blob: 528700630e97097919c3ecb748a67e7fc19c3a84 [file] [log] [blame]
/*
* Copyright (c) 2023 Nordic Semiconductor ASA
* SPDX-License-Identifier: Apache-2.0
*/
#define DT_DRV_COMPAT nordic_npm1300_led
#include <errno.h>
#include <zephyr/device.h>
#include <zephyr/drivers/led.h>
#include <zephyr/drivers/mfd/npm1300.h>
/* nPM1300 LED base address */
#define NPM_LED_BASE 0x0AU
/* nPM1300 LED register offsets */
#define NPM_LED_OFFSET_MODE 0x00U
#define NPM_LED_OFFSET_SET 0x03U
#define NPM_LED_OFFSET_CLR 0x04U
/* nPM1300 Channel counts */
#define NPM1300_LED_PINS 3U
/* nPM1300 LED modes */
#define NPM_LED_HOST 2U
struct led_npm1300_config {
const struct device *mfd;
uint8_t mode[NPM1300_LED_PINS];
};
static int led_npm1300_on(const struct device *dev, uint32_t led)
{
const struct led_npm1300_config *config = dev->config;
if (led >= NPM1300_LED_PINS) {
return -EINVAL;
}
if (config->mode[led] != NPM_LED_HOST) {
return -EPERM;
}
return mfd_npm1300_reg_write(config->mfd, NPM_LED_BASE, NPM_LED_OFFSET_SET + (led * 2U),
1U);
}
static int led_npm1300_off(const struct device *dev, uint32_t led)
{
const struct led_npm1300_config *config = dev->config;
if (led >= NPM1300_LED_PINS) {
return -EINVAL;
}
if (config->mode[led] != NPM_LED_HOST) {
return -EPERM;
}
return mfd_npm1300_reg_write(config->mfd, NPM_LED_BASE, NPM_LED_OFFSET_CLR + (led * 2U),
1U);
}
static const struct led_driver_api led_npm1300_api = {
.on = led_npm1300_on,
.off = led_npm1300_off,
};
static int led_npm1300_init(const struct device *dev)
{
const struct led_npm1300_config *config = dev->config;
if (!device_is_ready(config->mfd)) {
return -ENODEV;
}
for (uint8_t led = 0U; led < NPM1300_LED_PINS; led++) {
int ret = mfd_npm1300_reg_write(config->mfd, NPM_LED_BASE,
NPM_LED_OFFSET_MODE + led, config->mode[led]);
if (ret < 0) {
return ret;
}
}
return 0;
}
#define LED_NPM1300_DEFINE(n) \
static const struct led_npm1300_config led_npm1300_config##n = { \
.mfd = DEVICE_DT_GET(DT_INST_PARENT(n)), \
.mode = {DT_INST_ENUM_IDX(n, nordic_led0_mode), \
DT_INST_ENUM_IDX(n, nordic_led1_mode), \
DT_INST_ENUM_IDX(n, nordic_led2_mode)}}; \
\
DEVICE_DT_INST_DEFINE(n, &led_npm1300_init, NULL, NULL, &led_npm1300_config##n, \
POST_KERNEL, CONFIG_LED_INIT_PRIORITY, &led_npm1300_api);
DT_INST_FOREACH_STATUS_OKAY(LED_NPM1300_DEFINE)