1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright (C) 2014 NVIDIA Corporation
4 */
5
6#ifndef __SOC_TEGRA_PM_H__
7#define __SOC_TEGRA_PM_H__
8
9#include <linux/errno.h>
10
11enum tegra_suspend_mode {
12 TEGRA_SUSPEND_NONE = 0,
13 TEGRA_SUSPEND_LP2, /* CPU voltage off */
14 TEGRA_SUSPEND_LP1, /* CPU voltage off, DRAM self-refresh */
15 TEGRA_SUSPEND_LP0, /* CPU + core voltage off, DRAM self-refresh */
16 TEGRA_MAX_SUSPEND_MODE,
17 TEGRA_SUSPEND_NOT_READY,
18};
19
20#if defined(CONFIG_PM_SLEEP) && defined(CONFIG_ARM) && defined(CONFIG_ARCH_TEGRA)
21enum tegra_suspend_mode
22tegra_pm_validate_suspend_mode(enum tegra_suspend_mode mode);
23
24/* low-level resume entry point */
25void tegra_resume(void);
26
27int tegra30_pm_secondary_cpu_suspend(unsigned long arg);
28void tegra_pm_clear_cpu_in_lp2(void);
29void tegra_pm_set_cpu_in_lp2(void);
30int tegra_pm_enter_lp2(void);
31int tegra_pm_park_secondary_cpu(unsigned long cpu);
32void tegra_pm_init_suspend(void);
33#else
34static inline enum tegra_suspend_mode
35tegra_pm_validate_suspend_mode(enum tegra_suspend_mode mode)
36{
37 return TEGRA_SUSPEND_NONE;
38}
39
40static inline void tegra_resume(void)
41{
42}
43
44static inline int tegra30_pm_secondary_cpu_suspend(unsigned long arg)
45{
46 return -ENOTSUPP;
47}
48
49static inline void tegra_pm_clear_cpu_in_lp2(void)
50{
51}
52
53static inline void tegra_pm_set_cpu_in_lp2(void)
54{
55}
56
57static inline int tegra_pm_enter_lp2(void)
58{
59 return -ENOTSUPP;
60}
61
62static inline int tegra_pm_park_secondary_cpu(unsigned long cpu)
63{
64 return -ENOTSUPP;
65}
66
67static inline void tegra_pm_init_suspend(void)
68{
69}
70#endif /* CONFIG_PM_SLEEP */
71
72#endif /* __SOC_TEGRA_PM_H__ */
73

source code of linux/include/soc/tegra/pm.h