diff options
author | Stanislav Nijnikov | 2018-02-15 14:14:10 +0200 |
---|---|---|
committer | Martin K. Petersen | 2018-02-15 18:35:04 -0500 |
commit | d10b2a8ea8fd0d6c8a667dc1950c8c061bfbbcdd (patch) | |
tree | bf15871d46ba1a8fc4ace3844512a4308848420e /drivers/scsi/ufs/ufs-sysfs.c | |
parent | d829fc8a1058851f1058b4a29ea02da125c1684a (diff) |
scsi: ufs: sysfs: flags
This patch introduces a sysfs group entry for the UFS flags. The group adds
"flags" folder under the UFS driver sysfs entry
(/sys/bus/platform/drivers/ufshcd/*). The flags are shown as boolean value
("true" or "false"). The full information about the UFS flags could be
found at UFS specifications 2.1.
Signed-off-by: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/ufs/ufs-sysfs.c')
-rw-r--r-- | drivers/scsi/ufs/ufs-sysfs.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/drivers/scsi/ufs/ufs-sysfs.c b/drivers/scsi/ufs/ufs-sysfs.c index cd4d9d039ee9..a09a8a2ed46c 100644 --- a/drivers/scsi/ufs/ufs-sysfs.c +++ b/drivers/scsi/ufs/ufs-sysfs.c @@ -538,6 +538,44 @@ static const struct attribute_group ufs_sysfs_string_descriptors_group = { .attrs = ufs_sysfs_string_descriptors, }; +#define UFS_FLAG(_name, _uname) \ +static ssize_t _name##_show(struct device *dev, \ + struct device_attribute *attr, char *buf) \ +{ \ + bool flag; \ + struct ufs_hba *hba = dev_get_drvdata(dev); \ + if (ufshcd_query_flag(hba, UPIU_QUERY_OPCODE_READ_FLAG, \ + QUERY_FLAG_IDN##_uname, &flag)) \ + return -EINVAL; \ + return sprintf(buf, "%s\n", flag ? "true" : "false"); \ +} \ +static DEVICE_ATTR_RO(_name) + +UFS_FLAG(device_init, _FDEVICEINIT); +UFS_FLAG(permanent_wpe, _PERMANENT_WPE); +UFS_FLAG(power_on_wpe, _PWR_ON_WPE); +UFS_FLAG(bkops_enable, _BKOPS_EN); +UFS_FLAG(life_span_mode_enable, _LIFE_SPAN_MODE_ENABLE); +UFS_FLAG(phy_resource_removal, _FPHYRESOURCEREMOVAL); +UFS_FLAG(busy_rtc, _BUSY_RTC); +UFS_FLAG(disable_fw_update, _PERMANENTLY_DISABLE_FW_UPDATE); + +static struct attribute *ufs_sysfs_device_flags[] = { + &dev_attr_device_init.attr, + &dev_attr_permanent_wpe.attr, + &dev_attr_power_on_wpe.attr, + &dev_attr_bkops_enable.attr, + &dev_attr_life_span_mode_enable.attr, + &dev_attr_phy_resource_removal.attr, + &dev_attr_busy_rtc.attr, + &dev_attr_disable_fw_update.attr, + NULL, +}; + +static const struct attribute_group ufs_sysfs_flags_group = { + .name = "flags", + .attrs = ufs_sysfs_device_flags, +}; static const struct attribute_group *ufs_sysfs_groups[] = { &ufs_sysfs_default_group, @@ -547,6 +585,7 @@ static const struct attribute_group *ufs_sysfs_groups[] = { &ufs_sysfs_health_descriptor_group, &ufs_sysfs_power_descriptor_group, &ufs_sysfs_string_descriptors_group, + &ufs_sysfs_flags_group, NULL, }; |