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Add gpio_is_valid() for bcm47xx
Index: linux-2.6.25.10/arch/mips/bcm47xx/gpio.c
===================================================================
--- linux-2.6.25.10.orig/arch/mips/bcm47xx/gpio.c 2008-07-20 20:48:44.000000000 +0200
+++ linux-2.6.25.10/arch/mips/bcm47xx/gpio.c 2008-07-20 20:57:55.000000000 +0200
@@ -77,3 +77,15 @@ int bcm47xx_gpio_direction_output(unsign
}
EXPORT_SYMBOL_GPL(bcm47xx_gpio_direction_output);
+int bcm47xx_gpio_is_valid(int gpio)
+{
+ if (ssb_bcm47xx.chipco.dev) {
+ if (gpio >= 0 && gpio < BCM47XX_CHIPCO_GPIO_LINES)
+ return 1;
+ } else if (ssb_bcm47xx.extif.dev) {
+ if (gpio >= 0 && gpio < BCM47XX_EXTIF_GPIO_LINES)
+ return 1;
+ }
+ return 0;
+}
+EXPORT_SYMBOL_GPL(bcm47xx_gpio_is_valid);
Index: linux-2.6.25.10/include/asm-mips/mach-bcm47xx/gpio.h
===================================================================
--- linux-2.6.25.10.orig/include/asm-mips/mach-bcm47xx/gpio.h 2008-07-20 20:48:44.000000000 +0200
+++ linux-2.6.25.10/include/asm-mips/mach-bcm47xx/gpio.h 2008-07-20 20:49:20.000000000 +0200
@@ -17,6 +17,7 @@ extern int bcm47xx_gpio_get_value(unsign
extern void bcm47xx_gpio_set_value(unsigned gpio, int value);
extern int bcm47xx_gpio_direction_input(unsigned gpio);
extern int bcm47xx_gpio_direction_output(unsigned gpio, int value);
+extern int bcm47xx_gpio_is_valid(int gpio);
static inline int gpio_request(unsigned gpio, const char *label)
{
@@ -52,6 +53,10 @@ static inline int gpio_direction_output(
return bcm47xx_gpio_direction_output(gpio, value);
}
+static inline int gpio_is_valid(int gpio)
+{
+ return bcm47xx_gpio_is_valid(gpio);
+}
/* cansleep wrappers */
#include <asm-generic/gpio.h>
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