4  * SPDX-License-Identifier: Apache-2.0
13 #include <zephyr/dt-bindings/led/led.h>
57 /** GS reference clock edge select bit for OUTXn on-off timing control in FC data */
60 /** Constant-current output enable bit in FC data (0 = output control enabled, 1 = blank). */
157 		temp = pixel_data->r;  in tlc5971_map_color()
160 		temp = pixel_data->g;  in tlc5971_map_color()
163 		temp = pixel_data->b;  in tlc5971_map_color()
174  * @brief serialize control data and pixel data for device daisy chain
180  * @param pixels pixel RGB data for daisy chain
181  * @param num_pixels number of pixels in daisy chain
186 	const struct tlc5971_config *cfg = dev->config;  in tlc5971_fill_data_buffer()
187 	struct tlc5971_data *data = dev->data;  in tlc5971_fill_data_buffer()
188 	uint8_t *data_buffer = data->data_buffer;  in tlc5971_fill_data_buffer()
192 	 * tlc5971 device order is reversed as the rgb data for the last device in the daisy chain  in tlc5971_fill_data_buffer()
195 	for (int device = (num_pixels / TLC5971_PIXELS_PER_DEVICE) - 1; device >= 0; device--) {  in tlc5971_fill_data_buffer()
201 		data_buffer[count++] = tlc5971_data_byte27(data->control_data);  in tlc5971_fill_data_buffer()
202 		data_buffer[count++] = tlc5971_data_byte26(data->control_data, data->gbc_color_1);  in tlc5971_fill_data_buffer()
203 		data_buffer[count++] = tlc5971_data_byte25(data->gbc_color_1, data->gbc_color_2);  in tlc5971_fill_data_buffer()
204 		data_buffer[count++] = tlc5971_data_byte24(data->gbc_color_2, data->gbc_color_3);  in tlc5971_fill_data_buffer()
206 		for (int pixel = (TLC5971_PIXELS_PER_DEVICE - 1); pixel >= 0; pixel--) {  in tlc5971_fill_data_buffer()
215 			for (int color = 0; color < cfg->num_colors; color++) {  in tlc5971_fill_data_buffer()
217 					tlc5971_map_color(cfg->color_mapping[color], pixel_data);  in tlc5971_fill_data_buffer()
233 	const struct tlc5971_config *cfg = dev->config;  in tlc5971_transmit_data()
234 	struct tlc5971_data *data = dev->data;  in tlc5971_transmit_data()
237 		.buf = data->data_buffer,  in tlc5971_transmit_data()
246 	return spi_write_dt(&cfg->bus, &tx);  in tlc5971_transmit_data()
258 	const struct tlc5971_config *cfg = dev->config;  in tlc5971_length()
260 	return (size_t)cfg->num_pixels;  in tlc5971_length()
265 	const struct tlc5971_config *cfg = dev->config;  in tlc5971_set_global_brightness()
266 	struct tlc5971_data *data = dev->data;  in tlc5971_set_global_brightness()
267 	int res = -EINVAL;  in tlc5971_set_global_brightness()
272 		data->gbc_color_1 = tlc5971_map_color(cfg->color_mapping[0], &pixel);  in tlc5971_set_global_brightness()
273 		data->gbc_color_2 = tlc5971_map_color(cfg->color_mapping[1], &pixel);  in tlc5971_set_global_brightness()
274 		data->gbc_color_3 = tlc5971_map_color(cfg->color_mapping[2], &pixel);  in tlc5971_set_global_brightness()
283 	const struct tlc5971_config *cfg = dev->config;  in tlc5971_init()
284 	struct tlc5971_data *data = dev->data;  in tlc5971_init()
286 	if (!spi_is_ready_dt(&cfg->bus)) {  in tlc5971_init()
287 		LOG_ERR("%s: SPI device %s not ready", dev->name, cfg->bus.bus->name);  in tlc5971_init()
288 		return -ENODEV;  in tlc5971_init()
291 	if ((cfg->num_pixels % TLC5971_PIXELS_PER_DEVICE) != 0) {  in tlc5971_init()
292 		LOG_ERR("%s: chain length must be multiple of 4", dev->name);  in tlc5971_init()
293 		return -EINVAL;  in tlc5971_init()
296 	if (cfg->num_colors != TLC5971_NUMBER_OF_COLORS) {  in tlc5971_init()
297 		LOG_ERR("%s: the tlc5971 only supports %i colors", dev->name,  in tlc5971_init()
299 		return -EINVAL;  in tlc5971_init()
302 	for (int i = 0; i < cfg->num_colors; i++) {  in tlc5971_init()
303 		switch (cfg->color_mapping[i]) {  in tlc5971_init()
309 			LOG_ERR("%s: invalid color mapping", dev->name);  in tlc5971_init()
310 			return -EINVAL;  in tlc5971_init()
319 	data->control_data = TLC5971_BYTE27_CTRL_BIT_OUTTMG | TLC5971_BYTE26_CTRL_BIT_DSPRPT |  in tlc5971_init()