From 7db6c82a37beabef7b76d232e3d20efacd74bd3a Mon Sep 17 00:00:00 2001 From: Ben Dooks Date: Fri, 31 Oct 2008 16:14:31 +0000 Subject: [ARM] S3C: Move common GPIO code from plat-s3c24xx Move the common parts of the GPIO code into plat-s3c for use with both the s3c24xx and s3c64xx systems. Signed-off-by: Ben Dooks --- arch/arm/plat-s3c/include/plat/gpio-core.h | 49 ++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 arch/arm/plat-s3c/include/plat/gpio-core.h (limited to 'arch/arm/plat-s3c/include') diff --git a/arch/arm/plat-s3c/include/plat/gpio-core.h b/arch/arm/plat-s3c/include/plat/gpio-core.h new file mode 100644 index 0000000..3cb9105 --- /dev/null +++ b/arch/arm/plat-s3c/include/plat/gpio-core.h @@ -0,0 +1,49 @@ +/* linux/arch/arm/plat-s3c/include/plat/gpio-core.h + * + * Copyright 2008 Simtec Electronics + * http://armlinux.simtec.co.uk/ + * Ben Dooks + * + * 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); -- cgit v1.1