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Cliff Caif2028622008-09-05 18:21:37 +08001/*
Barry Song7d156a22009-09-16 20:25:10 -04002 * sound/soc/blackfin/bf5xx-ac97.h
Cliff Caif2028622008-09-05 18:21:37 +08003 *
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
Cliff Caif2028622008-09-05 18:21:37 +080012/* Frame format in memory, only support stereo currently */
13struct ac97_frame {
14 u16 ac97_tag; /* slot 0 */
15 u16 ac97_addr; /* slot 1 */
16 u16 ac97_data; /* slot 2 */
Cliff Cai67f854b2008-11-18 16:18:17 +080017 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
Cliff Caif2028622008-09-05 18:21:37 +080026} __attribute__ ((packed));
27
Cliff Cai67f854b2008-11-18 16:18:17 +080028/* 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
Cliff Caif2028622008-09-05 18:21:37 +080041#define TAG_VALID 0x8000
42#define TAG_CMD 0x6000
43#define TAG_PCM_LEFT 0x1000
44#define TAG_PCM_RIGHT 0x0800
Cliff Cai67f854b2008-11-18 16:18:17 +080045#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
Cliff Caif2028622008-09-05 18:21:37 +080050
Cliff Cai67f854b2008-11-18 16:18:17 +080051void bf5xx_pcm_to_ac97(struct ac97_frame *dst, const __u16 *src, \
52 size_t count, unsigned int chan_mask);
Cliff Caif2028622008-09-05 18:21:37 +080053
Cliff Cai67f854b2008-11-18 16:18:17 +080054void bf5xx_ac97_to_pcm(const struct ac97_frame *src, __u16 *dst, \
Cliff Caif2028622008-09-05 18:21:37 +080055 size_t count);
56
57#endif