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authorLaurent Pinchart <laurent.pinchart@ideasonboard.com>2010-05-11 10:36:30 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2010-08-02 15:21:45 -0300
commit952684035a91334dbe33b15063514cab5e7c6907 (patch)
treefbd82c8a9af67ab15369a1f120feafaa8836aa14
parenta438d6da52b991b6896742a0f9aed80c2f82da87 (diff)
V4L/DVB: videobuf: Remove the videobuf_sg_dma_map/unmap functions
Instead of creating dirty wrappers around videobuf_dma_map/unmap that create a dummy videobuf_queue structure, modify videobuf_dma_map/unmap to take a device pointer argument and use it directly. The videobuf_sg_dma_map/unmap then become unused and can be removed. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
-rw-r--r--drivers/media/common/saa7146_fops.c2
-rw-r--r--drivers/media/video/bt8xx/bttv-risc.c2
-rw-r--r--drivers/media/video/cx23885/cx23885-core.c2
-rw-r--r--drivers/media/video/cx88/cx88-alsa.c4
-rw-r--r--drivers/media/video/cx88/cx88-core.c2
-rw-r--r--drivers/media/video/omap24xxcam.c2
-rw-r--r--drivers/media/video/pxa_camera.c2
-rw-r--r--drivers/media/video/saa7134/saa7134-alsa.c10
-rw-r--r--drivers/media/video/saa7134/saa7134-core.c2
-rw-r--r--drivers/media/video/videobuf-dma-sg.c32
-rw-r--r--drivers/staging/cx25821/cx25821-alsa.c4
-rw-r--r--drivers/staging/cx25821/cx25821-core.c2
-rw-r--r--include/media/videobuf-dma-sg.h20
13 files changed, 34 insertions, 52 deletions
diff --git a/drivers/media/common/saa7146_fops.c b/drivers/media/common/saa7146_fops.c
index 7364b9642d00..4da2a54cb8bd 100644
--- a/drivers/media/common/saa7146_fops.c
+++ b/drivers/media/common/saa7146_fops.c
@@ -57,7 +57,7 @@ void saa7146_dma_free(struct saa7146_dev *dev,struct videobuf_queue *q,
BUG_ON(in_interrupt());
videobuf_waiton(&buf->vb,0,0);
- videobuf_dma_unmap(q, dma);
+ videobuf_dma_unmap(q->dev, dma);
videobuf_dma_free(dma);
buf->vb.state = VIDEOBUF_NEEDS_INIT;
}
diff --git a/drivers/media/video/bt8xx/bttv-risc.c b/drivers/media/video/bt8xx/bttv-risc.c
index c24b1c100e13..0fa9f39f37a3 100644
--- a/drivers/media/video/bt8xx/bttv-risc.c
+++ b/drivers/media/video/bt8xx/bttv-risc.c
@@ -583,7 +583,7 @@ bttv_dma_free(struct videobuf_queue *q,struct bttv *btv, struct bttv_buffer *buf
BUG_ON(in_interrupt());
videobuf_waiton(&buf->vb,0,0);
- videobuf_dma_unmap(q, dma);
+ videobuf_dma_unmap(q->dev, dma);
videobuf_dma_free(dma);
btcx_riscmem_free(btv->c.pci,&buf->bottom);
btcx_riscmem_free(btv->c.pci,&buf->top);
diff --git a/drivers/media/video/cx23885/cx23885-core.c b/drivers/media/video/cx23885/cx23885-core.c
index 0dde57e96d30..161ae7316c95 100644
--- a/drivers/media/video/cx23885/cx23885-core.c
+++ b/drivers/media/video/cx23885/cx23885-core.c
@@ -1142,7 +1142,7 @@ void cx23885_free_buffer(struct videobuf_queue *q, struct cx23885_buffer *buf)
BUG_ON(in_interrupt());
videobuf_waiton(&buf->vb, 0, 0);
- videobuf_dma_unmap(q, dma);
+ videobuf_dma_unmap(q->dev, dma);
videobuf_dma_free(dma);
btcx_riscmem_free(to_pci_dev(q->dev), &buf->risc);
buf->vb.state = VIDEOBUF_NEEDS_INIT;
diff --git a/drivers/media/video/cx88/cx88-alsa.c b/drivers/media/video/cx88/cx88-alsa.c
index 33082c96745e..07fe905f6575 100644
--- a/drivers/media/video/cx88/cx88-alsa.c
+++ b/drivers/media/video/cx88/cx88-alsa.c
@@ -283,7 +283,7 @@ static int dsp_buffer_free(snd_cx88_card_t *chip)
