ASoC: Add MAX9850 codec driver

This patch adds ASoC support for the MAX9850 codec with headphone
amplifier.

Supported features:
- Playback
- 16, 20 and 24 bit audio
- 8k - 48k sample rates
- DAPM

Signed-off-by: Christian Glindkamp <christian.glindkamp@taskit.de>
Acked-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/codecs/max9850.h b/sound/soc/codecs/max9850.h
new file mode 100644
index 0000000..72b1ddb
--- /dev/null
+++ b/sound/soc/codecs/max9850.h
@@ -0,0 +1,38 @@
+/*
+ * max9850.h  --  codec driver for max9850
+ *
+ * Copyright (C) 2011 taskit GmbH
+ * Author: Christian Glindkamp <christian.glindkamp@taskit.de>
+ *
+ * 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 _MAX9850_H
+#define _MAX9850_H
+
+#define MAX9850_STATUSA			0x00
+#define MAX9850_STATUSB			0x01
+#define MAX9850_VOLUME			0x02
+#define MAX9850_GENERAL_PURPOSE		0x03
+#define MAX9850_INTERRUPT		0x04
+#define MAX9850_ENABLE			0x05
+#define MAX9850_CLOCK			0x06
+#define MAX9850_CHARGE_PUMP		0x07
+#define MAX9850_LRCLK_MSB		0x08
+#define MAX9850_LRCLK_LSB		0x09
+#define MAX9850_DIGITAL_AUDIO		0x0a
+
+#define MAX9850_CACHEREGNUM 11
+
+/* MAX9850_DIGITAL_AUDIO */
+#define MAX9850_MASTER			(1<<7)
+#define MAX9850_INV			(1<<6)
+#define MAX9850_BCINV			(1<<5)
+#define MAX9850_DLY			(1<<3)
+#define MAX9850_RTJ			(1<<2)
+
+#endif