diff options
| author | Andy Walls <awalls@radix.net> | 2008-12-09 03:02:45 +0100 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2008-12-30 12:38:29 +0100 |
| commit | 66c2a6b0bc0b394d215768610d96f44cf97052ac (patch) | |
| tree | a88946e764eb5a829a920c5027b4d92922cc54ee /drivers/media/video/cx18/cx18-queue.h | |
| parent | V4L/DVB (9800): cx18: Eliminate q_io from stream buffer handling (diff) | |
| download | linux-66c2a6b0bc0b394d215768610d96f44cf97052ac.tar.xz linux-66c2a6b0bc0b394d215768610d96f44cf97052ac.zip | |
V4L/DVB (9801): cx18: Allow more than 63 capture buffers in rotation per stream
cx18: Allow more than 63 capture buffers in rotation per stream. Implement
q_busy to hold buffers the firmware has for use. q_free holds truly unused
buffers in a pool. New buffers are given to the firmware as soon as the
firmware returns one, if there are any to give to the firmware.
Signed-off-by: Andy Walls <awalls@radix.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/cx18/cx18-queue.h')
| -rw-r--r-- | drivers/media/video/cx18/cx18-queue.h | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/drivers/media/video/cx18/cx18-queue.h b/drivers/media/video/cx18/cx18-queue.h index d184e55ce624..456cec3bc28f 100644 --- a/drivers/media/video/cx18/cx18-queue.h +++ b/drivers/media/video/cx18/cx18-queue.h @@ -43,21 +43,21 @@ static inline void cx18_buf_sync_for_device(struct cx18_stream *s, void cx18_buf_swap(struct cx18_buffer *buf); /* cx18_queue utility functions */ -void _cx18_enqueue(struct cx18_stream *s, struct cx18_buffer *buf, - struct cx18_queue *q, int to_front); +struct cx18_queue *_cx18_enqueue(struct cx18_stream *s, struct cx18_buffer *buf, + struct cx18_queue *q, int to_front); static inline -void cx18_enqueue(struct cx18_stream *s, struct cx18_buffer *buf, - struct cx18_queue *q) +struct cx18_queue *cx18_enqueue(struct cx18_stream *s, struct cx18_buffer *buf, + struct cx18_queue *q) { - _cx18_enqueue(s, buf, q, 0); /* FIFO */ + return _cx18_enqueue(s, buf, q, 0); /* FIFO */ } static inline -void cx18_push(struct cx18_stream *s, struct cx18_buffer *buf, - struct cx18_queue *q) +struct cx18_queue *cx18_push(struct cx18_stream *s, struct cx18_buffer *buf, + struct cx18_queue *q) { - _cx18_enqueue(s, buf, q, 1); /* LIFO */ + return _cx18_enqueue(s, buf, q, 1); /* LIFO */ } void cx18_queue_init(struct cx18_queue *q); |