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drivers: regulator: npm1100: add initial support

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While nPM1100 is to be operated in fixed configuration for some
applications, it has some degree of configuration via GPIOs. For
example, mode (auto/PWM) can be configured via MODE pin. VBUS current
can also be adjusted using ISET pin, even though there is no API yet to
limit the PMIC input current.

This patch adds a new regulator class driver for nPM1100 PMIC, so that
it can be used with the standard regulator API when needed.

Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
This commit is contained in:
Gerard Marull-Paretas 2023-01-12 11:02:06 +01:00 • committed by Carles Cufí
commit 8c73db666c
6 changed files with 224 additions and 0 deletions
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1
drivers/regulator/CMakeLists.txt
View file

@ -6,6 +6,7 @@ zephyr_library()
zephyr_library_sources(regulator_common.c)
zephyr_library_sources_ifdef(CONFIG_REGULATOR_FAKE regulator_fake.c)
zephyr_library_sources_ifdef(CONFIG_REGULATOR_FIXED regulator_fixed.c)
zephyr_library_sources_ifdef(CONFIG_REGULATOR_NPM1100 regulator_npm1100.c)
zephyr_library_sources_ifdef(CONFIG_REGULATOR_NPM6001 regulator_npm6001.c)
zephyr_library_sources_ifdef(CONFIG_REGULATOR_PCA9420 regulator_pca9420.c)
zephyr_library_sources_ifdef(CONFIG_REGULATOR_SHELL regulator_shell.c)

1
drivers/regulator/Kconfig
View file

@ -23,6 +23,7 @@ source "subsys/logging/Kconfig.template.log_config"
source "drivers/regulator/Kconfig.fake"
source "drivers/regulator/Kconfig.fixed"
source "drivers/regulator/Kconfig.npm1100"
source "drivers/regulator/Kconfig.npm6001"
source "drivers/regulator/Kconfig.pca9420"

16
drivers/regulator/Kconfig.npm1100 Normal file
View file

@ -0,0 +1,16 @@
# Copyright (c) 2023 Nordic Semiconductor ASA
# SPDX -License-Identifier: Apache-2.0
config REGULATOR_NPM1100
bool "nPM1100 PMIC regulator driver"
default y
depends on DT_HAS_NORDIC_NPM1100_ENABLED
help
Enable the Nordic nPM1100 PMIC regulator driver
config REGULATOR_NPM1100_INIT_PRIORITY
int "nPM1100 regulator driver init priority"
default KERNEL_INIT_PRIORITY_DEVICE
depends on REGULATOR_NPM1100
help
Init priority for the Nordic nPM1100 regulator driver.

137
drivers/regulator/regulator_npm1100.c Normal file
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@ -0,0 +1,137 @@
/*
* Copyright (c) 2023 Nordic Semiconductor ASA
* SPDX-License-Identifier: Apache-2.0
*/
#define DT_DRV_COMPAT nordic_npm1100
#include <errno.h>
#include <zephyr/drivers/gpio.h>
#include <zephyr/drivers/regulator.h>
#include <zephyr/dt-bindings/regulator/npm1100.h>
struct regulator_npm1100_pconfig {
struct gpio_dt_spec iset;
};
struct regulator_npm1100_config {
struct regulator_common_config common;
struct gpio_dt_spec mode;
};
struct regulator_npm1100_data {
struct regulator_common_data data;
};
static int regulator_npm1100_set_mode(const struct device *dev,
regulator_mode_t mode)
{
const struct regulator_npm1100_config *config = dev->config;
if ((config->mode.port == NULL) || (mode > NPM1100_MODE_PWM)) {
return -ENOTSUP;
}
return gpio_pin_set_dt(&config->mode,
mode == NPM1100_MODE_AUTO ? 0 : 1);
}
static int regulator_npm1100_get_mode(const struct device *dev,
regulator_mode_t *mode)
{
const struct regulator_npm1100_config *config = dev->config;
int ret;
if (config->mode.port == NULL) {
return -ENOTSUP;
}
ret = gpio_pin_get_dt(&config->mode);
if (ret < 0) {
return ret;
}
*mode = (ret == 0) ? NPM1100_MODE_AUTO : NPM1100_MODE_PWM;
return 0;
}
static int regulator_npm1100_init(const struct device *dev)
{
const struct regulator_npm1100_config *config = dev->config;
int ret;
if (config->mode.port != NULL) {
if (!gpio_is_ready_dt(&config->mode)) {
return -ENODEV;
}
ret = gpio_pin_configure_dt(&config->mode,
GPIO_INPUT | GPIO_OUTPUT_INACTIVE);
if (ret < 0) {
return ret;
}
}
regulator_common_data_init(dev);
return regulator_common_init(dev, true);
}
static int regulator_npm1100_common_init(const struct device *dev)
{
const struct regulator_npm1100_pconfig *config = dev->config;
if (config->iset.port != NULL) {
int ret;
if (!gpio_is_ready_dt(&config->iset)) {
return -ENODEV;
}
ret = gpio_pin_configure_dt(&config->iset,
GPIO_OUTPUT_INACTIVE);
if (ret < 0) {
return ret;
}
}
return 0;
}
static const struct regulator_driver_api api = {
.set_mode = regulator_npm1100_set_mode,
.get_mode = regulator_npm1100_get_mode,
};
#define REGULATOR_NPM1100_DEFINE_BUCK(node_id, id) \
static struct regulator_npm1100_data data_##id; \
\
static const struct regulator_npm1100_config config_##id = { \
.common = REGULATOR_DT_COMMON_CONFIG_INIT(node_id), \
.mode = GPIO_DT_SPEC_GET_OR(node_id, nordic_mode_gpios, {}), \
}; \
\
DEVICE_DT_DEFINE(node_id, regulator_npm1100_init, NULL, &data_##id, \
&config_##id, POST_KERNEL, \
CONFIG_REGULATOR_NPM1100_INIT_PRIORITY, &api);
#define REGULATOR_NPM1100_DEFINE_BUCK_COND(inst) \
COND_CODE_1(DT_NODE_EXISTS(DT_INST_CHILD(inst, buck)), \
(REGULATOR_NPM1100_DEFINE_BUCK(DT_INST_CHILD(inst, buck), \
buck##inst)), \
())
#define REGULATOR_NPM1100_DEFINE_ALL(inst) \
static const struct regulator_npm1100_pconfig config_##inst = { \
.iset = GPIO_DT_SPEC_INST_GET_OR(inst, nordic_iset_gpios, {}), \
}; \
\
DEVICE_DT_INST_DEFINE(inst, regulator_npm1100_common_init, NULL, NULL, \
&config_##inst, POST_KERNEL, \
CONFIG_REGULATOR_NPM1100_INIT_PRIORITY, NULL); \
\
REGULATOR_NPM1100_DEFINE_BUCK_COND(inst)
DT_INST_FOREACH_STATUS_OKAY(REGULATOR_NPM1100_DEFINE_ALL)