blob: d0837a72a58e8a95e121edac2720635113ae13f5 [file] [log] [blame]
Naveen Krishna Ch2211f282010-06-22 07:54:18 +09001/* linux/arch/arm/mach-s5pc100/setup-keypad.c
2 *
3 * Copyright (c) 2010 Samsung Electronics Co., Ltd.
4 * http://www.samsung.com/
5 *
6 * GPIO configuration for S5PC100 KeyPad device
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11*/
12
13#include <linux/gpio.h>
14#include <plat/gpio-cfg.h>
15
16void samsung_keypad_cfg_gpio(unsigned int rows, unsigned int cols)
17{
18 unsigned int gpio;
19 unsigned int end;
20
21 /* Set all the necessary GPH3 pins to special-function 3: KP_ROW[x] */
22 end = S5PC100_GPH3(rows);
23 for (gpio = S5PC100_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 = S5PC100_GPH2(cols);
30 for (gpio = S5PC100_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}