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         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__ */