74 static int td043mtea1_write(struct td043mtea1_panel *lcd, u8 addr, u8 value)  in td043mtea1_write()  argument
91 	ret = spi_sync(lcd->spi, &msg);  in td043mtea1_write()
93 		dev_warn(&lcd->spi->dev, "failed to write to LCD reg (%d)\n",  in td043mtea1_write()
99 static void td043mtea1_write_gamma(struct td043mtea1_panel *lcd)  in td043mtea1_write_gamma()  argument
101 	const u16 *gamma = lcd->gamma;  in td043mtea1_write_gamma()
108 	td043mtea1_write(lcd, 0x11, val);  in td043mtea1_write_gamma()
112 	td043mtea1_write(lcd, 0x12, val);  in td043mtea1_write_gamma()
116 	td043mtea1_write(lcd, 0x13, val);  in td043mtea1_write_gamma()
120 		td043mtea1_write(lcd, 0x14 + i, gamma[i] & 0xff);  in td043mtea1_write_gamma()
123 static int td043mtea1_write_mirror(struct td043mtea1_panel *lcd)  in td043mtea1_write_mirror()  argument
127 	if (lcd->vmirror)  in td043mtea1_write_mirror()
130 	return td043mtea1_write(lcd, 4, reg4);  in td043mtea1_write_mirror()
133 static int td043mtea1_power_on(struct td043mtea1_panel *lcd)  in td043mtea1_power_on()  argument
137 	if (lcd->powered_on)  in td043mtea1_power_on()
140 	ret = regulator_enable(lcd->vcc_reg);  in td043mtea1_power_on()
147 	gpiod_set_value(lcd->reset_gpio, 0);  in td043mtea1_power_on()
149 	td043mtea1_write(lcd, 2, TPO_R02_MODE(lcd->mode) | TPO_R02_NCLK_RISING);  in td043mtea1_power_on()
150 	td043mtea1_write(lcd, 3, TPO_R03_VAL_NORMAL);  in td043mtea1_power_on()
151 	td043mtea1_write(lcd, 0x20, 0xf0);  in td043mtea1_power_on()
152 	td043mtea1_write(lcd, 0x21, 0xf0);  in td043mtea1_power_on()
153 	td043mtea1_write_mirror(lcd);  in td043mtea1_power_on()
154 	td043mtea1_write_gamma(lcd);  in td043mtea1_power_on()
156 	lcd->powered_on = true;  in td043mtea1_power_on()
161 static void td043mtea1_power_off(struct td043mtea1_panel *lcd)  in td043mtea1_power_off()  argument
163 	if (!lcd->powered_on)  in td043mtea1_power_off()
166 	td043mtea1_write(lcd, 3, TPO_R03_VAL_STANDBY | TPO_R03_EN_PWM);  in td043mtea1_power_off()
168 	gpiod_set_value(lcd->reset_gpio, 1);  in td043mtea1_power_off()
173 	td043mtea1_write(lcd, 3, TPO_R03_VAL_STANDBY);  in td043mtea1_power_off()
175 	regulator_disable(lcd->vcc_reg);  in td043mtea1_power_off()
177 	lcd->powered_on = false;  in td043mtea1_power_off()
187 	struct td043mtea1_panel *lcd = dev_get_drvdata(dev);  in vmirror_show()  local
189 	return sysfs_emit(buf, "%d\n", lcd->vmirror);  in vmirror_show()
195 	struct td043mtea1_panel *lcd = dev_get_drvdata(dev);  in vmirror_store()  local
203 	lcd->vmirror = !!val;  in vmirror_store()
205 	ret = td043mtea1_write_mirror(lcd);  in vmirror_store()
215 	struct td043mtea1_panel *lcd = dev_get_drvdata(dev);  in mode_show()  local
217 	return sysfs_emit(buf, "%d\n", lcd->mode);  in mode_show()
223 	struct td043mtea1_panel *lcd = dev_get_drvdata(dev);  in mode_store()  local
231 	lcd->mode = val;  in mode_store()
234 	td043mtea1_write(lcd, 2, val);  in mode_store()
