck.chen@hisilicon.com>
	8	* Fei Wang <w.f@huawei.com>
	9	*
	10	* This program is free software; you can redistribute it and/or modify
	11	* it under the terms of the GNU General Public License version 2 as
	12	* published by the Free Software Foundation.
	13	*/
	14
	15	#include <linux/bitops.h>
	16	#include <linux/device.h>
	17	#include <linux/err.h>
	18	#include <linux/module.h>
	19	#include <linux/io.h>
	20	#include <linux/of.h>
	21	#include <linux/platform_device.h>
	22	#include <linux/regmap.h>
	23	#include <linux/regulator/driver.h>
	24	#include <linux/regulator/machine.h>
	25	#include <linux/regulator/of_regulator.h>
	26	#include <linux/mfd/hi655x-pmic.h>
	27
	28	struct hi655x_regulator {
	29	unsigned int disable_reg;
	30	unsigned int status_reg;
4618119b CF	31	struct regulator_desc rdesc;
	32	};
	33
	34	/* LDO7 & LDO10 */
	35	static const unsigned int ldo7_voltages[] = {
	36	1800000, 1850000, 2850000, 2900000,
	37	3000000, 3100000, 3200000, 3300000,
	38	};
	39
	40	static const unsigned int ldo19_voltages[] = {
	41	1800000, 1850000, 1900000, 1750000,
	42	2800000, 2850000, 2900000, 3000000,
	43	};
	44
	45	static const unsigned int ldo22_voltages[] = {
	46	900000, 1000000, 1050000, 1100000,
	47	1150000, 1175000, 1185000, 1200000,
	48	};
	49
	50	enum hi655x_regulator_id {
	51	HI655X_LDO0,
	52	HI655X_LDO1,
	53	HI655X_LDO2,
	54	HI655X_LDO3,
	55	HI655X_LDO4,
	56	HI655X_LDO5,
	57	HI655X_LDO6,
	58	HI655X_LDO7,
	59	HI655X_LDO8,
	60	HI655X_LDO9,
	61	HI655X_LDO10,
	62	HI655X_LDO11,
	63	HI655X_LDO12,
	64	HI655X_LDO13,
	65	HI655X_LDO14,
	66	HI655X_LDO15,
	67	HI655X_LDO16,
	68	HI655X_LDO17,
	69	HI655X_LDO18,
	70	HI655X_LDO19,
	71	HI655X_LDO20,
	72	HI655X_LDO21,
	73	HI655X_LDO22,
	74	};
	75
	76	static int hi655x_is_enabled(struct regulator_dev *rdev)
	77	{
	78	unsigned int value = 0;
4618119b CF	79	struct hi655x_regulator *regulator = rdev_get_drvdata(rdev);
	80
	81	regmap_read(rdev->regmap, regulator->status_reg, &value);
29e5cb65	82	return (value & rdev->desc->enable_mask);
4618119b CF	83	}
	84
	85	static int hi655x_disable(struct regulator_dev *rdev)
	86	{
4618119b CF	87	struct hi655x_regulator *regulator = rdev_get_drvdata(rdev);
4618119b CF	88
29e5cb65 AL	89	return regmap_write(rdev->regmap, regulator->disable_reg,
29e5cb65 AL	90	rdev->desc->enable_mask);
4618119b CF	91	}
4618119b CF	92
dc83c94a	93	static const struct regulator_ops hi655x_regulator_ops = {
4618119b CF	94	.enable = regulator_enable_regmap,
	95	.disable = hi655x_disable,
	96	.is_enabled = hi655x_is_enabled,
	97	.list_voltage = regulator_list_voltage_table,
	98	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	99	.set_voltage_sel = regulator_set_voltage_sel_regmap,
	100	};
	101
dc83c94a	102	static const struct regulator_ops hi655x_ldo_linear_ops = {
4618119b CF	103	.enable = regulator_enable_regmap,
	104	.disable = hi655x_disable,
	105	.is_enabled = hi655x_is_enabled,
	106	.list_voltage = regulator_list_voltage_linear,
	107	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	108	.set_voltage_sel = regulator_set_voltage_sel_regmap,
	109	};
	110
	111	#define HI655X_LDO(_ID, vreg, vmask, ereg, dreg, \
	112	sreg, cmask, vtable) { \
	113	.rdesc = { \
	114	.name = #_ID, \
	115	.of_match = of_match_ptr(#_ID), \
	116	.ops = &hi655x_regulator_ops, \
	117	.regulators_node = of_match_ptr("regulators"), \
	118	.type = REGULATOR_VOLTAGE, \
	119	.id = HI655X_##_ID, \
	120	.owner = THIS_MODULE, \
	121	.n_voltages = ARRAY_SIZE(vtable), \
	122	.volt_table = vtable, \
	123	.vsel_reg = HI655X_BUS_ADDR(vreg), \
	124	.vsel_mask = vmask, \
