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__ */