mirror of https://github.com/hak5/openwrt.git
52 lines
1.3 KiB
Diff
52 lines
1.3 KiB
Diff
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--- a/arch/mips/bcm47xx/gpio.c
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+++ b/arch/mips/bcm47xx/gpio.c
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@@ -7,6 +7,7 @@
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*/
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#include <linux/export.h>
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+#include <linux/gpio.h>
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#include <linux/ssb/ssb.h>
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#include <linux/ssb/ssb_driver_chipcommon.h>
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#include <linux/ssb/ssb_driver_extif.h>
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@@ -100,3 +101,30 @@ int gpio_to_irq(unsigned gpio)
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return -EINVAL;
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}
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EXPORT_SYMBOL_GPL(gpio_to_irq);
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+
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+/**
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+ * gpio_request_one - request a single GPIO with initial configuration
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+ * @gpio: the GPIO number
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+ * @flags: GPIO configuration as specified by GPIOF_*
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+ * @label: a literal description string of this GPIO
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+ */
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+int gpio_request_one(unsigned gpio, unsigned long flags, const char *label)
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+{
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+ int err;
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+
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+ err = gpio_request(gpio, label);
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+ if (err)
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+ return err;
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+
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+ if (flags & GPIOF_DIR_IN)
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+ err = gpio_direction_input(gpio);
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+ else
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+ err = gpio_direction_output(gpio,
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+ (flags & GPIOF_INIT_HIGH) ? 1 : 0);
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+
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+ if (err)
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+ gpio_free(gpio);
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+
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+ return err;
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+}
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+EXPORT_SYMBOL_GPL(gpio_request_one);
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--- a/arch/mips/include/asm/mach-bcm47xx/gpio.h
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+++ b/arch/mips/include/asm/mach-bcm47xx/gpio.h
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@@ -19,6 +19,7 @@
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extern int gpio_request(unsigned gpio, const char *label);
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extern void gpio_free(unsigned gpio);
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extern int gpio_to_irq(unsigned gpio);
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+extern int gpio_request_one(unsigned gpio, unsigned long flags, const char *label);
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static inline int gpio_get_value(unsigned gpio)
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{
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