// SPDX-License-Identifier: GPL-2.0-only
// Copyright (C) 2019 ROHM Semiconductors
// bd71828-regulator.c ROHM BD71828GW-DS1 regulator driver
//
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/mfd/rohm-bd71828.h>
#include <linux/module.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>
struct reg_init {
unsigned int reg;
unsigned int mask;
unsigned int val;
};
struct bd71828_regulator_data {
struct regulator_desc desc;
const struct rohm_dvs_config dvs;
const struct reg_init *reg_inits;
int reg_init_amnt;
};
static const struct reg_init buck1_inits[] = {
/*
* DVS Buck voltages can be changed by register values or via GPIO.
* Use register accesses by default.
*/
{
.reg = BD71828_REG_PS_CTRL_1,
.mask = BD71828_MASK_DVS_BUCK1_CTRL,
.val = BD71828_DVS_BUCK1_CTRL_I2C,
},
};
static const struct reg_init buck2_inits[] = {
{
.reg = BD71828_REG_PS_CTRL_1,
.mask = BD71828_MASK_DVS_BUCK2_CTRL,
.val = BD71828_DVS_BUCK2_CTRL_I2C,
},
};
static const struct reg_init buck6_inits[] = {
{
.reg = BD71828_REG_PS_CTRL_1,
.mask = BD71828_MASK_DVS_BUCK6_CTRL,
.val = BD71828_DVS_BUCK6_CTRL_I2C,
},
};
static const struct reg_init buck7_inits[] = {
{
.reg = BD71828_REG_PS_CTRL_1,
.mask = BD71828_MASK_DVS_BUCK7_CTRL,
.val = BD71828_DVS_BUCK7_CTRL_I2C,
},
};
static const struct linear_range bd71828_buck1267_volts[] = {
REGULATOR_LINEAR_RANGE(500000, 0x00, 0xef, 6250),
REGULATOR_LINEAR_RANGE(2000000, 0xf0, 0xff, 0),
};
static const struct linear_range bd71828_buck3_volts[] = {
REGULATOR_LINEAR_RANGE(1200000, 0x00, 0x0f, 50000),
REGULATOR_LINEAR_RANGE(2000000, 0x10, 0x1f, 0),
};
static const struct linear_range bd71828_buck4_volts[] = {
REGULATOR_LINEAR_RANGE(1000000, 0x00, 0x1f, 25000),
REGULATOR_LINEAR_RANGE(1800000, 0x20, 0x3f, 0),
};
static const struct linear_range bd71828_buck5_volts[] = {
REGULATOR_LINEAR_RANGE(2500000, 0x00, 0x0f, 50000),
REGULATOR_LINEAR_RANGE(3300000, 0x10, 0x1f, 0),
};
static const struct linear_range bd71828_ldo_volts[] = {
REGULATOR_LINEAR_RANGE(800000, 0x00, 0x31, 50000),
REGULATOR_LINEAR_RANGE(3300000, 0x32, 0x3f, 0),
};
static const unsigned int bd71828_ramp_delay[] = { 2500, 5000, 10000, 20000 };
static int buck_set_hw_dvs_levels(struct device_node *np,
const struct regulator_desc *desc,
struct regulator_config *cfg)
{
struct bd71828_regulator_data *data;
data = container_of(desc, struct bd71828_regulator_data, desc);
return rohm_regulator_set_dvs_levels(&data->dvs, np, desc, cfg->regmap);
}
static int ldo6_parse_dt(struct device_node *np,
const struct regulator_desc *desc,
struct regulator_config *cfg)
{
int ret, i;
uint32_t uv = 0;
unsigned int en;
struct regmap *regmap = cfg->regmap;
static const char * const props[] = { "rohm,dvs-run-voltage",
"rohm,dvs-idle-voltage",
"rohm,dvs-suspend-voltage",
"rohm,dvs-lpsr-voltage" };
unsigned int mask[] = { BD71828_MASK_RUN_EN, BD71828_MASK_IDLE_EN,
BD71828_MASK_SUSP_EN, BD71828_MASK_LPSR_EN };
for (i = 0; i < ARRAY_SIZE(props); i++) {
ret = of_property_read_u32(np, props[i], &uv);
if (ret) {
if (ret != -EINVAL)
return ret;
continue;
}
if (uv)
en = 0xffffffff;
else
en = 0;
ret = regmap_update_bits(regmap, desc->enable_reg, mask[i], en);
