sound: ASoC: Add WM8971 CODEC driver

The WM8971 is a low power, high quality stereo codec designed for
portable digital audio applications.

This driver was originally written by Kenneth Kiraly.  While out of tree
it has had updates to reflect current kernel APIs and coding standards
from Graeme Gregory and Mark Brown.

Signed-off-by: Kenneth Kiraly <kiraly@lab126.com>
Signed-off-by: Liam Girdwood <lg@opensource.wolfsonmicro.com>
Signed-off-by: Graeme Gregory <gg@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

1 files changed, 64 insertions, 0 deletions

diff --git a/sound/soc/codecs/wm8971.h b/sound/soc/codecs/wm8971.h
new file mode 100644
index 000000000000..ef4f08f9f344
--- /dev/null
+++ b/sound/soc/codecs/wm8971.h
@@ -0,0 +1,64 @@
+/*
+ * wm8971.h  --  audio driver for WM8971
+ *
+ * Copyright 2005 Lab126, Inc.
+ *
+ * Author: Kenneth Kiraly <kiraly@lab126.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 _WM8971_H
+#define _WM8971_H
+
+#define WM8971_LINVOL   0x00
+#define WM8971_RINVOL   0x01
+#define WM8971_LOUT1V   0x02
+#define WM8971_ROUT1V   0x03
+#define WM8971_ADCDAC   0x05
+#define WM8971_IFACE    0x07
+#define WM8971_SRATE    0x08
+#define WM8971_LDAC             0x0a
+#define WM8971_RDAC             0x0b
+#define WM8971_BASS             0x0c
+#define WM8971_TREBLE   0x0d
+#define WM8971_RESET    0x0f
+#define WM8971_ALC1             0x11
+#define WM8971_ALC2             0x12
+#define WM8971_ALC3             0x13
+#define WM8971_NGATE    0x14
+#define WM8971_LADC             0x15
+#define WM8971_RADC             0x16
+#define WM8971_ADCTL1   0x17
+#define WM8971_ADCTL2   0x18
+#define WM8971_PWR1             0x19
+#define WM8971_PWR2             0x1a
+#define WM8971_ADCTL3   0x1b
+#define WM8971_ADCIN    0x1f
+#define WM8971_LADCIN   0x20
+#define WM8971_RADCIN   0x21
+#define WM8971_LOUTM1   0x22
+#define WM8971_LOUTM2   0x23
+#define WM8971_ROUTM1   0x24
+#define WM8971_ROUTM2   0x25
+#define WM8971_MOUTM1   0x26
+#define WM8971_MOUTM2   0x27
+#define WM8971_LOUT2V   0x28
+#define WM8971_ROUT2V   0x29
+#define WM8971_MOUTV    0x2A
+
+#define WM8971_SYSCLK   0
+
+struct wm8971_setup_data {
+        int i2c_bus;
+        unsigned short i2c_address;
+};
+
+extern struct snd_soc_dai wm8971_dai;
+extern struct snd_soc_codec_device soc_codec_dev_wm8971;
+
+#endif