release/src-rt-6.x.4708/linux/linux-2.6.36/sound/arm/pxa2xx-pcm.h

   1 /*
   2  * linux/sound/arm/pxa2xx-pcm.h -- ALSA PCM interface for the Intel PXA2xx chip
   3  *
   4  * Author:      Nicolas Pitre
   5  * Created:     Nov 30, 2004
   6  * Copyright:   MontaVista Software, Inc.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  */
  12 #include <mach/dma.h>
  13
  14 struct pxa2xx_runtime_data {
  15         int dma_ch;
  16         struct pxa2xx_pcm_dma_params *params;
  17         pxa_dma_desc *dma_desc_array;
  18         dma_addr_t dma_desc_array_phys;
  19 };
  20
  21 struct pxa2xx_pcm_client {
  22         struct pxa2xx_pcm_dma_params *playback_params;
  23         struct pxa2xx_pcm_dma_params *capture_params;
  24         int (*startup)(struct snd_pcm_substream *);
  25         void (*shutdown)(struct snd_pcm_substream *);
  26         int (*prepare)(struct snd_pcm_substream *);
  27 };
  28
  29 extern int pxa2xx_pcm_new(struct snd_card *, struct pxa2xx_pcm_client *, struct snd_pcm **);