mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-11 12:28:41 +08:00
a8280a5dd5
Driver does not seem to utilize anything from the kernel.h, compiles and works fine for me without it. So remove kernel.h include as it pulls in a lot of unused stuff. Signed-off-by: Robert Marko <robimarko@gmail.com> Cc: christophe.jaillet@wanadoo.fr Link: https://lore.kernel.org/r/20220607124759.775133-1-robimarko@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
250 lines
7.3 KiB
C
250 lines
7.3 KiB
C
// 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/err.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/init.h>
|
|
#include <linux/module.h>
|
|
#include <linux/of_device.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/regmap.h>
|
|
#include <linux/regulator/driver.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, \
|
|
.ramp_reg = MP5416_REG_CTL2, \
|
|
.ramp_mask = MP5416_MASK_DVS_SLEWRATE, \
|
|
.ramp_delay_table = mp5416_buck_ramp_table, \
|
|
.n_ramp_values = ARRAY_SIZE(mp5416_buck_ramp_table), \
|
|
.active_discharge_on = _dval, \
|
|
.active_discharge_reg = _dreg, \
|
|
.active_discharge_mask = _dval, \
|
|
.owner = THIS_MODULE, \
|
|
}
|
|
|
|
#define MP5416LDO(_name, _id, _dval) \
|
|
[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 = _dval, \
|
|
.active_discharge_reg = MP5416_REG_CTL2, \
|
|
.active_discharge_mask = _dval, \
|
|
.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
|
|
};
|
|
|
|
/*
|
|
* DVS ramp rate BUCK1 to BUCK4
|
|
* 00: 32mV/us
|
|
* 01: 16mV/us
|
|
* 10: 8mV/us
|
|
* 11: 4mV/us
|
|
*/
|
|
static const unsigned int mp5416_buck_ramp_table[] = {
|
|
32000, 16000, 8000, 4000
|
|
};
|
|
|
|
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 = regulator_set_ramp_delay_regmap,
|
|
};
|
|
|
|
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, BIT(4)),
|
|
MP5416LDO("ldo2", 2, BIT(3)),
|
|
MP5416LDO("ldo3", 3, BIT(2)),
|
|
MP5416LDO("ldo4", 4, BIT(1)),
|
|
};
|
|
|
|
static struct regulator_desc mp5496_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), 1),
|
|
MP5416BUCK("buck3", 3, mp5416_I_limits1, MP5416_REG_CTL1, BIT(2), 1),
|
|
MP5416BUCK("buck4", 4, mp5416_I_limits2, MP5416_REG_CTL2, BIT(5), 1),
|
|
MP5416LDO("ldo1", 1, BIT(4)),
|
|
MP5416LDO("ldo2", 2, BIT(3)),
|
|
MP5416LDO("ldo3", 3, BIT(2)),
|
|
MP5416LDO("ldo4", 4, BIT(1)),
|
|
};
|
|
|
|
static int mp5416_i2c_probe(struct i2c_client *client)
|
|
{
|
|
struct device *dev = &client->dev;
|
|
struct regulator_config config = { NULL, };
|
|
static const struct regulator_desc *desc;
|
|
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);
|
|
}
|
|
|
|
desc = of_device_get_match_data(dev);
|
|
if (!desc)
|
|
return -ENODEV;
|
|
|
|
config.dev = dev;
|
|
config.regmap = regmap;
|
|
|
|
for (i = 0; i < MP5416_MAX_REGULATORS; i++) {
|
|
rdev = devm_regulator_register(dev,
|
|
&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", .data = &mp5416_regulators_desc },
|
|
{ .compatible = "mps,mp5496", .data = &mp5496_regulators_desc },
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(of, mp5416_of_match);
|
|
|
|
static const struct i2c_device_id mp5416_id[] = {
|
|
{ "mp5416", },
|
|
{ "mp5496", },
|
|
{ },
|
|
};
|
|
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");
|