summaryrefslogtreecommitdiff
path: root/include/linux/pm_domain.h
diff options
context:
space:
mode:
authorSrikant Patnaik2015-01-11 12:28:04 +0530
committerSrikant Patnaik2015-01-11 12:28:04 +0530
commit871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch)
tree8718f573808810c2a1e8cb8fb6ac469093ca2784 /include/linux/pm_domain.h
parent9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff)
downloadFOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.gz
FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.bz2
FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.zip
Moved, renamed, and deleted files
The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure.
Diffstat (limited to 'include/linux/pm_domain.h')
-rw-r--r--include/linux/pm_domain.h243
1 files changed, 243 insertions, 0 deletions
diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h
new file mode 100644
index 00000000..30f794eb
--- /dev/null
+++ b/include/linux/pm_domain.h
@@ -0,0 +1,243 @@
+/*
+ * pm_domain.h - Definitions and headers related to device power domains.
+ *
+ * Copyright (C) 2011 Rafael J. Wysocki <rjw@sisk.pl>, Renesas Electronics Corp.
+ *
+ * This file is released under the GPLv2.
+ */
+
+#ifndef _LINUX_PM_DOMAIN_H
+#define _LINUX_PM_DOMAIN_H
+
+#include <linux/device.h>
+#include <linux/mutex.h>
+#include <linux/pm.h>
+#include <linux/err.h>
+#include <linux/of.h>
+#include <linux/notifier.h>
+
+enum gpd_status {
+ GPD_STATE_ACTIVE = 0, /* PM domain is active */
+ GPD_STATE_WAIT_MASTER, /* PM domain's master is being waited for */
+ GPD_STATE_BUSY, /* Something is happening to the PM domain */
+ GPD_STATE_REPEAT, /* Power off in progress, to be repeated */
+ GPD_STATE_POWER_OFF, /* PM domain is off */
+};
+
+struct dev_power_governor {
+ bool (*power_down_ok)(struct dev_pm_domain *domain);
+ bool (*stop_ok)(struct device *dev);
+};
+
+struct gpd_dev_ops {
+ int (*start)(struct device *dev);
+ int (*stop)(struct device *dev);
+ int (*save_state)(struct device *dev);
+ int (*restore_state)(struct device *dev);
+ int (*suspend)(struct device *dev);
+ int (*suspend_late)(struct device *dev);
+ int (*resume_early)(struct device *dev);
+ int (*resume)(struct device *dev);
+ int (*freeze)(struct device *dev);
+ int (*freeze_late)(struct device *dev);
+ int (*thaw_early)(struct device *dev);
+ int (*thaw)(struct device *dev);
+ bool (*active_wakeup)(struct device *dev);
+};
+
+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 */
+ struct list_head master_links; /* Links with PM domain as a master */
+ struct list_head slave_links; /* Links with PM domain as a slave */
+ struct list_head dev_list; /* List of devices */
+ struct mutex lock;
+ struct dev_power_governor *gov;
+ struct work_struct power_off_work;
+ char *name;
+ unsigned int in_progress; /* Number of devices being suspended now */
+ atomic_t sd_count; /* Number of subdomains with power "on" */
+ enum gpd_status status; /* Current state of the domain */
+ wait_queue_head_t status_wait_queue;
+ struct task_struct *poweroff_task; /* Powering off task */
+ unsigned int resume_count; /* Number of devices being resumed */
+ unsigned int device_count; /* Number of devices */
+ unsigned int suspended_count; /* System suspend device counter */
+ unsigned int prepared_count; /* Suspend counter of prepared devices */
+ bool suspend_power_off; /* Power status before system suspend */
+ bool dev_irq_safe; /* Device callbacks are IRQ-safe */
+ int (*power_off)(struct generic_pm_domain *domain);
+ s64 power_off_latency_ns;
+ int (*power_on)(struct generic_pm_domain *domain);
+ s64 power_on_latency_ns;
+ struct gpd_dev_ops dev_ops;
+ s64 max_off_time_ns; /* Maximum allowed "suspended" time. */
+ bool max_off_time_changed;
+ bool cached_power_down_ok;
+ struct device_node *of_node; /* Node in device tree */
+};
+
+static inline struct generic_pm_domain *pd_to_genpd(struct dev_pm_domain *pd)
+{
+ return container_of(pd, struct generic_pm_domain, domain);
+}
+
+struct gpd_link {
+ struct generic_pm_domain *master;
+ struct list_head master_node;
+ struct generic_pm_domain *slave;
+ struct list_head slave_node;
+};
+
+struct gpd_timing_data {
+ s64 stop_latency_ns;
+ s64 start_latency_ns;
+ s64 save_state_latency_ns;
+ s64 restore_state_latency_ns;
