mmc: recognize CSD structure

The eMMC spec 4.4 and 4.3 + additional feature chips has CSD structure
version 3 and version 3 have to check the CSD_STRUCTURE byte in the
EXT_CSD register.

Also fix EXT_CSD revision message.

[akpm@linux-foundation.org: fix comment, per Chris Ball]
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Adrian Hunter <adrian.hunter@nokia.com>
Cc: Chris Ball <cjb@laptop.org>
Cc: <linux-mmc@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
index d02d2c6e0cfe..c83c7a7303fd 100644
--- a/include/linux/mmc/card.h
+++ b/include/linux/mmc/card.h
@@ -24,6 +24,7 @@ struct mmc_cid {
 };
 
 struct mmc_csd {
+        unsigned char           structure;
         unsigned char           mmca_vsn;
         unsigned short          cmdclass;
         unsigned short          tacc_clks;
diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h
index 8a49cbf0376d..52ce98866287 100644
--- a/include/linux/mmc/mmc.h
+++ b/include/linux/mmc/mmc.h
@@ -254,6 +254,7 @@ struct _mmc_csd {
 #define EXT_CSD_BUS_WIDTH       183     /* R/W */
 #define EXT_CSD_HS_TIMING       185     /* R/W */
 #define EXT_CSD_CARD_TYPE       196     /* RO */
+#define EXT_CSD_STRUCTURE       194     /* RO */
 #define EXT_CSD_REV             192     /* RO */
 #define EXT_CSD_SEC_CNT         212     /* RO, 4 bytes */
 #define EXT_CSD_S_A_TIMEOUT     217