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290d0983 NKC |
1 | /* linux/arch/arm/mach-s3c64xx/setup-keypad.c |
2 | * | |
3 | * Copyright (c) 2010 Samsung Electronics Co., Ltd. | |
4 | * http://www.samsung.com/ | |
5 | * | |
6 | * GPIO configuration for S3C64XX 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 | ||
16 | void 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 GPK pins to special-function 3: KP_ROW[x] */ | |
22 | end = S3C64XX_GPK(8 + rows); | |
23 | for (gpio = S3C64XX_GPK(8); 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 GPL pins to special-function 3: KP_COL[x] */ | |
29 | end = S3C64XX_GPL(0 + cols); | |
30 | for (gpio = S3C64XX_GPL(0); gpio < end; gpio++) { | |
31 | s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(3)); | |
32 | s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE); | |
33 | } | |
34 | } |