BUG_ON(!chip->dma_size);
dprintk(2,"Freeing buffer\n");
- videobuf_sg_dma_unmap(&chip->pci->dev, chip->dma_risc);
+ videobuf_dma_unmap(&chip->pci->dev, chip->dma_risc);
videobuf_dma_free(chip->dma_risc);
btcx_riscmem_free(chip->pci,&chip->buf->risc);
kfree(chip->buf);
@@ -409,7 +409,7 @@ static int snd_cx88_hw_params(struct snd_pcm_substream * substream,
if (ret < 0)
goto error;
- ret = videobuf_sg_dma_map(&chip->pci->dev, dma);
+ ret = videobuf_dma_map(&chip->pci->dev, dma);
if (ret < 0)
goto error;
diff --git a/drivers/media/video/cx88/cx88-core.c b/drivers/media/video/cx88/cx88-core.c
index 8b21457111b1..85eb266fb351 100644
--- a/drivers/media/video/cx88/cx88-core.c
+++ b/drivers/media/video/cx88/cx88-core.c
@@ -218,7 +218,7 @@ cx88_free_buffer(struct videobuf_queue *q, struct cx88_buffer *buf)
BUG_ON(in_interrupt());
videobuf_waiton(&buf->vb,0,0);
- videobuf_dma_unmap(q, dma);
+ videobuf_dma_unmap(q->dev, dma);
videobuf_dma_free(dma);
btcx_riscmem_free(to_pci_dev(q->dev), &buf->risc);
buf->vb.state = VIDEOBUF_NEEDS_INIT;
diff --git a/drivers/media/video/omap24xxcam.c b/drivers/media/video/omap24xxcam.c
index f85b2ed8a2d8..926a5aa6f7f8 100644
--- a/drivers/media/video/omap24xxcam.c
+++ b/drivers/media/video/omap24xxcam.c
@@ -426,7 +426,7 @@ static void omap24xxcam_vbq_release(struct videobuf_queue *vbq,
dma->direction);
dma->direction = DMA_NONE;
} else {
- videobuf_dma_unmap(vbq, videobuf_to_dma(vb));
+ videobuf_dma_unmap(vbq->dev, videobuf_to_dma(vb));
videobuf_dma_free(videobuf_to_dma(vb));
}
diff --git a/drivers/media/video/pxa_camera.c b/drivers/media/video/pxa_camera.c
index fb242f6cfb1f..5835acf7fa7a 100644
--- a/drivers/media/video/pxa_camera.c
+++ b/drivers/media/video/pxa_camera.c
@@ -276,7 +276,7 @@ static void free_buffer(struct videobuf_queue *vq, struct pxa_buffer *buf)
* longer in STATE_QUEUED or STATE_ACTIVE
*/
videobuf_waiton(&buf->vb, 0, 0);
- videobuf_dma_unmap(vq, dma);
+ videobuf_dma_unmap(vq->dev, dma);
videobuf_dma_free(dma);
for (i = 0; i < ARRAY_SIZE(buf->dmas); i++) {
diff --git a/drivers/media/video/saa7134/saa7134-alsa.c b/drivers/media/video/saa7134/saa7134-alsa.c
index d3bd82ad010a..5bca2abb31e6 100644
--- a/drivers/media/video/saa7134/saa7134-alsa.c
+++ b/drivers/media/video/saa7134/saa7134-alsa.c
@@ -630,7 +630,7 @@ static int snd_card_saa7134_hw_params(struct snd_pcm_substream * substream,
/* release the old buffer */
if (substream->runtime->dma_area) {
saa7134_pgtable_free(dev->pci, &dev->dmasound.pt);
- videobuf_sg_dma_unmap(&dev->pci->dev, &dev->dmasound.dma);
+ videobuf_dma_unmap(&dev->pci->dev, &dev->dmasound.dma);
dsp_buffer_free(dev);
substream->runtime->dma_area = NULL;
}
@@ -646,12 +646,12 @@ static int snd_card_saa7134_hw_params(struct snd_pcm_substream * substream,
return err;
}
- if (0 != (err = videobuf_sg_dma_map(&dev->pci->dev, &dev->dmasound.dma))) {
+ if (0 != (err = videobuf_dma_map(&dev->pci->dev, &dev->dmasound.dma))) {
dsp_buffer_free(dev);
return err;
}
if (0 != (err = saa7134_pgtable_alloc(dev->pci,&dev->dmasound.pt))) {
- videobuf_sg_dma_unmap(&dev->pci->dev, &dev->dmasound.dma);
+ videobuf_dma_unmap(&dev->pci->dev, &dev->dmasound.dma);
dsp_buffer_free(dev);
return err;
}
@@ -660,7 +660,7 @@ static int snd_card_saa7134_hw_params(struct snd_pcm_substream * substream,
dev->dmasound.dma.sglen,
0))) {
