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Subject[PATCH v1 2/9] ufs: sysfs: interconnect descriptor
Date
Signed-off-by: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
---
Documentation/ABI/testing/sysfs-driver-ufs | 19 +++++++++++++++++++
drivers/scsi/ufs/ufs-sysfs.c | 18 ++++++++++++++++++
drivers/scsi/ufs/ufs.h | 8 ++++++++
3 files changed, 45 insertions(+)

diff --git a/Documentation/ABI/testing/sysfs-driver-ufs b/Documentation/ABI/testing/sysfs-driver-ufs
index da39c63..35a8731 100644
--- a/Documentation/ABI/testing/sysfs-driver-ufs
+++ b/Documentation/ABI/testing/sysfs-driver-ufs
@@ -221,3 +221,22 @@ Description: This file shows the command maximum timeout for a change
parameters. The full information about the descriptor could
be found at UFS specifications 2.1.
The file is read only.
+
+
+What: /sys/bus/platform/drivers/ufshcd/*/interconnect_descriptor/unipro_version
+Date: August 2017
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows the MIPI UniPro version number in BCD format.
+ This is one of the UFS interconnect descriptor parameters.
+ The full information about the descriptor could be found at
+ UFS specifications 2.1.
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/interconnect_descriptor/mphy_version
+Date: August 2017
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows the MIPI M-PHY version number in BCD format.
+ This is one of the UFS interconnect descriptor parameters.
+ The full information about the descriptor could be found at
+ UFS specifications 2.1.
+ The file is read only.
\ No newline at end of file
diff --git a/drivers/scsi/ufs/ufs-sysfs.c b/drivers/scsi/ufs/ufs-sysfs.c
index 63a8e68..b8e29f2 100644
--- a/drivers/scsi/ufs/ufs-sysfs.c
+++ b/drivers/scsi/ufs/ufs-sysfs.c
@@ -132,8 +132,26 @@ static const struct attribute_group ufs_sysfs_device_descriptor_group = {
.attrs = ufs_sysfs_device_descriptor,
};

+#define UFS_INTERCONNECT_DESC_PARAM(_name, _uname, _size) \
+ UFS_DESC_PARAM(_name, _uname, INTERCONNECT, _size)
+
+UFS_INTERCONNECT_DESC_PARAM(unipro_version, UNIPRO_VER, WORD);
+UFS_INTERCONNECT_DESC_PARAM(mphy_version, MPHY_VER, WORD);
+
+static struct attribute *ufs_sysfs_interconnect_descriptor[] = {
+ &dev_attr_unipro_version.attr,
+ &dev_attr_mphy_version.attr,
+ NULL,
+};
+
+static const struct attribute_group ufs_sysfs_interconnect_descriptor_group = {
+ .name = "interconnect_descriptor",
+ .attrs = ufs_sysfs_interconnect_descriptor,
+};
+
static const struct attribute_group *ufs_sysfs_groups[] = {
&ufs_sysfs_device_descriptor_group,
+ &ufs_sysfs_interconnect_descriptor_group,
NULL,
};

diff --git a/drivers/scsi/ufs/ufs.h b/drivers/scsi/ufs/ufs.h
index 6ae1e08..773c049 100644
--- a/drivers/scsi/ufs/ufs.h
+++ b/drivers/scsi/ufs/ufs.h
@@ -230,6 +230,14 @@ enum device_desc_param {
DEVICE_DESC_PARAM_PRDCT_REV = 0x2A,
};

+/* Interconnect descriptor parameters offsets in bytes*/
+enum interconnect_desc_param {
+ INTERCONNECT_DESC_PARAM_LEN = 0x0,
+ INTERCONNECT_DESC_PARAM_TYPE = 0x1,
+ INTERCONNECT_DESC_PARAM_UNIPRO_VER = 0x2,
+ INTERCONNECT_DESC_PARAM_MPHY_VER = 0x4,
+};
+
/*
* Logical Unit Write Protect
* 00h: LU not write protected
--
2.7.4
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