PM: Introduce struct pm_subsys_data
Introduce struct pm_subsys_data that may be subclassed by subsystems
to store subsystem-specific information related to the device. Move
the clock management fields accessed through the power.subsys_data
pointer in struct device to the new strucutre.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
diff --git a/include/linux/device.h b/include/linux/device.h
index c20dfbf..5d200ed 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -636,6 +636,11 @@
}
#endif
+static inline struct pm_subsys_data *dev_to_psd(struct device *dev)
+{
+ return dev ? dev->power.subsys_data : NULL;
+}
+
static inline unsigned int dev_get_uevent_suppress(const struct device *dev)
{
return dev->kobj.uevent_suppress;
diff --git a/include/linux/pm.h b/include/linux/pm.h
index f7c84c9..bf5ee37 100644
--- a/include/linux/pm.h
+++ b/include/linux/pm.h
@@ -421,6 +421,13 @@
struct wakeup_source;
+struct pm_subsys_data {
+ spinlock_t lock;
+#ifdef CONFIG_PM_CLK
+ struct list_head clock_list;
+#endif
+};
+
struct dev_pm_info {
pm_message_t power_state;
unsigned int can_wakeup:1;
@@ -462,7 +469,7 @@
unsigned long suspended_jiffies;
unsigned long accounting_timestamp;
#endif
- void *subsys_data; /* Owned by the subsystem. */
+ struct pm_subsys_data *subsys_data; /* Owned by the subsystem. */
};
extern void update_pm_runtime_accounting(struct device *dev);
diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h
index daac05d..6b90630e 100644
--- a/include/linux/pm_runtime.h
+++ b/include/linux/pm_runtime.h
@@ -258,14 +258,18 @@
};
#ifdef CONFIG_PM_CLK
-extern int pm_clk_init(struct device *dev);
+extern void pm_clk_init(struct device *dev);
+extern int pm_clk_create(struct device *dev);
extern void pm_clk_destroy(struct device *dev);
extern int pm_clk_add(struct device *dev, const char *con_id);
extern void pm_clk_remove(struct device *dev, const char *con_id);
extern int pm_clk_suspend(struct device *dev);
extern int pm_clk_resume(struct device *dev);
#else
-static inline int pm_clk_init(struct device *dev)
+static inline void pm_clk_init(struct device *dev)
+{
+}
+static inline int pm_clk_create(struct device *dev)
{
return -EINVAL;
}