242 	struct td043mtea1_panel *lcd = dev_get_drvdata(dev);  in gamma_show()  local
247 	for (i = 0; i < ARRAY_SIZE(lcd->gamma); i++) {  in gamma_show()
249 			       lcd->gamma[i]);  in gamma_show()
262 	struct td043mtea1_panel *lcd = dev_get_drvdata(dev);  in gamma_store()  local
274 		lcd->gamma[i] = g[i];  in gamma_store()
276 	td043mtea1_write_gamma(lcd);  in gamma_store()
302 	struct td043mtea1_panel *lcd = to_td043mtea1_device(panel);  in td043mtea1_unprepare()  local
304 	if (!lcd->spi_suspended)  in td043mtea1_unprepare()
305 		td043mtea1_power_off(lcd);  in td043mtea1_unprepare()
312 	struct td043mtea1_panel *lcd = to_td043mtea1_device(panel);  in td043mtea1_prepare()  local
317 	 * yet, so we'll program the LCD from SPI PM resume callback.  in td043mtea1_prepare()
319 	if (lcd->spi_suspended)  in td043mtea1_prepare()
322 	ret = td043mtea1_power_on(lcd);  in td043mtea1_prepare()
324 		dev_err(&lcd->spi->dev, "%s: power on failed (%d)\n",  in td043mtea1_prepare()
387 	struct td043mtea1_panel *lcd = dev_get_drvdata(dev);  in td043mtea1_suspend()  local
389 	if (lcd->powered_on) {  in td043mtea1_suspend()
390 		td043mtea1_power_off(lcd);  in td043mtea1_suspend()
391 		lcd->powered_on = true;  in td043mtea1_suspend()
394 	lcd->spi_suspended = true;  in td043mtea1_suspend()
401 	struct td043mtea1_panel *lcd = dev_get_drvdata(dev);  in td043mtea1_resume()  local
404 	lcd->spi_suspended = false;  in td043mtea1_resume()
406 	if (lcd->powered_on) {  in td043mtea1_resume()
407 		lcd->powered_on = false;  in td043mtea1_resume()
408 		ret = td043mtea1_power_on(lcd);  in td043mtea1_resume()
421 	struct td043mtea1_panel *lcd;  in td043mtea1_probe()  local
424 	lcd = devm_kzalloc(&spi->dev, sizeof(*lcd), GFP_KERNEL);  in td043mtea1_probe()
425 	if (lcd == NULL)  in td043mtea1_probe()
428 	spi_set_drvdata(spi, lcd);  in td043mtea1_probe()
429 	lcd->spi = spi;  in td043mtea1_probe()
430 	lcd->mode = TPO_R02_MODE_800x480;  in td043mtea1_probe()
431 	memcpy(lcd->gamma, td043mtea1_def_gamma, sizeof(lcd->gamma));  in td043mtea1_probe()
433 	lcd->vcc_reg = devm_regulator_get(&spi->dev, "vcc");  in td043mtea1_probe()
434 	if (IS_ERR(lcd->vcc_reg))  in td043mtea1_probe()
435 		return dev_err_probe(&spi->dev, PTR_ERR(lcd->vcc_reg),  in td043mtea1_probe()
438 	lcd->reset_gpio = devm_gpiod_get(&spi->dev, "reset", GPIOD_OUT_HIGH);  in td043mtea1_probe()
439 	if (IS_ERR(lcd->reset_gpio))  in td043mtea1_probe()
440 		return dev_err_probe(&spi->dev, PTR_ERR(lcd->reset_gpio),  in td043mtea1_probe()
458 	drm_panel_init(&lcd->panel, &lcd->spi->dev, &td043mtea1_funcs,  in td043mtea1_probe()
461 	drm_panel_add(&lcd->panel);  in td043mtea1_probe()
468 	struct td043mtea1_panel *lcd = spi_get_drvdata(spi);  in td043mtea1_remove()  local
470 	drm_panel_remove(&lcd->panel);  in td043mtea1_remove()
471 	drm_panel_disable(&lcd->panel);  in td043mtea1_remove()
472 	drm_panel_unprepare(&lcd->panel);  in td043mtea1_remove()