diff options
| author | Cliff Cai <cliff.cai@analog.com> | 2008-09-05 12:21:37 +0200 |
|---|---|---|
| committer | Jaroslav Kysela <perex@perex.cz> | 2008-09-09 09:11:19 +0200 |
| commit | f2028623f2b14bdd3daeb0873a16cab0dc4050c4 (patch) | |
| tree | ef213925f15c7ceabd71533f7d166d782d4ff886 /sound/soc/blackfin/bf5xx-ac97.h | |
| parent | sound: ASoC: Blackfin: DMA Driver for AC97 sound chip (diff) | |
| download | linux-f2028623f2b14bdd3daeb0873a16cab0dc4050c4.tar.xz linux-f2028623f2b14bdd3daeb0873a16cab0dc4050c4.zip | |
sound: ASoC: Blackfin: AC97 Blackfin CPU DAI driver
Signed-off-by: Cliff Cai <cliff.cai@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Diffstat (limited to 'sound/soc/blackfin/bf5xx-ac97.h')
| -rw-r--r-- | sound/soc/blackfin/bf5xx-ac97.h | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/sound/soc/blackfin/bf5xx-ac97.h b/sound/soc/blackfin/bf5xx-ac97.h new file mode 100644 index 000000000000..3f77cc558dc0 --- /dev/null +++ b/sound/soc/blackfin/bf5xx-ac97.h @@ -0,0 +1,36 @@ +/* + * 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 |