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authorwanzongshun <mcuos.com@gmail.com>2009-06-11 14:30:07 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2009-06-11 14:45:17 +0100
commit27eb97582db53b4b9461373aedf238ca06d85f15 (patch)
tree1d0d8b2a81c42d0f2849749308d804387735e8e7 /arch
parente1baa011a7160b491896b577d4f01b696be308fa (diff)
[ARM] 5551/1: Add multi-function pin api for w90p910 platform.
Add multi-function pin api for w90p910 platform. Signed-off-by: Wan ZongShun <mcuos.com@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/mach-w90x900/Makefile2
-rw-r--r--arch/arm/mach-w90x900/mfp-w90p910.c116
2 files changed, 117 insertions, 1 deletions
diff --git a/arch/arm/mach-w90x900/Makefile b/arch/arm/mach-w90x900/Makefile
index 0c0c1d63f1c..947316a0a52 100644
--- a/arch/arm/mach-w90x900/Makefile
+++ b/arch/arm/mach-w90x900/Makefile
@@ -4,7 +4,7 @@
# Object file lists.
-obj-y := irq.o time.o
+obj-y := irq.o time.o mfp-w90p910.o
# W90X900 CPU support files
diff --git a/arch/arm/mach-w90x900/mfp-w90p910.c b/arch/arm/mach-w90x900/mfp-w90p910.c
new file mode 100644
index 00000000000..a3520fefb5e
--- /dev/null
+++ b/arch/arm/mach-w90x900/mfp-w90p910.c
@@ -0,0 +1,116 @@
+/*
+ * linux/arch/arm/mach-w90x900/mfp-w90p910.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)
+
+static DECLARE_MUTEX(mfp_sem);
+
+void mfp_set_groupf(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-emc") == 0)
+ mfpen |= GPSELF;/*enable mac*/
+ else
+ mfpen &= ~GPSELF;/*GPIOF[9:0]*/
+
+ __raw_writel(mfpen, REG_MFSEL);
+
+ up(&mfp_sem);
+}
+EXPORT_SYMBOL(mfp_set_groupf);
+
+void mfp_set_groupc(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-lcd") == 0)
+ mfpen |= GPSELC;/*enable lcd*/
+ else if (strcmp(dev_id, "w90p910-kpi") == 0) {
+ mfpen &= (~GPSELC);/*enable kpi*/
+ mfpen |= ENKPI;
+ } else if (strcmp(dev_id, "w90p910-nand") == 0) {
+ mfpen &= (~GPSELC);/*enable nand*/
+ mfpen |= ENNAND;
+ } else
+ mfpen &= (~GPSELC);/*GPIOC[14:0]*/
+
+ __raw_writel(mfpen, REG_MFSEL);
+
+ up(&mfp_sem);
+}
+EXPORT_SYMBOL(mfp_set_groupc);
+
+void mfp_set_groupi(struct device *dev, int gpio)
+{
+ 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-wdog") == 0)
+ mfpen |= GPSELEI1;/*enable wdog*/
+ else if (strcmp(dev_id, "w90p910-atapi") == 0)
+ mfpen |= GPSELEI0;/*enable atapi*/
+
+ __raw_writel(mfpen, REG_MFSEL);
+
+ up(&mfp_sem);
+}
+EXPORT_SYMBOL(mfp_set_groupi);
+