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Power management updates for 3.6

Browse source 
* ACPI conversion to PM handling based on struct dev_pm_ops.
 * Conversion of a number of platform drivers to PM handling based on struct
   dev_pm_ops and removal of empty legacy PM callbacks from a couple of PCI
   drivers.
 * Suspend-to-both for in-kernel hibernation from Bojan Smojver.
 * cpuidle fixes and cleanups from ShuoX Liu, Daniel Lezcano and Preeti U Murthy.
 * cpufreq bug fixes from Jonghwa Lee and Stephen Boyd.
 * Suspend and hibernate fixes from Srivatsa S. Bhat and Colin Cross.
 * Generic PM domains framework updates.
 * RTC CMOS wakeup signaling update from Paul Fox.
 * sparse warnings fixes from Sachin Kamat.
 * Build warnings fixes for the generic PM domains framework and PM sysfs code.
 * sysfs switch for printing device suspend times from Sameer Nanda.
 * Documentation fix from Oskar Schirmer.
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Merge tag 'pm-for-3.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management updates from Rafael Wysocki:

 - ACPI conversion to PM handling based on struct dev_pm_ops.
 - Conversion of a number of platform drivers to PM handling based on
   struct dev_pm_ops and removal of empty legacy PM callbacks from a
   couple of PCI drivers.
 - Suspend-to-both for in-kernel hibernation from Bojan Smojver.
 - cpuidle fixes and cleanups from ShuoX Liu, Daniel Lezcano and Preeti
   Murthy.
 - cpufreq bug fixes from Jonghwa Lee and Stephen Boyd.
 - Suspend and hibernate fixes from Srivatsa Bhat and Colin Cross.
 - Generic PM domains framework updates.
 - RTC CMOS wakeup signaling update from Paul Fox.
 - sparse warnings fixes from Sachin Kamat.
 - Build warnings fixes for the generic PM domains framework and PM
   sysfs code.
 - sysfs switch for printing device suspend times from Sameer Nanda.
 - Documentation fix from Oskar Schirmer.

* tag 'pm-for-3.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (70 commits)
  cpufreq: Fix sysfs deadlock with concurrent hotplug/frequency switch
  EXYNOS: bugfix on retrieving old_index from freqs.old
  PM / Sleep: call early resume handlers when suspend_noirq fails
  PM / QoS: Use NULL pointer instead of plain integer in qos.c
  PM / QoS: Use NULL pointer instead of plain integer in pm_qos.h
  PM / Sleep: Require CAP_BLOCK_SUSPEND to use wake_lock/wake_unlock
  PM / Sleep: Add missing static storage class specifiers in main.c
  cpuilde / ACPI: remove time from acpi_processor_cx structure
  cpuidle / ACPI: remove usage from acpi_processor_cx structure
  cpuidle / ACPI : remove latency_ticks from acpi_processor_cx structure
  rtc-cmos: report wakeups from interrupt handler
  PM / Sleep: Fix build warning in sysfs.c for CONFIG_PM_SLEEP unset
  PM / Domains: Fix build warning for CONFIG_PM_RUNTIME unset
  olpc-xo15-sci: Use struct dev_pm_ops for power management
  PM / Domains: Replace plain integer with NULL pointer in domain.c file
  PM / Domains: Add missing static storage class specifier in domain.c file
  PM / crypto / ux500: Use struct dev_pm_ops for power management
  PM / IPMI: Remove empty legacy PCI PM callbacks
  tpm_nsc: Use struct dev_pm_ops for power management
  tpm_tis: Use struct dev_pm_ops for power management
  ...
This commit is contained in:
Linus Torvalds 2012-07-22 13:36:52 -07:00
commit 7100e505b7
65 changed files with 887 additions and 479 deletions
Download patch file Download diff file Expand all files Collapse all files

