PM: Export AMBA 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.

Like 69c9dd1ecf446ad8a830e4afc539a2a1adc85b78 ("PM: Export platform bus
type's default PM callbacks").

Change-Id: I92aa13abe15c153aa5d90def7eb212626f6d0213
Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>

2 files changed, 75 insertions, 28 deletions

diff --git a/drivers/amba/bus.c b/drivers/amba/bus.c
index d74926e0939..6e4b1553afe 100644
--- a/drivers/amba/bus.c
+++ b/drivers/amba/bus.c
@@ -109,7 +109,7 @@ static int amba_legacy_resume(struct device *dev)
 	return ret;
 }
 
-static int amba_pm_prepare(struct device *dev)
+int amba_pm_prepare(struct device *dev)
 {
 	struct device_driver *drv = dev->driver;
 	int ret = 0;
@@ -120,7 +120,7 @@ static int amba_pm_prepare(struct device *dev)
 	return ret;
 }
 
-static void amba_pm_complete(struct device *dev)
+void amba_pm_complete(struct device *dev)
 {
 	struct device_driver *drv = dev->driver;
 
@@ -137,7 +137,7 @@ static void amba_pm_complete(struct device *dev)
 
 #ifdef CONFIG_SUSPEND
 
-static int amba_pm_suspend(struct device *dev)
+int amba_pm_suspend(struct device *dev)
 {
 	struct device_driver *drv = dev->driver;
 	int ret = 0;
@@ -155,7 +155,7 @@ static int amba_pm_suspend(struct device *dev)
 	return ret;
 }
 
-static int amba_pm_suspend_noirq(struct device *dev)
+int amba_pm_suspend_noirq(struct device *dev)
 {
 	struct device_driver *drv = dev->driver;
 	int ret = 0;
@@ -171,7 +171,7 @@ static int amba_pm_suspend_noirq(struct device *dev)
 	return ret;
 }
 
-static int amba_pm_resume(struct device *dev)
+int amba_pm_resume(struct device *dev)
 {
 	struct device_driver *drv = dev->driver;
 	int ret = 0;
@@ -189,7 +189,7 @@ static int amba_pm_resume(struct device *dev)
 	return ret;
 }
 
-static int amba_pm_resume_noirq(struct device *dev)
+int amba_pm_resume_noirq(struct device *dev)
 {
 	struct device_driver *drv = dev->driver;
 	int ret = 0;
@@ -216,7 +216,7 @@ static int amba_pm_resume_noirq(struct device *dev)
 
 #ifdef CONFIG_HIBERNATE_CALLBACKS
 
-static int amba_pm_freeze(struct device *dev)
+int amba_pm_freeze(struct device *dev)
 {
 	struct device_driver *drv = dev->driver;
 	int ret = 0;
@@ -234,7 +234,7 @@ static int amba_pm_freeze(struct device *dev)
 	return ret;
 }
 
-static int amba_pm_freeze_noirq(struct device *dev)
+int amba_pm_freeze_noirq(struct device *dev)
 {
 	struct device_driver *drv = dev->driver;
 	int ret = 0;
@@ -250,7 +250,7 @@ static int amba_pm_freeze_noirq(struct device *dev)
 	return ret;
 }
 
-static int amba_pm_thaw(struct device *dev)
+int amba_pm_thaw(struct device *dev)
 {
 	struct device_driver *drv = dev->driver;
 	int ret = 0;
@@ -268,7 +268,7 @@ static int amba_pm_thaw(struct device *dev)
 	return ret;
 }
 
-static int amba_pm_thaw_noirq(struct device *dev)
+int amba_pm_thaw_noirq(struct device *dev)
 {
 	struct device_driver *drv = dev->driver;
 	int ret = 0;
@@ -284,7 +284,7 @@ static int amba_pm_thaw_noirq(struct device *dev)
 	return ret;
 }
 
-static int amba_pm_poweroff(struct device *dev)
+int amba_pm_poweroff(struct device *dev)
 {
 	struct device_driver *drv = dev->driver;
 	int ret = 0;
@@ -302,7 +302,7 @@ static int amba_pm_poweroff(struct device *dev)
 	return ret;
 }
 
-static int amba_pm_poweroff_noirq(struct device *dev)
+int amba_pm_poweroff_noirq(struct device *dev)
 {
 	struct device_driver *drv = dev->driver;
 	int ret = 0;
@@ -318,7 +318,7 @@ static int amba_pm_poweroff_noirq(struct device *dev)
 	return ret;
 }
 
-static int amba_pm_restore(struct device *dev)
+int amba_pm_restore(struct device *dev)
 {
 	struct device_driver *drv = dev->driver;
 	int ret = 0;
@@ -336,7 +336,7 @@ static int amba_pm_restore(struct device *dev)
 	return ret;
 }
 
