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[1/4] media: aspeed: Correct value for h-total-pixels

Message ID 20211217095403.2618-2-jammy_huang@aspeedtech.com (mailing list archive)
State New, archived
Headers show
Series Correct timing report | expand

Commit Message

Jammy Huang Dec. 17, 2021, 9:54 a.m. UTC
Previous reg-field, 0x98[11:0], stands for the period of the detected
hsync signal.
Use the correct reg, 0xa0, to get h-total in pixels.

Signed-off-by: Jammy Huang <jammy_huang@aspeedtech.com>
---
 drivers/media/platform/aspeed-video.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

Comments

Joel Stanley Dec. 22, 2021, 12:54 a.m. UTC | #1
On Fri, 17 Dec 2021 at 09:54, Jammy Huang <jammy_huang@aspeedtech.com> wrote:
>
> Previous reg-field, 0x98[11:0], stands for the period of the detected
> hsync signal.
> Use the correct reg, 0xa0, to get h-total in pixels.
>
> Signed-off-by: Jammy Huang <jammy_huang@aspeedtech.com>

Fixes: d2b4387f3bdf ("media: platform: Add Aspeed Video Engine driver")
Reviewed-by: Joel Stanley <joel@jms.id.au>

> ---
>  drivers/media/platform/aspeed-video.c | 9 ++++++---
>  1 file changed, 6 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/media/platform/aspeed-video.c b/drivers/media/platform/aspeed-video.c
> index b388bc56ce81..d5f77b205175 100644
> --- a/drivers/media/platform/aspeed-video.c
> +++ b/drivers/media/platform/aspeed-video.c
> @@ -166,7 +166,7 @@
>  #define  VE_SRC_TB_EDGE_DET_BOT                GENMASK(28, VE_SRC_TB_EDGE_DET_BOT_SHF)
>
>  #define VE_MODE_DETECT_STATUS          0x098
> -#define  VE_MODE_DETECT_H_PIXELS       GENMASK(11, 0)
> +#define  VE_MODE_DETECT_H_PERIOD       GENMASK(11, 0)
>  #define  VE_MODE_DETECT_V_LINES_SHF    16
>  #define  VE_MODE_DETECT_V_LINES                GENMASK(27, VE_MODE_DETECT_V_LINES_SHF)
>  #define  VE_MODE_DETECT_STATUS_VSYNC   BIT(28)
> @@ -177,6 +177,8 @@
>  #define  VE_SYNC_STATUS_VSYNC_SHF      16
>  #define  VE_SYNC_STATUS_VSYNC          GENMASK(27, VE_SYNC_STATUS_VSYNC_SHF)
>
> +#define VE_H_TOTAL_PIXELS              0x0A0
> +
>  #define VE_INTERRUPT_CTRL              0x304
>  #define VE_INTERRUPT_STATUS            0x308
>  #define  VE_INTERRUPT_MODE_DETECT_WD   BIT(0)
> @@ -938,6 +940,7 @@ static void aspeed_video_get_resolution(struct aspeed_video *video)
>         u32 src_lr_edge;
>         u32 src_tb_edge;
>         u32 sync;
> +       u32 htotal;
>         struct v4l2_bt_timings *det = &video->detected_timings;
>
>         det->width = MIN_WIDTH;
> @@ -983,6 +986,7 @@ static void aspeed_video_get_resolution(struct aspeed_video *video)
>                 src_tb_edge = aspeed_video_read(video, VE_SRC_TB_EDGE_DET);
>                 mds = aspeed_video_read(video, VE_MODE_DETECT_STATUS);
>                 sync = aspeed_video_read(video, VE_SYNC_STATUS);
> +               htotal = aspeed_video_read(video, VE_H_TOTAL_PIXELS);
>
>                 video->frame_bottom = (src_tb_edge & VE_SRC_TB_EDGE_DET_BOT) >>
>                         VE_SRC_TB_EDGE_DET_BOT_SHF;
> @@ -999,8 +1003,7 @@ static void aspeed_video_get_resolution(struct aspeed_video *video)
>                         VE_SRC_LR_EDGE_DET_RT_SHF;
>                 video->frame_left = src_lr_edge & VE_SRC_LR_EDGE_DET_LEFT;
>                 det->hfrontporch = video->frame_left;
> -               det->hbackporch = (mds & VE_MODE_DETECT_H_PIXELS) -
> -                       video->frame_right;
> +               det->hbackporch = htotal - video->frame_right;
>                 det->hsync = sync & VE_SYNC_STATUS_HSYNC;
>                 if (video->frame_left > video->frame_right)
>                         continue;
> --
> 2.25.1
>
diff mbox series

