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 /* Frame format in memory, only support stereo currently */ 13 struct ac97_frame { 14 u16 ac97_tag; /* slot 0 */ 15 u16 ac97_addr; /* slot 1 */ 16 u16 ac97_data; /* slot 2 */ 17 u16 ac97_pcm_l; /*slot 3:front left*/ 18 u16 ac97_pcm_r; /*slot 4:front left*/ 19 #if defined(CONFIG_SND_BF5XX_MULTICHAN_SUPPORT) 20 u16 ac97_mdm_l1; 21 u16 ac97_center; /*slot 6:center*/ 22 u16 ac97_sl; /*slot 7:surround left*/ 23 u16 ac97_sr; /*slot 8:surround right*/ 24 u16 ac97_lfe; /*slot 9:lfe*/ 25 #endif 26 } __attribute__ ((packed)); 27 28 /* Speaker location */ 29 #define SP_FL 0x0001 30 #define SP_FR 0x0010 31 #define SP_FC 0x0002 32 #define SP_LFE 0x0020 33 #define SP_SL 0x0004 34 #define SP_SR 0x0040 35 36 #define SP_STEREO (SP_FL | SP_FR) 37 #define SP_2DOT1 (SP_FL | SP_FR | SP_LFE) 38 #define SP_QUAD (SP_FL | SP_FR | SP_SL | SP_SR) 39 #define SP_5DOT1 (SP_FL | SP_FR | SP_FC | SP_LFE | SP_SL | SP_SR) 40 41 #define TAG_VALID 0x8000 42 #define TAG_CMD 0x6000 43 #define TAG_PCM_LEFT 0x1000 44 #define TAG_PCM_RIGHT 0x0800 45 #define TAG_PCM_MDM_L1 0x0400 46 #define TAG_PCM_CENTER 0x0200 47 #define TAG_PCM_SL 0x0100 48 #define TAG_PCM_SR 0x0080 49 #define TAG_PCM_LFE 0x0040 50 51 void bf5xx_pcm_to_ac97(struct ac97_frame *dst, const __u16 *src, \ 52 size_t count, unsigned int chan_mask); 53 54 void bf5xx_ac97_to_pcm(const struct ac97_frame *src, __u16 *dst, \ 55 size_t count); 56 57 #endif 58