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bf5xx-ac97.h

/*
 * linux/sound/arm/bf5xx-ac97.h
 *
 * 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.
 */

#ifndef _BF5XX_AC97_H
#define _BF5XX_AC97_H

extern struct snd_ac97_bus_ops bf5xx_ac97_ops;
extern struct snd_ac97 *ac97;
/* Frame format in memory, only support stereo currently */
struct ac97_frame {
      u16 ac97_tag;           /* slot 0 */
      u16 ac97_addr;          /* slot 1 */
      u16 ac97_data;          /* slot 2 */
      u32 ac97_pcm;           /* slot 3 and 4: left and right pcm data */
} __attribute__ ((packed));

#define TAG_VALID       0x8000
#define TAG_CMD               0x6000
#define TAG_PCM_LEFT          0x1000
#define TAG_PCM_RIGHT         0x0800
#define TAG_PCM               (TAG_PCM_LEFT | TAG_PCM_RIGHT)

extern struct snd_soc_dai bfin_ac97_dai;

void bf5xx_pcm_to_ac97(struct ac97_frame *dst, const __u32 *src, \
            size_t count);

void bf5xx_ac97_to_pcm(const struct ac97_frame *src, __u32 *dst, \
            size_t count);

#endif

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