/*
 * Private header for the mmc subsystem
 *
 * Copyright (C) 2016 Linaro Ltd
 *
 * Author: Ulf Hansson <ulf.hansson@linaro.org>
 *
 * License terms: GNU General Public License (GPL) version 2
 */

#ifndef _MMC_CORE_CARD_H
#define _MMC_CORE_CARD_H

#include <linux/mmc/card.h>

#define mmc_card_name(c)        ((c)->cid.prod_name)
#define mmc_card_id(c)          (dev_name(&(c)->dev))
#define mmc_dev_to_card(d)      container_of(d, struct mmc_card, dev)

/* Card states */
#define MMC_STATE_PRESENT       (1<<0)          /* present in sysfs */
#define MMC_STATE_READONLY      (1<<1)          /* card is read-only */
#define MMC_STATE_BLOCKADDR     (1<<2)          /* card uses block-addressing */
#define MMC_CARD_SDXC           (1<<3)          /* card is SDXC */
#define MMC_CARD_REMOVED        (1<<4)          /* card has been removed */
#define MMC_STATE_DOING_BKOPS   (1<<5)          /* card is doing BKOPS */
#define MMC_STATE_SUSPENDED     (1<<6)          /* card is suspended */

#define mmc_card_present(c)     ((c)->state & MMC_STATE_PRESENT)
#define mmc_card_readonly(c)    ((c)->state & MMC_STATE_READONLY)
#define mmc_card_blockaddr(c)   ((c)->state & MMC_STATE_BLOCKADDR)
#define mmc_card_ext_capacity(c) ((c)->state & MMC_CARD_SDXC)
#define mmc_card_removed(c)     ((c) && ((c)->state & MMC_CARD_REMOVED))
#define mmc_card_doing_bkops(c) ((c)->state & MMC_STATE_DOING_BKOPS)
#define mmc_card_suspended(c)   ((c)->state & MMC_STATE_SUSPENDED)

#define mmc_card_set_present(c) ((c)->state |= MMC_STATE_PRESENT)
#define mmc_card_set_readonly(c) ((c)->state |= MMC_STATE_READONLY)
#define mmc_card_set_blockaddr(c) ((c)->state |= MMC_STATE_BLOCKADDR)
#define mmc_card_set_ext_capacity(c) ((c)->state |= MMC_CARD_SDXC)
#define mmc_card_set_removed(c) ((c)->state |= MMC_CARD_REMOVED)
#define mmc_card_set_doing_bkops(c)     ((c)->state |= MMC_STATE_DOING_BKOPS)
#define mmc_card_clr_doing_bkops(c)     ((c)->state &= ~MMC_STATE_DOING_BKOPS)
#define mmc_card_set_suspended(c) ((c)->state |= MMC_STATE_SUSPENDED)
#define mmc_card_clr_suspended(c) ((c)->state &= ~MMC_STATE_SUSPENDED)

/*
 * 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-specific fields. You can use SDIO_ANY_ID here of course */
        u16 cis_vendor, cis_device;

        /* for MMC cards */
        unsigned int ext_csd_rev;

        void (*vendor_fixup)(struct mmc_card *card, int data);
        int data;
};

#define CID_MANFID_ANY (-1u)
#define CID_OEMID_ANY ((unsigned short) -1)
#define CID_NAME_ANY (NULL)

#define EXT_CSD_REV_ANY (-1u)

#define CID_MANFID_SANDISK      0x2
#define CID_MANFID_TOSHIBA      0x11
#define CID_MANFID_MICRON       0x13
#define CID_MANFID_SAMSUNG      0x15
#define CID_MANFID_KINGSTON     0x70
#define CID_MANFID_HYNIX        0x90

#define END_FIXUP { NULL }

#define _FIXUP_EXT(_name, _manfid, _oemid, _rev_start, _rev_end,        \
                   _cis_vendor, _cis_device,                            \
                   _fixup, _data, _ext_csd_rev)                         \
        {                                               \
                .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),                        \
                .ext_csd_rev = (_ext_csd_rev),          \
        }

