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Diffstat (limited to 'include/asm-generic/gpio.h')
-rw-r--r--include/asm-generic/gpio.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/include/asm-generic/gpio.h b/include/asm-generic/gpio.h
index 9fd3093d855a..20ca7663975f 100644
--- a/include/asm-generic/gpio.h
+++ b/include/asm-generic/gpio.h
@@ -57,6 +57,8 @@ struct device_node;
* enabling module power and clock; may sleep
* @free: optional hook for chip-specific deactivation, such as
* disabling module power and clock; may sleep
+ * @get_direction: returns direction for signal "offset", 0=out, 1=in,
+ * (same as GPIOF_DIR_XXX), or negative error
* @direction_input: configures signal "offset" as input, or returns error
* @get: returns value for signal "offset"; for output signals this
* returns either the value actually sensed, or zero
@@ -101,7 +103,8 @@ struct gpio_chip {
unsigned offset);
void (*free)(struct gpio_chip *chip,
unsigned offset);
-
+ int (*get_direction)(struct gpio_chip *chip,
+ unsigned offset);
int (*direction_input)(struct gpio_chip *chip,
unsigned offset);
int (*get)(struct gpio_chip *chip,