This helper is useful to make sure that the resume stages wait for the
device to be fully initialized, not just enumerated.
Depending on how initialization is handled, a Slave device driver may
wait for enumeration_complete, or for initialization_complete, both
are valid synchronization points.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx>
---
include/linux/soundwire/sdw.h | 3 +++
1 file changed, 3 insertions(+)
diff --git a/include/linux/soundwire/sdw.h b/include/linux/soundwire/sdw.h
index 2c6688eb4c09..6d667224ae8f 100644
--- a/include/linux/soundwire/sdw.h
+++ b/include/linux/soundwire/sdw.h
@@ -552,6 +552,8 @@ struct sdw_slave_ops {
* @enumeration_complete: completion utility to control potential races
* on startup between device enumeration and read/write access to the
* Slave device
+ * @initialization_complete: completion utility to control potential races
+ * on startup between device enumeration and settings being restored
*/
struct sdw_slave {
struct sdw_slave_id id;
@@ -569,6 +571,7 @@ struct sdw_slave {
bool probed;
struct completion probe_complete;
struct completion enumeration_complete;
+ struct completion initialization_complete;
};
#define dev_to_sdw_dev(_dev) container_of(_dev, struct sdw_slave, dev)
--
2.20.1
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