Using stable-signal in resolution detection, and try detection again if unstable. VE_MODE_DETECT_EXTSRC_ADC: 1 if video source is from ADC output. VE_MODE_DETECT_H_STABLE: 1 if horizontal signal detection is stable. VE_MODE_DETECT_V_STABLE: 1 if vertical signal detection is stable. Signed-off-by: Jammy Huang <jammy_huang@xxxxxxxxxxxxxx> --- drivers/media/platform/aspeed-video.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/media/platform/aspeed-video.c b/drivers/media/platform/aspeed-video.c index 5d1ec3de50ad..eb9c17ac0e14 100644 --- a/drivers/media/platform/aspeed-video.c +++ b/drivers/media/platform/aspeed-video.c @@ -153,9 +153,14 @@ #define VE_MODE_DETECT_STATUS 0x098 #define VE_MODE_DETECT_H_PERIOD GENMASK(11, 0) +#define VE_MODE_DETECT_EXTSRC_ADC BIT(12) +#define VE_MODE_DETECT_H_STABLE BIT(13) +#define VE_MODE_DETECT_V_STABLE BIT(14) #define VE_MODE_DETECT_V_LINES GENMASK(27, 16) #define VE_MODE_DETECT_STATUS_VSYNC BIT(28) #define VE_MODE_DETECT_STATUS_HSYNC BIT(29) +#define VE_MODE_DETECT_VSYNC_RDY BIT(30) +#define VE_MODE_DETECT_HSYNC_RDY BIT(31) #define VE_SYNC_STATUS 0x09c #define VE_SYNC_STATUS_HSYNC GENMASK(11, 0) @@ -909,6 +914,7 @@ static void aspeed_video_get_resolution(struct aspeed_video *video) bool invalid_resolution = true; int rc; int tries = 0; + u32 mds; u32 src_lr_edge; u32 src_tb_edge; struct v4l2_bt_timings *det = &video->detected_timings; @@ -939,6 +945,13 @@ static void aspeed_video_get_resolution(struct aspeed_video *video) return; } + mds = aspeed_video_read(video, VE_MODE_DETECT_STATUS); + // try detection again if current signal isn't stable + if (!(mds & VE_MODE_DETECT_H_STABLE) || + !(mds & VE_MODE_DETECT_V_STABLE) || + (mds & VE_MODE_DETECT_EXTSRC_ADC)) + continue; + aspeed_video_check_and_set_polarity(video); aspeed_video_enable_mode_detect(video); -- 2.25.1
