2 * OF helpers for the GPIO API
4 * Copyright (c) 2007-2008 MontaVista Software, Inc.
6 * Author: Anton Vorontsov <avorontsov@ru.mvista.com>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
14 #ifndef __LINUX_OF_GPIO_H
15 #define __LINUX_OF_GPIO_H
17 #include <linux/errno.h>
18 #include <linux/gpio.h>
23 * Generic OF GPIO chip
28 int (*xlate
)(struct of_gpio_chip
*of_gc
, struct device_node
*np
,
29 const void *gpio_spec
);
32 static inline struct of_gpio_chip
*to_of_gpio_chip(struct gpio_chip
*gc
)
34 return container_of(gc
, struct of_gpio_chip
, gc
);
38 * OF GPIO chip for memory mapped banks
40 struct of_mm_gpio_chip
{
41 struct of_gpio_chip of_gc
;
42 void (*save_regs
)(struct of_mm_gpio_chip
*mm_gc
);
46 static inline struct of_mm_gpio_chip
*to_of_mm_gpio_chip(struct gpio_chip
*gc
)
48 struct of_gpio_chip
*of_gc
= to_of_gpio_chip(gc
);
50 return container_of(of_gc
, struct of_mm_gpio_chip
, of_gc
);
53 extern int of_get_gpio(struct device_node
*np
, int index
);
54 extern int of_mm_gpiochip_add(struct device_node
*np
,
55 struct of_mm_gpio_chip
*mm_gc
);
56 extern int of_gpio_simple_xlate(struct of_gpio_chip
*of_gc
,
57 struct device_node
*np
,
58 const void *gpio_spec
);
61 /* Drivers may not strictly depend on the GPIO support, so let them link. */
62 static inline int of_get_gpio(struct device_node
*np
, int index
)
67 #endif /* CONFIG_OF_GPIO */
69 #endif /* __LINUX_OF_GPIO_H */
This page took 0.031223 seconds and 5 git commands to generate.