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Diffstat (limited to 'drivers/base/power/sysfs.c')
-rw-r--r--drivers/base/power/sysfs.c98
1 files changed, 78 insertions, 20 deletions
diff --git a/drivers/base/power/sysfs.c b/drivers/base/power/sysfs.c
index a4c33bc5125..e56b4388fe6 100644
--- a/drivers/base/power/sysfs.c
+++ b/drivers/base/power/sysfs.c
@@ -6,6 +6,7 @@
#include <linux/string.h>
#include <linux/pm_runtime.h>
#include <asm/atomic.h>
+#include <linux/jiffies.h>
#include "power.h"
/*
@@ -73,6 +74,8 @@
* device are known to the PM core. However, for some devices this
* attribute is set to "enabled" by bus type code or device drivers and in
* that cases it should be safe to leave the default value.
+ *
+ * wakeup_count - Report the number of wakeup events related to the device
*/
static const char enabled[] = "enabled";
@@ -108,6 +111,65 @@ static ssize_t control_store(struct device * dev, struct device_attribute *attr,
}
static DEVICE_ATTR(control, 0644, control_show, control_store);
+
+static ssize_t rtpm_active_time_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int ret;
+ spin_lock_irq(&dev->power.lock);
+ update_pm_runtime_accounting(dev);
+ ret = sprintf(buf, "%i\n", jiffies_to_msecs(dev->power.active_jiffies));
+ spin_unlock_irq(&dev->power.lock);
+ return ret;
+}
+
+static DEVICE_ATTR(runtime_active_time, 0444, rtpm_active_time_show, NULL);
+
+static ssize_t rtpm_suspended_time_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int ret;
+ spin_lock_irq(&dev->power.lock);
+ update_pm_runtime_accounting(dev);
+ ret = sprintf(buf, "%i\n",
+ jiffies_to_msecs(dev->power.suspended_jiffies));
+ spin_unlock_irq(&dev->power.lock);
+ return ret;
+}
+
+static DEVICE_ATTR(runtime_suspended_time, 0444, rtpm_suspended_time_show, NULL);
+
+static ssize_t rtpm_status_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ const char *p;
+
+ if (dev->power.runtime_error) {
+ p = "error\n";
+ } else if (dev->power.disable_depth) {
+ p = "unsupported\n";
+ } else {
+ switch (dev->power.runtime_status) {
+ case RPM_SUSPENDED:
+ p = "suspended\n";
+ break;
+ case RPM_SUSPENDING:
+ p = "suspending\n";
+ break;
+ case RPM_RESUMING:
+ p = "resuming\n";
+ break;
+ case RPM_ACTIVE:
+ p = "active\n";
+ break;
+ default:
+ return -EIO;
+ }
+ }
+ return sprintf(buf, p);
+}
+
+static DEVICE_ATTR(runtime_status, 0444, rtpm_status_show, NULL);
#endif
static ssize_t
@@ -144,6 +206,16 @@ wake_store(struct device * dev, struct device_attribute *attr,
static DEVICE_ATTR(wakeup, 0644, wake_show, wake_store);
+#ifdef CONFIG_PM_SLEEP
+static ssize_t wakeup_count_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return sprintf(buf, "%lu\n", dev->power.wakeup_count);
+}
+
+static DEVICE_ATTR(wakeup_count, 0444, wakeup_count_show, NULL);
+#endif
+
#ifdef CONFIG_PM_ADVANCED_DEBUG
#ifdef CONFIG_PM_RUNTIME
@@ -172,27 +244,8 @@ static ssize_t rtpm_enabled_show(struct device *dev,
return sprintf(buf, "enabled\n");
}
-static ssize_t rtpm_status_show(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- if (dev->power.runtime_error)
- return sprintf(buf, "error\n");
- switch (dev->power.runtime_status) {
- case RPM_SUSPENDED:
- return sprintf(buf, "suspended\n");
- case RPM_SUSPENDING:
- return sprintf(buf, "suspending\n");
- case RPM_RESUMING:
- return sprintf(buf, "resuming\n");
- case RPM_ACTIVE:
- return sprintf(buf, "active\n");
- }
- return -EIO;
-}
-
static DEVICE_ATTR(runtime_usage, 0444, rtpm_usagecount_show, NULL);
static DEVICE_ATTR(runtime_active_kids, 0444, rtpm_children_show, NULL);
-static DEVICE_ATTR(runtime_status, 0444, rtpm_status_show, NULL);
static DEVICE_ATTR(runtime_enabled, 0444, rtpm_enabled_show, NULL);
#endif
@@ -228,14 +281,19 @@ static DEVICE_ATTR(async, 0644, async_show, async_store);
static struct attribute * power_attrs[] = {
#ifdef CONFIG_PM_RUNTIME
&dev_attr_control.attr,
+ &dev_attr_runtime_status.attr,
+ &dev_attr_runtime_suspended_time.attr,
+ &dev_attr_runtime_active_time.attr,
#endif
&dev_attr_wakeup.attr,
+#ifdef CONFIG_PM_SLEEP
+ &dev_attr_wakeup_count.attr,
+#endif
#ifdef CONFIG_PM_ADVANCED_DEBUG
&dev_attr_async.attr,
#ifdef CONFIG_PM_RUNTIME
&dev_attr_runtime_usage.attr,
&dev_attr_runtime_active_kids.attr,
- &dev_attr_runtime_status.attr,
&dev_attr_runtime_enabled.attr,
#endif
#endif