[deliverable/linux.git] / sound / arm / pxa2xx-pcm.h

/*
 * 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 **);
Commit	Line	Data
2c484df0 TI	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
d18f8376	13	struct pxa2xx_pcm_dma_params {
2c484df0 TI	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 */
d18f8376	18	};
2c484df0	19
d18f8376 TI	20	struct 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	};
2c484df0	27
d18f8376	28	extern int pxa2xx_pcm_new(struct snd_card , struct pxa2xx_pcm_client , struct snd_pcm **);
2c484df0	29