if (ret)
return ret;
}
return 0;
}
static const struct regulator_ops bd71828_buck_ops = {
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
.list_voltage = regulator_list_voltage_linear_range,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
};
static const struct regulator_ops bd71828_dvs_buck_ops = {
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
.list_voltage = regulator_list_voltage_linear_range,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.set_voltage_time_sel = regulator_set_voltage_time_sel,
.set_ramp_delay = regulator_set_ramp_delay_regmap,
};
static const struct regulator_ops bd71828_ldo_ops = {
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
.list_voltage = regulator_list_voltage_linear_range,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
};
static const struct regulator_ops bd71828_ldo6_ops = {
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
};
static const struct bd71828_regulator_data bd71828_rdata[] = {
{
.desc = {
.name = "buck1",
.of_match = of_match_ptr("BUCK1"),
.regulators_node = of_match_ptr("regulators"),
.id = BD71828_BUCK1,
.ops = &bd71828_dvs_buck_ops,
.type = REGULATOR_VOLTAGE,
.linear_ranges = bd71828_buck1267_volts,
.n_linear_ranges = ARRAY_SIZE(bd71828_buck1267_volts),
.n_voltages = BD71828_BUCK1267_VOLTS,
.enable_reg = BD71828_REG_BUCK1_EN,
.enable_mask = BD71828_MASK_RUN_EN,
.vsel_reg = BD71828_REG_BUCK1_VOLT,
.vsel_mask = BD71828_MASK_BUCK1267_VOLT,
.ramp_delay_table = bd71828_ramp_delay,
.n_ramp_values = ARRAY_SIZE(bd71828_ramp_delay),
.ramp_reg = BD71828_REG_BUCK1_MODE,
.ramp_mask = BD71828_MASK_RAMP_DELAY,
.owner = THIS_MODULE,
.of_parse_cb = buck_set_hw_dvs_levels,
},
.dvs = {
.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
ROHM_DVS_LEVEL_SUSPEND |
ROHM_DVS_LEVEL_LPSR,
.run_reg = BD71828_REG_BUCK1_VOLT,
.run_mask = BD71828_MASK_BUCK1267_VOLT,
.idle_reg = BD71828_REG_BUCK1_IDLE_VOLT,
.idle_mask = BD71828_MASK_BUCK1267_VOLT,
.idle_on_mask = BD71828_MASK_IDLE_EN,
.suspend_reg = BD71828_REG_BUCK1_SUSP_VOLT,
.suspend_mask = BD71828_MASK_BUCK1267_VOLT,
.suspend_on_mask = BD71828_MASK_SUSP_EN,
/*
* LPSR voltage is same as SUSPEND voltage. Allow
* only enabling/disabling regulator for LPSR state
*/
.lpsr_on_mask = BD71828_MASK_LPSR_EN,
},
.reg_inits = buck1_inits,
.reg_init_amnt = ARRAY_SIZE(buck1_inits),
},
{
.desc = {
.name = "buck2",
.of_match = of_match_ptr("BUCK2"),
.regulators_node = of_match_ptr("regulators"),
.id = BD71828_BUCK2,
.ops = &bd71828_dvs_buck_ops,
.type = REGULATOR_VOLTAGE,
.linear_ranges = bd71828_buck1267_volts,
.n_linear_ranges = ARRAY_SIZE(bd71828_buck1267_volts),
.n_voltages = BD71828_BUCK1267_VOLTS,
.enable_reg = BD71828_REG_BUCK2_EN,
.enable_mask = BD71828_MASK_RUN_EN,
.vsel_reg = BD71828_REG_BUCK2_VOLT,
.vsel_mask = BD71828_MASK_BUCK1267_VOLT,
.ramp_delay_table = bd71828_ramp_delay,
.n_ramp_values = ARRAY_SIZE(bd71828_ramp_delay),
.ramp_reg = BD71828_REG_BUCK2_MODE,
.ramp_mask = BD71828_MASK_RAMP_DELAY,
.owner = THIS_MODULE,
.of_parse_cb = buck_set_hw_dvs_levels,
},
.dvs = {
.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
ROHM_DVS_LEVEL_SUSPEND |
ROHM_DVS_LEVEL_LPSR,
