[Intel-gfx] [PATCH 5/8] Drm/i915/rpm: Add intel_runtime_idle

[tilak.tangudu at intel.com]

From: Anshuman Gupta <anshuman.gupta at intel.com>

Adding intel_runtime_idle (runtime_idle callback) to prepare the
tageted D3 state.

Since we have introduced i915 runtime_idle callback.
It need to be warranted that Runtime PM Core invokes runtime_idle
callback when runtime usages count becomes zero. That requires
to use pm_runtime_put instead of pm_runtime_put_autosuspend.

Cc: Rodrigo Vivi <rodrigo.vivi at intel.com>
Cc: Chris Wilson <chris.p.wilson at intel.com>
Signed-off-by: Anshuman Gupta <anshuman.gupta at intel.com>
---
 drivers/gpu/drm/i915/i915_driver.c      | 12 ++++++++++++
 drivers/gpu/drm/i915/intel_runtime_pm.c |  3 +--
 2 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_driver.c b/drivers/gpu/drm/i915/i915_driver.c
index deb8a8b76965..4c36554567fd 100644
--- a/drivers/gpu/drm/i915/i915_driver.c
+++ b/drivers/gpu/drm/i915/i915_driver.c
@@ -1576,6 +1576,17 @@ static int i915_pm_restore(struct device *kdev)
 	return i915_pm_resume(kdev);
 }
 
+static int intel_runtime_idle(struct device *kdev)
+{
+	struct drm_i915_private *i915 = kdev_to_i915(kdev);
+	int ret = 1;
+
+	pm_runtime_mark_last_busy(kdev);
+	pm_runtime_autosuspend(kdev);
+
+	return ret;
+}
+
 static int intel_runtime_suspend(struct device *kdev)
 {
 	struct drm_i915_private *dev_priv = kdev_to_i915(kdev);
@@ -1752,6 +1763,7 @@ const struct dev_pm_ops i915_pm_ops = {
 	.restore = i915_pm_restore,
 
 	/* S0ix (via runtime suspend) event handlers */
+	.runtime_idle = intel_runtime_idle,
 	.runtime_suspend = intel_runtime_suspend,
 	.runtime_resume = intel_runtime_resume,
 };
diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c
index 704beeeb560b..1c3ed0c29330 100644
--- a/drivers/gpu/drm/i915/intel_runtime_pm.c
+++ b/drivers/gpu/drm/i915/intel_runtime_pm.c
@@ -513,8 +513,7 @@ static void __intel_runtime_pm_put(struct intel_runtime_pm *rpm,
 
 	intel_runtime_pm_release(rpm, wakelock);
 
-	pm_runtime_mark_last_busy(kdev);
-	pm_runtime_put_autosuspend(kdev);
+	pm_runtime_put(kdev);
 }
 
 /**
-- 
2.25.1