PM / Runtime: Combine runtime PM entry points
This patch (as1424) combines the various public entry points for the
runtime PM routines into three simple functions: one for idle, one for
suspend, and one for resume. A new bitflag specifies whether or not
to increment or decrement the usage_count field.
The new entry points are named __pm_runtime_idle,
__pm_runtime_suspend, and __pm_runtime_resume, to reflect that they
are trampolines. Simultaneously, the corresponding internal routines
are renamed to rpm_idle, rpm_suspend, and rpm_resume.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h
index c030cac..5869d87 100644
--- a/include/linux/pm_runtime.h
+++ b/include/linux/pm_runtime.h
@@ -16,19 +16,17 @@
#define RPM_ASYNC 0x01 /* Request is asynchronous */
#define RPM_NOWAIT 0x02 /* Don't wait for concurrent
state change */
+#define RPM_GET_PUT 0x04 /* Increment/decrement the
+ usage_count */
#ifdef CONFIG_PM_RUNTIME
extern struct workqueue_struct *pm_wq;
-extern int pm_runtime_idle(struct device *dev);
-extern int pm_runtime_suspend(struct device *dev);
-extern int pm_runtime_resume(struct device *dev);
-extern int pm_request_idle(struct device *dev);
+extern int __pm_runtime_idle(struct device *dev, int rpmflags);
+extern int __pm_runtime_suspend(struct device *dev, int rpmflags);
+extern int __pm_runtime_resume(struct device *dev, int rpmflags);
extern int pm_schedule_suspend(struct device *dev, unsigned int delay);
-extern int pm_request_resume(struct device *dev);
-extern int __pm_runtime_get(struct device *dev, int rpmflags);
-extern int __pm_runtime_put(struct device *dev, int rpmflags);
extern int __pm_runtime_set_status(struct device *dev, unsigned int status);
extern int pm_runtime_barrier(struct device *dev);
extern void pm_runtime_enable(struct device *dev);
@@ -77,19 +75,22 @@
#else /* !CONFIG_PM_RUNTIME */
-static inline int pm_runtime_idle(struct device *dev) { return -ENOSYS; }
-static inline int pm_runtime_suspend(struct device *dev) { return -ENOSYS; }
-static inline int pm_runtime_resume(struct device *dev) { return 0; }
-static inline int pm_request_idle(struct device *dev) { return -ENOSYS; }
+static inline int __pm_runtime_idle(struct device *dev, int rpmflags)
+{
+ return -ENOSYS;
+}
+static inline int __pm_runtime_suspend(struct device *dev, int rpmflags)
+{
+ return -ENOSYS;
+}
+static inline int __pm_runtime_resume(struct device *dev, int rpmflags)
+{
+ return 1;
+}
static inline int pm_schedule_suspend(struct device *dev, unsigned int delay)
{
return -ENOSYS;
}
-static inline int pm_request_resume(struct device *dev) { return 0; }
-static inline int __pm_runtime_get(struct device *dev, int rpmflags)
- { return 1; }
-static inline int __pm_runtime_put(struct device *dev, int rpmflags)
- { return 0; }
static inline int __pm_runtime_set_status(struct device *dev,
unsigned int status) { return 0; }
static inline int pm_runtime_barrier(struct device *dev) { return 0; }
@@ -112,24 +113,49 @@
#endif /* !CONFIG_PM_RUNTIME */
+static inline int pm_runtime_idle(struct device *dev)
+{
+ return __pm_runtime_idle(dev, 0);
+}
+
+static inline int pm_runtime_suspend(struct device *dev)
+{
+ return __pm_runtime_suspend(dev, 0);
+}
+
+static inline int pm_runtime_resume(struct device *dev)
+{
+ return __pm_runtime_resume(dev, 0);
+}
+
+static inline int pm_request_idle(struct device *dev)
+{
+ return __pm_runtime_idle(dev, RPM_ASYNC);
+}
+
+static inline int pm_request_resume(struct device *dev)
+{
+ return __pm_runtime_resume(dev, RPM_ASYNC);
+}
+
static inline int pm_runtime_get(struct device *dev)
{
- return __pm_runtime_get(dev, RPM_ASYNC);
+ return __pm_runtime_resume(dev, RPM_GET_PUT | RPM_ASYNC);
}
static inline int pm_runtime_get_sync(struct device *dev)
{
- return __pm_runtime_get(dev, 0);
+ return __pm_runtime_resume(dev, RPM_GET_PUT);
}
static inline int pm_runtime_put(struct device *dev)
{
- return __pm_runtime_put(dev, RPM_ASYNC);
+ return __pm_runtime_idle(dev, RPM_GET_PUT | RPM_ASYNC);
}
static inline int pm_runtime_put_sync(struct device *dev)
{
- return __pm_runtime_put(dev, 0);
+ return __pm_runtime_idle(dev, RPM_GET_PUT);
}
static inline int pm_runtime_set_active(struct device *dev)