5  * SPDX-License-Identifier: Apache-2.0
10 /* Include esp-idf headers first to avoid redefining BIT() macro */
11 #include <hal/ledc_hal.h>
12 #include <hal/ledc_types.h>
37 	ledc_hal_context_t hal;  member
64 		(struct pwm_ledc_esp32_config *) dev->config;  in get_channel_config()
66 	for (uint8_t i = 0; i < config->channel_len; i++) {  in get_channel_config()
67 		if (config->channel_config[i].idx == channel_id) {  in get_channel_config()
68 			return &config->channel_config[i];  in get_channel_config()
76 	struct pwm_ledc_esp32_data *data = (struct pwm_ledc_esp32_data *const)(dev)->data;  in pwm_led_esp32_low_speed_update()
79 		ledc_hal_ls_channel_update(&data->hal, channel);  in pwm_led_esp32_low_speed_update()
85 	struct pwm_ledc_esp32_data *data = (struct pwm_ledc_esp32_data *const)(dev)->data;  in pwm_led_esp32_update_duty()
87 	ledc_hal_set_sig_out_en(&data->hal, channel, true);  in pwm_led_esp32_update_duty()
88 	ledc_hal_set_duty_start(&data->hal, channel, true);  in pwm_led_esp32_update_duty()
96 	struct pwm_ledc_esp32_data *data = (struct pwm_ledc_esp32_data *const)(dev)->data;  in pwm_led_esp32_duty_set()
98 	ledc_hal_set_hpoint(&data->hal, channel->channel_num, 0);  in pwm_led_esp32_duty_set()
99 	ledc_hal_set_duty_int_part(&data->hal, channel->channel_num, channel->duty_val);  in pwm_led_esp32_duty_set()
100 	ledc_hal_set_duty_direction(&data->hal, channel->channel_num, 1);  in pwm_led_esp32_duty_set()
101 	ledc_hal_set_duty_num(&data->hal, channel->channel_num, 1);  in pwm_led_esp32_duty_set()
102 	ledc_hal_set_duty_cycle(&data->hal, channel->channel_num, 1);  in pwm_led_esp32_duty_set()
103 	ledc_hal_set_duty_scale(&data->hal, channel->channel_num, 0);  in pwm_led_esp32_duty_set()
104 	pwm_led_esp32_low_speed_update(dev, channel->speed_mode, channel->channel_num);  in pwm_led_esp32_duty_set()
105 	pwm_led_esp32_update_duty(dev, channel->speed_mode, channel->channel_num);  in pwm_led_esp32_duty_set()
111 	struct pwm_ledc_esp32_config *config = (struct pwm_ledc_esp32_config *) dev->config;  in pwm_led_esp32_configure_pinctrl()
113 	ret = pinctrl_apply_state(config->pincfg, PINCTRL_STATE_DEFAULT);  in pwm_led_esp32_configure_pinctrl()
124 	struct pwm_ledc_esp32_data *data = (struct pwm_ledc_esp32_data *const)(dev)->data;  in pwm_led_esp32_bind_channel_timer()
126 	ledc_hal_bind_channel_timer(&data->hal, channel->channel_num, channel->timer_num);  in pwm_led_esp32_bind_channel_timer()
128 	pwm_led_esp32_low_speed_update(dev, channel->speed_mode, channel->channel_num);  in pwm_led_esp32_bind_channel_timer()
138 	uint64_t clock_freq = channel->clock_src == LEDC_APB_CLK ? APB_CLK_FREQ : REF_CLK_FREQ;  in pwm_led_esp32_calculate_max_resolution()
142 	uint32_t max_precision_n = clock_freq/channel->freq;  in pwm_led_esp32_calculate_max_resolution()
147 			channel->resolution =  i;  in pwm_led_esp32_calculate_max_resolution()
151 	return -EINVAL;  in pwm_led_esp32_calculate_max_resolution()
158 	 * Calculate max resolution based on the given frequency and the pwm clock.  in pwm_led_esp32_timer_config()
177 	channel->clock_src = LEDC_APB_CLK;  in pwm_led_esp32_timer_config()
184 	channel->clock_src = LEDC_REF_TICK;  in pwm_led_esp32_timer_config()
