37 lines
989 B
C
37 lines
989 B
C
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/*
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* linux/sound/arm/bf5xx-ac97.h
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef _BF5XX_AC97_H
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#define _BF5XX_AC97_H
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extern struct snd_ac97_bus_ops bf5xx_ac97_ops;
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extern struct snd_ac97 *ac97;
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/* Frame format in memory, only support stereo currently */
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struct ac97_frame {
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u16 ac97_tag; /* slot 0 */
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u16 ac97_addr; /* slot 1 */
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u16 ac97_data; /* slot 2 */
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u32 ac97_pcm; /* slot 3 and 4: left and right pcm data */
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} __attribute__ ((packed));
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#define TAG_VALID 0x8000
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#define TAG_CMD 0x6000
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#define TAG_PCM_LEFT 0x1000
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#define TAG_PCM_RIGHT 0x0800
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#define TAG_PCM (TAG_PCM_LEFT | TAG_PCM_RIGHT)
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extern struct snd_soc_dai bfin_ac97_dai;
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void bf5xx_pcm_to_ac97(struct ac97_frame *dst, const __u32 *src, \
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size_t count);
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void bf5xx_ac97_to_pcm(const struct ac97_frame *src, __u32 *dst, \
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size_t count);
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#endif
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