lcd: add SPI-based LCD and backlight driver for SHARP corgi/spitz

The driver is based on different source files including corgi_ssp.c,
corgi_lcd.c and corgi_bl.c, previously authored by Richard Purdie
and many others.

The LCD and Backlight device actually share the same SPI device, so
they are made into this single driver.
Signed-off-by: Eric Miao <eric.miao@marvell.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

drivers/video/backlight/Kconfig

@@ -24,6 +24,13 @@ config LCD_CLASS_DEVICE
 	  To have support for your specific LCD panel you will have to
 	  select the proper drivers which depend on this option.
 
+config LCD_CORGI
+	tristate "LCD Panel support for SHARP corgi/spitz model"
+	depends on LCD_CLASS_DEVICE && SPI_MASTER && PXA_SHARPSL
+	help
+	  Say y here to support the LCD panels usually found on SHARP
+	  corgi (C7x0) and spitz (Cxx00) models.
+
 config LCD_LTV350QV
 	tristate "Samsung LTV350QV LCD Panel"
 	depends on LCD_CLASS_DEVICE && SPI_MASTER

drivers/video/backlight/Makefile

 # Backlight & LCD drivers
 
 obj-$(CONFIG_LCD_CLASS_DEVICE)     += lcd.o
+obj-$(CONFIG_LCD_CORGI)		   += corgi_lcd.o
 obj-$(CONFIG_LCD_LTV350QV)	   += ltv350qv.o
 obj-$(CONFIG_LCD_ILI9320)	   += ili9320.o
 obj-$(CONFIG_LCD_PLATFORM)	   += platform_lcd.o

include/linux/spi/corgi_lcd.h

+#ifndef __LINUX_SPI_CORGI_LCD_H
+#define __LINUX_SPI_CORGI_LCD_H
+
+#define CORGI_LCD_MODE_QVGA	1
+#define CORGI_LCD_MODE_VGA	2
+
+struct corgi_lcd_platform_data {
+	int	init_mode;
+	int	max_intensity;
+	int	default_intensity;
+
+	void (*notify)(int intensity);
+	void (*kick_battery)(void);
+};
+
+#endif /* __LINUX_SPI_CORGI_LCD_H */