Merge branch 'for-6.15/amd_sfh' into for-linus

From: Mario Limonciello <mario.limonciello@amd.com>

Some platforms include a human presence detection (HPD) sensor. When
enabled and a user is detected a wake event will be emitted from the
sensor fusion hub that software can react to.

Example use cases are "wake from suspend on approach" or to "lock
when leaving".

This is currently enabled by default on supported systems, but users
can't control it. This essentially means that wake on approach is
enabled which is a really surprising behavior to users that don't
expect it.

Instead of defaulting to enabled add a sysfs knob that users can
use to enable the feature if desirable and set it to disabled by
default.

1 files changed, 54 insertions, 12 deletions

diff --git a/include/linux/device.h b/include/linux/device.h
index 667cb6db9019..80a5b3268986 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -399,7 +399,23 @@ void __iomem *devm_of_iomap(struct device *dev,
 #endif
 
 /* allows to add/remove a custom action to devres stack */
-void devm_remove_action(struct device *dev, void (*action)(void *), void *data);
+int devm_remove_action_nowarn(struct device *dev, void (*action)(void *), void *data);
+
+/**
+ * devm_remove_action() - removes previously added custom action
+ * @dev: Device that owns the action
+ * @action: Function implementing the action
+ * @data: Pointer to data passed to @action implementation
+ *
+ * Removes instance of @action previously added by devm_add_action().
+ * Both action and data should match one of the existing entries.
+ */
+static inline
+void devm_remove_action(struct device *dev, void (*action)(void *), void *data)
+{
+	WARN_ON(devm_remove_action_nowarn(dev, action, data));
+}
+
 void devm_release_action(struct device *dev, void (*action)(void *), void *data);
 
 int __devm_add_action(struct device *dev, void (*action)(void *), void *data, const char *name);
@@ -1074,18 +1090,44 @@ void device_del(struct device *dev);
 
 DEFINE_FREE(device_del, struct device *, if (_T) device_del(_T))
 
-int device_for_each_child(struct device *dev, void *data,
-			  int (*fn)(struct device *dev, void *data));
-int device_for_each_child_reverse(struct device *dev, void *data,
-				  int (*fn)(struct device *dev, void *data));
+int device_for_each_child(struct device *parent, void *data,
+			  device_iter_t fn);
+int device_for_each_child_reverse(struct device *parent, void *data,
+				  device_iter_t fn);
 int device_for_each_child_reverse_from(struct device *parent,
-				       struct device *from, const void *data,
-				       int (*fn)(struct device *, const void *));
-struct device *device_find_child(struct device *dev, void *data,
-				 int (*match)(struct device *dev, void *data));
-struct device *device_find_child_by_name(struct device *parent,
-					 const char *name);
-struct device *device_find_any_child(struct device *parent);
+				       struct device *from, void *data,
+				       device_iter_t fn);
+struct device *device_find_child(struct device *parent, const void *data,
+				 device_match_t match);
+/**
+ * device_find_child_by_name - device iterator for locating a child device.
+ * @parent: parent struct device
+ * @name: name of the child device
+ *
+ * This is similar to the device_find_child() function above, but it
+ * returns a reference to a device that has the name @name.
+ *
+ * NOTE: you will need to drop the reference with put_device() after use.
+ */
+static inline struct device *device_find_child_by_name(struct device *parent,
+						       const char *name)
+{
+	return device_find_child(parent, name, device_match_name);
+}
+
+/**
+ * device_find_any_child - device iterator for locating a child device, if any.
+ * @parent: parent struct device
+ *
+ * This is similar to the device_find_child() function above, but it
+ * returns a reference to a child device, if any.
+ *
+ * NOTE: you will need to drop the reference with put_device() after use.
+ */
+static inline struct device *device_find_any_child(struct device *parent)
+{
+	return device_find_child(parent, NULL, device_match_any);
+}
 
 int device_rename(struct device *dev, const char *new_name);
 int device_move(struct device *dev, struct device *new_parent,