include/linux/platform_data/mmc-esdhc-imx.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Copyright 2010 Wolfram Sang <w.sang@pengutronix.de>
   4  */
   5
   6 #ifndef __ASM_ARCH_IMX_ESDHC_H
   7 #define __ASM_ARCH_IMX_ESDHC_H
   8
   9 #include <linux/types.h>
  10
  11 enum wp_types {
  12         ESDHC_WP_NONE,          /* no WP, neither controller nor gpio */
  13         ESDHC_WP_CONTROLLER,    /* mmc controller internal WP */
  14         ESDHC_WP_GPIO,          /* external gpio pin for WP */
  15 };
  16
  17 enum cd_types {
  18         ESDHC_CD_NONE,          /* no CD, neither controller nor gpio */
  19         ESDHC_CD_CONTROLLER,    /* mmc controller internal CD */
  20         ESDHC_CD_GPIO,          /* external gpio pin for CD */
  21         ESDHC_CD_PERMANENT,     /* no CD, card permanently wired to host */
  22 };
  23
  24 /**
  25  * struct esdhc_platform_data - platform data for esdhc on i.MX
  26  *
  27  * ESDHC_WP(CD)_CONTROLLER type is not available on i.MX25/35.
  28  *
  29  * @wp_type:    type of write_protect method (see wp_types enum above)
  30  * @cd_type:    type of card_detect method (see cd_types enum above)
  31  */
  32
  33 struct esdhc_platform_data {
  34         enum wp_types wp_type;
  35         enum cd_types cd_type;
  36         int max_bus_width;
  37         unsigned int delay_line;
  38         unsigned int tuning_step;       /* The delay cell steps in tuning procedure */
  39         unsigned int tuning_start_tap;  /* The start delay cell point in tuning procedure */
  40 };
  41 #endif /* __ASM_ARCH_IMX_ESDHC_H */