b3fdb7477b
The setting of initial state in handled by the common driver, which calls the enable function for any regulator that has regulator-boot-on set, and is not already enabled. Signed-off-by: Andy Sinclair <andy.sinclair@nordicsemi.no>
123 lines
3.2 KiB
C
123 lines
3.2 KiB
C
/*
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* Copyright 2019-2020 Peter Bigot Consulting, LLC
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* Copyright 2022 Nordic Semiconductor ASA
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* Copyright 2023 EPAM Systems
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* SPDX-License-Identifier: Apache-2.0
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*/
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#define DT_DRV_COMPAT regulator_fixed
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#include <stdint.h>
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#include <zephyr/drivers/regulator.h>
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#include <zephyr/drivers/gpio.h>
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#include <zephyr/logging/log.h>
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LOG_MODULE_REGISTER(regulator_fixed, CONFIG_REGULATOR_LOG_LEVEL);
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struct regulator_fixed_config {
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struct regulator_common_config common;
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struct gpio_dt_spec enable;
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};
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struct regulator_fixed_data {
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struct regulator_common_data common;
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};
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static int regulator_fixed_enable(const struct device *dev)
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{
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const struct regulator_fixed_config *cfg = dev->config;
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int ret;
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if (!cfg->enable.port) {
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return -ENOTSUP;
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}
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ret = gpio_pin_set_dt(&cfg->enable, 1);
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if (ret < 0) {
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return ret;
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}
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return 0;
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}
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static int regulator_fixed_disable(const struct device *dev)
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{
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const struct regulator_fixed_config *cfg = dev->config;
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if (!cfg->enable.port) {
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return -ENOTSUP;
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}
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return gpio_pin_set_dt(&cfg->enable, 0);
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}
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static unsigned int regulator_fixed_count_voltages(const struct device *dev)
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{
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int32_t min_uv;
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return (regulator_common_get_min_voltage(dev, &min_uv) < 0) ? 0U : 1U;
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}
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static int regulator_fixed_list_voltage(const struct device *dev,
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unsigned int idx,
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int32_t *volt_uv)
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{
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if (idx != 0) {
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return -EINVAL;
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}
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if (regulator_common_get_min_voltage(dev, volt_uv) < 0) {
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return -EINVAL;
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}
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return 0;
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}
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static const struct regulator_driver_api regulator_fixed_api = {
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.enable = regulator_fixed_enable,
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.disable = regulator_fixed_disable,
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.count_voltages = regulator_fixed_count_voltages,
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.list_voltage = regulator_fixed_list_voltage,
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};
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static int regulator_fixed_init(const struct device *dev)
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{
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const struct regulator_fixed_config *cfg = dev->config;
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regulator_common_data_init(dev);
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if (cfg->enable.port != NULL) {
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if (!gpio_is_ready_dt(&cfg->enable)) {
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LOG_ERR("GPIO port: %s not ready", cfg->enable.port->name);
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return -ENODEV;
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}
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int ret = gpio_pin_configure_dt(&cfg->enable, GPIO_OUTPUT);
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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 regulator_common_init(dev, false);
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}
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#define REGULATOR_FIXED_DEFINE(inst) \
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BUILD_ASSERT(DT_INST_PROP_OR(inst, regulator_min_microvolt, 0) == \
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DT_INST_PROP_OR(inst, regulator_max_microvolt, 0), \
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"Regulator requires fixed voltages"); \
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static struct regulator_fixed_data data##inst; \
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\
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static const struct regulator_fixed_config config##inst = { \
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.common = REGULATOR_DT_INST_COMMON_CONFIG_INIT(inst), \
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.enable = GPIO_DT_SPEC_INST_GET_OR(inst, enable_gpios, {0}), \
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}; \
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\
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DEVICE_DT_INST_DEFINE(inst, regulator_fixed_init, NULL, &data##inst, \
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&config##inst, POST_KERNEL, \
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CONFIG_REGULATOR_FIXED_INIT_PRIORITY, \
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®ulator_fixed_api);
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DT_INST_FOREACH_STATUS_OKAY(REGULATOR_FIXED_DEFINE)
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