[PATCH 27/40] drm/amd/display: Indicate stream change on ODM change

[Rodrigo Siqueira]

From: Chris Park <chris.park at amd.com>

[Why]
With ODM policy 2 to 1, there exists a new use case
scenario where stream content is unchanged, but ODM
may be used.  When this happens, the stream needs
to be committed with a new pipe setting.
This did not happen due to stream change
detection logic not accounting for ODM.

[How]
Set ODM flag in stream and commit stream when change
in ODM has been detected due to policy change.

Reviewed-by: Samson Tam <Samson.Tam at amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira at amd.com>
Signed-off-by: Chris Park <chris.park at amd.com>
---
 drivers/gpu/drm/amd/display/dc/core/dc_resource.c | 3 +++
 drivers/gpu/drm/amd/display/dc/dc_stream.h        | 2 ++
 2 files changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
index b67fdb31f75f..3d45f6cae1f7 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
@@ -1702,6 +1702,9 @@ bool dc_is_stream_unchanged(
 	if (memcmp(&old_stream->audio_info, &stream->audio_info, sizeof(stream->audio_info)) != 0)
 		return false;
 
+	if (old_stream->odm_2to1_policy_applied != stream->odm_2to1_policy_applied)
+		return false;
+
 	return true;
 }
 
diff --git a/drivers/gpu/drm/amd/display/dc/dc_stream.h b/drivers/gpu/drm/amd/display/dc/dc_stream.h
index 2a2f719587ee..c3d97206ed89 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_stream.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_stream.h
@@ -276,6 +276,8 @@ struct dc_stream_state {
 	bool has_non_synchronizable_pclk;
 	bool vblank_synchronized;
 	struct mall_stream_config mall_stream_config;
+
+	bool odm_2to1_policy_applied;
 };
 
 #define ABM_LEVEL_IMMEDIATE_DISABLE 255
-- 
2.25.1