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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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bed2b42d9f
Runtime PM helper functions, like pm_runtime_get_sync(), cannot be called by early platform device drivers, because the devices' power management locks are not initialized at that time. This is quite inconvenient, so modify early_platform_add_devices() to initialize the devices power management locks as appropriate and make sure that they won't be initialized more than once if an early platform device is going to be used as a regular one later. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
110 lines
2.9 KiB
C
110 lines
2.9 KiB
C
#include <linux/pm_qos.h>
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static inline void device_pm_init_common(struct device *dev)
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{
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if (!dev->power.early_init) {
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spin_lock_init(&dev->power.lock);
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dev->power.power_state = PMSG_INVALID;
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dev->power.early_init = true;
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}
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}
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#ifdef CONFIG_PM_RUNTIME
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static inline void pm_runtime_early_init(struct device *dev)
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{
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dev->power.disable_depth = 1;
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device_pm_init_common(dev);
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}
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extern void pm_runtime_init(struct device *dev);
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extern void pm_runtime_remove(struct device *dev);
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#else /* !CONFIG_PM_RUNTIME */
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static inline void pm_runtime_early_init(struct device *dev)
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{
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device_pm_init_common(dev);
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}
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static inline void pm_runtime_init(struct device *dev) {}
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static inline void pm_runtime_remove(struct device *dev) {}
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#endif /* !CONFIG_PM_RUNTIME */
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#ifdef CONFIG_PM_SLEEP
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/* kernel/power/main.c */
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extern int pm_async_enabled;
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/* drivers/base/power/main.c */
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extern struct list_head dpm_list; /* The active device list */
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static inline struct device *to_device(struct list_head *entry)
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{
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return container_of(entry, struct device, power.entry);
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}
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extern void device_pm_sleep_init(struct device *dev);
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extern void device_pm_add(struct device *);
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extern void device_pm_remove(struct device *);
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extern void device_pm_move_before(struct device *, struct device *);
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extern void device_pm_move_after(struct device *, struct device *);
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extern void device_pm_move_last(struct device *);
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#else /* !CONFIG_PM_SLEEP */
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static inline void device_pm_sleep_init(struct device *dev) {}
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static inline void device_pm_add(struct device *dev)
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{
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dev_pm_qos_constraints_init(dev);
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}
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static inline void device_pm_remove(struct device *dev)
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{
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dev_pm_qos_constraints_destroy(dev);
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pm_runtime_remove(dev);
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}
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static inline void device_pm_move_before(struct device *deva,
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struct device *devb) {}
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static inline void device_pm_move_after(struct device *deva,
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struct device *devb) {}
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static inline void device_pm_move_last(struct device *dev) {}
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#endif /* !CONFIG_PM_SLEEP */
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static inline void device_pm_init(struct device *dev)
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{
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device_pm_init_common(dev);
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device_pm_sleep_init(dev);
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pm_runtime_init(dev);
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}
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#ifdef CONFIG_PM
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/*
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* sysfs.c
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*/
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extern int dpm_sysfs_add(struct device *dev);
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extern void dpm_sysfs_remove(struct device *dev);
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extern void rpm_sysfs_remove(struct device *dev);
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extern int wakeup_sysfs_add(struct device *dev);
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extern void wakeup_sysfs_remove(struct device *dev);
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extern int pm_qos_sysfs_add(struct device *dev);
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extern void pm_qos_sysfs_remove(struct device *dev);
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#else /* CONFIG_PM */
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static inline int dpm_sysfs_add(struct device *dev) { return 0; }
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static inline void dpm_sysfs_remove(struct device *dev) {}
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static inline void rpm_sysfs_remove(struct device *dev) {}
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static inline int wakeup_sysfs_add(struct device *dev) { return 0; }
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static inline void wakeup_sysfs_remove(struct device *dev) {}
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static inline int pm_qos_sysfs_add(struct device *dev) { return 0; }
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static inline void pm_qos_sysfs_remove(struct device *dev) {}
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#endif
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