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/* linux/arch/arm/plat-s3c/include/plat/gpio-core.h
*
* Copyright 2008 Simtec Electronics
* http://armlinux.simtec.co.uk/
* Ben Dooks <ben@simtec.co.uk>
*
* S3C Platform - GPIO core
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
/* Define the core gpiolib support functions that the s3c platforms may
* need to extend or change depending on the hardware and the s3c chip
* selected at build or found at run time.
*
* These definitions are not intended for driver inclusion, there is
* nothing here that should not live outside the platform and core
* specific code.
*/
/**
* struct s3c_gpio_chip - wrapper for specific implementation of gpio
* @chip: The chip structure to be exported via gpiolib.
* @base: The base pointer to the gpio configuration registers.
*
* This wrapper provides the necessary information for the Samsung
* specific gpios being registered with gpiolib.
*/
struct s3c_gpio_chip {
struct gpio_chip chip;
void __iomem *base;
};
static inline struct s3c_gpio_chip *to_s3c_gpio(struct gpio_chip *gpc)
{
return container_of(gpc, struct s3c_gpio_chip, chip);
}
/** s3c_gpiolib_add() - add the s3c specific version of a gpio_chip.
* @chip: The chip to register
*
* This is a wrapper to gpiochip_add() that takes our specific gpio chip
* information and makes the necessary alterations for the platform and
* notes the information for use with the configuration systems and any
* other parts of the system.
*/
extern void s3c_gpiolib_add(struct s3c_gpio_chip *chip);
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