release/src-rt-6.x.4708/linux/linux-2.6.36/arch/arm/plat-s3c24xx/spi-bus0-gpe11_12_13.c

   1 /* linux/arch/arm/plat-s3c24xx/spi-bus0-gpe11_12_13.c
   2  *
   3  * Copyright (c) 2008 Simtec Electronics
   4  *      http://armlinux.simtec.co.uk/
   5  *      Ben Dooks <ben@simtec.co.uk>
   6  *
   7  * S3C24XX SPI - gpio configuration for bus 0 on gpe11,12,13
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License.
  12 */
  13
  14 #include <linux/kernel.h>
  15 #include <linux/gpio.h>
  16
  17 #include <mach/spi.h>
  18 #include <mach/regs-gpio.h>
  19
  20 void s3c24xx_spi_gpiocfg_bus0_gpe11_12_13(struct s3c2410_spi_info *spi,
  21                                           int enable)
  22 {
  23         if (enable) {
  24                 s3c_gpio_cfgpin(S3C2410_GPE(13), S3C2410_GPE13_SPICLK0);
  25                 s3c_gpio_cfgpin(S3C2410_GPE(12), S3C2410_GPE12_SPIMOSI0);
  26                 s3c_gpio_cfgpin(S3C2410_GPE(11), S3C2410_GPE11_SPIMISO0);
  27                 s3c2410_gpio_pullup(S3C2410_GPE(11), 0);
  28                 s3c2410_gpio_pullup(S3C2410_GPE(13), 0);
  29         } else {
  30                 s3c_gpio_cfgpin(S3C2410_GPE(13), S3C2410_GPIO_INPUT);
  31                 s3c_gpio_cfgpin(S3C2410_GPE(11), S3C2410_GPIO_INPUT);
  32                 s3c_gpio_cfgpull(S3C2410_GPE(11), S3C_GPIO_PULL_NONE);
  33                 s3c_gpio_cfgpull(S3C2410_GPE(12), S3C_GPIO_PULL_NONE);
  34                 s3c_gpio_cfgpull(S3C2410_GPE(13), S3C_GPIO_PULL_NONE);
  35         }
  36 }