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| author | Hans Verkuil <hans.verkuil@cisco.com> | 2011-06-07 15:20:23 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-07-27 22:53:20 +0200 |
| commit | c7a52f8dced9ee325b8e3a16a5ac07d191fc3d9b (patch) | |
| tree | c4c275c829da006e0f901293c87b74abea8e12a0 /drivers/media/video/vivi.c | |
| parent | [media] V4L2 spec: document control events (diff) | |
| download | linux-c7a52f8dced9ee325b8e3a16a5ac07d191fc3d9b.tar.xz linux-c7a52f8dced9ee325b8e3a16a5ac07d191fc3d9b.zip | |
[media] vivi: support control events
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/vivi.c')
| -rw-r--r-- | drivers/media/video/vivi.c | 28 |
1 files changed, 26 insertions, 2 deletions
diff --git a/drivers/media/video/vivi.c b/drivers/media/video/vivi.c index 2f0a1b40dd29..e81c10607bb2 100644 --- a/drivers/media/video/vivi.c +++ b/drivers/media/video/vivi.c @@ -31,6 +31,7 @@ #include <media/v4l2-ioctl.h> #include <media/v4l2-ctrls.h> #include <media/v4l2-fh.h> +#include <media/v4l2-event.h> #include <media/v4l2-common.h> #define VIVI_MODULE_NAME "vivi" @@ -978,12 +979,26 @@ static int vidioc_s_input(struct file *file, void *priv, unsigned int i) if (i >= NUM_INPUTS) return -EINVAL; + if (i == dev->input) + return 0; + dev->input = i; precalculate_bars(dev); precalculate_line(dev); return 0; } +static int vidioc_subscribe_event(struct v4l2_fh *fh, + struct v4l2_event_subscription *sub) +{ + switch (sub->type) { + case V4L2_EVENT_CTRL: + return v4l2_ctrl_subscribe_fh(fh, sub, 0); + default: + return -EINVAL; + } +} + /* --- controls ---------------------------------------------- */ static int vivi_g_volatile_ctrl(struct v4l2_ctrl *ctrl) @@ -1022,10 +1037,17 @@ static unsigned int vivi_poll(struct file *file, struct poll_table_struct *wait) { struct vivi_dev *dev = video_drvdata(file); + struct v4l2_fh *fh = file->private_data; struct vb2_queue *q = &dev->vb_vidq; + unsigned int res; dprintk(dev, 1, "%s\n", __func__); - return vb2_poll(q, file, wait); + res = vb2_poll(q, file, wait); + if (v4l2_event_pending(fh)) + res |= POLLPRI; + else + poll_wait(file, &fh->events->wait, wait); + return res; } static int vivi_close(struct file *file) @@ -1132,7 +1154,7 @@ static const struct v4l2_ctrl_config vivi_ctrl_string = { static const struct v4l2_file_operations vivi_fops = { .owner = THIS_MODULE, - .open = v4l2_fh_open, + .open = v4l2_fh_open, .release = vivi_close, .read = vivi_read, .poll = vivi_poll, @@ -1156,6 +1178,8 @@ static const struct v4l2_ioctl_ops vivi_ioctl_ops = { .vidioc_s_input = vidioc_s_input, .vidioc_streamon = vidioc_streamon, .vidioc_streamoff = vidioc_streamoff, + .vidioc_subscribe_event = vidioc_subscribe_event, + .vidioc_unsubscribe_event = v4l2_event_unsubscribe, }; static struct video_device vivi_template = { |