3d05913d89
Renamed structure member name to be more specific to type in anticipation
of updating to the v4l2_device/v4l2_subdev framework. Too many objects named
"dev" and /v4l2_\{0,1\}dev/ would be to confusing.
Signed-off-by: Andy Walls <awalls@radix.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
71 lines
2.2 KiB
C
71 lines
2.2 KiB
C
/*
|
|
* cx18 buffer queues
|
|
*
|
|
* Derived from ivtv-queue.h
|
|
*
|
|
* Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl>
|
|
* Copyright (C) 2008 Andy Walls <awalls@radix.net>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
* 02111-1307 USA
|
|
*/
|
|
|
|
#define CX18_DMA_UNMAPPED ((u32) -1)
|
|
|
|
/* cx18_buffer utility functions */
|
|
|
|
static inline void cx18_buf_sync_for_cpu(struct cx18_stream *s,
|
|
struct cx18_buffer *buf)
|
|
{
|
|
pci_dma_sync_single_for_cpu(s->cx->pci_dev, buf->dma_handle,
|
|
s->buf_size, s->dma);
|
|
}
|
|
|
|
static inline void cx18_buf_sync_for_device(struct cx18_stream *s,
|
|
struct cx18_buffer *buf)
|
|
{
|
|
pci_dma_sync_single_for_device(s->cx->pci_dev, buf->dma_handle,
|
|
s->buf_size, s->dma);
|
|
}
|
|
|
|
void cx18_buf_swap(struct cx18_buffer *buf);
|
|
|
|
/* cx18_queue utility functions */
|
|
struct cx18_queue *_cx18_enqueue(struct cx18_stream *s, struct cx18_buffer *buf,
|
|
struct cx18_queue *q, int to_front);
|
|
|
|
static inline
|
|
struct cx18_queue *cx18_enqueue(struct cx18_stream *s, struct cx18_buffer *buf,
|
|
struct cx18_queue *q)
|
|
{
|
|
return _cx18_enqueue(s, buf, q, 0); /* FIFO */
|
|
}
|
|
|
|
static inline
|
|
struct cx18_queue *cx18_push(struct cx18_stream *s, struct cx18_buffer *buf,
|
|
struct cx18_queue *q)
|
|
{
|
|
return _cx18_enqueue(s, buf, q, 1); /* LIFO */
|
|
}
|
|
|
|
void cx18_queue_init(struct cx18_queue *q);
|
|
struct cx18_buffer *cx18_dequeue(struct cx18_stream *s, struct cx18_queue *q);
|
|
struct cx18_buffer *cx18_queue_get_buf(struct cx18_stream *s, u32 id,
|
|
u32 bytesused);
|
|
void cx18_flush_queues(struct cx18_stream *s);
|
|
|
|
/* cx18_stream utility functions */
|
|
int cx18_stream_alloc(struct cx18_stream *s);
|
|
void cx18_stream_free(struct cx18_stream *s);
|