101 lines
2.6 KiB
C
101 lines
2.6 KiB
C
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/*
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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_npm1300_led
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#include <errno.h>
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#include <zephyr/device.h>
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#include <zephyr/drivers/led.h>
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#include <zephyr/drivers/mfd/npm1300.h>
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/* nPM1300 LED base address */
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#define NPM_LED_BASE 0x0AU
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/* nPM1300 LED register offsets */
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#define NPM_LED_OFFSET_MODE 0x00U
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#define NPM_LED_OFFSET_SET 0x03U
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#define NPM_LED_OFFSET_CLR 0x04U
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/* nPM1300 Channel counts */
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#define NPM1300_LED_PINS 3U
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/* nPM1300 LED modes */
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#define NPM_LED_HOST 2U
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struct led_npm1300_config {
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const struct device *mfd;
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uint8_t mode[NPM1300_LED_PINS];
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};
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static int led_npm1300_on(const struct device *dev, uint32_t led)
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{
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const struct led_npm1300_config *config = dev->config;
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if (led >= NPM1300_LED_PINS) {
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return -EINVAL;
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}
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if (config->mode[led] != NPM_LED_HOST) {
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return -EPERM;
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}
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return mfd_npm1300_reg_write(config->mfd, NPM_LED_BASE, NPM_LED_OFFSET_SET + (led * 2U),
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1U);
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}
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static int led_npm1300_off(const struct device *dev, uint32_t led)
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{
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const struct led_npm1300_config *config = dev->config;
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if (led >= NPM1300_LED_PINS) {
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return -EINVAL;
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}
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if (config->mode[led] != NPM_LED_HOST) {
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return -EPERM;
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}
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return mfd_npm1300_reg_write(config->mfd, NPM_LED_BASE, NPM_LED_OFFSET_CLR + (led * 2U),
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1U);
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}
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static const struct led_driver_api led_npm1300_api = {
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.on = led_npm1300_on,
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.off = led_npm1300_off,
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};
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static int led_npm1300_init(const struct device *dev)
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{
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const struct led_npm1300_config *config = dev->config;
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if (!device_is_ready(config->mfd)) {
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return -ENODEV;
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}
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for (uint8_t led = 0U; led < NPM1300_LED_PINS; led++) {
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int ret = mfd_npm1300_reg_write(config->mfd, NPM_LED_BASE,
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NPM_LED_OFFSET_MODE + led, config->mode[led]);
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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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#define LED_NPM1300_DEFINE(n) \
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static const struct led_npm1300_config led_npm1300_config##n = { \
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.mfd = DEVICE_DT_GET(DT_INST_PARENT(n)), \
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.mode = {DT_INST_ENUM_IDX(n, nordic_led0_mode), \
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DT_INST_ENUM_IDX(n, nordic_led1_mode), \
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DT_INST_ENUM_IDX(n, nordic_led2_mode)}}; \
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\
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DEVICE_DT_INST_DEFINE(n, &led_npm1300_init, NULL, NULL, &led_npm1300_config##n, \
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POST_KERNEL, CONFIG_LED_INIT_PRIORITY, &led_npm1300_api);
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DT_INST_FOREACH_STATUS_OKAY(LED_NPM1300_DEFINE)
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