LXR linux/include/linux/platform

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef __PLATFORM_DATA_SDHCI_S3C_H
   3#define __PLATFORM_DATA_SDHCI_S3C_H
   4
   5struct platform_device;
   6
   7enum cd_types {
   8        S3C_SDHCI_CD_INTERNAL,  /* use mmc internal CD line */
   9        S3C_SDHCI_CD_EXTERNAL,  /* use external callback */
  10        S3C_SDHCI_CD_GPIO,      /* use external gpio pin for CD line */
  11        S3C_SDHCI_CD_NONE,      /* no CD line, use polling to detect card */
  12        S3C_SDHCI_CD_PERMANENT, /* no CD line, card permanently wired to host */
  13};
  14
  15/**
  16 * struct s3c_sdhci_platdata() - Platform device data for Samsung SDHCI
  17 * @max_width: The maximum number of data bits supported.
  18 * @host_caps: Standard MMC host capabilities bit field.
  19 * @host_caps2: The second standard MMC host capabilities bit field.
  20 * @cd_type: Type of Card Detection method (see cd_types enum above)
  21 * @ext_cd_init: Initialize external card detect subsystem. Called on
  22 *               sdhci-s3c driver probe when cd_type == S3C_SDHCI_CD_EXTERNAL.
  23 *               notify_func argument is a callback to the sdhci-s3c driver
  24 *               that triggers the card detection event. Callback arguments:
  25 *               dev is pointer to platform device of the host controller,
  26 *               state is new state of the card (0 - removed, 1 - inserted).
  27 * @ext_cd_cleanup: Cleanup external card detect subsystem. Called on
  28 *               sdhci-s3c driver remove when cd_type == S3C_SDHCI_CD_EXTERNAL.
  29 *               notify_func argument is the same callback as for ext_cd_init.
  30 * @ext_cd_gpio: gpio pin used for external CD line, valid only if
  31 *               cd_type == S3C_SDHCI_CD_GPIO
  32 * @ext_cd_gpio_invert: invert values for external CD gpio line
  33 * @cfg_gpio: Configure the GPIO for a specific card bit-width
  34 *
  35 * Initialisation data specific to either the machine or the platform
  36 * for the device driver to use or call-back when configuring gpio or
  37 * card speed information.
  38*/
  39struct s3c_sdhci_platdata {
  40        unsigned int    max_width;
  41        unsigned int    host_caps;
  42        unsigned int    host_caps2;
  43        unsigned int    pm_caps;
  44        enum cd_types   cd_type;
  45
  46        int             ext_cd_gpio;
  47        bool            ext_cd_gpio_invert;
  48        int     (*ext_cd_init)(void (*notify_func)(struct platform_device *,
  49                                                   int state));
  50        int     (*ext_cd_cleanup)(void (*notify_func)(struct platform_device *,
  51                                                      int state));
  52
  53        void    (*cfg_gpio)(struct platform_device *dev, int width);
  54};
  55
  56
  57#endif /* __PLATFORM_DATA_SDHCI_S3C_H */
  58