soundwire: Add support for port management

Add Soundwire port data structures and APIS for initialization
and release of ports.

Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com>
Signed-off-by: Shreyas NC <shreyas.nc@intel.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>

1 files changed, 25 insertions, 0 deletions

diff --git a/drivers/soundwire/bus.h b/drivers/soundwire/bus.h
index 2e5043de9a4b..39e6811e435c 100644
--- a/drivers/soundwire/bus.h
+++ b/drivers/soundwire/bus.h
@@ -46,6 +46,27 @@ struct sdw_msg {
 };
 
 /**
+ * sdw_port_runtime: Runtime port parameters for Master or Slave
+ *
+ * @num: Port number. For audio streams, valid port number ranges from
+ * [1,14]
+ * @ch_mask: Channel mask
+ * @transport_params: Transport parameters
+ * @port_params: Port parameters
+ * @port_node: List node for Master or Slave port_list
+ *
+ * SoundWire spec has no mention of ports for Master interface but the
+ * concept is logically extended.
+ */
+struct sdw_port_runtime {
+	int num;
+	int ch_mask;
+	struct sdw_transport_params transport_params;
+	struct sdw_port_params port_params;
+	struct list_head port_node;
+};
+
+/**
  * sdw_slave_runtime: Runtime Stream parameters for Slave
  *
  * @slave: Slave handle
@@ -53,12 +74,14 @@ struct sdw_msg {
  * @ch_count: Number of channels handled by the Slave for
  * this stream
  * @m_rt_node: sdw_master_runtime list node
+ * @port_list: List of Slave Ports configured for this stream
  */
 struct sdw_slave_runtime {
 	struct sdw_slave *slave;
 	enum sdw_data_direction direction;
 	unsigned int ch_count;
 	struct list_head m_rt_node;
+	struct list_head port_list;
 };
 
 /**
@@ -70,6 +93,7 @@ struct sdw_slave_runtime {
  * @ch_count: Number of channels handled by the Master for
  * this stream, can be zero.
  * @slave_rt_list: Slave runtime list
+ * @port_list: List of Master Ports configured for this stream, can be zero.
  * @bus_node: sdw_bus m_rt_list node
  */
 struct sdw_master_runtime {
@@ -78,6 +102,7 @@ struct sdw_master_runtime {
 	enum sdw_data_direction direction;
 	unsigned int ch_count;
 	struct list_head slave_rt_list;
+	struct list_head port_list;
 	struct list_head bus_node;
 };