mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-28 22:54:05 +08:00
regulator: mp5416: add mp5416 regulator driver
Adding regulator driver for the device mp5416. The MP5416 PMIC device contains four DC-DC buck converters and five regulators, accessed over I2C. Signed-off-by: Saravanan Sekar <sravanhome@gmail.com> Link: https://lore.kernel.org/r/20200204110419.25933-3-sravanhome@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Saravanan Sekar
Mark Brown
parent
65c3851352
commit
a273188b87
@ -613,6 +613,16 @@ config REGULATOR_MCP16502
|
||||
through the regulator interface. In addition it enables
|
||||
suspend-to-ram/standby transition.
|
||||
|
||||
config REGULATOR_MP5416
|
||||
tristate "Monolithic MP5416 PMIC"
|
||||
depends on I2C && OF
|
||||
select REGMAP_I2C
|
||||
help
|
||||
Say y here to support the MP5416 PMIC. This will enable supports
|
||||
the software controllable 4 buck and 4 LDO regulators.
|
||||
Say M here if you want to include support for the regulator as a
|
||||
module.
|
||||
|
||||
config REGULATOR_MP8859
|
||||
tristate "MPS MP8859 regulator driver"
|
||||
depends on I2C
|
||||
|
||||
@ -78,6 +78,7 @@ obj-$(CONFIG_REGULATOR_MC13783) += mc13783-regulator.o
|
||||
obj-$(CONFIG_REGULATOR_MC13892) += mc13892-regulator.o
|
||||
obj-$(CONFIG_REGULATOR_MC13XXX_CORE) += mc13xxx-regulator-core.o
|
||||
obj-$(CONFIG_REGULATOR_MCP16502) += mcp16502.o
|
||||
obj-$(CONFIG_REGULATOR_MP5416) += mp5416.o
|
||||
obj-$(CONFIG_REGULATOR_MP8859) += mp8859.o
|
||||
obj-$(CONFIG_REGULATOR_MPQ7920) += mpq7920.o
|
||||
obj-$(CONFIG_REGULATOR_MT6311) += mt6311-regulator.o
|
||||
|
||||
245
drivers/regulator/mp5416.c
Normal file
245
drivers/regulator/mp5416.c
Normal file
@ -0,0 +1,245 @@
|
||||
// SPDX-License-Identifier: GPL-2.0+
|
||||
//
|
||||
// mp5416.c - regulator driver for mps mp5416
|
||||
//
|
||||
// Copyright 2020 Monolithic Power Systems, Inc
|
||||
//
|
||||
// Author: Saravanan Sekar <sravanhome@gmail.com>
|
||||
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/err.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/regmap.h>
|
||||
#include <linux/regulator/driver.h>
|
||||
#include <linux/i2c.h>
|
||||
|
||||
#define MP5416_REG_CTL0 0x00
|
||||
#define MP5416_REG_CTL1 0x01
|
||||
#define MP5416_REG_CTL2 0x02
|
||||
#define MP5416_REG_ILIM 0x03
|
||||
#define MP5416_REG_BUCK1 0x04
|
||||
#define MP5416_REG_BUCK2 0x05
|
||||
#define MP5416_REG_BUCK3 0x06
|
||||
#define MP5416_REG_BUCK4 0x07
|
||||
#define MP5416_REG_LDO1 0x08
|
||||
#define MP5416_REG_LDO2 0x09
|
||||
#define MP5416_REG_LDO3 0x0a
|
||||
#define MP5416_REG_LDO4 0x0b
|
||||
|
||||
#define MP5416_REGULATOR_EN BIT(7)
|
||||
#define MP5416_MASK_VSET 0x7f
|
||||
#define MP5416_MASK_BUCK1_ILIM 0xc0
|
||||
#define MP5416_MASK_BUCK2_ILIM 0x0c
|
||||
#define MP5416_MASK_BUCK3_ILIM 0x30
|
||||
#define MP5416_MASK_BUCK4_ILIM 0x03
|
||||
#define MP5416_MASK_DVS_SLEWRATE 0xc0
|
||||
|
||||
/* values in uV */
|
||||
#define MP5416_VOLT1_MIN 600000
|
||||
#define MP5416_VOLT1_MAX 2187500
|
||||
#define MP5416_VOLT1_STEP 12500
|
||||
#define MP5416_VOLT2_MIN 800000
|
||||
#define MP5416_VOLT2_MAX 3975000
|
||||
#define MP5416_VOLT2_STEP 25000
|
||||
|
||||
#define MP5416_VOLT1_RANGE \
|
||||
((MP5416_VOLT1_MAX - MP5416_VOLT1_MIN)/MP5416_VOLT1_STEP + 1)
|
||||
