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authorCliff Cai <cliff.cai@analog.com>2008-09-05 18:21:37 +0800
committerJaroslav Kysela <perex@perex.cz>2008-09-09 09:11:19 +0200
commitf2028623f2b14bdd3daeb0873a16cab0dc4050c4 (patch)
treeef213925f15c7ceabd71533f7d166d782d4ff886 /sound/soc/blackfin/bf5xx-ac97.h
parentaff0510c00523bfd9fab20923a493ce8a6f27cda (diff)
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.h36
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 00000000000..3f77cc558dc
--- /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