[PATCH 2/6] pm: runtime: Add pm_runtime_put_mark_busy_autosusp() helper

[Sakari Ailus <sakari.ailus@linux.intel.com>]

Add pm_runtime_put_mark_busy_autosusp() helper function for users that
wish to set the last_busy timestamp to current time and put the
usage_count of the device and set the autosuspend timer.

Essentially calling pm_runtime_suspend_mark_busy_autosusp() equal to
calling first pm_runtime_mark_last_busy() and then
pm_runtime_put_autosuspend().

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
---
 include/linux/pm_runtime.h | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h
index 810330bb802b..59871ab1532a 100644
--- a/include/linux/pm_runtime.h
+++ b/include/linux/pm_runtime.h
@@ -494,6 +494,23 @@ static inline int pm_runtime_put_autosuspend(struct device *dev)
 	    RPM_GET_PUT | RPM_ASYNC | RPM_AUTO);
 }
 
+/**
+ * pm_runtime_put_mark_busy_autosusp - Update the last access time of a device
+ *				       and drop device usage counter and queue
+ *				       autosuspend if 0.
+ * @dev: Target device.
+ *
+ * Update the last access time of @dev using pm_runtime_mark_last_busy(), then
+ * decrement the runtime PM usage counter of @dev and if it turns out to be
+ * equal to 0, queue up a work item for @dev like in pm_request_autosuspend().
+ */
+static inline int pm_runtime_put_mark_busy_autosusp(struct device *dev)
+{
+	pm_runtime_mark_last_busy(dev);
+
+	return pm_runtime_autosuspend(dev);
+}
+
 /**
  * pm_runtime_put_sync - Drop device usage counter and run "idle check" if 0.
  * @dev: Target device.
-- 
2.39.2