	125	.enable_reg = HI655X_BUS_ADDR(ereg), \
	126	.enable_mask = BIT(cmask), \
	127	}, \
	128	.disable_reg = HI655X_BUS_ADDR(dreg), \
	129	.status_reg = HI655X_BUS_ADDR(sreg), \
4618119b CF	130	}
	131
	132	#define HI655X_LDO_LINEAR(_ID, vreg, vmask, ereg, dreg, \
	133	sreg, cmask, minv, nvolt, vstep) { \
	134	.rdesc = { \
	135	.name = #_ID, \
	136	.of_match = of_match_ptr(#_ID), \
	137	.ops = &hi655x_ldo_linear_ops, \
	138	.regulators_node = of_match_ptr("regulators"), \
	139	.type = REGULATOR_VOLTAGE, \
	140	.id = HI655X_##_ID, \
	141	.owner = THIS_MODULE, \
	142	.min_uV = minv, \
	143	.n_voltages = nvolt, \
	144	.uV_step = vstep, \
	145	.vsel_reg = HI655X_BUS_ADDR(vreg), \
	146	.vsel_mask = vmask, \
	147	.enable_reg = HI655X_BUS_ADDR(ereg), \
	148	.enable_mask = BIT(cmask), \
	149	}, \
	150	.disable_reg = HI655X_BUS_ADDR(dreg), \
	151	.status_reg = HI655X_BUS_ADDR(sreg), \
4618119b CF	152	}
4618119b CF	153
784816d4	154	static const struct hi655x_regulator regulators[] = {
4618119b CF	155	HI655X_LDO_LINEAR(LDO2, 0x72, 0x07, 0x29, 0x2a, 0x2b, 0x01,
	156	2500000, 8, 100000),
	157	HI655X_LDO(LDO7, 0x78, 0x07, 0x29, 0x2a, 0x2b, 0x06, ldo7_voltages),
	158	HI655X_LDO(LDO10, 0x78, 0x07, 0x29, 0x2a, 0x2b, 0x01, ldo7_voltages),
	159	HI655X_LDO_LINEAR(LDO13, 0x7e, 0x07, 0x2c, 0x2d, 0x2e, 0x04,
	160	1600000, 8, 50000),
	161	HI655X_LDO_LINEAR(LDO14, 0x7f, 0x07, 0x2c, 0x2d, 0x2e, 0x05,
	162	2500000, 8, 100000),
	163	HI655X_LDO_LINEAR(LDO15, 0x80, 0x07, 0x2c, 0x2d, 0x2e, 0x06,
	164	1600000, 8, 50000),
	165	HI655X_LDO_LINEAR(LDO17, 0x82, 0x07, 0x2f, 0x30, 0x31, 0x00,
	166	2500000, 8, 100000),
	167	HI655X_LDO(LDO19, 0x84, 0x07, 0x2f, 0x30, 0x31, 0x02, ldo19_voltages),
	168	HI655X_LDO_LINEAR(LDO21, 0x86, 0x07, 0x2f, 0x30, 0x31, 0x04,
	169	1650000, 8, 50000),
	170	HI655X_LDO(LDO22, 0x87, 0x07, 0x2f, 0x30, 0x31, 0x05, ldo22_voltages),
	171	};
	172
	173	static int hi655x_regulator_probe(struct platform_device *pdev)
	174	{
	175	unsigned int i;
	176	struct hi655x_regulator *regulator;
	177	struct hi655x_pmic *pmic;
	178	struct regulator_config config = { };
	179	struct regulator_dev *rdev;
	180
	181	pmic = dev_get_drvdata(pdev->dev.parent);
	182	if (!pmic) {
	183	dev_err(&pdev->dev, "no pmic in the regulator parent node\n");
	184	return -ENODEV;
	185	}
	186
	187	regulator = devm_kzalloc(&pdev->dev, sizeof(*regulator), GFP_KERNEL);
	188	if (!regulator)
	189	return -ENOMEM;
	190
	191	platform_set_drvdata(pdev, regulator);
	192
	193	config.dev = pdev->dev.parent;
	194	config.regmap = pmic->regmap;
	195	config.driver_data = regulator;
	196	for (i = 0; i < ARRAY_SIZE(regulators); i++) {
	197	rdev = devm_regulator_register(&pdev->dev,
	198	&regulators[i].rdesc,
	199	&config);
	200	if (IS_ERR(rdev)) {
	201	dev_err(&pdev->dev, "failed to register regulator %s\n",
	202	regulator->rdesc.name);
	203	return PTR_ERR(rdev);
	204	}
	205	}
	206	return 0;
	207	}
	208
2f3c578f JL	209	static const struct platform_device_id hi655x_regulator_table[] = {
	210	{ .name = "hi655x-regulator" },
	211	{},
	212	};
	213	MODULE_DEVICE_TABLE(platform, hi655x_regulator_table);
	214
4618119b	215	static struct platform_driver hi655x_regulator_driver = {
2f3c578f	216	.id_table = hi655x_regulator_table,
4618119b CF	217	.driver = {
	218	.name = "hi655x-regulator",
	219	},
	220	.probe = hi655x_regulator_probe,
	221	};
	222	module_platform_driver(hi655x_regulator_driver);
	223
	224	MODULE_AUTHOR("Chen Feng <puck.chen@hisilicon.com>");
	225	MODULE_DESCRIPTION("Hisilicon Hi655x regulator driver");
	226	MODULE_LICENSE("GPL v2");