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/regs-sdhci.h>
  23 #include <plat/sdhci.h>
  24
  25 void s5pc100_setup_sdhci0_cfg_gpio(struct platform_device *dev, int width)
  26 {
  27         struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;
  28         unsigned int num;
  29
  30         num = width;
  31         /* In case of 8 width, we should decrease the 2 */
  32         if (width == 8)
  33                 num = width - 2;
  34
  35         /* Set all the necessary GPG0/GPG1 pins to special-function 0 */
  36         s3c_gpio_cfgrange_nopull(S5PC100_GPG0(0), 2 + num, S3C_GPIO_SFN(2));
  37
  38         if (width == 8)
  39                 s3c_gpio_cfgrange_nopull(S5PC100_GPG1(0), 2, S3C_GPIO_SFN(2));
  40
  41         if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
  42                 s3c_gpio_setpull(S5PC100_GPG1(2), S3C_GPIO_PULL_UP);
  43                 s3c_gpio_cfgpin(S5PC100_GPG1(2), S3C_GPIO_SFN(2));
  44         }
  45 }
  46
  47 void s5pc100_setup_sdhci1_cfg_gpio(struct platform_device *dev, int width)
  48 {
  49         struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;
  50
  51         /* Set all the necessary GPG2 pins to special-function 2 */
  52         s3c_gpio_cfgrange_nopull(S5PC100_GPG2(0), 2 + width, S3C_GPIO_SFN(2));
  53
  54         if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
  55                 s3c_gpio_setpull(S5PC100_GPG2(6), S3C_GPIO_PULL_UP);
  56                 s3c_gpio_cfgpin(S5PC100_GPG2(6), S3C_GPIO_SFN(2));
  57         }
  58 }
  59
  60 void s5pc100_setup_sdhci2_cfg_gpio(struct platform_device *dev, int width)
  61 {
  62         struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;
  63
  64         /* Set all the necessary GPG3 pins to special-function 2 */
  65         s3c_gpio_cfgrange_nopull(S5PC100_GPG3(0), 2 + width, S3C_GPIO_SFN(2));
  66
  67         if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
  68                 s3c_gpio_setpull(S5PC100_GPG3(6), S3C_GPIO_PULL_UP);
  69                 s3c_gpio_cfgpin(S5PC100_GPG3(6), S3C_GPIO_SFN(2));
  70         }
  71 }