[media] ivtv: add control event support

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

2 files changed, 10 insertions, 3 deletions

diff --git a/drivers/media/video/ivtv/ivtv-fileops.c b/drivers/media/video/ivtv/ivtv-fileops.c
index a7f54b010a5c..353142d01446 100644
--- a/drivers/media/video/ivtv/ivtv-fileops.c
+++ b/drivers/media/video/ivtv/ivtv-fileops.c
@@ -750,6 +750,7 @@ unsigned int ivtv_v4l2_enc_poll(struct file *filp, poll_table * wait)
         struct ivtv *itv = id->itv;
         struct ivtv_stream *s = &itv->streams[id->type];
         int eof = test_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
+        unsigned res = 0;
 
         /* Start a capture if there is none */
         if (!eof && !test_bit(IVTV_F_S_STREAMING, &s->s_flags)) {
@@ -769,12 +770,16 @@ unsigned int ivtv_v4l2_enc_poll(struct file *filp, poll_table * wait)
         /* add stream's waitq to the poll list */
         IVTV_DEBUG_HI_FILE("Encoder poll\n");
         poll_wait(filp, &s->waitq, wait);
+        if (v4l2_event_pending(&id->fh))
+                res |= POLLPRI;
+        else
+                poll_wait(filp, &id->fh.events->wait, wait);
 
         if (s->q_full.length || s->q_io.length)
-                return POLLIN | POLLRDNORM;
+                return res | POLLIN | POLLRDNORM;
         if (eof)
-                return POLLHUP;
-        return 0;
+                return res | POLLHUP;
+        return res;
 }
 
 void ivtv_stop_capture(struct ivtv_open_id *id, int gop_end)
diff --git a/drivers/media/video/ivtv/ivtv-ioctl.c b/drivers/media/video/ivtv/ivtv-ioctl.c
index 707399893de1..ff75d07097b2 100644
--- a/drivers/media/video/ivtv/ivtv-ioctl.c
+++ b/drivers/media/video/ivtv/ivtv-ioctl.c
@@ -1451,6 +1451,8 @@ static int ivtv_subscribe_event(struct v4l2_fh *fh, struct v4l2_event_subscripti
         case V4L2_EVENT_VSYNC:
         case V4L2_EVENT_EOS:
                 break;
+        case V4L2_EVENT_CTRL:
+                return v4l2_ctrl_subscribe_fh(fh, sub, 0);
         default:
                 return -EINVAL;
         }