35 lines
1.0 KiB
C
35 lines
1.0 KiB
C
/* linux/arch/arm/mach-s3c64xx/setup-keypad.c
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*
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* Copyright (c) 2010 Samsung Electronics Co., Ltd.
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* http://www.samsung.com/
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*
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* GPIO configuration for S3C64XX KeyPad device
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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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;
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unsigned int end;
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/* Set all the necessary GPK pins to special-function 3: KP_ROW[x] */
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end = S3C64XX_GPK(8 + rows);
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for (gpio = S3C64XX_GPK(8); 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 GPL pins to special-function 3: KP_COL[x] */
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end = S3C64XX_GPL(0 + cols);
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for (gpio = S3C64XX_GPL(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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