From 3fb7fb4a01d09f81d1daaf65e52d929734bd691f Mon Sep 17 00:00:00 2001 From: Bing Zhao Date: Fri, 5 Mar 2010 13:43:25 -0800 Subject: sdio: add quirk to clamp byte mode transfer Some SDIO cards expect byte transfers not to exceed the configured block transfer size. Add a quirk to that effect. Patches to make use of this quirk will be sent separately. Signed-off-by: Bing Zhao Signed-off-by: Nicolas Pitre Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mmc/card.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux/mmc') diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h index 2ee22e8af110..d02d2c6e0cfe 100644 --- a/include/linux/mmc/card.h +++ b/include/linux/mmc/card.h @@ -99,6 +99,8 @@ struct mmc_card { #define MMC_STATE_BLOCKADDR (1<<3) /* card uses block-addressing */ unsigned int quirks; /* card quirks */ #define MMC_QUIRK_LENIENT_FN0 (1<<0) /* allow SDIO FN0 writes outside of the VS CCCR range */ +#define MMC_QUIRK_BLKSZ_FOR_BYTE_MODE (1<<1) /* use func->cur_blksize */ + /* for byte mode */ u32 raw_cid[4]; /* raw card CID */ u32 raw_csd[4]; /* raw card CSD */ @@ -139,6 +141,11 @@ 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; +} + #define mmc_card_name(c) ((c)->cid.prod_name) #define mmc_card_id(c) (dev_name(&(c)->dev)) -- cgit v1.2.2