LXR linux/include/linux/platform

   1/*
   2 * Copyright 2010 Wolfram Sang <w.sang@pengutronix.de>
   3 *
   4 * This program is free software; you can redistribute it and/or
   5 * modify it under the terms of the GNU General Public License
   6 * as published by the Free Software Foundation; version 2
   7 * of the License.
   8 */
   9
  10#ifndef __ASM_ARCH_IMX_ESDHC_H
  11#define __ASM_ARCH_IMX_ESDHC_H
  12
  13#include <linux/types.h>
  14
  15enum wp_types {
  16        ESDHC_WP_NONE,          /* no WP, neither controller nor gpio */
  17        ESDHC_WP_CONTROLLER,    /* mmc controller internal WP */
  18        ESDHC_WP_GPIO,          /* external gpio pin for WP */
  19};
  20
  21enum cd_types {
  22        ESDHC_CD_NONE,          /* no CD, neither controller nor gpio */
  23        ESDHC_CD_CONTROLLER,    /* mmc controller internal CD */
  24        ESDHC_CD_GPIO,          /* external gpio pin for CD */
  25        ESDHC_CD_PERMANENT,     /* no CD, card permanently wired to host */
  26};
  27
  28/**
  29 * struct esdhc_platform_data - platform data for esdhc on i.MX
  30 *
  31 * ESDHC_WP(CD)_CONTROLLER type is not available on i.MX25/35.
  32 *
  33 * @wp_gpio:    gpio for write_protect
  34 * @cd_gpio:    gpio for card_detect interrupt
  35 * @wp_type:    type of write_protect method (see wp_types enum above)
  36 * @cd_type:    type of card_detect method (see cd_types enum above)
  37 * @support_vsel:  indicate it supports 1.8v switching
  38 */
  39
  40struct esdhc_platform_data {
  41        unsigned int wp_gpio;
  42        unsigned int cd_gpio;
  43        enum wp_types wp_type;
  44        enum cd_types cd_type;
  45        int max_bus_width;
  46        bool support_vsel;
  47        unsigned int delay_line;
  48        unsigned int tuning_step;       /* The delay cell steps in tuning procedure */
  49        unsigned int tuning_start_tap;  /* The start delay cell point in tuning procedure */
  50};
  51#endif /* __ASM_ARCH_IMX_ESDHC_H */
  52