[U-Boot] [PATCH v2 01/19] Add gpio_request() to asm-generic header

Simon Glass
2012-06-13T16:19:37Z

This function should also be part of the GPIO API, so add it.

Signed-off-by: Simon Glass <sjg@chromium.org>
---

include/asm-generic/gpio.h | 9 +++++++++
1 files changed, 9 insertions(+), 0 deletions(-)

diff --git a/include/asm-generic/gpio.h b/include/asm-generic/gpio.h
index c19e16c..23c9649 100644
--- a/include/asm-generic/gpio.h
+++ b/include/asm-generic/gpio.h
@@ -94,4 +94,13 @@ int gpio_get_value(unsigned gpio);
*/
int gpio_set_value(unsigned gpio, int value);

+/**
+ * Request a gpio. This should be called before any of the other functions
+ * are used on this gpio.
+ *
+ * @param gp GPIO number
+ * @param label User label for this GPIO
+ * @return 0 if ok, -1 on error
+ */
+int gpio_request(unsigned gpio, const char *label);
#endif /* _ASM_GENERIC_GPIO_H_ */
--
1.7.7.3