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| author |   Dmitry Baryshkov <dbaryshkov@gmail.com> | 2008-09-10 05:01:20 +0400 |
|---|---|---|
| committer |   Jaroslav Kysela <perex@perex.cz> | 2008-09-23 08:18:10 +0200 |
| commit | a6d77317678148c973bb0131cc5a3a772f756d23 (patch) | |
| tree | 09cf4c825ce49eccef121d4ad133cfec20246248 /include/sound/pxa2xx-lib.h | |
| parent | ALSA: pxa2xx-ac97-lib: support building for several CPUs (diff) | |
| download | linux-dev-a6d77317678148c973bb0131cc5a3a772f756d23.tar.xz linux-dev-a6d77317678148c973bb0131cc5a3a772f756d23.zip | |
ALSA: Separate common pxa2xx-pcm code
ASoC and non-ASoC drivers for PCM DMA on PXA share lots of common code.
Move it to pxa2xx-lib.
[Fixed some checkpatch warnings -- broonie]
Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Diffstat (limited to 'include/sound/pxa2xx-lib.h')
| -rw-r--r-- | include/sound/pxa2xx-lib.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/include/sound/pxa2xx-lib.h b/include/sound/pxa2xx-lib.h index d18dd2d35978..2fd3d251d9a5 100644 --- a/include/sound/pxa2xx-lib.h +++ b/include/sound/pxa2xx-lib.h @@ -4,6 +4,31 @@ #include <linux/platform_device.h> #include <sound/ac97_codec.h> +/* PCM */ + +struct pxa2xx_pcm_dma_params { + char *name; /* stream identifier */ + u32 dcmd; /* DMA descriptor dcmd field */ + volatile u32 *drcmr; /* the DMA request channel to use */ + u32 dev_addr; /* device physical address for DMA */ +}; + +extern int __pxa2xx_pcm_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params); +extern int __pxa2xx_pcm_hw_free(struct snd_pcm_substream *substream); +extern int pxa2xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd); +extern snd_pcm_uframes_t pxa2xx_pcm_pointer(struct snd_pcm_substream *substream); +extern int __pxa2xx_pcm_prepare(struct snd_pcm_substream *substream); +extern void pxa2xx_pcm_dma_irq(int dma_ch, void *dev_id); +extern int __pxa2xx_pcm_open(struct snd_pcm_substream *substream); +extern int __pxa2xx_pcm_close(struct snd_pcm_substream *substream); +extern int pxa2xx_pcm_mmap(struct snd_pcm_substream *substream, + struct vm_area_struct *vma); +extern int pxa2xx_pcm_preallocate_dma_buffer(struct snd_pcm *pcm, int stream); +extern void pxa2xx_pcm_free_dma_buffers(struct snd_pcm *pcm); + +/* AC97 */ + extern unsigned short pxa2xx_ac97_read(struct snd_ac97 *ac97, unsigned short reg); extern void pxa2xx_ac97_write(struct snd_ac97 *ac97, unsigned short reg, unsigned short val); |