| /* |
| * linux/sound/arm/bf5xx-ac97.h |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| |
| #ifndef _BF5XX_AC97_H |
| #define _BF5XX_AC97_H |
| |
| extern struct snd_ac97_bus_ops bf5xx_ac97_ops; |
| extern struct snd_ac97 *ac97; |
| /* Frame format in memory, only support stereo currently */ |
| struct ac97_frame { |
| u16 ac97_tag; /* slot 0 */ |
| u16 ac97_addr; /* slot 1 */ |
| u16 ac97_data; /* slot 2 */ |
| u32 ac97_pcm; /* slot 3 and 4: left and right pcm data */ |
| } __attribute__ ((packed)); |
| |
| #define TAG_VALID 0x8000 |
| #define TAG_CMD 0x6000 |
| #define TAG_PCM_LEFT 0x1000 |
| #define TAG_PCM_RIGHT 0x0800 |
| #define TAG_PCM (TAG_PCM_LEFT | TAG_PCM_RIGHT) |
| |
| extern struct snd_soc_dai bfin_ac97_dai; |
| |
| void bf5xx_pcm_to_ac97(struct ac97_frame *dst, const __u32 *src, \ |
| size_t count); |
| |
| void bf5xx_ac97_to_pcm(const struct ac97_frame *src, __u32 *dst, \ |
| size_t count); |
| |
| #endif |
