drm/amdgpu/powerplay/vega10: enable mclk switching if monitors are synced

If DC has synced the displays, we can enable mclk switching to
save power.

Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c
index 948c54cb9c5d6e951b94471d8ef0d6520f4fc214..d08493b67b67d1d2d67985777ea7003c29593fb6 100644 (file)
--- a/drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c
@@ -3220,7 +3220,8 @@ static int vega10_apply_state_adjust_rules(struct pp_hwmgr *hwmgr,
        if (hwmgr->display_config->num_display == 0)
                disable_mclk_switching = false;
        else
-               disable_mclk_switching = (hwmgr->display_config->num_display > 1) ||
+               disable_mclk_switching = ((1 < hwmgr->display_config->num_display) &&
+                                         !hwmgr->display_config->multi_monitor_in_sync) ||
                        disable_mclk_switching_for_frame_lock ||
                        disable_mclk_switching_for_vr ||
                        force_mclk_high;