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fbdev: add events for early fb event support

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Add FB_EARLY_EVENT_BLANK and FB_R_EARLY_EVENT_BLANK event mode supports.
first, fb_notifier_call_chain() is called with FB_EARLY_EVENT_BLANK and
fb_blank() of specific fb driver is called and then
fb_notifier_call_chain() is called with FB_EVENT_BLANK again at
fb_blank().  and if fb_blank() was failed then fb_nitifier_call_chain()
would be called with FB_R_EARLY_EVENT_BLANK to revert the previous
effects.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Inki Dae 2012-05-29 15:07:12 -07:00 • committed by Linus Torvalds
parent aa523a82ee
commit bf05929f41
2 changed files with 19 additions and 6 deletions
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4
include/linux/fb.h
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@ -554,6 +554,10 @@ struct fb_cursor_user {
#define FB_EVENT_FB_UNBIND 0x0E
/* CONSOLE-SPECIFIC: remap all consoles to new fb - for vga switcheroo */
#define FB_EVENT_REMAP_ALL_CONSOLE 0x0F
/* A hardware display blank early change occured */
#define FB_EARLY_EVENT_BLANK 0x10
/* A hardware display blank revert early change occured */
#define FB_R_EARLY_EVENT_BLANK 0x11
struct fb_event {
struct fb_info *info;