[linux-2.6-block.git] / drivers / regulator / rk808-regulator.c

/*
 * Regulator driver for Rockchip RK808
 *
 * Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd
 *
 * Author: Chris Zhong <zyw@rock-chips.com>
 * Author: Zhang Qing <zhangqing@rock-chips.com>
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 */

#include <linux/module.h>
#include <linux/init.h>
#include <linux/i2c.h>
#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/mfd/rk808.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/of_regulator.h>
#include <linux/regmap.h>
#include <linux/slab.h>
/*
 * Field Definitions.
 */
#define RK808_BUCK_VSEL_MASK	0x3f
#define RK808_BUCK4_VSEL_MASK	0xf
#define RK808_LDO_VSEL_MASK	0x1f

static const int buck_set_vol_base_addr[] = {
	RK808_BUCK1_ON_VSEL_REG,
	RK808_BUCK2_ON_VSEL_REG,
	RK808_BUCK3_CONFIG_REG,
	RK808_BUCK4_ON_VSEL_REG,
};

static const int buck_contr_base_addr[] = {
	RK808_BUCK1_CONFIG_REG,
	RK808_BUCK2_CONFIG_REG,
	RK808_BUCK3_CONFIG_REG,
	RK808_BUCK4_CONFIG_REG,
};

#define rk808_BUCK_SET_VOL_REG(x) (buck_set_vol_base_addr[x])
#define rk808_BUCK_CONTR_REG(x) (buck_contr_base_addr[x])
#define rk808_LDO_SET_VOL_REG(x) (ldo_set_vol_base_addr[x])

static const int ldo_set_vol_base_addr[] = {
	RK808_LDO1_ON_VSEL_REG,
	RK808_LDO2_ON_VSEL_REG,
	RK808_LDO3_ON_VSEL_REG,
	RK808_LDO4_ON_VSEL_REG,
	RK808_LDO5_ON_VSEL_REG,
	RK808_LDO6_ON_VSEL_REG,
	RK808_LDO7_ON_VSEL_REG,
	RK808_LDO8_ON_VSEL_REG,
};

/*
 * rk808 voltage number
 */
static const struct regulator_linear_range rk808_buck_voltage_ranges[] = {
	REGULATOR_LINEAR_RANGE(700000, 0, 63, 12500),
};

static const struct regulator_linear_range rk808_buck4_voltage_ranges[] = {
	REGULATOR_LINEAR_RANGE(1800000, 0, 15, 100000),
};

static const struct regulator_linear_range rk808_ldo_voltage_ranges[] = {
	REGULATOR_LINEAR_RANGE(1800000, 0, 16, 100000),
};

static const struct regulator_linear_range rk808_ldo3_voltage_ranges[] = {
	REGULATOR_LINEAR_RANGE(800000, 0, 13, 100000),
	REGULATOR_LINEAR_RANGE(2500000, 15, 15, 0),
};

static const struct regulator_linear_range rk808_ldo6_voltage_ranges[] = {
	REGULATOR_LINEAR_RANGE(800000, 0, 17, 100000),
};

static struct regulator_ops rk808_reg_ops = {
	.list_voltage		= regulator_list_voltage_linear_range,
	.map_voltage		= regulator_map_voltage_linear_range,
	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
	.enable			= regulator_enable_regmap,
	.disable		= regulator_disable_regmap,
	.is_enabled		= regulator_is_enabled_regmap,
};

static struct regulator_ops rk808_switch_ops = {
	.enable = regulator_enable_regmap,
	.disable = regulator_disable_regmap,
	.is_enabled = regulator_is_enabled_regmap,
};

