5  * SPDX-License-Identifier: Apache-2.0
25 	/* Minimum transfer bits */
35 /* Expands to 1 if the node does not have the `write-only` property */
38 /* This macro will evaluate to 1 if any of the nodes with zephyr,mipi-dbi-spi
39  * lack a `write-only` property. The intention here is to allow the entire
45 /* Expands to 1 if the node does reflect the enum in `xfr-min-bits` property */
49 /* This macros will evaluate to 1 if any of the nodes with zephyr,mipi-dbi-spi
50  * have the `xfr-min-bits` property to corresponding enum value. The intention
52  * minimum transfer bits will be needed.
71 	const struct mipi_dbi_spi_config *config = dev->config;  in mipi_dbi_spi_write_helper_3wire()
72 	struct mipi_dbi_spi_data *data = dev->data;  in mipi_dbi_spi_write_helper_3wire()
85 	if ((dbi_config->config.operation & SPI_WORD_SIZE_MASK)  in mipi_dbi_spi_write_helper_3wire()
87 		return -ENOTSUP;  in mipi_dbi_spi_write_helper_3wire()
89 	buffer.buf = &data->spi_byte;  in mipi_dbi_spi_write_helper_3wire()
94 		data->spi_byte = cmd;  in mipi_dbi_spi_write_helper_3wire()
95 		ret = spi_write(config->spi_dev, &dbi_config->config, &buf_set);  in mipi_dbi_spi_write_helper_3wire()
102 		data->spi_byte = MIPI_DBI_DC_BIT | data_buf[i];  in mipi_dbi_spi_write_helper_3wire()
103 		ret = spi_write(config->spi_dev, &dbi_config->config, &buf_set);  in mipi_dbi_spi_write_helper_3wire()
120 	const struct mipi_dbi_spi_config *config = dev->config;  in mipi_dbi_spi_write_helper_4wire_8bit()
139 		gpio_pin_set_dt(&config->cmd_data, 0);  in mipi_dbi_spi_write_helper_4wire_8bit()
140 		ret = spi_write(config->spi_dev, &dbi_config->config, &buf_set);  in mipi_dbi_spi_write_helper_4wire_8bit()
151 		gpio_pin_set_dt(&config->cmd_data, 1);  in mipi_dbi_spi_write_helper_4wire_8bit()
152 		ret = spi_write(config->spi_dev, &dbi_config->config, &buf_set);  in mipi_dbi_spi_write_helper_4wire_8bit()
171 	const struct mipi_dbi_spi_config *config = dev->config;  in mipi_dbi_spi_write_helper_4wire_16bit()
183 	 * but send 16-bit blocks (with bit stuffing).  in mipi_dbi_spi_write_helper_4wire_16bit()
192 		gpio_pin_set_dt(&config->cmd_data, 0);  in mipi_dbi_spi_write_helper_4wire_16bit()
193 		ret = spi_write(config->spi_dev, &dbi_config->config,  in mipi_dbi_spi_write_helper_4wire_16bit()
201 			gpio_pin_set_dt(&config->cmd_data, 1);  in mipi_dbi_spi_write_helper_4wire_16bit()
208 			ret = spi_write(config->spi_dev, &dbi_config->config,  in mipi_dbi_spi_write_helper_4wire_16bit()
219 			gpio_pin_set_dt(&config->cmd_data, 1);  in mipi_dbi_spi_write_helper_4wire_16bit()
223 		if (len - stuffing > 0) {  in mipi_dbi_spi_write_helper_4wire_16bit()
225 			buffer.len = len - stuffing;  in mipi_dbi_spi_write_helper_4wire_16bit()
227 			ret = spi_write(config->spi_dev, &dbi_config->config,  in mipi_dbi_spi_write_helper_4wire_16bit()
235 		for (int i = len - stuffing; i < len; i++) {  in mipi_dbi_spi_write_helper_4wire_16bit()
240 			ret = spi_write(config->spi_dev, &dbi_config->config,  in mipi_dbi_spi_write_helper_4wire_16bit()
258 	const struct mipi_dbi_spi_config *config = dev->config;  in mipi_dbi_spi_write_helper()
259 	struct mipi_dbi_spi_data *data = dev->data;  in mipi_dbi_spi_write_helper()
262 	ret = k_mutex_lock(&data->lock, K_FOREVER);  in mipi_dbi_spi_write_helper()
267 	if (dbi_config->mode == MIPI_DBI_MODE_SPI_3WIRE &&  in mipi_dbi_spi_write_helper()
275 	if (dbi_config->mode == MIPI_DBI_MODE_SPI_4WIRE) {  in mipi_dbi_spi_write_helper()
278 		if (config->xfr_min_bits == MIPI_DBI_SPI_XFR_8BIT) {  in mipi_dbi_spi_write_helper()
288 		if (config->xfr_min_bits == MIPI_DBI_SPI_XFR_16BIT) {  in mipi_dbi_spi_write_helper()
