From: Shreyas NC <shreyas.nc@xxxxxxxxx>
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.
Signed-off-by: Shreyas NC <shreyas.nc@xxxxxxxxx>
Signed-off-by: Sanyog Kale <sanyog.r.kale@xxxxxxxxx>
---
drivers/soundwire/stream.c | 2 ++
include/linux/soundwire/sdw.h | 2 ++
2 files changed, 4 insertions(+)
diff --git a/drivers/soundwire/stream.c b/drivers/soundwire/stream.c
index 7e75a400d03e..539b98ec18d9 100644
--- a/drivers/soundwire/stream.c
+++ b/drivers/soundwire/stream.c
@@ -759,6 +759,7 @@ 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;
}
@@ -963,6 +964,7 @@ int sdw_stream_remove_master(struct sdw_bus *bus,
sdw_master_port_release(bus, m_rt);
sdw_release_master_stream(m_rt, stream);
+ stream->m_rt_count--;
}
if (list_empty(&stream->master_list))
diff --git a/include/linux/soundwire/sdw.h b/include/linux/soundwire/sdw.h
index 03df709fb8ef..214e14604d9f 100644
--- a/include/linux/soundwire/sdw.h
+++ b/include/linux/soundwire/sdw.h
@@ -771,6 +771,7 @@ 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;
@@ -778,6 +779,7 @@ 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);
--
2.13.0
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