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}; 18 19#if defined(CONFIG_PM_SLEEP) && defined(CONFIG_ARM) 20enum tegra_suspend_mode 21tegra_pm_validate_suspend_mode(enum tegra_suspend_mode mode); 22 23/* low-level resume entry point */ 24void tegra_resume(void); 25 26int tegra30_pm_secondary_cpu_suspend(unsigned long arg); 27void tegra_pm_clear_cpu_in_lp2(void); 28void tegra_pm_set_cpu_in_lp2(void); 29int tegra_pm_enter_lp2(void); 30int tegra_pm_park_secondary_cpu(unsigned long cpu); 31#else 32static inline enum tegra_suspend_mode 33tegra_pm_validate_suspend_mode(enum tegra_suspend_mode mode) 34{ 35 return TEGRA_SUSPEND_NONE; 36} 37 38static inline void tegra_resume(void) 39{ 40} 41 42static inline int tegra30_pm_secondary_cpu_suspend(unsigned long arg) 43{ 44 return -ENOTSUPP; 45} 46 47static inline void tegra_pm_clear_cpu_in_lp2(void) 48{ 49} 50 51static inline void tegra_pm_set_cpu_in_lp2(void) 52{ 53} 54 55static inline int tegra_pm_enter_lp2(void) 56{ 57 return -ENOTSUPP; 58} 59 60static 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__ */ 67