4  * ILI9320 LCD controller driver core.
14 #include <linux/lcd.h>
74 static void ili9320_reset(struct ili9320 *lcd)  in ili9320_reset()  argument
76 	struct ili9320_platdata *cfg = lcd->platdata;  in ili9320_reset()
88 static inline int ili9320_init_chip(struct ili9320 *lcd)  in ili9320_init_chip()  argument
92 	ili9320_reset(lcd);  in ili9320_init_chip()
94 	ret = lcd->client->init(lcd, lcd->platdata);  in ili9320_init_chip()
96 		dev_err(lcd->dev, "failed to initialise display\n");  in ili9320_init_chip()
100 	lcd->initialised = 1;  in ili9320_init_chip()
104 static inline int ili9320_power_on(struct ili9320 *lcd)  in ili9320_power_on()  argument
106 	if (!lcd->initialised)  in ili9320_power_on()
107 		ili9320_init_chip(lcd);  in ili9320_power_on()
109 	lcd->display1 |= (ILI9320_DISPLAY1_D(3) | ILI9320_DISPLAY1_BASEE);  in ili9320_power_on()
110 	ili9320_write(lcd, ILI9320_DISPLAY1, lcd->display1);  in ili9320_power_on()
115 static inline int ili9320_power_off(struct ili9320 *lcd)  in ili9320_power_off()  argument
117 	lcd->display1 &= ~(ILI9320_DISPLAY1_D(3) | ILI9320_DISPLAY1_BASEE);  in ili9320_power_off()
118 	ili9320_write(lcd, ILI9320_DISPLAY1, lcd->display1);  in ili9320_power_off()
125 static int ili9320_power(struct ili9320 *lcd, int power)  in ili9320_power()  argument
129 	dev_dbg(lcd->dev, "power %d => %d\n", lcd->power, power);  in ili9320_power()
131 	if (POWER_IS_ON(power) && !POWER_IS_ON(lcd->power))  in ili9320_power()
132 		ret = ili9320_power_on(lcd);  in ili9320_power()
133 	else if (!POWER_IS_ON(power) && POWER_IS_ON(lcd->power))  in ili9320_power()
134 		ret = ili9320_power_off(lcd);  in ili9320_power()
137 		lcd->power = power;  in ili9320_power()
139 		dev_warn(lcd->dev, "failed to set power mode %d\n", power);  in ili9320_power()
144 static inline struct ili9320 *to_our_lcd(struct lcd_device *lcd)  in to_our_lcd()  argument
146 	return lcd_get_data(lcd);  in to_our_lcd()
151 	struct ili9320 *lcd = to_our_lcd(ld);  in ili9320_set_power()  local
153 	return ili9320_power(lcd, power);  in ili9320_set_power()
158 	struct ili9320 *lcd = to_our_lcd(ld);  in ili9320_get_power()  local
160 	return lcd->power;  in ili9320_get_power()
200 	struct lcd_device *lcd;  in ili9320_probe_spi()  local
232 	lcd = devm_lcd_device_register(&spi->dev, "ili9320", dev, ili,  in ili9320_probe_spi()
234 	if (IS_ERR(lcd)) {  in ili9320_probe_spi()
235 		dev_err(dev, "failed to register lcd device\n");  in ili9320_probe_spi()
236 		return PTR_ERR(lcd);  in ili9320_probe_spi()
239 	ili->lcd = lcd;  in ili9320_probe_spi()
245 		dev_err(dev, "failed to set lcd power state\n");  in ili9320_probe_spi()
260 int ili9320_suspend(struct ili9320 *lcd)  in ili9320_suspend()  argument
264 	ret = ili9320_power(lcd, LCD_POWER_OFF);  in ili9320_suspend()
266 	if (lcd->platdata->suspend == ILI9320_SUSPEND_DEEP) {  in ili9320_suspend()
267 		ili9320_write(lcd, ILI9320_POWER1, lcd->power1 |  in ili9320_suspend()
270 		lcd->initialised = 0;  in ili9320_suspend()
277 int ili9320_resume(struct ili9320 *lcd)  in ili9320_resume()  argument
279 	dev_info(lcd->dev, "resuming from power state %d\n", lcd->power);  in ili9320_resume()
281 	if (lcd->platdata->suspend == ILI9320_SUSPEND_DEEP)  in ili9320_resume()
282 		ili9320_write(lcd, ILI9320_POWER1, 0x00);  in ili9320_resume()
284 	return ili9320_power(lcd, LCD_POWER_ON);  in ili9320_resume()
290 void ili9320_shutdown(struct ili9320 *lcd)  in ili9320_shutdown()  argument
292 	ili9320_power(lcd, LCD_POWER_OFF);  in ili9320_shutdown()
297 MODULE_DESCRIPTION("ILI9320 LCD Driver");