diff options
Diffstat (limited to 'ANDROID_3.4.5/include/linux/of_gpio.h')
| -rw-r--r-- | ANDROID_3.4.5/include/linux/of_gpio.h | 158 |
1 files changed, 0 insertions, 158 deletions
diff --git a/ANDROID_3.4.5/include/linux/of_gpio.h b/ANDROID_3.4.5/include/linux/of_gpio.h deleted file mode 100644 index 81733d12..00000000 --- a/ANDROID_3.4.5/include/linux/of_gpio.h +++ /dev/null @@ -1,158 +0,0 @@ -/* - * OF helpers for the GPIO API - * - * Copyright (c) 2007-2008 MontaVista Software, Inc. - * - * Author: Anton Vorontsov <avorontsov@ru.mvista.com> - * - * 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 __LINUX_OF_GPIO_H -#define __LINUX_OF_GPIO_H - -#include <linux/compiler.h> -#include <linux/kernel.h> -#include <linux/errno.h> -#include <linux/gpio.h> -#include <linux/of.h> - -struct device_node; - -/* - * 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_OF_GPIO - -/* - * OF GPIO chip for memory mapped banks - */ -struct of_mm_gpio_chip { - struct gpio_chip gc; - void (*save_regs)(struct of_mm_gpio_chip *mm_gc); - void __iomem *regs; -}; - -static inline struct of_mm_gpio_chip *to_of_mm_gpio_chip(struct gpio_chip *gc) -{ - return container_of(gc, struct of_mm_gpio_chip, gc); -} - -extern int of_get_named_gpio_flags(struct device_node *np, - const char *list_name, int index, enum of_gpio_flags *flags); - -extern unsigned int of_gpio_named_count(struct device_node *np, - const char* propname); - -extern int of_mm_gpiochip_add(struct device_node *np, - struct of_mm_gpio_chip *mm_gc); - -extern void of_gpiochip_add(struct gpio_chip *gc); -extern void of_gpiochip_remove(struct gpio_chip *gc); -extern struct gpio_chip *of_node_to_gpiochip(struct device_node *np); -extern int of_gpio_simple_xlate(struct gpio_chip *gc, - const struct of_phandle_args *gpiospec, - u32 *flags); - -#else /* CONFIG_OF_GPIO */ - -/* Drivers may not strictly depend on the GPIO support, so let them link. */ -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; -} - -static inline unsigned int of_gpio_named_count(struct device_node *np, - const char* propname) -{ - return 0; -} - -static inline int of_gpio_simple_xlate(struct gpio_chip *gc, - const struct of_phandle_args *gpiospec, - u32 *flags) -{ - return -ENOSYS; -} - -static inline void of_gpiochip_add(struct gpio_chip *gc) { } -static inline void of_gpiochip_remove(struct gpio_chip *gc) { } - -#endif /* CONFIG_OF_GPIO */ - -/** - * of_gpio_count - Count GPIOs for a device - * @np: device node to count GPIOs for - * - * The function returns the count of GPIOs specified for a node. - * - * Note that the empty GPIO specifiers counts too. For example, - * - * gpios = <0 - * &pio1 1 2 - * 0 - * &pio2 3 4>; - * - * defines four GPIOs (so this function will return 4), two of which - * are not specified. - */ -static inline unsigned int of_gpio_count(struct device_node *np) -{ - return of_gpio_named_count(np, "gpios"); -} - -/** - * of_get_gpio_flags() - Get a GPIO number and flags to use with GPIO API - * @np: device node to get GPIO from - * @index: index of the GPIO - * @flags: a flags pointer to fill in - * - * Returns GPIO number to use with Linux generic GPIO API, or one of the errno - * value on the error condition. If @flags is not NULL the function also fills - * in flags for the GPIO. - */ -static inline int of_get_gpio_flags(struct device_node *np, int index, - enum of_gpio_flags *flags) -{ - return of_get_named_gpio_flags(np, "gpios", index, flags); -} - -/** - * of_get_named_gpio() - Get a GPIO number to use with GPIO API - * @np: device node to get GPIO from - * @propname: Name of property containing gpio specifier(s) - * @index: index of the GPIO - * - * Returns GPIO number to use with Linux generic GPIO API, or one of the errno - * value on the error condition. - */ -static inline int of_get_named_gpio(struct device_node *np, - const char *propname, int index) -{ - return of_get_named_gpio_flags(np, propname, index, NULL); -} - -/** - * of_get_gpio() - Get a GPIO number to use with GPIO API - * @np: device node to get GPIO from - * @index: index of the GPIO - * - * Returns GPIO number to use with Linux generic GPIO API, or one of the errno - * value on the error condition. - */ -static inline int of_get_gpio(struct device_node *np, int index) -{ - return of_get_gpio_flags(np, index, NULL); -} - -#endif /* __LINUX_OF_GPIO_H */ |