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

   1 /* linux/arch/arm/mach-exynos4/setup-sdhci-gpio.c
   2  *
   3  * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
   4  *              http://www.samsung.com
   5  *
   6  * EXYNOS4 - 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 exynos4_setup_sdhci0_cfg_gpio(struct platform_device *dev, int width)
  27 {
  28         struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;
  29         unsigned int gpio;
  30
  31         /* Set all the necessary GPK0[0:1] pins to special-function 2 */
  32         for (gpio = EXYNOS4_GPK0(0); gpio < EXYNOS4_GPK0(2); gpio++) {
  33                 s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2));
  34                 s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
  35                 s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);
  36         }
  37
  38         switch (width) {
  39         case 8:
  40                 for (gpio = EXYNOS4_GPK1(3); gpio <= EXYNOS4_GPK1(6); gpio++) {
  41                         /* Data pin GPK1[3:6] to special-function 3 */
  42                         s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(3));
  43                         s3c_gpio_setpull(gpio, S3C_GPIO_PULL_UP);
  44                         s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);
  45                 }
  46         case 4:
  47                 for (gpio = EXYNOS4_GPK0(3); gpio <= EXYNOS4_GPK0(6); gpio++) {
  48                         /* Data pin GPK0[3:6] to special-function 2 */
  49                         s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2));
  50                         s3c_gpio_setpull(gpio, S3C_GPIO_PULL_UP);
  51                         s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);
  52                 }
  53         default:
  54                 break;
  55         }
  56
  57         if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
  58                 s3c_gpio_cfgpin(EXYNOS4_GPK0(2), S3C_GPIO_SFN(2));
  59                 s3c_gpio_setpull(EXYNOS4_GPK0(2), S3C_GPIO_PULL_UP);
  60                 s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);
  61         }
  62 }
  63
  64 void exynos4_setup_sdhci1_cfg_gpio(struct platform_device *dev, int width)
  65 {
  66         struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;
  67         unsigned int gpio;
  68
  69         /* Set all the necessary GPK1[0:1] pins to special-function 2 */
  70         for (gpio = EXYNOS4_GPK1(0); gpio < EXYNOS4_GPK1(2); gpio++) {
  71                 s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2));
  72                 s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
  73                 s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);
  74         }
  75
  76         for (gpio = EXYNOS4_GPK1(3); gpio <= EXYNOS4_GPK1(6); gpio++) {
  77                 /* Data pin GPK1[3:6] to special-function 2 */
  78                 s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2));
  79                 s3c_gpio_setpull(gpio, S3C_GPIO_PULL_UP);
  80                 s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);
  81         }
  82
  83         if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
  84                 s3c_gpio_cfgpin(EXYNOS4_GPK1(2), S3C_GPIO_SFN(2));
  85                 s3c_gpio_setpull(EXYNOS4_GPK1(2), S3C_GPIO_PULL_UP);
  86                 s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);
  87         }
  88 }
  89
  90 void exynos4_setup_sdhci2_cfg_gpio(struct platform_device *dev, int width)
  91 {
  92         struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;
  93         unsigned int gpio;
  94
  95         /* Set all the necessary GPK2[0:1] pins to special-function 2 */
  96         for (gpio = EXYNOS4_GPK2(0); gpio < EXYNOS4_GPK2(2); gpio++) {
  97                 s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2));
  98                 s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
  99                 s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);
 100         }
 101
 102         switch (width) {
 103         case 8:
 104                 for (gpio = EXYNOS4_GPK3(3); gpio <= EXYNOS4_GPK3(6); gpio++) {
 105                         /* Data pin GPK3[3:6] to special-function 3 */
 106                         s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(3));
 107                         s3c_gpio_setpull(gpio, S3C_GPIO_PULL_UP);
 108                         s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);
 109                 }
 110         case 4:
 111                 for (gpio = EXYNOS4_GPK2(3); gpio <= EXYNOS4_GPK2(6); gpio++) {
 112                         /* Data pin GPK2[3:6] to special-function 2 */
 113                         s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2));
 114                         s3c_gpio_setpull(gpio, S3C_GPIO_PULL_UP);
 115                         s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);
 116                 }
 117         default:
 118                 break;
 119         }
 120
 121         if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
 122                 s3c_gpio_cfgpin(EXYNOS4_GPK2(2), S3C_GPIO_SFN(2));
 123                 s3c_gpio_setpull(EXYNOS4_GPK2(2), S3C_GPIO_PULL_UP);
 124                 s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);
 125         }
 126 }
 127
 128 void exynos4_setup_sdhci3_cfg_gpio(struct platform_device *dev, int width)
 129 {
 130         struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;
 131         unsigned int gpio;
 132
 133         /* Set all the necessary GPK3[0:1] pins to special-function 2 */
 134         for (gpio = EXYNOS4_GPK3(0); gpio < EXYNOS4_GPK3(2); gpio++) {
 135                 s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2));
 136                 s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
 137                 s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);
 138         }
 139
 140         for (gpio = EXYNOS4_GPK3(3); gpio <= EXYNOS4_GPK3(6); gpio++) {
 141                 /* Data pin GPK3[3:6] to special-function 2 */
 142                 s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2));
 143                 s3c_gpio_setpull(gpio, S3C_GPIO_PULL_UP);
 144                 s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);
 145         }
 146
 147         if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
 148                 s3c_gpio_cfgpin(EXYNOS4_GPK3(2), S3C_GPIO_SFN(2));
 149                 s3c_gpio_setpull(EXYNOS4_GPK3(2), S3C_GPIO_PULL_UP);
 150                 s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);
 151         }
 152 }