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/sdhci.h>
  24
  25 void s5pv210_setup_sdhci0_cfg_gpio(struct platform_device *dev, int width)
  26 {
  27         struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;
  28
  29         /* Set all the necessary GPG0/GPG1 pins to special-function 2 */
  30         s3c_gpio_cfgrange_nopull(S5PV210_GPG0(0), 2, S3C_GPIO_SFN(2));
  31
  32         switch (width) {
  33         case 8:
  34                 /* GPG1[3:6] special-function 3 */
  35                 s3c_gpio_cfgrange_nopull(S5PV210_GPG1(3), 4, S3C_GPIO_SFN(3));
  36         case 4:
  37                 /* GPG0[3:6] special-function 2 */
  38                 s3c_gpio_cfgrange_nopull(S5PV210_GPG0(3), 4, S3C_GPIO_SFN(2));
  39         default:
  40                 break;
  41         }
  42
  43         if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
  44                 s3c_gpio_setpull(S5PV210_GPG0(2), S3C_GPIO_PULL_UP);
  45                 s3c_gpio_cfgpin(S5PV210_GPG0(2), S3C_GPIO_SFN(2));
  46         }
  47 }
  48
  49 void s5pv210_setup_sdhci1_cfg_gpio(struct platform_device *dev, int width)
  50 {
  51         struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;
  52
  53         /* Set all the necessary GPG1[0:1] pins to special-function 2 */
  54         s3c_gpio_cfgrange_nopull(S5PV210_GPG1(0), 2, S3C_GPIO_SFN(2));
  55
  56         /* Data pin GPG1[3:6] to special-function 2 */
  57         s3c_gpio_cfgrange_nopull(S5PV210_GPG1(3), 4, S3C_GPIO_SFN(2));
  58
  59         if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
  60                 s3c_gpio_setpull(S5PV210_GPG1(2), S3C_GPIO_PULL_UP);
  61                 s3c_gpio_cfgpin(S5PV210_GPG1(2), S3C_GPIO_SFN(2));
  62         }
  63 }
  64
  65 void s5pv210_setup_sdhci2_cfg_gpio(struct platform_device *dev, int width)
  66 {
  67         struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;
  68
  69         /* Set all the necessary GPG2[0:1] pins to special-function 2 */
  70         s3c_gpio_cfgrange_nopull(S5PV210_GPG2(0), 2, S3C_GPIO_SFN(2));
  71
  72         switch (width) {
  73         case 8:
  74                 /* Data pin GPG3[3:6] to special-function 3 */
  75                 s3c_gpio_cfgrange_nopull(S5PV210_GPG3(3), 4, S3C_GPIO_SFN(3));
  76         case 4:
  77                 /* Data pin GPG2[3:6] to special-function 2 */
  78                 s3c_gpio_cfgrange_nopull(S5PV210_GPG2(3), 4, S3C_GPIO_SFN(2));
  79         default:
  80                 break;
  81         }
  82
  83         if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
  84                 s3c_gpio_setpull(S5PV210_GPG2(2), S3C_GPIO_PULL_UP);
  85                 s3c_gpio_cfgpin(S5PV210_GPG2(2), S3C_GPIO_SFN(2));
  86         }
  87 }
  88
  89 void s5pv210_setup_sdhci3_cfg_gpio(struct platform_device *dev, int width)
  90 {
  91         struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;
  92
  93         /* Set all the necessary GPG3[0:1] pins to special-function 2 */
  94         s3c_gpio_cfgrange_nopull(S5PV210_GPG3(0), 2, S3C_GPIO_SFN(2));
  95
  96         /* Data pin GPG3[3:6] to special-function 2 */
  97         s3c_gpio_cfgrange_nopull(S5PV210_GPG3(3), 4, S3C_GPIO_SFN(2));
  98
  99         if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
 100                 s3c_gpio_setpull(S5PV210_GPG3(2), S3C_GPIO_PULL_UP);
 101                 s3c_gpio_cfgpin(S5PV210_GPG3(2), S3C_GPIO_SFN(2));
 102         }
 103 }