ASoC: add RT5640 CODEC driver

/*

 * linux/sound/rt5640.h -- Platform data for RT5640

 *

 * Copyright 2011 Realtek Microelectronics

 *

 * 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 __LINUX_SND_RT5640_H

#define __LINUX_SND_RT5640_H

struct rt5640_platform_data {

	/* IN1 & IN2 can optionally be differential */

	bool in1_diff;

	bool in2_diff;

	int ldo1_en; /* GPIO for LDO1_EN */

};

#endif

	select SND_SOC_OMAP_HDMI_CODEC if OMAP4_DSS_HDMI

	select SND_SOC_PCM3008

	select SND_SOC_RT5631 if I2C

	select SND_SOC_RT5640 if I2C

	select SND_SOC_SGTL5000 if I2C

	select SND_SOC_SI476X if MFD_SI476X_CORE

	select SND_SOC_SN95031 if INTEL_SCU_IPC

config SND_SOC_RT5631

	tristate

config SND_SOC_RT5640

	tristate

#Freescale sgtl5000 codec

config SND_SOC_SGTL5000

	tristate

snd-soc-omap-hdmi-codec-objs := omap-hdmi.o

snd-soc-pcm3008-objs := pcm3008.o

snd-soc-rt5631-objs := rt5631.o

snd-soc-rt5640-objs := rt5640.o

snd-soc-sgtl5000-objs := sgtl5000.o

snd-soc-alc5623-objs := alc5623.o

snd-soc-alc5632-objs := alc5632.o

obj-$(CONFIG_SND_SOC_OMAP_HDMI_CODEC) += snd-soc-omap-hdmi-codec.o

obj-$(CONFIG_SND_SOC_PCM3008)	+= snd-soc-pcm3008.o

obj-$(CONFIG_SND_SOC_RT5631)	+= snd-soc-rt5631.o

obj-$(CONFIG_SND_SOC_RT5640)	+= snd-soc-rt5640.o

obj-$(CONFIG_SND_SOC_SGTL5000)  += snd-soc-sgtl5000.o

obj-$(CONFIG_SND_SOC_SIGMADSP)	+= snd-soc-sigmadsp.o

obj-$(CONFIG_SND_SOC_SI476X)	+= snd-soc-si476x.o