static const struct regulator_desc rk808_reg[] = {
	{
		.name = "DCDC_REG1",
		.id = RK808_ID_DCDC1,
		.ops = &rk808_reg_ops,
		.type = REGULATOR_VOLTAGE,
		.n_voltages = 64,
		.linear_ranges = rk808_buck_voltage_ranges,
		.n_linear_ranges = ARRAY_SIZE(rk808_buck_voltage_ranges),
		.vsel_reg = RK808_BUCK1_ON_VSEL_REG,
		.vsel_mask = RK808_BUCK_VSEL_MASK,
		.enable_reg = RK808_DCDC_EN_REG,
		.enable_mask = BIT(0),
		.owner = THIS_MODULE,
	}, {
		.name = "DCDC_REG2",
		.id = RK808_ID_DCDC2,
		.ops = &rk808_reg_ops,
		.type = REGULATOR_VOLTAGE,
		.n_voltages = 64,
		.linear_ranges = rk808_buck_voltage_ranges,
		.n_linear_ranges = ARRAY_SIZE(rk808_buck_voltage_ranges),
		.vsel_reg = RK808_BUCK2_ON_VSEL_REG,
		.vsel_mask = RK808_BUCK_VSEL_MASK,
		.enable_reg = RK808_DCDC_EN_REG,
		.enable_mask = BIT(1),
		.owner = THIS_MODULE,
	}, {
		.name = "DCDC_REG3",
		.id = RK808_ID_DCDC3,
		.ops = &rk808_switch_ops,
		.type = REGULATOR_VOLTAGE,
		.n_voltages = 1,
		.enable_reg = RK808_DCDC_EN_REG,
		.enable_mask = BIT(2),
		.owner = THIS_MODULE,
	}, {
		.name = "DCDC_REG4",
		.id = RK808_ID_DCDC4,
		.ops = &rk808_reg_ops,
		.type = REGULATOR_VOLTAGE,
		.n_voltages = 17,
		.linear_ranges = rk808_buck4_voltage_ranges,
		.n_linear_ranges = ARRAY_SIZE(rk808_buck4_voltage_ranges),
		.vsel_reg = RK808_BUCK4_ON_VSEL_REG,
		.vsel_mask = RK808_BUCK4_VSEL_MASK,
		.enable_reg = RK808_DCDC_EN_REG,
		.enable_mask = BIT(3),
		.owner = THIS_MODULE,
	}, {
		.name = "LDO_REG1",
		.id = RK808_ID_LDO1,
		.ops = &rk808_reg_ops,
		.type = REGULATOR_VOLTAGE,
		.n_voltages = 17,
		.linear_ranges = rk808_ldo_voltage_ranges,
		.n_linear_ranges = ARRAY_SIZE(rk808_ldo_voltage_ranges),
		.vsel_reg = RK808_LDO1_ON_VSEL_REG,
		.vsel_mask = RK808_LDO_VSEL_MASK,
		.enable_reg = RK808_LDO_EN_REG,
		.enable_mask = BIT(0),
		.owner = THIS_MODULE,
	}, {
		.name = "LDO_REG2",
		.id = RK808_ID_LDO2,
		.ops = &rk808_reg_ops,
		.type = REGULATOR_VOLTAGE,
		.n_voltages = 17,
		.linear_ranges = rk808_ldo_voltage_ranges,
		.n_linear_ranges = ARRAY_SIZE(rk808_ldo_voltage_ranges),
		.vsel_reg = RK808_LDO2_ON_VSEL_REG,
		.vsel_mask = RK808_LDO_VSEL_MASK,
		.enable_reg = RK808_LDO_EN_REG,
		.enable_mask = BIT(1),
		.owner = THIS_MODULE,
	}, {
		.name = "LDO_REG3",
		.id = RK808_ID_LDO3,
		.ops = &rk808_reg_ops,
		.type = REGULATOR_VOLTAGE,
		.n_voltages = 16,
		.linear_ranges = rk808_ldo3_voltage_ranges,
		.n_linear_ranges = ARRAY_SIZE(rk808_ldo3_voltage_ranges),
		.vsel_reg = RK808_LDO3_ON_VSEL_REG,
		.vsel_mask = RK808_BUCK4_VSEL_MASK,
		.enable_reg = RK808_LDO_EN_REG,
		.enable_mask = BIT(2),
		.owner = THIS_MODULE,
	}, {
		.name = "LDO_REG4",
		.id = RK808_ID_LDO4,
		.ops = &rk808_reg_ops,
		.type = REGULATOR_VOLTAGE,
		.n_voltages = 17,
		.linear_ranges = rk808_ldo_voltage_ranges,
		.n_linear_ranges = ARRAY_SIZE(rk808_ldo_voltage_ranges),
		.vsel_reg = RK808_LDO4_ON_VSEL_REG,
		.vsel_mask = RK808_LDO_VSEL_MASK,
		.enable_reg = RK808_LDO_EN_REG,
		.enable_mask = BIT(3),
		.owner = THIS_MODULE,
	}, {
		.name = "LDO_REG5",
		.id = RK808_ID_LDO5,
		.ops = &rk808_reg_ops,
		.type = REGULATOR_VOLTAGE,
		.n_voltages = 17,
		.linear_ranges = rk808_ldo_voltage_ranges,
		.n_linear_ranges = ARRAY_SIZE(rk808_ldo_voltage_ranges),
		.vsel_reg = RK808_LDO5_ON_VSEL_REG,
		.vsel_mask = RK808_LDO_VSEL_MASK,
		.enable_reg = RK808_LDO_EN_REG,
		.enable_mask = BIT(4),
		.owner = THIS_MODULE,
	}, {
		.name = "LDO_REG6",
		.id = RK808_ID_LDO6,
		.ops = &rk808_reg_ops,
		.type = REGULATOR_VOLTAGE,
		.n_voltages = 18,
		.linear_ranges = rk808_ldo6_voltage_ranges,
		.n_linear_ranges = ARRAY_SIZE(rk808_ldo6_voltage_ranges),
		.vsel_reg = RK808_LDO6_ON_VSEL_REG,
		.vsel_mask = RK808_LDO_VSEL_MASK,
		.enable_reg = RK808_LDO_EN_REG,
		.enable_mask = BIT(5),
		.owner = THIS_MODULE,
	}, {
		.name = "LDO_REG7",
		.id = RK808_ID_LDO7,
		.ops = &rk808_reg_ops,
		.type = REGULATOR_VOLTAGE,
		.n_voltages = 18,
		.linear_ranges = rk808_ldo6_voltage_ranges,
		.n_linear_ranges = ARRAY_SIZE(rk808_ldo6_voltage_ranges),
		.vsel_reg = RK808_LDO7_ON_VSEL_REG,
		.vsel_mask = RK808_LDO_VSEL_MASK,
		.enable_reg = RK808_LDO_EN_REG,
		.enable_mask = BIT(6),
		.owner = THIS_MODULE,
	}, {
		.name = "LDO_REG8",
		.id = RK808_ID_LDO8,
		.ops = &rk808_reg_ops,
		.type = REGULATOR_VOLTAGE,
		.n_voltages = 17,
		.linear_ranges = rk808_ldo_voltage_ranges,
		.n_linear_ranges = ARRAY_SIZE(rk808_ldo_voltage_ranges),
		.vsel_reg = RK808_LDO8_ON_VSEL_REG,
		.vsel_mask = RK808_LDO_VSEL_MASK,
		.enable_reg = RK808_LDO_EN_REG,
		.enable_mask = BIT(7),
		.owner = THIS_MODULE,
	}, {
		.name = "SWITCH_REG1",
		.id = RK808_ID_SWITCH1,
		.ops = &rk808_switch_ops,
		.type = REGULATOR_VOLTAGE,
		.enable_reg = RK808_DCDC_EN_REG,
		.enable_mask = BIT(5),
		.owner = THIS_MODULE,
	}, {
		.name = "SWITCH_REG2",
		.id = RK808_ID_SWITCH2,
		.ops = &rk808_switch_ops,
		.type = REGULATOR_VOLTAGE,
		.enable_reg = RK808_DCDC_EN_REG,
		.enable_mask = BIT(6),
		.owner = THIS_MODULE,
	},
};

