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authorStanislav Nijnikov <stanislav.nijnikov@wdc.com>2018-03-01 13:48:06 +0300
committerMartin K. Petersen <martin.petersen@oracle.com>2018-03-22 04:21:25 +0300
commit114c1aa210494a02c26aa33f793e5b641df01989 (patch)
treed9b9faa8e0e970b33bf4f10a0c4c5349680dad99 /drivers/scsi
parent61c187e46ebb27f51b52bd0eb68b7f534a300184 (diff)
downloadlinux-114c1aa210494a02c26aa33f793e5b641df01989.tar.xz
scsi: ufs: sysfs: reworking of the rpm_lvl and spm_lvl entries
Read from these files will return the integer value of the chosen power management level now. Separate entries were added to show the target UFS device and UIC link states. The description of the possible power managements levels was added to the ABI file. The on-write behaviour of these entries wasn't changed. [mkp: typo] Signed-off-by: Stanislav Nijnikov <stanislav.nijnikov@wdc.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi')
-rw-r--r--drivers/scsi/ufs/ufs-sysfs.c92
1 files changed, 47 insertions, 45 deletions
diff --git a/drivers/scsi/ufs/ufs-sysfs.c b/drivers/scsi/ufs/ufs-sysfs.c
index cd7174d2d225..4ff9e0b7eba1 100644
--- a/drivers/scsi/ufs/ufs-sysfs.c
+++ b/drivers/scsi/ufs/ufs-sysfs.c
@@ -57,29 +57,8 @@ static ssize_t rpm_lvl_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct ufs_hba *hba = dev_get_drvdata(dev);
- int curr_len;
- u8 lvl;
-
- curr_len = snprintf(buf, PAGE_SIZE,
- "\nCurrent Runtime PM level [%d] => dev_state [%s] link_state [%s]\n",
- hba->rpm_lvl,
- ufschd_ufs_dev_pwr_mode_to_string(
- ufs_pm_lvl_states[hba->rpm_lvl].dev_state),
- ufschd_uic_link_state_to_string(
- ufs_pm_lvl_states[hba->rpm_lvl].link_state));
-
- curr_len += snprintf((buf + curr_len), (PAGE_SIZE - curr_len),
- "\nAll available Runtime PM levels info:\n");
- for (lvl = UFS_PM_LVL_0; lvl < UFS_PM_LVL_MAX; lvl++)
- curr_len += snprintf((buf + curr_len), (PAGE_SIZE - curr_len),
- "\tRuntime PM level [%d] => dev_state [%s] link_state [%s]\n",
- lvl,
- ufschd_ufs_dev_pwr_mode_to_string(
- ufs_pm_lvl_states[lvl].dev_state),
- ufschd_uic_link_state_to_string(
- ufs_pm_lvl_states[lvl].link_state));
-
- return curr_len;
+
+ return sprintf(buf, "%d\n", hba->rpm_lvl);
}
static ssize_t rpm_lvl_store(struct device *dev,
@@ -88,33 +67,30 @@ static ssize_t rpm_lvl_store(struct device *dev,
return ufs_sysfs_pm_lvl_store(dev, attr, buf, count, true);
}
+static ssize_t rpm_target_dev_state_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+
+ return sprintf(buf, "%s\n", ufschd_ufs_dev_pwr_mode_to_string(
+ ufs_pm_lvl_states[hba->rpm_lvl].dev_state));
+}
+
+static ssize_t rpm_target_link_state_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+
+ return sprintf(buf, "%s\n", ufschd_uic_link_state_to_string(
+ ufs_pm_lvl_states[hba->rpm_lvl].link_state));
+}
+
static ssize_t spm_lvl_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct ufs_hba *hba = dev_get_drvdata(dev);
- int curr_len;
- u8 lvl;
-
- curr_len = snprintf(buf, PAGE_SIZE,
- "\nCurrent System PM level [%d] => dev_state [%s] link_state [%s]\n",
- hba->spm_lvl,
- ufschd_ufs_dev_pwr_mode_to_string(
- ufs_pm_lvl_states[hba->spm_lvl].dev_state),
- ufschd_uic_link_state_to_string(
- ufs_pm_lvl_states[hba->spm_lvl].link_state));
- curr_len += snprintf((buf + curr_len), (PAGE_SIZE - curr_len),
- "\nAll available System PM levels info:\n");
- for (lvl = UFS_PM_LVL_0; lvl < UFS_PM_LVL_MAX; lvl++)
- curr_len += snprintf((buf + curr_len), (PAGE_SIZE - curr_len),
- "\tSystem PM level [%d] => dev_state [%s] link_state [%s]\n",
- lvl,
- ufschd_ufs_dev_pwr_mode_to_string(
- ufs_pm_lvl_states[lvl].dev_state),
- ufschd_uic_link_state_to_string(
- ufs_pm_lvl_states[lvl].link_state));
-
- return curr_len;
+ return sprintf(buf, "%d\n", hba->spm_lvl);
}
static ssize_t spm_lvl_store(struct device *dev,
@@ -123,12 +99,38 @@ static ssize_t spm_lvl_store(struct device *dev,
return ufs_sysfs_pm_lvl_store(dev, attr, buf, count, false);
}
+static ssize_t spm_target_dev_state_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+
+ return sprintf(buf, "%s\n", ufschd_ufs_dev_pwr_mode_to_string(
+ ufs_pm_lvl_states[hba->spm_lvl].dev_state));
+}
+
+static ssize_t spm_target_link_state_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+
+ return sprintf(buf, "%s\n", ufschd_uic_link_state_to_string(
+ ufs_pm_lvl_states[hba->spm_lvl].link_state));
+}
+
static DEVICE_ATTR_RW(rpm_lvl);
+static DEVICE_ATTR_RO(rpm_target_dev_state);
+static DEVICE_ATTR_RO(rpm_target_link_state);
static DEVICE_ATTR_RW(spm_lvl);
+static DEVICE_ATTR_RO(spm_target_dev_state);
+static DEVICE_ATTR_RO(spm_target_link_state);
static struct attribute *ufs_sysfs_ufshcd_attrs[] = {
&dev_attr_rpm_lvl.attr,
+ &dev_attr_rpm_target_dev_state.attr,
+ &dev_attr_rpm_target_link_state.attr,
&dev_attr_spm_lvl.attr,
+ &dev_attr_spm_target_dev_state.attr,
+ &dev_attr_spm_target_link_state.attr,
NULL
};