soundwire: add lane_used_bandwidth in struct sdw_bus

To support multi-lane, we need to know how much bandwidth is used on each lane. And to use the lane that has enough bandwidth. Signed-off-by: Bard Liao <[email protected]>
thesofproject · Apr 26, 2024 · 0f730f4 · 0f730f4
1 parent 0c56628
commit 0f730f4
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/include/linux/soundwire/sdw.h b/include/linux/soundwire/sdw.h
@@ -907,6 +907,7 @@ struct sdw_master_ops {
  * synchronization will be used even if a stream only uses a single
  * SoundWire segment.
  * @stream_refcount: number of streams currently using this bus
+ * @lane_used_bandwidth: how much bandwidth is used by each lane
  */
 struct sdw_bus {
 	struct device *dev;
@@ -937,6 +938,7 @@ struct sdw_bus {
 	bool multi_link;
 	int hw_sync_min_links;
 	int stream_refcount;
+	unsigned int lane_used_bandwidth[SDW_MAX_LANES];
 };
 
 int sdw_bus_master_add(struct sdw_bus *bus, struct device *parent,