diff options
| author | Hans Verkuil <hans.verkuil@cisco.com> | 2012-07-18 13:53:04 (GMT) |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-07-30 22:20:00 (GMT) |
| commit | 08eb85100d114a907e01c76d52d5c95eb4100d20 (patch) | |
| tree | 0571fce8026edbb5b3b4a81d2896c819513fa5b5 /drivers | |
| parent | b0d1499634503ea8947cd8694ada01b263f25ec4 (diff) | |
| download | linux-08eb85100d114a907e01c76d52d5c95eb4100d20.tar.xz | |
[media] v4l2-mem2mem: support events in v4l2_m2m_poll
v4l2_m2m_poll didn't support events, but that's essential if you want to
be able to use control events for example.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/media/video/v4l2-mem2mem.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/drivers/media/video/v4l2-mem2mem.c b/drivers/media/video/v4l2-mem2mem.c index 975d0fa..97b4831 100644 --- a/drivers/media/video/v4l2-mem2mem.c +++ b/drivers/media/video/v4l2-mem2mem.c @@ -19,6 +19,9 @@ #include <media/videobuf2-core.h> #include <media/v4l2-mem2mem.h> +#include <media/v4l2-dev.h> +#include <media/v4l2-fh.h> +#include <media/v4l2-event.h> MODULE_DESCRIPTION("Mem to mem device framework for videobuf"); MODULE_AUTHOR("Pawel Osciak, <pawel@osciak.com>"); @@ -407,11 +410,24 @@ EXPORT_SYMBOL_GPL(v4l2_m2m_streamoff); unsigned int v4l2_m2m_poll(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, struct poll_table_struct *wait) { + struct video_device *vfd = video_devdata(file); + unsigned long req_events = poll_requested_events(wait); struct vb2_queue *src_q, *dst_q; struct vb2_buffer *src_vb = NULL, *dst_vb = NULL; unsigned int rc = 0; unsigned long flags; + if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) { + struct v4l2_fh *fh = file->private_data; + + if (v4l2_event_pending(fh)) + rc = POLLPRI; + else if (req_events & POLLPRI) + poll_wait(file, &fh->wait, wait); + if (!(req_events & (POLLOUT | POLLWRNORM | POLLIN | POLLRDNORM))) + return rc; + } + src_q = v4l2_m2m_get_src_vq(m2m_ctx); dst_q = v4l2_m2m_get_dst_vq(m2m_ctx); @@ -422,7 +438,7 @@ unsigned int v4l2_m2m_poll(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, */ if ((!src_q->streaming || list_empty(&src_q->queued_list)) && (!dst_q->streaming || list_empty(&dst_q->queued_list))) { - rc = POLLERR; + rc |= POLLERR; goto end; } |