include/asm-arm/arch-omap/mmc.h

   1 /*
   2  * MMC definitions for OMAP2
   3  *
   4  * Copyright (C) 2006 Nokia Corporation
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  */
  10
  11 #ifndef __OMAP2_MMC_H
  12 #define __OMAP2_MMC_H
  13
  14 #include <linux/types.h>
  15 #include <linux/device.h>
  16 #include <linux/mmc/host.h>
  17
  18 #define OMAP_MMC_MAX_SLOTS      2
  19
  20 struct omap_mmc_platform_data {
  21         unsigned enabled:1;
  22         /* number of slots on board */
  23         unsigned nr_slots:2;
  24         /* nomux means "standard" muxing is wrong on this board, and that
  25          * board-specific code handled it before common init logic.
  26          */
  27         unsigned nomux:1;
  28         /* 4 wire signaling is optional, and is only used for SD/SDIO and
  29          * MMCv4 */
  30         unsigned wire4:1;
  31         /* set if your board has components or wiring that limits the
  32          * maximum frequency on the MMC bus */
  33         unsigned int max_freq;
  34
  35         /* switch the bus to a new slot */
  36         int (* switch_slot)(struct device *dev, int slot);
  37         /* initialize board-specific MMC functionality, can be NULL if
  38          * not supported */
  39         int (* init)(struct device *dev);
  40         void (* cleanup)(struct device *dev);
  41
  42         struct omap_mmc_slot_data {
  43                 int (* set_bus_mode)(struct device *dev, int slot, int bus_mode);
  44                 int (* set_power)(struct device *dev, int slot, int power_on, int vdd);
  45                 int (* get_ro)(struct device *dev, int slot);
  46
  47                 /* return MMC cover switch state, can be NULL if not supported.
  48                  *
  49                  * possible return values:
  50                  *   0 - open
  51                  *   1 - closed
  52                  */
  53                 int (* get_cover_state)(struct device *dev, int slot);
  54
  55                 const char *name;
  56                 u32 ocr_mask;
  57         } slots[OMAP_MMC_MAX_SLOTS];
  58 };
  59
  60 extern void omap_set_mmc_info(int host, const struct omap_mmc_platform_data *info);
  61
  62 /* called from board-specific card detection service routine */
  63 extern void omap_mmc_notify_card_detect(struct device *dev, int slot, int detected);
  64 extern void omap_mmc_notify_cover_event(struct device *dev, int slot, int is_closed);
  65
  66 #endif