diff --git a/include/sound/tlv320aic32x4.h b/include/sound/tlv320aic32x4.h
index 24e5d99..22305c0 100644
--- a/include/sound/tlv320aic32x4.h
+++ b/include/sound/tlv320aic32x4.h
@@ -22,7 +22,30 @@
 #define AIC32X4_MICPGA_ROUTE_LMIC_IN2R_10K	0x00000001
 #define AIC32X4_MICPGA_ROUTE_RMIC_IN1L_10K	0x00000002
 
+/* GPIO API */
+#define AIC32X4_MFPX_DEFAULT_VALUE	0xff
+
+#define AIC32X4_MFP1_DIN_DISABLED	0
+#define AIC32X4_MFP1_DIN_ENABLED	0x2
+#define AIC32X4_MFP1_GPIO_IN		0x4
+
+#define AIC32X4_MFP2_GPIO_OUT_LOW	0x0
+#define AIC32X4_MFP2_GPIO_OUT_HIGH	0x1
+
+#define AIC32X4_MFP_GPIO_ENABLED	0x4
+
+#define AIC32X4_MFP5_GPIO_DISABLED	0x0
+#define AIC32X4_MFP5_GPIO_INPUT		0x8
+#define AIC32X4_MFP5_GPIO_OUTPUT	0xc
+#define AIC32X4_MFP5_GPIO_OUT_LOW	0x0
+#define AIC32X4_MFP5_GPIO_OUT_HIGH	0x1
+
+struct aic32x4_setup_data {
+	unsigned int gpio_func[5];
+};
+
 struct aic32x4_pdata {
+	struct aic32x4_setup_data *setup;
 	u32 power_cfg;
 	u32 micpga_routing;
 	bool swapdacs;