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authorSeungwon Jeon <tgih.jun@samsung.com>2011-10-14 09:03:21 +0400
committerChris Ball <cjb@laptop.org>2011-10-27 00:32:28 +0400
commit881d1c25f765938a95def5afe39486ce39f9fc96 (patch)
tree694d5ea1b3fba2c28cc110123f2ca50b4408f309 /include/linux/mmc/mmc.h
parent71fe3eb0d006861bdae57e93975b6ae3d9b55e99 (diff)
downloadlinux-881d1c25f765938a95def5afe39486ce39f9fc96.tar.xz
mmc: core: Add cache control for eMMC4.5 device
This patch adds cache feature of eMMC4.5 Spec. If device supports cache capability, host can utilize some specific operations. Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com> Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'include/linux/mmc/mmc.h')
-rw-r--r--include/linux/mmc/mmc.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h
index 8a05a21fc7c3..160e4c5bdae0 100644
--- a/include/linux/mmc/mmc.h
+++ b/include/linux/mmc/mmc.h
@@ -270,6 +270,8 @@ struct _mmc_csd {
* EXT_CSD fields
*/
+#define EXT_CSD_FLUSH_CACHE 32 /* W */
+#define EXT_CSD_CACHE_CTRL 33 /* R/W */
#define EXT_CSD_POWER_OFF_NOTIFICATION 34 /* R/W */
#define EXT_CSD_GP_SIZE_MULT 143 /* R/W */
#define EXT_CSD_PARTITION_ATTRIBUTE 156 /* R/W */
@@ -308,6 +310,7 @@ struct _mmc_csd {
#define EXT_CSD_PWR_CL_DDR_52_360 239 /* RO */
#define EXT_CSD_POWER_OFF_LONG_TIME 247 /* RO */
#define EXT_CSD_GENERIC_CMD6_TIME 248 /* RO */
+#define EXT_CSD_CACHE_SIZE 249 /* RO, 4 bytes */
/*
* EXT_CSD field definitions