diff options
| author | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2010-05-11 10:36:31 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2010-08-02 15:22:19 -0300 |
| commit | fecfedeb27ab9497cbdd2c6fb7972082a7ed9263 (patch) | |
| tree | e81b9ee9c9c0278849d92f0b778ea964fa6f33b3 /drivers/staging | |
| parent | 952684035a91334dbe33b15063514cab5e7c6907 (diff) | |
V4L/DVB: Remove videobuf_sg_alloc abuse
The cx88 and cx25821 drivers abuse videobuf_buffer to handle audio data.
Remove the abuse by creating private audio buffer structures with a
videobuf_dmabuf field.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/staging')
| -rw-r--r-- | drivers/staging/cx25821/cx25821-alsa.c | 29 |
1 files changed, 14 insertions, 15 deletions
diff --git a/drivers/staging/cx25821/cx25821-alsa.c b/drivers/staging/cx25821/cx25821-alsa.c index 4ce8790b05e..0771a6a313a 100644 --- a/drivers/staging/cx25821/cx25821-alsa.c +++ b/drivers/staging/cx25821/cx25821-alsa.c @@ -55,6 +55,12 @@ static struct snd_card *snd_cx25821_cards[SNDRV_CARDS]; static int devno; +struct cx25821_audio_buffer { + unsigned int bpl; + struct btcx_riscmem risc; + struct videobuf_dmabuf dma; +}; + struct cx25821_audio_dev { struct cx25821_dev *dev; struct cx25821_dmaqueue q; @@ -77,7 +83,7 @@ struct cx25821_audio_dev { struct videobuf_dmabuf *dma_risc; - struct cx25821_buffer *buf; + struct cx25821_audio_buffer *buf; struct snd_pcm_substream *substream; }; @@ -136,7 +142,7 @@ MODULE_PARM_DESC(debug, "enable debug messages"); static int _cx25821_start_audio_dma(struct cx25821_audio_dev *chip) { - struct cx25821_buffer *buf = chip->buf; + struct cx25821_audio_buffer *buf = chip->buf; struct cx25821_dev *dev = chip->dev; struct sram_channel *audio_ch = &cx25821_sram_channels[AUDIO_SRAM_CHANNEL]; @@ -432,7 +438,7 @@ static int snd_cx25821_hw_params(struct snd_pcm_substream *substream, struct cx25821_audio_dev *chip = snd_pcm_substream_chip(substream); struct videobuf_dmabuf *dma; - struct cx25821_buffer *buf; + struct cx25821_audio_buffer *buf; int ret; if (substream->runtime->dma_area) { @@ -447,25 +453,19 @@ static int snd_cx25821_hw_params(struct snd_pcm_substream *substream, BUG_ON(!chip->dma_size); BUG_ON(chip->num_periods & (chip->num_periods - 1)); - buf = videobuf_sg_alloc(sizeof(*buf)); + buf = kzalloc(sizeof(*buf), GFP_KERNEL); if (NULL == buf) return -ENOMEM; if (chip->period_size > AUDIO_LINE_SIZE) chip->period_size = AUDIO_LINE_SIZE; - buf->vb.memory = V4L2_MEMORY_MMAP; - buf->vb.field = V4L2_FIELD_NONE; - buf->vb.width = chip->period_size; buf->bpl = chip->period_size; - buf->vb.height = chip->num_periods; - buf->vb.size = chip->dma_size; - dma = videobuf_to_dma(&buf->vb); + dma = &buf->dma; videobuf_dma_init(dma); - ret = videobuf_dma_init_kernel(dma, PCI_DMA_FROMDEVICE, - (PAGE_ALIGN(buf->vb.size) >> + (PAGE_ALIGN(chip->dma_size) >> PAGE_SHIFT)); if (ret < 0) goto error; @@ -476,7 +476,8 @@ static int snd_cx25821_hw_params(struct snd_pcm_substream *substream, ret = cx25821_risc_databuffer_audio(chip->pci, &buf->risc, dma->sglist, - buf->vb.width, buf->vb.height, 1); + chip->period_size, chip->num_periods, + 1); if (ret < 0) { printk(KERN_INFO "DEBUG: ERROR after cx25821_risc_databuffer_audio()\n"); @@ -488,8 +489,6 @@ static int snd_cx25821_hw_params(struct snd_pcm_substream *substream, buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma); buf->risc.jmp[2] = cpu_to_le32(0); /* bits 63-32 */ - buf->vb.state = VIDEOBUF_PREPARED; - chip->buf = buf; chip->dma_risc = dma; |