| /* |
| * linux/sound/arm/pxa2xx-pcm.h -- ALSA PCM interface for the Intel PXA2xx chip |
| * |
| * Author: Nicolas Pitre |
| * Created: Nov 30, 2004 |
| * Copyright: MontaVista Software, Inc. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| |
| 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 */ |
| }; |
| |
| struct pxa2xx_pcm_client { |
| struct pxa2xx_pcm_dma_params *playback_params; |
| struct pxa2xx_pcm_dma_params *capture_params; |
| int (*startup)(struct snd_pcm_substream *); |
| void (*shutdown)(struct snd_pcm_substream *); |
| int (*prepare)(struct snd_pcm_substream *); |
| }; |
| |
| extern int pxa2xx_pcm_new(struct snd_card *, struct pxa2xx_pcm_client *, struct snd_pcm **); |
| |
