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
11 enum 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)
21 enum tegra_suspend_mode
22 tegra_pm_validate_suspend_mode(enum tegra_suspend_mode mode);
23
24 /* low-level resume entry point */
25 void tegra_resume(void);
26
27 int tegra30_pm_secondary_cpu_suspend(unsigned long arg);
28 void tegra_pm_clear_cpu_in_lp2(void);
29 void tegra_pm_set_cpu_in_lp2(void);
30 int tegra_pm_enter_lp2(void);
31 int tegra_pm_park_secondary_cpu(unsigned long cpu);
32 void tegra_pm_init_suspend(void);
33 #else
34 static inline enum tegra_suspend_mode
35 tegra_pm_validate_suspend_mode(enum tegra_suspend_mode mode)
36 {
37 return TEGRA_SUSPEND_NONE;
38 }
39
40 static inline void tegra_resume(void)
41 {
42 }
43
44 static inline int tegra30_pm_secondary_cpu_suspend(unsigned long arg)
45 {
46 return -ENOTSUPP;
47 }
48
49 static inline void tegra_pm_clear_cpu_in_lp2(void)
50 {
51 }
52
53 static inline void tegra_pm_set_cpu_in_lp2(void)
54 {
55 }
56
57 static inline int tegra_pm_enter_lp2(void)
58 {
59 return -ENOTSUPP;
60 }
61
62 static inline int tegra_pm_park_secondary_cpu(unsigned long cpu)
63 {
64 return -ENOTSUPP;
65 }
66
67 static inline void tegra_pm_init_suspend(void)
68 {
69 }
70 #endif /* CONFIG_PM_SLEEP */
71
72 #endif /* __SOC_TEGRA_PM_H__ */
73
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