static struct of_regulator_match rk808_reg_matches[] = {
	[RK808_ID_DCDC1]	= { .name = "DCDC_REG1" },
	[RK808_ID_DCDC2]	= { .name = "DCDC_REG2" },
	[RK808_ID_DCDC3]	= { .name = "DCDC_REG3" },
	[RK808_ID_DCDC4]	= { .name = "DCDC_REG4" },
	[RK808_ID_LDO1]		= { .name = "LDO_REG1" },
	[RK808_ID_LDO2]		= { .name = "LDO_REG2" },
	[RK808_ID_LDO3]		= { .name = "LDO_REG3" },
	[RK808_ID_LDO4]		= { .name = "LDO_REG4" },
	[RK808_ID_LDO5]		= { .name = "LDO_REG5" },
	[RK808_ID_LDO6]		= { .name = "LDO_REG6" },
	[RK808_ID_LDO7]		= { .name = "LDO_REG7" },
	[RK808_ID_LDO8]		= { .name = "LDO_REG8" },
	[RK808_ID_SWITCH1]	= { .name = "SWITCH_REG1" },
	[RK808_ID_SWITCH2]	= { .name = "SWITCH_REG2" },
};

static int rk808_regulator_dts(struct rk808 *rk808)
{
	struct device_node *np, *reg_np;
	struct i2c_client *client = rk808->i2c;
	struct rk808_board *pdata = rk808->pdata;
	int i, ret;

	np = client->dev.of_node;
	if (!np) {
		dev_err(&client->dev, "could not find pmic sub-node\n");
		return -ENXIO;
	}

