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/*
* This file contains work-arounds for many known sdio hardware
* bugs.
*
* 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/mmc/card.h>
#include <linux/mod_devicetable.h>
/*
* The world is not perfect and supplies us with broken mmc/sdio devices.
* For at least a part of these bugs we need a work-around
*/
struct mmc_fixup {
u16 vendor, device; /* You can use SDIO_ANY_ID here of course */
void (*vendor_fixup)(struct mmc_card *card, int data);
int data;
};
/*
* This hook just adds a quirk unconditionnally
*/
static void __maybe_unused add_quirk(struct mmc_card *card, int data)
{
card->quirks |= data;
}
/*
* This hook just removes a quirk unconditionnally
*/
static void __maybe_unused remove_quirk(struct mmc_card *card, int data)
{
card->quirks &= ~data;
}
static const struct mmc_fixup mmc_fixup_methods[] = {
{ 0 }
};
void mmc_fixup_device(struct mmc_card *card)
{
const struct mmc_fixup *f;
for (f = mmc_fixup_methods; f->vendor_fixup; f++) {
if ((f->vendor == card->cis.vendor
|| f->vendor == (u16) SDIO_ANY_ID) &&
(f->device == card->cis.device
|| f->device == (u16) SDIO_ANY_ID)) {
dev_dbg(&card->dev, "calling %pF\n", f->vendor_fixup);
f->vendor_fixup(card, f->data);
}
}
}
EXPORT_SYMBOL(mmc_fixup_device);
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