-static int amba_pm_restore_noirq(struct device *dev)
+int amba_pm_restore_noirq(struct device *dev)
 {
 	struct device_driver *drv = dev->driver;
 	int ret = 0;
@@ -368,20 +368,7 @@ static int amba_pm_restore_noirq(struct device *dev)
 #ifdef CONFIG_PM
 
 static const struct dev_pm_ops amba_pm = {
-	.prepare	= amba_pm_prepare,
-	.complete	= amba_pm_complete,
-	.suspend	= amba_pm_suspend,
-	.resume		= amba_pm_resume,
-	.freeze		= amba_pm_freeze,
-	.thaw		= amba_pm_thaw,
-	.poweroff	= amba_pm_poweroff,
-	.restore	= amba_pm_restore,
-	.suspend_noirq	= amba_pm_suspend_noirq,
-	.resume_noirq	= amba_pm_resume_noirq,
-	.freeze_noirq	= amba_pm_freeze_noirq,
-	.thaw_noirq	= amba_pm_thaw_noirq,
-	.poweroff_noirq	= amba_pm_poweroff_noirq,
-	.restore_noirq	= amba_pm_restore_noirq,
+	USE_AMBA_PM_SLEEP_OPS
 	SET_RUNTIME_PM_OPS(
 		pm_generic_runtime_suspend,
 		pm_generic_runtime_resume,
diff --git a/include/linux/amba/bus.h b/include/linux/amba/bus.h
index fcbbe71a3cc..849aec9aba5 100644
--- a/include/linux/amba/bus.h
+++ b/include/linux/amba/bus.h
@@ -94,4 +94,64 @@ void amba_release_regions(struct amba_device *);
 #define amba_manf(d)	AMBA_MANF_BITS((d)->periphid)
 #define amba_part(d)	AMBA_PART_BITS((d)->periphid)
 
+#ifdef CONFIG_PM_SLEEP
+extern int amba_pm_prepare(struct device *dev);
+extern void amba_pm_complete(struct device *dev);
+#else
+#define amba_pm_prepare	NULL
+#define amba_pm_complete	NULL
+#endif
+
+#ifdef CONFIG_SUSPEND
+extern int amba_pm_suspend(struct device *dev);
+extern int amba_pm_suspend_noirq(struct device *dev);
+extern int amba_pm_resume(struct device *dev);
+extern int amba_pm_resume_noirq(struct device *dev);
+#else
+#define amba_pm_suspend		NULL
+#define amba_pm_resume		NULL
+#define amba_pm_suspend_noirq	NULL
+#define amba_pm_resume_noirq	NULL
+#endif
+
+#ifdef CONFIG_HIBERNATE_CALLBACKS
+extern int amba_pm_freeze(struct device *dev);
+extern int amba_pm_freeze_noirq(struct device *dev);
+extern int amba_pm_thaw(struct device *dev);
+extern int amba_pm_thaw_noirq(struct device *dev);
+extern int amba_pm_poweroff(struct device *dev);
+extern int amba_pm_poweroff_noirq(struct device *dev);
+extern int amba_pm_restore(struct device *dev);
+extern int amba_pm_restore_noirq(struct device *dev);
+#else
+#define amba_pm_freeze		NULL
+#define amba_pm_thaw		NULL
+#define amba_pm_poweroff		NULL
+#define amba_pm_restore		NULL
+#define amba_pm_freeze_noirq	NULL
+#define amba_pm_thaw_noirq		NULL
+#define amba_pm_poweroff_noirq	NULL
+#define amba_pm_restore_noirq	NULL
+#endif
+
+#ifdef CONFIG_PM_SLEEP
+#define USE_AMBA_PM_SLEEP_OPS \
+	.prepare = amba_pm_prepare, \
+	.complete = amba_pm_complete, \
+	.suspend = amba_pm_suspend, \
+	.resume = amba_pm_resume, \
+	.freeze = amba_pm_freeze, \
+	.thaw = amba_pm_thaw, \
+	.poweroff = amba_pm_poweroff, \
+	.restore = amba_pm_restore, \
+	.suspend_noirq = amba_pm_suspend_noirq, \
+	.resume_noirq = amba_pm_resume_noirq, \
+	.freeze_noirq = amba_pm_freeze_noirq, \
+	.thaw_noirq = amba_pm_thaw_noirq, \
+	.poweroff_noirq = amba_pm_poweroff_noirq, \
+	.restore_noirq = amba_pm_restore_noirq,
+#else
+#define USE_AMBA_PM_SLEEP_OPS
+#endif
+
 #endif