LXR linux/include/linux/platform

   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/*
  12 * struct omap_hsmmc_dev_attr.flags possibilities
  13 *
  14 * OMAP_HSMMC_SUPPORTS_DUAL_VOLT: Some HSMMC controller instances can
  15 *    operate with either 1.8Vdc or 3.0Vdc card voltages; this flag
  16 *    should be set if this is the case.  See for example Section 22.5.3
  17 *    "MMC/SD/SDIO1 Bus Voltage Selection" of the OMAP34xx Multimedia
  18 *    Device Silicon Revision 3.1.x Revision ZR (July 2011) (SWPU223R).
  19 *
  20 * OMAP_HSMMC_BROKEN_MULTIBLOCK_READ: Multiple-block read transfers
  21 *    don't work correctly on some MMC controller instances on some
  22 *    OMAP3 SoCs; this flag should be set if this is the case.  See
  23 *    for example Advisory 2.1.1.128 "MMC: Multiple Block Read
  24 *    Operation Issue" in _OMAP3530/3525/3515/3503 Silicon Errata_
  25 *    Revision F (October 2010) (SPRZ278F).
  26 */
  27#define OMAP_HSMMC_SUPPORTS_DUAL_VOLT           BIT(0)
  28#define OMAP_HSMMC_BROKEN_MULTIBLOCK_READ       BIT(1)
  29#define OMAP_HSMMC_SWAKEUP_MISSING              BIT(2)
  30
  31struct omap_hsmmc_dev_attr {
  32        u8 flags;
  33};
  34
  35struct mmc_card;
  36
  37struct omap_hsmmc_platform_data {
  38        /* back-link to device */
  39        struct device *dev;
  40
  41        /* set if your board has components or wiring that limits the
  42         * maximum frequency on the MMC bus */
  43        unsigned int max_freq;
  44
  45        /* Integrating attributes from the omap_hwmod layer */
  46        u8 controller_flags;
  47
  48        /* Register offset deviation */
  49        u16 reg_offset;
  50
  51        /*
  52         * 4/8 wires and any additional host capabilities
  53         * need to OR'd all capabilities (ref. linux/mmc/host.h)
  54         */
  55        u32 caps;       /* Used for the MMC driver on 2430 and later */
  56        u32 pm_caps;    /* PM capabilities of the mmc */
  57
  58        /* nonremovable e.g. eMMC */
  59        unsigned nonremovable:1;
  60
  61        /* eMMC does not handle power off when not in sleep state */
  62        unsigned no_regulator_off_init:1;
  63
  64        /* we can put the features above into this variable */
  65#define HSMMC_HAS_PBIAS         (1 << 0)
  66#define HSMMC_HAS_UPDATED_RESET (1 << 1)
  67#define HSMMC_HAS_HSPE_SUPPORT  (1 << 2)
  68        unsigned features;
  69
  70        /* string specifying a particular variant of hardware */
  71        char *version;
  72
  73        int gpio_cd;                    /* gpio (card detect) */
  74        int gpio_cod;                   /* gpio (cover detect) */
  75        int gpio_wp;                    /* gpio (write protect) */
  76        /* if we have special card, init it using this callback */
  77        void (*init_card)(struct mmc_card *card);
  78
  79        const char *name;
  80        u32 ocr_mask;
  81};
  82