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Add gpio_request() to asm-generic header

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

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2012-06-13 06:19:37 +00:00 committed by Anatolij Gustschin
parent 3ab270d5df
commit 1bbd28d215
1 changed files with 9 additions and 0 deletions
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9
include/asm-generic/gpio.h
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@ -94,4 +94,13 @@ int gpio_get_value(unsigned gpio);
*/ */
int gpio_set_value(unsigned gpio, int value); 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_ */ #endif /* _ASM_GENERIC_GPIO_H_ */