35 lines
1.0 KiB
C
35 lines
1.0 KiB
C
/*
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* linux/arch/arm/mach-s5pv210/setup-keypad.c
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*
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* Copyright (C) 2010 Samsung Electronics Co.Ltd
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* Author: Joonyoung Shim <jy0922.shim@samsung.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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*/
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#include <linux/gpio.h>
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#include <plat/gpio-cfg.h>
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void samsung_keypad_cfg_gpio(unsigned int rows, unsigned int cols)
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{
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unsigned int gpio, end;
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/* Set all the necessary GPH3 pins to special-function 3: KP_ROW[x] */
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end = S5PV210_GPH3(rows);
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for (gpio = S5PV210_GPH3(0); gpio < end; gpio++) {
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s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(3));
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s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
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}
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/* Set all the necessary GPH2 pins to special-function 3: KP_COL[x] */
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end = S5PV210_GPH2(cols);
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for (gpio = S5PV210_GPH2(0); gpio < end; gpio++) {
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s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(3));
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s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
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}
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}
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