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backlight: Add backlight_device parameter to check_fb 

check_fb from backlight_ops lacks a reference to the backlight_device
that's being referred to. Add this parameter so a backlight_device
can be mapped to a single framebuffer, especially if the same driver
handles multiple devices on a single system.

Signed-off-by: Bruno Prémont <bonbons@linux-vserver.org>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
This commit is contained in:
Bruno Prémont 2010-02-21 00:20:01 +01:00 committed by Richard Purdie
parent a4ebb780e1
commit 57e148b6a9
3 changed files with 3 additions and 3 deletions
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2
drivers/video/backlight/adx_bl.c
View File

@ -56,7 +56,7 @@ static int adx_backlight_get_brightness(struct backlight_device *bldev)
return brightness & 0xff;
}
static int adx_backlight_check_fb(struct fb_info *fb)
static int adx_backlight_check_fb(struct backlight_device *bldev, struct fb_info *fb)
{
return 1;
}

2
drivers/video/backlight/backlight.c
View File

@ -38,7 +38,7 @@ static int fb_notifier_callback(struct notifier_block *self,
mutex_lock(&bd->ops_lock);
if (bd->ops)
if (!bd->ops->check_fb ||
bd->ops->check_fb(evdata->info)) {
bd->ops->check_fb(bd, evdata->info)) {
bd->props.fb_blank = *(int *)evdata->data;
if (bd->props.fb_blank == FB_BLANK_UNBLANK)
bd->props.state &= ~BL_CORE_FBBLANK;

2
include/linux/backlight.h
View File

@ -47,7 +47,7 @@ struct backlight_ops {
int (*get_brightness)(struct backlight_device *);
/* Check if given framebuffer device is the one bound to this backlight;
return 0 if not, !=0 if it is. If NULL, backlight always matches the fb. */
int (*check_fb)(struct fb_info *);
int (*check_fb)(struct backlight_device *, struct fb_info *);
};
/* This structure defines all the properties of a backlight */