diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/acpi.h | 30 | ||||
| -rw-r--r-- | include/linux/backlight.h | 7 | ||||
| -rw-r--r-- | include/linux/clk-provider.h | 31 | ||||
| -rw-r--r-- | include/linux/cpufreq.h | 50 | ||||
| -rw-r--r-- | include/linux/devfreq.h | 35 | ||||
| -rw-r--r-- | include/linux/pm.h | 36 | ||||
| -rw-r--r-- | include/linux/pm_opp.h | 20 | ||||
| -rw-r--r-- | include/linux/pm_runtime.h | 6 | ||||
| -rw-r--r-- | include/linux/power_supply.h | 2 | ||||
| -rw-r--r-- | include/linux/suspend.h | 7 |
10 files changed, 193 insertions, 31 deletions
diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 7a8f2cd66c8b..358c01b971db 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -37,6 +37,7 @@ #include <linux/list.h> #include <linux/mod_devicetable.h> +#include <linux/dynamic_debug.h> #include <acpi/acpi.h> #include <acpi/acpi_bus.h> @@ -184,6 +185,8 @@ extern int ec_transaction(u8 command, u8 *rdata, unsigned rdata_len); extern acpi_handle ec_get_handle(void); +extern bool acpi_is_pnp_device(struct acpi_device *); + #if defined(CONFIG_ACPI_WMI) || defined(CONFIG_ACPI_WMI_MODULE) typedef void (*wmi_notify_handler) (u32 value, void *context); @@ -554,14 +557,20 @@ static inline int acpi_subsys_runtime_resume(struct device *dev) { return 0; } int acpi_dev_suspend_late(struct device *dev); int acpi_dev_resume_early(struct device *dev); int acpi_subsys_prepare(struct device *dev); +void acpi_subsys_complete(struct device *dev); int acpi_subsys_suspend_late(struct device *dev); int acpi_subsys_resume_early(struct device *dev); +int acpi_subsys_suspend(struct device *dev); +int acpi_subsys_freeze(struct device *dev); #else static inline int acpi_dev_suspend_late(struct device *dev) { return 0; } static inline int acpi_dev_resume_early(struct device *dev) { return 0; } static inline int acpi_subsys_prepare(struct device *dev) { return 0; } +static inline void acpi_subsys_complete(struct device *dev) {} static inline int acpi_subsys_suspend_late(struct device *dev) { return 0; } static inline int acpi_subsys_resume_early(struct device *dev) { return 0; } +static inline int acpi_subsys_suspend(struct device *dev) { return 0; } +static inline int acpi_subsys_freeze(struct device *dev) { return 0; } #endif #if defined(CONFIG_ACPI) && defined(CONFIG_PM) @@ -589,6 +598,14 @@ static inline __printf(3, 4) void acpi_handle_printk(const char *level, void *handle, const char *fmt, ...) {} #endif /* !CONFIG_ACPI */ +#if defined(CONFIG_ACPI) && defined(CONFIG_DYNAMIC_DEBUG) +__printf(3, 4) +void __acpi_handle_debug(struct _ddebug *descriptor, acpi_handle handle, const char *fmt, ...); +#else +#define __acpi_handle_debug(descriptor, handle, fmt, ...) \ + acpi_handle_printk(KERN_DEBUG, handle, fmt, ##__VA_ARGS__); +#endif + /* * acpi_handle_<level>: Print message with ACPI prefix and object path * @@ -610,11 +627,19 @@ acpi_handle_printk(const char *level, void *handle, const char *fmt, ...) {} #define acpi_handle_info(handle, fmt, ...) \ acpi_handle_printk(KERN_INFO, handle, fmt, ##__VA_ARGS__) -/* REVISIT: Support CONFIG_DYNAMIC_DEBUG when necessary */ -#if defined(DEBUG) || defined(CONFIG_DYNAMIC_DEBUG) +#if defined(DEBUG) #define acpi_handle_debug(handle, fmt, ...) \ acpi_handle_printk(KERN_DEBUG, handle, fmt, ##__VA_ARGS__) #else +#if defined(CONFIG_DYNAMIC_DEBUG) +#define acpi_handle_debug(handle, fmt, ...) \ +do { \ + DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ + if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \ + __acpi_handle_debug(&descriptor, handle, pr_fmt(fmt), \ + ##__VA_ARGS__); \ +} while (0) +#else #define acpi_handle_debug(handle, fmt, ...) \ ({ \ if (0) \ @@ -622,5 +647,6 @@ acpi_handle_printk(const char *level, void *handle, const char *fmt, ...) {} 0; \ }) #endif +#endif #endif /*_LINUX_ACPI_H*/ diff --git a/include/linux/backlight.h b/include/linux/backlight.h index 72647429adf6..adb14a8616df 100644 --- a/include/linux/backlight.h +++ b/include/linux/backlight.h @@ -40,6 +40,11 @@ enum backlight_type { BACKLIGHT_TYPE_MAX, }; +enum backlight_notification { + BACKLIGHT_REGISTERED, + BACKLIGHT_UNREGISTERED, +}; + struct backlight_device; struct fb_info; @@ -133,6 +138,8 @@ extern void devm_backlight_device_unregister(struct device *dev, extern void backlight_force_update(struct backlight_device *bd, enum backlight_update_reason reason); extern bool backlight_device_registered(enum backlight_type type); +extern