.run_reg = BD71828_REG_BUCK2_VOLT,
.run_mask = BD71828_MASK_BUCK1267_VOLT,
.idle_reg = BD71828_REG_BUCK2_IDLE_VOLT,
.idle_mask = BD71828_MASK_BUCK1267_VOLT,
.idle_on_mask = BD71828_MASK_IDLE_EN,
.suspend_reg = BD71828_REG_BUCK2_SUSP_VOLT,
.suspend_mask = BD71828_MASK_BUCK1267_VOLT,
.suspend_on_mask = BD71828_MASK_SUSP_EN,
.lpsr_on_mask = BD71828_MASK_LPSR_EN,
.lpsr_reg = BD71828_REG_BUCK2_SUSP_VOLT,
.lpsr_mask = BD71828_MASK_BUCK1267_VOLT,
},
.reg_inits = buck2_inits,
.reg_init_amnt = ARRAY_SIZE(buck2_inits),
},
{
.desc = {
.name = "buck3",
.of_match = of_match_ptr("BUCK3"),
.regulators_node = of_match_ptr("regulators"),
.id = BD71828_BUCK3,
.ops = &bd71828_buck_ops,
.type = REGULATOR_VOLTAGE,
.linear_ranges = bd71828_buck3_volts,
.n_linear_ranges = ARRAY_SIZE(bd71828_buck3_volts),
.n_voltages = BD71828_BUCK3_VOLTS,
.enable_reg = BD71828_REG_BUCK3_EN,
.enable_mask = BD71828_MASK_RUN_EN,
.vsel_reg = BD71828_REG_BUCK3_VOLT,
.vsel_mask = BD71828_MASK_BUCK3_VOLT,
.owner = THIS_MODULE,
.of_parse_cb = buck_set_hw_dvs_levels,
},
.dvs = {
/*
* BUCK3 only supports single voltage for all states.
* voltage can be individually enabled for each state
* though => allow setting all states to support
* enabling power rail on different states.
*/
.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
ROHM_DVS_LEVEL_SUSPEND |
ROHM_DVS_LEVEL_LPSR,
.run_reg = BD71828_REG_BUCK3_VOLT,
.run_mask = BD71828_MASK_BUCK3_VOLT,
.idle_on_mask = BD71828_MASK_IDLE_EN,
.suspend_on_mask = BD71828_MASK_SUSP_EN,
.lpsr_on_mask = BD71828_MASK_LPSR_EN,
},
},
{
.desc = {
.name = "buck4",
.of_match = of_match_ptr("BUCK4"),
.regulators_node = of_match_ptr("regulators"),
.id = BD71828_BUCK4,
.ops = &bd71828_buck_ops,
.type = REGULATOR_VOLTAGE,
.linear_ranges = bd71828_buck4_volts,
.n_linear_ranges = ARRAY_SIZE(bd71828_buck4_volts),
.n_voltages = BD71828_BUCK4_VOLTS,
.enable_reg = BD71828_REG_BUCK4_EN,
.enable_mask = BD71828_MASK_RUN_EN,
.vsel_reg = BD71828_REG_BUCK4_VOLT,
.vsel_mask = BD71828_MASK_BUCK4_VOLT,
.owner = THIS_MODULE,
.of_parse_cb = buck_set_hw_dvs_levels,
},
.dvs = {
/*
* BUCK4 only supports single voltage for all states.
* voltage can be individually enabled for each state
* though => allow setting all states to support
* enabling power rail on different states.
*/
.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
ROHM_DVS_LEVEL_SUSPEND |
ROHM_DVS_LEVEL_LPSR,
.run_reg = BD71828_REG_BUCK4_VOLT,
.run_mask = BD71828_MASK_BUCK4_VOLT,
.idle_on_mask = BD71828_MASK_IDLE_EN,
.suspend_on_mask = BD71828_MASK_SUSP_EN,
.lpsr_on_mask = BD71828_MASK_LPSR_EN,
},
},
{
.desc = {
.name = "buck5",
.of_match = of_match_ptr("BUCK5"),
.regulators_node = of_match_ptr("regulators"),
.id = BD71828_BUCK5,
.ops = &bd71828_buck_ops,
.type = REGULATOR_VOLTAGE,
.linear_ranges = bd71828_buck5_volts,
.n_linear_ranges = ARRAY_SIZE(bd71828_buck5_volts),
.n_voltages = BD71828_BUCK5_VOLTS,
.enable_reg = BD71828_REG_BUCK5_EN,
.enable_mask = BD71828_MASK_RUN_EN,
.vsel_reg = BD71828_REG_BUCK5_VOLT,
.vsel_mask = BD71828_MASK_BUCK5_VOLT,
.owner = THIS_MODULE,
.of_parse_cb = buck_set_hw_dvs_levels,
},
.dvs = {
/*
* BUCK5 only supports single voltage for all states.
