39 lines
1.0 KiB
Diff
39 lines
1.0 KiB
Diff
Add gpio_is_valid() for bcm47xx
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--- a/arch/mips/bcm47xx/gpio.c
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+++ b/arch/mips/bcm47xx/gpio.c
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@@ -77,3 +77,15 @@
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}
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EXPORT_SYMBOL_GPL(bcm47xx_gpio_direction_output);
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+int bcm47xx_gpio_is_valid(int gpio)
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+{
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+ if (ssb_bcm47xx.chipco.dev) {
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+ if (gpio >= 0 && gpio < BCM47XX_CHIPCO_GPIO_LINES)
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+ return 1;
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+ } else if (ssb_bcm47xx.extif.dev) {
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+ if (gpio >= 0 && gpio < BCM47XX_EXTIF_GPIO_LINES)
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+ return 1;
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+ }
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+ return 0;
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+}
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+EXPORT_SYMBOL_GPL(bcm47xx_gpio_is_valid);
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--- a/include/asm-mips/mach-bcm47xx/gpio.h
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+++ b/include/asm-mips/mach-bcm47xx/gpio.h
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@@ -17,6 +17,7 @@
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extern void bcm47xx_gpio_set_value(unsigned gpio, int value);
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extern int bcm47xx_gpio_direction_input(unsigned gpio);
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extern int bcm47xx_gpio_direction_output(unsigned gpio, int value);
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+extern int bcm47xx_gpio_is_valid(int gpio);
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static inline int gpio_request(unsigned gpio, const char *label)
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{
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@@ -52,6 +53,8 @@
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return bcm47xx_gpio_direction_output(gpio, value);
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}
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+#define gpio_is_valid bcm47xx_gpio_is_valid
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+
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/* cansleep wrappers */
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#include <asm-generic/gpio.h>
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