1 /* 2 * sound/soc/blackfin/bf5xx-ac97.h 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License version 2 as 6 * published by the Free Software Foundation. 7 */ 8 9 #ifndef _BF5XX_AC97_H 10 #define _BF5XX_AC97_H 11 12 extern struct snd_ac97_bus_ops bf5xx_ac97_ops; 13 extern struct snd_ac97 *ac97; 14 /* Frame format in memory, only support stereo currently */ 15 struct ac97_frame { 16 u16 ac97_tag; /* slot 0 */ 17 u16 ac97_addr; /* slot 1 */ 18 u16 ac97_data; /* slot 2 */ 19 u16 ac97_pcm_l; /*slot 3:front left*/ 20 u16 ac97_pcm_r; /*slot 4:front left*/ 21 #if defined(CONFIG_SND_BF5XX_MULTICHAN_SUPPORT) 22 u16 ac97_mdm_l1; 23 u16 ac97_center; /*slot 6:center*/ 24 u16 ac97_sl; /*slot 7:surround left*/ 25 u16 ac97_sr; /*slot 8:surround right*/ 26 u16 ac97_lfe; /*slot 9:lfe*/ 27 #endif 28 } __attribute__ ((packed)); 29 30 /* Speaker location */ 31 #define SP_FL 0x0001 32 #define SP_FR 0x0010 33 #define SP_FC 0x0002 34 #define SP_LFE 0x0020 35 #define SP_SL 0x0004 36 #define SP_SR 0x0040 37 38 #define SP_STEREO (SP_FL | SP_FR) 39 #define SP_2DOT1 (SP_FL | SP_FR | SP_LFE) 40 #define SP_QUAD (SP_FL | SP_FR | SP_SL | SP_SR) 41 #define SP_5DOT1 (SP_FL | SP_FR | SP_FC | SP_LFE | SP_SL | SP_SR) 42 43 #define TAG_VALID 0x8000 44 #define TAG_CMD 0x6000 45 #define TAG_PCM_LEFT 0x1000 46 #define TAG_PCM_RIGHT 0x0800 47 #define TAG_PCM_MDM_L1 0x0400 48 #define TAG_PCM_CENTER 0x0200 49 #define TAG_PCM_SL 0x0100 50 #define TAG_PCM_SR 0x0080 51 #define TAG_PCM_LFE 0x0040 52 53 void bf5xx_pcm_to_ac97(struct ac97_frame *dst, const __u16 *src, \ 54 size_t count, unsigned int chan_mask); 55 56 void bf5xx_ac97_to_pcm(const struct ac97_frame *src, __u16 *dst, \ 57 size_t count); 58 59 #endif 60