int backlight_register_notifier(struct notifier_block *nb); +extern int backlight_unregister_notifier(struct notifier_block *nb); #define to_backlight_device(obj) container_of(obj, struct backlight_device, dev) diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h index 511917416fb0..fb4eca6907cd 100644 --- a/include/linux/clk-provider.h +++ b/include/linux/clk-provider.h @@ -413,6 +413,37 @@ struct clk *clk_register_fixed_factor(struct device *dev, const char *name, const char *parent_name, unsigned long flags, unsigned int mult, unsigned int div); +/** + * struct clk_fractional_divider - adjustable fractional divider clock + * + * @hw: handle between common and hardware-specific interfaces + * @reg: register containing the divider + * @mshift: shift to the numerator bit field + * @mwidth: width of the numerator bit field + * @nshift: shift to the denominator bit field + * @nwidth: width of the denominator bit field + * @lock: register lock + * + * Clock with adjustable fractional divider affecting its output frequency. + */ + +struct clk_fractional_divider { + struct clk_hw hw; + void __iomem *reg; + u8 mshift; + u32 mmask; + u8 nshift; + u32 nmask; + u8 flags; + spinlock_t *lock; +}; + +extern const struct clk_ops clk_fractional_divider_ops; +struct clk *clk_register_fractional_divider(struct device *dev, + const char *name, const char *parent_name, unsigned long flags, + void __iomem *reg, u8 mshift, u8 mwidth, u8 nshift, u8 nwidth, + u8 clk_divider_flags, spinlock_t *lock); + /*** * struct clk_composite - aggregate clock of mux, divider and gate clocks * diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index 5ae5100c1f24..3f458896d45c 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -110,6 +110,7 @@ struct cpufreq_policy { bool transition_ongoing; /* Tracks transition status */ spinlock_t transition_lock; wait_queue_head_t transition_wait; + struct task_struct *transition_task; /* Task which is doing the transition */ }; /* Only for ACPI */ @@ -468,6 +469,55 @@ struct cpufreq_frequency_table { * order */ }; +#if defined(CONFIG_CPU_FREQ) && defined(CONFIG_PM_OPP) +int dev_pm_opp_init_cpufreq_table(struct device *dev, + struct cpufreq_frequency_table **table); +void dev_pm_opp_free_cpufreq_table(struct device *dev, + struct cpufreq_frequency_table **table); +#else +static inline int dev_pm_opp_init_cpufreq_table(struct device *dev, + struct cpufreq_frequency_table + **table) +{ + return -EINVAL; +} + +static inline void dev_pm_opp_free_cpufreq_table(struct device *dev, + struct cpufreq_frequency_table + **table) +{ +} +#endif + +static inline bool cpufreq_next_valid(struct cpufreq_frequency_table **pos) +{ + while ((*pos)->frequency != CPUFREQ_TABLE_END) + if ((*pos)->frequency != CPUFREQ_ENTRY_INVALID) + return true; + else + (*pos)++; + return false; +} + +/* + * cpufreq_for_each_entry - iterate over a cpufreq_frequency_table + * @pos: the cpufreq_frequency_table * to use as a loop cursor. + * @table: the cpufreq_frequency_table * to iterate over. + */ + +#define cpufreq_for_each_entry(pos, table) \ + for (pos = table; pos->frequency != CPUFREQ_TABLE_END; pos++) + +/* + * cpufreq_for_each_valid_entry - iterate over a cpufreq_frequency_table + * excluding CPUFREQ_ENTRY_INVALID frequencies. + * @pos: the cpufreq_frequency_table * to use as a loop cursor. + * @table: the cpufreq_frequency_table * to iterate over. + */ + +#define cpufreq_for_each_valid_entry(pos, table) \ + for (pos = table; cpufreq_next_valid(&pos); pos++) + int cpufreq_frequency_table_cpuinfo(struct cpufreq_policy *policy, struct cpufreq_frequency_table *table); diff --git a/include/linux/devfreq.h b/include/linux/devfreq.h index d48dc00232a4..f1863dcd83ea 100644 --- a/include/linux/devfreq.h +++ b/include/linux/devfreq.h @@ -181,6 +181,12 @@ extern struct devfreq *devfreq_add_device(struct device *dev, const char *governor_name, void *data); extern int devfreq_remove_device(struct devfreq *devfreq); +extern struct devfreq *devm_devfreq_add_device(struct device *dev, + struct devfreq_dev_profile *profile, + const char *governor_name, + void *data); +extern void devm_devfreq_remove_device(struct device *dev, + struct devfreq *devfreq); /* Supposed to be called by PM_SLEEP/PM_RUNTIME callbacks */ extern int devfreq_suspend_device(struct devfreq *devfreq); @@ -193,6 +199,10 @@ extern int devfreq_register_opp_notifier(struct device *dev, struct devfreq *devfreq); extern int