186 	int err;  in kingdisplay_panel_disable()  local
191 	err = mipi_dsi_dcs_set_display_off(kingdisplay->link);  in kingdisplay_panel_disable()
192 	if (err < 0)  in kingdisplay_panel_disable()
193 		dev_err(panel->dev, "failed to set display off: %d\n", err);  in kingdisplay_panel_disable()
203 	int err;  in kingdisplay_panel_unprepare()  local
208 	err = mipi_dsi_dcs_enter_sleep_mode(kingdisplay->link);  in kingdisplay_panel_unprepare()
209 	if (err < 0) {  in kingdisplay_panel_unprepare()
210 		dev_err(panel->dev, "failed to enter sleep mode: %d\n", err);  in kingdisplay_panel_unprepare()
211 		return err;  in kingdisplay_panel_unprepare()
219 	err = regulator_disable(kingdisplay->supply);  in kingdisplay_panel_unprepare()
220 	if (err < 0)  in kingdisplay_panel_unprepare()
221 		return err;  in kingdisplay_panel_unprepare()
231 	int err, regulator_err;  in kingdisplay_panel_prepare()  local
239 	err = regulator_enable(kingdisplay->supply);  in kingdisplay_panel_prepare()
240 	if (err < 0)  in kingdisplay_panel_prepare()
241 		return err;  in kingdisplay_panel_prepare()
252 		err = mipi_dsi_generic_write(kingdisplay->link, &init_code[i],  in kingdisplay_panel_prepare()
254 		if (err < 0) {  in kingdisplay_panel_prepare()
255 			dev_err(panel->dev, "failed write init cmds: %d\n", err);  in kingdisplay_panel_prepare()
260 	err = mipi_dsi_dcs_exit_sleep_mode(kingdisplay->link);  in kingdisplay_panel_prepare()
261 	if (err < 0) {  in kingdisplay_panel_prepare()
262 		dev_err(panel->dev, "failed to exit sleep mode: %d\n", err);  in kingdisplay_panel_prepare()
269 	err = mipi_dsi_dcs_set_display_on(kingdisplay->link);  in kingdisplay_panel_prepare()
270 	if (err < 0) {  in kingdisplay_panel_prepare()
271 		dev_err(panel->dev, "failed to set display on: %d\n", err);  in kingdisplay_panel_prepare()
289 	return err;  in kingdisplay_panel_prepare()
357 	int err;  in kingdisplay_panel_add()  local
366 		err = PTR_ERR(kingdisplay->enable_gpio);  in kingdisplay_panel_add()
367 		dev_dbg(dev, "failed to get enable gpio: %d\n", err);  in kingdisplay_panel_add()
374 	err = drm_panel_of_backlight(&kingdisplay->base);  in kingdisplay_panel_add()
375 	if (err)  in kingdisplay_panel_add()
376 		return err;  in kingdisplay_panel_add()
391 	int err;  in kingdisplay_panel_probe()  local
405 	err = kingdisplay_panel_add(kingdisplay);  in kingdisplay_panel_probe()
406 	if (err < 0)  in kingdisplay_panel_probe()
407 		return err;  in kingdisplay_panel_probe()
409 	err = mipi_dsi_attach(dsi);  in kingdisplay_panel_probe()
410 	if (err < 0) {  in kingdisplay_panel_probe()
412 		return err;  in kingdisplay_panel_probe()
421 	int err;  in kingdisplay_panel_remove()  local
423 	err = drm_panel_unprepare(&kingdisplay->base);  in kingdisplay_panel_remove()
424 	if (err < 0)  in kingdisplay_panel_remove()
425 		dev_err(&dsi->dev, "failed to unprepare panel: %d\n", err);  in kingdisplay_panel_remove()
427 	err = drm_panel_disable(&kingdisplay->base);  in kingdisplay_panel_remove()
428 	if (err < 0)  in kingdisplay_panel_remove()
429 		dev_err(&dsi->dev, "failed to disable panel: %d\n", err);  in kingdisplay_panel_remove()
431 	err = mipi_dsi_detach(dsi);  in kingdisplay_panel_remove()
432 	if (err < 0)  in kingdisplay_panel_remove()
433 		dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", err);  in kingdisplay_panel_remove()