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 25 #define WAKE_IRQ_DEDICATED_ALLOCATED BIT(0) 26 #define WAKE_IRQ_DEDICATED_MANAGED BIT(1) 27 #define WAKE_IRQ_DEDICATED_MASK (WAKE_IRQ_DEDICATED_ALLOCATED | \ 28 WAKE_IRQ_DEDICATED_MANAGED) 29 30 struct wake_irq { 31 struct device *dev; 32 unsigned int status; 33 int irq; 34 const char *name; 35 }; 36 37 extern void dev_pm_arm_wake_irq(struct wake_irq *wirq); 38 extern void dev_pm_disarm_wake_irq(struct wake_irq *wirq); 39 extern void dev_pm_enable_wake_irq_check(struct device *dev, 40 bool can_change_status); 41 extern void dev_pm_disable_wake_irq_check(struct device *dev); 42 43 #ifdef CONFIG_PM_SLEEP 44 45 extern void device_wakeup_attach_irq(struct device *dev, struct wake_irq *wakeirq); 46 extern void device_wakeup_detach_irq(struct device *dev); 47 extern void device_wakeup_arm_wake_irqs(void); 48 extern void device_wakeup_disarm_wake_irqs(void); 49 50 #else 51 52 static inline void device_wakeup_attach_irq(struct device *dev, 53 struct wake_irq *wakeirq) {} 54 55 static inline void device_wakeup_detach_irq(struct device *dev) 56 { 57 } 58 59 static inline void device_wakeup_arm_wake_irqs(void) 60 { 61 } 62 63 static inline void device_wakeup_disarm_wake_irqs(void) 64 { 65 } 66 67 #endif /* CONFIG_PM_SLEEP */ 68 69 /* 70 * sysfs.c 71 */ 72 73 extern int dpm_sysfs_add(struct device *dev); 74 extern void dpm_sysfs_remove(struct device *dev); 75 extern void rpm_sysfs_remove(struct device *dev); 76 extern int wakeup_sysfs_add(struct device *dev); 77 extern void wakeup_sysfs_remove(struct device *dev); 78 extern int pm_qos_sysfs_add_resume_latency(struct device *dev); 79 extern void pm_qos_sysfs_remove_resume_latency(struct device *dev); 80 extern int pm_qos_sysfs_add_flags(struct device *dev); 81 extern void pm_qos_sysfs_remove_flags(struct device *dev); 82 extern int pm_qos_sysfs_add_latency_tolerance(struct device *dev); 83 extern void pm_qos_sysfs_remove_latency_tolerance(struct device *dev); 84 85 #else /* CONFIG_PM */ 86 87 static inline void pm_runtime_early_init(struct device *dev) 88 { 89 device_pm_init_common(dev); 90 } 91 92 static inline void pm_runtime_init(struct device *dev) {} 93 static inline void pm_runtime_reinit(struct device *dev) {} 94 static inline void pm_runtime_remove(struct device *dev) {} 95 96 static inline int dpm_sysfs_add(struct device *dev) { return 0; } 97 static inline void dpm_sysfs_remove(struct device *dev) {} 98 static inline void rpm_sysfs_remove(struct device *dev) {} 99 static inline int wakeup_sysfs_add(struct device *dev) { return 0; } 100 static inline void wakeup_sysfs_remove(struct device *dev) {} 101 static inline int pm_qos_sysfs_add(struct device *dev) { return 0; } 102 static inline void pm_qos_sysfs_remove(struct device *dev) {} 103 104 static inline void dev_pm_arm_wake_irq(struct wake_irq *wirq) 105 { 106 } 107 108 static inline void dev_pm_disarm_wake_irq(struct wake_irq *wirq) 109 { 110 } 111 112 static inline void dev_pm_enable_wake_irq_check(struct device *dev, 113 bool can_change_status) 114 { 115 } 116 117 static inline void dev_pm_disable_wake_irq_check(struct device *dev) 118 { 119 } 120 121 #endif 122 123 #ifdef CONFIG_PM_SLEEP 124 125 /* kernel/power/main.c */ 126 extern int pm_async_enabled; 127 128 /* drivers/base/power/main.c */ 129 extern struct list_head dpm_list; /* The active device list */ 130 131 static inline struct device *to_device(struct list_head *entry) 132 { 133 return container_of(entry, struct device, power.entry); 134 } 135 136 extern void device_pm_sleep_init(struct device *dev); 137 extern void device_pm_add(struct device *); 138 extern void device_pm_remove(struct device *); 139 extern void device_pm_move_before(struct device *, struct device *); 140 extern void device_pm_move_after(struct device *, struct device *); 141 extern void device_pm_move_last(struct device *); 142 extern void device_pm_check_callbacks(struct device *dev); 143 144 static inline bool device_pm_initialized(struct device *dev) 145 { 146 return dev->power.in_dpm_list; 147 } 148 149 #else /* !CONFIG_PM_SLEEP */ 150 151 static inline void device_pm_sleep_init(struct device *dev) {} 152 153 static inline void device_pm_add(struct device *dev) {} 154 155 static inline void device_pm_remove(struct device *dev) 156 { 157 pm_runtime_remove(dev); 158 } 159 160 static inline void device_pm_move_before(struct device *deva, 161 struct device *devb) {} 162 static inline void device_pm_move_after(struct device *deva, 163 struct device *devb) {} 164 static inline void device_pm_move_last(struct device *dev) {} 165 166 static inline void device_pm_check_callbacks(struct device *dev) {} 167 168 static inline bool device_pm_initialized(struct device *dev) 169 { 170 return device_is_registered(dev); 171 } 172 173 #endif /* !CONFIG_PM_SLEEP */ 174 175 static inline void device_pm_init(struct device *dev) 176 { 177 device_pm_init_common(dev); 178 device_pm_sleep_init(dev); 179 pm_runtime_init(dev); 180 } 181