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ebc5a1bf4f
This patch adds a quirk to limit clock rate which can be used to reduce the SDIO clock rate for some chips with broken UHS. Signed-off-by: Harish Jenny K N <harish_kandiga@mentor.com> Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
230 lines
6.4 KiB
C
230 lines
6.4 KiB
C
/*
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* Private header for the mmc subsystem
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*
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* Copyright (C) 2016 Linaro Ltd
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*
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* Author: Ulf Hansson <ulf.hansson@linaro.org>
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*
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* License terms: GNU General Public License (GPL) version 2
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*/
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#ifndef _MMC_CORE_CARD_H
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#define _MMC_CORE_CARD_H
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#include <linux/mmc/card.h>
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#define mmc_card_name(c) ((c)->cid.prod_name)
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#define mmc_card_id(c) (dev_name(&(c)->dev))
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#define mmc_dev_to_card(d) container_of(d, struct mmc_card, dev)
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/* Card states */
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#define MMC_STATE_PRESENT (1<<0) /* present in sysfs */
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#define MMC_STATE_READONLY (1<<1) /* card is read-only */
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#define MMC_STATE_BLOCKADDR (1<<2) /* card uses block-addressing */
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#define MMC_CARD_SDXC (1<<3) /* card is SDXC */
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#define MMC_CARD_REMOVED (1<<4) /* card has been removed */
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#define MMC_STATE_DOING_BKOPS (1<<5) /* card is doing BKOPS */
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#define MMC_STATE_SUSPENDED (1<<6) /* card is suspended */
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#define mmc_card_present(c) ((c)->state & MMC_STATE_PRESENT)
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#define mmc_card_readonly(c) ((c)->state & MMC_STATE_READONLY)
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#define mmc_card_blockaddr(c) ((c)->state & MMC_STATE_BLOCKADDR)
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#define mmc_card_ext_capacity(c) ((c)->state & MMC_CARD_SDXC)
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#define mmc_card_removed(c) ((c) && ((c)->state & MMC_CARD_REMOVED))
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#define mmc_card_doing_bkops(c) ((c)->state & MMC_STATE_DOING_BKOPS)
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#define mmc_card_suspended(c) ((c)->state & MMC_STATE_SUSPENDED)
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#define mmc_card_set_present(c) ((c)->state |= MMC_STATE_PRESENT)
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#define mmc_card_set_readonly(c) ((c)->state |= MMC_STATE_READONLY)
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#define mmc_card_set_blockaddr(c) ((c)->state |= MMC_STATE_BLOCKADDR)
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#define mmc_card_set_ext_capacity(c) ((c)->state |= MMC_CARD_SDXC)
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#define mmc_card_set_removed(c) ((c)->state |= MMC_CARD_REMOVED)
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#define mmc_card_set_doing_bkops(c) ((c)->state |= MMC_STATE_DOING_BKOPS)
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#define mmc_card_clr_doing_bkops(c) ((c)->state &= ~MMC_STATE_DOING_BKOPS)
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#define mmc_card_set_suspended(c) ((c)->state |= MMC_STATE_SUSPENDED)
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#define mmc_card_clr_suspended(c) ((c)->state &= ~MMC_STATE_SUSPENDED)
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/*
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* The world is not perfect and supplies us with broken mmc/sdio devices.
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* For at least some of these bugs we need a work-around.
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*/
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struct mmc_fixup {
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/* CID-specific fields. */
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const char *name;
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/* Valid revision range */
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u64 rev_start, rev_end;
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unsigned int manfid;
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unsigned short oemid;
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/* SDIO-specific fields. You can use SDIO_ANY_ID here of course */
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u16 cis_vendor, cis_device;
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/* for MMC cards */
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unsigned int ext_csd_rev;
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void (*vendor_fixup)(struct mmc_card *card, int data);
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int data;
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};
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#define CID_MANFID_ANY (-1u)
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#define CID_OEMID_ANY ((unsigned short) -1)
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#define CID_NAME_ANY (NULL)
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#define EXT_CSD_REV_ANY (-1u)
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#define CID_MANFID_SANDISK 0x2
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#define CID_MANFID_ATP 0x9
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#define CID_MANFID_TOSHIBA 0x11
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#define CID_MANFID_MICRON 0x13
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#define CID_MANFID_SAMSUNG 0x15
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#define CID_MANFID_APACER 0x27
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#define CID_MANFID_KINGSTON 0x70
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#define CID_MANFID_HYNIX 0x90
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#define CID_MANFID_NUMONYX 0xFE
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#define END_FIXUP { NULL }
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#define _FIXUP_EXT(_name, _manfid, _oemid, _rev_start, _rev_end, \
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_cis_vendor, _cis_device, \
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_fixup, _data, _ext_csd_rev) \
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{ \
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.name = (_name), \
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.manfid = (_manfid), \
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.oemid = (_oemid), \
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.rev_start = (_rev_start), \
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.rev_end = (_rev_end), \
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.cis_vendor = (_cis_vendor), \
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.cis_device = (_cis_device), \
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.vendor_fixup = (_fixup), \
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.data = (_data), \
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.ext_csd_rev = (_ext_csd_rev), \
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}
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#define MMC_FIXUP_REV(_name, _manfid, _oemid, _rev_start, _rev_end, \
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_fixup, _data, _ext_csd_rev) \
