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[linux.git] / drivers / gpu / drm / i915 / gt / intel_gt_pm.h
1 /* SPDX-License-Identifier: MIT */
2 /*
3  * Copyright © 2019 Intel Corporation
4  */
5
6 #ifndef INTEL_GT_PM_H
7 #define INTEL_GT_PM_H
8
9 #include <linux/types.h>
10
11 #include "intel_gt_types.h"
12 #include "intel_wakeref.h"
13
14 static inline bool intel_gt_pm_is_awake(const struct intel_gt *gt)
15 {
16         return intel_wakeref_is_active(&gt->wakeref);
17 }
18
19 static inline void intel_gt_pm_get(struct intel_gt *gt)
20 {
21         intel_wakeref_get(&gt->wakeref);
22 }
23
24 static inline void __intel_gt_pm_get(struct intel_gt *gt)
25 {
26         __intel_wakeref_get(&gt->wakeref);
27 }
28
29 static inline bool intel_gt_pm_get_if_awake(struct intel_gt *gt)
30 {
31         return intel_wakeref_get_if_active(&gt->wakeref);
32 }
33
34 static inline void intel_gt_pm_might_get(struct intel_gt *gt)
35 {
36         intel_wakeref_might_get(&gt->wakeref);
37 }
38
39 static inline void intel_gt_pm_put(struct intel_gt *gt)
40 {
41         intel_wakeref_put(&gt->wakeref);
42 }
43
44 static inline void intel_gt_pm_put_async(struct intel_gt *gt)
45 {
46         intel_wakeref_put_async(&gt->wakeref);
47 }
48
49 static inline void intel_gt_pm_might_put(struct intel_gt *gt)
50 {
51         intel_wakeref_might_put(&gt->wakeref);
52 }
53
54 #define with_intel_gt_pm(gt, tmp) \
55         for (tmp = 1, intel_gt_pm_get(gt); tmp; \
56              intel_gt_pm_put(gt), tmp = 0)
57
58 /**
59  * with_intel_gt_pm_if_awake - if GT is PM awake, get a reference to prevent
60  *      it to sleep, run some code and then asynchrously put the reference
61  *      away.
62  *
63  * @gt: pointer to the gt
64  * @wf: pointer to a temporary wakeref.
65  */
66 #define with_intel_gt_pm_if_awake(gt, wf) \
67         for (wf = intel_gt_pm_get_if_awake(gt); wf; intel_gt_pm_put_async(gt), wf = 0)
68
69 static inline int intel_gt_pm_wait_for_idle(struct intel_gt *gt)
70 {
71         return intel_wakeref_wait_for_idle(&gt->wakeref);
72 }
73
74 void intel_gt_pm_init_early(struct intel_gt *gt);
75 void intel_gt_pm_init(struct intel_gt *gt);
76 void intel_gt_pm_fini(struct intel_gt *gt);
77
78 void intel_gt_suspend_prepare(struct intel_gt *gt);
79 void intel_gt_suspend_late(struct intel_gt *gt);
80 int intel_gt_resume(struct intel_gt *gt);
81 void intel_gt_resume_early(struct intel_gt *gt);
82
83 void intel_gt_runtime_suspend(struct intel_gt *gt);
84 int intel_gt_runtime_resume(struct intel_gt *gt);
85
86 ktime_t intel_gt_get_awake_time(const struct intel_gt *gt);
87
88 static inline bool is_mock_gt(const struct intel_gt *gt)
89 {
90         return I915_SELFTEST_ONLY(gt->awake == -ENODEV);
91 }
92
93 #endif /* INTEL_GT_PM_H */
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