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| author | Inki Dae <inki.dae@samsung.com> | 2012-05-29 15:07:12 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-05-29 16:22:28 -0700 |
| commit | bf05929f41d6c3c79ec1961d90d808a634f09dd9 (patch) | |
| tree | 71afacc10d3a3cf46cd72b98beb1ccddeaa2bd31 | |
| parent | aa523a82ee1be3f50560338e06151918fd8613e7 (diff) | |
| download | linux-stable-bf05929f41d6c3c79ec1961d90d808a634f09dd9.tar.gz linux-stable-bf05929f41d6c3c79ec1961d90d808a634f09dd9.tar.bz2 linux-stable-bf05929f41d6c3c79ec1961d90d808a634f09dd9.zip | |
fbdev: add events for early fb event support
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>
| -rw-r--r-- | drivers/video/fbmem.c | 21 | ||||
| -rw-r--r-- | include/linux/fb.h | 4 |
2 files changed, 19 insertions, 6 deletions
diff --git a/drivers/video/fbmem.c b/drivers/video/fbmem.c index c6ce416ab587..0dff12a1daef 100644 --- a/drivers/video/fbmem.c +++ b/drivers/video/fbmem.c @@ -1046,20 +1046,29 @@ fb_set_var(struct fb_info *info, struct fb_var_screeninfo *var) int fb_blank(struct fb_info *info, int blank) { - int ret = -EINVAL; + struct fb_event event; + int ret = -EINVAL, early_ret; if (blank > FB_BLANK_POWERDOWN) blank = FB_BLANK_POWERDOWN; + event.info = info; + event.data = ␣ + + early_ret = fb_notifier_call_chain(FB_EARLY_EVENT_BLANK, &event); + if (info->fbops->fb_blank) ret = info->fbops->fb_blank(blank, info); - if (!ret) { - struct fb_event event; - - event.info = info; - event.data = ␣ + if (!ret) fb_notifier_call_chain(FB_EVENT_BLANK, &event); + else { + /* + * if fb_blank is failed then revert effects of + * the early blank event. + */ + if (!early_ret) + fb_notifier_call_chain(FB_R_EARLY_EVENT_BLANK, &event); } return ret; diff --git a/include/linux/fb.h b/include/linux/fb.h index d31cb682e173..a3229d7ab9f2 100644 --- a/include/linux/fb.h +++ b/include/linux/fb.h @@ -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; |