linux-kernel - [PATCH v5 1/2] pm: runtime: Add new devm functions

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Message-ID: <20250317093445.361821-2-csokas.bence@prolan.hu>
Date: Mon, 17 Mar 2025 10:34:42 +0100
From: Bence Csókás <csokas.bence@...lan.hu>
To: <linux-pm@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	Csókás, Bence <csokas.bence@...lan.hu>, "Varshini
 Rajendran" <varshini.rajendran@...rochip.com>, Tudor Ambarus
	<tudor.ambarus@...aro.org>, Mark Brown <broonie@...nel.org>,
	<linux-spi@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>
CC: "Rafael J. Wysocki" <rafael@...nel.org>, Len Brown <len.brown@...el.com>,
	Pavel Machek <pavel@....cz>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Danilo Krummrich <dakr@...nel.org>, Alexander Dahl <ada@...rsis.com>,
	"Nicolas Ferre" <nicolas.ferre@...rochip.com>, Alexandre Belloni
	<alexandre.belloni@...tlin.com>, Claudiu Beznea <claudiu.beznea@...on.dev>,
	Pavel Machek <pavel@...nel.org>
Subject: [PATCH v5 1/2] pm: runtime: Add new devm functions

Add `devm_pm_runtime_set_active()` and
`devm_pm_runtime_get_noresume()` for
simplifying common use cases in drivers.

Signed-off-by: Bence Csókás <csokas.bence@...lan.hu>
---
 drivers/base/power/runtime.c | 36 ++++++++++++++++++++++++++++++++++++
 include/linux/pm_runtime.h   |  4 ++++
 2 files changed, 40 insertions(+)

diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c
index 9589ccb0fda2..821a8b4961d4 100644
--- a/drivers/base/power/runtime.c
+++ b/drivers/base/power/runtime.c
@@ -1568,6 +1568,24 @@ void pm_runtime_enable(struct device *dev)
 }
 EXPORT_SYMBOL_GPL(pm_runtime_enable);
 
+static void pm_runtime_set_suspended_action(void *data)
+{
+	pm_runtime_set_suspended(data);
+}
+
+/**
+ * devm_pm_runtime_set_active - devres-enabled version of pm_runtime_set_active.
+ *
+ * @dev: Device to handle.
+ */
+int devm_pm_runtime_set_active(struct device *dev)
+{
+	pm_runtime_set_active(dev);
+
+	return devm_add_action_or_reset(dev, pm_runtime_set_suspended_action, dev);
+}
+EXPORT_SYMBOL_GPL(devm_pm_runtime_set_active);
+
 static void pm_runtime_disable_action(void *data)
 {
 	pm_runtime_dont_use_autosuspend(data);
@@ -1590,6 +1608,24 @@ int devm_pm_runtime_enable(struct device *dev)
 }
 EXPORT_SYMBOL_GPL(devm_pm_runtime_enable);
 
+static void pm_runtime_put_noidle_action(void *data)
+{
+	pm_runtime_put_noidle(data);
+}
+
+/**
+ * devm_pm_runtime_get_noresume - devres-enabled version of pm_runtime_get_noresume.
+ *
+ * @dev: Device to handle.
+ */
+int devm_pm_runtime_get_noresume(struct device *dev)
+{
+	pm_runtime_get_noresume(dev);
+
+	return devm_add_action_or_reset(dev, pm_runtime_put_noidle_action, dev);
+}
+EXPORT_SYMBOL_GPL(devm_pm_runtime_get_noresume);
+
 /**
  * pm_runtime_forbid - Block runtime PM of a device.
  * @dev: Device to handle.
diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h
index 7fb5a459847e..364355da349a 100644
--- a/include/linux/pm_runtime.h
+++ b/include/linux/pm_runtime.h
@@ -96,7 +96,9 @@ extern void pm_runtime_new_link(struct device *dev);
 extern void pm_runtime_drop_link(struct device_link *link);
 extern void pm_runtime_release_supplier(struct device_link *link);
 
+int devm_pm_runtime_set_active(struct device *dev);
 extern int devm_pm_runtime_enable(struct device *dev);
+int devm_pm_runtime_get_noresume(struct device *dev);
 
 /**
  * pm_suspend_ignore_children - Set runtime PM behavior regarding children.
@@ -294,7 +296,9 @@ static inline bool pm_runtime_blocked(struct device *dev) { return true; }
 static inline void pm_runtime_allow(struct device *dev) {}
 static inline void pm_runtime_forbid(struct device *dev) {}
 
+static inline int devm_pm_runtime_set_active(struct device *dev) { return 0; }
 static inline int devm_pm_runtime_enable(struct device *dev) { return 0; }
+static inline int devm_pm_runtime_get_noresume(struct device *dev) { return 0; }
 
 static inline void pm_suspend_ignore_children(struct device *dev, bool enable) {}
 static inline void pm_runtime_get_noresume(struct device *dev) {}
-- 
2.48.1