* voltage can be individually enabled for each state
* though => allow setting all states to support
* enabling power rail on different states.
*/
.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
ROHM_DVS_LEVEL_SUSPEND |
ROHM_DVS_LEVEL_LPSR,
.run_reg = BD71828_REG_BUCK5_VOLT,
.run_mask = BD71828_MASK_BUCK5_VOLT,
.idle_on_mask = BD71828_MASK_IDLE_EN,
.suspend_on_mask = BD71828_MASK_SUSP_EN,
.lpsr_on_mask = BD71828_MASK_LPSR_EN,
},
},
{
.desc = {
.name = "buck6",
.of_match = of_match_ptr("BUCK6"),
.regulators_node = of_match_ptr("regulators"),
.id = BD71828_BUCK6,
.ops = &bd71828_dvs_buck_ops,
.type = REGULATOR_VOLTAGE,
.linear_ranges = bd71828_buck1267_volts,
.n_linear_ranges = ARRAY_SIZE(bd71828_buck1267_volts),
.n_voltages = BD71828_BUCK1267_VOLTS,
.enable_reg = BD71828_REG_BUCK6_EN,
.enable_mask = BD71828_MASK_RUN_EN,
.vsel_reg = BD71828_REG_BUCK6_VOLT,
.vsel_mask = BD71828_MASK_BUCK1267_VOLT,
.ramp_delay_table = bd71828_ramp_delay,
.n_ramp_values = ARRAY_SIZE(bd71828_ramp_delay),
.ramp_reg = BD71828_REG_BUCK6_MODE,
.ramp_mask = BD71828_MASK_RAMP_DELAY,
.owner = THIS_MODULE,
.of_parse_cb = buck_set_hw_dvs_levels,
},
.dvs = {
.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
ROHM_DVS_LEVEL_SUSPEND |
ROHM_DVS_LEVEL_LPSR,
.run_reg = BD71828_REG_BUCK6_VOLT,
.run_mask = BD71828_MASK_BUCK1267_VOLT,
.idle_reg = BD71828_REG_BUCK6_IDLE_VOLT,
.idle_mask = BD71828_MASK_BUCK1267_VOLT,
.idle_on_mask = BD71828_MASK_IDLE_EN,
.suspend_reg = BD71828_REG_BUCK6_SUSP_VOLT,
.suspend_mask = BD71828_MASK_BUCK1267_VOLT,
.suspend_on_mask = BD71828_MASK_SUSP_EN,
.lpsr_on_mask = BD71828_MASK_LPSR_EN,
.lpsr_reg = BD71828_REG_BUCK6_SUSP_VOLT,
.lpsr_mask = BD71828_MASK_BUCK1267_VOLT,
},
.reg_inits = buck6_inits,
.reg_init_amnt = ARRAY_SIZE(buck6_inits),
},
{
.desc = {
.name = "buck7",
.of_match = of_match_ptr("BUCK7"),
.regulators_node = of_match_ptr("regulators"),
.id = BD71828_BUCK7,
.ops = &bd71828_dvs_buck_ops,
.type = REGULATOR_VOLTAGE,
.linear_ranges = bd71828_buck1267_volts,
.n_linear_ranges = ARRAY_SIZE(bd71828_buck1267_volts),
.n_voltages = BD71828_BUCK1267_VOLTS,
.enable_reg = BD71828_REG_BUCK7_EN,
.enable_mask = BD71828_MASK_RUN_EN,
.vsel_reg = BD71828_REG_BUCK7_VOLT,
.vsel_mask = BD71828_MASK_BUCK1267_VOLT,
.ramp_delay_table = bd71828_ramp_delay,
.n_ramp_values = ARRAY_SIZE(bd71828_ramp_delay),
.ramp_reg = BD71828_REG_BUCK7_MODE,
.ramp_mask = BD71828_MASK_RAMP_DELAY,
