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kernel/linux-rt-4.4.41/drivers/mmc/core/quirks.c 2.17 KB
5113f6f70   김현기   kernel add
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  /*
   *  This file contains work-arounds for many known SD/MMC
   *  and SDIO hardware bugs.
   *
   *  Copyright (c) 2011 Andrei Warkentin <andreiw@motorola.com>
   *  Copyright (c) 2011 Pierre Tardy <tardyp@gmail.com>
   *  Inspired from pci fixup code:
   *  Copyright (c) 1999 Martin Mares <mj@ucw.cz>
   *
   */
  
  #include <linux/types.h>
  #include <linux/kernel.h>
  #include <linux/export.h>
  #include <linux/mmc/card.h>
  #include <linux/mmc/sdio_ids.h>
  
  #ifndef SDIO_VENDOR_ID_TI
  #define SDIO_VENDOR_ID_TI		0x0097
  #endif
  
  #ifndef SDIO_DEVICE_ID_TI_WL1271
  #define SDIO_DEVICE_ID_TI_WL1271	0x4076
  #endif
  
  #ifndef SDIO_VENDOR_ID_STE
  #define SDIO_VENDOR_ID_STE		0x0020
  #endif
  
  #ifndef SDIO_DEVICE_ID_STE_CW1200
  #define SDIO_DEVICE_ID_STE_CW1200	0x2280
  #endif
  
  #ifndef SDIO_DEVICE_ID_MARVELL_8797_F0
  #define SDIO_DEVICE_ID_MARVELL_8797_F0	0x9128
  #endif
  
  static const struct mmc_fixup mmc_fixup_methods[] = {
  	SDIO_FIXUP(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1271,
  		   add_quirk, MMC_QUIRK_NONSTD_FUNC_IF),
  
  	SDIO_FIXUP(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1271,
  		   add_quirk, MMC_QUIRK_DISABLE_CD),
  
  	SDIO_FIXUP(SDIO_VENDOR_ID_STE, SDIO_DEVICE_ID_STE_CW1200,
  		   add_quirk, MMC_QUIRK_BROKEN_BYTE_MODE_512),
  
  	SDIO_FIXUP(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8797_F0,
  		   add_quirk, MMC_QUIRK_BROKEN_IRQ_POLLING),
  
  	END_FIXUP
  };
  
  void mmc_fixup_device(struct mmc_card *card, const struct mmc_fixup *table)
  {
  	const struct mmc_fixup *f;
  	u64 rev = cid_rev_card(card);
  
  	/* Non-core specific workarounds. */
  	if (!table)
  		table = mmc_fixup_methods;
  
  	for (f = table; f->vendor_fixup; f++) {
  		if ((f->manfid == CID_MANFID_ANY ||
  		     f->manfid == card->cid.manfid) &&
  		    (f->oemid == CID_OEMID_ANY ||
  		     f->oemid == card->cid.oemid) &&
  		    (f->name == CID_NAME_ANY ||
  		     !strncmp(f->name, card->cid.prod_name,
  			      sizeof(card->cid.prod_name))) &&
  		    (f->cis_vendor == card->cis.vendor ||
  		     f->cis_vendor == (u16) SDIO_ANY_ID) &&
  		    (f->cis_device == card->cis.device ||
  		     f->cis_device == (u16) SDIO_ANY_ID) &&
  		    rev >= f->rev_start && rev <= f->rev_end) {
  			dev_dbg(&card->dev, "calling %pf
  ", f->vendor_fixup);
  			f->vendor_fixup(card, f->data);
  		}
  	}
  }
  EXPORT_SYMBOL(mmc_fixup_device);