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/* linux/arch/arm/mach-s3c64xx/setup-keypad.c
*
* Copyright (c) 2010 Samsung Electronics Co., Ltd.
* http://www.samsung.com/
*
* GPIO configuration for S3C64XX KeyPad device
*
* 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.
*/
#include <linux/gpio.h>
#include <plat/gpio-cfg.h>
void samsung_keypad_cfg_gpio(unsigned int rows, unsigned int cols)
{
unsigned int gpio;
unsigned int end;
/* Set all the necessary GPK pins to special-function 3: KP_ROW[x] */
end = S3C64XX_GPK(8 + rows);
for (gpio = S3C64XX_GPK(8); gpio < end; gpio++) {
s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(3));
s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
}
/* Set all the necessary GPL pins to special-function 3: KP_COL[x] */
end = S3C64XX_GPL(0 + cols);
for (gpio = S3C64XX_GPL(0); gpio < end; gpio++) {
s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(3));
s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
}
}
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