ASoC: Add WM8728 codec driver

The WM8728 is a high performance stereo DAC designed for applications
such as DVD, home theatre and digital TV.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/codecs/Kconfig

@@ -13,6 +13,7 @@ config SND_SOC_ALL_CODECS
 	select SND_SOC_UDA1380 if I2C
 	select SND_SOC_WM8510 if (I2C || SPI_MASTER)
 	select SND_SOC_WM8580 if I2C
+	select SND_SOC_WM8728 if (I2C || SPI_MASTER)
 	select SND_SOC_WM8731 if (I2C || SPI_MASTER)
 	select SND_SOC_WM8750 if (I2C || SPI_MASTER)
 	select SND_SOC_WM8753 if (I2C || SPI_MASTER)
@@ -93,6 +94,9 @@ config SND_SOC_WM8510
 config SND_SOC_WM8580
 	tristate
 
+config SND_SOC_WM8728
+	tristate
+
 config SND_SOC_WM8731
 	tristate
 

sound/soc/codecs/Makefile

@@ -11,6 +11,7 @@ snd-soc-twl4030-objs := twl4030.o
 snd-soc-uda1380-objs := uda1380.o
 snd-soc-wm8510-objs := wm8510.o
 snd-soc-wm8580-objs := wm8580.o
+snd-soc-wm8728-objs := wm8728.o
 snd-soc-wm8731-objs := wm8731.o
 snd-soc-wm8750-objs := wm8750.o
 snd-soc-wm8753-objs := wm8753.o
@@ -34,6 +35,7 @@ obj-$(CONFIG_SND_SOC_TWL4030)	+= snd-soc-twl4030.o
 obj-$(CONFIG_SND_SOC_UDA1380)	+= snd-soc-uda1380.o
 obj-$(CONFIG_SND_SOC_WM8510)	+= snd-soc-wm8510.o
 obj-$(CONFIG_SND_SOC_WM8580)	+= snd-soc-wm8580.o
+obj-$(CONFIG_SND_SOC_WM8728)	+= snd-soc-wm8728.o
 obj-$(CONFIG_SND_SOC_WM8731)	+= snd-soc-wm8731.o
 obj-$(CONFIG_SND_SOC_WM8750)	+= snd-soc-wm8750.o
 obj-$(CONFIG_SND_SOC_WM8753)	+= snd-soc-wm8753.o

sound/soc/codecs/wm8728.h

+/*
+ * wm8728.h  --  WM8728 ASoC codec driver
+ *
+ * Copyright 2008 Wolfson Microelectronics plc
+ *
+ * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
+ *
+ * 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 _WM8728_H
+#define _WM8728_H
+
+#define WM8728_DACLVOL   0x00
+#define WM8728_DACRVOL   0x01
+#define WM8728_DACCTL    0x02
+#define WM8728_IFCTL     0x03
+
+struct wm8728_setup_data {
+	int            spi;
+	int            i2c_bus;
+	unsigned short i2c_address;
+};
+
+extern struct snd_soc_dai wm8728_dai;
+extern struct snd_soc_codec_device soc_codec_dev_wm8728;
+
+#endif