arch/arm/mach-s3c64xx/setup-keypad.c

   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 #include <plat/keypad.h>
  16
  17 void samsung_keypad_cfg_gpio(unsigned int rows, unsigned int cols)
  18 {
  19         /* Set all the necessary GPK pins to special-function 3: KP_ROW[x] */
  20         s3c_gpio_cfgrange_nopull(S3C64XX_GPK(8), rows, S3C_GPIO_SFN(3));
  21
  22         /* Set all the necessary GPL pins to special-function 3: KP_COL[x] */
  23         s3c_gpio_cfgrange_nopull(S3C64XX_GPL(0), cols, S3C_GPIO_SFN(3));
  24 }