.owner = THIS_MODULE,
.of_parse_cb = buck_set_hw_dvs_levels,
},
.dvs = {
.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
ROHM_DVS_LEVEL_SUSPEND |
ROHM_DVS_LEVEL_LPSR,
.run_reg = BD71828_REG_BUCK7_VOLT,
.run_mask = BD71828_MASK_BUCK1267_VOLT,
.idle_reg = BD71828_REG_BUCK7_IDLE_VOLT,
.idle_mask = BD71828_MASK_BUCK1267_VOLT,
.idle_on_mask = BD71828_MASK_IDLE_EN,
.suspend_reg = BD71828_REG_BUCK7_SUSP_VOLT,
.suspend_mask = BD71828_MASK_BUCK1267_VOLT,
.suspend_on_mask = BD71828_MASK_SUSP_EN,
.lpsr_on_mask = BD71828_MASK_LPSR_EN,
.lpsr_reg = BD71828_REG_BUCK7_SUSP_VOLT,
.lpsr_mask = BD71828_MASK_BUCK1267_VOLT,
},
.reg_inits = buck7_inits,
.reg_init_amnt = ARRAY_SIZE(buck7_inits),
},
{
.desc = {
.name = "ldo1",
.of_match = of_match_ptr("LDO1"),
.regulators_node = of_match_ptr("regulators"),
.id = BD71828_LDO1,
.ops = &bd71828_ldo_ops,
.type = REGULATOR_VOLTAGE,
.linear_ranges = bd71828_ldo_volts,
.n_linear_ranges = ARRAY_SIZE(bd71828_ldo_volts),
.n_voltages = BD71828_LDO_VOLTS,
.enable_reg = BD71828_REG_LDO1_EN,
.enable_mask = BD71828_MASK_RUN_EN,
.vsel_reg = BD71828_REG_LDO1_VOLT,
.vsel_mask = BD71828_MASK_LDO_VOLT,
.owner = THIS_MODULE,
.of_parse_cb = buck_set_hw_dvs_levels,
},
.dvs = {
/*
* LDO1 only supports single voltage for all states.
* voltage can be individually enabled for each state
* though => allow setting all states to support
* enabling power rail on different states.
*/
.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
ROHM_DVS_LEVEL_SUSPEND |
ROHM_DVS_LEVEL_LPSR,
.run_reg = BD71828_REG_LDO1_VOLT,
.run_mask = BD71828_MASK_LDO_VOLT,
.idle_on_mask = BD71828_MASK_IDLE_EN,
.suspend_on_mask = BD71828_MASK_SUSP_EN,
.lpsr_on_mask = BD71828_MASK_LPSR_EN,
},
}, {
.desc = {
.name = "ldo2",
.of_match = of_match_ptr("LDO2"),
.regulators_node = of_match_ptr("regulators"),
.id = BD71828_LDO2,
.ops = &bd71828_ldo_ops,
.type = REGULATOR_VOLTAGE,
.linear_ranges = bd71828_ldo_volts,
.n_linear_ranges = ARRAY_SIZE(bd71828_ldo_volts),
.n_voltages = BD71828_LDO_VOLTS,
.enable_reg = BD71828_REG_LDO2_EN,
.enable_mask = BD71828_MASK_RUN_EN,
.vsel_reg = BD71828_REG_LDO2_VOLT,
.vsel_mask = BD71828_MASK_LDO_VOLT,
.owner = THIS_MODULE,
.of_parse_cb = buck_set_hw_dvs_levels,
},
.dvs = {
/*
* LDO2 only supports single voltage for all states.
* voltage can be individually enabled for each state
* though => allow setting all states to support
* enabling power rail on different states.
