ASoC: Samsung: Add common I2S driver

The I2S controllers since S3C64XX are incremental revisions, with
a new feature added to the last one. The programming i/f doesn't
conflict between these revisions, so it is possible to have one
common driver that could manage various versions of I2S (v3, 4 & 5)

Signed-off-by: Jassi Brar <jassi.brar@samsung.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 29 insertions, 0 deletions

diff --git a/sound/soc/s3c24xx/i2s.h b/sound/soc/s3c24xx/i2s.h
new file mode 100644
index 000000000000..d3180b37dc10
--- /dev/null
+++ b/sound/soc/s3c24xx/i2s.h
@@ -0,0 +1,29 @@
+/* sound/soc/s3c24xx/i2s.h
+ *
+ * ALSA SoC Audio Layer - Samsung I2S Controller driver
+ *
+ * Copyright (c) 2010 Samsung Electronics Co. Ltd.
+ *      Jaswinder Singh <jassi.brar@samsung.com>
+ *
+ * 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 __SND_SOC_SAMSUNG_I2S_H
+#define __SND_SOC_SAMSUNG_I2S_H
+
+/*
+ * Maximum number of I2S blocks that any SoC can have.
+ * The secondary interface of a CPU dai(if there exists any),
+ * is indexed at [cpu-dai's ID + SAMSUNG_I2S_SECOFF]
+ */
+#define SAMSUNG_I2S_SECOFF      4
+
+#define SAMSUNG_I2S_DIV_BCLK    1
+
+#define SAMSUNG_I2S_RCLKSRC_0   0
+#define SAMSUNG_I2S_RCLKSRC_1   1
+#define SAMSUNG_I2S_CDCLK               2
+
+#endif /* __SND_SOC_SAMSUNG_I2S_H */