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