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media: imx: capture: Allow event subscribe/unsubscribe

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Implement the vidioc_(un)subscribe_event operations. Imx will allow
subscribing to the imx-specific frame interval error events, events
from subdevices (V4L2_EVENT_SOURCE_CHANGE), and control events.

Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Steve Longerbeam 2019-01-15 17:16:08 -02:00 committed by Mauro Carvalho Chehab
parent 958f047a25
commit 54f4bc2f2a
1 changed files with 18 additions and 0 deletions
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18
drivers/staging/media/imx/imx-media-capture.c
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@ -398,6 +398,21 @@ static int capture_s_parm(struct file *file, void *fh,
return 0;
}
static int capture_subscribe_event(struct v4l2_fh *fh,
const struct v4l2_event_subscription *sub)
{
switch (sub->type) {
case V4L2_EVENT_IMX_FRAME_INTERVAL_ERROR:
return v4l2_event_subscribe(fh, sub, 0, NULL);
case V4L2_EVENT_SOURCE_CHANGE:
return v4l2_src_change_event_subscribe(fh, sub);
case V4L2_EVENT_CTRL:
return v4l2_ctrl_subscribe_event(fh, sub);
default:
return -EINVAL;
}
}
static const struct v4l2_ioctl_ops capture_ioctl_ops = {
.vidioc_querycap = vidioc_querycap,
@ -427,6 +442,9 @@ static const struct v4l2_ioctl_ops capture_ioctl_ops = {
.vidioc_expbuf = vb2_ioctl_expbuf,
.vidioc_streamon = vb2_ioctl_streamon,
.vidioc_streamoff = vb2_ioctl_streamoff,
.vidioc_subscribe_event = capture_subscribe_event,
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
};
/*