Linux Audio

Check our new training course

Embedded Linux Audio

Check our new training course
with Creative Commons CC-BY-SA
lecture materials

Bootlin logo

Elixir Cross Referencer

Open Menu / drivers / gpu / drm / i915 / gt / intel_gt_pm.h
Loading...
  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
/* 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_untracked(struct intel_gt *gt)
{
	intel_wakeref_get(&gt->wakeref);
}

static inline intel_wakeref_t intel_gt_pm_get(struct intel_gt *gt)
{
	intel_gt_pm_get_untracked(gt);
	return intel_wakeref_track(&gt->wakeref);
}

static inline void __intel_gt_pm_get(struct intel_gt *gt)
{
	__intel_wakeref_get(&gt->wakeref);
}

static inline intel_wakeref_t intel_gt_pm_get_if_awake(struct intel_gt *gt)
{
	if (!intel_wakeref_get_if_active(&gt->wakeref))
		return 0;

	return intel_wakeref_track(&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_untracked(struct intel_gt *gt)
{
	intel_wakeref_put(&gt->wakeref);
}

static inline void intel_gt_pm_put(struct intel_gt *gt, intel_wakeref_t handle)
{
	intel_wakeref_untrack(&gt->wakeref, handle);
	intel_gt_pm_put_untracked(gt);
}

static inline void intel_gt_pm_put_async_untracked(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);
}

static inline void intel_gt_pm_put_async(struct intel_gt *gt, intel_wakeref_t handle)
{
	intel_wakeref_untrack(&gt->wakeref, handle);
	intel_gt_pm_put_async_untracked(gt);
}

#define with_intel_gt_pm(gt, wf) \
	for (wf = intel_gt_pm_get(gt); wf; intel_gt_pm_put(gt, wf), wf = 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), 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_resume_early(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 */