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[PATCH] sd: SCR register

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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>
This commit is contained in:
Pierre Ossman 2005-09-06 15:18:53 -07:00 • committed by Linus Torvalds
parent a00fc09029
commit b57c43ad81
2 changed files with 142 additions and 10 deletions
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9
include/linux/mmc/card.h
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@ -33,6 +33,13 @@ struct mmc_csd {
unsigned int capacity;
};
struct sd_scr {
unsigned char sda_vsn;
unsigned char bus_widths;
#define SD_SCR_BUS_WIDTH_1 (1<<0)
#define SD_SCR_BUS_WIDTH_4 (1<<2)
};
struct mmc_host;
/*
@ -51,8 +58,10 @@ struct mmc_card {
#define MMC_STATE_READONLY (1<<4) /* card is read-only */
u32 raw_cid[4]; /* raw card CID */
u32 raw_csd[4]; /* raw card CSD */
u32 raw_scr[2]; /* raw card SCR */
struct mmc_cid cid; /* card identification */
struct mmc_csd csd; /* card specific */
struct sd_scr scr; /* extra SD information */
};
#define mmc_card_present(c) ((c)->state & MMC_STATE_PRESENT)