1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #include <linux/pm_qos.h> 3 4 static inline void device_pm_init_common(struct device *dev) 5 { 6 if (!dev->power.early_init) { 7 spin_lock_init(&dev->power.lock); 8 dev->power.qos = NULL; 9 dev->power.early_init = true; 10 } 11 } 12 13 #ifdef CONFIG_PM 14 15 static inline void pm_runtime_early_init(struct device *dev) 16 { 17 dev->power.disable_depth = 1; 18 device_pm_init_common(dev); 19 } 20 21 extern void pm_runtime_init(struct device *dev); 22 extern void pm_runtime_reinit(struct device *dev); 23 extern void pm_runtime_remove(struct device *dev); 24 extern u64 pm_runtime_active_time(struct device *dev); 25 26 #define WAKE_IRQ_DEDICATED_ALLOCATED BIT(0) 27 #define WAKE_IRQ_DEDICATED_MANAGED BIT(1) 28 #define WAKE_IRQ_DEDICATED_REVERSE BIT(2) 29 #define WAKE_IRQ_DEDICATED_MASK (WAKE_IRQ_DEDICATED_ALLOCATED | \ 30 WAKE_IRQ_DEDICATED_MANAGED | \ 31 WAKE_IRQ_DEDICATED_REVERSE) 32 #define WAKE_IRQ_DEDICATED_ENABLED BIT(3) 33 34 struct wake_irq { 35 struct device *dev; 36 unsigned int status; 37 int irq; 38 const char *name; 39 }; 40 41 extern void dev_pm_arm_wake_irq(struct wake_irq *wirq); 42 extern void dev_pm_disarm_wake_irq(struct wake_irq *wirq); 43 extern void dev_pm_enable_wake_irq_check(struct device *dev, 44 bool can_change_status); 45 extern void dev_pm_disable_wake_irq_check(struct device *dev, bool cond_disable); 46 extern void dev_pm_enable_wake_irq_complete(struct device *dev); 47 48 #ifdef CONFIG_PM_SLEEP 49 50 extern void device_wakeup_attach_irq(struct device *dev, struct wake_irq *wakeirq); 51 extern void device_wakeup_detach_irq(struct device *dev); 52 extern void device_wakeup_arm_wake_irqs(void); 53 extern void device_wakeup_disarm_wake_irqs(void); 54 55 #else 56 57 static inline void device_wakeup_attach_irq(struct device *dev, 58 struct wake_irq *wakeirq) {} 59 60 static inline void device_wakeup_detach_irq(struct device *dev) 61 { 62 } 63 64 #endif /* CONFIG_PM_SLEEP */ 65 66 /* 67 * sysfs.c 68 */ 69 70 extern int dpm_sysfs_add(struct device *dev); 71 extern void dpm_sysfs_remove(struct device *dev); 72 extern void rpm_sysfs_remove(struct device *dev); 73 extern int wakeup_sysfs_add(struct device *dev); 74 extern void wakeup_sysfs_remove(struct device *dev); 75 extern int pm_qos_sysfs_add_resume_latency(struct device *dev); 76 extern void pm_qos_sysfs_remove_resume_latency(struct device *dev); 77 extern int pm_qos_sysfs_add_flags(struct device *dev); 78 extern void pm_qos_sysfs_remove_flags(struct device *dev); 79 extern int pm_qos_sysfs_add_latency_tolerance(struct device *dev); 80 extern void pm_qos_sysfs_remove_latency_tolerance(struct device *dev); 81 extern int dpm_sysfs_change_owner(struct device *dev, kuid_t kuid, kgid_t kgid); 82 83 #else /* CONFIG_PM */ 84 85 static inline void pm_runtime_early_init(struct device *dev) 86 { 87 device_pm_init_common(dev); 88 } 89 90 static inline void pm_runtime_init(struct device *dev) {} 91 static inline void pm_runtime_reinit(struct device *dev) {} 92 static inline void pm_runtime_remove(struct device *dev) {} 93 94 static inline int dpm_sysfs_add(struct device *dev) { return 0; } 95 static inline void dpm_sysfs_remove(struct device *dev) {} 96 static inline int dpm_sysfs_change_owner(struct device *dev, kuid_t kuid, 97 kgid_t kgid) { return 0; } 98 99 #endif 100 101 #ifdef CONFIG_PM_SLEEP 102 103 /* kernel/power/main.c */ 104 extern int pm_async_enabled; 105 106 /* drivers/base/power/main.c */ 107 extern struct list_head dpm_list; /* The active device list */ 108 109 static inline struct device *to_device(struct list_head *entry) 110 { 111 return container_of(entry, struct device, power.entry); 112 } 113 114 extern void device_pm_sleep_init(struct device *dev); 115 extern void device_pm_add(struct device *); 116 extern void device_pm_remove(struct device *); 117 extern void device_pm_move_before(struct device *, struct device *); 118 extern void device_pm_move_after(struct device *, struct device *); 119 extern void device_pm_move_last(struct device *); 120 extern void device_pm_check_callbacks(struct device *dev); 121 122 static inline bool device_pm_initialized(struct device *dev) 123 { 124 return dev->power.in_dpm_list; 125 } 126 127 /* drivers/base/power/wakeup_stats.c */ 128 extern int wakeup_source_sysfs_add(struct device *parent, 129 struct wakeup_source *ws); 130 extern void wakeup_source_sysfs_remove(struct wakeup_source *ws); 131 132 extern int pm_wakeup_source_sysfs_add(struct device *parent); 133 134 #else /* !CONFIG_PM_SLEEP */ 135 136 static inline void device_pm_sleep_init(struct device *dev) {} 137 138 static inline void device_pm_add(struct device *dev) {} 139 140 static inline void device_pm_remove(struct device *dev) 141 { 142 pm_runtime_remove(dev); 143 } 144 145 static inline void device_pm_move_before(struct device *deva, 146 struct device *devb) {} 147 static inline void device_pm_move_after(struct device *deva, 148 struct device *devb) {} 149 static inline void device_pm_move_last(struct device *dev) {} 150 151 static inline void device_pm_check_callbacks(struct device *dev) {} 152 153 static inline bool device_pm_initialized(struct device *dev) 154 { 155 return device_is_registered(dev); 156 } 157 158 static inline int pm_wakeup_source_sysfs_add(struct device *parent) 159 { 160 return 0; 161 } 162 163 #endif /* !CONFIG_PM_SLEEP */ 164 165 static inline void device_pm_init(struct device *dev) 166 { 167 device_pm_init_common(dev); 168 device_pm_sleep_init(dev); 169 pm_runtime_init(dev); 170 } 171