6.5-stable review patch. If anyone has any objections, please let me know.
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From: Guoniu.zhou guoniu.zhou@nxp.com
[ 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@nxp.com Signed-off-by: Sakari Ailus sakari.ailus@linux.intel.com Signed-off-by: Hans Verkuil hverkuil-cisco@xs4all.nl Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/media/i2c/ov5640.c | 19 ++++++++++++++----- 1 file changed, 14 insertions(+), 5 deletions(-)
diff --git a/drivers/media/i2c/ov5640.c b/drivers/media/i2c/ov5640.c index 8b7ff2f3bdda7..7c041dafff2b1 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,