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/*
* OF helpers for the GPIO API
*
* based on Linux OF_GPIO API
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __OF_GPIO_H
#define __OF_GPIO_H
/*
* This is Linux-specific flags. By default controllers' and Linux' mapping
* match, but GPIO controllers are free to translate their own flags to
* Linux-specific in their .xlate callback. Though, 1:1 mapping is recommended.
*/
enum of_gpio_flags {
OF_GPIO_ACTIVE_LOW = 0x1,
};
#ifdef CONFIG_OFTREE
extern int of_get_named_gpio_flags(struct device_node *np,
const char *list_name, int index, enum of_gpio_flags *flags);
#else /* CONFIG_OFTREE */
static inline int of_get_named_gpio_flags(struct device_node *np,
const char *list_name, int index, enum of_gpio_flags *flags)
{
return -ENOSYS;
}
#endif /* CONFIG_OFTREE */
static inline int of_get_named_gpio(struct device_node *np,
const char *list_name, int index)
{
return of_get_named_gpio_flags(np, list_name, index, NULL);
}
#endif
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