devfreq_unregister_opp_notifier(struct device *dev, struct devfreq *devfreq); +extern int devm_devfreq_register_opp_notifier(struct device *dev, + struct devfreq *devfreq); +extern void devm_devfreq_unregister_opp_notifier(struct device *dev, + struct devfreq *devfreq); #if IS_ENABLED(CONFIG_DEVFREQ_GOV_SIMPLE_ONDEMAND) /** @@ -220,7 +230,7 @@ static inline struct devfreq *devfreq_add_device(struct device *dev, const char *governor_name, void *data) { - return NULL; + return ERR_PTR(-ENOSYS); } static inline int devfreq_remove_device(struct devfreq *devfreq) @@ -228,6 +238,19 @@ static inline int devfreq_remove_device(struct devfreq *devfreq) return 0; } +static inline struct devfreq *devm_devfreq_add_device(struct device *dev, + struct devfreq_dev_profile *profile, + const char *governor_name, + void *data) +{ + return ERR_PTR(-ENOSYS); +} + +static inline void devm_devfreq_remove_device(struct device *dev, + struct devfreq *devfreq) +{ +} + static inline int devfreq_suspend_device(struct devfreq *devfreq) { return 0; @@ -256,6 +279,16 @@ static inline int devfreq_unregister_opp_notifier(struct device *dev, return -EINVAL; } +static inline int devm_devfreq_register_opp_notifier(struct device *dev, + struct devfreq *devfreq) +{ + return -EINVAL; +} + +static inline void devm_devfreq_unregister_opp_notifier(struct device *dev, + struct devfreq *devfreq) +{ +} #endif /* CONFIG_PM_DEVFREQ */ #endif /* __LINUX_DEVFREQ_H__ */ diff --git a/include/linux/pm.h b/include/linux/pm.h index d915d0345fa1..72c0fe098a27 100644 --- a/include/linux/pm.h +++ b/include/linux/pm.h @@ -93,13 +93,23 @@ typedef struct pm_message { * been registered) to recover from the race condition. * This method is executed for all kinds of suspend transitions and is * followed by one of the suspend callbacks: @suspend(), @freeze(), or - * @poweroff(). The PM core executes subsystem-level @prepare() for all - * devices before starting to invoke suspend callbacks for any of them, so - * generally devices may be assumed to be functional or to respond to - * runtime resume requests while @prepare() is being executed. However, - * device drivers may NOT assume anything about the availability of user - * space at that time and it is NOT valid to request firmware from within - * @prepare() (it's too late to do that). It also is NOT valid to allocate + * @poweroff(). If the transition is a suspend to memory or standby (that + * is, not related to hibernation), the return value of @prepare() may be + * used to indicate to the PM core to leave the device in runtime suspend + * if applicable. Namely, if @prepare() returns a positive number, the PM + * core will understand that as a declaration that the device appears to be + * runtime-suspended and it may be left in that state during the entire + * transition and during the subsequent resume if all of its descendants + * are left in runtime suspend too. If that happens, @complete() will be + * executed directly after @prepare() and it must ensure the proper + * functioning of the device after the system resume. + * The PM core executes subsystem-level @prepare() for all devices before + * starting to invoke suspend callbacks for any of them, so generally + * devices may be assumed to be functional or to respond to runtime resume + * requests while @prepare() is being executed. However, device drivers + * may NOT assume anything about the availability of user space at that + * time and it is NOT valid to request firmware from within @prepare() + * (it's too late to do that). It also is NOT valid to allocate * substantial amounts of memory from @prepare() in the GFP_KERNEL mode. * [To work around these limitations, drivers may register suspend and * hibernation notifiers to be executed before the freezing of tasks.] @@ -112,7 +122,16 @@ typedef struct pm_message { * of the other devices that the PM core has unsuccessfully attempted to * suspend earlier). * The PM core executes subsystem-level @complete() after it has executed - * the appropriate resume callbacks for all devices. + * the appropriate resume callbacks for all devices. If the corresponding + * @prepare() at the beginning of the suspend transition returned a + * positive number and the device was left in runtime suspend (without + * executing any suspend and resume callbacks for it), @complete() will be + * the only callback executed for the device during resume. In that case, + * @complete() must