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-rw-r--r--include/linux/pm_domain.h26
1 files changed, 19 insertions, 7 deletions
diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h
index f9ec1736a11..65633e5a2bc 100644
--- a/include/linux/pm_domain.h
+++ b/include/linux/pm_domain.h
@@ -13,6 +13,7 @@
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 */
@@ -25,15 +26,14 @@ struct dev_power_governor {
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 sd_node; /* Node in the parent's subdomain list */
- struct generic_pm_domain *parent; /* Parent PM domain */
- struct list_head sd_list; /* List of dubdomains */
+ 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;
unsigned int in_progress; /* Number of devices being suspended now */
- unsigned int sd_count; /* Number of subdomains with power "on" */
+ 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 */
@@ -42,6 +42,7 @@ struct generic_pm_domain {
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);
int (*power_on)(struct generic_pm_domain *domain);
int (*start_device)(struct device *dev);
@@ -54,12 +55,23 @@ static inline struct generic_pm_domain *pd_to_genpd(struct dev_pm_domain *pd)
return container_of(pd, struct generic_pm_domain, domain);
}
-struct dev_list_entry {
- struct list_head node;
- struct device *dev;
+struct gpd_link {
+ struct generic_pm_domain *master;
+ struct list_head master_node;
+ struct generic_pm_domain *slave;
+ struct list_head slave_node;
+};
+
+struct generic_pm_domain_data {
+ struct pm_domain_data base;
bool need_restore;
};
+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);
+}
+
#ifdef CONFIG_PM_GENERIC_DOMAINS
extern int pm_genpd_add_device(struct generic_pm_domain *genpd,
struct device *dev);