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mmc: quirks: Extends card quirks with MMC/SD quirks matching the CID.

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The current mechanism is SDIO-only. This allows us to create
function-specific quirks, without creating messy Kconfig dependencies,
or polluting core/ with function-specific code.

Signed-off-by: Andrei Warkentin <andreiw@motorola.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
This commit is contained in:
Andrei Warkentin
2011-04-11 17:02:15 -05:00
committed by Chris Ball
parent f317dfeb86
commit 32780cd135
4 changed files with 133 additions and 55 deletions
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91
include/linux/mmc/card.h
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@@ -11,6 +11,7 @@
#define LINUX_MMC_CARD_H
#include <linux/mmc/core.h>
#include <linux/mod_devicetable.h>
struct mmc_cid {
unsigned int manfid;
@@ -157,7 +158,92 @@ struct mmc_card {
struct dentry *debugfs_root;
};
void mmc_fixup_device(struct mmc_card *dev);
/*
* The world is not perfect and supplies us with broken mmc/sdio devices.
* For at least some of these bugs we need a work-around.
*/
struct mmc_fixup {
/* CID-specific fields. */
const char *name;
/* Valid revision range */
u64 rev_start, rev_end;
unsigned int manfid;
unsigned short oemid;
/* SDIO-specfic fields. You can use SDIO_ANY_ID here of course */
u16 cis_vendor, cis_device;
void (*vendor_fixup)(struct mmc_card *card, int data);
int data;
};
#define CID_MANFID_ANY (-1ul)
#define CID_OEMID_ANY ((unsigned short) -1)
#define CID_NAME_ANY (NULL)
#define END_FIXUP { 0 }
#define _FIXUP_EXT(_name, _manfid, _oemid, _rev_start, _rev_end, \
_cis_vendor, _cis_device, \
_fixup, _data) \
{ \
.name = (_name), \
.manfid = (_manfid), \
.oemid = (_oemid), \
.rev_start = (_rev_start), \
.rev_end = (_rev_end), \
.cis_vendor = (_cis_vendor), \
.cis_device = (_cis_device), \
.vendor_fixup = (_fixup), \
.data = (_data), \
}
#define MMC_FIXUP_REV(_name, _manfid, _oemid, _rev_start, _rev_end, \
_fixup, _data) \
_FIXUP_EXT(_name, _manfid, \
_oemid, _rev_start, _rev_end, \
SDIO_ANY_ID, SDIO_ANY_ID, \
_fixup, _data) \
#define MMC_FIXUP(_name, _manfid, _oemid, _fixup, _data) \
MMC_FIXUP_REV(_name, _manfid, _oemid, 0, -1ull, _fixup, _data)
#define SDIO_FIXUP(_vendor, _device, _fixup, _data) \
_FIXUP_EXT(CID_NAME_ANY, CID_MANFID_ANY, \
CID_OEMID_ANY, 0, -1ull, \
_vendor, _device, \
_fixup, _data) \
#define cid_rev(hwrev, fwrev, year, month) \
(((u64) hwrev) << 40 | \
((u64) fwrev) << 32 | \
((u64) year) << 16 | \
((u64) month))
#define cid_rev_card(card) \
cid_rev(card->cid.hwrev, \
card->cid.fwrev, \
card->cid.year, \
card->cid.month)
/*
* This hook just adds a quirk unconditionally.
*/
static inline void __maybe_unused add_quirk(struct mmc_card *card, int data)
{
card->quirks |= data;
}
/*
* This hook just removes a quirk unconditionally.
*/
static inline void __maybe_unused remove_quirk(struct mmc_card *card, int data)
{
card->quirks &= ~data;
}
#define mmc_card_mmc(c) ((c)->type == MMC_TYPE_MMC)
#define mmc_card_sd(c) ((c)->type == MMC_TYPE_SD)
@@ -218,4 +304,7 @@ struct mmc_driver {
extern int mmc_register_driver(struct mmc_driver *);
extern void mmc_unregister_driver(struct mmc_driver *);
extern void mmc_fixup_device(struct mmc_card *card,
const struct mmc_fixup *table);
#endif