update wm8994 driver

arch/arm/configs/rk29_phonepadsdk_defconfig

@@ -1510,6 +1510,20 @@ CONFIG_SND_RK29_SOC_I2S_8CH=y
 # CONFIG_SND_RK29_SOC_alc5631 is not set
 # CONFIG_SND_RK29_SOC_RT5625 is not set
 CONFIG_SND_RK29_SOC_WM8994=y
+# CONFIG_SND_INSIDE_EARPIECE is not set
+# CONFIG_SND_OUTSIDE_EARPIECE is not set
+CONFIG_SND_NO_EARPIECE=y
+CONFIG_SND_BB_NORMAL_INPUT=y
+# CONFIG_SND_BB_DIFFERENTIAL_INPUT is not set
+CONFIG_WM8994_SPEAKER_INCALL_VOL=15
+CONFIG_WM8994_SPEAKER_INCALL_MIC_VOL=15
+CONFIG_WM8994_SPEAKER_NORMAL_VOL=15
+CONFIG_WM8994_HEADSET_INCALL_VOL=6
+CONFIG_WM8994_HEADSET_INCALL_MIC_VOL=30
+CONFIG_WM8994_HEADSET_NORMAL_VOL=15
+CONFIG_WM8994_BT_INCALL_VOL=30
+CONFIG_WM8994_BT_INCALL_MIC_VOL=-20
+CONFIG_WM8994_RECORDER_VOL=40
 # CONFIG_SND_RK29_SOC_CS42L52 is not set
 # CONFIG_SND_RK29_CODEC_SOC_MASTER is not set
 CONFIG_SND_RK29_CODEC_SOC_SLAVE=y

arch/arm/mach-rk29/board-rk29phonepadsdk.c

@@ -764,6 +764,13 @@ static struct i2c_board_info __initdata board_i2c0_devices[] = {
 		.flags			= 0,
 	},
 #endif
+#if defined (CONFIG_SND_SOC_WM8994)
+        {
+                .type                   = "wm8994",
+                .addr           = 0x1A,
+                .flags                  = 0,
+        },
+#endif
 #if defined (CONFIG_BATTERY_STC3100)
 	{
 		.type    		= "stc3100",

sound/soc/codecs/wm8994.h

@@ -14,6 +14,8 @@
 #ifndef _WM8994_H
 #define _WM8994_H
 
+#define WM8994_NUM_REG   0x44
+
 /* WM8994 register space */
 #define WM8994_RESET     0x00
 #define wm8994_SYSCLK_3072M 0

sound/soc/rk29/Kconfig

@@ -75,6 +75,94 @@ config SND_RK29_SOC_WM8994
 	  Say Y if you want to add support for SoC audio on rockchip
 	  with the WM8994.  
 
+if SND_SOC_WM8994
+choice
+  prompt "Chose earpiece type"
+
+	config SND_INSIDE_EARPIECE
+		tristate  "Inside earpiece"
+
+	config SND_OUTSIDE_EARPIECE
+		tristate  "Outside earpiece"
+
+	config SND_NO_EARPIECE
+		tristate  "No earpiece"
+endchoice
+
+choice
+  prompt "Chose BB input signal type"
+
+	config SND_BB_NORMAL_INPUT
+		tristate  "BB normal singnal input"
+
+	config SND_BB_DIFFERENTIAL_INPUT
+		tristate  "BB differential singnal input"
+
+endchoice
+
+config WM8994_SPEAKER_INCALL_VOL  
+	default 15
+	int "Setting the wm8994 speaker incall vol"
+	help
+	  -21dB to 12dB
+
+config WM8994_SPEAKER_INCALL_MIC_VOL  
+	default 15
+	int "Setting the wm8994 speaker incall mic vol"
+	help
+	  -22dB to 30dB
+
+config WM8994_SPEAKER_NORMAL_VOL  
+	default 15
+	int "Setting the wm8994 speaker normal vol"
+	help
+	  -57dB to 18dB
+
+if SND_INSIDE_EARPIECE||SND_OUTSIDE_EARPIECE
+config WM8994_EARPIECE_INCALL_VOL  
+	default 0
+	int "Setting the wm8994 earpiece incall vol(normal)"
+	help
+	  -27dB to 30dB
+endif
+
+config WM8994_HEADSET_INCALL_VOL
+	default 6
+	int "Setting the wm8994 headset incall vol"
+	help
+	  -12dB to 6dB
+
+config WM8994_HEADSET_INCALL_MIC_VOL  
+	default 30
+	int "Setting the wm8994 headset incall mic vol"
+	help
+	  -22dB to 30dB
+
+config WM8994_HEADSET_NORMAL_VOL  
+	default 15
+	int "Setting the wm8994 headset normal vol"
+	help
+	  -57dB to 6dB
+
+config WM8994_BT_INCALL_VOL  
+	default 30
+	int "Setting the wm8994 BT incall vol"
+	help
+	  0dB or 30dB
+
+config WM8994_BT_INCALL_MIC_VOL  
+	default -20
+	int "Setting the wm8994 BT incall mic vol"
+	help
+	  -57dB to 6dB
+
+config WM8994_RECORDER_VOL  
+	default 40
+	int "Setting the wm8994 recorder vol"
+	help
+	  -16dB to 60dB
+endif
+
 config SND_RK29_SOC_CS42L52
 	tristate "SoC I2S Audio support for rockchip - CS42L52"
 	depends on SND_RK29_SOC && I2C_RK29