ASoC: MAX9877: add MAX9877 amp driver

The MAX9877 combines a high-efficiency Class D audio power amplifier
with a stereo Class AB capacitor-less DirectDrive headphone amplifier.

The max9877_add_controls() is called to register the MAX9877 specific
controls on machine specific init() of the machine driver.

The datasheet for the MAX9877 can find at the following url:
http://datasheets.maxim-ic.com/en/ds/MAX9877.pdf

[Slight edit to sort the ALL_CODECS entries -- broonie.]

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 37 insertions, 0 deletions

diff --git a/sound/soc/codecs/max9877.h b/sound/soc/codecs/max9877.h
new file mode 100644
index 000000000000..6da72290ac58
--- /dev/null
+++ b/sound/soc/codecs/max9877.h
@@ -0,0 +1,37 @@
+/*
+ * max9877.h  --  amp driver for max9877
+ *
+ * Copyright (C) 2009 Samsung Electronics Co.Ltd
+ * Author: Joonyoung Shim <jy0922.shim@samsung.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.
+ *
+ */
+
+#ifndef _MAX9877_H
+#define _MAX9877_H
+
+#define MAX9877_INPUT_MODE              0x00
+#define MAX9877_SPK_VOLUME              0x01
+#define MAX9877_HPL_VOLUME              0x02
+#define MAX9877_HPR_VOLUME              0x03
+#define MAX9877_OUTPUT_MODE             0x04
+
+/* MAX9877_INPUT_MODE */
+#define MAX9877_INB                     (1 << 4)
+#define MAX9877_INA                     (1 << 5)
+#define MAX9877_ZCD                     (1 << 6)
+
+/* MAX9877_OUTPUT_MODE */
+#define MAX9877_OUTMODE_MASK            (15 << 0)
+#define MAX9877_OSC_MASK                (3 << 4)
+#define MAX9877_OSC_OFFSET              4
+#define MAX9877_BYPASS                  (1 << 6)
+#define MAX9877_SHDN                    (1 << 7)
+
+extern int max9877_add_controls(struct snd_soc_codec *codec);
+
+#endif