arch/arm/mach-s5pc100/setup-sdhci-gpio.c

   1 /* linux/arch/arm/plat-s5pc100/setup-sdhci-gpio.c
   2  *
   3  * Copyright 2009 Samsung Eletronics
   4  *
   5  * S5PC100 - Helper functions for setting up SDHCI device(s) GPIO (HSMMC)
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10 */
  11
  12 #include <linux/kernel.h>
  13 #include <linux/types.h>
  14 #include <linux/interrupt.h>
  15 #include <linux/platform_device.h>
  16 #include <linux/io.h>
  17 #include <linux/gpio.h>
  18 #include <linux/mmc/host.h>
  19 #include <linux/mmc/card.h>
  20
  21 #include <plat/gpio-cfg.h>
  22 #include <plat/sdhci.h>
  23
  24 void s5pc100_setup_sdhci0_cfg_gpio(struct platform_device *dev, int width)
  25 {
  26         struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;
  27         unsigned int num;
  28
  29         num = width;
  30         /* In case of 8 width, we should decrease the 2 */
  31         if (width == 8)
  32                 num = width - 2;
  33
  34         /* Set all the necessary GPG0/GPG1 pins to special-function 0 */
  35         s3c_gpio_cfgrange_nopull(S5PC100_GPG0(0), 2 + num, S3C_GPIO_SFN(2));
  36
  37         if (width == 8)
  38                 s3c_gpio_cfgrange_nopull(S5PC100_GPG1(0), 2, S3C_GPIO_SFN(2));
  39
  40         if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
  41                 s3c_gpio_setpull(S5PC100_GPG1(2), S3C_GPIO_PULL_UP);
  42                 s3c_gpio_cfgpin(S5PC100_GPG1(2), S3C_GPIO_SFN(2));
  43         }
  44 }
  45
  46 void s5pc100_setup_sdhci1_cfg_gpio(struct platform_device *dev, int width)
  47 {
  48         struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;
  49
  50         /* Set all the necessary GPG2 pins to special-function 2 */
  51         s3c_gpio_cfgrange_nopull(S5PC100_GPG2(0), 2 + width, S3C_GPIO_SFN(2));
  52
  53         if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
  54                 s3c_gpio_setpull(S5PC100_GPG2(6), S3C_GPIO_PULL_UP);
  55                 s3c_gpio_cfgpin(S5PC100_GPG2(6), S3C_GPIO_SFN(2));
  56         }
  57 }
  58
  59 void s5pc100_setup_sdhci2_cfg_gpio(struct platform_device *dev, int width)
  60 {
  61         struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;
  62
  63         /* Set all the necessary GPG3 pins to special-function 2 */
  64         s3c_gpio_cfgrange_nopull(S5PC100_GPG3(0), 2 + width, S3C_GPIO_SFN(2));
  65
  66         if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
  67                 s3c_gpio_setpull(S5PC100_GPG3(6), S3C_GPIO_PULL_UP);
  68                 s3c_gpio_cfgpin(S5PC100_GPG3(6), S3C_GPIO_SFN(2));
  69         }
  70 }