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V4L/DVB (3516): Make video_buf more generic

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Video_buf were concerned to allow PCI devices to be used as
video capture devices. This patch extends video_buf features
by virtualizing pci-dependent functions and allowing other
type of devices to use it.
It is still DMA centric, although it may be used also by
devices that emulates scatter/gather behavior or a DMA device

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Mauro Carvalho Chehab
2006-03-10 12:29:15 -03:00
parent b2fd16b4ff
commit c7b0ac0546
26 changed files with 340 additions and 174 deletions
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5
drivers/media/common/saa7146_fops.c
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@ -50,14 +50,15 @@ void saa7146_res_free(struct saa7146_fh *fh, unsigned int bits)
/********************************************************************************/
/* common dma functions */
void saa7146_dma_free(struct saa7146_dev *dev,struct saa7146_buf *buf)
void saa7146_dma_free(struct saa7146_dev *dev,struct videobuf_queue *q,
struct saa7146_buf *buf)
{
DEB_EE(("dev:%p, buf:%p\n",dev,buf));
BUG_ON(in_interrupt());
videobuf_waiton(&buf->vb,0,0);
videobuf_dma_pci_unmap(dev->pci, &buf->vb.dma);
videobuf_dma_unmap(q, &buf->vb.dma);
videobuf_dma_free(&buf->vb.dma);
buf->vb.state = STATE_NEEDS_INIT;
}