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/*
* sound/soc/blackfin/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 */
u16 ac97_pcm_l; /*slot 3:front left*/
u16 ac97_pcm_r; /*slot 4:front left*/
#if defined(CONFIG_SND_BF5XX_MULTICHAN_SUPPORT)
u16 ac97_mdm_l1;
u16 ac97_center; /*slot 6:center*/
u16 ac97_sl; /*slot 7:surround left*/
u16 ac97_sr; /*slot 8:surround right*/
u16 ac97_lfe; /*slot 9:lfe*/
#endif
} __attribute__ ((packed));
/* Speaker location */
#define SP_FL 0x0001
#define SP_FR 0x0010
#define SP_FC 0x0002
#define SP_LFE 0x0020
#define SP_SL 0x0004
#define SP_SR 0x0040
#define SP_STEREO (SP_FL | SP_FR)
#define SP_2DOT1 (SP_FL | SP_FR | SP_LFE)
#define SP_QUAD (SP_FL | SP_FR | SP_SL | SP_SR)
#define SP_5DOT1 (SP_FL | SP_FR | SP_FC | SP_LFE | SP_SL | SP_SR)
#define TAG_VALID 0x8000
#define TAG_CMD 0x6000
#define TAG_PCM_LEFT 0x1000
#define TAG_PCM_RIGHT 0x0800
#define TAG_PCM_MDM_L1 0x0400
#define TAG_PCM_CENTER 0x0200
#define TAG_PCM_SL 0x0100
#define TAG_PCM_SR 0x0080
#define TAG_PCM_LFE 0x0040
void bf5xx_pcm_to_ac97(struct ac97_frame *dst, const __u16 *src, \
size_t count, unsigned int chan_mask);
void bf5xx_ac97_to_pcm(const struct ac97_frame *src, __u16 *dst, \
size_t count);
#endif
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