Merge branch 'for-next/gpio'

1 files changed, 43 insertions, 0 deletions

diff --git a/include/gpio.h b/include/gpio.h
index 140d53c83e..4a97521aee 100644
--- a/include/gpio.h
+++ b/include/gpio.h
@@ -3,6 +3,28 @@
 
 #include <asm/gpio.h>
 
+#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;
+};
+
 #ifndef CONFIG_GPIOLIB
 static inline int gpio_request(unsigned gpio, const char *label)
 {
@@ -12,9 +34,29 @@ static inline int gpio_request(unsigned gpio, const char *label)
 static inline void gpio_free(unsigned gpio)
 {
 }
+
+static inline int gpio_request_one(unsigned gpio,
+					unsigned long flags, const char *label)
+{
+	return -ENOSYS;
+}
+
+static inline int gpio_request_array(const struct gpio *array, size_t num)
+{
+	return -ENOSYS;
+}
+
+static inline void gpio_free_array(const struct gpio *array, size_t num)
+{
+	/* GPIO can never have been requested */
+	WARN_ON(1);
+}
 #else
 int gpio_request(unsigned gpio, const char *label);
 void gpio_free(unsigned gpio);
+int gpio_request_one(unsigned gpio, unsigned long flags, const char *label);
+int gpio_request_array(const struct gpio *array, size_t num);
+void gpio_free_array(const struct gpio *array, size_t num);
 #endif
 
 struct gpio_chip;
@@ -24,6 +66,7 @@ struct gpio_ops {
 	void (*free)(struct gpio_chip *chip, unsigned offset);
 	int (*direction_input)(struct gpio_chip *chip, unsigned offset);
 	int (*direction_output)(struct gpio_chip *chip, unsigned offset, int value);
+	int (*get_direction)(struct gpio_chip *chip, unsigned offset);
 	int (*get)(struct gpio_chip *chip, unsigned offset);
 	void (*set)(struct gpio_chip *chip, unsigned offset, int value);
 };