300 	ret = -ENOTSUP;  in mipi_dbi_spi_write_helper()
303 	k_mutex_unlock(&data->lock);  in mipi_dbi_spi_write_helper()
325 					 framebuf, desc->buf_size);  in mipi_dbi_spi_write_display()
336 	const struct mipi_dbi_spi_config *config = dev->config;  in mipi_dbi_spi_read_helper_3wire()
337 	struct mipi_dbi_spi_data *data = dev->data;  in mipi_dbi_spi_read_helper_3wire()
352 	if ((dbi_config->config.operation & SPI_WORD_SIZE_MASK)  in mipi_dbi_spi_read_helper_3wire()
354 		return -ENOTSUP;  in mipi_dbi_spi_read_helper_3wire()
357 	memcpy(&tmp_config, &dbi_config->config, sizeof(tmp_config));  in mipi_dbi_spi_read_helper_3wire()
361 	buffer.buf = &data->spi_byte;  in mipi_dbi_spi_read_helper_3wire()
366 		data->spi_byte = cmds[i];  in mipi_dbi_spi_read_helper_3wire()
367 		ret = spi_write(config->spi_dev, &tmp_config, &buf_set);  in mipi_dbi_spi_read_helper_3wire()
376 	ret = spi_read(config->spi_dev, &dbi_config->config, &buf_set);  in mipi_dbi_spi_read_helper_3wire()
379 	spi_release(config->spi_dev, &tmp_config); /* Really necessary here? */  in mipi_dbi_spi_read_helper_3wire()
389 	const struct mipi_dbi_spi_config *config = dev->config;  in mipi_dbi_spi_read_helper_4wire()
406 	memcpy(&tmp_config, &dbi_config->config, sizeof(tmp_config));  in mipi_dbi_spi_read_helper_4wire()
414 		gpio_pin_set_dt(&config->cmd_data, 0);  in mipi_dbi_spi_read_helper_4wire()
416 		ret = spi_write(config->spi_dev, &tmp_config, &buf_set);  in mipi_dbi_spi_read_helper_4wire()
427 		gpio_pin_set_dt(&config->cmd_data, 1);  in mipi_dbi_spi_read_helper_4wire()
429 		ret = spi_read(config->spi_dev, &tmp_config, &buf_set);  in mipi_dbi_spi_read_helper_4wire()
436 	spi_release(config->spi_dev, &tmp_config);  in mipi_dbi_spi_read_helper_4wire()
445 	struct mipi_dbi_spi_data *data = dev->data;  in mipi_dbi_spi_command_read()
448 	ret = k_mutex_lock(&data->lock, K_FOREVER);  in mipi_dbi_spi_command_read()
452 	if (dbi_config->mode == MIPI_DBI_MODE_SPI_3WIRE &&  in mipi_dbi_spi_command_read()
460 	} else if (dbi_config->mode == MIPI_DBI_MODE_SPI_4WIRE) {  in mipi_dbi_spi_command_read()
469 		ret = -ENOTSUP;  in mipi_dbi_spi_command_read()
472 	k_mutex_unlock(&data->lock);  in mipi_dbi_spi_command_read()
480 	return spec->port != NULL;  in mipi_dbi_has_pin()
485 	const struct mipi_dbi_spi_config *config = dev->config;  in mipi_dbi_spi_reset()
488 	if (!mipi_dbi_has_pin(&config->reset)) {  in mipi_dbi_spi_reset()
489 		return -ENOTSUP;  in mipi_dbi_spi_reset()
492 	ret = gpio_pin_set_dt(&config->reset, 1);  in mipi_dbi_spi_reset()
497 	return gpio_pin_set_dt(&config->reset, 0);  in mipi_dbi_spi_reset()
503 	const struct mipi_dbi_spi_config *config = dev->config;  in mipi_dbi_spi_release()
505 	return spi_release(config->spi_dev, &dbi_config->config);  in mipi_dbi_spi_release()
510 	const struct mipi_dbi_spi_config *config = dev->config;  in mipi_dbi_spi_init()
511 	struct mipi_dbi_spi_data *data = dev->data;  in mipi_dbi_spi_init()
514 	if (!device_is_ready(config->spi_dev)) {  in mipi_dbi_spi_init()
516 		return -ENODEV;  in mipi_dbi_spi_init()
519 	if (mipi_dbi_has_pin(&config->cmd_data)) {  in mipi_dbi_spi_init()
520 		if (!gpio_is_ready_dt(&config->cmd_data)) {  in mipi_dbi_spi_init()
521 			return -ENODEV;  in mipi_dbi_spi_init()
523 		ret = gpio_pin_configure_dt(&config->cmd_data, GPIO_OUTPUT);  in mipi_dbi_spi_init()
530 	if (mipi_dbi_has_pin(&config->reset)) {  in mipi_dbi_spi_init()
531 		if (!gpio_is_ready_dt(&config->reset)) {  in mipi_dbi_spi_init()
532 			return -ENODEV;  in mipi_dbi_spi_init()
534 		ret = gpio_pin_configure_dt(&config->reset, GPIO_OUTPUT_INACTIVE);  in mipi_dbi_spi_init()
541 	k_mutex_init(&data->lock);  in mipi_dbi_spi_init()