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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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b57c43ad81
Read the SD specific SCR register from the card. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx> Cc: Russell King <rmk@arm.linux.org.uk> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
108 lines
3.1 KiB
C
108 lines
3.1 KiB
C
/*
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* linux/include/linux/mmc/card.h
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* Card driver specific definitions.
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*/
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#ifndef LINUX_MMC_CARD_H
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#define LINUX_MMC_CARD_H
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#include <linux/mmc/mmc.h>
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struct mmc_cid {
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unsigned int manfid;
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char prod_name[8];
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unsigned int serial;
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unsigned short oemid;
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unsigned short year;
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unsigned char hwrev;
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unsigned char fwrev;
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unsigned char month;
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};
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struct mmc_csd {
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unsigned char mmca_vsn;
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unsigned short cmdclass;
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unsigned short tacc_clks;
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unsigned int tacc_ns;
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unsigned int max_dtr;
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unsigned int read_blkbits;
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unsigned int capacity;
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};
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struct sd_scr {
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unsigned char sda_vsn;
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unsigned char bus_widths;
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#define SD_SCR_BUS_WIDTH_1 (1<<0)
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#define SD_SCR_BUS_WIDTH_4 (1<<2)
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};
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struct mmc_host;
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/*
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* MMC device
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*/
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struct mmc_card {
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struct list_head node; /* node in hosts devices list */
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struct mmc_host *host; /* the host this device belongs to */
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struct device dev; /* the device */
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unsigned int rca; /* relative card address of device */
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unsigned int state; /* (our) card state */
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#define MMC_STATE_PRESENT (1<<0) /* present in sysfs */
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#define MMC_STATE_DEAD (1<<1) /* device no longer in stack */
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#define MMC_STATE_BAD (1<<2) /* unrecognised device */
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#define MMC_STATE_SDCARD (1<<3) /* is an SD card */
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#define MMC_STATE_READONLY (1<<4) /* card is read-only */
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u32 raw_cid[4]; /* raw card CID */
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u32 raw_csd[4]; /* raw card CSD */
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u32 raw_scr[2]; /* raw card SCR */
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struct mmc_cid cid; /* card identification */
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struct mmc_csd csd; /* card specific */
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struct sd_scr scr; /* extra SD information */
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};
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#define mmc_card_present(c) ((c)->state & MMC_STATE_PRESENT)
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#define mmc_card_dead(c) ((c)->state & MMC_STATE_DEAD)
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#define mmc_card_bad(c) ((c)->state & MMC_STATE_BAD)
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#define mmc_card_sd(c) ((c)->state & MMC_STATE_SDCARD)
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#define mmc_card_readonly(c) ((c)->state & MMC_STATE_READONLY)
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#define mmc_card_set_present(c) ((c)->state |= MMC_STATE_PRESENT)
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#define mmc_card_set_dead(c) ((c)->state |= MMC_STATE_DEAD)
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#define mmc_card_set_bad(c) ((c)->state |= MMC_STATE_BAD)
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#define mmc_card_set_sd(c) ((c)->state |= MMC_STATE_SDCARD)
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#define mmc_card_set_readonly(c) ((c)->state |= MMC_STATE_READONLY)
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#define mmc_card_name(c) ((c)->cid.prod_name)
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#define mmc_card_id(c) ((c)->dev.bus_id)
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#define mmc_list_to_card(l) container_of(l, struct mmc_card, node)
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#define mmc_get_drvdata(c) dev_get_drvdata(&(c)->dev)
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#define mmc_set_drvdata(c,d) dev_set_drvdata(&(c)->dev, d)
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/*
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* MMC device driver (e.g., Flash card, I/O card...)
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*/
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struct mmc_driver {
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struct device_driver drv;
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int (*probe)(struct mmc_card *);
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void (*remove)(struct mmc_card *);
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int (*suspend)(struct mmc_card *, pm_message_t);
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int (*resume)(struct mmc_card *);
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};
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extern int mmc_register_driver(struct mmc_driver *);
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extern void mmc_unregister_driver(struct mmc_driver *);
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static inline int mmc_card_claim_host(struct mmc_card *card)
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{
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return __mmc_claim_host(card->host, card);
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}
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#define mmc_card_release_host(c) mmc_release_host((c)->host)
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#endif
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