	reg_np = of_get_child_by_name(np, "regulators");
	if (!reg_np)
		return -ENXIO;

	ret = of_regulator_match(&client->dev, reg_np, rk808_reg_matches,
				 RK808_NUM_REGULATORS);
	if (ret < 0) {
		dev_err(&client->dev,
			"failed to parse regulator data: %d\n", ret);
		return ret;
	}

	for (i = 0; i < RK808_NUM_REGULATORS; i++) {
		if (!rk808_reg_matches[i].init_data ||
		    !rk808_reg_matches[i].of_node)
			continue;

		pdata->rk808_init_data[i] = rk808_reg_matches[i].init_data;
		pdata->of_node[i] = rk808_reg_matches[i].of_node;
	}

	return 0;
}

static int rk808_regulator_probe(struct platform_device *pdev)
{
	struct rk808 *rk808 = dev_get_drvdata(pdev->dev.parent);
	struct i2c_client *client = rk808->i2c;
	struct rk808_board *pdata = rk808->pdata;
	struct regulator_config config = {};
	struct regulator_dev *rk808_rdev;
	struct regulator_init_data *reg_data;
	int i = 0;
	int ret = 0;

	if (!pdata) {
		dev_warn(&client->dev, "%s no pdata, create it\n", __func__);
		pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL);
		if (!pdata)
			return -ENOMEM;
	}

	ret = rk808_regulator_dts(rk808);
	if (ret)
		return ret;

	rk808->num_regulators = RK808_NUM_REGULATORS;
	rk808->rdev = devm_kzalloc(&pdev->dev, RK808_NUM_REGULATORS *
				   sizeof(struct regulator_dev *), GFP_KERNEL);
	if (!rk808->rdev)
		return -ENOMEM;

	/* Instantiate the regulators */
	for (i = 0; i < RK808_NUM_REGULATORS; i++) {
		reg_data = pdata->rk808_init_data[i];
		if (!reg_data)
			continue;

		config.dev = &client->dev;
		config.driver_data = rk808;
		config.regmap = rk808->regmap;

		if (client->dev.of_node)
			config.of_node = pdata->of_node[i];

		reg_data->supply_regulator = rk808_reg[i].name;
		config.init_data = reg_data;

		rk808_rdev = devm_regulator_register(&pdev->dev,
						     &rk808_reg[i], &config);
		if (IS_ERR(rk808_rdev)) {
			dev_err(&client->dev,
				"failed to register %d regulator\n", i);
			return PTR_ERR(rk808_rdev);
		}
		rk808->rdev[i] = rk808_rdev;
	}
	return 0;
}

static struct platform_driver rk808_regulator_driver = {
	.probe = rk808_regulator_probe,
	.driver = {
		.name = "rk808-regulator",
		.owner = THIS_MODULE,
	},
};

module_platform_driver(rk808_regulator_driver);

