subject:"\[PATCH v4 06\/10\] ufs\: sysfs\: power descriptor"

[PATCH v4 06/10] ufs: sysfs: power descriptor

2018-02-01 Thread Stanislav Nijnikov

This patch introduces a sysfs group entry for the UFS power descriptor
parameters. The group adds "power_descriptor" folder under the UFS driver
sysfs entry (/sys/bus/platform/drivers/ufshcd/*). The parameters are shown
as hexadecimal numbers. The full information about the parameters could be
found at UFS specifications 2.1.

Signed-off-by: Stanislav Nijnikov 

Reviewed-by: Greg Kroah-Hartman 
---
 Documentation/ABI/testing/sysfs-driver-ufs |  10 +++
 drivers/scsi/ufs/ufs-sysfs.c   | 118 +
 2 files changed, 128 insertions(+)

diff --git a/Documentation/ABI/testing/sysfs-driver-ufs 
b/Documentation/ABI/testing/sysfs-driver-ufs
index ddb012b..7460566 100644
--- a/Documentation/ABI/testing/sysfs-driver-ufs
+++ b/Documentation/ABI/testing/sysfs-driver-ufs
@@ -441,3 +441,13 @@ Description:   This file shows indication of the 
device life time
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/*/power_descriptor/active_icc_levels_vcc*
+Date:  February 2018
+Contact:   Stanislav Nijnikov 
+Description:   This file shows maximum VCC, VCCQ and VCCQ2 value for
+   active ICC levels from 0 to 15. This is one of the UFS
+   power descriptor parameters. The full information about
+   the descriptor could be found at UFS specifications 2.1.
+   The file is read only.
diff --git a/drivers/scsi/ufs/ufs-sysfs.c b/drivers/scsi/ufs/ufs-sysfs.c
index 1c89009..d2e6b49 100644
--- a/drivers/scsi/ufs/ufs-sysfs.c
+++ b/drivers/scsi/ufs/ufs-sysfs.c
@@ -383,12 +383,130 @@ static const struct attribute_group 
ufs_sysfs_health_descriptor_group = {
.attrs = ufs_sysfs_health_descriptor,
 };
 
+#define UFS_POWER_DESC_PARAM(_name, _uname, _index)   \
+static ssize_t _name##_index##_show(struct device *dev,   \
+   struct device_attribute *attr, char *buf) \
+{ \
+   struct ufs_hba *hba = dev_get_drvdata(dev);   \
+   return ufs_sysfs_read_desc_param(hba, QUERY_DESC_IDN_POWER, 0,\
+   PWR_DESC##_uname##_0 + _index * UFS_PARAM_WORD_SIZE,  \
+   buf, UFS_PARAM_WORD_SIZE);\
+} \
+static DEVICE_ATTR_RO(_name##_index)
+
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 0);
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 1);
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 2);
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 3);
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 4);
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 5);
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 6);
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 7);
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 8);
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 9);
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 10);
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 11);
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 12);
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 13);
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 14);
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 15);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 0);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 1);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 2);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 3);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 4);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 5);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 6);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 7);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 8);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 9);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 10);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 11);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 12);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 13);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 14);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 15);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 0);

[PATCH v4 06/10] ufs: sysfs: power descriptor

2018-02-01 Thread Stanislav Nijnikov

This patch introduces a sysfs group entry for the UFS power descriptor
parameters. The group adds "power_descriptor" folder under the UFS driver
sysfs entry (/sys/bus/platform/drivers/ufshcd/*). The parameters are shown
as hexadecimal numbers. The full information about the parameters could be
found at UFS specifications 2.1.

Signed-off-by: Stanislav Nijnikov 

Reviewed-by: Greg Kroah-Hartman 
---
 Documentation/ABI/testing/sysfs-driver-ufs |  10 +++
 drivers/scsi/ufs/ufs-sysfs.c   | 118 +
 2 files changed, 128 insertions(+)

diff --git a/Documentation/ABI/testing/sysfs-driver-ufs 
b/Documentation/ABI/testing/sysfs-driver-ufs
index ddb012b..7460566 100644
--- a/Documentation/ABI/testing/sysfs-driver-ufs
+++ b/Documentation/ABI/testing/sysfs-driver-ufs
@@ -441,3 +441,13 @@ Description:   This file shows indication of the 
device life time
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/*/power_descriptor/active_icc_levels_vcc*
+Date:  February 2018
+Contact:   Stanislav Nijnikov 
+Description:   This file shows maximum VCC, VCCQ and VCCQ2 value for
+   active ICC levels from 0 to 15. This is one of the UFS
+   power descriptor parameters. The full information about
+   the descriptor could be found at UFS specifications 2.1.
+   The file is read only.
diff --git a/drivers/scsi/ufs/ufs-sysfs.c b/drivers/scsi/ufs/ufs-sysfs.c
index 1c89009..d2e6b49 100644
--- a/drivers/scsi/ufs/ufs-sysfs.c
+++ b/drivers/scsi/ufs/ufs-sysfs.c
@@ -383,12 +383,130 @@ static const struct attribute_group 
ufs_sysfs_health_descriptor_group = {
.attrs = ufs_sysfs_health_descriptor,
 };
 
+#define UFS_POWER_DESC_PARAM(_name, _uname, _index)   \
+static ssize_t _name##_index##_show(struct device *dev,   \
+   struct device_attribute *attr, char *buf) \
+{ \
+   struct ufs_hba *hba = dev_get_drvdata(dev);   \
+   return ufs_sysfs_read_desc_param(hba, QUERY_DESC_IDN_POWER, 0,\
+   PWR_DESC##_uname##_0 + _index * UFS_PARAM_WORD_SIZE,  \
+   buf, UFS_PARAM_WORD_SIZE);\
+} \
+static DEVICE_ATTR_RO(_name##_index)
+
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 0);
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 1);
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 2);
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 3);
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 4);
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 5);
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 6);
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 7);
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 8);
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 9);
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 10);
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 11);
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 12);
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 13);
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 14);
+UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 15);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 0);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 1);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 2);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 3);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 4);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 5);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 6);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 7);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 8);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 9);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 10);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 11);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 12);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 13);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 14);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 15);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 0);
+UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 1);

[PATCH v4 06/10] ufs: sysfs: power descriptor

[PATCH v4 06/10] ufs: sysfs: power descriptor

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