LXR linux/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 */
  41static 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
  47static 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
  72void 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}
  99EXPORT_SYMBOL(mmc_fixup_device);
 100