20
include/linux/cpuidle.h
View file

@ -34,6 +34,7 @@ struct cpuidle_driver;
struct cpuidle_state_usage {
void *driver_data;
unsigned long long disable;
unsigned long long usage;
unsigned long long time; /* in US */
};
@ -46,7 +47,7 @@ struct cpuidle_state {
unsigned int exit_latency; /* in US */
int power_usage; /* in mW */
unsigned int target_residency; /* in US */
unsigned int disable;
bool disabled; /* disabled on all CPUs */
int (*enter) (struct cpuidle_device *dev,
struct cpuidle_driver *drv,
@ -136,13 +137,17 @@ struct cpuidle_driver {
extern void disable_cpuidle(void);
extern int cpuidle_idle_call(void);
extern int cpuidle_register_driver(struct cpuidle_driver *drv);
struct cpuidle_driver *cpuidle_get_driver(void);
extern struct cpuidle_driver *cpuidle_get_driver(void);
extern struct cpuidle_driver *cpuidle_driver_ref(void);
extern void cpuidle_driver_unref(void);
extern void cpuidle_unregister_driver(struct cpuidle_driver *drv);
extern int cpuidle_register_device(struct cpuidle_device *dev);
extern void cpuidle_unregister_device(struct cpuidle_device *dev);
extern void cpuidle_pause_and_lock(void);
extern void cpuidle_resume_and_unlock(void);
extern void cpuidle_pause(void);
extern void cpuidle_resume(void);
extern int cpuidle_enable_device(struct cpuidle_device *dev);
extern void cpuidle_disable_device(struct cpuidle_device *dev);
extern int cpuidle_wrap_enter(struct cpuidle_device *dev,
@ -157,6 +162,8 @@ static inline int cpuidle_idle_call(void) { return -ENODEV; }
static inline int cpuidle_register_driver(struct cpuidle_driver *drv)
{return -ENODEV; }
static inline struct cpuidle_driver *cpuidle_get_driver(void) {return NULL; }
static inline struct cpuidle_driver *cpuidle_driver_ref(void) {return NULL; }
static inline void cpuidle_driver_unref(void) {}
static inline void cpuidle_unregister_driver(struct cpuidle_driver *drv) { }
static inline int cpuidle_register_device(struct cpuidle_device *dev)
{return -ENODEV; }
@ -164,6 +171,8 @@ static inline void cpuidle_unregister_device(struct cpuidle_device *dev) { }
static inline void cpuidle_pause_and_lock(void) { }
static inline void cpuidle_resume_and_unlock(void) { }
static inline void cpuidle_pause(void) { }
static inline void cpuidle_resume(void) { }
static inline int cpuidle_enable_device(struct cpuidle_device *dev)
{return -ENODEV; }
static inline void cpuidle_disable_device(struct cpuidle_device *dev) { }
@ -202,14 +211,7 @@ struct cpuidle_governor {
extern int cpuidle_register_governor(struct cpuidle_governor *gov);
extern void cpuidle_unregister_governor(struct cpuidle_governor *gov);
#ifdef CONFIG_INTEL_IDLE
extern int intel_idle_cpu_init(int cpu);
#else
static inline int intel_idle_cpu_init(int cpu) { return -1; }
#endif
#else
static inline int intel_idle_cpu_init(int cpu) { return -1; }
static inline int cpuidle_register_governor(struct cpuidle_governor *gov)
{return 0;}

18
include/linux/pm_domain.h
View file

@ -15,6 +15,7 @@
#include <linux/err.h>
#include <linux/of.h>
#include <linux/notifier.h>
#include <linux/cpuidle.h>
enum gpd_status {
GPD_STATE_ACTIVE = 0, /* PM domain is active */
@ -45,6 +46,11 @@ struct gpd_dev_ops {
bool (*active_wakeup)(struct device *dev);
};
struct gpd_cpu_data {
unsigned int saved_exit_latency;
struct cpuidle_state *idle_state;
};
struct generic_pm_domain {
struct dev_pm_domain domain; /* PM domain operations */
struct list_head gpd_list_node; /* Node in the global PM domains list */
@ -75,6 +81,7 @@ struct generic_pm_domain {
bool max_off_time_changed;
bool cached_power_down_ok;
struct device_node *of_node; /* Node in device tree */
struct gpd_cpu_data *cpu_data;
};
static inline struct generic_pm_domain *pd_to_genpd(struct dev_pm_domain *pd)
@ -105,6 +112,7 @@ struct generic_pm_domain_data {
struct gpd_timing_data td;
struct notifier_block nb;
struct mutex lock;
unsigned int refcount;
bool need_restore;
bool always_on;
};
@ -155,6 +163,8 @@ extern int pm_genpd_add_callbacks(struct device *dev,
struct gpd_dev_ops *ops,
struct gpd_timing_data *td);
extern int __pm_genpd_remove_callbacks(struct device *dev, bool clear_td);
extern int genpd_attach_cpuidle(struct generic_pm_domain *genpd, int state);
extern int genpd_detach_cpuidle(struct generic_pm_domain *genpd);
extern void pm_genpd_init(struct generic_pm_domain *genpd,
struct dev_power_governor *gov, bool is_off);
@ -211,6 +221,14 @@ static inline int __pm_genpd_remove_callbacks(struct device *dev, bool clear_td)
{
return -ENOSYS;
}
static inline int genpd_attach_cpuidle(struct generic_pm_domain *genpd, int st)
{
return -ENOSYS;
}
static inline int genpd_detach_cpuidle(struct generic_pm_domain *genpd)
{
return -ENOSYS;
}
static inline void pm_genpd_init(struct generic_pm_domain *genpd,
struct dev_power_governor *gov, bool is_off)
{

2
include/linux/pm_qos.h
View file

@ -66,7 +66,7 @@ enum pm_qos_req_action {
static inline int dev_pm_qos_request_active(struct dev_pm_qos_request *req)
{
return req->dev != 0;
return req->dev != NULL;
}
int pm_qos_update_target(struct pm_qos_constraints *c, struct plist_node *node,

6
include/linux/suspend.h
View file

@ -408,6 +408,12 @@ static inline void unlock_system_sleep(void) {}
#endif /* !CONFIG_PM_SLEEP */
#ifdef CONFIG_PM_SLEEP_DEBUG
extern bool pm_print_times_enabled;
#else
#define pm_print_times_enabled (false)
#endif
#ifdef CONFIG_PM_AUTOSLEEP
/* kernel/power/autosleep.c */