+ s64 effective_constraint_ns;
+ bool constraint_changed;
+ bool cached_stop_ok;
+};
+
+struct generic_pm_domain_data {
+ struct pm_domain_data base;
+ struct gpd_dev_ops ops;
+ struct gpd_timing_data td;
+ struct notifier_block nb;
+ struct mutex lock;
+ bool need_restore;
+ bool always_on;
+};
+
+#ifdef CONFIG_PM_GENERIC_DOMAINS
+static inline struct generic_pm_domain_data *to_gpd_data(struct pm_domain_data *pdd)
+{
+ return container_of(pdd, struct generic_pm_domain_data, base);
+}
+
+static inline struct generic_pm_domain_data *dev_gpd_data(struct device *dev)
+{
+ return to_gpd_data(dev->power.subsys_data->domain_data);
+}
+
+extern struct dev_power_governor simple_qos_governor;
+
+extern struct generic_pm_domain *dev_to_genpd(struct device *dev);
+extern int __pm_genpd_add_device(struct generic_pm_domain *genpd,
+ struct device *dev,
+ struct gpd_timing_data *td);
+
+extern int __pm_genpd_of_add_device(struct device_node *genpd_node,
+ struct device *dev,
+ struct gpd_timing_data *td);
+
+static inline int pm_genpd_add_device(struct generic_pm_domain *genpd,
+ struct device *dev)
+{
+ return __pm_genpd_add_device(genpd, dev, NULL);
+}
+
+static inline int pm_genpd_of_add_device(struct device_node *genpd_node,
+ struct device *dev)
+{
+ return __pm_genpd_of_add_device(genpd_node, dev, NULL);
+}
+
+extern int pm_genpd_remove_device(struct generic_pm_domain *genpd,
+ struct device *dev);
+extern void pm_genpd_dev_always_on(struct device *dev, bool val);
+extern void pm_genpd_dev_need_restore(struct device *dev, bool val);
+extern int pm_genpd_add_subdomain(struct generic_pm_domain *genpd,
+ struct generic_pm_domain *new_subdomain);
+extern int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd,
+ struct generic_pm_domain *target);
+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 void pm_genpd_init(struct generic_pm_domain *genpd,
+ struct dev_power_governor *gov, bool is_off);
+
+extern int pm_genpd_poweron(struct generic_pm_domain *genpd);
+
+extern bool default_stop_ok(struct device *dev);
+
+extern struct dev_power_governor pm_domain_always_on_gov;
+#else
+
+static inline struct generic_pm_domain_data *dev_gpd_data(struct device *dev)
+{
+ return ERR_PTR(-ENOSYS);
+}
+static inline struct generic_pm_domain *dev_to_genpd(struct device *dev)
+{
+ return ERR_PTR(-ENOSYS);
+}
+static inline int __pm_genpd_add_device(struct generic_pm_domain *genpd,
+ struct device *dev,
+ struct gpd_timing_data *td)
+{
+ return -ENOSYS;
+}
+static inline int pm_genpd_add_device(struct generic_pm_domain *genpd,
+ struct device *dev)
+{
+ return -ENOSYS;
+}
+static inline int pm_genpd_remove_device(struct generic_pm_domain *genpd,
+ struct device *dev)
+{
+ return -ENOSYS;
+}
+static inline void pm_genpd_dev_always_on(struct device *dev, bool val) {}
+static inline void pm_genpd_dev_need_restore(struct device *dev, bool val) {}
+static inline int pm_genpd_add_subdomain(struct generic_pm_domain *genpd,
+ struct generic_pm_domain *new_sd)
+{
+ return -ENOSYS;
+}
+static inline int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd,
+ struct generic_pm_domain *target)
+{
+ return -ENOSYS;
+}
+static inline int pm_genpd_add_callbacks(struct device *dev,
+ struct gpd_dev_ops *ops,
+ struct gpd_timing_data *td)
+{
+ return -ENOSYS;
+}
+static inline int __pm_genpd_remove_callbacks(struct device *dev, bool clear_td)
+{
+ return -ENOSYS;
+}
+static inline void pm_genpd_init(struct generic_pm_domain *genpd,
+ struct dev_power_governor *gov, bool is_off)
+{
+}
+static inline int pm_genpd_poweron(struct generic_pm_domain *genpd)
+{
+ return -ENOSYS;
+}
+static inline bool default_stop_ok(struct device *dev)
+{
+ return false;
+}
+#define simple_qos_governor NULL
+#define pm_domain_always_on_gov NULL
+#endif
+
+static inline int pm_genpd_remove_callbacks(struct device *dev)
+{
+ return __pm_genpd_remove_callbacks(dev, true);
+}
+
+#ifdef CONFIG_PM_GENERIC_DOMAINS_RUNTIME
+extern void genpd_queue_power_off_work(struct generic_pm_domain *genpd);
+extern void pm_genpd_poweroff_unused(void);
+#else
+static inline void genpd_queue_power_off_work(struct generic_pm_domain *gpd) {}
+static inline void pm_genpd_poweroff_unused(void) {}
+#endif
+
+#endif /* _LINUX_PM_DOMAIN_H */