*/
.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
ROHM_DVS_LEVEL_SUSPEND |
ROHM_DVS_LEVEL_LPSR,
.run_reg = BD71828_REG_LDO2_VOLT,
.run_mask = BD71828_MASK_LDO_VOLT,
.idle_on_mask = BD71828_MASK_IDLE_EN,
.suspend_on_mask = BD71828_MASK_SUSP_EN,
.lpsr_on_mask = BD71828_MASK_LPSR_EN,
},
}, {
.desc = {
.name = "ldo3",
.of_match = of_match_ptr("LDO3"),
.regulators_node = of_match_ptr("regulators"),
.id = BD71828_LDO3,
.ops = &bd71828_ldo_ops,
.type = REGULATOR_VOLTAGE,
.linear_ranges = bd71828_ldo_volts,
.n_linear_ranges = ARRAY_SIZE(bd71828_ldo_volts),
.n_voltages = BD71828_LDO_VOLTS,
.enable_reg = BD71828_REG_LDO3_EN,
.enable_mask = BD71828_MASK_RUN_EN,
.vsel_reg = BD71828_REG_LDO3_VOLT,
.vsel_mask = BD71828_MASK_LDO_VOLT,
.owner = THIS_MODULE,
.of_parse_cb = buck_set_hw_dvs_levels,
},
.dvs = {
/*
* LDO3 only supports single voltage for all states.
* voltage can be individually enabled for each state
* though => allow setting all states to support
* enabling power rail on different states.
*/
.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
ROHM_DVS_LEVEL_SUSPEND |
ROHM_DVS_LEVEL_LPSR,
.run_reg = BD71828_REG_LDO3_VOLT,
.run_mask = BD71828_MASK_LDO_VOLT,
.idle_on_mask = BD71828_MASK_IDLE_EN,
.suspend_on_mask = BD71828_MASK_SUSP_EN,
.lpsr_on_mask = BD71828_MASK_LPSR_EN,
},
}, {
.desc = {
.name = "ldo4",
.of_match = of_match_ptr("LDO4"),
.regulators_node = of_match_ptr("regulators"),
.id = BD71828_LDO4,
.ops = &bd71828_ldo_ops,
.type = REGULATOR_VOLTAGE,
.linear_ranges = bd71828_ldo_volts,
.n_linear_ranges = ARRAY_SIZE(bd71828_ldo_volts),
.n_voltages = BD71828_LDO_VOLTS,
.enable_reg = BD71828_REG_LDO4_EN,
.enable_mask = BD71828_MASK_RUN_EN,
.vsel_reg = BD71828_REG_LDO4_VOLT,
.vsel_mask = BD71828_MASK_LDO_VOLT,
.owner = THIS_MODULE,
.of_parse_cb = buck_set_hw_dvs_levels,
},
.dvs = {
/*
* LDO1 only supports single voltage for all states.
* voltage can be individually enabled for each state
* though => allow setting all states to support
* enabling power rail on different states.
*/
.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
ROHM_DVS_LEVEL_SUSPEND |
ROHM_DVS_LEVEL_LPSR,
.run_reg = BD71828_REG_LDO4_VOLT,
.run_mask = BD71828_MASK_LDO_VOLT,
.idle_on_mask = BD71828_MASK_IDLE_EN,
.suspend_on_mask = BD71828_MASK_SUSP_EN,
.lpsr_on_mask = BD71828_MASK_LPSR_EN,
},
}, {
.desc = {
.name = "ldo5",
.of_match = of_match_ptr("LDO5"),
.regulators_node = of_match_ptr("regulators"),
.id = BD71828_LDO5,
.ops = &bd71828_ldo_ops,
.type = REGULATOR_VOLTAGE,
.linear_ranges = bd71828_ldo_volts,
.n_linear_ranges = ARRAY_SIZE(bd71828_ldo_volts),
.n_voltages = BD71828_LDO_VOLTS,
.enable_reg = BD71828_REG_LDO5_EN,
.enable_mask = BD71828_MASK_RUN_EN,
.vsel_reg = BD71828_REG_LDO5_VOLT,
.vsel_mask = BD71828_MASK_LDO_VOLT,
.of_parse_cb = buck_set_hw_dvs_levels,
.owner = THIS_MODULE,
},
/*
* LDO5 is special. It can choose vsel settings to be configured
* from 2 different registers (by GPIO).
*
* This driver supports only configuration where
* BD71828_REG_LDO5_VOLT_L is used.
