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authorTakashi Iwai <tiwai@suse.de>2012-09-20 20:29:12 -0700
committerTakashi Iwai <tiwai@suse.de>2012-09-23 11:24:42 +0200
commit9d069dc00b02b886abe3cab5e369140f7cd78965 (patch)
treed2f29878332a7c36a6c30128b67b2780c4a44f41 /include/sound/pcm.h
parent3d98c21d064bfbb8c6fddc659471acb4950320fa (diff)
ALSA: Make snd_sgbuf_get_{ptr|addr}() available for non-SG cases
Passing struct snd_dma_buffer pointer instead, so that they work no matter whether real SG buffer is used or not. This is a preliminary work for the HD-audio DSP loader code. Signed-off-by: Ian Minett <ian_minett@creativelabs.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'include/sound/pcm.h')
-rw-r--r--include/sound/pcm.h39
1 files changed, 14 insertions, 25 deletions
diff --git a/include/sound/pcm.h b/include/sound/pcm.h
index 669c85a7fb03..7e4e4e380106 100644
--- a/include/sound/pcm.h
+++ b/include/sound/pcm.h
@@ -983,53 +983,42 @@ static int snd_pcm_lib_alloc_vmalloc_32_buffer
_snd_pcm_lib_alloc_vmalloc_buffer \
(subs, size, GFP_KERNEL | GFP_DMA32 | __GFP_ZERO)
+#define snd_pcm_get_dma_buf(substream) ((substream)->runtime->dma_buffer_p)
+
#ifdef CONFIG_SND_DMA_SGBUF
/*
* SG-buffer handling
*/
#define snd_pcm_substream_sgbuf(substream) \
- ((substream)->runtime->dma_buffer_p->private_data)
-
-static inline dma_addr_t
-snd_pcm_sgbuf_get_addr(struct snd_pcm_substream *substream, unsigned int ofs)
-{
- struct snd_sg_buf *sg = snd_pcm_substream_sgbuf(substream);
- return snd_sgbuf_get_addr(sg, ofs);
-}
-
-static inline void *
-snd_pcm_sgbuf_get_ptr(struct snd_pcm_substream *substream, unsigned int ofs)
-{
- struct snd_sg_buf *sg = snd_pcm_substream_sgbuf(substream);
- return snd_sgbuf_get_ptr(sg, ofs);
-}
+ snd_pcm_get_dma_buf(substream)->private_data
struct page *snd_pcm_sgbuf_ops_page(struct snd_pcm_substream *substream,
unsigned long offset);
-unsigned int snd_pcm_sgbuf_get_chunk_size(struct snd_pcm_substream *substream,
- unsigned int ofs, unsigned int size);
-
#else /* !SND_DMA_SGBUF */
/*
* fake using a continuous buffer
*/
+#define snd_pcm_sgbuf_ops_page NULL
+#endif /* SND_DMA_SGBUF */
+
static inline dma_addr_t
snd_pcm_sgbuf_get_addr(struct snd_pcm_substream *substream, unsigned int ofs)
{
- return substream->runtime->dma_addr + ofs;
+ return snd_sgbuf_get_addr(snd_pcm_get_dma_buf(substream), ofs);
}
static inline void *
snd_pcm_sgbuf_get_ptr(struct snd_pcm_substream *substream, unsigned int ofs)
{
- return substream->runtime->dma_area + ofs;
+ return snd_sgbuf_get_ptr(snd_pcm_get_dma_buf(substream), ofs);
}
-#define snd_pcm_sgbuf_ops_page NULL
-
-#define snd_pcm_sgbuf_get_chunk_size(subs, ofs, size) (size)
-
-#endif /* SND_DMA_SGBUF */
+static inline unsigned int
+snd_pcm_sgbuf_get_chunk_size(struct snd_pcm_substream *substream,
+ unsigned int ofs, unsigned int size)
+{
+ return snd_sgbuf_get_chunk_size(snd_pcm_get_dma_buf(substream), ofs, size);
+}
/* handle mmap counter - PCM mmap callback should handle this counter properly */
static inline void snd_pcm_mmap_data_open(struct vm_area_struct *area)