| Cliff Cai | f202862 | 2008-09-05 18:21:37 +0800 | [diff] [blame^] | 1 | /* |
| 2 | * linux/sound/arm/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 | u32 ac97_pcm; /* slot 3 and 4: left and right pcm data */ |
| 20 | } __attribute__ ((packed)); |
| 21 | |
| 22 | #define TAG_VALID 0x8000 |
| 23 | #define TAG_CMD 0x6000 |
| 24 | #define TAG_PCM_LEFT 0x1000 |
| 25 | #define TAG_PCM_RIGHT 0x0800 |
| 26 | #define TAG_PCM (TAG_PCM_LEFT | TAG_PCM_RIGHT) |
| 27 | |
| 28 | extern struct snd_soc_dai bfin_ac97_dai; |
| 29 | |
| 30 | void bf5xx_pcm_to_ac97(struct ac97_frame *dst, const __u32 *src, \ |
| 31 | size_t count); |
| 32 | |
| 33 | void bf5xx_ac97_to_pcm(const struct ac97_frame *src, __u32 *dst, \ |
| 34 | size_t count); |
| 35 | |
| 36 | #endif |