Merge branch 'master' into for-davem

[karo-tx-linux.git] / include / asm-generic / gpio.h

diff --git a/include/asm-generic/gpio.h b/include/asm-generic/gpio.h
index 485eeb6c4ef3da76a15777943c62f890ea79b99f..979c6a57f2f1b48690d46171b21edb5c954f083b 100644 (file)
--- a/include/asm-generic/gpio.h
+++ b/include/asm-generic/gpio.h
@@ -136,6 +136,32 @@ extern int __gpio_cansleep(unsigned gpio);
 
 extern int __gpio_to_irq(unsigned gpio);
 
+#define GPIOF_DIR_OUT  (0 << 0)
+#define GPIOF_DIR_IN   (1 << 0)
+
+#define GPIOF_INIT_LOW (0 << 1)
+#define GPIOF_INIT_HIGH        (1 << 1)
+
+#define GPIOF_IN               (GPIOF_DIR_IN)
+#define GPIOF_OUT_INIT_LOW     (GPIOF_DIR_OUT | GPIOF_INIT_LOW)
+#define GPIOF_OUT_INIT_HIGH    (GPIOF_DIR_OUT | GPIOF_INIT_HIGH)
+
+/**
+ * struct gpio - a structure describing a GPIO with configuration
+ * @gpio:      the GPIO number
+ * @flags:     GPIO configuration as specified by GPIOF_*
+ * @label:     a literal description string of this GPIO
+ */
+struct gpio {
+       unsigned        gpio;
+       unsigned long   flags;
+       const char      *label;
+};
+
+extern int gpio_request_one(unsigned gpio, unsigned long flags, const char *label);
+extern int gpio_request_array(struct gpio *array, size_t num);
+extern void gpio_free_array(struct gpio *array, size_t num);
+
 #ifdef CONFIG_GPIO_SYSFS
 
 /*