arch/arm/mach-s5pv210/setup-sdhci-gpio.c

   1 /* linux/arch/arm/plat-s5pc1xx/setup-sdhci-gpio.c
   2  *
   3  * Copyright (c) 2009-2010 Samsung Electronics Co., Ltd.
   4  *              http://www.samsung.com/
   5  *
   6  * S5PV210 - Helper functions for setting up SDHCI device(s) GPIO (HSMMC)
   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/kernel.h>
  14 #include <linux/types.h>
  15 #include <linux/interrupt.h>
  16 #include <linux/platform_device.h>
  17 #include <linux/io.h>
  18 #include <linux/gpio.h>
  19 #include <linux/mmc/host.h>
  20 #include <linux/mmc/card.h>
  21
  22 #include <plat/gpio-cfg.h>
  23 #include <plat/regs-sdhci.h>
  24 #include <plat/sdhci.h>
  25
  26 void s5pv210_setup_sdhci0_cfg_gpio(struct platform_device *dev, int width)
  27 {
  28         struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;
  29
  30         /* Set all the necessary GPG0/GPG1 pins to special-function 2 */
  31         s3c_gpio_cfgrange_nopull(S5PV210_GPG0(0), 2, S3C_GPIO_SFN(2));
  32
  33         switch (width) {
  34         case 8:
  35                 /* GPG1[3:6] special-function 3 */
  36                 s3c_gpio_cfgrange_nopull(S5PV210_GPG1(3), 4, S3C_GPIO_SFN(3));
  37         case 4:
  38                 /* GPG0[3:6] special-function 2 */
  39                 s3c_gpio_cfgrange_nopull(S5PV210_GPG0(3), 4, S3C_GPIO_SFN(2));
  40         default:
  41                 break;
  42         }
  43
  44         if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
  45                 s3c_gpio_setpull(S5PV210_GPG0(2), S3C_GPIO_PULL_UP);
  46                 s3c_gpio_cfgpin(S5PV210_GPG0(2), S3C_GPIO_SFN(2));
  47         }
  48 }
  49
  50 void s5pv210_setup_sdhci1_cfg_gpio(struct platform_device *dev, int width)
  51 {
  52         struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;
  53
  54         /* Set all the necessary GPG1[0:1] pins to special-function 2 */
  55         s3c_gpio_cfgrange_nopull(S5PV210_GPG1(0), 2, S3C_GPIO_SFN(2));
  56
  57         /* Data pin GPG1[3:6] to special-function 2 */
  58         s3c_gpio_cfgrange_nopull(S5PV210_GPG1(3), 4, S3C_GPIO_SFN(2));
  59
  60         if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
  61                 s3c_gpio_setpull(S5PV210_GPG1(2), S3C_GPIO_PULL_UP);
  62                 s3c_gpio_cfgpin(S5PV210_GPG1(2), S3C_GPIO_SFN(2));
  63         }
  64 }
  65
  66 void s5pv210_setup_sdhci2_cfg_gpio(struct platform_device *dev, int width)
  67 {
  68         struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;
  69
  70         /* Set all the necessary GPG2[0:1] pins to special-function 2 */
  71         s3c_gpio_cfgrange_nopull(S5PV210_GPG2(0), 2, S3C_GPIO_SFN(2));
  72
  73         switch (width) {
  74         case 8:
  75                 /* Data pin GPG3[3:6] to special-function 3 */
  76                 s3c_gpio_cfgrange_nopull(S5PV210_GPG3(3), 4, S3C_GPIO_SFN(3));
  77         case 4:
  78                 /* Data pin GPG2[3:6] to special-function 2 */
  79                 s3c_gpio_cfgrange_nopull(S5PV210_GPG2(3), 4, S3C_GPIO_SFN(2));
  80         default:
  81                 break;
  82         }
  83
  84         if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
  85                 s3c_gpio_setpull(S5PV210_GPG2(2), S3C_GPIO_PULL_UP);
  86                 s3c_gpio_cfgpin(S5PV210_GPG2(2), S3C_GPIO_SFN(2));
  87         }
  88 }
  89
  90 void s5pv210_setup_sdhci3_cfg_gpio(struct platform_device *dev, int width)
  91 {
  92         struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;
  93
  94         /* Set all the necessary GPG3[0:1] pins to special-function 2 */
  95         s3c_gpio_cfgrange_nopull(S5PV210_GPG3(0), 2, S3C_GPIO_SFN(2));
  96
  97         /* Data pin GPG3[3:6] to special-function 2 */
  98         s3c_gpio_cfgrange_nopull(S5PV210_GPG3(3), 4, S3C_GPIO_SFN(2));
  99
 100         if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
 101                 s3c_gpio_setpull(S5PV210_GPG3(2), S3C_GPIO_PULL_UP);
 102                 s3c_gpio_cfgpin(S5PV210_GPG3(2), S3C_GPIO_SFN(2));
 103         }
 104 }