diff options
| author | Todor Tomov <todor.tomov@linaro.org> | 2018-11-13 09:03:07 -0500 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2018-12-03 14:27:17 -0500 |
| commit | 25f5c34bc8bfabc7406d7c88b73cdf05023d31f7 (patch) | |
| tree | fd22a5fae8f25f254942ff5df9ffd307260bea03 /drivers/media/platform/qcom/camss/camss-vfe.c | |
| parent | 9483a3f8e1b58ba1d7cd21687d8d0a63a015c36b (diff) | |
media: camss: Take in account sensor skip frames
When streaming is starting ask the sensor for its skip frames value.
Max supported frame skip is 29 frames, so clip it if it is higher.
Signed-off-by: Todor Tomov <todor.tomov@linaro.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'drivers/media/platform/qcom/camss/camss-vfe.c')
| -rw-r--r-- | drivers/media/platform/qcom/camss/camss-vfe.c | 23 |
1 files changed, 18 insertions, 5 deletions
diff --git a/drivers/media/platform/qcom/camss/camss-vfe.c b/drivers/media/platform/qcom/camss/camss-vfe.c index ed6a557de65d..a8c542fa647d 100644 --- a/drivers/media/platform/qcom/camss/camss-vfe.c +++ b/drivers/media/platform/qcom/camss/camss-vfe.c @@ -37,9 +37,9 @@ /* VFE halt timeout */ #define VFE_HALT_TIMEOUT_MS 100 /* Max number of frame drop updates per frame */ -#define VFE_FRAME_DROP_UPDATES 5 -/* Frame drop value. NOTE: VAL + UPDATES should not exceed 31 */ -#define VFE_FRAME_DROP_VAL 20 +#define VFE_FRAME_DROP_UPDATES 2 +/* Frame drop value. VAL + UPDATES - 1 should not exceed 31 */ +#define VFE_FRAME_DROP_VAL 30 #define VFE_NEXT_SOF_MS 500 @@ -659,7 +659,9 @@ static int vfe_enable_output(struct vfe_line *line) struct vfe_device *vfe = to_vfe(line); struct vfe_output *output = &line->output; const struct vfe_hw_ops *ops = vfe->ops; + struct media_entity *sensor; unsigned long flags; + unsigned int frame_skip = 0; unsigned int i; u16 ub_size; @@ -667,6 +669,17 @@ static int vfe_enable_output(struct vfe_line *line) if (!ub_size) return -EINVAL; + sensor = camss_find_sensor(&line->subdev.entity); + if (sensor) { + struct v4l2_subdev *subdev = + media_entity_to_v4l2_subdev(sensor); + + v4l2_subdev_call(subdev, sensor, g_skip_frames, &frame_skip); + /* Max frame skip is 29 frames */ + if (frame_skip > VFE_FRAME_DROP_VAL - 1) + frame_skip = VFE_FRAME_DROP_VAL - 1; + } + spin_lock_irqsave(&vfe->output_lock, flags); ops->reg_update_clear(vfe, line->id); @@ -695,10 +708,10 @@ static int vfe_enable_output(struct vfe_line *line) switch (output->state) { case VFE_OUTPUT_SINGLE: - vfe_output_frame_drop(vfe, output, 1); + vfe_output_frame_drop(vfe, output, 1 << frame_skip); break; case VFE_OUTPUT_CONTINUOUS: - vfe_output_frame_drop(vfe, output, 3); + vfe_output_frame_drop(vfe, output, 3 << frame_skip); break; default: vfe_output_frame_drop(vfe, output, 0); |