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authorAdrian Hunter <adrian.hunter@intel.com>2015-02-06 15:12:57 +0300
committerUlf Hansson <ulf.hansson@linaro.org>2015-06-01 10:07:13 +0300
commitb097e07f57930eda774c83aa46e8e401686d01dc (patch)
tree95d8979dd8fec7f787b30e1538f960e999e3c1ef /include/linux/mmc
parent3853a042325e8f497c199020979c4fc824528c6e (diff)
downloadlinux-b097e07f57930eda774c83aa46e8e401686d01dc.tar.xz
mmc: mmc: Read card's valid driver strength mask
In preparation for supporing drive strength selection for eMMC, read the card's valid driver strengths. Note that though the SD spec uses the term "drive strength", the JEDEC eMMC spec uses the term "driver strength". Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'include/linux/mmc')
-rw-r--r--include/linux/mmc/card.h1
-rw-r--r--include/linux/mmc/mmc.h1
2 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
index 2f073d555793..4d3776d25925 100644
--- a/include/linux/mmc/card.h
+++ b/include/linux/mmc/card.h
@@ -97,6 +97,7 @@ struct mmc_ext_csd {
u8 raw_erased_mem_count; /* 181 */
u8 raw_ext_csd_structure; /* 194 */
u8 raw_card_type; /* 196 */
+ u8 raw_driver_strength; /* 197 */
u8 out_of_int_time; /* 198 */
u8 raw_pwr_cl_52_195; /* 200 */
u8 raw_pwr_cl_26_195; /* 201 */
diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h
index 124f562118b8..4819cfbc3795 100644
--- a/include/linux/mmc/mmc.h
+++ b/include/linux/mmc/mmc.h
@@ -302,6 +302,7 @@ struct _mmc_csd {
#define EXT_CSD_REV 192 /* RO */
#define EXT_CSD_STRUCTURE 194 /* RO */
#define EXT_CSD_CARD_TYPE 196 /* RO */
+#define EXT_CSD_DRIVER_STRENGTH 197 /* RO */
#define EXT_CSD_OUT_OF_INTERRUPT_TIME 198 /* RO */
#define EXT_CSD_PART_SWITCH_TIME 199 /* RO */
#define EXT_CSD_PWR_CL_52_195 200 /* RO */