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Commit c2e6e283 authored by Stanislav Nijnikov's avatar Stanislav Nijnikov Committed by Martin K. Petersen
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scsi: ufs: sysfs: power descriptor 

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: default avatarStanislav Nijnikov <stanislav.nijnikov@wdc.com>
Reviewed-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent c648c2d2
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Documentation/ABI/testing/sysfs-driver-ufs
View file @ c2e6e283
...@@ -441,3 +441,13 @@ Description: This file shows indication of the device life time ...@@ -441,3 +441,13 @@ Description: This file shows indication of the device life time
parameters. The full information about the descriptor parameters. The full information about the descriptor
could be found at UFS specifications 2.1. could be found at UFS specifications 2.1.
The file is read only. The file is read only.
What: /sys/bus/platform/drivers/ufshcd/*/power_descriptor/active_icc_levels_vcc*
Date: February 2018
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
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.
drivers/scsi/ufs/ufs-sysfs.c
View file @ c2e6e283
...@@ -368,12 +368,129 @@ static const struct attribute_group ufs_sysfs_health_descriptor_group = { ...@@ -368,12 +368,129 @@ static const struct attribute_group ufs_sysfs_health_descriptor_group = {
.attrs = ufs_sysfs_health_descriptor, .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 * 2, buf, 2); \
} \
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);
UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 2);
UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 3);
UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 4);
UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 5);
UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 6);
UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 7);
UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 8);
UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 9);
UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 10);
UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 11);
UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 12);
UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 13);
UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 14);
UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 15);
static struct attribute *ufs_sysfs_power_descriptor[] = {
&dev_attr_active_icc_levels_vcc0.attr,
&dev_attr_active_icc_levels_vcc1.attr,
&dev_attr_active_icc_levels_vcc2.attr,
&dev_attr_active_icc_levels_vcc3.attr,
&dev_attr_active_icc_levels_vcc4.attr,
&dev_attr_active_icc_levels_vcc5.attr,
&dev_attr_active_icc_levels_vcc6.attr,
&dev_attr_active_icc_levels_vcc7.attr,
&dev_attr_active_icc_levels_vcc8.attr,
&dev_attr_active_icc_levels_vcc9.attr,
&dev_attr_active_icc_levels_vcc10.attr,
&dev_attr_active_icc_levels_vcc11.attr,
&dev_attr_active_icc_levels_vcc12.attr,
&dev_attr_active_icc_levels_vcc13.attr,
&dev_attr_active_icc_levels_vcc14.attr,
&dev_attr_active_icc_levels_vcc15.attr,
&dev_attr_active_icc_levels_vccq0.attr,
&dev_attr_active_icc_levels_vccq1.attr,
&dev_attr_active_icc_levels_vccq2.attr,
&dev_attr_active_icc_levels_vccq3.attr,
&dev_attr_active_icc_levels_vccq4.attr,
&dev_attr_active_icc_levels_vccq5.attr,
&dev_attr_active_icc_levels_vccq6.attr,
&dev_attr_active_icc_levels_vccq7.attr,
&dev_attr_active_icc_levels_vccq8.attr,
&dev_attr_active_icc_levels_vccq9.attr,
&dev_attr_active_icc_levels_vccq10.attr,
&dev_attr_active_icc_levels_vccq11.attr,
&dev_attr_active_icc_levels_vccq12.attr,
&dev_attr_active_icc_levels_vccq13.attr,
&dev_attr_active_icc_levels_vccq14.attr,
&dev_attr_active_icc_levels_vccq15.attr,
&dev_attr_active_icc_levels_vccq20.attr,
&dev_attr_active_icc_levels_vccq21.attr,
&dev_attr_active_icc_levels_vccq22.attr,
&dev_attr_active_icc_levels_vccq23.attr,
&dev_attr_active_icc_levels_vccq24.attr,
&dev_attr_active_icc_levels_vccq25.attr,
&dev_attr_active_icc_levels_vccq26.attr,
&dev_attr_active_icc_levels_vccq27.attr,
&dev_attr_active_icc_levels_vccq28.attr,
&dev_attr_active_icc_levels_vccq29.attr,
&dev_attr_active_icc_levels_vccq210.attr,
&dev_attr_active_icc_levels_vccq211.attr,
&dev_attr_active_icc_levels_vccq212.attr,
&dev_attr_active_icc_levels_vccq213.attr,
&dev_attr_active_icc_levels_vccq214.attr,
&dev_attr_active_icc_levels_vccq215.attr,
NULL,
};
static const struct attribute_group ufs_sysfs_power_descriptor_group = {
.name = "power_descriptor",
.attrs = ufs_sysfs_power_descriptor,
};
static const struct attribute_group *ufs_sysfs_groups[] = { static const struct attribute_group *ufs_sysfs_groups[] = {
&ufs_sysfs_default_group, &ufs_sysfs_default_group,
&ufs_sysfs_device_descriptor_group, &ufs_sysfs_device_descriptor_group,
&ufs_sysfs_interconnect_descriptor_group, &ufs_sysfs_interconnect_descriptor_group,
&ufs_sysfs_geometry_descriptor_group, &ufs_sysfs_geometry_descriptor_group,
&ufs_sysfs_health_descriptor_group, &ufs_sysfs_health_descriptor_group,
&ufs_sysfs_power_descriptor_group,
NULL, NULL,
}; };
......
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