[PATCH v3] media: aspeed: fix mode-detect always time out at 2nd run

From: Jammy Huang
Date: Wed Nov 03 2021 - 01:29:16 EST


aspeed_video_get_resolution() will try to do res-detect again if the
timing got in last try is invalid. But it will always time out because
VE_SEQ_CTRL_TRIG_MODE_DET is only cleared after 1st mode-detect.

To fix the problem, just clear VE_SEQ_CTRL_TRIG_MODE_DET before setting
it in aspeed_video_enable_mode_detect().

Signed-off-by: Jammy Huang <jammy_huang@xxxxxxxxxxxxxx>
Acked-by: Paul Menzel <pmenzel@xxxxxxxxxxxxx>
Reviewed-by: Joel Stanley <joel@xxxxxxxxx>
---
v3:
- add tag
v2:
- update commit message
---
drivers/media/platform/aspeed-video.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/media/platform/aspeed-video.c b/drivers/media/platform/aspeed-video.c
index 5ffbabf884eb..fea5e4d0927e 100644
--- a/drivers/media/platform/aspeed-video.c
+++ b/drivers/media/platform/aspeed-video.c
@@ -518,6 +518,10 @@ static void aspeed_video_enable_mode_detect(struct aspeed_video *video)
aspeed_video_update(video, VE_INTERRUPT_CTRL, 0,
VE_INTERRUPT_MODE_DETECT);

+ /* Disable mode detect in order to re-trigger */
+ aspeed_video_update(video, VE_SEQ_CTRL,
+ VE_SEQ_CTRL_TRIG_MODE_DET, 0);
+
/* Trigger mode detect */
aspeed_video_update(video, VE_SEQ_CTRL, 0, VE_SEQ_CTRL_TRIG_MODE_DET);
}
@@ -809,10 +813,6 @@ static void aspeed_video_get_resolution(struct aspeed_video *video)
return;
}

- /* Disable mode detect in order to re-trigger */
- aspeed_video_update(video, VE_SEQ_CTRL,
- VE_SEQ_CTRL_TRIG_MODE_DET, 0);
-
aspeed_video_check_and_set_polarity(video);

aspeed_video_enable_mode_detect(video);
--
2.25.1