MODULE_DESCRIPTION("regulator driver for the rk808 series PMICs");
MODULE_AUTHOR("Chris Zhong<zyw@rock-chips.com>");
MODULE_AUTHOR("Zhang Qing<zhanqging@rock-chips.com>");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:rk808-regulator");
Commit	Line	Data
2cd64ae3 CZ	1	/*
	2	* Regulator driver for Rockchip RK808
	3	*
	4	* Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd
	5	*
	6	* Author: Chris Zhong <zyw@rock-chips.com>
	7	* Author: Zhang Qing <zhangqing@rock-chips.com>
	8	*
	9	* This program is free software; you can redistribute it and/or modify it
	10	* under the terms and conditions of the GNU General Public License,
	11	* version 2, as published by the Free Software Foundation.
	12	*
	13	* This program is distributed in the hope it will be useful, but WITHOUT
	14	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	15	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	16	* more details.
	17	*
	18	*/
	19
	20	#include <linux/module.h>
	21	#include <linux/init.h>
	22	#include <linux/i2c.h>
	23	#include <linux/err.h>
	24	#include <linux/platform_device.h>
	25	#include <linux/mfd/rk808.h>
	26	#include <linux/of.h>
	27	#include <linux/of_device.h>
	28	#include <linux/regulator/driver.h>
	29	#include <linux/regulator/of_regulator.h>
	30	#include <linux/regmap.h>
	31	#include <linux/slab.h>
	32	/*
	33	* Field Definitions.
	34	*/
	35	#define RK808_BUCK_VSEL_MASK 0x3f
	36	#define RK808_BUCK4_VSEL_MASK 0xf
	37	#define RK808_LDO_VSEL_MASK 0x1f
	38
	39	static const int buck_set_vol_base_addr[] = {
	40	RK808_BUCK1_ON_VSEL_REG,
	41	RK808_BUCK2_ON_VSEL_REG,
	42	RK808_BUCK3_CONFIG_REG,
	43	RK808_BUCK4_ON_VSEL_REG,
	44	};
	45
	46	static const int buck_contr_base_addr[] = {
	47	RK808_BUCK1_CONFIG_REG,
	48	RK808_BUCK2_CONFIG_REG,
	49	RK808_BUCK3_CONFIG_REG,
	50	RK808_BUCK4_CONFIG_REG,
	51	};
	52
	53	#define rk808_BUCK_SET_VOL_REG(x) (buck_set_vol_base_addr[x])
	54	#define rk808_BUCK_CONTR_REG(x) (buck_contr_base_addr[x])
	55	#define rk808_LDO_SET_VOL_REG(x) (ldo_set_vol_base_addr[x])
	56
	57	static const int ldo_set_vol_base_addr[] = {
	58	RK808_LDO1_ON_VSEL_REG,
	59	RK808_LDO2_ON_VSEL_REG,
	60	RK808_LDO3_ON_VSEL_REG,
	61	RK808_LDO4_ON_VSEL_REG,
	62	RK808_LDO5_ON_VSEL_REG,
	63	RK808_LDO6_ON_VSEL_REG,
	64	RK808_LDO7_ON_VSEL_REG,
65	RK808_LDO8_ON_VSEL_REG,
66	};
67
68	/*
69	* rk808 voltage number
70	*/
71	static const struct regulator_linear_range rk808_buck_voltage_ranges[] = {
72	REGULATOR_LINEAR_RANGE(700000, 0, 63, 12500),
73	};
74
75	static const struct regulator_linear_range rk808_buck4_voltage_ranges[] = {
76	REGULATOR_LINEAR_RANGE(1800000, 0, 15, 100000),
77	};
78
79	static const struct regulator_linear_range rk808_ldo_voltage_ranges[] = {
80	REGULATOR_LINEAR_RANGE(1800000, 0, 16, 100000),
81	};
82
83	static const struct regulator_linear_range rk808_ldo3_voltage_ranges[] = {
84	REGULATOR_LINEAR_RANGE(800000, 0, 13, 100000),
85	REGULATOR_LINEAR_RANGE(2500000, 15, 15, 0),
86	};
87
88	static const struct regulator_linear_range rk808_ldo6_voltage_ranges[] = {
89	REGULATOR_LINEAR_RANGE(800000, 0, 17, 100000),
90	};
91
92	static struct regulator_ops rk808_reg_ops = {
93	.list_voltage = regulator_list_voltage_linear_range,
94	.map_voltage = regulator_map_voltage_linear_range,
95	.get_voltage_sel = regulator_get_voltage_sel_regmap,
