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
17#ifndef SDIO_VENDOR_ID_TI
18#define SDIO_VENDOR_ID_TI		0x0097
19#endif
20
21#ifndef SDIO_DEVICE_ID_TI_WL1271
22#define SDIO_DEVICE_ID_TI_WL1271	0x4076
23#endif
24
25#ifndef SDIO_VENDOR_ID_STE
26#define SDIO_VENDOR_ID_STE		0x0020
27#endif
28
29#ifndef SDIO_DEVICE_ID_STE_CW1200
30#define SDIO_DEVICE_ID_STE_CW1200	0x2280
31#endif
32
33/*
34 * This hook just adds a quirk for all sdio devices
35 */
36static void add_quirk_for_sdio_devices(struct mmc_card *card, int data)
37{
38	if (mmc_card_sdio(card))
39		card->quirks |= data;
40}
41
42static const struct mmc_fixup mmc_fixup_methods[] = {
43	/* by default sdio devices are considered CLK_GATING broken */
44	/* good cards will be whitelisted as they are tested */
45	SDIO_FIXUP(SDIO_ANY_ID, SDIO_ANY_ID,
46		   add_quirk_for_sdio_devices,
47		   MMC_QUIRK_BROKEN_CLK_GATING),
48
49	SDIO_FIXUP(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1271,
50		   remove_quirk, MMC_QUIRK_BROKEN_CLK_GATING),
51
52	SDIO_FIXUP(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1271,
53		   add_quirk, MMC_QUIRK_NONSTD_FUNC_IF),
54
55	SDIO_FIXUP(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1271,
56		   add_quirk, MMC_QUIRK_DISABLE_CD),
57
58	SDIO_FIXUP(SDIO_VENDOR_ID_STE, SDIO_DEVICE_ID_STE_CW1200,
59		   add_quirk, MMC_QUIRK_BROKEN_BYTE_MODE_512),
60
61	END_FIXUP
62};
63
64void mmc_fixup_device(struct mmc_card *card, const struct mmc_fixup *table)
65{
66	const struct mmc_fixup *f;
67	u64 rev = cid_rev_card(card);
68
69	/* Non-core specific workarounds. */
70	if (!table)
71		table = mmc_fixup_methods;
72
73	for (f = table; f->vendor_fixup; f++) {
74		if ((f->manfid == CID_MANFID_ANY ||
75		     f->manfid == card->cid.manfid) &&
76		    (f->oemid == CID_OEMID_ANY ||
77		     f->oemid == card->cid.oemid) &&
78		    (f->name == CID_NAME_ANY ||
79		     !strncmp(f->name, card->cid.prod_name,
80			      sizeof(card->cid.prod_name))) &&
81		    (f->cis_vendor == card->cis.vendor ||
82		     f->cis_vendor == (u16) SDIO_ANY_ID) &&
83		    (f->cis_device == card->cis.device ||
84		     f->cis_device == (u16) SDIO_ANY_ID) &&
85		    rev >= f->rev_start && rev <= f->rev_end) {
86			dev_dbg(&card->dev, "calling %pF\n", f->vendor_fixup);
87			f->vendor_fixup(card, f->data);
88		}
89	}
90}
91EXPORT_SYMBOL(mmc_fixup_device);