25  * SSD1673, SSD1608, SSD1681, ILI3897 compatible EPD controller driver.
79 static inline int ssd16xx_write_cmd(struct ssd16xx_data *driver,  in ssd16xx_write_cmd()  argument
86 	gpio_pin_set(driver->dc, SSD16XX_DC_PIN, 1);  in ssd16xx_write_cmd()
87 	err = spi_write_dt(&driver->config->bus, &buf_set);  in ssd16xx_write_cmd()
95 		gpio_pin_set(driver->dc, SSD16XX_DC_PIN, 0);  in ssd16xx_write_cmd()
96 		err = spi_write_dt(&driver->config->bus, &buf_set);  in ssd16xx_write_cmd()
105 static inline void ssd16xx_busy_wait(struct ssd16xx_data *driver)  in ssd16xx_busy_wait()  argument
107 	int pin = gpio_pin_get(driver->busy, SSD16XX_BUSY_PIN);  in ssd16xx_busy_wait()
112 		pin = gpio_pin_get(driver->busy, SSD16XX_BUSY_PIN);  in ssd16xx_busy_wait()
143 static inline int ssd16xx_set_ram_param(struct ssd16xx_data *driver,  in ssd16xx_set_ram_param()  argument
152 	err = ssd16xx_write_cmd(driver, SSD16XX_CMD_RAM_XPOS_CTRL, tmp, len);  in ssd16xx_set_ram_param()
159 	err = ssd16xx_write_cmd(driver, SSD16XX_CMD_RAM_YPOS_CTRL, tmp,	len);  in ssd16xx_set_ram_param()
167 static inline int ssd16xx_set_ram_ptr(struct ssd16xx_data *driver,  in ssd16xx_set_ram_ptr()  argument
175 	err = ssd16xx_write_cmd(driver, SSD16XX_CMD_RAM_XPOS_CNTR, tmp, len);  in ssd16xx_set_ram_ptr()
181 	return ssd16xx_write_cmd(driver, SSD16XX_CMD_RAM_YPOS_CNTR, tmp, len);  in ssd16xx_set_ram_ptr()
184 static void ssd16xx_set_orientation_internall(struct ssd16xx_data *driver)  in ssd16xx_set_orientation_internall()  argument
188 	driver->scan_mode = SSD16XX_DATA_ENTRY_XIYDY;  in ssd16xx_set_orientation_internall()
190 	driver->scan_mode = SSD16XX_DATA_ENTRY_XDYIY;  in ssd16xx_set_orientation_internall()
206 	struct ssd16xx_data *driver = dev->data;  in ssd16xx_update_display()  local
209 	err = ssd16xx_write_cmd(driver, SSD16XX_CMD_UPDATE_CTRL2,  in ssd16xx_update_display()
210 				&driver->update_cmd, 1);  in ssd16xx_update_display()
215 	return ssd16xx_write_cmd(driver, SSD16XX_CMD_MASTER_ACTIVATION,  in ssd16xx_update_display()
224 	struct ssd16xx_data *driver = dev->data;  in ssd16xx_write()  local
272 	switch (driver->scan_mode) {  in ssd16xx_write()
291 	ssd16xx_busy_wait(driver);  in ssd16xx_write()
293 	err = ssd16xx_write_cmd(driver, SSD16XX_CMD_ENTRY_MODE,  in ssd16xx_write()
294 				&driver->scan_mode, sizeof(driver->scan_mode));  in ssd16xx_write()
299 	err = ssd16xx_set_ram_param(driver, x_start, x_end, y_start, y_end);  in ssd16xx_write()
304 	err = ssd16xx_set_ram_ptr(driver, x_start, y_start);  in ssd16xx_write()
309 	err = ssd16xx_write_cmd(driver, SSD16XX_CMD_WRITE_RAM, (uint8_t *)buf,  in ssd16xx_write()
383 	struct ssd16xx_data *driver = dev->data;  in ssd16xx_clear_cntlr_mem()  local
397 	if (ssd16xx_write_cmd(driver, SSD16XX_CMD_ENTRY_MODE, &scan_mode, 1)) {  in ssd16xx_clear_cntlr_mem()
401 	if (ssd16xx_set_ram_param(driver, SSD16XX_PANEL_FIRST_PAGE,  in ssd16xx_clear_cntlr_mem()
408 	if (ssd16xx_set_ram_ptr(driver, SSD16XX_PANEL_FIRST_PAGE,  in ssd16xx_clear_cntlr_mem()
416 		if (ssd16xx_write_cmd(driver, ram_cmd, clear_page,  in ssd16xx_clear_cntlr_mem()
431 	struct ssd16xx_data *driver = dev->data;  in ssd16xx_load_ws_from_otp()  local
442 	if (ssd16xx_write_cmd(driver,  in ssd16xx_load_ws_from_otp()
448 	driver->update_cmd |= SSD16XX_CTRL2_LOAD_LUT |  in ssd16xx_load_ws_from_otp()
458 	if (ssd16xx_write_cmd(driver, SSD16XX_CMD_UPDATE_CTRL2,  in ssd16xx_load_ws_from_otp()