96	.set_voltage_sel = regulator_set_voltage_sel_regmap,
97	.enable = regulator_enable_regmap,
98	.disable = regulator_disable_regmap,
99	.is_enabled = regulator_is_enabled_regmap,
100	};
101
102	static struct regulator_ops rk808_switch_ops = {
103	.enable = regulator_enable_regmap,
104	.disable = regulator_disable_regmap,
105	.is_enabled = regulator_is_enabled_regmap,
106	};
107
108	static const struct regulator_desc rk808_reg[] = {
109	{
110	.name = "DCDC_REG1",
111	.id = RK808_ID_DCDC1,
112	.ops = &rk808_reg_ops,
113	.type = REGULATOR_VOLTAGE,
114	.n_voltages = 64,
115	.linear_ranges = rk808_buck_voltage_ranges,
116	.n_linear_ranges = ARRAY_SIZE(rk808_buck_voltage_ranges),
117	.vsel_reg = RK808_BUCK1_ON_VSEL_REG,
118	.vsel_mask = RK808_BUCK_VSEL_MASK,
119	.enable_reg = RK808_DCDC_EN_REG,
120	.enable_mask = BIT(0),
121	.owner = THIS_MODULE,
122	}, {
123	.name = "DCDC_REG2",
124	.id = RK808_ID_DCDC2,
125	.ops = &rk808_reg_ops,
126	.type = REGULATOR_VOLTAGE,
127	.n_voltages = 64,
128	.linear_ranges = rk808_buck_voltage_ranges,
129	.n_linear_ranges = ARRAY_SIZE(rk808_buck_voltage_ranges),
130	.vsel_reg = RK808_BUCK2_ON_VSEL_REG,
131	.vsel_mask = RK808_BUCK_VSEL_MASK,
132	.enable_reg = RK808_DCDC_EN_REG,
133	.enable_mask = BIT(1),
134	.owner = THIS_MODULE,
135	}, {
136	.name = "DCDC_REG3",
137	.id = RK808_ID_DCDC3,
138	.ops = &rk808_switch_ops,
139	.type = REGULATOR_VOLTAGE,
140	.n_voltages = 1,
141	.enable_reg = RK808_DCDC_EN_REG,
142	.enable_mask = BIT(2),
143	.owner = THIS_MODULE,
144	}, {
145	.name = "DCDC_REG4",
146	.id = RK808_ID_DCDC4,
147	.ops = &rk808_reg_ops,
148	.type = REGULATOR_VOLTAGE,
149	.n_voltages = 17,
150	.linear_ranges = rk808_buck4_voltage_ranges,
151	.n_linear_ranges = ARRAY_SIZE(rk808_buck4_voltage_ranges),
152	.vsel_reg = RK808_BUCK4_ON_VSEL_REG,
153	.vsel_mask = RK808_BUCK4_VSEL_MASK,
154	.enable_reg = RK808_DCDC_EN_REG,
155	.enable_mask = BIT(3),
156	.owner = THIS_MODULE,
157	}, {
158	.name = "LDO_REG1",
159	.id = RK808_ID_LDO1,
160	.ops = &rk808_reg_ops,
161	.type = REGULATOR_VOLTAGE,
162	.n_voltages = 17,
163	.linear_ranges = rk808_ldo_voltage_ranges,
164	.n_linear_ranges = ARRAY_SIZE(rk808_ldo_voltage_ranges),
165	.vsel_reg = RK808_LDO1_ON_VSEL_REG,
166	.vsel_mask = RK808_LDO_VSEL_MASK,
167	.enable_reg = RK808_LDO_EN_REG,
168	.enable_mask = BIT(0),
169	.owner = THIS_MODULE,
170	}, {
171	.name = "LDO_REG2",
172	.id = RK808_ID_LDO2,
173	.ops = &rk808_reg_ops,
174	.type = REGULATOR_VOLTAGE,
175	.n_voltages = 17,
176	.linear_ranges = rk808_ldo_voltage_ranges,
177	.n_linear_ranges = ARRAY_SIZE(rk808_ldo_voltage_ranges),
178	.vsel_reg = RK808_LDO2_ON_VSEL_REG,
179	.vsel_mask = RK808_LDO_VSEL_MASK,
180	.enable_reg = RK808_LDO_EN_REG,
181	.enable_mask = BIT(1),
182	.owner = THIS_MODULE,
183	}, {
184	.name = "LDO_REG3",
185	.id = RK808_ID_LDO3,
186	.ops = &rk808_reg_ops,
187	.type = REGULATOR_VOLTAGE,
188	.n_voltages = 16,
189	.linear_ranges = rk808_ldo3_voltage_ranges,
190	.n_linear_ranges = ARRAY_SIZE(rk808_ldo3_voltage_ranges),
191	.vsel_reg = RK808_LDO3_ON_VSEL_REG,
192	.vsel_mask = RK808_BUCK4_VSEL_MASK,
193	.enable_reg = RK808_LDO_EN_REG,
194	.enable_mask = BIT(2),
195	.owner = THIS_MODULE,
196	}, {
197	.name = "LDO_REG4",
198	.id = RK808_ID_LDO4,
199	.ops = &rk808_reg_ops,
