aboutsummaryrefslogtreecommitdiffstats
path: root/include/asm-generic
diff options
context:
space:
mode:
Diffstat (limited to 'include/asm-generic')
-rw-r--r--include/asm-generic/gpio.h15
1 files changed, 15 insertions, 0 deletions
diff --git a/include/asm-generic/gpio.h b/include/asm-generic/gpio.h
index 4f3d75e1ad3..c7376bf80b0 100644
--- a/include/asm-generic/gpio.h
+++ b/include/asm-generic/gpio.h
@@ -31,6 +31,7 @@ static inline int gpio_is_valid(int number)
struct device;
struct seq_file;
struct module;
+struct device_node;
/**
* struct gpio_chip - abstract a GPIO controller
@@ -106,6 +107,17 @@ struct gpio_chip {
const char *const *names;
unsigned can_sleep:1;
unsigned exported:1;
+
+#if defined(CONFIG_OF_GPIO)
+ /*
+ * If CONFIG_OF is enabled, then all GPIO controllers described in the
+ * device tree automatically may have an OF translation
+ */
+ struct device_node *of_node;
+ int of_gpio_n_cells;
+ int (*of_xlate)(struct gpio_chip *gc, struct device_node *np,
+ const void *gpio_spec, u32 *flags);
+#endif
};
extern const char *gpiochip_is_requested(struct gpio_chip *chip,
@@ -115,6 +127,9 @@ extern int __must_check gpiochip_reserve(int start, int ngpio);
/* add/remove chips */
extern int gpiochip_add(struct gpio_chip *chip);
extern int __must_check gpiochip_remove(struct gpio_chip *chip);
+extern struct gpio_chip *gpiochip_find(void *data,
+ int (*match)(struct gpio_chip *chip,
+ void *data));
/* Always use the library code for GPIO management calls,