2 * sound/soc/blackfin/bf5xx-ac97.h
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.
12 extern struct snd_ac97 *ac97;
13 /* Frame format in memory, only support stereo currently */
15 u16 ac97_tag; /* slot 0 */
16 u16 ac97_addr; /* slot 1 */
17 u16 ac97_data; /* slot 2 */
18 u16 ac97_pcm_l; /*slot 3:front left*/
19 u16 ac97_pcm_r; /*slot 4:front left*/
20 #if defined(CONFIG_SND_BF5XX_MULTICHAN_SUPPORT)
22 u16 ac97_center; /*slot 6:center*/
23 u16 ac97_sl; /*slot 7:surround left*/
24 u16 ac97_sr; /*slot 8:surround right*/
25 u16 ac97_lfe; /*slot 9:lfe*/
27 } __attribute__ ((packed));
29 /* Speaker location */
37 #define SP_STEREO (SP_FL | SP_FR)
38 #define SP_2DOT1 (SP_FL | SP_FR | SP_LFE)
39 #define SP_QUAD (SP_FL | SP_FR | SP_SL | SP_SR)
40 #define SP_5DOT1 (SP_FL | SP_FR | SP_FC | SP_LFE | SP_SL | SP_SR)
42 #define TAG_VALID 0x8000
43 #define TAG_CMD 0x6000
44 #define TAG_PCM_LEFT 0x1000
45 #define TAG_PCM_RIGHT 0x0800
46 #define TAG_PCM_MDM_L1 0x0400
47 #define TAG_PCM_CENTER 0x0200
48 #define TAG_PCM_SL 0x0100
49 #define TAG_PCM_SR 0x0080
50 #define TAG_PCM_LFE 0x0040
52 void bf5xx_pcm_to_ac97(struct ac97_frame *dst, const __u16 *src, \
53 size_t count, unsigned int chan_mask);
55 void bf5xx_ac97_to_pcm(const struct ac97_frame *src, __u16 *dst, \