LXR linux/arch/arm/mach-s5p64x0/setup-sdhci-gpio.c

   1/* linux/arch/arm/mach-s5p64x0/setup-sdhci-gpio.c
   2 *
   3 * Copyright (c) 2011 Samsung Electronics Co., Ltd.
   4 *              http://www.samsung.com/
   5 *
   6 * S5P64X0 - 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/platform_device.h>
  14#include <linux/io.h>
  15#include <linux/gpio.h>
  16
  17#include <mach/regs-gpio.h>
  18#include <mach/regs-clock.h>
  19
  20#include <plat/gpio-cfg.h>
  21#include <plat/sdhci.h>
  22#include <plat/cpu.h>
  23
  24void s5p64x0_setup_sdhci0_cfg_gpio(struct platform_device *dev, int width)
  25{
  26        struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;
  27
  28        /* Set all the necessary GPG pins to special-function 2 */
  29        if (soc_is_s5p6450())
  30                s3c_gpio_cfgrange_nopull(S5P6450_GPG(0), 2 + width,
  31                                         S3C_GPIO_SFN(2));
  32        else
  33                s3c_gpio_cfgrange_nopull(S5P6440_GPG(0), 2 + width,
  34                                         S3C_GPIO_SFN(2));
  35
  36        /* Set GPG[6] pin to special-function 2 - MMC0 CDn */
  37        if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
  38                if (soc_is_s5p6450()) {
  39                        s3c_gpio_setpull(S5P6450_GPG(6), S3C_GPIO_PULL_UP);
  40                        s3c_gpio_cfgpin(S5P6450_GPG(6), S3C_GPIO_SFN(2));
  41                } else {
  42                        s3c_gpio_setpull(S5P6440_GPG(6), S3C_GPIO_PULL_UP);
  43                        s3c_gpio_cfgpin(S5P6440_GPG(6), S3C_GPIO_SFN(2));
  44                }
  45        }
  46}
  47
  48void s5p64x0_setup_sdhci1_cfg_gpio(struct platform_device *dev, int width)
  49{
  50        struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;
  51
  52        /* Set GPH[0:1] pins to special-function 2 - CLK and CMD */
  53        if (soc_is_s5p6450())
  54                s3c_gpio_cfgrange_nopull(S5P6450_GPH(0), 2, S3C_GPIO_SFN(2));
  55        else
  56                s3c_gpio_cfgrange_nopull(S5P6440_GPH(0), 2 , S3C_GPIO_SFN(2));
  57
  58        switch (width) {
  59        case 8:
  60                /* Set data pins GPH[6:9] special-function 2 */
  61                if (soc_is_s5p6450())
  62                        s3c_gpio_cfgrange_nopull(S5P6450_GPH(6), 4,
  63                                                 S3C_GPIO_SFN(2));
  64                else
  65                        s3c_gpio_cfgrange_nopull(S5P6440_GPH(6), 4,
  66                                                 S3C_GPIO_SFN(2));
  67        case 4:
  68                /* set data pins GPH[2:5] special-function 2 */
  69                if (soc_is_s5p6450())
  70                        s3c_gpio_cfgrange_nopull(S5P6450_GPH(2), 4,
  71                                                 S3C_GPIO_SFN(2));
  72                else
  73                        s3c_gpio_cfgrange_nopull(S5P6440_GPH(2), 4,
  74                                                 S3C_GPIO_SFN(2));
  75        default:
  76                break;
  77        }
  78
  79        /* Set GPG[6] pin to special-funtion 3 : MMC1 CDn */
  80        if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
  81                if (soc_is_s5p6450()) {
  82                        s3c_gpio_setpull(S5P6450_GPG(6), S3C_GPIO_PULL_UP);
  83                        s3c_gpio_cfgpin(S5P6450_GPG(6), S3C_GPIO_SFN(3));
  84                } else {
  85                        s3c_gpio_setpull(S5P6440_GPG(6), S3C_GPIO_PULL_UP);
  86                        s3c_gpio_cfgpin(S5P6440_GPG(6), S3C_GPIO_SFN(3));
  87                }
  88        }
  89}
  90
  91void s5p6440_setup_sdhci2_cfg_gpio(struct platform_device *dev, int width)
  92{
  93        /* Set GPC[4:5] pins to special-function 3 - CLK and CMD */
  94        s3c_gpio_cfgrange_nopull(S5P6440_GPC(4), 2, S3C_GPIO_SFN(3));
  95
  96        /* Set data pins GPH[6:9] pins to special-function 3 */
  97        s3c_gpio_cfgrange_nopull(S5P6440_GPH(6), 4, S3C_GPIO_SFN(3));
  98}
  99
 100void s5p6450_setup_sdhci2_cfg_gpio(struct platform_device *dev, int width)
 101{
 102        /* Set all the necessary GPG pins to special-function 3 */
 103        s3c_gpio_cfgrange_nopull(S5P6450_GPG(7), 2 + width, S3C_GPIO_SFN(3));
 104}
 105