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media: tegra-video: Add support for V4L2_EVENT_SOURCE_CHANGE

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Current implementation uses v4l2_ctrl_subscribe_event() and this
does not handle V4L2_EVENT_SOURCE_CHANGE.

So, update driver to handle V4L2_EVENT_SOURCE_CHANGE.

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 18:02:37 +01:00
committed by Mauro Carvalho Chehab
parent 6a4d30ce09
commit 2be21e6834
1 changed files with 13 additions and 1 deletions
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14
drivers/staging/media/tegra-video/vi.c
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@@ -642,6 +642,18 @@ static int tegra_channel_set_subdev_active_fmt(struct tegra_vi_channel *chan)
return 0;
}
static int
tegra_channel_subscribe_event(struct v4l2_fh *fh,
const struct v4l2_event_subscription *sub)
{
switch (sub->type) {
case V4L2_EVENT_SOURCE_CHANGE:
return v4l2_event_subscribe(fh, sub, 4, NULL);
}
return v4l2_ctrl_subscribe_event(fh, sub);
}
static int tegra_channel_g_selection(struct file *file, void *priv,
struct v4l2_selection *sel)
{
@@ -904,7 +916,7 @@ static const struct v4l2_ioctl_ops tegra_channel_ioctl_ops = {
.vidioc_expbuf = vb2_ioctl_expbuf,
.vidioc_streamon = vb2_ioctl_streamon,
.vidioc_streamoff = vb2_ioctl_streamoff,
.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
.vidioc_subscribe_event = tegra_channel_subscribe_event,
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
.vidioc_g_selection = tegra_channel_g_selection,
.vidioc_s_selection = tegra_channel_s_selection,