LXR linux/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
  26void 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
  50void 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
  66void 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
  90void 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}
 105