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 13struct pxa2xx_pcm_dma_params { 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}; 19 20struct pxa2xx_pcm_client { 21 struct pxa2xx_pcm_dma_params *playback_params; 22 struct pxa2xx_pcm_dma_params *capture_params; 23 int (*startup)(struct snd_pcm_substream *); 24 void (*shutdown)(struct snd_pcm_substream *); 25 int (*prepare)(struct snd_pcm_substream *); 26}; 27 28extern int pxa2xx_pcm_new(struct snd_card *, struct pxa2xx_pcm_client *, struct snd_pcm **); 29