1 files changed, 92 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gt/intel_gt_pm.h b/drivers/gpu/drm/i915/gt/intel_gt_pm.h
new file mode 100644
index 000000000..6c9a46452
--- /dev/null
+++ b/drivers/gpu/drm/i915/gt/intel_gt_pm.h
@@ -0,0 +1,92 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef INTEL_GT_PM_H
+#define INTEL_GT_PM_H
+
+#include <linux/types.h>
+
+#include "intel_gt_types.h"
+#include "intel_wakeref.h"
+
+static inline bool intel_gt_pm_is_awake(const struct intel_gt *gt)
+{
+	return intel_wakeref_is_active(&gt->wakeref);
+}
+
+static inline void intel_gt_pm_get(struct intel_gt *gt)
+{
+	intel_wakeref_get(&gt->wakeref);
+}
+
+static inline void __intel_gt_pm_get(struct intel_gt *gt)
+{
+	__intel_wakeref_get(&gt->wakeref);
+}
+
+static inline bool intel_gt_pm_get_if_awake(struct intel_gt *gt)
+{
+	return intel_wakeref_get_if_active(&gt->wakeref);
+}
+
+static inline void intel_gt_pm_might_get(struct intel_gt *gt)
+{
+	intel_wakeref_might_get(&gt->wakeref);
+}
+
+static inline void intel_gt_pm_put(struct intel_gt *gt)
+{
+	intel_wakeref_put(&gt->wakeref);
+}
+
+static inline void intel_gt_pm_put_async(struct intel_gt *gt)
+{
+	intel_wakeref_put_async(&gt->wakeref);
+}
+
+static inline void intel_gt_pm_might_put(struct intel_gt *gt)
+{
+	intel_wakeref_might_put(&gt->wakeref);
+}
+
+#define with_intel_gt_pm(gt, tmp) \
+	for (tmp = 1, intel_gt_pm_get(gt); tmp; \
+	     intel_gt_pm_put(gt), tmp = 0)
+
+/**
+ * with_intel_gt_pm_if_awake - if GT is PM awake, get a reference to prevent
+ *	it to sleep, run some code and then asynchrously put the reference
+ *	away.
+ *
+ * @gt: pointer to the gt
+ * @wf: pointer to a temporary wakeref.
+ */
+#define with_intel_gt_pm_if_awake(gt, wf) \
+	for (wf = intel_gt_pm_get_if_awake(gt); wf; intel_gt_pm_put_async(gt), wf = 0)
+
+static inline int intel_gt_pm_wait_for_idle(struct intel_gt *gt)
+{
+	return intel_wakeref_wait_for_idle(&gt->wakeref);
+}
+
+void intel_gt_pm_init_early(struct intel_gt *gt);
+void intel_gt_pm_init(struct intel_gt *gt);
+void intel_gt_pm_fini(struct intel_gt *gt);
+
+void intel_gt_suspend_prepare(struct intel_gt *gt);
+void intel_gt_suspend_late(struct intel_gt *gt);
+int intel_gt_resume(struct intel_gt *gt);
+
+void intel_gt_runtime_suspend(struct intel_gt *gt);
+int intel_gt_runtime_resume(struct intel_gt *gt);
+
+ktime_t intel_gt_get_awake_time(const struct intel_gt *gt);
+
+static inline bool is_mock_gt(const struct intel_gt *gt)
+{
+	return I915_SELFTEST_ONLY(gt->awake == -ENODEV);
+}
+
+#endif /* INTEL_GT_PM_H */