Line data    Source code

       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         580 :         if (!dev->power.early_init) {
       7         580 :                 spin_lock_init(&dev->power.lock);
       8         580 :                 dev->power.qos = NULL;
       9         580 :                 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           0 :         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           0 :         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         580 : static inline void device_pm_init(struct device *dev)
     165             : {
     166         580 :         device_pm_init_common(dev);
     167         580 :         device_pm_sleep_init(dev);
     168         580 :         pm_runtime_init(dev);
     169         580 : }