*/
.dvs = {
.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
ROHM_DVS_LEVEL_SUSPEND |
ROHM_DVS_LEVEL_LPSR,
.run_reg = BD71828_REG_LDO5_VOLT,
.run_mask = BD71828_MASK_LDO_VOLT,
.idle_on_mask = BD71828_MASK_IDLE_EN,
.suspend_on_mask = BD71828_MASK_SUSP_EN,
.lpsr_on_mask = BD71828_MASK_LPSR_EN,
},
}, {
.desc = {
.name = "ldo6",
.of_match = of_match_ptr("LDO6"),
.regulators_node = of_match_ptr("regulators"),
.id = BD71828_LDO6,
.ops = &bd71828_ldo6_ops,
.type = REGULATOR_VOLTAGE,
.fixed_uV = BD71828_LDO_6_VOLTAGE,
.n_voltages = 1,
.enable_reg = BD71828_REG_LDO6_EN,
.enable_mask = BD71828_MASK_RUN_EN,
.owner = THIS_MODULE,
/*
* LDO6 only supports enable/disable for all states.
* Voltage for LDO6 is fixed.
*/
.of_parse_cb = ldo6_parse_dt,
},
}, {
.desc = {
/* SNVS LDO in data-sheet */
.name = "ldo7",
.of_match = of_match_ptr("LDO7"),
.regulators_node = of_match_ptr("regulators"),
.id = BD71828_LDO_SNVS,
.ops = &bd71828_ldo_ops,
.type = REGULATOR_VOLTAGE,
.linear_ranges = bd71828_ldo_volts,
.n_linear_ranges = ARRAY_SIZE(bd71828_ldo_volts),
.n_voltages = BD71828_LDO_VOLTS,
.enable_reg = BD71828_REG_LDO7_EN,
.enable_mask = BD71828_MASK_RUN_EN,
.vsel_reg = BD71828_REG_LDO7_VOLT,
.vsel_mask = BD71828_MASK_LDO_VOLT,
.owner = THIS_MODULE,
.of_parse_cb = buck_set_hw_dvs_levels,
},
.dvs = {
/*
* LDO7 only supports single voltage for all states.
* voltage can be individually enabled for each state
* though => allow setting all states to support
* enabling power rail on different states.
*/
.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
ROHM_DVS_LEVEL_SUSPEND |
ROHM_DVS_LEVEL_LPSR,
.run_reg = BD71828_REG_LDO7_VOLT,
.idle_reg = BD71828_REG_LDO7_VOLT,
.suspend_reg = BD71828_REG_LDO7_VOLT,
.lpsr_reg = BD71828_REG_LDO7_VOLT,
.run_mask = BD71828_MASK_LDO_VOLT,
.idle_on_mask = BD71828_MASK_IDLE_EN,
.suspend_on_mask = BD71828_MASK_SUSP_EN,
.lpsr_on_mask = BD71828_MASK_LPSR_EN,
},
},
};
static int bd71828_probe(struct platform_device *pdev)
{
int i, j, ret;
struct regulator_config config = {
.dev = pdev->dev.parent,
};
config.regmap = dev_get_regmap(pdev->dev.parent, NULL);
if (!config.regmap)
return -ENODEV;
for (i = 0; i < ARRAY_SIZE(bd71828_rdata); i++) {
struct regulator_dev *rdev;
const struct bd71828_regulator_data *rd;
rd = &bd71828_rdata[i];
rdev = devm_regulator_register(&pdev->dev,
&rd->desc, &config);
if (IS_ERR(rdev))
return dev_err_probe(&pdev->dev, PTR_ERR(rdev),
"failed to register %s regulator\n",
rd->desc.name);
for (j = 0; j < rd->reg_init_amnt; j++) {
ret = regmap_update_bits(config.regmap,
rd->reg_inits[j].reg,
rd->reg_inits[j].mask,
rd->reg_inits[j].val);
if (ret)
return dev_err_probe(&pdev->dev, ret,
"regulator %s init failed\n",
rd->desc.name);
}
}
return 0;
}
static struct platform_driver bd71828_regulator = {
.driver = {
.name = "bd71828-pmic",
.probe_type = PROBE_PREFER_ASYNCHRONOUS,
},
.probe = bd71828_probe,
};
module_platform_driver(bd71828_regulator);
MODULE_AUTHOR("Matti Vaittinen <[email protected]>");
MODULE_DESCRIPTION("BD71828 voltage regulator driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:bd71828-pmic");
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