62 lines
1.4 KiB
C
62 lines
1.4 KiB
C
![]() |
/*
|
||
|
* 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);
|