2014-08-19 21:36:42 -06:00
|
|
|
/*
|
|
|
|
* 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;
|
2014-08-21 18:54:55 -06:00
|
|
|
struct regulator_config config = {};
|
2014-08-19 21:36:42 -06:00
|
|
|
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");
|