PM: Export platform bus type's default PM callbacks

Export the default PM callbacks defined for the platform bus type so
that they can be used by power domains for suspending and resuming
platform devices in the future.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>

2 files changed, 78 insertions, 54 deletions

diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index 9e0e4fc24c46..313556f28c9e 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -667,7 +667,7 @@ static int platform_legacy_resume(struct device *dev)
         return ret;
 }
 
-static int platform_pm_prepare(struct device *dev)
+int platform_pm_prepare(struct device *dev)
 {
         struct device_driver *drv = dev->driver;
         int ret = 0;
@@ -678,7 +678,7 @@ static int platform_pm_prepare(struct device *dev)
         return ret;
 }
 
-static void platform_pm_complete(struct device *dev)
+void platform_pm_complete(struct device *dev)
 {
         struct device_driver *drv = dev->driver;
 
@@ -686,16 +686,11 @@ static void platform_pm_complete(struct device *dev)
                 drv->pm->complete(dev);
 }
 
-#else /* !CONFIG_PM_SLEEP */
-
-#define platform_pm_prepare             NULL
-#define platform_pm_complete            NULL
-
-#endif /* !CONFIG_PM_SLEEP */
+#endif /* CONFIG_PM_SLEEP */
 
 #ifdef CONFIG_SUSPEND
 
-int __weak platform_pm_suspend(struct device *dev)
+int platform_pm_suspend(struct device *dev)
 {
         struct device_driver *drv = dev->driver;
         int ret = 0;
@@ -713,7 +708,7 @@ int __weak platform_pm_suspend(struct device *dev)
         return ret;
 }
 
-int __weak platform_pm_suspend_noirq(struct device *dev)
+int platform_pm_suspend_noirq(struct device *dev)
 {
         struct device_driver *drv = dev->driver;
         int ret = 0;
@@ -729,7 +724,7 @@ int __weak platform_pm_suspend_noirq(struct device *dev)
         return ret;
 }
 
-int __weak platform_pm_resume(struct device *dev)
+int platform_pm_resume(struct device *dev)
 {
         struct device_driver *drv = dev->driver;
         int ret = 0;
@@ -747,7 +742,7 @@ int __weak platform_pm_resume(struct device *dev)
         return ret;
 }
 
-int __weak platform_pm_resume_noirq(struct device *dev)
+int platform_pm_resume_noirq(struct device *dev)
 {
         struct device_driver *drv = dev->driver;
         int ret = 0;
@@ -763,18 +758,11 @@ int __weak platform_pm_resume_noirq(struct device *dev)
         return ret;
 }
 
-#else /* !CONFIG_SUSPEND */
-
-#define platform_pm_suspend             NULL
-#define platform_pm_resume              NULL
-#define platform_pm_suspend_noirq       NULL
-#define platform_pm_resume_noirq        NULL
-
-#endif /* !CONFIG_SUSPEND */
+#endif /* CONFIG_SUSPEND */
 
 #ifdef CONFIG_HIBERNATE_CALLBACKS
 
-static int platform_pm_freeze(struct device *dev)
+int platform_pm_freeze(struct device *dev)
 {
         struct device_driver *drv = dev->driver;
         int ret = 0;
@@ -792,7 +780,7 @@ static int platform_pm_freeze(struct device *dev)
         return ret;
 }
 
-static int platform_pm_freeze_noirq(struct device *dev)
+int platform_pm_freeze_noirq(struct device *dev)
 {
         struct device_driver *drv = dev->driver;
         int ret = 0;
@@ -808,7 +796,7 @@ static int platform_pm_freeze_noirq(struct device *dev)
         return ret;
 }
 
-static int platform_pm_thaw(struct device *dev)
+int platform_pm_thaw(struct device *dev)
 {
         struct device_driver *drv = dev->driver;
         int ret = 0;
@@ -826,7 +814,7 @@ static int platform_pm_thaw(struct device *dev)
         return ret;
 }
 
-static int platform_pm_thaw_noirq(struct device *dev)
+int platform_pm_thaw_noirq(struct device *dev)
 {
         struct device_driver *drv = dev->driver;
         int ret = 0;
@@ -842,7 +830,7 @@ static int platform_pm_thaw_noirq(struct device *dev)
         return ret;
 }
 
-static int platform_pm_poweroff(struct device *dev)
+int platform_pm_poweroff(struct device *dev)
 {
         struct device_driver *drv = dev->driver;
         int ret = 0;
@@ -860,7 +848,7 @@ static int platform_pm_poweroff(struct device *dev)
         return ret;
 }
 
-static int platform_pm_poweroff_noirq(struct device *dev)
+int platform_pm_poweroff_noirq(struct device *dev)
 {
         struct device_driver *drv = dev->driver;
         int ret = 0;
@@ -876,7 +864,7 @@ static int platform_pm_poweroff_noirq(struct device *dev)
         return ret;
 }
 
-static int platform_pm_restore(struct device *dev)
+int platform_pm_restore(struct device *dev)
 {
         struct device_driver *drv = dev->driver;
         int ret = 0;
@@ -894,7 +882,7 @@ static int platform_pm_restore(struct device *dev)
         return ret;
 }
 