191 	 * ESP32 - S2,S3 and C3 variants have only 14 bits counter.  in pwm_led_esp32_timer_config()
199 	channel->resolution = SOC_LEDC_TIMER_BIT_WIDTH;  in pwm_led_esp32_timer_config()
207 	uint32_t precision = (0x1 << channel->resolution);  in pwm_led_esp32_timer_set()
208 	struct pwm_ledc_esp32_data *data = (struct pwm_ledc_esp32_data *const)(dev)->data;  in pwm_led_esp32_timer_set()
210 	__ASSERT_NO_MSG(channel->freq > 0);  in pwm_led_esp32_timer_set()
212 	switch (channel->clock_src) {  in pwm_led_esp32_timer_set()
219 		prescaler = ((uint64_t) APB_CLK_FREQ << 8) / channel->freq / precision;  in pwm_led_esp32_timer_set()
224 		prescaler = ((uint64_t) SCLK_CLK_FREQ << 8) / channel->freq / precision;  in pwm_led_esp32_timer_set()
229 		prescaler = ((uint64_t) REF_CLK_FREQ << 8) / channel->freq / precision;  in pwm_led_esp32_timer_set()
233 		LOG_ERR("Invalid clock source (%d)", channel->clock_src);  in pwm_led_esp32_timer_set()
234 		return -EINVAL;  in pwm_led_esp32_timer_set()
239 		return -EINVAL;  in pwm_led_esp32_timer_set()
242 	if (channel->speed_mode == LEDC_LOW_SPEED_MODE) {  in pwm_led_esp32_timer_set()
243 		ledc_hal_set_slow_clk_sel(&data->hal, channel->clock_src);  in pwm_led_esp32_timer_set()
246 	ledc_hal_set_clock_divider(&data->hal, channel->timer_num, prescaler);  in pwm_led_esp32_timer_set()
247 	ledc_hal_set_duty_resolution(&data->hal, channel->timer_num, channel->resolution);  in pwm_led_esp32_timer_set()
248 	ledc_hal_set_clock_source(&data->hal, channel->timer_num, channel->clock_src);  in pwm_led_esp32_timer_set()
250 	if (channel->speed_mode == LEDC_LOW_SPEED_MODE) {  in pwm_led_esp32_timer_set()
251 		ledc_hal_ls_timer_update(&data->hal, channel->timer_num);  in pwm_led_esp32_timer_set()
255 	ledc_hal_timer_rst(&data->hal, channel->timer_num);  in pwm_led_esp32_timer_set()
267 		return -EINVAL;  in pwm_led_esp32_get_cycles_per_sec()
271 	*cycles = channel->clock_src == LEDC_APB_CLK ? APB_CLK_FREQ : REF_CLK_FREQ;  in pwm_led_esp32_get_cycles_per_sec()
285 	struct pwm_ledc_esp32_data *data = (struct pwm_ledc_esp32_data *const)(dev)->data;  in pwm_led_esp32_set_cycles()
290 		return -EINVAL;  in pwm_led_esp32_set_cycles()
299 	channel->freq = (uint32_t) (clk_freq/period_cycles);  in pwm_led_esp32_set_cycles()
300 	if (!channel->freq) {  in pwm_led_esp32_set_cycles()
301 		channel->freq = 1;  in pwm_led_esp32_set_cycles()
304 	k_sem_take(&data->cmd_sem, K_FOREVER);  in pwm_led_esp32_set_cycles()
306 	ledc_hal_init(&data->hal, channel->speed_mode);  in pwm_led_esp32_set_cycles()
310 		k_sem_give(&data->cmd_sem);  in pwm_led_esp32_set_cycles()
316 		k_sem_give(&data->cmd_sem);  in pwm_led_esp32_set_cycles()
326 	channel->duty_val = (uint32_t)((double) (1 << channel->resolution) * duty_cycle);  in pwm_led_esp32_set_cycles()
332 		k_sem_give(&data->cmd_sem);  in pwm_led_esp32_set_cycles()
336 	k_sem_give(&data->cmd_sem);  in pwm_led_esp32_set_cycles()
344 	const struct pwm_ledc_esp32_config *config = dev->config;  in pwm_led_esp32_init()
346 	if (!device_is_ready(config->clock_dev)) {  in pwm_led_esp32_init()
348 		return -ENODEV;  in pwm_led_esp32_init()
352 	clock_control_on(config->clock_dev, config->clock_subsys);  in pwm_led_esp32_init()
388 	.hal = {