1 files changed, 158 insertions, 0 deletions

diff --git a/arch/arm/mach-w90x900/mfp.c b/arch/arm/mach-w90x900/mfp.c
new file mode 100644
index 00000000000..a47dc9a708e
--- /dev/null
+++ b/arch/arm/mach-w90x900/mfp.c
@@ -0,0 +1,158 @@
+/*
+ * linux/arch/arm/mach-w90x900/mfp.c
+ *
+ * Copyright (c) 2008 Nuvoton technology corporation
+ *
+ * Wan ZongShun <mcuos.com@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation;version 2 of the License.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/list.h>
+#include <linux/errno.h>
+#include <linux/err.h>
+#include <linux/string.h>
+#include <linux/clk.h>
+#include <linux/mutex.h>
+#include <linux/io.h>
+
+#include <mach/hardware.h>
+
+#define REG_MFSEL       (W90X900_VA_GCR + 0xC)
+
+#define GPSELF          (0x01 << 1)
+
+#define GPSELC          (0x03 << 2)
+#define ENKPI           (0x02 << 2)
+#define ENNAND          (0x01 << 2)
+
+#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 DEFINE_MUTEX(mfp_mutex);
+
+void mfp_set_groupf(struct device *dev)
+{
+        unsigned long mfpen;
+        const char *dev_id;
+
+        BUG_ON(!dev);
+
+        mutex_lock(&mfp_mutex);
+
+        dev_id = dev_name(dev);
+
+        mfpen = __raw_readl(REG_MFSEL);
+
+        if (strcmp(dev_id, "nuc900-emc") == 0)
+                mfpen |= GPSELF;/*enable mac*/
+        else
+                mfpen &= ~GPSELF;/*GPIOF[9:0]*/
+
+        __raw_writel(mfpen, REG_MFSEL);
+
+        mutex_unlock(&mfp_mutex);
+}
+EXPORT_SYMBOL(mfp_set_groupf);
+
+void mfp_set_groupc(struct device *dev)
+{
+        unsigned long mfpen;
+        const char *dev_id;
+
+        BUG_ON(!dev);
+
+        mutex_lock(&mfp_mutex);
+
+        dev_id = dev_name(dev);
+
+        mfpen = __raw_readl(REG_MFSEL);
+
+        if (strcmp(dev_id, "nuc900-lcd") == 0)
+                mfpen |= GPSELC;/*enable lcd*/
+        else if (strcmp(dev_id, "nuc900-kpi") == 0) {
+                mfpen &= (~GPSELC);/*enable kpi*/
+                mfpen |= ENKPI;
+        } else if (strcmp(dev_id, "nuc900-nand") == 0) {
+                mfpen &= (~GPSELC);/*enable nand*/
+                mfpen |= ENNAND;
+        } else
+                mfpen &= (~GPSELC);/*GPIOC[14:0]*/
+
+        __raw_writel(mfpen, REG_MFSEL);
+
+        mutex_unlock(&mfp_mutex);
+}
+EXPORT_SYMBOL(mfp_set_groupc);
+
+void mfp_set_groupi(struct device *dev)
+{
+        unsigned long mfpen;
+        const char *dev_id;
+
+        BUG_ON(!dev);
+
+        mutex_lock(&mfp_mutex);
+
+        dev_id = dev_name(dev);
+
+        mfpen = __raw_readl(REG_MFSEL);
+
+        mfpen &= ~GPSELEI1;/*default gpio16*/
+
+        if (strcmp(dev_id, "nuc900-wdog") == 0)
+                mfpen |= GPSELEI1;/*enable wdog*/
+        else if (strcmp(dev_id, "nuc900-atapi") == 0)
+                mfpen |= GPSELEI0;/*enable atapi*/
+        else if (strcmp(dev_id, "nuc900-keypad") == 0)
+                mfpen &= ~GPSELEI0;/*enable keypad*/
+
+        __raw_writel(mfpen, REG_MFSEL);
+
+        mutex_unlock(&mfp_mutex);
+}
+EXPORT_SYMBOL(mfp_set_groupi);
+
+void mfp_set_groupg(struct device *dev)
+{
+        unsigned long mfpen;
+        const char *dev_id;
+
+        BUG_ON(!dev);
+
+        mutex_lock(&mfp_mutex);
+
+        dev_id = dev_name(dev);
+
+        mfpen = __raw_readl(REG_MFSEL);
+
+        if (strcmp(dev_id, "nuc900-spi") == 0) {
+                mfpen &= ~(GPIOG0TO1 | GPIOG2TO3);
+                mfpen |= ENSPI;/*enable spi*/
+        } else if (strcmp(dev_id, "nuc900-i2c0") == 0) {
+                mfpen &= ~(GPIOG0TO1);
+                mfpen |= ENI2C0;/*enable i2c0*/
+        } else if (strcmp(dev_id, "nuc900-i2c1") == 0) {
+                mfpen &= ~(GPIOG2TO3);
+                mfpen |= ENI2C1;/*enable i2c1*/
+        } else {
+                mfpen &= ~(GPIOG0TO1 | GPIOG2TO3);/*GPIOG[3:0]*/
+        }
+
+        __raw_writel(mfpen, REG_MFSEL);
+
+        mutex_unlock(&mfp_mutex);
+}
+EXPORT_SYMBOL(mfp_set_groupg);
+