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soundwire: master: enable pm runtime

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The hierarchy of soundwire devices is platform device -> M device -> S
device. A S device is physically attached on the platform device. So the
platform device should be resumed when a S device is resumed. As the
bridge of platform device and S device, we have to implement runtime pm
on M driver. We have set runtime pm ops in M driver already, but still
need to enable runtime pm.

Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>

Link: https://lore.kernel.org/r/20200726215945.3119-1-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Bard Liao 2020-07-27 05:59:45 +08:00 committed by Vinod Koul
parent 9123e3a74e
commit bd84256e86
1 changed files with 2 additions and 0 deletions
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2
drivers/soundwire/master.c
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@ -154,6 +154,7 @@ int sdw_master_device_add(struct sdw_bus *bus, struct device *parent,
bus->dev = &md->dev; bus->dev = &md->dev;
bus->md = md; bus->md = md;
pm_runtime_enable(&bus->md->dev);
device_register_err: device_register_err:
return ret; return ret;
} }
@ -166,6 +167,7 @@ int sdw_master_device_add(struct sdw_bus *bus, struct device *parent,
*/ */
int sdw_master_device_del(struct sdw_bus *bus) int sdw_master_device_del(struct sdw_bus *bus)
{ {
pm_runtime_disable(&bus->md->dev);
device_unregister(bus->dev); device_unregister(bus->dev);
return 0; return 0;