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 33 struct wake_irq { 34 struct device *dev; 35 unsigned int status; 36 int irq; 37 const char *name; 38 }; 39 40 extern void dev_pm_arm_wake_irq(struct wake_irq *wirq); 41 extern void dev_pm_disarm_wake_irq(struct wake_irq *wirq); 42 extern void dev_pm_enable_wake_irq_check(struct device *dev, 43 bool can_change_status); 44 extern void dev_pm_disable_wake_irq_check(struct device *dev, bool cond_disable); 45 extern void dev_pm_enable_wake_irq_complete(struct device *dev); 46 47 #ifdef CONFIG_PM_SLEEP 48 49 extern void device_wakeup_attach_irq(struct device *dev, struct wake_irq *wakeirq); 50 extern void device_wakeup_detach_irq(struct device *dev); 51 extern void device_wakeup_arm_wake_irqs(void); 52 extern void device_wakeup_disarm_wake_irqs(void); 53 54 #else 55 56 static inline void device_wakeup_attach_irq(struct device *dev, 57 struct wake_irq *wakeirq) {} 58 59 static inline void device_wakeup_detach_irq(struct device *dev) 60 { 61 } 62 63 #endif /* CONFIG_PM_SLEEP */ 64 65 /* 66 * sysfs.c 67 */ 68 69 extern int dpm_sysfs_add(struct device *dev); 70 extern void dpm_sysfs_remove(struct device *dev); 71 extern void rpm_sysfs_remove(struct device *dev); 72 extern int wakeup_sysfs_add(struct device *dev); 73 extern void wakeup_sysfs_remove(struct device *dev); 74 extern int pm_qos_sysfs_add_resume_latency(struct device *dev); 75 extern void pm_qos_sysfs_remove_resume_latency(struct device *dev); 76 extern int pm_qos_sysfs_add_flags(struct device *dev); 77 extern void pm_qos_sysfs_remove_flags(struct device *dev); 78 extern int pm_qos_sysfs_add_latency_tolerance(struct device *dev); 79 extern void pm_qos_sysfs_remove_latency_tolerance(struct device *dev); 80 extern int dpm_sysfs_change_owner(struct device *dev, kuid_t kuid, kgid_t kgid); 81 82 #else /* CONFIG_PM */ 83 84 static inline void pm_runtime_early_init(struct device *dev) 85 { 86 device_pm_init_common(dev); 87 } 88 89 static inline void pm_runtime_init(struct device *dev) {} 90 static inline void pm_runtime_reinit(struct device *dev) {} 91 static inline void pm_runtime_remove(struct device *dev) {} 92 93 static inline int dpm_sysfs_add(struct device *dev) { return 0; } 94 static inline void dpm_sysfs_remove(struct device *dev) {} 95 static inline int dpm_sysfs_change_owner(struct device *dev, kuid_t kuid, 96 kgid_t kgid) { return 0; } 97 98 #endif 99 100 #ifdef CONFIG_PM_SLEEP 101 102 /* kernel/power/main.c */ 103 extern int pm_async_enabled; 104 105 /* drivers/base/power/main.c */ 106 extern struct list_head dpm_list; /* The active device list */ 107 108 static inline struct device *to_device(struct list_head *entry) 109 { 110 return container_of(entry, struct device, power.entry); 111 } 112 113 extern void device_pm_sleep_init(struct device *dev); 114 extern void device_pm_add(struct device *); 115 extern void device_pm_remove(struct device *); 116 extern void device_pm_move_before(struct device *, struct device *); 117 extern void device_pm_move_after(struct device *, struct device *); 118 extern void device_pm_move_last(struct device *); 119 extern void device_pm_check_callbacks(struct device *dev); 120 121 static inline bool device_pm_initialized(struct device *dev) 122 { 123 return dev->power.in_dpm_list; 124 } 125 126 /* drivers/base/power/wakeup_stats.c */ 127 extern int wakeup_source_sysfs_add(struct device *parent, 128 struct wakeup_source *ws); 129 extern void wakeup_source_sysfs_remove(struct wakeup_source *ws); 130 131 extern int pm_wakeup_source_sysfs_add(struct device *parent); 132 133 #else /* !CONFIG_PM_SLEEP */ 134 135 static inline void device_pm_sleep_init(struct device *dev) {} 136 137 static inline void device_pm_add(struct device *dev) {} 138 139 static inline void device_pm_remove(struct device *dev) 140 { 141 pm_runtime_remove(dev); 142 } 143 144 static inline void device_pm_move_before(struct device *deva, 145 struct device *devb) {} 146 static inline void device_pm_move_after(struct device *deva, 147 struct device *devb) {} 148 static inline void device_pm_move_last(struct device *dev) {} 149 150 static inline void device_pm_check_callbacks(struct device *dev) {} 151 152 static inline bool device_pm_initialized(struct device *dev) 153 { 154 return device_is_registered(dev); 155 } 156 157 static inline int pm_wakeup_source_sysfs_add(struct device *parent) 158 { 159 return 0; 160 } 161 162 #endif /* !CONFIG_PM_SLEEP */ 163 164 static inline void device_pm_init(struct device *dev) 165 { 166 device_pm_init_common(dev); 167 device_pm_sleep_init(dev); 168 pm_runtime_init(dev); 169 } 170