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 /*
  26  * This hook just adds a quirk for all sdio devices
  27  */
  28 static void add_quirk_for_sdio_devices(struct mmc_card *card, int data)
  29 {
  30         if (mmc_card_sdio(card))
  31                 card->quirks |= data;
  32 }
  33
  34 static const struct mmc_fixup mmc_fixup_methods[] = {
  35         /* by default sdio devices are considered CLK_GATING broken */
  36         /* good cards will be whitelisted as they are tested */
  37         SDIO_FIXUP(SDIO_ANY_ID, SDIO_ANY_ID,
  38                    add_quirk_for_sdio_devices,
  39                    MMC_QUIRK_BROKEN_CLK_GATING),
  40
  41         SDIO_FIXUP(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1271,
  42                    remove_quirk, MMC_QUIRK_BROKEN_CLK_GATING),
  43
  44         SDIO_FIXUP(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1271,
  45                    add_quirk, MMC_QUIRK_NONSTD_FUNC_IF),
  46
  47         SDIO_FIXUP(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1271,
  48                    add_quirk, MMC_QUIRK_DISABLE_CD),
  49
  50         END_FIXUP
  51 };
  52
  53 void mmc_fixup_device(struct mmc_card *card, const struct mmc_fixup *table)
  54 {
  55         const struct mmc_fixup *f;
  56         u64 rev = cid_rev_card(card);
  57
  58         /* Non-core specific workarounds. */
  59         if (!table)
  60                 table = mmc_fixup_methods;
  61
  62         for (f = table; f->vendor_fixup; f++) {
  63                 if ((f->manfid == CID_MANFID_ANY ||
  64                      f->manfid == card->cid.manfid) &&
  65                     (f->oemid == CID_OEMID_ANY ||
  66                      f->oemid == card->cid.oemid) &&
  67                     (f->name == CID_NAME_ANY ||
  68                      !strncmp(f->name, card->cid.prod_name,
  69                               sizeof(card->cid.prod_name))) &&
  70                     (f->cis_vendor == card->cis.vendor ||
  71                      f->cis_vendor == (u16) SDIO_ANY_ID) &&
  72                     (f->cis_device == card->cis.device ||
  73                      f->cis_device == (u16) SDIO_ANY_ID) &&
  74                     rev >= f->rev_start && rev <= f->rev_end) {
  75                         dev_dbg(&card->dev, "calling %pF\n", f->vendor_fixup);
  76                         f->vendor_fixup(card, f->data);
  77                 }
  78         }
  79 }
  80 EXPORT_SYMBOL(mmc_fixup_device);