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@xxxxxxxxxxx>
Signed-off-by: Alex Lemberg <alex.lemberg@xxxxxxxxxxx>
---
Changes in v3:
- move the code inversing manual bkops to a separate patch
Changes in v2:
- inverse the logic for printing the debug message.
only print when bits are set.
---
drivers/mmc/core/mmc.c | 6 ++++++
include/linux/mmc/card.h | 1 +
include/linux/mmc/mmc.h | 1 +
3 files changed, 8 insertions(+)
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index 9d1c149..f70f6a1 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -533,6 +533,12 @@ 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 00449e5..e3f1031 100644
--- a/include/linux/mmc/card.h
+++ b/include/linux/mmc/card.h
@@ -84,6 +84,7 @@ 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 a074082..126b8d5 100644
--- a/include/linux/mmc/mmc.h
+++ b/include/linux/mmc/mmc.h
@@ -449,6 +449,7 @@ struct _mmc_csd {
* BKOPS modes
*/
#define EXT_CSD_MANUAL_BKOPS_MASK 0x01
+#define EXT_CSD_AUTO_BKOPS_MASK 0x02
/*
* Command Queue
--
1.9.1
--
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