drivers/regulator/rk808-regulator.c - kernel/msm-4.9 - Gitiles

 /*
  * 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 rk808_board *pdata = rk808->pdata;
 	struct device_node *np, *reg_np;
 	int i, ret;

 	np = rk808->dev->of_node;
 	if (!np) {
 		dev_err(rk808->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(rk808->dev, reg_np, rk808_reg_matches,
 				 RK808_NUM_REGULATORS);
 	if (ret  < 0) {
 		dev_err(rk808->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 rk808_board *pdata;
 	struct regulator_config config;
 	struct regulator_dev *rk808_rdev;
 	struct regulator_init_data *reg_data;
 	int i = 0;
 	int ret = 0;

 	dev_dbg(rk808->dev, "%s\n", __func__);

 	if (!rk808) {
 		dev_err(rk808->dev, "%s no rk808\n", __func__);
 		return -ENODEV;
 	}

 	pdata = rk808->pdata;
 	if (!pdata) {
 		dev_warn(rk808->dev, "%s no pdata, create it\n", __func__);
 		pdata = devm_kzalloc(rk808->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 = rk808->dev;
 		config.driver_data = rk808;
 		config.regmap = rk808->regmap;

 		if (rk808->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(rk808->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");
	/*
	* 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 rk808_board *pdata = rk808->pdata;
	struct device_node np, reg_np;
	int i, ret;

	np = rk808->dev->of_node;
	if (!np) {
	dev_err(rk808->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(rk808->dev, reg_np, rk808_reg_matches,
	RK808_NUM_REGULATORS);
	if (ret < 0) {
	dev_err(rk808->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 rk808_board *pdata;
	struct regulator_config config;
	struct regulator_dev *rk808_rdev;
	struct regulator_init_data *reg_data;
	int i = 0;
	int ret = 0;

	dev_dbg(rk808->dev, "%s\n", __func__);

	if (!rk808) {
	dev_err(rk808->dev, "%s no rk808\n", __func__);
	return -ENODEV;
	}

	pdata = rk808->pdata;
	if (!pdata) {
	dev_warn(rk808->dev, "%s no pdata, create it\n", __func__);
	pdata = devm_kzalloc(rk808->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 = rk808->dev;
	config.driver_data = rk808;
	config.regmap = rk808->regmap;

	if (rk808->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(rk808->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");