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media: tegra-video: Add support for EDID ioctl ops 

This patch adds support for EDID get and set v4l2 ioctl ops to use
with HDMI to CSI bridges.

Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Sowjanya Komatineni 2020-12-11 18:02:35 +01:00 committed by Mauro Carvalho Chehab
parent 4281d115a4
commit 52b21a0aed
1 changed files with 28 additions and 0 deletions
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28
drivers/staging/media/tegra-video/vi.c
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@ -721,6 +721,32 @@ static int tegra_channel_s_selection(struct file *file, void *fh,
return ret;
}
static int tegra_channel_g_edid(struct file *file, void *fh,
struct v4l2_edid *edid)
{
struct tegra_vi_channel *chan = video_drvdata(file);
struct v4l2_subdev *subdev;
subdev = tegra_channel_get_remote_source_subdev(chan);
if (!v4l2_subdev_has_op(subdev, pad, get_edid))
return -ENOTTY;
return v4l2_subdev_call(subdev, pad, get_edid, edid);
}
static int tegra_channel_s_edid(struct file *file, void *fh,
struct v4l2_edid *edid)
{
struct tegra_vi_channel *chan = video_drvdata(file);
struct v4l2_subdev *subdev;
subdev = tegra_channel_get_remote_source_subdev(chan);
if (!v4l2_subdev_has_op(subdev, pad, set_edid))
return -ENOTTY;
return v4l2_subdev_call(subdev, pad, set_edid, edid);
}
static int tegra_channel_g_dv_timings(struct file *file, void *fh,
struct v4l2_dv_timings *timings)
{
@ -873,6 +899,8 @@ static const struct v4l2_ioctl_ops tegra_channel_ioctl_ops = {
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
.vidioc_g_selection = tegra_channel_g_selection,
.vidioc_s_selection = tegra_channel_s_selection,
.vidioc_g_edid = tegra_channel_g_edid,
.vidioc_s_edid = tegra_channel_s_edid,
.vidioc_g_dv_timings = tegra_channel_g_dv_timings,
.vidioc_s_dv_timings = tegra_channel_s_dv_timings,
.vidioc_query_dv_timings = tegra_channel_query_dv_timings,