saa7134_pgtable_free(dev->pci, &dev->dmasound.pt);
- videobuf_sg_dma_unmap(&dev->pci->dev, &dev->dmasound.dma);
+ videobuf_dma_unmap(&dev->pci->dev, &dev->dmasound.dma);
dsp_buffer_free(dev);
return err;
}
@@ -696,7 +696,7 @@ static int snd_card_saa7134_hw_free(struct snd_pcm_substream * substream)
if (substream->runtime->dma_area) {
saa7134_pgtable_free(dev->pci, &dev->dmasound.pt);
- videobuf_sg_dma_unmap(&dev->pci->dev, &dev->dmasound.dma);
+ videobuf_dma_unmap(&dev->pci->dev, &dev->dmasound.dma);
dsp_buffer_free(dev);
substream->runtime->dma_area = NULL;
}
diff --git a/drivers/media/video/saa7134/saa7134-core.c b/drivers/media/video/saa7134/saa7134-core.c
index 90f231881297..40bc635e8a3f 100644
--- a/drivers/media/video/saa7134/saa7134-core.c
+++ b/drivers/media/video/saa7134/saa7134-core.c
@@ -256,7 +256,7 @@ void saa7134_dma_free(struct videobuf_queue *q,struct saa7134_buf *buf)
BUG_ON(in_interrupt());
videobuf_waiton(&buf->vb,0,0);
- videobuf_dma_unmap(q, dma);
+ videobuf_dma_unmap(q->dev, dma);
videobuf_dma_free(dma);
buf->vb.state = VIDEOBUF_NEEDS_INIT;
}
diff --git a/drivers/media/video/videobuf-dma-sg.c b/drivers/media/video/videobuf-dma-sg.c
index a9b109178578..17b1f89e8133 100644
--- a/drivers/media/video/videobuf-dma-sg.c
+++ b/drivers/media/video/videobuf-dma-sg.c
@@ -235,7 +235,7 @@ int videobuf_dma_init_overlay(struct videobuf_dmabuf *dma, int direction,
}
EXPORT_SYMBOL_GPL(videobuf_dma_init_overlay);
-int videobuf_dma_map(struct videobuf_queue *q, struct videobuf_dmabuf *dma)
+int videobuf_dma_map(struct device *dev, struct videobuf_dmabuf *dma)
{
MAGIC_CHECK(dma->magic, MAGIC_DMABUF);
BUG_ON(0 == dma->nr_pages);
@@ -263,7 +263,7 @@ int videobuf_dma_map(struct videobuf_queue *q, struct videobuf_dmabuf *dma)
return -ENOMEM;
}
if (!dma->bus_addr) {
- dma->sglen = dma_map_sg(q->dev, dma->sglist,
+ dma->sglen = dma_map_sg(dev, dma->sglist,
dma->nr_pages, dma->direction);
if (0 == dma->sglen) {
printk(KERN_WARNING
@@ -279,14 +279,14 @@ int videobuf_dma_map(struct videobuf_queue *q, struct videobuf_dmabuf *dma)
}
EXPORT_SYMBOL_GPL(videobuf_dma_map);
-int videobuf_dma_unmap(struct videobuf_queue *q, struct videobuf_dmabuf *dma)
+int videobuf_dma_unmap(struct device *dev, struct videobuf_dmabuf *dma)
{
MAGIC_CHECK(dma->magic, MAGIC_DMABUF);
if (!dma->sglen)
return 0;
- dma_unmap_sg(q->dev, dma->sglist, dma->sglen, dma->direction);
+ dma_unmap_sg(dev, dma->sglist, dma->sglen, dma->direction);
vfree(dma->sglist);
dma->sglist = NULL;
@@ -322,28 +322,6 @@ EXPORT_SYMBOL_GPL(videobuf_dma_free);
/* --------------------------------------------------------------------- */
-int videobuf_sg_dma_map(struct device *dev, struct videobuf_dmabuf *dma)
-{
- struct videobuf_queue q;
-
- q.dev = dev;
-
- return videobuf_dma_map(&q, dma);
-}
-EXPORT_SYMBOL_GPL(videobuf_sg_dma_map);
-
-int videobuf_sg_dma_unmap(struct device *dev, struct videobuf_dmabuf *dma)
-{
- struct videobuf_queue q;
-
- q.dev = dev;
-
- return videobuf_dma_unmap(&q, dma);
-}
-EXPORT_SYMBOL_GPL(videobuf_sg_dma_unmap);
-
-/* --------------------------------------------------------------------- */
-
static void videobuf_vm_open(struct vm_area_struct *vma)
{
struct videobuf_mapping *map = vma->vm_private_data;
@@ -520,7 +498,7 @@ static int __videobuf_iolock(struct videobuf_queue *q,
default:
BUG();
