4  * ILI9320 LCD controller driver core.
15 #include <linux/lcd.h>
75 static void ili9320_reset(struct ili9320 *lcd)  in ili9320_reset()  argument
77 	struct ili9320_platdata *cfg = lcd->platdata;  in ili9320_reset()
89 static inline int ili9320_init_chip(struct ili9320 *lcd)  in ili9320_init_chip()  argument
93 	ili9320_reset(lcd);  in ili9320_init_chip()
95 	ret = lcd->client->init(lcd, lcd->platdata);  in ili9320_init_chip()
97 		dev_err(lcd->dev, "failed to initialise display\n");  in ili9320_init_chip()
101 	lcd->initialised = 1;  in ili9320_init_chip()
105 static inline int ili9320_power_on(struct ili9320 *lcd)  in ili9320_power_on()  argument
107 	if (!lcd->initialised)  in ili9320_power_on()
108 		ili9320_init_chip(lcd);  in ili9320_power_on()
110 	lcd->display1 |= (ILI9320_DISPLAY1_D(3) | ILI9320_DISPLAY1_BASEE);  in ili9320_power_on()
111 	ili9320_write(lcd, ILI9320_DISPLAY1, lcd->display1);  in ili9320_power_on()
116 static inline int ili9320_power_off(struct ili9320 *lcd)  in ili9320_power_off()  argument
118 	lcd->display1 &= ~(ILI9320_DISPLAY1_D(3) | ILI9320_DISPLAY1_BASEE);  in ili9320_power_off()
119 	ili9320_write(lcd, ILI9320_DISPLAY1, lcd->display1);  in ili9320_power_off()
126 static int ili9320_power(struct ili9320 *lcd, int power)  in ili9320_power()  argument
130 	dev_dbg(lcd->dev, "power %d => %d\n", lcd->power, power);  in ili9320_power()
132 	if (POWER_IS_ON(power) && !POWER_IS_ON(lcd->power))  in ili9320_power()
133 		ret = ili9320_power_on(lcd);  in ili9320_power()
134 	else if (!POWER_IS_ON(power) && POWER_IS_ON(lcd->power))  in ili9320_power()
135 		ret = ili9320_power_off(lcd);  in ili9320_power()
138 		lcd->power = power;  in ili9320_power()
140 		dev_warn(lcd->dev, "failed to set power mode %d\n", power);  in ili9320_power()
145 static inline struct ili9320 *to_our_lcd(struct lcd_device *lcd)  in to_our_lcd()  argument
147 	return lcd_get_data(lcd);  in to_our_lcd()
152 	struct ili9320 *lcd = to_our_lcd(ld);  in ili9320_set_power()  local
154 	return ili9320_power(lcd, power);  in ili9320_set_power()
159 	struct ili9320 *lcd = to_our_lcd(ld);  in ili9320_get_power()  local
161 	return lcd->power;  in ili9320_get_power()
201 	struct lcd_device *lcd;  in ili9320_probe_spi()  local
233 	lcd = devm_lcd_device_register(&spi->dev, "ili9320", dev, ili,  in ili9320_probe_spi()
235 	if (IS_ERR(lcd)) {  in ili9320_probe_spi()
236 		dev_err(dev, "failed to register lcd device\n");  in ili9320_probe_spi()
237 		return PTR_ERR(lcd);  in ili9320_probe_spi()
240 	ili->lcd = lcd;  in ili9320_probe_spi()
246 		dev_err(dev, "failed to set lcd power state\n");  in ili9320_probe_spi()
261 int ili9320_suspend(struct ili9320 *lcd)  in ili9320_suspend()  argument
265 	ret = ili9320_power(lcd, FB_BLANK_POWERDOWN);  in ili9320_suspend()
267 	if (lcd->platdata->suspend == ILI9320_SUSPEND_DEEP) {  in ili9320_suspend()
268 		ili9320_write(lcd, ILI9320_POWER1, lcd->power1 |  in ili9320_suspend()
271 		lcd->initialised = 0;  in ili9320_suspend()
278 int ili9320_resume(struct ili9320 *lcd)  in ili9320_resume()  argument
280 	dev_info(lcd->dev, "resuming from power state %d\n", lcd->power);  in ili9320_resume()
282 	if (lcd->platdata->suspend == ILI9320_SUSPEND_DEEP)  in ili9320_resume()
283 		ili9320_write(lcd, ILI9320_POWER1, 0x00);  in ili9320_resume()
285 	return ili9320_power(lcd, FB_BLANK_UNBLANK);  in ili9320_resume()
291 void ili9320_shutdown(struct ili9320 *lcd)  in ili9320_shutdown()  argument
293 	ili9320_power(lcd, FB_BLANK_POWERDOWN);  in ili9320_shutdown()
298 MODULE_DESCRIPTION("ILI9320 LCD Driver");