103 	int ret;  in acx424akp_set_brightness()  local
113 	ret = mipi_dsi_dcs_write(dsi, MIPI_DCS_SET_DISPLAY_BRIGHTNESS,  in acx424akp_set_brightness()
115 	if (ret < 0) {  in acx424akp_set_brightness()
116 		dev_err(acx->dev, "failed to set display PWM ratio (%d)\n", ret);  in acx424akp_set_brightness()
117 		return ret;  in acx424akp_set_brightness()
130 	ret = mipi_dsi_dcs_write(dsi, 0xf3, &par, 1);  in acx424akp_set_brightness()
131 	if (ret < 0) {  in acx424akp_set_brightness()
132 		dev_err(acx->dev, "failed to unlock CMD 2 (%d)\n", ret);  in acx424akp_set_brightness()
133 		return ret;  in acx424akp_set_brightness()
136 	ret = mipi_dsi_dcs_write(dsi, 0x00, &par, 1);  in acx424akp_set_brightness()
137 	if (ret < 0) {  in acx424akp_set_brightness()
138 		dev_err(acx->dev, "failed to enter page 1 (%d)\n", ret);  in acx424akp_set_brightness()
139 		return ret;  in acx424akp_set_brightness()
142 	ret = mipi_dsi_dcs_write(dsi, 0x7d, &par, 1);  in acx424akp_set_brightness()
143 	if (ret < 0) {  in acx424akp_set_brightness()
144 		dev_err(acx->dev, "failed to disable MTP reload (%d)\n", ret);  in acx424akp_set_brightness()
145 		return ret;  in acx424akp_set_brightness()
147 	ret = mipi_dsi_dcs_write(dsi, 0x22, &pwm_div, 1);  in acx424akp_set_brightness()
148 	if (ret < 0) {  in acx424akp_set_brightness()
149 		dev_err(acx->dev, "failed to set PWM divisor (%d)\n", ret);  in acx424akp_set_brightness()
150 		return ret;  in acx424akp_set_brightness()
153 	ret = mipi_dsi_dcs_write(dsi, 0x7f, &par, 1);  in acx424akp_set_brightness()
154 	if (ret < 0) {  in acx424akp_set_brightness()
155 		dev_err(acx->dev, "failed to lock CMD 2 (%d)\n", ret);  in acx424akp_set_brightness()
156 		return ret;  in acx424akp_set_brightness()
161 	ret = mipi_dsi_dcs_write(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY,  in acx424akp_set_brightness()
163 	if (ret < 0) {  in acx424akp_set_brightness()
164 		dev_err(acx->dev, "failed to enable display backlight (%d)\n", ret);  in acx424akp_set_brightness()
165 		return ret;  in acx424akp_set_brightness()
180 	int ret;  in acx424akp_read_id()  local
182 	ret = mipi_dsi_dcs_read(dsi, ACX424_DCS_READ_ID1, &vendor, 1);  in acx424akp_read_id()
183 	if (ret < 0) {  in acx424akp_read_id()
185 		return ret;  in acx424akp_read_id()
187 	ret = mipi_dsi_dcs_read(dsi, ACX424_DCS_READ_ID2, &version, 1);  in acx424akp_read_id()
188 	if (ret < 0) {  in acx424akp_read_id()
190 		return ret;  in acx424akp_read_id()
192 	ret = mipi_dsi_dcs_read(dsi, ACX424_DCS_READ_ID3, &panel, 1);  in acx424akp_read_id()
193 	if (ret < 0) {  in acx424akp_read_id()
195 		return ret;  in acx424akp_read_id()
222 	int ret;  in acx424akp_power_on()  local
224 	ret = regulator_enable(acx->supply);  in acx424akp_power_on()
225 	if (ret) {  in acx424akp_power_on()
226 		dev_err(acx->dev, "failed to enable supply (%d)\n", ret);  in acx424akp_power_on()
227 		return ret;  in acx424akp_power_on()
254 	int ret;  in acx424akp_prepare()  local
256 	ret = acx424akp_power_on(acx);  in acx424akp_prepare()
257 	if (ret)  in acx424akp_prepare()
258 		return ret;  in acx424akp_prepare()
260 	ret = acx424akp_read_id(acx);  in acx424akp_prepare()
261 	if (ret) {  in acx424akp_prepare()
262 		dev_err(acx->dev, "failed to read panel ID (%d)\n", ret);  in acx424akp_prepare()
267 	ret = mipi_dsi_dcs_set_tear_on(dsi,  in acx424akp_prepare()
269 	if (ret) {  in acx424akp_prepare()
270 		dev_err(acx->dev, "failed to enable vblank TE (%d)\n", ret);  in acx424akp_prepare()
284 	ret = mipi_dsi_dcs_write(dsi, ACX424_DCS_SET_MDDI,  in acx424akp_prepare()
286 	if (ret < 0) {  in acx424akp_prepare()
287 		dev_err(acx->dev, "failed to set MDDI (%d)\n", ret);  in acx424akp_prepare()
292 	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);  in acx424akp_prepare()
293 	if (ret) {  in acx424akp_prepare()
294 		dev_err(acx->dev, "failed to exit sleep mode (%d)\n", ret);  in acx424akp_prepare()
299 	ret = mipi_dsi_dcs_set_display_on(dsi);  in acx424akp_prepare()
300 	if (ret) {  in acx424akp_prepare()
301 		dev_err(acx->dev, "failed to turn display on (%d)\n", ret);  in acx424akp_prepare()
306 		ret = mipi_dsi_turn_on_peripheral(dsi);  in acx424akp_prepare()
307 		if (ret) {  in acx424akp_prepare()
319 	return ret;  in acx424akp_prepare()
327 	int ret;  in acx424akp_unprepare()  local
331 	ret = mipi_dsi_dcs_write(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY,  in acx424akp_unprepare()
333 	if (ret) {  in acx424akp_unprepare()
334 		dev_err(acx->dev, "failed to disable display backlight (%d)\n", ret);  in acx424akp_unprepare()
335 		return ret;  in acx424akp_unprepare()
338 	ret = mipi_dsi_dcs_set_display_off(dsi);  in acx424akp_unprepare()
339 	if (ret) {  in acx424akp_unprepare()
340 		dev_err(acx->dev, "failed to turn display off (%d)\n", ret);  in acx424akp_unprepare()
341 		return ret;  in acx424akp_unprepare()
345 	ret = mipi_dsi_dcs_enter_sleep_mode(dsi);  in acx424akp_unprepare()
346 	if (ret) {  in acx424akp_unprepare()
347 		dev_err(acx->dev, "failed to enter sleep mode (%d)\n", ret);  in acx424akp_unprepare()
348 		return ret;  in acx424akp_unprepare()
423 	int ret;  in acx424akp_probe()  local
462 		ret = PTR_ERR(acx->reset_gpio);  in acx424akp_probe()
463 		if (ret != -EPROBE_DEFER)  in acx424akp_probe()
464 			dev_err(dev, "failed to request GPIO (%d)\n", ret);  in acx424akp_probe()
465 		return ret;  in acx424akp_probe()
483 	ret = mipi_dsi_attach(dsi);  in acx424akp_probe()
484 	if (ret < 0) {  in acx424akp_probe()
486 		return ret;  in acx424akp_probe()