Line data    Source code

       1             : /* SPDX-License-Identifier: GPL-2.0 */
       2             : #include <linux/pm_qos.h>
       3             : 
       4         176 : static inline void device_pm_init_common(struct device *dev)
       5             : {
       6         176 :         if (!dev->power.early_init) {
       7         176 :                 spin_lock_init(&dev->power.lock);
       8         176 :                 dev->power.qos = NULL;
       9         176 :                 dev->power.early_init = true;
      10             :         }
      11         176 : }
      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_MASK         (WAKE_IRQ_DEDICATED_ALLOCATED | \
      29             :                                          WAKE_IRQ_DEDICATED_MANAGED)
      30             : 
      31             : struct wake_irq {
      32             :         struct device *dev;
      33             :         unsigned int status;
      34             :         int irq;
      35             :         const char *name;
      36             : };
      37             : 
      38             : extern void dev_pm_arm_wake_irq(struct wake_irq *wirq);
      39             : extern void dev_pm_disarm_wake_irq(struct wake_irq *wirq);
      40             : extern void dev_pm_enable_wake_irq_check(struct device *dev,
      41             :                                          bool can_change_status);
      42             : extern void dev_pm_disable_wake_irq_check(struct device *dev);
      43             : 
      44             : #ifdef CONFIG_PM_SLEEP
      45             : 
      46             : extern void device_wakeup_attach_irq(struct device *dev, struct wake_irq *wakeirq);
      47             : extern void device_wakeup_detach_irq(struct device *dev);
      48             : extern void device_wakeup_arm_wake_irqs(void);
      49             : extern void device_wakeup_disarm_wake_irqs(void);
      50             : 
      51             : #else
      52             : 
      53             : static inline void device_wakeup_attach_irq(struct device *dev,
      54             :                                             struct wake_irq *wakeirq) {}
      55             : 
      56             : static inline void device_wakeup_detach_irq(struct device *dev)
      57             : {
      58             : }
      59             : 
      60             : #endif /* CONFIG_PM_SLEEP */
      61             : 
      62             : /*
      63             :  * sysfs.c
      64             :  */
      65             : 
      66             : extern int dpm_sysfs_add(struct device *dev);
      67             : extern void dpm_sysfs_remove(struct device *dev);
      68             : extern void rpm_sysfs_remove(struct device *dev);
      69             : extern int wakeup_sysfs_add(struct device *dev);
      70             : extern void wakeup_sysfs_remove(struct device *dev);
      71             : extern int pm_qos_sysfs_add_resume_latency(struct device *dev);
      72             : extern void pm_qos_sysfs_remove_resume_latency(struct device *dev);
      73             : extern int pm_qos_sysfs_add_flags(struct device *dev);
      74             : extern void pm_qos_sysfs_remove_flags(struct device *dev);
      75             : extern int pm_qos_sysfs_add_latency_tolerance(struct device *dev);
      76             : extern void pm_qos_sysfs_remove_latency_tolerance(struct device *dev);
      77             : extern int dpm_sysfs_change_owner(struct device *dev, kuid_t kuid, kgid_t kgid);
      78             : 
      79             : #else /* CONFIG_PM */
      80             : 
      81             : static inline void pm_runtime_early_init(struct device *dev)
      82             : {
      83             :         device_pm_init_common(dev);
      84             : }
      85             : 
      86         176 : static inline void pm_runtime_init(struct device *dev) {}
      87           1 : static inline void pm_runtime_reinit(struct device *dev) {}
      88           0 : static inline void pm_runtime_remove(struct device *dev) {}
      89             : 
      90         175 : static inline int dpm_sysfs_add(struct device *dev) { return 0; }
      91           0 : static inline void dpm_sysfs_remove(struct device *dev) {}
      92           0 : static inline int dpm_sysfs_change_owner(struct device *dev, kuid_t kuid,
      93           0 :                                          kgid_t kgid) { return 0; }
      94             : 
      95             : #endif
      96             : 
      97             : #ifdef CONFIG_PM_SLEEP
      98             : 
      99             : /* kernel/power/main.c */
     100             : extern int pm_async_enabled;
     101             : 
     102             : /* drivers/base/power/main.c */
     103             : extern struct list_head dpm_list;       /* The active device list */
     104             : 
     105             : static inline struct device *to_device(struct list_head *entry)
     106             : {
     107             :         return container_of(entry, struct device, power.entry);
     108             : }
     109             : 
     110             : extern void device_pm_sleep_init(struct device *dev);
     111             : extern void device_pm_add(struct device *);
     112             : extern void device_pm_remove(struct device *);
     113             : extern void device_pm_move_before(struct device *, struct device *);
     114             : extern void device_pm_move_after(struct device *, struct device *);
     115             : extern void device_pm_move_last(struct device *);
     116             : extern void device_pm_check_callbacks(struct device *dev);
     117             : 
     118             : static inline bool device_pm_initialized(struct device *dev)
     119             : {
     120             :         return dev->power.in_dpm_list;
     121             : }
     122             : 
     123             : /* drivers/base/power/wakeup_stats.c */
     124             : extern int wakeup_source_sysfs_add(struct device *parent,
     125             :                                    struct wakeup_source *ws);
     126             : extern void wakeup_source_sysfs_remove(struct wakeup_source *ws);
     127             : 
     128             : extern int pm_wakeup_source_sysfs_add(struct device *parent);
     129             : 
     130             : #else /* !CONFIG_PM_SLEEP */
     131             : 
     132         176 : static inline void device_pm_sleep_init(struct device *dev) {}
     133             : 
     134         175 : static inline void device_pm_add(struct device *dev) {}
     135             : 
     136           0 : static inline void device_pm_remove(struct device *dev)
     137             : {
     138           0 :         pm_runtime_remove(dev);
     139             : }
     140             : 
     141           0 : static inline void device_pm_move_before(struct device *deva,
     142           0 :                                          struct device *devb) {}
     143           0 : static inline void device_pm_move_after(struct device *deva,
     144           0 :                                         struct device *devb) {}
     145           0 : static inline void device_pm_move_last(struct device *dev) {}
     146             : 
     147           5 : static inline void device_pm_check_callbacks(struct device *dev) {}
     148             : 
     149           0 : static inline bool device_pm_initialized(struct device *dev)
     150             : {
     151           0 :         return device_is_registered(dev);
     152             : }
     153             : 
     154             : static inline int pm_wakeup_source_sysfs_add(struct device *parent)
     155             : {
     156             :         return 0;
     157             : }
     158             : 
     159             : #endif /* !CONFIG_PM_SLEEP */
     160             : 
     161         176 : static inline void device_pm_init(struct device *dev)
     162             : {
     163         176 :         device_pm_init_common(dev);
     164         176 :         device_pm_sleep_init(dev);
     165         176 :         pm_runtime_init(dev);
     166             : }