include/linux/platform_data/hsmmc-omap.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 /*
  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
  31 struct omap_hsmmc_dev_attr {
  32         u8 flags;
  33 };
  34
  35 struct mmc_card;
  36
  37 struct 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 };