Fix the comment

[openwrt.git] / target / linux / rdc-2.6 / files / arch / i386 / mach-rdc / gpio.c

diff --git a/target/linux/rdc-2.6/files/arch/i386/mach-rdc/gpio.c b/target/linux/rdc-2.6/files/arch/i386/mach-rdc/gpio.c
index eadb152..2c38867 100644 (file)
--- a/target/linux/rdc-2.6/files/arch/i386/mach-rdc/gpio.c
+++ b/target/linux/rdc-2.6/files/arch/i386/mach-rdc/gpio.c
@@ -15,21 +15,25 @@
 #include <linux/module.h>
 #include <linux/delay.h>
 
-#define RDC3210_CFGREG_ADDR     0x0CF8
-#define RDC3210_CFGREG_DATA     0x0CFC
+#include <asm/mach-rdc/rdc321x_defs.h>
+
+static inline int rdc_gpio_is_valid(unsigned gpio)
+{
+       return ((gpio > RDC_MAX_GPIO) ? 0 : 1);
+}
 
 static unsigned int rdc_gpio_read(unsigned gpio)
 {
        unsigned int val;
 
-       val = 0x80000000 | (7 << 11) | ((0x48));
+       val = 0x80000000 | (7 << 11) | ((gpio&0x20?0x84:0x48));
         outl(val, RDC3210_CFGREG_ADDR);
         udelay(10);
         val = inl(RDC3210_CFGREG_DATA);
-        val |= (0x1 << gpio);
+        val |= (0x1 << (gpio & 0x1F));
         outl(val, RDC3210_CFGREG_DATA);
         udelay(10);
-        val = 0x80000000 | (7 << 11) | ((0x4C));
+        val = 0x80000000 | (7 << 11) | ((gpio&0x20?0x88:0x4C));
         outl(val, RDC3210_CFGREG_ADDR);
         udelay(10);
         val = inl(RDC3210_CFGREG_DATA);
@@ -37,7 +41,7 @@ static unsigned int rdc_gpio_read(unsigned gpio)
        return val;
 }
 
-void rdc_gpio_write(unsigned int val)
+static void rdc_gpio_write(unsigned int val)
 {
        if (val) {
                outl(val, RDC3210_CFGREG_DATA);
@@ -47,7 +51,8 @@ void rdc_gpio_write(unsigned int val)
 
 int rdc_gpio_get_value(unsigned gpio)
 {
-       return ((int)rdc_gpio_read(gpio));
+       if (rdc_gpio_is_valid(gpio))
+               return (int)rdc_gpio_read(gpio);
 }
 EXPORT_SYMBOL(rdc_gpio_get_value);
 
@@ -55,12 +60,15 @@ void rdc_gpio_set_value(unsigned gpio, int value)
 {
        unsigned int val;
 
+       if (!rdc_gpio_is_valid(gpio))
+               return;
+       
        val = rdc_gpio_read(gpio);
 
        if (value)
-               val &= ~(0x1 << gpio);
+               val &= ~(0x1 << (gpio & 0x1F));
        else
-               val |= (0x1 << gpio);
+               val |= (0x1 << (gpio & 0x1F));
 
        rdc_gpio_write(val);
 }