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>

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);