include/linux/platform_data/hsmmc-omap.h

   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
  28 struct omap_hsmmc_dev_attr {
  29         u8 flags;
  30 };
  31
  32 struct mmc_card;
  33
  34 struct 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         const char *name;
  71         u32 ocr_mask;
  72 };