From 1b18e7a0be859911b22138ce27258687efc528b8 Mon Sep 17 00:00:00 2001 From: Sakari Ailus Date: Mon, 22 Oct 2012 17:10:16 -0300 Subject: [media] v4l: Tell user space we're using monotonic timestamps Set buffer timestamp flags for videobuf, videobuf2 and drivers that use neither. Signed-off-by: Sakari Ailus Acked-by: Laurent Pinchart Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/v4l2-core/videobuf2-core.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) (limited to 'drivers/media/v4l2-core/videobuf2-core.c') diff --git a/drivers/media/v4l2-core/videobuf2-core.c b/drivers/media/v4l2-core/videobuf2-core.c index 9f81be23a81f..85e3c221dadc 100644 --- a/drivers/media/v4l2-core/videobuf2-core.c +++ b/drivers/media/v4l2-core/videobuf2-core.c @@ -40,9 +40,10 @@ module_param(debug, int, 0644); #define call_qop(q, op, args...) \ (((q)->ops->op) ? ((q)->ops->op(args)) : 0) -#define V4L2_BUFFER_STATE_FLAGS (V4L2_BUF_FLAG_MAPPED | V4L2_BUF_FLAG_QUEUED | \ +#define V4L2_BUFFER_MASK_FLAGS (V4L2_BUF_FLAG_MAPPED | V4L2_BUF_FLAG_QUEUED | \ V4L2_BUF_FLAG_DONE | V4L2_BUF_FLAG_ERROR | \ - V4L2_BUF_FLAG_PREPARED) + V4L2_BUF_FLAG_PREPARED | \ + V4L2_BUF_FLAG_TIMESTAMP_MASK) /** * __vb2_buf_mem_alloc() - allocate video memory for the given buffer @@ -401,7 +402,8 @@ static void __fill_v4l2_buffer(struct vb2_buffer *vb, struct v4l2_buffer *b) /* * Clear any buffer state related flags. */ - b->flags &= ~V4L2_BUFFER_STATE_FLAGS; + b->flags &= ~V4L2_BUFFER_MASK_FLAGS; + b->flags |= V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; switch (vb->state) { case VB2_BUF_STATE_QUEUED: @@ -939,7 +941,7 @@ static void __fill_vb2_buffer(struct vb2_buffer *vb, const struct v4l2_buffer *b vb->v4l2_buf.field = b->field; vb->v4l2_buf.timestamp = b->timestamp; - vb->v4l2_buf.flags = b->flags & ~V4L2_BUFFER_STATE_FLAGS; + vb->v4l2_buf.flags = b->flags & ~V4L2_BUFFER_MASK_FLAGS; } /** -- cgit v1.2.3 From cd13823f5db3e66552801c04f0e761408ef17eb0 Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Wed, 30 Jan 2013 13:29:02 -0300 Subject: [media] videobuf2: don't return POLLERR when only polling for events If you only poll for events, then vb2_poll will return POLLPRI | POLLERR if no streaming is in progress. That's not right, it's perfectly valid to poll just for events. Cc: Pawel Osciak Cc: Marek Szyprowski Cc: Kyungmin Park Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/v4l2-core/videobuf2-core.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'drivers/media/v4l2-core/videobuf2-core.c') diff --git a/drivers/media/v4l2-core/videobuf2-core.c b/drivers/media/v4l2-core/videobuf2-core.c index d09be38dd377..db1235dcb328 100644 --- a/drivers/media/v4l2-core/videobuf2-core.c +++ b/drivers/media/v4l2-core/videobuf2-core.c @@ -1965,6 +1965,11 @@ unsigned int vb2_poll(struct vb2_queue *q, struct file *file, poll_table *wait) poll_wait(file, &fh->wait, wait); } + if (!V4L2_TYPE_IS_OUTPUT(q->type) && !(req_events & (POLLIN | POLLRDNORM))) + return res; + if (V4L2_TYPE_IS_OUTPUT(q->type) && !(req_events & (POLLOUT | POLLWRNORM))) + return res; + /* * Start file I/O emulator only if streaming API has not been used yet. */ -- cgit v1.2.3