-static int platform_pm_restore_noirq(struct device *dev)
+int platform_pm_restore_noirq(struct device *dev)
 {
         struct device_driver *drv = dev->driver;
         int ret = 0;
@@ -910,18 +898,7 @@ static int platform_pm_restore_noirq(struct device *dev)
         return ret;
 }
 
-#else /* !CONFIG_HIBERNATE_CALLBACKS */
-
-#define platform_pm_freeze              NULL
-#define platform_pm_thaw                NULL
-#define platform_pm_poweroff            NULL
-#define platform_pm_restore             NULL
-#define platform_pm_freeze_noirq        NULL
-#define platform_pm_thaw_noirq          NULL
-#define platform_pm_poweroff_noirq      NULL
-#define platform_pm_restore_noirq       NULL
-
-#endif /* !CONFIG_HIBERNATE_CALLBACKS */
+#endif /* CONFIG_HIBERNATE_CALLBACKS */
 
 #ifdef CONFIG_PM_RUNTIME
 
@@ -949,23 +926,10 @@ int __weak platform_pm_runtime_idle(struct device *dev)
 #endif /* !CONFIG_PM_RUNTIME */
 
 static const struct dev_pm_ops platform_dev_pm_ops = {
-        .prepare = platform_pm_prepare,
-        .complete = platform_pm_complete,
-        .suspend = platform_pm_suspend,
-        .resume = platform_pm_resume,
-        .freeze = platform_pm_freeze,
-        .thaw = platform_pm_thaw,
-        .poweroff = platform_pm_poweroff,
-        .restore = platform_pm_restore,
-        .suspend_noirq = platform_pm_suspend_noirq,
-        .resume_noirq = platform_pm_resume_noirq,
-        .freeze_noirq = platform_pm_freeze_noirq,
-        .thaw_noirq = platform_pm_thaw_noirq,
-        .poweroff_noirq = platform_pm_poweroff_noirq,
-        .restore_noirq = platform_pm_restore_noirq,
         .runtime_suspend = platform_pm_runtime_suspend,
         .runtime_resume = platform_pm_runtime_resume,
         .runtime_idle = platform_pm_runtime_idle,
+        USE_PLATFORM_PM_SLEEP_OPS
 };
 
 struct bus_type platform_bus_type = {
diff --git a/include/linux/platform_device.h b/include/linux/platform_device.h
index 744942c95fec..e0093e061b08 100644
--- a/include/linux/platform_device.h
+++ b/include/linux/platform_device.h
@@ -205,4 +205,64 @@ static inline char *early_platform_driver_setup_func(void)		\
 }
 #endif /* MODULE */
 
+#ifdef CONFIG_PM_SLEEP
+extern int platform_pm_prepare(struct device *dev);
+extern void platform_pm_complete(struct device *dev);
+#else
+#define platform_pm_prepare     NULL
+#define platform_pm_complete    NULL
+#endif
+
+#ifdef CONFIG_SUSPEND
+extern int platform_pm_suspend(struct device *dev);
+extern int platform_pm_suspend_noirq(struct device *dev);
+extern int platform_pm_resume(struct device *dev);
+extern int platform_pm_resume_noirq(struct device *dev);
+#else
+#define platform_pm_suspend             NULL
+#define platform_pm_resume              NULL
+#define platform_pm_suspend_noirq       NULL
+#define platform_pm_resume_noirq        NULL
+#endif
+
+#ifdef CONFIG_HIBERNATE_CALLBACKS
+extern int platform_pm_freeze(struct device *dev);
+extern int platform_pm_freeze_noirq(struct device *dev);
+extern int platform_pm_thaw(struct device *dev);
+extern int platform_pm_thaw_noirq(struct device *dev);
+extern int platform_pm_poweroff(struct device *dev);
+extern int platform_pm_poweroff_noirq(struct device *dev);
+extern int platform_pm_restore(struct device *dev);
+extern int platform_pm_restore_noirq(struct device *dev);
+#else
+#define platform_pm_freeze              NULL
+#define platform_pm_thaw                NULL
+#define platform_pm_poweroff            NULL
+#define platform_pm_restore             NULL
+#define platform_pm_freeze_noirq        NULL
+#define platform_pm_thaw_noirq          NULL
+#define platform_pm_poweroff_noirq      NULL
+#define platform_pm_restore_noirq       NULL
+#endif
+
+#ifdef CONFIG_PM_SLEEP
+#define USE_PLATFORM_PM_SLEEP_OPS \
+        .prepare = platform_pm_prepare, \
+        .complete = platform_pm_complete, \
+        .suspend = platform_pm_suspend, \
+        .resume = platform_pm_resume, \
+        .freeze = platform_pm_freeze, \
+        .thaw = platform_pm_thaw, \
+        .poweroff = platform_pm_poweroff, \
+        .restore = platform_pm_restore, \
+        .suspend_noirq = platform_pm_suspend_noirq, \
+        .resume_noirq = platform_pm_resume_noirq, \
+        .freeze_noirq = platform_pm_freeze_noirq, \
+        .thaw_noirq = platform_pm_thaw_noirq, \
+        .poweroff_noirq = platform_pm_poweroff_noirq, \
+        .restore_noirq = platform_pm_restore_noirq,
+#else
+#define USE_PLATFORM_PM_SLEEP_OPS
+#endif
+
 #endif /* _PLATFORM_DEVICE_H_ */