V4L/DVB (3516): Make video_buf more generic

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>

3 files changed, 11 insertions, 10 deletions

diff --git a/drivers/media/common/saa7146_fops.c b/drivers/media/common/saa7146_fops.c
index 3870fa948cc0..523ab3851c7b 100644
--- a/drivers/media/common/saa7146_fops.c
+++ b/drivers/media/common/saa7146_fops.c
@@ -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;
 }
diff --git a/drivers/media/common/saa7146_vbi.c b/drivers/media/common/saa7146_vbi.c
index 500bd3f05e16..063608462ebe 100644
--- a/drivers/media/common/saa7146_vbi.c
+++ b/drivers/media/common/saa7146_vbi.c
@@ -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 = {
diff --git a/drivers/media/common/saa7146_video.c b/drivers/media/common/saa7146_video.c
index 6b42713d97f4..e7079d1bd537 100644
--- a/drivers/media/common/saa7146_video.c
+++ b/drivers/media/common/saa7146_video.c
@@ -1275,7 +1275,7 @@ static int buffer_prepare(struct videobuf_queue *q,
             buf->vb.field  != field      ||
             buf->vb.field  != fh->video_fmt.field  ||
             buf->fmt       != &fh->video_fmt) {
-                saa7146_dma_free(dev,buf);
+                saa7146_dma_free(dev,q,buf);
         }
 
         if (STATE_NEEDS_INIT == buf->vb.state) {
@@ -1304,7 +1304,7 @@ static int buffer_prepare(struct videobuf_queue *q,
                         saa7146_pgtable_alloc(dev->pci, &buf->pt[0]);
                 }
 
-                err = videobuf_iolock(dev->pci,&buf->vb, &vv->ov_fb);
+                err = videobuf_iolock(q,&buf->vb, &vv->ov_fb);
                 if (err)
                         goto oops;
                 err = saa7146_pgtable_build(dev,buf);
@@ -1318,7 +1318,7 @@ static int buffer_prepare(struct videobuf_queue *q,
 
  oops:
         DEB_D(("error out.\n"));
-        saa7146_dma_free(dev,buf);
+        saa7146_dma_free(dev,q,buf);
 
         return err;
 }
@@ -1363,7 +1363,7 @@ static void buffer_release(struct videobuf_queue *q, struct videobuf_buffer *vb)
         struct saa7146_buf *buf = (struct saa7146_buf *)vb;
 
         DEB_CAP(("vbuf:%p\n",vb));
-        saa7146_dma_free(dev,buf);
+        saa7146_dma_free(dev,q,buf);
 }
 
 static struct videobuf_queue_ops video_qops = {