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>

diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index e5f6bbfa73dde5afef17836c60fa2f5cd56612e8..82c45ddfa2023cd2e6d69218fb3c232a9c14d680 100644 (file)
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -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 = {};

diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
index 85b5f2bc8bb9e3ae4bb3000d171e365f1c9e55e4..aad015e0152b7f1d32f92c500825b723498d1be9 100644 (file)
--- a/include/linux/mmc/card.h
+++ b/include/linux/mmc/card.h
@@ -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)