This is a note to let you know that I've just added the patch titled
media: ov5640: fix vblank unchange issue when work at dvp mode
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
media-ov5640-fix-vblank-unchange-issue-when-work-at-.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 72a533c574e76b57104b7d74e8b197248f4db959
Author: Guoniu.zhou <guoniu.zhou@xxxxxxx>
Date: Wed Jul 19 15:30:12 2023 +0800
media: ov5640: fix vblank unchange issue when work at dvp mode
[ Upstream commit 8fc29e3c9f682d4ad9b0764d44ecc6c19b000051 ]
The value of V4L2_CID_VBLANK control is initialized to default vblank
value of 640x480 when driver probe. When OV5640 work at DVP mode, the
control value won't update and lead to sensor can't output data if the
resolution remain the same as last time since incorrect total vertical
size. So update it when there is a new value applied.
Fixes: bce93b827de6 ("media: ov5640: Add VBLANK control")
Signed-off-by: Guoniu.zhou <guoniu.zhou@xxxxxxx>
Signed-off-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/media/i2c/ov5640.c b/drivers/media/i2c/ov5640.c
index 5fe85aa2d2ec4..1c9cda1e7df5c 100644
--- a/drivers/media/i2c/ov5640.c
+++ b/drivers/media/i2c/ov5640.c
@@ -2850,12 +2850,22 @@ static int ov5640_try_fmt_internal(struct v4l2_subdev *sd,
return 0;
}
+static void __v4l2_ctrl_vblank_update(struct ov5640_dev *sensor, u32 vblank)
+{
+ const struct ov5640_mode_info *mode = sensor->current_mode;
+
+ __v4l2_ctrl_modify_range(sensor->ctrls.vblank, OV5640_MIN_VBLANK,
+ OV5640_MAX_VTS - mode->height, 1, vblank);
+
+ __v4l2_ctrl_s_ctrl(sensor->ctrls.vblank, vblank);
+}
+
static int ov5640_update_pixel_rate(struct ov5640_dev *sensor)
{
const struct ov5640_mode_info *mode = sensor->current_mode;
enum ov5640_pixel_rate_id pixel_rate_id = mode->pixel_rate;
struct v4l2_mbus_framefmt *fmt = &sensor->fmt;
- const struct ov5640_timings *timings;
+ const struct ov5640_timings *timings = ov5640_timings(sensor, mode);
s32 exposure_val, exposure_max;
unsigned int hblank;
unsigned int i = 0;
@@ -2874,6 +2884,8 @@ static int ov5640_update_pixel_rate(struct ov5640_dev *sensor)
__v4l2_ctrl_s_ctrl_int64(sensor->ctrls.pixel_rate,
ov5640_calc_pixel_rate(sensor));
+ __v4l2_ctrl_vblank_update(sensor, timings->vblank_def);
+
return 0;
}
@@ -2916,15 +2928,12 @@ static int ov5640_update_pixel_rate(struct ov5640_dev *sensor)
__v4l2_ctrl_s_ctrl_int64(sensor->ctrls.pixel_rate, pixel_rate);
__v4l2_ctrl_s_ctrl(sensor->ctrls.link_freq, i);
- timings = ov5640_timings(sensor, mode);
hblank = timings->htot - mode->width;
__v4l2_ctrl_modify_range(sensor->ctrls.hblank,
hblank, hblank, 1, hblank);
vblank = timings->vblank_def;
- __v4l2_ctrl_modify_range(sensor->ctrls.vblank, OV5640_MIN_VBLANK,
- OV5640_MAX_VTS - mode->height, 1, vblank);
- __v4l2_ctrl_s_ctrl(sensor->ctrls.vblank, vblank);
+ __v4l2_ctrl_vblank_update(sensor, vblank);
exposure_max = timings->crop.height + vblank - 4;
exposure_val = clamp_t(s32, sensor->ctrls.exposure->val,
