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
  13 typedef struct {
  14         char *name;                     /* stream identifier */
  15         u32 dcmd;                       /* DMA descriptor dcmd field */
  16         volatile u32 *drcmr;            /* the DMA request channel to use */
  17         u32 dev_addr;                   /* device physical address for DMA */
  18 } pxa2xx_pcm_dma_params_t;
  19
  20 typedef struct {
  21         pxa2xx_pcm_dma_params_t *playback_params;
  22         pxa2xx_pcm_dma_params_t *capture_params;
  23         int (*startup)(snd_pcm_substream_t *);
  24         void (*shutdown)(snd_pcm_substream_t *);
  25         int (*prepare)(snd_pcm_substream_t *);
  26 } pxa2xx_pcm_client_t;
  27
  28 extern int pxa2xx_pcm_new(snd_card_t *, pxa2xx_pcm_client_t *, snd_pcm_t **);
  29