drm/amd/display: fix HDMI 12bits last two bits are zero issue

(FF-158) -[FF N-1] HDMI Deep Color Mode incorrect bit depth:
FMT_DYNAMIC_EXP_EN is being reset to 0

Signed-off-by: Charlene Liu <charlene.liu@amd.com>
Reviewed-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c

@@ -1044,14 +1044,14 @@ static enum dc_status apply_single_controller_ctx_to_hw(
 	/*  */
 	dc->hwss.prog_pixclk_crtc_otg(pipe_ctx, context, dc);
 
-	pipe_ctx->stream_res.opp->funcs->opp_set_dyn_expansion(
-			pipe_ctx->stream_res.opp,
-			COLOR_SPACE_YCBCR601,
-			stream->timing.display_color_depth,
-			pipe_ctx->stream->signal);
-
 	/* FPGA does not program backend */
 	if (IS_FPGA_MAXIMUS_DC(dc->ctx->dce_environment)) {
+		pipe_ctx->stream_res.opp->funcs->opp_set_dyn_expansion(
+		pipe_ctx->stream_res.opp,
+		COLOR_SPACE_YCBCR601,
+		stream->timing.display_color_depth,
+		pipe_ctx->stream->signal);
+
 	pipe_ctx->stream_res.opp->funcs->opp_program_fmt(
 			pipe_ctx->stream_res.opp,
 			&stream->bit_depth_params,
@@ -1064,6 +1064,11 @@ static enum dc_status apply_single_controller_ctx_to_hw(
 			BREAK_TO_DEBUGGER();
 			return DC_ERROR_UNEXPECTED;
 		}
+	pipe_ctx->stream_res.opp->funcs->opp_set_dyn_expansion(
+			pipe_ctx->stream_res.opp,
+			COLOR_SPACE_YCBCR601,
+			stream->timing.display_color_depth,
+			pipe_ctx->stream->signal);
 
 	if (pipe_ctx->stream->signal != SIGNAL_TYPE_VIRTUAL)
 		stream->sink->link->link_enc->funcs->setup(

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_opp.c

@@ -240,7 +240,8 @@ static void oppn10_set_dyn_expansion(
 	/*01 - 8-bit  -> 12-bit dynamic expansion*/
 	if (signal == SIGNAL_TYPE_HDMI_TYPE_A ||
 		signal == SIGNAL_TYPE_DISPLAY_PORT ||
-		signal == SIGNAL_TYPE_DISPLAY_PORT_MST) {
+		signal == SIGNAL_TYPE_DISPLAY_PORT_MST ||
+		signal == SIGNAL_TYPE_VIRTUAL) {
 		switch (color_dpth) {
 		case COLOR_DEPTH_888:
 			REG_UPDATE_2(FMT_DYNAMIC_EXP_CNTL,