1 files changed, 57 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/xe_pm.h b/drivers/gpu/drm/xe/xe_pm.h
new file mode 100644
index 000000000000..6b27039e7b2d
--- /dev/null
+++ b/drivers/gpu/drm/xe/xe_pm.h
@@ -0,0 +1,57 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2022 Intel Corporation
+ */
+
+#ifndef _XE_PM_H_
+#define _XE_PM_H_
+
+#include <linux/cleanup.h>
+#include <linux/pm_runtime.h>
+
+#define DEFAULT_VRAM_THRESHOLD 300 /* in MB */
+
+struct xe_device;
+
+int xe_pm_suspend(struct xe_device *xe);
+int xe_pm_resume(struct xe_device *xe);
+
+int xe_pm_init_early(struct xe_device *xe);
+int xe_pm_init(struct xe_device *xe);
+void xe_pm_fini(struct xe_device *xe);
+bool xe_pm_runtime_suspended(struct xe_device *xe);
+int xe_pm_runtime_suspend(struct xe_device *xe);
+int xe_pm_runtime_resume(struct xe_device *xe);
+void xe_pm_runtime_get(struct xe_device *xe);
+int xe_pm_runtime_get_ioctl(struct xe_device *xe);
+void xe_pm_runtime_put(struct xe_device *xe);
+bool xe_pm_runtime_get_if_active(struct xe_device *xe);
+bool xe_pm_runtime_get_if_in_use(struct xe_device *xe);
+void xe_pm_runtime_get_noresume(struct xe_device *xe);
+bool xe_pm_runtime_resume_and_get(struct xe_device *xe);
+void xe_pm_assert_unbounded_bridge(struct xe_device *xe);
+int xe_pm_set_vram_threshold(struct xe_device *xe, u32 threshold);
+void xe_pm_d3cold_allowed_toggle(struct xe_device *xe);
+bool xe_rpm_reclaim_safe(const struct xe_device *xe);
+struct task_struct *xe_pm_read_callback_task(struct xe_device *xe);
+int xe_pm_block_on_suspend(struct xe_device *xe);
+void xe_pm_might_block_on_suspend(void);
+int xe_pm_module_init(void);
+
+static inline void __xe_pm_runtime_noop(struct xe_device *xe) {}
+
+DEFINE_GUARD(xe_pm_runtime, struct xe_device *,
+	     xe_pm_runtime_get(_T), xe_pm_runtime_put(_T))
+DEFINE_GUARD(xe_pm_runtime_noresume, struct xe_device *,
+	     xe_pm_runtime_get_noresume(_T), xe_pm_runtime_put(_T))
+DEFINE_GUARD_COND(xe_pm_runtime, _ioctl, xe_pm_runtime_get_ioctl(_T), _RET >= 0)
+
+/*
+ * Used when a function needs to release runtime PM in all possible cases
+ * and error paths, but the wakeref was already acquired by a different
+ * function (i.e., get() has already happened so only a put() is needed).
+ */
+DEFINE_GUARD(xe_pm_runtime_release_only, struct xe_device *,
+	     __xe_pm_runtime_noop(_T), xe_pm_runtime_put(_T));
+
+#endif