drm/amd/display: Refactor FPGA-specific link setup

FPGA doesn't program backend, so we don't need certain link settings
(audio stream for example).

Signed-off-by: Nikola Cornij <nikola.cornij@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -2559,23 +2559,24 @@ void core_link_enable_stream(
 			pipe_ctx->stream_res.stream_enc,
 			&stream->timing);
 
-	resource_build_info_frame(pipe_ctx);
-	core_dc->hwss.update_info_frame(pipe_ctx);
-
-	/* eDP lit up by bios already, no need to enable again. */
-	if (pipe_ctx->stream->signal == SIGNAL_TYPE_EDP &&
-			pipe_ctx->stream->apply_edp_fast_boot_optimization) {
-		pipe_ctx->stream->apply_edp_fast_boot_optimization = false;
-		pipe_ctx->stream->dpms_off = false;
-		return;
-	}
+	if (!IS_FPGA_MAXIMUS_DC(core_dc->ctx->dce_environment)) {
+		resource_build_info_frame(pipe_ctx);
+		core_dc->hwss.update_info_frame(pipe_ctx);
+
+		/* eDP lit up by bios already, no need to enable again. */
+		if (pipe_ctx->stream->signal == SIGNAL_TYPE_EDP &&
+				pipe_ctx->stream->apply_edp_fast_boot_optimization) {
+			pipe_ctx->stream->apply_edp_fast_boot_optimization = false;
+			pipe_ctx->stream->dpms_off = false;
+			return;
+		}
 
-	if (pipe_ctx->stream->dpms_off)
-		return;
+		if (pipe_ctx->stream->dpms_off)
+			return;
 
-	status = enable_link(state, pipe_ctx);
+		status = enable_link(state, pipe_ctx);
 
-	if (status != DC_OK) {
+		if (status != DC_OK) {
 			DC_LOG_WARNING("enabling link %u failed: %d\n",
 			pipe_ctx->stream->sink->link->link_index,
 			status);
@@ -2590,23 +2591,26 @@ void core_link_enable_stream(
 				BREAK_TO_DEBUGGER();
 				return;
 			}
-	}
+		}
 
-	core_dc->hwss.enable_audio_stream(pipe_ctx);
+		core_dc->hwss.enable_audio_stream(pipe_ctx);
 
-	/* turn off otg test pattern if enable */
-	if (pipe_ctx->stream_res.tg->funcs->set_test_pattern)
-		pipe_ctx->stream_res.tg->funcs->set_test_pattern(pipe_ctx->stream_res.tg,
-				CONTROLLER_DP_TEST_PATTERN_VIDEOMODE,
-				COLOR_DEPTH_UNDEFINED);
+		/* turn off otg test pattern if enable */
+		if (pipe_ctx->stream_res.tg->funcs->set_test_pattern)
+			pipe_ctx->stream_res.tg->funcs->set_test_pattern(pipe_ctx->stream_res.tg,
+					CONTROLLER_DP_TEST_PATTERN_VIDEOMODE,
+					COLOR_DEPTH_UNDEFINED);
 
-	core_dc->hwss.enable_stream(pipe_ctx);
+		core_dc->hwss.enable_stream(pipe_ctx);
 
-	if (pipe_ctx->stream->signal == SIGNAL_TYPE_DISPLAY_PORT_MST)
-		allocate_mst_payload(pipe_ctx);
+		if (pipe_ctx->stream->signal == SIGNAL_TYPE_DISPLAY_PORT_MST)
+			allocate_mst_payload(pipe_ctx);
+
+		core_dc->hwss.unblank_stream(pipe_ctx,
+			&pipe_ctx->stream->sink->link->cur_link_settings);
+
+	}
 
-	core_dc->hwss.unblank_stream(pipe_ctx,
-		&pipe_ctx->stream->sink->link->cur_link_settings);
 }
 
 void core_link_disable_stream(struct pipe_ctx *pipe_ctx, int option)

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

@@ -1377,26 +1377,13 @@ static enum dc_status apply_single_controller_ctx_to_hw(
 	/*  */
 	dc->hwss.enable_stream_timing(pipe_ctx, context, dc);
 
-	/* 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,
-			&stream->clamping);
-		return DC_OK;
-	}
 	/* TODO: move to stream encoder */
 	if (pipe_ctx->stream->signal != SIGNAL_TYPE_VIRTUAL)
 		if (DC_OK != bios_parser_crtc_source_select(pipe_ctx)) {
 			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,

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c

@@ -44,6 +44,7 @@
 #include "dcn10_hubp.h"
 #include "dcn10_hubbub.h"
 #include "dcn10_cm_common.h"
+#include "dc_link_dp.h"
 
 #define DC_LOGGER_INIT(logger)