linux/drivers/media/video/cx18/cx18-queue.h
Andy Walls 3d05913d89 V4L/DVB (10280): cx18: Rename structure members: dev to pci_dev and v4l2dev to video_dev
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>
2009-03-30 12:42:25 -03:00

72 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);