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Commit 33e6d74d authored by Ulf Hansson's avatar Ulf Hansson
Browse files

mmc: core: Export API to allow hosts to get the card address 



Some hosts controllers, like Cavium, needs to know whether the card
operates in byte- or block-address mode. Therefore export a new API,
mmc_card_is_blockaddr(), which provides this information.

Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
Signed-off-by: default avatarSteven J. Hill <Steven.Hill@cavium.com>
Acked-by: default avatarDavid Daney <david.daney@cavium.com>
parent f328c76e

drivers/mmc/core/core.c

+6 −0
Original line number Diff line number Diff line
@@ -2560,6 +2560,12 @@ unsigned int mmc_calc_max_discard(struct mmc_card *card) 
}

EXPORT_SYMBOL(mmc_calc_max_discard);



bool mmc_card_is_blockaddr(struct mmc_card *card)

{

	return card ? mmc_card_blockaddr(card) : false;

}

EXPORT_SYMBOL(mmc_card_is_blockaddr);



int mmc_set_blocklen(struct mmc_card *card, unsigned int blocklen)

{

	struct mmc_command cmd = {};

include/linux/mmc/card.h

+2 −0
Original line number Diff line number Diff line
@@ -315,6 +315,8 @@ static inline bool mmc_large_sector(struct mmc_card *card) 
	return card->ext_csd.data_sector_size == 4096;

}



bool mmc_card_is_blockaddr(struct mmc_card *card);



#define mmc_card_mmc(c)		((c)->type == MMC_TYPE_MMC)

#define mmc_card_sd(c)		((c)->type == MMC_TYPE_SD)

#define mmc_card_sdio(c)	((c)->type == MMC_TYPE_SDIO)