Extend current sysfs access to ext_csd rpmb
parameters (RPMB partition size) and rel_sector
information.
Signed-off-by: Loic Pallardy <loic.pallardy@xxxxxxxxxxxxxx>
---
Documentation/mmc/mmc-dev-attrs.txt | 7 +++++++
drivers/mmc/core/mmc.c | 4 ++++
2 files changed, 11 insertions(+)
diff --git a/Documentation/mmc/mmc-dev-attrs.txt b/Documentation/mmc/mmc-dev-attrs.txt
index 22ae844..0d98fac 100644
--- a/Documentation/mmc/mmc-dev-attrs.txt
+++ b/Documentation/mmc/mmc-dev-attrs.txt
@@ -25,6 +25,8 @@ All attributes are read-only.
serial Product Serial Number (from CID Register)
erase_size Erase group size
preferred_erase_size Preferred erase size
+ raw_rpmb_size_mult RPMB partition size
+ rel_sectors Reliable write sector count
Note on Erase Size and Preferred Erase Size:
@@ -65,6 +67,11 @@ Note on Erase Size and Preferred Erase Size:
"preferred_erase_size" is in bytes.
+Note on raw_rpmb_size_mult:
+ "raw_rpmb_size_mult" is a mutliple of 128kB block.
+ RPMB size in byte is calculated by using the following equation:
+ RPMB partition size = 128kB x raw_rpmb_size_mult
+
SD/MMC/SDIO Clock Gating Attribute
==================================
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index 8a459cb..0f2449c 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -615,6 +615,8 @@ MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial);
MMC_DEV_ATTR(enhanced_area_offset, "%llu\n",
card->ext_csd.enhanced_area_offset);
MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size);
+MMC_DEV_ATTR(raw_rpmb_size_mult, "%#x\n", card->ext_csd.raw_rpmb_size_mult);
+MMC_DEV_ATTR(rel_sectors, "%#x\n", card->ext_csd.rel_sectors);
static struct attribute *mmc_std_attrs[] = {
&dev_attr_cid.attr,
@@ -630,6 +632,8 @@ static struct attribute *mmc_std_attrs[] = {
&dev_attr_serial.attr,
&dev_attr_enhanced_area_offset.attr,
&dev_attr_enhanced_area_size.attr,
+ &dev_attr_raw_rpmb_size_mult.attr,
+ &dev_attr_rel_sectors.attr,
NULL,
};
--
1.7.11.1
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