ARM: clps711x: edb7211: Control LCD backlight via PWM

This patch provide control LCD backlight via PWM. GPIO is used
only for switch backlight ON and OFF.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Olof Johansson <olof@lixom.net>

diff --git a/arch/arm/mach-clps711x/board-edb7211.c b/arch/arm/mach-clps711x/board-edb7211.c
index 970f4e1..9dfb990 100644 (file)
--- a/arch/arm/mach-clps711x/board-edb7211.c
+++ b/arch/arm/mach-clps711x/board-edb7211.c
@@ -109,13 +109,14 @@ static struct plat_lcd_data edb7211_lcd_power_pdata = {
 
 static void edb7211_lcd_backlight_set_intensity(int intensity)
 {
-       gpio_set_value(EDB7211_LCDBL, intensity);
+       gpio_set_value(EDB7211_LCDBL, !!intensity);
+       clps_writel((clps_readl(PMPCON) & 0xf0ff) | (intensity << 8), PMPCON);
 }
 
 static struct generic_bl_info edb7211_lcd_backlight_pdata = {
        .name                   = "lcd-backlight.0",
        .default_intensity      = 0x01,
-       .max_intensity          = 0x01,
+       .max_intensity          = 0x0f,
        .set_bl_intensity       = edb7211_lcd_backlight_set_intensity,
 };