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__ */ 67