From: Laurent Pinchart Date: Tue, 11 May 2010 13:36:30 +0000 (-0300) Subject: V4L/DVB: videobuf: Remove the videobuf_sg_dma_map/unmap functions X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=952684035a91334dbe33b15063514cab5e7c6907;p=linux-beck.git 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 Signed-off-by: Mauro Carvalho Chehab --- 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 */