soundwire: keep track of Masters in a stream (9b5c132a) · Commits · 戴 / test

A multi link bankswitch can be done if the hardware supports and the stream is handled by multiple Master(s). This preparatory patch adds support to track m_rt in a stream. Modifying m_rt_count and usage is added as part of the next patch. Signed-off-by:

Shreyas NC <shreyas.nc@intel.com> Acked-by:

Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Signed-off-by:

Vinod Koul <vkoul@kernel.org>

drivers/soundwire/stream.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -865,6 +865,7 @@ struct sdw_stream_runtime sdw_alloc_stream(char stream_name)
		stream->name = stream_name;
		INIT_LIST_HEAD(&stream->master_list);
		stream->state = SDW_STREAM_ALLOCATED;
		stream->m_rt_count = 0;

		return stream;
		}

include/linux/soundwire/sdw.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -775,6 +775,7 @@ struct sdw_stream_params {
		* @master_list: List of Master runtime(s) in this stream.
		* master_list can contain only one m_rt per Master instance
		* for a stream
		* @m_rt_count: Count of Master runtime(s) in this stream
		*/
		struct sdw_stream_runtime {
		char *name;
		@@ -782,6 +783,7 @@ struct sdw_stream_runtime {
		enum sdw_stream_state state;
		enum sdw_stream_type type;
		struct list_head master_list;
		int m_rt_count;
		};

		struct sdw_stream_runtime sdw_alloc_stream(char stream_name);

Admin message