be prepared to do whatever is necessary to ensure the + * proper functioning of the device after the system resume. To this end, + * @complete() can check the power.direct_complete flag of the device to + * learn whether (unset) or not (set) the previous suspend and resume + * callbacks have been executed for it. * * @suspend: Executed before putting the system into a sleep state in which the * contents of main memory are preserved. The exact action to perform @@ -546,6 +565,7 @@ struct dev_pm_info { bool is_late_suspended:1; bool ignore_children:1; bool early_init:1; /* Owned by the PM core */ + bool direct_complete:1; /* Owned by the PM core */ spinlock_t lock; #ifdef CONFIG_PM_SLEEP struct list_head entry; diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h index 5151b0059585..0330217abfad 100644 --- a/include/linux/pm_opp.h +++ b/include/linux/pm_opp.h @@ -15,7 +15,6 @@ #define __LINUX_OPP_H__ #include <linux/err.h> -#include <linux/cpufreq.h> #include <linux/notifier.h> struct dev_pm_opp; @@ -117,23 +116,4 @@ static inline int of_init_opp_table(struct device *dev) } #endif -#if defined(CONFIG_CPU_FREQ) && defined(CONFIG_PM_OPP) -int dev_pm_opp_init_cpufreq_table(struct device *dev, - struct cpufreq_frequency_table **table); -void dev_pm_opp_free_cpufreq_table(struct device *dev, - struct cpufreq_frequency_table **table); -#else -static inline int dev_pm_opp_init_cpufreq_table(struct device *dev, - struct cpufreq_frequency_table **table) -{ - return -EINVAL; -} - -static inline -void dev_pm_opp_free_cpufreq_table(struct device *dev, - struct cpufreq_frequency_table **table) -{ -} -#endif /* CONFIG_CPU_FREQ */ - #endif /* __LINUX_OPP_H__ */ diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h index 2a5897a4afbc..43fd6716f662 100644 --- a/include/linux/pm_runtime.h +++ b/include/linux/pm_runtime.h @@ -101,6 +101,11 @@ static inline bool pm_runtime_status_suspended(struct device *dev) return dev->power.runtime_status == RPM_SUSPENDED; } +static inline bool pm_runtime_suspended_if_enabled(struct device *dev) +{ + return pm_runtime_status_suspended(dev) && dev->power.disable_depth == 1; +} + static inline bool pm_runtime_enabled(struct device *dev) { return !dev->power.disable_depth; @@ -150,6 +155,7 @@ static inline void device_set_run_wake(struct device *dev, bool enable) {} static inline bool pm_runtime_suspended(struct device *dev) { return false; } static inline bool pm_runtime_active(struct device *dev) { return true; } static inline bool pm_runtime_status_suspended(struct device *dev) { return false; } +static inline bool pm_runtime_suspended_if_enabled(struct device *dev) { return false; } static inline bool pm_runtime_enabled(struct device *dev) { return false; } static inline void pm_runtime_no_callbacks(struct device *dev) {} diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h index c9dc4e09854c..f2b76aeaf4e4 100644 --- a/include/linux/power_supply.h +++ b/include/linux/power_supply.h @@ -264,6 +264,8 @@ static inline int power_supply_is_system_supplied(void) { return -ENOSYS; } extern int power_supply_register(struct device *parent, struct power_supply *psy); +extern int power_supply_register_no_ws(struct device *parent, + struct power_supply *psy); extern void power_supply_unregister(struct power_supply *psy); extern int power_supply_powers(struct power_supply *psy, struct device *dev); diff --git a/include/linux/suspend.h b/include/linux/suspend.h index f73cabf59012..91d66fd8dce1 100644 --- a/include/linux/suspend.h +++ b/include/linux/suspend.h @@ -187,6 +187,11 @@ struct platform_suspend_ops { void (*recover)(void); }; +struct platform_freeze_ops { + int (*begin)(void); + void (*end)(void); +}; + #ifdef CONFIG_SUSPEND /** * suspend_set_ops - set platform dependent suspend operations @@ -194,6 +199,7 @@ struct platform_suspend_ops { */ extern void suspend_set_ops(const struct platform_suspend_ops *ops); extern int suspend_valid_only_mem(suspend_state_t state); +extern void freeze_set_ops(const struct platform_freeze_ops *ops); extern void freeze_wake(void); /** @@ -220,6 +226,7 @@ extern int pm_suspend(suspend_state_t state); static inline void suspend_set_ops(const struct platform_suspend_ops *ops) {} static inline int pm_suspend(suspend_state_t state) { return -ENOSYS; } +static inline void freeze_set_ops(const struct platform_freeze_ops *ops) {} static inline void freeze_wake(void) {} #endif /* !CONFIG_SUSPEND */ |