LXR linux/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
  25void 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
  47void 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
  60void 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}
  72