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e7d0628c JS |
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 | ||
17 | void 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 | } |