#define MMC_FIXUP_REV(_name, _manfid, _oemid, _rev_start, _rev_end,     \
                      _fixup, _data, _ext_csd_rev)                      \
        _FIXUP_EXT(_name, _manfid,                                      \
                   _oemid, _rev_start, _rev_end,                        \
                   SDIO_ANY_ID, SDIO_ANY_ID,                            \
                   _fixup, _data, _ext_csd_rev)                         \

#define MMC_FIXUP(_name, _manfid, _oemid, _fixup, _data) \
        MMC_FIXUP_REV(_name, _manfid, _oemid, 0, -1ull, _fixup, _data,  \
                      EXT_CSD_REV_ANY)

#define MMC_FIXUP_EXT_CSD_REV(_name, _manfid, _oemid, _fixup, _data,    \
                              _ext_csd_rev)                             \
        MMC_FIXUP_REV(_name, _manfid, _oemid, 0, -1ull, _fixup, _data,  \
                      _ext_csd_rev)

#define SDIO_FIXUP(_vendor, _device, _fixup, _data)                     \
        _FIXUP_EXT(CID_NAME_ANY, CID_MANFID_ANY,                        \
                    CID_OEMID_ANY, 0, -1ull,                            \
                   _vendor, _device,                                    \
                   _fixup, _data, EXT_CSD_REV_ANY)                      \

#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)

/*
 * Unconditionally quirk add/remove.
 */
static inline void __maybe_unused add_quirk(struct mmc_card *card, int data)
{
        card->quirks |= data;
}

static inline void __maybe_unused remove_quirk(struct mmc_card *card, int data)
{
        card->quirks &= ~data;
}

/*
 * Quirk add/remove for MMC products.
 */
static inline void __maybe_unused add_quirk_mmc(struct mmc_card *card, int data)
{
        if (mmc_card_mmc(card))
                card->quirks |= data;
}

static inline void __maybe_unused remove_quirk_mmc(struct mmc_card *card,
                                                   int data)
{
        if (mmc_card_mmc(card))
                card->quirks &= ~data;
}

/*
 * Quirk add/remove for SD products.
 */
static inline void __maybe_unused add_quirk_sd(struct mmc_card *card, int data)
{
        if (mmc_card_sd(card))
                card->quirks |= data;
}

static inline void __maybe_unused remove_quirk_sd(struct mmc_card *card,
                                                   int data)
{
        if (mmc_card_sd(card))
                card->quirks &= ~data;
}

static inline int mmc_card_lenient_fn0(const struct mmc_card *c)
{
        return c->quirks & MMC_QUIRK_LENIENT_FN0;
}

static inline int mmc_blksz_for_byte_mode(const struct mmc_card *c)
{
        return c->quirks & MMC_QUIRK_BLKSZ_FOR_BYTE_MODE;
}

static inline int mmc_card_disable_cd(const struct mmc_card *c)
{
        return c->quirks & MMC_QUIRK_DISABLE_CD;
}

static inline int mmc_card_nonstd_func_interface(const struct mmc_card *c)
{
        return c->quirks & MMC_QUIRK_NONSTD_FUNC_IF;
}

static inline int mmc_card_broken_byte_mode_512(const struct mmc_card *c)
{
        return c->quirks & MMC_QUIRK_BROKEN_BYTE_MODE_512;
}

static inline int mmc_card_long_read_time(const struct mmc_card *c)
{
        return c->quirks & MMC_QUIRK_LONG_READ_TIME;
}

static inline int mmc_card_broken_irq_polling(const struct mmc_card *c)
{
        return c->quirks & MMC_QUIRK_BROKEN_IRQ_POLLING;
}

static inline int mmc_card_broken_hpi(const struct mmc_card *c)
{
        return c->quirks & MMC_QUIRK_BROKEN_HPI;
}

#endif