media: imx: capture: Allow event subscribe/unsubscribe (54f4bc2f) · Commits · 戴 / test

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>

drivers/staging/media/imx/imx-media-capture.c

+18 −0

Original line number	Diff line number	Diff line
		@@ -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,
		};

		/*

Admin message