[ARM] 5619/1: Add spi mfp api for w90p910 spi driver

Add spi mfp api for w90p910 spi driver.

Signed-off-by: Wan ZongShun <mcuos.com@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 38 insertions, 0 deletions

diff --git a/arch/arm/mach-w90x900/mfp-w90p910.c b/arch/arm/mach-w90x900/mfp-w90p910.c
index 8aec34b044ca..e11a32b6856d 100644
--- a/arch/arm/mach-w90x900/mfp-w90p910.c
+++ b/arch/arm/mach-w90x900/mfp-w90p910.c
@@ -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);
+