[ALSA] ASoC Samsung S3C24xx I2S support

This patch by Ben Dooks from Simtec Electronics adds ASoC I2S support
for the Samsung S3C24xx CPU.

Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: Graeme Gregory <gg@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lg@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>

1 files changed, 35 insertions, 0 deletions

diff --git a/sound/soc/s3c24xx/s3c24xx-i2s.h b/sound/soc/s3c24xx/s3c24xx-i2s.h
new file mode 100644
index 000000000000..f9ca04edacb7
--- /dev/null
+++ b/sound/soc/s3c24xx/s3c24xx-i2s.h
@@ -0,0 +1,35 @@
+/*
+ * s3c24xx-i2s.c  --  ALSA Soc Audio Layer
+ *
+ * Copyright 2005 Wolfson Microelectronics PLC.
+ * Author: Graeme Gregory
+ *         graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com
+ *
+ *  This program is free software; you can redistribute  it and/or modify it
+ *  under  the terms of  the GNU General  Public License as published by the
+ *  Free Software Foundation;  either version 2 of the  License, or (at your
+ *  option) any later version.
+ *
+ *  Revision history
+ *    10th Nov 2006   Initial version.
+ */
+
+#ifndef S3C24XXI2S_H_
+#define S3C24XXI2S_H_
+
+/* clock sources */
+#define S3C24XX_CLKSRC_PCLK 0
+#define S3C24XX_CLKSRC_MPLL 1
+
+/* Clock dividers */
+#define S3C24XX_DIV_MCLK        0
+#define S3C24XX_DIV_BCLK        1
+#define S3C24XX_DIV_PRESCALER   2
+
+/* prescaler */
+#define S3C24XX_PRESCALE(a,b) \
+        (((a - 1) << S3C2410_IISPSR_INTSHIFT) | ((b - 1) << S3C2410_IISPSR_EXTSHFIT))
+
+u32 s3c24xx_i2s_get_clockrate(void);
+
+#endif /*S3C24XXI2S_H_*/