8c73db666c
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>
138 lines
3.9 KiB
C
138 lines
3.9 KiB
C
/*
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* Copyright (c) 2023 Nordic Semiconductor ASA
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* SPDX-License-Identifier: Apache-2.0
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*/
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#define DT_DRV_COMPAT nordic_npm1100
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#include <errno.h>
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#include <zephyr/drivers/gpio.h>
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#include <zephyr/drivers/regulator.h>
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#include <zephyr/dt-bindings/regulator/npm1100.h>
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struct regulator_npm1100_pconfig {
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struct gpio_dt_spec iset;
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};
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struct regulator_npm1100_config {
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struct regulator_common_config common;
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struct gpio_dt_spec mode;
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};
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struct regulator_npm1100_data {
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struct regulator_common_data data;
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};
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static int regulator_npm1100_set_mode(const struct device *dev,
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regulator_mode_t mode)
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{
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const struct regulator_npm1100_config *config = dev->config;
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if ((config->mode.port == NULL) || (mode > NPM1100_MODE_PWM)) {
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return -ENOTSUP;
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}
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return gpio_pin_set_dt(&config->mode,
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mode == NPM1100_MODE_AUTO ? 0 : 1);
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}
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static int regulator_npm1100_get_mode(const struct device *dev,
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regulator_mode_t *mode)
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{
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const struct regulator_npm1100_config *config = dev->config;
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int ret;
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if (config->mode.port == NULL) {
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return -ENOTSUP;
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}
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ret = gpio_pin_get_dt(&config->mode);
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if (ret < 0) {
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return ret;
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}
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*mode = (ret == 0) ? NPM1100_MODE_AUTO : NPM1100_MODE_PWM;
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return 0;
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}
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static int regulator_npm1100_init(const struct device *dev)
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{
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const struct regulator_npm1100_config *config = dev->config;
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int ret;
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if (config->mode.port != NULL) {
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if (!gpio_is_ready_dt(&config->mode)) {
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return -ENODEV;
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}
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ret = gpio_pin_configure_dt(&config->mode,
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GPIO_INPUT | GPIO_OUTPUT_INACTIVE);
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if (ret < 0) {
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return ret;
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}
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}
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regulator_common_data_init(dev);
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return regulator_common_init(dev, true);
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}
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static int regulator_npm1100_common_init(const struct device *dev)
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{
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const struct regulator_npm1100_pconfig *config = dev->config;
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if (config->iset.port != NULL) {
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int ret;
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if (!gpio_is_ready_dt(&config->iset)) {
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return -ENODEV;
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}
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ret = gpio_pin_configure_dt(&config->iset,
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GPIO_OUTPUT_INACTIVE);
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if (ret < 0) {
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return ret;
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}
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}
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return 0;
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}
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static const struct regulator_driver_api api = {
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.set_mode = regulator_npm1100_set_mode,
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.get_mode = regulator_npm1100_get_mode,
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};
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#define REGULATOR_NPM1100_DEFINE_BUCK(node_id, id) \
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static struct regulator_npm1100_data data_##id; \
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\
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static const struct regulator_npm1100_config config_##id = { \
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.common = REGULATOR_DT_COMMON_CONFIG_INIT(node_id), \
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.mode = GPIO_DT_SPEC_GET_OR(node_id, nordic_mode_gpios, {}), \
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}; \
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\
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DEVICE_DT_DEFINE(node_id, regulator_npm1100_init, NULL, &data_##id, \
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&config_##id, POST_KERNEL, \
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CONFIG_REGULATOR_NPM1100_INIT_PRIORITY, &api);
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#define REGULATOR_NPM1100_DEFINE_BUCK_COND(inst) \
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COND_CODE_1(DT_NODE_EXISTS(DT_INST_CHILD(inst, buck)), \
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(REGULATOR_NPM1100_DEFINE_BUCK(DT_INST_CHILD(inst, buck), \
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buck##inst)), \
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())
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#define REGULATOR_NPM1100_DEFINE_ALL(inst) \
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static const struct regulator_npm1100_pconfig config_##inst = { \
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.iset = GPIO_DT_SPEC_INST_GET_OR(inst, nordic_iset_gpios, {}), \
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}; \
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\
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DEVICE_DT_INST_DEFINE(inst, regulator_npm1100_common_init, NULL, NULL, \
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&config_##inst, POST_KERNEL, \
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CONFIG_REGULATOR_NPM1100_INIT_PRIORITY, NULL); \
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\
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REGULATOR_NPM1100_DEFINE_BUCK_COND(inst)
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DT_INST_FOREACH_STATUS_OKAY(REGULATOR_NPM1100_DEFINE_ALL)
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