200	.type = REGULATOR_VOLTAGE,
201	.n_voltages = 17,
202	.linear_ranges = rk808_ldo_voltage_ranges,
203	.n_linear_ranges = ARRAY_SIZE(rk808_ldo_voltage_ranges),
204	.vsel_reg = RK808_LDO4_ON_VSEL_REG,
205	.vsel_mask = RK808_LDO_VSEL_MASK,
206	.enable_reg = RK808_LDO_EN_REG,
207	.enable_mask = BIT(3),
208	.owner = THIS_MODULE,
209	}, {
210	.name = "LDO_REG5",
211	.id = RK808_ID_LDO5,
212	.ops = &rk808_reg_ops,
213	.type = REGULATOR_VOLTAGE,
214	.n_voltages = 17,
215	.linear_ranges = rk808_ldo_voltage_ranges,
216	.n_linear_ranges = ARRAY_SIZE(rk808_ldo_voltage_ranges),
217	.vsel_reg = RK808_LDO5_ON_VSEL_REG,
218	.vsel_mask = RK808_LDO_VSEL_MASK,
219	.enable_reg = RK808_LDO_EN_REG,
220	.enable_mask = BIT(4),
221	.owner = THIS_MODULE,
222	}, {
223	.name = "LDO_REG6",
224	.id = RK808_ID_LDO6,
225	.ops = &rk808_reg_ops,
226	.type = REGULATOR_VOLTAGE,
227	.n_voltages = 18,
228	.linear_ranges = rk808_ldo6_voltage_ranges,
229	.n_linear_ranges = ARRAY_SIZE(rk808_ldo6_voltage_ranges),
230	.vsel_reg = RK808_LDO6_ON_VSEL_REG,
231	.vsel_mask = RK808_LDO_VSEL_MASK,
232	.enable_reg = RK808_LDO_EN_REG,
233	.enable_mask = BIT(5),
234	.owner = THIS_MODULE,
235	}, {
236	.name = "LDO_REG7",
237	.id = RK808_ID_LDO7,
238	.ops = &rk808_reg_ops,
239	.type = REGULATOR_VOLTAGE,
240	.n_voltages = 18,
241	.linear_ranges = rk808_ldo6_voltage_ranges,
242	.n_linear_ranges = ARRAY_SIZE(rk808_ldo6_voltage_ranges),
243	.vsel_reg = RK808_LDO7_ON_VSEL_REG,
244	.vsel_mask = RK808_LDO_VSEL_MASK,
245	.enable_reg = RK808_LDO_EN_REG,
246	.enable_mask = BIT(6),
247	.owner = THIS_MODULE,
248	}, {
249	.name = "LDO_REG8",
250	.id = RK808_ID_LDO8,
251	.ops = &rk808_reg_ops,
252	.type = REGULATOR_VOLTAGE,
253	.n_voltages = 17,
254	.linear_ranges = rk808_ldo_voltage_ranges,
255	.n_linear_ranges = ARRAY_SIZE(rk808_ldo_voltage_ranges),
256	.vsel_reg = RK808_LDO8_ON_VSEL_REG,
257	.vsel_mask = RK808_LDO_VSEL_MASK,
258	.enable_reg = RK808_LDO_EN_REG,
259	.enable_mask = BIT(7),
260	.owner = THIS_MODULE,
261	}, {
262	.name = "SWITCH_REG1",
263	.id = RK808_ID_SWITCH1,
264	.ops = &rk808_switch_ops,
265	.type = REGULATOR_VOLTAGE,
266	.enable_reg = RK808_DCDC_EN_REG,
267	.enable_mask = BIT(5),
268	.owner = THIS_MODULE,
269	}, {
270	.name = "SWITCH_REG2",
271	.id = RK808_ID_SWITCH2,
272	.ops = &rk808_switch_ops,
273	.type = REGULATOR_VOLTAGE,
274	.enable_reg = RK808_DCDC_EN_REG,
275	.enable_mask = BIT(6),
276	.owner = THIS_MODULE,
277	},
278	};
279
280	static struct of_regulator_match rk808_reg_matches[] = {
281	[RK808_ID_DCDC1] = { .name = "DCDC_REG1" },
282	[RK808_ID_DCDC2] = { .name = "DCDC_REG2" },
283	[RK808_ID_DCDC3] = { .name = "DCDC_REG3" },
284	[RK808_ID_DCDC4] = { .name = "DCDC_REG4" },
285	[RK808_ID_LDO1] = { .name = "LDO_REG1" },
286	[RK808_ID_LDO2] = { .name = "LDO_REG2" },
287	[RK808_ID_LDO3] = { .name = "LDO_REG3" },
288	[RK808_ID_LDO4] = { .name = "LDO_REG4" },
289	[RK808_ID_LDO5] = { .name = "LDO_REG5" },
290	[RK808_ID_LDO6] = { .name = "LDO_REG6" },
291	[RK808_ID_LDO7] = { .name = "LDO_REG7" },
292	[RK808_ID_LDO8] = { .name = "LDO_REG8" },
293	[RK808_ID_SWITCH1] = { .name = "SWITCH_REG1" },
294	[RK808_ID_SWITCH2] = { .name = "SWITCH_REG2" },
295	};
296
297	static int rk808_regulator_dts(struct rk808 *rk808)
298	{
2cd64ae3	299	struct device_node np, reg_np;