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_FIXUP_EXT(_name, _manfid, \
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_oemid, _rev_start, _rev_end, \
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SDIO_ANY_ID, SDIO_ANY_ID, \
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_fixup, _data, _ext_csd_rev) \
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#define MMC_FIXUP(_name, _manfid, _oemid, _fixup, _data) \
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MMC_FIXUP_REV(_name, _manfid, _oemid, 0, -1ull, _fixup, _data, \
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EXT_CSD_REV_ANY)
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#define MMC_FIXUP_EXT_CSD_REV(_name, _manfid, _oemid, _fixup, _data, \
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_ext_csd_rev) \
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MMC_FIXUP_REV(_name, _manfid, _oemid, 0, -1ull, _fixup, _data, \
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_ext_csd_rev)
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#define SDIO_FIXUP(_vendor, _device, _fixup, _data) \
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_FIXUP_EXT(CID_NAME_ANY, CID_MANFID_ANY, \
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CID_OEMID_ANY, 0, -1ull, \
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_vendor, _device, \
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_fixup, _data, EXT_CSD_REV_ANY) \
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#define cid_rev(hwrev, fwrev, year, month) \
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(((u64) hwrev) << 40 | \
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((u64) fwrev) << 32 | \
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((u64) year) << 16 | \
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((u64) month))
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#define cid_rev_card(card) \
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cid_rev(card->cid.hwrev, \
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card->cid.fwrev, \
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card->cid.year, \
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card->cid.month)
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/*
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* Unconditionally quirk add/remove.
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*/
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static inline void __maybe_unused add_quirk(struct mmc_card *card, int data)
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{
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card->quirks |= data;
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}
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static inline void __maybe_unused remove_quirk(struct mmc_card *card, int data)
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{
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card->quirks &= ~data;
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}
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static inline void __maybe_unused add_limit_rate_quirk(struct mmc_card *card,
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int data)
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{
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card->quirk_max_rate = data;
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}
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/*
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* Quirk add/remove for MMC products.
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*/
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static inline void __maybe_unused add_quirk_mmc(struct mmc_card *card, int data)
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{
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if (mmc_card_mmc(card))
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card->quirks |= data;
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}
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static inline void __maybe_unused remove_quirk_mmc(struct mmc_card *card,
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int data)
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{
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if (mmc_card_mmc(card))
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card->quirks &= ~data;
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}
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/*
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* Quirk add/remove for SD products.
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*/
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static inline void __maybe_unused add_quirk_sd(struct mmc_card *card, int data)
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{
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if (mmc_card_sd(card))
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card->quirks |= data;
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}
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static inline void __maybe_unused remove_quirk_sd(struct mmc_card *card,
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int data)
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{
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if (mmc_card_sd(card))
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card->quirks &= ~data;
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}
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static inline int mmc_card_lenient_fn0(const struct mmc_card *c)
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{
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return c->quirks & MMC_QUIRK_LENIENT_FN0;
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}
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static inline int mmc_blksz_for_byte_mode(const struct mmc_card *c)
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{
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return c->quirks & MMC_QUIRK_BLKSZ_FOR_BYTE_MODE;
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}
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static inline int mmc_card_disable_cd(const struct mmc_card *c)
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{
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return c->quirks & MMC_QUIRK_DISABLE_CD;
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}
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static inline int mmc_card_nonstd_func_interface(const struct mmc_card *c)
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{
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return c->quirks & MMC_QUIRK_NONSTD_FUNC_IF;
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}
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static inline int mmc_card_broken_byte_mode_512(const struct mmc_card *c)
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{
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return c->quirks & MMC_QUIRK_BROKEN_BYTE_MODE_512;
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}
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static inline int mmc_card_long_read_time(const struct mmc_card *c)
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{
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return c->quirks & MMC_QUIRK_LONG_READ_TIME;
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}
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static inline int mmc_card_broken_irq_polling(const struct mmc_card *c)
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{
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return c->quirks & MMC_QUIRK_BROKEN_IRQ_POLLING;
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}
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static inline int mmc_card_broken_hpi(const struct mmc_card *c)
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{
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return c->quirks & MMC_QUIRK_BROKEN_HPI;
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}
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#endif
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