Add spi multi-function pin api for w90p910

index 8aec34b..e68dbcf 100644
@@ -34,6 +34,12 @@
 #define GPSELEI0	(0x01 << 26)
 #define GPSELEI1	(0x01 << 27)
 
+#define GPIOG0TO1	(0x03 << 14)
+#define GPIOG2TO3	(0x03 << 16)
+#define ENSPI		(0x0a << 14)
+#define ENI2C0		(0x01 << 14)
+#define ENI2C1		(0x01 << 16)
+
 static DECLARE_MUTEX(mfp_sem);
 
 void mfp_set_groupf(struct device *dev)

@@ -118,3 +124,35 @@ void mfp_set_groupi(struct device *dev)
 }
 EXPORT_SYMBOL(mfp_set_groupi);
 
+void mfp_set_groupg(struct device *dev)
+{
+	unsigned long mfpen;
+	const char *dev_id;
+
+	BUG_ON(!dev);
+
+	down(&mfp_sem);
+
+	dev_id = dev_name(dev);
+
+	mfpen = __raw_readl(REG_MFSEL);
+
+	if (strcmp(dev_id, "w90p910-spi") == 0) {
+		mfpen &= ~(GPIOG0TO1 | GPIOG2TO3);
+		mfpen |= ENSPI;/*enable spi*/
+	} else if (strcmp(dev_id, "w90p910-i2c0") == 0) {
+		mfpen &= ~(GPIOG0TO1);
+		mfpen |= ENI2C0;/*enable i2c0*/
+	} else if (strcmp(dev_id, "w90p910-i2c1") == 0) {
+		mfpen &= ~(GPIOG2TO3);
+		mfpen &= ~ENI2C1;/*enable i2c1*/
+	} else {
+		mfpen &= ~(GPIOG0TO1 | GPIOG2TO3);/*GPIOG[3:0]*/
+	}
+
+	__raw_writel(mfpen, REG_MFSEL);
+
+	up(&mfp_sem);
+}
+EXPORT_SYMBOL(mfp_set_groupg);
+