3  * LCD-OLinuXino support for panel driver
83 	struct lcd_olinuxino *lcd = to_lcd_olinuxino(panel);  in lcd_olinuxino_disable()  local
85 	if (!lcd->enabled)  in lcd_olinuxino_disable()
88 	lcd->enabled = false;  in lcd_olinuxino_disable()
95 	struct lcd_olinuxino *lcd = to_lcd_olinuxino(panel);  in lcd_olinuxino_unprepare()  local
97 	if (!lcd->prepared)  in lcd_olinuxino_unprepare()
100 	gpiod_set_value_cansleep(lcd->enable_gpio, 0);  in lcd_olinuxino_unprepare()
101 	regulator_disable(lcd->supply);  in lcd_olinuxino_unprepare()
103 	lcd->prepared = false;  in lcd_olinuxino_unprepare()
110 	struct lcd_olinuxino *lcd = to_lcd_olinuxino(panel);  in lcd_olinuxino_prepare()  local
113 	if (lcd->prepared)  in lcd_olinuxino_prepare()
116 	ret = regulator_enable(lcd->supply);  in lcd_olinuxino_prepare()
120 	gpiod_set_value_cansleep(lcd->enable_gpio, 1);  in lcd_olinuxino_prepare()
121 	lcd->prepared = true;  in lcd_olinuxino_prepare()
128 	struct lcd_olinuxino *lcd = to_lcd_olinuxino(panel);  in lcd_olinuxino_enable()  local
130 	if (lcd->enabled)  in lcd_olinuxino_enable()
133 	lcd->enabled = true;  in lcd_olinuxino_enable()
141 	struct lcd_olinuxino *lcd = to_lcd_olinuxino(panel);  in lcd_olinuxino_get_modes()  local
142 	struct lcd_olinuxino_info *lcd_info = &lcd->eeprom.info;  in lcd_olinuxino_get_modes()
147 	for (i = 0; i < lcd->eeprom.num_modes; i++) {  in lcd_olinuxino_get_modes()
149 			   &lcd->eeprom.reserved[i * sizeof(*lcd_mode)];  in lcd_olinuxino_get_modes()
208 	struct lcd_olinuxino *lcd;  in lcd_olinuxino_probe()  local
216 	lcd = devm_kzalloc(dev, sizeof(*lcd), GFP_KERNEL);  in lcd_olinuxino_probe()
217 	if (!lcd)  in lcd_olinuxino_probe()
220 	i2c_set_clientdata(client, lcd);  in lcd_olinuxino_probe()
221 	lcd->dev = dev;  in lcd_olinuxino_probe()
222 	lcd->client = client;  in lcd_olinuxino_probe()
224 	mutex_init(&lcd->mutex);  in lcd_olinuxino_probe()
228 		mutex_lock(&lcd->mutex);  in lcd_olinuxino_probe()
232 						    (u8 *)&lcd->eeprom + i);  in lcd_olinuxino_probe()
233 		mutex_unlock(&lcd->mutex);  in lcd_olinuxino_probe()
241 	checksum = ~crc32(~0, (u8 *)&lcd->eeprom, 252);  in lcd_olinuxino_probe()
242 	if (checksum != lcd->eeprom.checksum) {  in lcd_olinuxino_probe()
248 	if (lcd->eeprom.header != LCD_OLINUXINO_HEADER_MAGIC) {  in lcd_olinuxino_probe()
254 		 lcd->eeprom.info.name,  in lcd_olinuxino_probe()
255 		 lcd->eeprom.revision,  in lcd_olinuxino_probe()
256 		 lcd->eeprom.serial);  in lcd_olinuxino_probe()
262 	if (lcd->eeprom.num_modes > 4) {  in lcd_olinuxino_probe()
264 		lcd->eeprom.num_modes = 4;  in lcd_olinuxino_probe()
267 	lcd->enabled = false;  in lcd_olinuxino_probe()
268 	lcd->prepared = false;  in lcd_olinuxino_probe()
270 	lcd->supply = devm_regulator_get(dev, "power");  in lcd_olinuxino_probe()
271 	if (IS_ERR(lcd->supply))  in lcd_olinuxino_probe()
272 		return PTR_ERR(lcd->supply);  in lcd_olinuxino_probe()
274 	lcd->enable_gpio = devm_gpiod_get(dev, "enable", GPIOD_OUT_LOW);  in lcd_olinuxino_probe()
275 	if (IS_ERR(lcd->enable_gpio))  in lcd_olinuxino_probe()
276 		return PTR_ERR(lcd->enable_gpio);  in lcd_olinuxino_probe()
278 	drm_panel_init(&lcd->panel, dev, &lcd_olinuxino_funcs,  in lcd_olinuxino_probe()
281 	ret = drm_panel_of_backlight(&lcd->panel);  in lcd_olinuxino_probe()
285 	drm_panel_add(&lcd->panel);  in lcd_olinuxino_probe()
301 	{ .compatible = "olimex,lcd-olinuxino" },
318 MODULE_DESCRIPTION("LCD-OLinuXino driver");