OpenE2K
/
linux
6
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

media: aspeed: set hsync and vsync polarities to normal before starting mode detection 

[ Upstream commit 5b3f3c41c5 ]

Sometimes it detects a weird resolution such as 1024x287 when the
actual resolution is 1024x768. To resolve such an issue, this
commit adds clearing for hsync and vsync polarity register bits
at the beginning of the first mode detection. This is recommended
in the datasheet.

Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@linux.intel.com>
Reviewed-by: Eddie James <eajames@linux.ibm.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jae Hyun Yoo 2019-09-13 15:11:05 -03:00 committed by Greg Kroah-Hartman
parent ce9071fa5a
commit 1d1d6ea16d
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/media/platform/aspeed-video.c
View File

@ -741,6 +741,8 @@ static void aspeed_video_get_resolution(struct aspeed_video *video)
}
set_bit(VIDEO_RES_DETECT, &video->flags);
aspeed_video_update(video, VE_CTRL,
VE_CTRL_VSYNC_POL | VE_CTRL_HSYNC_POL, 0);
aspeed_video_enable_mode_detect(video);
rc = wait_event_interruptible_timeout(video->wait,