d76c333e CZ	300	struct i2c_client *client = rk808->i2c;
d76c333e CZ	301	struct rk808_board *pdata = rk808->pdata;
2cd64ae3 CZ	302	int i, ret;
2cd64ae3 CZ	303
d76c333e	304	np = client->dev.of_node;
2cd64ae3	305	if (!np) {
d76c333e	306	dev_err(&client->dev, "could not find pmic sub-node\n");
2cd64ae3 CZ	307	return -ENXIO;
	308	}
	309
	310	reg_np = of_get_child_by_name(np, "regulators");
	311	if (!reg_np)
	312	return -ENXIO;
	313
d76c333e	314	ret = of_regulator_match(&client->dev, reg_np, rk808_reg_matches,
2cd64ae3	315	RK808_NUM_REGULATORS);
d76c333e CZ	316	if (ret < 0) {
d76c333e CZ	317	dev_err(&client->dev,
2cd64ae3 CZ	318	"failed to parse regulator data: %d\n", ret);
	319	return ret;
	320	}
	321
	322	for (i = 0; i < RK808_NUM_REGULATORS; i++) {
	323	if (!rk808_reg_matches[i].init_data \|\|
	324	!rk808_reg_matches[i].of_node)
	325	continue;
	326
	327	pdata->rk808_init_data[i] = rk808_reg_matches[i].init_data;
	328	pdata->of_node[i] = rk808_reg_matches[i].of_node;
	329	}
	330
	331	return 0;
	332	}
	333
	334	static int rk808_regulator_probe(struct platform_device *pdev)
	335	{
	336	struct rk808 *rk808 = dev_get_drvdata(pdev->dev.parent);
d76c333e CZ	337	struct i2c_client *client = rk808->i2c;
d76c333e CZ	338	struct rk808_board *pdata = rk808->pdata;
462004f1	339	struct regulator_config config = {};
2cd64ae3 CZ	340	struct regulator_dev *rk808_rdev;
	341	struct regulator_init_data *reg_data;
	342	int i = 0;
	343	int ret = 0;
	344
2cd64ae3	345	if (!pdata) {
d76c333e CZ	346	dev_warn(&client->dev, "%s no pdata, create it\n", __func__);
d76c333e CZ	347	pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL);
2cd64ae3 CZ	348	if (!pdata)
	349	return -ENOMEM;
	350	}
	351
	352	ret = rk808_regulator_dts(rk808);
	353	if (ret)
	354	return ret;
	355
	356	rk808->num_regulators = RK808_NUM_REGULATORS;
	357	rk808->rdev = devm_kzalloc(&pdev->dev, RK808_NUM_REGULATORS *
	358	sizeof(struct regulator_dev *), GFP_KERNEL);
	359	if (!rk808->rdev)
	360	return -ENOMEM;
	361
	362	/* Instantiate the regulators */
	363	for (i = 0; i < RK808_NUM_REGULATORS; i++) {
	364	reg_data = pdata->rk808_init_data[i];
	365	if (!reg_data)
	366	continue;
	367
d76c333e	368	config.dev = &client->dev;
2cd64ae3 CZ	369	config.driver_data = rk808;
	370	config.regmap = rk808->regmap;
	371
d76c333e	372	if (client->dev.of_node)
2cd64ae3 CZ	373	config.of_node = pdata->of_node[i];
	374
	375	reg_data->supply_regulator = rk808_reg[i].name;
	376	config.init_data = reg_data;
	377
	378	rk808_rdev = devm_regulator_register(&pdev->dev,
	379	&rk808_reg[i], &config);
	380	if (IS_ERR(rk808_rdev)) {
d76c333e	381	dev_err(&client->dev,
2cd64ae3 CZ	382	"failed to register %d regulator\n", i);
	383	return PTR_ERR(rk808_rdev);
	384	}
	385	rk808->rdev[i] = rk808_rdev;
	386	}
	387	return 0;
	388	}
	389
	390	static struct platform_driver rk808_regulator_driver = {
	391	.probe = rk808_regulator_probe,
	392	.driver = {
	393	.name = "rk808-regulator",
	394	.owner = THIS_MODULE,
	395	},
	396	};
	397
	398	module_platform_driver(rk808_regulator_driver);
	399
	400	MODULE_DESCRIPTION("regulator driver for the rk808 series PMICs");
	401	MODULE_AUTHOR("Chris Zhong<zyw@rock-chips.com>");
	402	MODULE_AUTHOR("Zhang Qing<zhanqging@rock-chips.com>");
	403	MODULE_LICENSE("GPL");
	404	MODULE_ALIAS("platform:rk808-regulator");