Merge tag 'tags/bcm2835-dt-next-2020-03-27' into devicetree/next
[linux-2.6-microblaze.git] / include / soc / tegra / pm.h
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 };
18
19 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_ARM)
20 enum tegra_suspend_mode
21 tegra_pm_validate_suspend_mode(enum tegra_suspend_mode mode);
22
23 /* low-level resume entry point */
24 void tegra_resume(void);
25
26 int tegra30_pm_secondary_cpu_suspend(unsigned long arg);
27 void tegra_pm_clear_cpu_in_lp2(void);
28 void tegra_pm_set_cpu_in_lp2(void);
29 int tegra_pm_enter_lp2(void);
30 int tegra_pm_park_secondary_cpu(unsigned long cpu);
31 #else
32 static inline enum tegra_suspend_mode
33 tegra_pm_validate_suspend_mode(enum tegra_suspend_mode mode)
34 {
35         return TEGRA_SUSPEND_NONE;
36 }
37
38 static inline void tegra_resume(void)
39 {
40 }
41
42 static inline int tegra30_pm_secondary_cpu_suspend(unsigned long arg)
43 {
44         return -ENOTSUPP;
45 }
46
47 static inline void tegra_pm_clear_cpu_in_lp2(void)
48 {
49 }
50
51 static inline void tegra_pm_set_cpu_in_lp2(void)
52 {
53 }
54
55 static inline int tegra_pm_enter_lp2(void)
56 {
57         return -ENOTSUPP;
58 }
59
60 static inline int tegra_pm_park_secondary_cpu(unsigned long cpu)
61 {
62         return -ENOTSUPP;
63 }
64 #endif /* CONFIG_PM_SLEEP */
65
66 #endif /* __SOC_TEGRA_PM_H__ */