[alsa-devel] [PATCH] ALSA: aoa-soundbus: Switch to dev_pm_ops

[Lars-Peter Clausen]

Update the aoa-soundbus framework to use dev_pm_ops rather than the
deprecated legacy suspend and resume callbacks.

Since there isn't anything special to do at the bus level the bus driver
does not have to implement any callbacks. The device driver core will
automatically pick up and execute the device's PM ops.

As there is only a single aoa-soundbus driver implementing suspend and
resume, update both the core and driver at the same time to avoid
unnecessary code churn.

Signed-off-by: Lars-Peter Clausen <lars at metafoo.de>
---
 sound/aoa/fabrics/layout.c    | 21 ++++++++++++---------
 sound/aoa/soundbus/core.c     | 28 ----------------------------
 sound/aoa/soundbus/soundbus.h |  2 --
 3 files changed, 12 insertions(+), 39 deletions(-)

diff --git a/sound/aoa/fabrics/layout.c b/sound/aoa/fabrics/layout.c
index 9dc5806..8f71f7e 100644
--- a/sound/aoa/fabrics/layout.c
+++ b/sound/aoa/fabrics/layout.c
@@ -1120,10 +1120,10 @@ static int aoa_fabric_layout_remove(struct soundbus_dev *sdev)
 	return 0;
 }
 
-#ifdef CONFIG_PM
-static int aoa_fabric_layout_suspend(struct soundbus_dev *sdev, pm_message_t state)
+#ifdef CONFIG_PM_SLEEP
+static int aoa_fabric_layout_suspend(struct device *dev)
 {
-	struct layout_dev *ldev = dev_get_drvdata(&sdev->ofdev.dev);
+	struct layout_dev *ldev = dev_get_drvdata(dev);
 
 	if (ldev->gpio.methods && ldev->gpio.methods->all_amps_off)
 		ldev->gpio.methods->all_amps_off(&ldev->gpio);
@@ -1131,15 +1131,19 @@ static int aoa_fabric_layout_suspend(struct soundbus_dev *sdev, pm_message_t sta
 	return 0;
 }
 
-static int aoa_fabric_layout_resume(struct soundbus_dev *sdev)
+static int aoa_fabric_layout_resume(struct device *dev)
 {
-	struct layout_dev *ldev = dev_get_drvdata(&sdev->ofdev.dev);
+	struct layout_dev *ldev = dev_get_drvdata(dev);
 
 	if (ldev->gpio.methods && ldev->gpio.methods->all_amps_restore)
 		ldev->gpio.methods->all_amps_restore(&ldev->gpio);
 
 	return 0;
 }
+
+static SIMPLE_DEV_PM_OPS(aoa_fabric_layout_pm_ops,
+	aoa_fabric_layout_suspend, aoa_fabric_layout_resume);
+
 #endif
 
 static struct soundbus_driver aoa_soundbus_driver = {
@@ -1147,12 +1151,11 @@ static struct soundbus_driver aoa_soundbus_driver = {
 	.owner = THIS_MODULE,
 	.probe = aoa_fabric_layout_probe,
 	.remove = aoa_fabric_layout_remove,
-#ifdef CONFIG_PM
-	.suspend = aoa_fabric_layout_suspend,
-	.resume = aoa_fabric_layout_resume,
-#endif
 	.driver = {
 		.owner = THIS_MODULE,
+#ifdef CONFIG_PM_SLEEP
+		.pm = &aoa_fabric_layout_pm_ops,
+#endif
 	}
 };
 
diff --git a/sound/aoa/soundbus/core.c b/sound/aoa/soundbus/core.c
index 3edf736..70bcaa7 100644
--- a/sound/aoa/soundbus/core.c
+++ b/sound/aoa/soundbus/core.c
@@ -126,30 +126,6 @@ static void soundbus_device_shutdown(struct device *dev)
 		drv->shutdown(soundbus_dev);
 }
 
-#ifdef CONFIG_PM
-
-static int soundbus_device_suspend(struct device *dev, pm_message_t state)
-{
-	struct soundbus_dev * soundbus_dev = to_soundbus_device(dev);
-	struct soundbus_driver * drv = to_soundbus_driver(dev->driver);
-
-	if (dev->driver && drv->suspend)
-		return drv->suspend(soundbus_dev, state);
-	return 0;
-}
-
-static int soundbus_device_resume(struct device * dev)
-{
-	struct soundbus_dev * soundbus_dev = to_soundbus_device(dev);
-	struct soundbus_driver * drv = to_soundbus_driver(dev->driver);
-
-	if (dev->driver && drv->resume)
-		return drv->resume(soundbus_dev);
-	return 0;
-}
-
-#endif /* CONFIG_PM */
-
 /* soundbus_dev_attrs is declared in sysfs.c */
 ATTRIBUTE_GROUPS(soundbus_dev);
 static struct bus_type soundbus_bus_type = {
@@ -158,10 +134,6 @@ static struct bus_type soundbus_bus_type = {
 	.uevent		= soundbus_uevent,
 	.remove		= soundbus_device_remove,
 	.shutdown	= soundbus_device_shutdown,
-#ifdef CONFIG_PM
-	.suspend	= soundbus_device_suspend,
-	.resume		= soundbus_device_resume,
-#endif
 	.dev_groups	= soundbus_dev_groups,
 };
 
diff --git a/sound/aoa/soundbus/soundbus.h b/sound/aoa/soundbus/soundbus.h
index 21e756c..ae40224 100644
--- a/sound/aoa/soundbus/soundbus.h
+++ b/sound/aoa/soundbus/soundbus.h
@@ -188,8 +188,6 @@ struct soundbus_driver {
 	int	(*probe)(struct soundbus_dev* dev);
 	int	(*remove)(struct soundbus_dev* dev);
 
-	int	(*suspend)(struct soundbus_dev* dev, pm_message_t state);
-	int	(*resume)(struct soundbus_dev* dev);
 	int	(*shutdown)(struct soundbus_dev* dev);
 
 	struct device_driver driver;
-- 
2.1.4