LXR linux/include/linux/platform

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 * MMC definitions for OMAP2
   4 *
   5 * Copyright (C) 2006 Nokia Corporation
   6 */
   7
   8/*
   9 * struct omap_hsmmc_dev_attr.flags possibilities
  10 *
  11 * OMAP_HSMMC_SUPPORTS_DUAL_VOLT: Some HSMMC controller instances can
  12 *    operate with either 1.8Vdc or 3.0Vdc card voltages; this flag
  13 *    should be set if this is the case.  See for example Section 22.5.3
  14 *    "MMC/SD/SDIO1 Bus Voltage Selection" of the OMAP34xx Multimedia
  15 *    Device Silicon Revision 3.1.x Revision ZR (July 2011) (SWPU223R).
  16 *
  17 * OMAP_HSMMC_BROKEN_MULTIBLOCK_READ: Multiple-block read transfers
  18 *    don't work correctly on some MMC controller instances on some
  19 *    OMAP3 SoCs; this flag should be set if this is the case.  See
  20 *    for example Advisory 2.1.1.128 "MMC: Multiple Block Read
  21 *    Operation Issue" in _OMAP3530/3525/3515/3503 Silicon Errata_
  22 *    Revision F (October 2010) (SPRZ278F).
  23 */
  24#define OMAP_HSMMC_SUPPORTS_DUAL_VOLT           BIT(0)
  25#define OMAP_HSMMC_BROKEN_MULTIBLOCK_READ       BIT(1)
  26#define OMAP_HSMMC_SWAKEUP_MISSING              BIT(2)
  27
  28struct omap_hsmmc_dev_attr {
  29        u8 flags;
  30};
  31
  32struct mmc_card;
  33
  34struct omap_hsmmc_platform_data {
  35        /* back-link to device */
  36        struct device *dev;
  37
  38        /* set if your board has components or wiring that limits the
  39         * maximum frequency on the MMC bus */
  40        unsigned int max_freq;
  41
  42        /* Integrating attributes from the omap_hwmod layer */
  43        u8 controller_flags;
  44
  45        /* Register offset deviation */
  46        u16 reg_offset;
  47
  48        /*
  49         * 4/8 wires and any additional host capabilities
  50         * need to OR'd all capabilities (ref. linux/mmc/host.h)
  51         */
  52        u32 caps;       /* Used for the MMC driver on 2430 and later */
  53        u32 pm_caps;    /* PM capabilities of the mmc */
  54
  55        /* nonremovable e.g. eMMC */
  56        unsigned nonremovable:1;
  57
  58        /* eMMC does not handle power off when not in sleep state */
  59        unsigned no_regulator_off_init:1;
  60
  61        /* we can put the features above into this variable */
  62#define HSMMC_HAS_PBIAS         (1 << 0)
  63#define HSMMC_HAS_UPDATED_RESET (1 << 1)
  64#define HSMMC_HAS_HSPE_SUPPORT  (1 << 2)
  65        unsigned features;
  66
  67        /* string specifying a particular variant of hardware */
  68        char *version;
  69
  70        /* if we have special card, init it using this callback */
  71        void (*init_card)(struct mmc_card *card);
  72
  73        const char *name;
  74        u32 ocr_mask;
  75};
  76