62 строки
1.7 KiB
C
62 строки
1.7 KiB
C
/*
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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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u16 ac97_pcm_l; /*slot 3:front left*/
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u16 ac97_pcm_r; /*slot 4:front left*/
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#if defined(CONFIG_SND_BF5XX_MULTICHAN_SUPPORT)
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u16 ac97_mdm_l1;
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u16 ac97_center; /*slot 6:center*/
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u16 ac97_sl; /*slot 7:surround left*/
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u16 ac97_sr; /*slot 8:surround right*/
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u16 ac97_lfe; /*slot 9:lfe*/
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#endif
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} __attribute__ ((packed));
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/* Speaker location */
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#define SP_FL 0x0001
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#define SP_FR 0x0010
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#define SP_FC 0x0002
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#define SP_LFE 0x0020
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#define SP_SL 0x0004
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#define SP_SR 0x0040
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#define SP_STEREO (SP_FL | SP_FR)
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#define SP_2DOT1 (SP_FL | SP_FR | SP_LFE)
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#define SP_QUAD (SP_FL | SP_FR | SP_SL | SP_SR)
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#define SP_5DOT1 (SP_FL | SP_FR | SP_FC | SP_LFE | SP_SL | SP_SR)
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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_MDM_L1 0x0400
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#define TAG_PCM_CENTER 0x0200
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#define TAG_PCM_SL 0x0100
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#define TAG_PCM_SR 0x0080
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#define TAG_PCM_LFE 0x0040
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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 __u16 *src, \
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size_t count, unsigned int chan_mask);
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void bf5xx_ac97_to_pcm(const struct ac97_frame *src, __u16 *dst, \
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size_t count);
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#endif
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