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fbdev: sh_mobile_lcdc: Store the backlight brightness internally 

There's no need to query the hardware for the currenty brightness value
through a platform data callback when we can cache the value internally
in the LCDC driver.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
This commit is contained in:
Laurent Pinchart 2012-08-15 18:10:03 +02:00
parent 074d0da486
commit 656d4f332c
2 changed files with 3 additions and 1 deletions
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3
drivers/video/sh_mobile_lcdcfb.c
View File

@ -2282,6 +2282,7 @@ static int sh_mobile_lcdc_update_bl(struct backlight_device *bdev)
bdev->props.state & (BL_CORE_SUSPENDED | BL_CORE_FBBLANK))
brightness = 0;
ch->bl_brightness = brightness;
return ch->cfg->bl_info.set_brightness(brightness);
}
@ -2289,7 +2290,7 @@ static int sh_mobile_lcdc_get_brightness(struct backlight_device *bdev)
{
struct sh_mobile_lcdc_chan *ch = bl_get_data(bdev);
return ch->cfg->bl_info.get_brightness();
return ch->bl_brightness;
}
static int sh_mobile_lcdc_check_fb(struct backlight_device *bdev,

1
drivers/video/sh_mobile_lcdcfb.h
View File

@ -94,6 +94,7 @@ struct sh_mobile_lcdc_chan {
/* Backlight */
struct backlight_device *bl;
unsigned int bl_brightness;
/* FB */
struct fb_info *info;