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__ */ 73