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/*
* 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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