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 #include <linux/mmc/sdio_ids.h>
  17
  18 #ifndef SDIO_VENDOR_ID_TI
  19 #define SDIO_VENDOR_ID_TI               0x0097
  20 #endif
  21
  22 #ifndef SDIO_DEVICE_ID_TI_WL1271
  23 #define SDIO_DEVICE_ID_TI_WL1271        0x4076
  24 #endif
  25
  26 #ifndef SDIO_VENDOR_ID_STE
  27 #define SDIO_VENDOR_ID_STE              0x0020
  28 #endif
  29
  30 #ifndef SDIO_DEVICE_ID_STE_CW1200
  31 #define SDIO_DEVICE_ID_STE_CW1200       0x2280
  32 #endif
  33
  34 #ifndef SDIO_DEVICE_ID_MARVELL_8797_F0
  35 #define SDIO_DEVICE_ID_MARVELL_8797_F0  0x9128
  36 #endif
  37
  38 /*
  39  * This hook just adds a quirk for all sdio devices
  40  */
  41 static void add_quirk_for_sdio_devices(struct mmc_card *card, int data)
  42 {
  43         if (mmc_card_sdio(card))
  44                 card->quirks |= data;
  45 }
  46
  47 static const struct mmc_fixup mmc_fixup_methods[] = {
  48         /* by default sdio devices are considered CLK_GATING broken */
  49         /* good cards will be whitelisted as they are tested */
  50         SDIO_FIXUP(SDIO_ANY_ID, SDIO_ANY_ID,
  51                    add_quirk_for_sdio_devices,
  52                    MMC_QUIRK_BROKEN_CLK_GATING),
  53
  54         SDIO_FIXUP(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1271,
  55                    remove_quirk, MMC_QUIRK_BROKEN_CLK_GATING),
  56
  57         SDIO_FIXUP(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1271,
  58                    add_quirk, MMC_QUIRK_NONSTD_FUNC_IF),
  59
  60         SDIO_FIXUP(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1271,
  61                    add_quirk, MMC_QUIRK_DISABLE_CD),
  62
  63         SDIO_FIXUP(SDIO_VENDOR_ID_STE, SDIO_DEVICE_ID_STE_CW1200,
  64                    add_quirk, MMC_QUIRK_BROKEN_BYTE_MODE_512),
  65
  66         SDIO_FIXUP(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8797_F0,
  67                    add_quirk, MMC_QUIRK_BROKEN_IRQ_POLLING),
  68
  69         END_FIXUP
  70 };
  71
  72 void mmc_fixup_device(struct mmc_card *card, const struct mmc_fixup *table)
  73 {
  74         const struct mmc_fixup *f;
  75         u64 rev = cid_rev_card(card);
  76
  77         /* Non-core specific workarounds. */
  78         if (!table)
  79                 table = mmc_fixup_methods;
  80
  81         for (f = table; f->vendor_fixup; f++) {
  82                 if ((f->manfid == CID_MANFID_ANY ||
  83                      f->manfid == card->cid.manfid) &&
  84                     (f->oemid == CID_OEMID_ANY ||
  85                      f->oemid == card->cid.oemid) &&
  86                     (f->name == CID_NAME_ANY ||
  87                      !strncmp(f->name, card->cid.prod_name,
  88                               sizeof(card->cid.prod_name))) &&
  89                     (f->cis_vendor == card->cis.vendor ||
  90                      f->cis_vendor == (u16) SDIO_ANY_ID) &&
  91                     (f->cis_device == card->cis.device ||
  92                      f->cis_device == (u16) SDIO_ANY_ID) &&
  93                     rev >= f->rev_start && rev <= f->rev_end) {
  94                         dev_dbg(&card->dev, "calling %pf\n", f->vendor_fixup);
  95                         f->vendor_fixup(card, f->data);
  96                 }
  97         }
  98 }
  99 EXPORT_SYMBOL(mmc_fixup_device);