drivers/mmc/core/quirks.c

   1 /*
   2  *  This file contains work-arounds for many known SD/MMC
   3  *  and SDIO hardware bugs.
   4  *
   5  *  Copyright (c) 2011 Andrei Warkentin <andreiw@motorola.com>
   6  *  Copyright (c) 2011 Pierre Tardy <tardyp@gmail.com>
   7  *  Inspired from pci fixup code:
   8  *  Copyright (c) 1999 Martin Mares <mj@ucw.cz>
   9  *
  10  */
  11
  12 #include <linux/types.h>
  13 #include <linux/kernel.h>
  14 #include <linux/export.h>
  15 #include <linux/mmc/card.h>
  16
  17 #ifndef SDIO_VENDOR_ID_TI
  18 #define SDIO_VENDOR_ID_TI               0x0097
  19 #endif
  20
  21 #ifndef SDIO_DEVICE_ID_TI_WL1271
  22 #define SDIO_DEVICE_ID_TI_WL1271        0x4076
  23 #endif
  24
  25 #ifndef SDIO_VENDOR_ID_STE
  26 #define SDIO_VENDOR_ID_STE              0x0020
  27 #endif
  28
  29 #ifndef SDIO_DEVICE_ID_STE_CW1200
  30 #define SDIO_DEVICE_ID_STE_CW1200       0x2280
  31 #endif
  32
  33 /*
  34  * This hook just adds a quirk for all sdio devices
  35  */
  36 static void add_quirk_for_sdio_devices(struct mmc_card *card, int data)
  37 {
  38         if (mmc_card_sdio(card))
  39                 card->quirks |= data;
  40 }
  41
  42 static const struct mmc_fixup mmc_fixup_methods[] = {
  43         /* by default sdio devices are considered CLK_GATING broken */
  44         /* good cards will be whitelisted as they are tested */
  45         SDIO_FIXUP(SDIO_ANY_ID, SDIO_ANY_ID,
  46                    add_quirk_for_sdio_devices,
  47                    MMC_QUIRK_BROKEN_CLK_GATING),
  48
  49         SDIO_FIXUP(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1271,
  50                    remove_quirk, MMC_QUIRK_BROKEN_CLK_GATING),
  51
  52         SDIO_FIXUP(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1271,
  53                    add_quirk, MMC_QUIRK_NONSTD_FUNC_IF),
  54
  55         SDIO_FIXUP(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1271,
  56                    add_quirk, MMC_QUIRK_DISABLE_CD),
  57
  58         SDIO_FIXUP(SDIO_VENDOR_ID_STE, SDIO_DEVICE_ID_STE_CW1200,
  59                    add_quirk, MMC_QUIRK_BROKEN_BYTE_MODE_512),
  60
  61         END_FIXUP
  62 };
  63
  64 void mmc_fixup_device(struct mmc_card *card, const struct mmc_fixup *table)
  65 {
  66         const struct mmc_fixup *f;
  67         u64 rev = cid_rev_card(card);
  68
  69         /* Non-core specific workarounds. */
  70         if (!table)
  71                 table = mmc_fixup_methods;
  72
  73         for (f = table; f->vendor_fixup; f++) {
  74                 if ((f->manfid == CID_MANFID_ANY ||
  75                      f->manfid == card->cid.manfid) &&
  76                     (f->oemid == CID_OEMID_ANY ||
  77                      f->oemid == card->cid.oemid) &&
  78                     (f->name == CID_NAME_ANY ||
  79                      !strncmp(f->name, card->cid.prod_name,
  80                               sizeof(card->cid.prod_name))) &&
  81                     (f->cis_vendor == card->cis.vendor ||
  82                      f->cis_vendor == (u16) SDIO_ANY_ID) &&
  83                     (f->cis_device == card->cis.device ||
  84                      f->cis_device == (u16) SDIO_ANY_ID) &&
  85                     rev >= f->rev_start && rev <= f->rev_end) {
  86                         dev_dbg(&card->dev, "calling %pF\n", f->vendor_fixup);
  87                         f->vendor_fixup(card, f->data);
  88                 }
  89         }
  90 }
  91 EXPORT_SYMBOL(mmc_fixup_device);