[deliverable/linux.git] / arch / arm / mach-s3c2410 / include / mach / gpio-track.h

/* arch/arm/mach-s3c24100/include/mach/gpio-core.h
 *
 * Copyright 2008 Openmoko, Inc.
 * Copyright 2008 Simtec Electronics
 *      Ben Dooks <ben@simtec.co.uk>
 *      http://armlinux.simtec.co.uk/
 *
 * S3C2410 - GPIO core support
 *
 * 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.
*/

#ifndef __ASM_ARCH_GPIO_CORE_H
#define __ASM_ARCH_GPIO_CORE_H __FILE__

#include <mach/regs-gpio.h>

extern struct samsung_gpio_chip s3c24xx_gpios[];

static inline struct samsung_gpio_chip *samsung_gpiolib_getchip(unsigned int pin)
{
	struct samsung_gpio_chip *chip;

	if (pin > S3C_GPIO_END)
		return NULL;

	chip = &s3c24xx_gpios[pin/32];
	return ((pin - chip->chip.base) < chip->chip.ngpio) ? chip : NULL;
}

#endif /* __ASM_ARCH_GPIO_CORE_H */
Commit	Line	Data
21b23664 BD	1	/* arch/arm/mach-s3c24100/include/mach/gpio-core.h
	2	*
	3	* Copyright 2008 Openmoko, Inc.
	4	* Copyright 2008 Simtec Electronics
	5	* Ben Dooks <ben@simtec.co.uk>
	6	* http://armlinux.simtec.co.uk/
	7	*
	8	* S3C2410 - GPIO core support
	9	*
	10	* This program is free software; you can redistribute it and/or modify
	11	* it under the terms of the GNU General Public License version 2 as
	12	* published by the Free Software Foundation.
	13	*/
	14
	15	#ifndef __ASM_ARCH_GPIO_CORE_H
	16	#define __ASM_ARCH_GPIO_CORE_H __FILE__
	17
21b23664 BD	18	#include <mach/regs-gpio.h>
21b23664 BD	19
782d8a3c	20	extern struct samsung_gpio_chip s3c24xx_gpios[];
21b23664	21
782d8a3c	22	static inline struct samsung_gpio_chip *samsung_gpiolib_getchip(unsigned int pin)
21b23664	23	{
782d8a3c	24	struct samsung_gpio_chip *chip;
21b23664	25
a0026418	26	if (pin > S3C_GPIO_END)
21b23664 BD	27	return NULL;
	28
	29	chip = &s3c24xx_gpios[pin/32];
1635ca4a	30	return ((pin - chip->chip.base) < chip->chip.ngpio) ? chip : NULL;
21b23664 BD	31	}
	32
	33	#endif /* __ASM_ARCH_GPIO_CORE_H */