include/linux/platform_data/mmc-sdhci-s3c.h

   1 #ifndef __PLATFORM_DATA_SDHCI_S3C_H
   2 #define __PLATFORM_DATA_SDHCI_S3C_H
   3
   4 struct platform_device;
   5
   6 enum cd_types {
   7         S3C_SDHCI_CD_INTERNAL,  /* use mmc internal CD line */
   8         S3C_SDHCI_CD_EXTERNAL,  /* use external callback */
   9         S3C_SDHCI_CD_GPIO,      /* use external gpio pin for CD line */
  10         S3C_SDHCI_CD_NONE,      /* no CD line, use polling to detect card */
  11         S3C_SDHCI_CD_PERMANENT, /* no CD line, card permanently wired to host */
  12 };
  13
  14 /**
  15  * struct s3c_sdhci_platdata() - Platform device data for Samsung SDHCI
  16  * @max_width: The maximum number of data bits supported.
  17  * @host_caps: Standard MMC host capabilities bit field.
  18  * @host_caps2: The second standard MMC host capabilities bit field.
  19  * @cd_type: Type of Card Detection method (see cd_types enum above)
  20  * @ext_cd_init: Initialize external card detect subsystem. Called on
  21  *               sdhci-s3c driver probe when cd_type == S3C_SDHCI_CD_EXTERNAL.
  22  *               notify_func argument is a callback to the sdhci-s3c driver
  23  *               that triggers the card detection event. Callback arguments:
  24  *               dev is pointer to platform device of the host controller,
  25  *               state is new state of the card (0 - removed, 1 - inserted).
  26  * @ext_cd_cleanup: Cleanup external card detect subsystem. Called on
  27  *               sdhci-s3c driver remove when cd_type == S3C_SDHCI_CD_EXTERNAL.
  28  *               notify_func argument is the same callback as for ext_cd_init.
  29  * @ext_cd_gpio: gpio pin used for external CD line, valid only if
  30  *               cd_type == S3C_SDHCI_CD_GPIO
  31  * @ext_cd_gpio_invert: invert values for external CD gpio line
  32  * @cfg_gpio: Configure the GPIO for a specific card bit-width
  33  *
  34  * Initialisation data specific to either the machine or the platform
  35  * for the device driver to use or call-back when configuring gpio or
  36  * card speed information.
  37 */
  38 struct s3c_sdhci_platdata {
  39         unsigned int    max_width;
  40         unsigned int    host_caps;
  41         unsigned int    host_caps2;
  42         unsigned int    pm_caps;
  43         enum cd_types   cd_type;
  44
  45         int             ext_cd_gpio;
  46         bool            ext_cd_gpio_invert;
  47         int     (*ext_cd_init)(void (*notify_func)(struct platform_device *,
  48                                                    int state));
  49         int     (*ext_cd_cleanup)(void (*notify_func)(struct platform_device *,
  50                                                       int state));
  51
  52         void    (*cfg_gpio)(struct platform_device *dev, int width);
  53 };
  54
  55
  56 #endif /* __PLATFORM_DATA_SDHCI_S3C_H */