diff options
Diffstat (limited to 'include/linux/pm.h')
| -rw-r--r-- | include/linux/pm.h | 67 |
1 files changed, 57 insertions, 10 deletions
diff --git a/include/linux/pm.h b/include/linux/pm.h index 3b7e04b95bd2..8e258c727971 100644 --- a/include/linux/pm.h +++ b/include/linux/pm.h @@ -26,6 +26,7 @@ #include <linux/spinlock.h> #include <linux/wait.h> #include <linux/timer.h> +#include <linux/completion.h> /* * Callbacks for platform drivers to implement. @@ -178,9 +179,10 @@ typedef struct pm_message { * This need not mean that the device should be put into a low power state. * For example, if the device is behind a link which is about to be turned * off, the device may remain at full power. If the device does go to low - * power and if device_may_wakeup(dev) is true, remote wake-up (i.e., a - * hardware mechanism allowing the device to request a change of its power - * state, such as PCI PME) should be enabled for it. + * power and is capable of generating run-time wake-up events, remote + * wake-up (i.e., a hardware mechanism allowing the device to request a + * change of its power state via a wake-up event, such as PCI PME) should + * be enabled for it. * * @runtime_resume: Put the device into the fully active state in response to a * wake-up event generated by hardware or at the request of software. If @@ -213,20 +215,59 @@ struct dev_pm_ops { int (*runtime_idle)(struct device *dev); }; -/* - * Use this if you want to use the same suspend and resume callbacks for suspend - * to RAM and hibernation. - */ -#define SIMPLE_DEV_PM_OPS(name, suspend_fn, resume_fn) \ -struct dev_pm_ops name = { \ +#ifdef CONFIG_PM_SLEEP +#define SET_SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn) \ .suspend = suspend_fn, \ .resume = resume_fn, \ .freeze = suspend_fn, \ .thaw = resume_fn, \ .poweroff = suspend_fn, \ - .restore = resume_fn, \ + .restore = resume_fn, +#else +#define SET_SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn) +#endif + +#ifdef CONFIG_PM_RUNTIME +#define SET_RUNTIME_PM_OPS(suspend_fn, resume_fn, idle_fn) \ + .runtime_suspend = suspend_fn, \ + .runtime_resume = resume_fn, \ + .runtime_idle = idle_fn, +#else +#define SET_RUNTIME_PM_OPS(suspend_fn, resume_fn, idle_fn) +#endif + +/* + * Use this if you want to use the same suspend and resume callbacks for suspend + * to RAM and hibernation. + */ +#define SIMPLE_DEV_PM_OPS(name, suspend_fn, resume_fn) \ +const struct dev_pm_ops name = { \ + SET_SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn) \ +} + +/* + * Use this for defining a set of PM operations to be used in all situations + * (sustem suspend, hibernation or runtime PM). + */ +#define UNIVERSAL_DEV_PM_OPS(name, suspend_fn, resume_fn, idle_fn) \ +const struct dev_pm_ops name = { \ + SET_SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn) \ + SET_RUNTIME_PM_OPS(suspend_fn, resume_fn, idle_fn) \ } +/* + * Use this for subsystems (bus types, device types, device classes) that don't + * need any special suspend/resume handling in addition to invoking the PM + * callbacks provided by device drivers supporting both the system sleep PM and + * runtime PM, make the pm member point to generic_subsys_pm_ops. + */ +#ifdef CONFIG_PM_OPS +extern struct dev_pm_ops generic_subsys_pm_ops; +#define GENERIC_SUBSYS_PM_OPS (&generic_subsys_pm_ops) +#else +#define GENERIC_SUBSYS_PM_OPS NULL +#endif + /** * PM_EVENT_ messages * @@ -411,9 +452,11 @@ struct dev_pm_info { pm_message_t power_state; unsigned int can_wakeup:1; unsigned int should_wakeup:1; + unsigned async_suspend:1; enum dpm_state status; /* Owned by the PM core */ #ifdef CONFIG_PM_SLEEP struct list_head entry; + struct completion completion; #endif #ifdef CONFIG_PM_RUNTIME struct timer_list suspend_timer; @@ -428,6 +471,8 @@ struct dev_pm_info { unsigned int idle_notification:1; unsigned int request_pending:1; unsigned int deferred_resume:1; + unsigned int run_wake:1; + unsigned int runtime_auto:1; enum rpm_request request; enum rpm_status runtime_status; int runtime_error; @@ -506,6 +551,7 @@ extern void __suspend_report_result(const char *function, void *fn, int ret); __suspend_report_result(__func__, fn, ret); \ } while (0) +extern void device_pm_wait_for_dev(struct device *sub, struct device *dev); #else /* !CONFIG_PM_SLEEP */ #define device_pm_lock() do {} while (0) @@ -518,6 +564,7 @@ static inline int dpm_suspend_start(pm_message_t state) #define suspend_report_result(fn, ret) do {} while (0) +static inline void device_pm_wait_for_dev(struct device *a, struct device *b) {} #endif /* !CONFIG_PM_SLEEP */ /* How to reorder dpm_list after device_move() */ |