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authorEric Miao <eric.miao@marvell.com>2008-08-29 04:18:43 +0800
committerRussell King <rmk+kernel@arm.linux.org.uk>2008-09-23 22:01:33 +0100
commitfaa312da9cd0b044bdc84483162c6ee10b9c83c0 (patch)
tree19171bda6c11fa539d48c6a1568ade215c95ce3e /drivers/video/backlight/lcd.c
parent6ae19b04ab41a4db0f0c48ec0b78950f6b028823 (diff)
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.c18
1 files changed, 15 insertions, 3 deletions
diff --git a/drivers/video/backlight/lcd.c b/drivers/video/backlight/lcd.c
index b15b2b84a6f..8e1731d3b22 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;
}