Patch

diff --git a/drivers/media/platform/aspeed-video.c b/drivers/media/platform/aspeed-video.c
index b388bc56ce81..d5f77b205175 100644
--- a/drivers/media/platform/aspeed-video.c
+++ b/drivers/media/platform/aspeed-video.c
@@ -166,7 +166,7 @@ 
 #define  VE_SRC_TB_EDGE_DET_BOT		GENMASK(28, VE_SRC_TB_EDGE_DET_BOT_SHF)
 
 #define VE_MODE_DETECT_STATUS		0x098
-#define  VE_MODE_DETECT_H_PIXELS	GENMASK(11, 0)
+#define  VE_MODE_DETECT_H_PERIOD	GENMASK(11, 0)
 #define  VE_MODE_DETECT_V_LINES_SHF	16
 #define  VE_MODE_DETECT_V_LINES		GENMASK(27, VE_MODE_DETECT_V_LINES_SHF)
 #define  VE_MODE_DETECT_STATUS_VSYNC	BIT(28)
@@ -177,6 +177,8 @@ 
 #define  VE_SYNC_STATUS_VSYNC_SHF	16
 #define  VE_SYNC_STATUS_VSYNC		GENMASK(27, VE_SYNC_STATUS_VSYNC_SHF)
 
+#define VE_H_TOTAL_PIXELS		0x0A0
+
 #define VE_INTERRUPT_CTRL		0x304
 #define VE_INTERRUPT_STATUS		0x308
 #define  VE_INTERRUPT_MODE_DETECT_WD	BIT(0)
@@ -938,6 +940,7 @@  static void aspeed_video_get_resolution(struct aspeed_video *video)
 	u32 src_lr_edge;
 	u32 src_tb_edge;
 	u32 sync;
+	u32 htotal;
 	struct v4l2_bt_timings *det = &video->detected_timings;
 
 	det->width = MIN_WIDTH;
@@ -983,6 +986,7 @@  static void aspeed_video_get_resolution(struct aspeed_video *video)
 		src_tb_edge = aspeed_video_read(video, VE_SRC_TB_EDGE_DET);
 		mds = aspeed_video_read(video, VE_MODE_DETECT_STATUS);
 		sync = aspeed_video_read(video, VE_SYNC_STATUS);
+		htotal = aspeed_video_read(video, VE_H_TOTAL_PIXELS);
 
 		video->frame_bottom = (src_tb_edge & VE_SRC_TB_EDGE_DET_BOT) >>
 			VE_SRC_TB_EDGE_DET_BOT_SHF;
@@ -999,8 +1003,7 @@  static void aspeed_video_get_resolution(struct aspeed_video *video)
 			VE_SRC_LR_EDGE_DET_RT_SHF;
 		video->frame_left = src_lr_edge & VE_SRC_LR_EDGE_DET_LEFT;
 		det->hfrontporch = video->frame_left;
-		det->hbackporch = (mds & VE_MODE_DETECT_H_PIXELS) -
-			video->frame_right;
+		det->hbackporch = htotal - video->frame_right;
 		det->hsync = sync & VE_SYNC_STATUS_HSYNC;
 		if (video->frame_left > video->frame_right)
 			continue;