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authorUri Yanai <uri.yanai@sandisk.com>2017-02-07 19:00:01 +0300
committerUlf Hansson <ulf.hansson@linaro.org>2017-02-14 11:11:00 +0300
commitefff8e7879b8b7f8a077f495262f0bb9cfaa0b06 (patch)
tree821f95ebc8d06025b37b0ee69d7fd903be322476
parent6962c2fb201878722ef78b513dae7c22dfa4919c (diff)
downloadlinux-efff8e7879b8b7f8a077f495262f0bb9cfaa0b06.tar.xz
mmc: Adding AUTO_BKOPS_EN bit set for Auto BKOPS support
Adding dedicated flag for AUTO_BKOPS in card->ext_csd structure. Read AUTO_BKOPS bit value from the device EXT_CSD and set to the card->ext_csd structure. In mmc_decode_ext_csd() add a print message in case the AUTO_BKOPS is enabled Signed-off-by: Uri Yanai <uri.yanai@sandisk.com> Signed-off-by: Alex Lemberg <alex.lemberg@sandisk.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
-rw-r--r--drivers/mmc/core/mmc.c6
-rw-r--r--include/linux/mmc/card.h1
-rw-r--r--include/linux/mmc/mmc.h1
3 files changed, 8 insertions, 0 deletions
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index 1b67e3085353..e01e70c24ca2 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -546,6 +546,12 @@ static int mmc_decode_ext_csd(struct mmc_card *card, u8 *ext_csd)
if (card->ext_csd.man_bkops_en)
pr_debug("%s: MAN_BKOPS_EN bit is set\n",
mmc_hostname(card->host));
+ card->ext_csd.auto_bkops_en =
+ (ext_csd[EXT_CSD_BKOPS_EN] &
+ EXT_CSD_AUTO_BKOPS_MASK);
+ if (card->ext_csd.auto_bkops_en)
+ pr_debug("%s: AUTO_BKOPS_EN bit is set\n",
+ mmc_hostname(card->host));
}
/* check whether the eMMC card supports HPI */
diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
index 29d00c91c25c..77e61e0a216a 100644
--- a/include/linux/mmc/card.h
+++ b/include/linux/mmc/card.h
@@ -83,6 +83,7 @@ struct mmc_ext_csd {
unsigned int hpi_cmd; /* cmd used as HPI */
bool bkops; /* background support bit */
bool man_bkops_en; /* manual bkops enable bit */
+ bool auto_bkops_en; /* auto bkops enable bit */
unsigned int data_sector_size; /* 512 bytes or 4KB */
unsigned int data_tag_unit_size; /* DATA TAG UNIT size */
unsigned int boot_ro_lock; /* ro lock support */
diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h
index 7406d9badda0..3ffc27aaeeaf 100644
--- a/include/linux/mmc/mmc.h
+++ b/include/linux/mmc/mmc.h
@@ -407,6 +407,7 @@ static inline bool mmc_op_multi(u32 opcode)
* BKOPS modes
*/
#define EXT_CSD_MANUAL_BKOPS_MASK 0x01
+#define EXT_CSD_AUTO_BKOPS_MASK 0x02
/*
* Command Queue