ALSA: ASoC: Add AK4535 driver

The AK4535 codec is included in some HP iPAQ systems.

This driver was originally written by Richard Purdie and with some bug
fixes from Milan Plzik.  While out of tree it has also had some
mechanical updates for new APIs and current best practices from Liam
Girdwood, Graeme Gregory and Mark Brown.

Signed-off-by: Richard Purdie <richard@openedhand.com>
Signed-off-by: Milan Plzik <milan.plzik@gmail.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: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

1 files changed, 46 insertions, 0 deletions

diff --git a/sound/soc/codecs/ak4535.h b/sound/soc/codecs/ak4535.h
new file mode 100644
index 000000000000..fc686ddf753a
--- /dev/null
+++ b/sound/soc/codecs/ak4535.h
@@ -0,0 +1,46 @@
+/*
+ * ak4535.h  --  AK4535 Soc Audio driver
+ *
+ * Copyright 2005 Openedhand Ltd.
+ *
+ * Author: Richard Purdie <richard@openedhand.com>
+ *
+ * Based on wm8753.h
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef _AK4535_H
+#define _AK4535_H
+
+/* AK4535 register space */
+
+#define AK4535_PM1              0x0
+#define AK4535_PM2              0x1
+#define AK4535_SIG1             0x2
+#define AK4535_SIG2             0x3
+#define AK4535_MODE1            0x4
+#define AK4535_MODE2            0x5
+#define AK4535_DAC              0x6
+#define AK4535_MIC              0x7
+#define AK4535_TIMER            0x8
+#define AK4535_ALC1             0x9
+#define AK4535_ALC2             0xa
+#define AK4535_PGA              0xb
+#define AK4535_LATT             0xc
+#define AK4535_RATT             0xd
+#define AK4535_VOL              0xe
+#define AK4535_STATUS           0xf
+
+#define AK4535_CACHEREGNUM      0x10
+
+struct ak4535_setup_data {
+        unsigned short i2c_address;
+};
+
+extern struct snd_soc_codec_dai ak4535_dai;
+extern struct snd_soc_codec_device soc_codec_dev_ak4535;
+
+#endif