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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: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Steven J. Hill <Steven.Hill@cavium.com>
Acked-by: David Daney <david.daney@cavium.com>
This commit is contained in:
Ulf Hansson 2017-04-24 13:41:55 -05:00
parent f328c76e56
commit 33e6d74d65
2 changed files with 8 additions and 0 deletions
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6
drivers/mmc/core/core.c
View File

@ -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 = {};

2
include/linux/mmc/card.h
View File

@ -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)