arch/arm/mach-s3c64xx/setup-sdhci-gpio.c

   1 /* linux/arch/arm/plat-s3c64xx/setup-sdhci-gpio.c
   2  *
   3  * Copyright 2008 Simtec Electronics
   4  *      Ben Dooks <ben@simtec.co.uk>
   5  *      http://armlinux.simtec.co.uk/
   6  *
   7  * S3C64XX - Helper functions for setting up SDHCI device(s) GPIO (HSMMC)
   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 version 2 as
  11  * published by the Free Software Foundation.
  12 */
  13
  14 #include <linux/kernel.h>
  15 #include <linux/types.h>
  16 #include <linux/interrupt.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/io.h>
  19 #include <linux/gpio.h>
  20
  21 #include <plat/gpio-cfg.h>
  22 #include <plat/sdhci.h>
  23
  24 void s3c64xx_setup_sdhci0_cfg_gpio(struct platform_device *dev, int width)
  25 {
  26         struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;
  27
  28         /* Set all the necessary GPG pins to special-function 2 */
  29         s3c_gpio_cfgall_range(S3C64XX_GPG(0), 2 + width,
  30                               S3C_GPIO_SFN(2), S3C_GPIO_PULL_NONE);
  31
  32         if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
  33                 s3c_gpio_setpull(S3C64XX_GPG(6), S3C_GPIO_PULL_UP);
  34                 s3c_gpio_cfgpin(S3C64XX_GPG(6), S3C_GPIO_SFN(2));
  35         }
  36 }
  37
  38 void s3c64xx_setup_sdhci1_cfg_gpio(struct platform_device *dev, int width)
  39 {
  40         struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;
  41
  42         /* Set all the necessary GPH pins to special-function 2 */
  43         s3c_gpio_cfgall_range(S3C64XX_GPH(0), 2 + width,
  44                               S3C_GPIO_SFN(2), S3C_GPIO_PULL_NONE);
  45
  46         if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
  47                 s3c_gpio_setpull(S3C64XX_GPG(6), S3C_GPIO_PULL_UP);
  48                 s3c_gpio_cfgpin(S3C64XX_GPG(6), S3C_GPIO_SFN(3));
  49         }
  50 }
  51
  52 void s3c64xx_setup_sdhci2_cfg_gpio(struct platform_device *dev, int width)
  53 {
  54         /* Set all the necessary GPH pins to special-function 3 */
  55         s3c_gpio_cfgall_range(S3C64XX_GPH(6), width,
  56                               S3C_GPIO_SFN(3), S3C_GPIO_PULL_NONE);
  57
  58         /* Set all the necessary GPC pins to special-function 3 */
  59         s3c_gpio_cfgall_range(S3C64XX_GPC(4), 2,
  60                               S3C_GPIO_SFN(3), S3C_GPIO_PULL_NONE);
  61 }