A lot of drivers create a dev_pm_ops struct with the system sleep
suspend/resume callbacks set to pm_runtime_force_suspend() and
pm_runtime_force_resume().
These drivers can now use the DEFINE_RUNTIME_DEV_PM_OPS() macro, which
will use pm_runtime_force_{suspend,resume}() as the system sleep
callbacks, while having the same dead code removal characteristic that
is already provided by DEFINE_SIMPLE_DEV_PM_OPS().
Signed-off-by: Paul Cercueil <paul@xxxxxxxxxxxxxxx>
---
include/linux/pm.h | 3 +++
include/linux/pm_runtime.h | 14 ++++++++++++++
2 files changed, 17 insertions(+)
diff --git a/include/linux/pm.h b/include/linux/pm.h
index a1ce29566aea..01c4fe495b7a 100644
--- a/include/linux/pm.h
+++ b/include/linux/pm.h
@@ -411,6 +411,9 @@ const struct dev_pm_ops __maybe_unused name = { \
* suspend and "early" resume callback pointers, .suspend_late() and
* .resume_early(), to the same routines as .runtime_suspend() and
* .runtime_resume(), respectively (and analogously for hibernation).
+ *
+ * Deprecated. You most likely don't want this macro. Use
+ * DEFINE_RUNTIME_DEV_PM_OPS() instead.
*/
#define UNIVERSAL_DEV_PM_OPS(name, suspend_fn, resume_fn, idle_fn) \
const struct dev_pm_ops __maybe_unused name = { \
diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h
index 016de5776b6d..4af454d29281 100644
--- a/include/linux/pm_runtime.h
+++ b/include/linux/pm_runtime.h
@@ -22,6 +22,20 @@
usage_count */
#define RPM_AUTO 0x08 /* Use autosuspend_delay */
+/*
+ * Use this for defining a set of PM operations to be used in all situations
+ * (system suspend, hibernation or runtime PM).
+ *
+ * Note that the behaviour differs from the deprecated UNIVERSAL_DEV_PM_OPS()
+ * macro, which uses the provided callbacks for both runtime PM and system
+ * sleep, while DEFINE_RUNTIME_DEV_PM_OPS() uses pm_runtime_force_suspend()
+ * and pm_runtime_force_resume() for its system sleep callbacks.
+ */
+#define DEFINE_RUNTIME_DEV_PM_OPS(name, suspend_fn, resume_fn, idle_fn) \
+ _DEFINE_DEV_PM_OPS(name, pm_runtime_force_suspend, \
+ pm_runtime_force_resume, suspend_fn, \
+ resume_fn, idle_fn)
+
#ifdef CONFIG_PM
extern struct workqueue_struct *pm_wq;
--
2.34.1
