[ALSA] ASoC: S3C2412 IIS driver

S3C2412 SoC IIS support for ALSA/ASoC

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

1 files changed, 38 insertions, 0 deletions

diff --git a/sound/soc/s3c24xx/s3c2412-i2s.h b/sound/soc/s3c24xx/s3c2412-i2s.h
new file mode 100644
index 000000000000..27f48e1ffa86
--- /dev/null
+++ b/sound/soc/s3c24xx/s3c2412-i2s.h
@@ -0,0 +1,38 @@
+/* sound/soc/s3c24xx/s3c2412-i2s.c
+ *
+ * ALSA Soc Audio Layer - S3C2412 I2S driver
+ *
+ * Copyright (c) 2007 Simtec Electronics
+ *      http://armlinux.simtec.co.uk/
+ *      Ben Dooks <ben@simtec.co.uk>
+ *
+ *  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.
+*/
+
+#ifndef __SND_SOC_S3C24XX_S3C2412_I2S_H
+#define __SND_SOC_S3C24XX_S3C2412_I2S_H __FILE__
+
+#define S3C2412_DIV_BCLK        (1)
+#define S3C2412_DIV_RCLK        (2)
+#define S3C2412_DIV_PRESCALER   (3)
+
+#define S3C2412_CLKSRC_PCLK     (0)
+#define S3C2412_CLKSRC_I2SCLK   (1)
+
+extern struct clk *s3c2412_get_iisclk(void);
+
+extern struct snd_soc_cpu_dai s3c2412_i2s_dai;
+
+struct s3c2412_rate_calc {
+        unsigned int    clk_div;        /* for prescaler */
+        unsigned int    fs_div;         /* for root frame clock */
+};
+
+extern int s3c2412_iis_calc_rate(struct s3c2412_rate_calc *info,
+                                 unsigned int *fstab,
+                                 unsigned int rate, struct clk *clk);
+
+#endif /* __SND_SOC_S3C24XX_S3C2412_I2S_H */