diff options
Diffstat (limited to 'sound/soc/tegra/tegra_pcm.h')
| -rw-r--r-- | sound/soc/tegra/tegra_pcm.h | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/sound/soc/tegra/tegra_pcm.h b/sound/soc/tegra/tegra_pcm.h index dbb90339fe0d..7fe22788004b 100644 --- a/sound/soc/tegra/tegra_pcm.h +++ b/sound/soc/tegra/tegra_pcm.h @@ -33,6 +33,8 @@ #include <mach/dma.h> +#define MAX_DMA_REQ_COUNT 2 + struct tegra_pcm_dma_params { unsigned long addr; unsigned long wrap; @@ -48,8 +50,24 @@ struct tegra_runtime_data { int dma_pos_end; int period_index; int dma_req_idx; - struct tegra_dma_req dma_req[2]; + struct tegra_dma_req dma_req[MAX_DMA_REQ_COUNT]; struct tegra_dma_channel *dma_chan; + int dma_req_count; }; +int tegra_pcm_trigger(struct snd_pcm_substream *substream, int cmd); +int tegra_pcm_allocate(struct snd_pcm_substream *substream, + int dma_mode, + const struct snd_pcm_hardware *pcm_hardware); +int tegra_pcm_close(struct snd_pcm_substream *substream); +int tegra_pcm_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params); +int tegra_pcm_trigger(struct snd_pcm_substream *substream, int cmd); +int tegra_pcm_mmap(struct snd_pcm_substream *substream, + struct vm_area_struct *vma); +int tegra_pcm_dma_allocate(struct snd_soc_pcm_runtime *rtd, size_t size); +void tegra_pcm_free(struct snd_pcm *pcm); +snd_pcm_uframes_t tegra_pcm_pointer(struct snd_pcm_substream *substream); +int tegra_pcm_hw_free(struct snd_pcm_substream *substream); + #endif |