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Add gpio_is_valid() for bcm47xx
--- a/arch/mips/bcm47xx/gpio.c
+++ b/arch/mips/bcm47xx/gpio.c
@@ -77,3 +77,15 @@
}
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);
--- a/include/asm-mips/mach-bcm47xx/gpio.h
+++ b/include/asm-mips/mach-bcm47xx/gpio.h
@@ -17,6 +17,7 @@
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 +53,8 @@
return bcm47xx_gpio_direction_output(gpio, value);
}
+#define gpio_is_valid bcm47xx_gpio_is_valid
+
/* cansleep wrappers */
#include <asm-generic/gpio.h>
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