drm/amd/display: always switch off ODM before committing more streams

ODM power optimization is only supported with single stream. When ODM
power optimization is enabled, we might not have enough free pipes for
enabling other stream. So when we are committing more than 1 stream we
should first switch off ODM power optimization to make room for new
stream and then allocating pipe resource for the new stream.

Cc: stable@vger.kernel.org
Fixes: 59de751e3845 ("drm/amd/display: add ODM case when looking for first split pipe")
Reviewed-by: Dillon Varone <dillon.varone@amd.com>
Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Wenjing Liu <wenjing.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index 54da304..3a9077b 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -2073,12 +2073,12 @@ enum dc_status dc_commit_streams(struct dc *dc,
                }
        }
 
-       /* Check for case where we are going from odm 2:1 to max
-        *  pipe scenario.  For these cases, we will call
-        *  commit_minimal_transition_state() to exit out of odm 2:1
-        *  first before processing new streams
+       /* ODM Combine 2:1 power optimization is only applied for single stream
+        * scenario, it uses extra pipes than needed to reduce power consumption
+        * We need to switch off this feature to make room for new streams.
         */
-       if (stream_count == dc->res_pool->pipe_count) {
+       if (stream_count > dc->current_state->stream_count &&
+                       dc->current_state->stream_count == 1) {
                for (i = 0; i < dc->res_pool->pipe_count; i++) {
                        pipe = &dc->current_state->res_ctx.pipe_ctx[i];
                        if (pipe->next_odm_pipe)