463 	if (ssd16xx_write_cmd(driver, SSD16XX_CMD_MASTER_ACTIVATION,  in ssd16xx_load_ws_from_otp()
468 	ssd16xx_busy_wait(driver);  in ssd16xx_load_ws_from_otp()
472 	if (ssd16xx_write_cmd(driver, SSD16XX_CMD_TSENS_CTRL,  in ssd16xx_load_ws_from_otp()
478 	if (ssd16xx_write_cmd(driver, SSD16XX_CMD_UPDATE_CTRL2,  in ssd16xx_load_ws_from_otp()
483 	if (ssd16xx_write_cmd(driver, SSD16XX_CMD_MASTER_ACTIVATION,  in ssd16xx_load_ws_from_otp()
488 	ssd16xx_busy_wait(driver);  in ssd16xx_load_ws_from_otp()
490 	driver->update_cmd |= SSD16XX_CTRL2_LOAD_LUT;  in ssd16xx_load_ws_from_otp()
499 	struct ssd16xx_data *driver = dev->data;  in ssd16xx_load_ws_initial()  local
501 	if (ssd16xx_write_cmd(driver, SSD16XX_CMD_UPDATE_LUT,  in ssd16xx_load_ws_initial()
507 	ssd16xx_busy_wait(driver);  in ssd16xx_load_ws_initial()
518 	struct ssd16xx_data *driver = dev->data;  in ssd16xx_load_ws_default()  local
520 	if (ssd16xx_write_cmd(driver, SSD16XX_CMD_UPDATE_LUT,  in ssd16xx_load_ws_default()
526 	ssd16xx_busy_wait(driver);  in ssd16xx_load_ws_default()
537 	struct ssd16xx_data *driver = dev->data;  in ssd16xx_controller_init()  local
541 	gpio_pin_set(driver->reset, SSD16XX_RESET_PIN, 1);  in ssd16xx_controller_init()
543 	gpio_pin_set(driver->reset, SSD16XX_RESET_PIN, 0);  in ssd16xx_controller_init()
545 	ssd16xx_busy_wait(driver);  in ssd16xx_controller_init()
547 	err = ssd16xx_write_cmd(driver, SSD16XX_CMD_SW_RESET, NULL, 0);  in ssd16xx_controller_init()
551 	ssd16xx_busy_wait(driver);  in ssd16xx_controller_init()
555 	err = ssd16xx_write_cmd(driver, SSD16XX_CMD_GDO_CTRL, tmp, len);  in ssd16xx_controller_init()
561 	err = ssd16xx_write_cmd(driver, SSD16XX_CMD_SOFTSTART,  in ssd16xx_controller_init()
568 	err = ssd16xx_write_cmd(driver, SSD16XX_CMD_GDV_CTRL, ssd16xx_gdv,  in ssd16xx_controller_init()
574 	err = ssd16xx_write_cmd(driver, SSD16XX_CMD_SDV_CTRL, ssd16xx_sdv,  in ssd16xx_controller_init()
581 	err = ssd16xx_write_cmd(driver, SSD16XX_CMD_VCOM_VOLTAGE, tmp, 1);  in ssd16xx_controller_init()
587 	err = ssd16xx_write_cmd(driver, SSD16XX_CMD_DUMMY_LINE, tmp, 1);  in ssd16xx_controller_init()
593 	err = ssd16xx_write_cmd(driver, SSD16XX_CMD_GATE_LINE_WIDTH, tmp, 1);  in ssd16xx_controller_init()
599 	err = ssd16xx_write_cmd(driver, SSD16XX_CMD_BWF_CTRL, tmp, 1);  in ssd16xx_controller_init()
604 	ssd16xx_set_orientation_internall(driver);  in ssd16xx_controller_init()
605 	driver->update_cmd = (SSD16XX_CTRL2_ENABLE_CLK |  in ssd16xx_controller_init()
620 	ssd16xx_busy_wait(driver);  in ssd16xx_controller_init()
628 	ssd16xx_busy_wait(driver);  in ssd16xx_controller_init()
639 	struct ssd16xx_data *driver = dev->data;  in ssd16xx_init()  local
640 	const struct ssd16xx_config *config = driver->config;  in ssd16xx_init()
649 	driver->reset = device_get_binding(SSD16XX_RESET_CNTRL);  in ssd16xx_init()
650 	if (driver->reset == NULL) {  in ssd16xx_init()
655 	gpio_pin_configure(driver->reset, SSD16XX_RESET_PIN,  in ssd16xx_init()
658 	driver->dc = device_get_binding(SSD16XX_DC_CNTRL);  in ssd16xx_init()
659 	if (driver->dc == NULL) {  in ssd16xx_init()
664 	gpio_pin_configure(driver->dc, SSD16XX_DC_PIN,  in ssd16xx_init()
667 	driver->busy = device_get_binding(SSD16XX_BUSY_CNTRL);  in ssd16xx_init()
668 	if (driver->busy == NULL) {  in ssd16xx_init()
673 	gpio_pin_configure(driver->busy, SSD16XX_BUSY_PIN,  in ssd16xx_init()