drm/amd/display: minior logging improvements

[how]
- Add minimial transition log with reason and base state.
- Do not log set dpms interfaces for virtual signal in stream.
Reviewed-by: Dillon Varone <dillon.varone@amd.com>
Acked-by: Stylon Wang <stylon.wang@amd.com>
Signed-off-by: Wenjing Liu <wenjing.liu@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/core/dc.c

@@ -4069,6 +4069,13 @@ static bool commit_minimal_transition_state(struct dc *dc,
 		return true;
 	}
 
+	DC_LOG_DC("%s base = %s state, reason = %s\n", __func__,
+			dc->current_state == transition_base_context ? "current" : "new",
+			subvp_in_use ? "Subvp In Use" :
+			odm_in_use ? "ODM in Use" :
+			dc->debug.pipe_split_policy != MPC_SPLIT_AVOID ? "MPC in Use" :
+			"Unknown");
+
 	if (!dc->config.is_vmin_only_asic) {
 		tmp_mpc_policy = dc->debug.pipe_split_policy;
 		dc->debug.pipe_split_policy = MPC_SPLIT_AVOID;

drivers/gpu/drm/amd/display/dc/link/link_dpms.c

@@ -2269,6 +2269,8 @@ void link_set_dpms_off(struct pipe_ctx *pipe_ctx)
 
 	if (dp_is_128b_132b_signal(pipe_ctx))
 		vpg = pipe_ctx->stream_res.hpo_dp_stream_enc->vpg;
+	if (dc_is_virtual_signal(pipe_ctx->stream->signal))
+		return;
 
 	DC_LOGGER_INIT(pipe_ctx->stream->ctx->logger);
 
@@ -2281,9 +2283,6 @@ void link_set_dpms_off(struct pipe_ctx *pipe_ctx)
 		}
 	}
 
-	if (dc_is_virtual_signal(pipe_ctx->stream->signal))
-		return;
-
 	if (!pipe_ctx->stream->sink->edid_caps.panel_patch.skip_avmute) {
 		if (dc_is_hdmi_signal(pipe_ctx->stream->signal))
 			set_avmute(pipe_ctx, true);
@@ -2382,6 +2381,8 @@ void link_set_dpms_on(
 
 	if (dp_is_128b_132b_signal(pipe_ctx))
 		vpg = pipe_ctx->stream_res.hpo_dp_stream_enc->vpg;
+	if (dc_is_virtual_signal(pipe_ctx->stream->signal))
+		return;
 
 	DC_LOGGER_INIT(pipe_ctx->stream->ctx->logger);
 
@@ -2394,9 +2395,6 @@ void link_set_dpms_on(
 		}
 	}
 
-	if (dc_is_virtual_signal(pipe_ctx->stream->signal))
-		return;
-
 	link_enc = link_enc_cfg_get_link_enc(link);
 	ASSERT(link_enc);