#define MP5416_VOLT2_RANGE \
|
||||
((MP5416_VOLT2_MAX - MP5416_VOLT2_MIN)/MP5416_VOLT2_STEP + 1)
|
||||
|
||||
#define MP5416BUCK(_name, _id, _ilim, _dreg, _dval, _vsel) \
|
||||
[MP5416_BUCK ## _id] = { \
|
||||
.id = MP5416_BUCK ## _id, \
|
||||
.name = _name, \
|
||||
.of_match = _name, \
|
||||
.regulators_node = "regulators", \
|
||||
.ops = &mp5416_buck_ops, \
|
||||
.min_uV = MP5416_VOLT ##_vsel## _MIN, \
|
||||
.uV_step = MP5416_VOLT ##_vsel## _STEP, \
|
||||
.n_voltages = MP5416_VOLT ##_vsel## _RANGE, \
|
||||
.curr_table = _ilim, \
|
||||
.n_current_limits = ARRAY_SIZE(_ilim), \
|
||||
.csel_reg = MP5416_REG_ILIM, \
|
||||
.csel_mask = MP5416_MASK_BUCK ## _id ##_ILIM, \
|
||||
.vsel_reg = MP5416_REG_BUCK ## _id, \
|
||||
.vsel_mask = MP5416_MASK_VSET, \
|
||||
.enable_reg = MP5416_REG_BUCK ## _id, \
|
||||
.enable_mask = MP5416_REGULATOR_EN, \
|
||||
.active_discharge_on = _dval, \
|
||||
.active_discharge_reg = _dreg, \
|
||||
.active_discharge_mask = _dval, \
|
||||
.owner = THIS_MODULE, \
|
||||
}
|
||||
|
||||
#define MP5416LDO(_name, _id) \
|
||||
[MP5416_LDO ## _id] = { \
|
||||
.id = MP5416_LDO ## _id, \
|
||||
.name = _name, \
|
||||
.of_match = _name, \
|
||||
.regulators_node = "regulators", \
|
||||
.ops = &mp5416_ldo_ops, \
|
||||
.min_uV = MP5416_VOLT2_MIN, \
|
||||
.uV_step = MP5416_VOLT2_STEP, \
|
||||
.n_voltages = MP5416_VOLT2_RANGE, \
|
||||
.vsel_reg = MP5416_REG_LDO ##_id, \
|
||||
.vsel_mask = MP5416_MASK_VSET, \
|
||||
.enable_reg = MP5416_REG_LDO ##_id, \
|
||||
.enable_mask = MP5416_REGULATOR_EN, \
|
||||
.active_discharge_on = BIT(_id), \
|
||||
.active_discharge_reg = MP5416_REG_CTL2, \
|
||||
.active_discharge_mask = BIT(_id), \
|
||||
.owner = THIS_MODULE, \
|
||||
}
|
||||
|
||||
enum mp5416_regulators {
|
||||
MP5416_BUCK1,
|
||||
MP5416_BUCK2,
|
||||
MP5416_BUCK3,
|
||||
MP5416_BUCK4,
|
||||
MP5416_LDO1,
|
||||
MP5416_LDO2,
|
||||
MP5416_LDO3,
|
||||
MP5416_LDO4,
|
||||
MP5416_MAX_REGULATORS,
|
||||
};
|
||||
|
||||
static const struct regmap_config mp5416_regmap_config = {
|
||||
.reg_bits = 8,
|
||||
.val_bits = 8,
|
||||
.max_register = 0x0d,
|
||||
};
|
||||
|
||||
/* Current limits array (in uA)
|
||||
* ILIM1 & ILIM3
|
||||
*/
|
||||
static const unsigned int mp5416_I_limits1[] = {
|
||||
3800000, 4600000, 5600000, 6800000
|
||||
};
|
||||
|
||||
/* ILIM2 & ILIM4 */
|
||||
static const unsigned int mp5416_I_limits2[] = {
|
||||
2200000, 3200000, 4200000, 5200000
|
||||
};
|
||||
|
||||
static int mp5416_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay);
|
||||
|
||||
static const struct regulator_ops mp5416_ldo_ops = {
|
||||
.enable = regulator_enable_regmap,
|
||||
.disable = regulator_disable_regmap,
|
||||
.is_enabled = regulator_is_enabled_regmap,
|
||||
.list_voltage = regulator_list_voltage_linear,
|
||||
.map_voltage = regulator_map_voltage_linear,
|
||||
.get_voltage_sel = regulator_get_voltage_sel_regmap,
|
||||
.set_voltage_sel = regulator_set_voltage_sel_regmap,
|
||||
.set_active_discharge = regulator_set_active_discharge_regmap,
|
||||
};
|
||||
|
||||
static const struct regulator_ops mp5416_buck_ops = {
|
||||
.enable = regulator_enable_regmap,
|
||||
.disable = regulator_disable_regmap,
|
||||
.is_enabled = regulator_is_enabled_regmap,
|
||||
.list_voltage = regulator_list_voltage_linear,
