arch/arm/mach-s3c64xx/setup-sdhci-gpio.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 //
   3 // Copyright 2008 Simtec Electronics
   4 //      Ben Dooks <ben@simtec.co.uk>
   5 //      http://armlinux.simtec.co.uk/
   6 //
   7 // S3C64XX - Helper functions for setting up SDHCI device(s) GPIO (HSMMC)
   8
   9 #include <linux/kernel.h>
  10 #include <linux/types.h>
  11 #include <linux/interrupt.h>
  12 #include <linux/platform_device.h>
  13 #include <linux/io.h>
  14 #include <linux/gpio.h>
  15
  16 #include <plat/gpio-cfg.h>
  17 #include <plat/sdhci.h>
  18 #include <mach/gpio-samsung.h>
  19
  20 void s3c64xx_setup_sdhci0_cfg_gpio(struct platform_device *dev, int width)
  21 {
  22         struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;
  23
  24         /* Set all the necessary GPG pins to special-function 2 */
  25         s3c_gpio_cfgrange_nopull(S3C64XX_GPG(0), 2 + width, S3C_GPIO_SFN(2));
  26
  27         if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
  28                 s3c_gpio_setpull(S3C64XX_GPG(6), S3C_GPIO_PULL_UP);
  29                 s3c_gpio_cfgpin(S3C64XX_GPG(6), S3C_GPIO_SFN(2));
  30         }
  31 }
  32
  33 void s3c64xx_setup_sdhci1_cfg_gpio(struct platform_device *dev, int width)
  34 {
  35         struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;
  36
  37         /* Set all the necessary GPH pins to special-function 2 */
  38         s3c_gpio_cfgrange_nopull(S3C64XX_GPH(0), 2 + width, S3C_GPIO_SFN(2));
  39
  40         if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
  41                 s3c_gpio_setpull(S3C64XX_GPG(6), S3C_GPIO_PULL_UP);
  42                 s3c_gpio_cfgpin(S3C64XX_GPG(6), S3C_GPIO_SFN(3));
  43         }
  44 }
  45
  46 void s3c64xx_setup_sdhci2_cfg_gpio(struct platform_device *dev, int width)
  47 {
  48         /* Set all the necessary GPH pins to special-function 3 */
  49         s3c_gpio_cfgrange_nopull(S3C64XX_GPH(6), width, S3C_GPIO_SFN(3));
  50
  51         /* Set all the necessary GPC pins to special-function 3 */
  52         s3c_gpio_cfgrange_nopull(S3C64XX_GPC(4), 2, S3C_GPIO_SFN(3));
  53 }