diff options
| author | Eric Miao <eric.miao@marvell.com> | 2008-08-29 04:18:43 +0800 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2008-09-23 22:01:33 +0100 |
| commit | faa312da9cd0b044bdc84483162c6ee10b9c83c0 (patch) | |
| tree | 19171bda6c11fa539d48c6a1568ade215c95ce3e /drivers/video/backlight/lcd.c | |
| parent | 6ae19b04ab41a4db0f0c48ec0b78950f6b028823 (diff) | |
| download | lwn-faa312da9cd0b044bdc84483162c6ee10b9c83c0.tar.gz lwn-faa312da9cd0b044bdc84483162c6ee10b9c83c0.zip | |
lcd: allow lcd device to handle mode change events
Some LCD panels are capable of different resolutions, and is allowed
to change at run-time, so to make "struct lcd_device" to be able to
handle mode change events here.
Signed-off-by: Eric Miao <eric.miao@marvell.com>
Acked-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'drivers/video/backlight/lcd.c')
| -rw-r--r-- | drivers/video/backlight/lcd.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/drivers/video/backlight/lcd.c b/drivers/video/backlight/lcd.c index b15b2b84a6f7..8e1731d3b228 100644 --- a/drivers/video/backlight/lcd.c +++ b/drivers/video/backlight/lcd.c @@ -27,14 +27,26 @@ static int fb_notifier_callback(struct notifier_block *self, struct fb_event *evdata = data; /* If we aren't interested in this event, skip it immediately ... */ - if (event != FB_EVENT_BLANK) + switch (event) { + case FB_EVENT_BLANK: + case FB_EVENT_MODE_CHANGE: + case FB_EVENT_MODE_CHANGE_ALL: + break; + default: return 0; + } ld = container_of(self, struct lcd_device, fb_notif); + if (!ld->ops) + return 0; + mutex_lock(&ld->ops_lock); - if (ld->ops) - if (!ld->ops->check_fb || ld->ops->check_fb(ld, evdata->info)) + if (!ld->ops->check_fb || ld->ops->check_fb(ld, evdata->info)) { + if (event == FB_EVENT_BLANK) ld->ops->set_power(ld, *(int *)evdata->data); + else + ld->ops->set_mode(ld, evdata->data); + } mutex_unlock(&ld->ops_lock); return 0; } |