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drivers: regulator: max20335: add support for ship mode

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Allows the user to disable PMIC.

Signed-off-by: Bartosz Bilas <b.bilas@grinn-global.com>
This commit is contained in:
Bartosz Bilas 2024-01-04 19:55:03 +01:00 committed by Anas Nashif
parent 10e66dc9fc
commit c1a1e4524d
2 changed files with 53 additions and 4 deletions
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17
drivers/regulator/Kconfig.max20335
View file

@ -10,9 +10,20 @@ config REGULATOR_MAX20335
help
Enable the Maxim MAX20335 PMIC regulator driver
if REGULATOR_MAX20335
config REGULATOR_MAXIM_MAX20335_COMMON_INIT_PRIORITY
int "MAX20335 regulator driver init priority (common part)"
default 86
help
Init priority for the Maxim MAX20335 regulator driver
(common part). It must be greater than I2C and MFD init priority.
config REGULATOR_MAXIM_MAX20335_INIT_PRIORITY
int "MAX20335 regulator driver init priority"
default 86
depends on REGULATOR_MAX20335
default 87
help
Init priority for the Maxim MAX20335 regulator driver.
Init priority for the Maxim MAX20335 regulator driver. It must be
greater than REGULATOR_MAXIM_MAX20335_COMMON_INIT_PRIORITY
endif

40
drivers/regulator/regulator_max20335.c
View file

@ -16,6 +16,7 @@
#define MAX20335_BUCK2_CFG 0x0FU
#define MAX20335_BUCK2_VSET 0x10U
#define MAX20335_BUCK12_CSET 0x11U
#define MAX20335_PWR_CMD 0x1FU
#define MAX20335_BUCK1_CSET_MASK 0xF0U
#define MAX20335_BUCK2_CSET_MASK 0x0FU
#define MAX20335_BUCK2_CSET_SHIFT 4
@ -32,6 +33,8 @@
#define MAX20335_LDO_EN BIT(1)
#define MAX20335_LDO_EN_MASK GENMASK(2, 1)
#define MAX20335_OFF_MODE 0xB2U
enum max20335_pmic_sources {
MAX20335_PMIC_SOURCE_BUCK1,
MAX20335_PMIC_SOURCE_BUCK2,
@ -49,6 +52,10 @@ struct regulator_max20335_desc {
const struct linear_range *ua_range;
};
struct regulator_max20335_common_config {
struct i2c_dt_spec bus;
};
struct regulator_max20335_config {
struct regulator_common_config common;
struct i2c_dt_spec bus;
@ -283,6 +290,13 @@ static int regulator_max20335_set_current_limit(const struct device *dev,
return i2c_reg_write_byte_dt(&config->bus, MAX20335_BUCK12_CSET, val);
}
static int regulator_max20335_power_off(const struct device *dev)
{
const struct regulator_max20335_common_config *common_config = dev->config;
return i2c_reg_write_byte_dt(&common_config->bus, MAX20335_PWR_CMD, MAX20335_OFF_MODE);
}
static int regulator_max20335_init(const struct device *dev)
{
const struct regulator_max20335_config *config = dev->config;
@ -296,6 +310,21 @@ static int regulator_max20335_init(const struct device *dev)
return regulator_common_init(dev, false);
}
static int regulator_max20335_common_init(const struct device *dev)
{
const struct regulator_max20335_common_config *common_config = dev->config;
if (!i2c_is_ready_dt(&common_config->bus)) {
return -ENODEV;
}
return 0;
}
static const struct regulator_parent_driver_api parent_api = {
.ship_mode = regulator_max20335_power_off,
};
static const struct regulator_driver_api api = {
.enable = regulator_max20335_enable,
.disable = regulator_max20335_disable,
@ -332,10 +361,19 @@ static const struct regulator_driver_api api = {
())
#define REGULATOR_MAX20335_DEFINE_ALL(inst) \
static const struct regulator_max20335_common_config common_config_##inst = { \
.bus = I2C_DT_SPEC_GET(DT_INST_PARENT(inst)), \
}; \
\
DEVICE_DT_INST_DEFINE(inst, regulator_max20335_common_init, \
NULL, NULL, &common_config_##inst, POST_KERNEL, \
CONFIG_REGULATOR_MAXIM_MAX20335_COMMON_INIT_PRIORITY, \
&parent_api); \
\
REGULATOR_MAX20335_DEFINE_COND(inst, buck1, MAX20335_PMIC_SOURCE_BUCK1) \
REGULATOR_MAX20335_DEFINE_COND(inst, buck2, MAX20335_PMIC_SOURCE_BUCK2) \
REGULATOR_MAX20335_DEFINE_COND(inst, ldo1, MAX20335_PMIC_SOURCE_LDO1) \
REGULATOR_MAX20335_DEFINE_COND(inst, ldo2, MAX20335_PMIC_SOURCE_LDO2) \
REGULATOR_MAX20335_DEFINE_COND(inst, ldo3, MAX20335_PMIC_SOURCE_LDO3)
DT_INST_FOREACH_STATUS_OKAY(REGULATOR_MAX20335_DEFINE_ALL);
DT_INST_FOREACH_STATUS_OKAY(REGULATOR_MAX20335_DEFINE_ALL)