From 54f4bc2f2aada71a681b79b64cf74ca6e8c5d26c Mon Sep 17 00:00:00 2001 From: Steve Longerbeam Date: Tue, 15 Jan 2019 17:16:08 -0200 Subject: [PATCH] media: imx: capture: Allow event subscribe/unsubscribe 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 Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/staging/media/imx/imx-media-capture.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/drivers/staging/media/imx/imx-media-capture.c b/drivers/staging/media/imx/imx-media-capture.c index a93bd7f..f92edee 100644 --- a/drivers/staging/media/imx/imx-media-capture.c +++ b/drivers/staging/media/imx/imx-media-capture.c @@ -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, }; /* -- 2.7.4