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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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8
drivers/media/common/saa7146_vbi.c
View File

@@ -236,7 +236,7 @@ static int buffer_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,e
}
if (buf->vb.size != size)
saa7146_dma_free(dev,buf);
saa7146_dma_free(dev,q,buf);
if (STATE_NEEDS_INIT == buf->vb.state) {
buf->vb.width = llength;
@@ -247,7 +247,7 @@ static int buffer_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,e
saa7146_pgtable_free(dev->pci, &buf->pt[2]);
saa7146_pgtable_alloc(dev->pci, &buf->pt[2]);
err = videobuf_iolock(dev->pci,&buf->vb, NULL);
err = videobuf_iolock(q,&buf->vb, NULL);
if (err)
goto oops;
err = saa7146_pgtable_build_single(dev->pci, &buf->pt[2], buf->vb.dma.sglist, buf->vb.dma.sglen);
@@ -261,7 +261,7 @@ static int buffer_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,e
oops:
DEB_VBI(("error out.\n"));
saa7146_dma_free(dev,buf);
saa7146_dma_free(dev,q,buf);
return err;
}
@@ -301,7 +301,7 @@ static void buffer_release(struct videobuf_queue *q, struct videobuf_buffer *vb)
struct saa7146_buf *buf = (struct saa7146_buf *)vb;
DEB_VBI(("vb:%p\n",vb));
saa7146_dma_free(dev,buf);
saa7146_dma_free(dev,q,buf);
}
static struct videobuf_queue_ops vbi_qops = {