|
||||
.map_voltage = regulator_map_voltage_linear,
|
||||
.get_voltage_sel = regulator_get_voltage_sel_regmap,
|
||||
.set_voltage_sel = regulator_set_voltage_sel_regmap,
|
||||
.set_active_discharge = regulator_set_active_discharge_regmap,
|
||||
.get_current_limit = regulator_get_current_limit_regmap,
|
||||
.set_current_limit = regulator_set_current_limit_regmap,
|
||||
.set_ramp_delay = mp5416_set_ramp_delay,
|
||||
};
|
||||
|
||||
static struct regulator_desc mp5416_regulators_desc[MP5416_MAX_REGULATORS] = {
|
||||
MP5416BUCK("buck1", 1, mp5416_I_limits1, MP5416_REG_CTL1, BIT(0), 1),
|
||||
MP5416BUCK("buck2", 2, mp5416_I_limits2, MP5416_REG_CTL1, BIT(1), 2),
|
||||
MP5416BUCK("buck3", 3, mp5416_I_limits1, MP5416_REG_CTL1, BIT(2), 1),
|
||||
MP5416BUCK("buck4", 4, mp5416_I_limits2, MP5416_REG_CTL2, BIT(5), 2),
|
||||
MP5416LDO("ldo1", 1),
|
||||
MP5416LDO("ldo2", 2),
|
||||
MP5416LDO("ldo3", 3),
|
||||
MP5416LDO("ldo4", 4),
|
||||
};
|
||||
|
||||
/*
|
||||
* DVS ramp rate BUCK1 to BUCK4
|
||||
* 00: 32mV/us
|
||||
* 01: 16mV/us
|
||||
* 10: 8mV/us
|
||||
* 11: 4mV/us
|
||||
*/
|
||||
static int mp5416_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
|
||||
{
|
||||
unsigned int ramp_val;
|
||||
|
||||
if (ramp_delay > 32000 || ramp_delay < 0)
|
||||
return -EINVAL;
|
||||
|
||||
if (ramp_delay <= 4000)
|
||||
ramp_val = 3;
|
||||
else if (ramp_delay <= 8000)
|
||||
ramp_val = 2;
|
||||
else if (ramp_delay <= 16000)
|
||||
ramp_val = 1;
|
||||
else
|
||||
ramp_val = 0;
|
||||
|
||||
return regmap_update_bits(rdev->regmap, MP5416_REG_CTL2,
|
||||
MP5416_MASK_DVS_SLEWRATE, ramp_val << 6);
|
||||
}
|
||||
|
||||
static int mp5416_i2c_probe(struct i2c_client *client)
|
||||
{
|
||||
struct device *dev = &client->dev;
|
||||
struct regulator_config config = { NULL, };
|
||||
struct regulator_dev *rdev;
|
||||
struct regmap *regmap;
|
||||
int i;
|
||||
|
||||
regmap = devm_regmap_init_i2c(client, &mp5416_regmap_config);
|
||||
if (IS_ERR(regmap)) {
|
||||
dev_err(dev, "Failed to allocate regmap!\n");
|
||||
return PTR_ERR(regmap);
|
||||
}
|
||||
|
||||
config.dev = dev;
|
||||
config.regmap = regmap;
|
||||
|
||||
for (i = 0; i < MP5416_MAX_REGULATORS; i++) {
|
||||
rdev = devm_regulator_register(dev,
|
||||
&mp5416_regulators_desc[i],
|
||||
&config);
|
||||
if (IS_ERR(rdev)) {
|
||||
dev_err(dev, "Failed to register regulator!\n");
|
||||
return PTR_ERR(rdev);
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct of_device_id mp5416_of_match[] = {
|
||||
{ .compatible = "mps,mp5416" },
|
||||
{},
|
||||
};
|
||||
MODULE_DEVICE_TABLE(of, mp5416_of_match);
|
||||
|
||||
static const struct i2c_device_id mp5416_id[] = {
|
||||
{ "mp5416", },
|
||||
{ },
|
||||
};
|
||||
MODULE_DEVICE_TABLE(i2c, mp5416_id);
|
||||
|
||||
static struct i2c_driver mp5416_regulator_driver = {
|
||||
.driver = {
|
||||
.name = "mp5416",
|
||||
.of_match_table = of_match_ptr(mp5416_of_match),
|
||||
},
|
||||
.probe_new = mp5416_i2c_probe,
|
||||
.id_table = mp5416_id,
|
||||
};
|
||||
module_i2c_driver(mp5416_regulator_driver);
|
||||
|
||||
MODULE_AUTHOR("Saravanan Sekar <sravanhome@gmail.com>");
|
||||
MODULE_DESCRIPTION("MP5416 PMIC regulator driver");
|
||||
MODULE_LICENSE("GPL");
|
||||
Loading…
Reference in New Issue
Block a user