}
- err = videobuf_dma_map(q, &mem->dma);
+ err = videobuf_dma_map(q->dev, &mem->dma);
if (0 != err)
return err;
diff --git a/drivers/staging/cx25821/cx25821-alsa.c b/drivers/staging/cx25821/cx25821-alsa.c
index 1798975a69bd..4ce8790b05ec 100644
--- a/drivers/staging/cx25821/cx25821-alsa.c
+++ b/drivers/staging/cx25821/cx25821-alsa.c
@@ -331,7 +331,7 @@ static int dsp_buffer_free(struct cx25821_audio_dev *chip)
BUG_ON(!chip->dma_size);
dprintk(2, "Freeing buffer\n");
- videobuf_sg_dma_unmap(&chip->pci->dev, chip->dma_risc);
+ videobuf_dma_unmap(&chip->pci->dev, chip->dma_risc);
videobuf_dma_free(chip->dma_risc);
btcx_riscmem_free(chip->pci, &chip->buf->risc);
kfree(chip->buf);
@@ -470,7 +470,7 @@ static int snd_cx25821_hw_params(struct snd_pcm_substream *substream,
if (ret < 0)
goto error;
- ret = videobuf_sg_dma_map(&chip->pci->dev, dma);
+ ret = videobuf_dma_map(&chip->pci->dev, dma);
if (ret < 0)
goto error;
diff --git a/drivers/staging/cx25821/cx25821-core.c b/drivers/staging/cx25821/cx25821-core.c
index be44195783d4..c487c19256b9 100644
--- a/drivers/staging/cx25821/cx25821-core.c
+++ b/drivers/staging/cx25821/cx25821-core.c
@@ -1320,7 +1320,7 @@ void cx25821_free_buffer(struct videobuf_queue *q, struct cx25821_buffer *buf)
BUG_ON(in_interrupt());
videobuf_waiton(&buf->vb, 0, 0);
- videobuf_dma_unmap(q, dma);
+ videobuf_dma_unmap(q->dev, dma);
videobuf_dma_free(dma);
btcx_riscmem_free(to_pci_dev(q->dev), &buf->risc);
buf->vb.state = VIDEOBUF_NEEDS_INIT;
diff --git a/include/media/videobuf-dma-sg.h b/include/media/videobuf-dma-sg.h
index a195f3b9c00a..80130100e450 100644
--- a/include/media/videobuf-dma-sg.h
+++ b/include/media/videobuf-dma-sg.h
@@ -87,6 +87,16 @@ struct videobuf_dma_sg_memory {
struct videobuf_dmabuf dma;
};
+/*
+ * Scatter-gather DMA buffer API.
+ *
+ * These functions provide a simple way to create a page list and a
+ * scatter-gather list from a kernel, userspace of physical address and map the
+ * memory for DMA operation.
+ *
+ * Despite the name, this is totally unrelated to videobuf, except that
+ * videobuf-dma-sg uses the same API internally.
+ */
void videobuf_dma_init(struct videobuf_dmabuf *dma);
int videobuf_dma_init_user(struct videobuf_dmabuf *dma, int direction,
unsigned long data, unsigned long size);
@@ -96,8 +106,8 @@ int videobuf_dma_init_overlay(struct videobuf_dmabuf *dma, int direction,
dma_addr_t addr, int nr_pages);
int videobuf_dma_free(struct videobuf_dmabuf *dma);
-int videobuf_dma_map(struct videobuf_queue *q, struct videobuf_dmabuf *dma);
-int videobuf_dma_unmap(struct videobuf_queue *q, struct videobuf_dmabuf *dma);
+int videobuf_dma_map(struct device *dev, struct videobuf_dmabuf *dma);
+int videobuf_dma_unmap(struct device *dev, struct videobuf_dmabuf *dma);
struct videobuf_dmabuf *videobuf_to_dma(struct videobuf_buffer *buf);
void *videobuf_sg_alloc(size_t size);
@@ -111,11 +121,5 @@ void videobuf_queue_sg_init(struct videobuf_queue *q,
unsigned int msize,
void *priv);
-/*FIXME: these variants are used only on *-alsa code, where videobuf is
- * used without queue
- */
-int videobuf_sg_dma_map(struct device *dev, struct videobuf_dmabuf *dma);
-int videobuf_sg_dma_unmap(struct device *dev, struct videobuf_dmabuf *dma);
-
#endif /* _VIDEOBUF_DMA_SG_H */

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