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author | Takashi Iwai <tiwai@suse.de> | 2012-09-21 03:29:12 (GMT) |
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committer | Takashi Iwai <tiwai@suse.de> | 2012-09-23 09:24:42 (GMT) |
commit | 9d069dc00b02b886abe3cab5e369140f7cd78965 (patch) | |
tree | d2f29878332a7c36a6c30128b67b2780c4a44f41 /include | |
parent | 3d98c21d064bfbb8c6fddc659471acb4950320fa (diff) | |
download | linux-9d069dc00b02b886abe3cab5e369140f7cd78965.tar.xz |
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')
-rw-r--r-- | include/sound/memalloc.h | 27 | ||||
-rw-r--r-- | include/sound/pcm.h | 39 |
2 files changed, 39 insertions, 27 deletions
diff --git a/include/sound/memalloc.h b/include/sound/memalloc.h index c425062..844af65 100644 --- a/include/sound/memalloc.h +++ b/include/sound/memalloc.h @@ -98,8 +98,10 @@ static inline unsigned int snd_sgbuf_aligned_pages(size_t size) /* * return the physical address at the corresponding offset */ -static inline dma_addr_t snd_sgbuf_get_addr(struct snd_sg_buf *sgbuf, size_t offset) +static inline dma_addr_t snd_sgbuf_get_addr(struct snd_dma_buffer *dmab, + size_t offset) { + struct snd_sg_buf *sgbuf = dmab->private_data; dma_addr_t addr = sgbuf->table[offset >> PAGE_SHIFT].addr; addr &= PAGE_MASK; return addr + offset % PAGE_SIZE; @@ -108,10 +110,31 @@ static inline dma_addr_t snd_sgbuf_get_addr(struct snd_sg_buf *sgbuf, size_t off /* * return the virtual address at the corresponding offset */ -static inline void *snd_sgbuf_get_ptr(struct snd_sg_buf *sgbuf, size_t offset) +static inline void *snd_sgbuf_get_ptr(struct snd_dma_buffer *dmab, + size_t offset) { + struct snd_sg_buf *sgbuf = dmab->private_data; return sgbuf->table[offset >> PAGE_SHIFT].buf + offset % PAGE_SIZE; } + +unsigned int snd_sgbuf_get_chunk_size(struct snd_dma_buffer *dmab, + unsigned int ofs, unsigned int size); +#else +/* non-SG versions */ +static inline dma_addr_t snd_sgbuf_get_addr(struct snd_dma_buffer *dmab, + size_t offset) +{ + return dmab->addr + offset; +} + +static inline void *snd_sgbuf_get_ptr(struct snd_dma_buffer *dmab, + size_t offset) +{ + return dmab->area + offset; +} + +#define snd_sgbuf_get_chunk_size(dmab, ofs, size) (size) + #endif /* CONFIG_SND_DMA_SGBUF */ /* allocate/release a buffer */ diff --git a/include/sound/pcm.h b/include/sound/pcm.h index 669c85a..7e4e4e3 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) |