On format change, sometimes, sensor was streaming at a much higher
FPS than the default. This was resulting in various problems like
frame drops/corruption.
Upon format change, set default vblank as current vblank. This will
ensure that sensor will start streaming at default fps.
Signed-off-by: Chiranjeevi Rapolu <chiranjeevi.rap...@intel.com>
---
drivers/media/i2c/ov13858.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/media/i2c/ov13858.c b/drivers/media/i2c/ov13858.c
index 86550d8..8e6c8f0 100644
--- a/drivers/media/i2c/ov13858.c
+++ b/drivers/media/i2c/ov13858.c
@@ -1377,6 +1377,7 @@ static int ov13858_get_pad_format(struct v4l2_subdev *sd,
struct ov13858 *ov13858 = to_ov13858(sd);
const struct ov13858_mode *mode;
struct v4l2_mbus_framefmt *framefmt;
+ s32 vblank_def;
s64 h_blank;
mutex_lock(&ov13858->mutex);
@@ -1397,10 +1398,12 @@ static int ov13858_get_pad_format(struct v4l2_subdev
*sd,
ov13858->pixel_rate,
link_freq_configs[mode->link_freq_index].pixel_rate);
/* Update limits and set FPS to default */
+ vblank_def = ov13858->cur_mode->vts - ov13858->cur_mode->height;
__v4l2_ctrl_modify_range(
ov13858->vblank, OV13858_VBLANK_MIN,
OV13858_VTS_MAX - ov13858->cur_mode->height, 1,
- ov13858->cur_mode->vts - ov13858->cur_mode->height);
+ vblank_def);
+ __v4l2_ctrl_s_ctrl(ov13858->vblank, vblank_def);
h_blank =
link_freq_configs[mode->link_freq_index].pixels_per_line
- ov13858->cur_mode->width;
--
1.9.1
