1/* 2 * linux/arch/arm/mach-s5pv210/setup-keypad.c 3 * 4 * Copyright (C) 2010 Samsung Electronics Co.Ltd 5 * Author: Joonyoung Shim <jy0922.shim@samsung.com> 6 * 7 * This program is free software; you can redistribute it and/or modify it 8 * under the terms of the GNU General Public License as published by the 9 * Free Software Foundation; either version 2 of the License, or (at your 10 * option) any later version. 11 * 12 */ 13 14#include <linux/gpio.h> 15#include <plat/gpio-cfg.h> 16 17void samsung_keypad_cfg_gpio(unsigned int rows, unsigned int cols) 18{ 19 unsigned int gpio, end; 20 21 /* Set all the necessary GPH3 pins to special-function 3: KP_ROW[x] */ 22 end = S5PV210_GPH3(rows); 23 for (gpio = S5PV210_GPH3(0); gpio < end; gpio++) { 24 s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(3)); 25 s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE); 26 } 27 28 /* Set all the necessary GPH2 pins to special-function 3: KP_COL[x] */ 29 end = S5PV210_GPH2(cols); 30 for (gpio = S5PV210_GPH2(0); gpio < end; gpio++) { 31 s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(3)); 32 s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE); 33 } 34} 35