drm/amd/display: Refactor edp dsc codes.

Refactor edp dsc codes.

We split out edp dsc config from "global" to "per-panel" config settings.
Reviewed-by: Mike Hsieh <mike.hsieh@amd.com>
Acked-by: Brian Chang <Brian.Chang@amd.com>
Signed-off-by: Ian Chen <ian.chen@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c

@@ -1529,7 +1529,6 @@ static int amdgpu_dm_init(struct amdgpu_device *adev)
 
 	if (amdgpu_dc_debug_mask & DC_DISABLE_DSC) {
 		adev->dm.dc->debug.disable_dsc = true;
-		adev->dm.dc->debug.disable_dsc_edp = true;
 	}
 
 	if (amdgpu_dc_debug_mask & DC_DISABLE_CLOCK_GATING)
@@ -5629,7 +5628,8 @@ static void apply_dsc_policy_for_stream(struct amdgpu_dm_connector *aconnector,
 	dc_dsc_policy_set_enable_dsc_when_not_needed(
 		aconnector->dsc_settings.dsc_force_enable == DSC_CLK_FORCE_ENABLE);
 
-	if (aconnector->dc_link && sink->sink_signal == SIGNAL_TYPE_EDP && !dc->debug.disable_dsc_edp &&
+	if (aconnector->dc_link && sink->sink_signal == SIGNAL_TYPE_EDP &&
+	    !aconnector->dc_link->panel_config.dsc.disable_dsc_edp &&
 	    dc->caps.edp_dsc_support && aconnector->dsc_settings.dsc_force_enable != DSC_CLK_FORCE_DISABLE) {
 
 		apply_dsc_policy_for_edp(aconnector, sink, stream, dsc_caps, max_dsc_target_bpp_limit_override);

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c

@@ -916,6 +916,25 @@ void dm_helpers_smu_timeout(struct dc_context *ctx, unsigned int msg_id, unsigne
 	//amdgpu_device_gpu_recover(dc_context->driver-context, NULL);
 }
 
+void dm_helpers_init_panel_settings(
+	struct dc_context *ctx,
+	struct dc_panel_config *panel_config)
+{
+	// Feature DSC
+	panel_config->dsc.disable_dsc_edp = false;
+	panel_config->dsc.force_dsc_edp_policy = 0;
+}
+
+void dm_helpers_override_panel_settings(
+	struct dc_context *ctx,
+	struct dc_panel_config *panel_config)
+{
+	// Feature DSC
+	if (amdgpu_dc_debug_mask & DC_DISABLE_DSC) {
+		panel_config->dsc.disable_dsc_edp = true;
+	}
+}
+
 void *dm_helpers_allocate_gpu_mem(
 		struct dc_context *ctx,
 		enum dc_gpu_mem_alloc_type type,

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

@@ -1311,6 +1311,14 @@ static bool detect_link_and_local_sink(struct dc_link *link,
 				sink->edid_caps.audio_modes[i].sample_rate,
 				sink->edid_caps.audio_modes[i].sample_size);
 		}
+
+		if (link->connector_signal == SIGNAL_TYPE_EDP) {
+			// Init dc_panel_config
+			dm_helpers_init_panel_settings(dc_ctx, &link->panel_config);
+			// Override dc_panel_config if system has specific settings
+			dm_helpers_override_panel_settings(dc_ctx, &link->panel_config);
+		}
+
 	} else {
 		/* From Connected-to-Disconnected. */
 		link->type = dc_connection_none;
@@ -4736,7 +4744,7 @@ bool dc_link_should_enable_fec(const struct dc_link *link)
 	else if (link->connector_signal == SIGNAL_TYPE_EDP
 			&& (link->dpcd_caps.dsc_caps.dsc_basic_caps.fields.
 			 dsc_support.DSC_SUPPORT == false
-				|| link->dc->debug.disable_dsc_edp
+				|| link->panel_config.dsc.disable_dsc_edp
 				|| !link->dc->caps.edp_dsc_support))
 		force_disable = true;
 

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

@@ -3743,7 +3743,7 @@ static bool decide_edp_link_settings_with_dsc(struct dc_link *link,
 
 	unsigned int policy = 0;
 
-	policy = link->ctx->dc->debug.force_dsc_edp_policy;
+	policy = link->panel_config.dsc.force_dsc_edp_policy;
 	if (max_link_rate == LINK_RATE_UNKNOWN)
 		max_link_rate = link->verified_link_cap.link_rate;
 	/*
@@ -3909,7 +3909,7 @@ bool decide_link_settings(struct dc_stream_state *stream,
 		if (stream->timing.flags.DSC) {
 			enum dc_link_rate max_link_rate = LINK_RATE_UNKNOWN;
 
-			if (link->ctx->dc->debug.force_dsc_edp_policy) {
+			if (link->panel_config.dsc.force_dsc_edp_policy) {
 				/* calculate link max link rate cap*/
 				struct dc_link_settings tmp_link_setting;
 				struct dc_crtc_timing tmp_timing = stream->timing;

drivers/gpu/drm/amd/display/dc/dc.h

@@ -802,8 +802,6 @@ struct dc_debug_options {
 	bool validate_dml_output;
 	bool enable_dmcub_surface_flip;
 	bool usbc_combo_phy_reset_wa;
-	bool disable_dsc_edp;
-	unsigned int  force_dsc_edp_policy;
 	bool enable_dram_clock_change_one_display_vactive;
 	/* TODO - remove once tested */
 	bool legacy_dp2_lt;

drivers/gpu/drm/amd/display/dc/dc_link.h

@@ -113,6 +113,15 @@ struct psr_settings {
 	unsigned int psr_power_opt;
 };
 
+/* To split out "global" and "per-panel" config settings.
+ * Add a struct dc_panel_config under dc_link
+ */
+struct dc_panel_config {
+	struct dsc {
+		bool disable_dsc_edp;
+		unsigned int force_dsc_edp_policy;
+	} dsc;
+};
 /*
  * A link contains one or more sinks and their connected status.
  * The currently active signal type (HDMI, DP-SST, DP-MST) is also reported.
@@ -233,6 +242,7 @@ struct dc_link {
 
 	struct gpio *hpd_gpio;
 	enum dc_link_fec_state fec_state;
+	struct dc_panel_config panel_config;
 	enum phy_state phy_state;
 };
 

drivers/gpu/drm/amd/display/dc/dm_helpers.h

@@ -171,7 +171,12 @@ void dm_helpers_smu_timeout(struct dc_context *ctx, unsigned int msg_id, unsigne
 // 0x1 = Result_OK, 0xFE = Result_UnkmownCmd, 0x0 = Status_Busy
 #define IS_SMU_TIMEOUT(result) \
 	(result == 0x0)
-
+void dm_helpers_init_panel_settings(
+	struct dc_context *ctx,
+	struct dc_panel_config *config);
+void dm_helpers_override_panel_settings(
+	struct dc_context *ctx,
+	struct dc_panel_config *config);
 int dm_helper_dmub_aux_transfer_sync(
 		struct dc_context *ctx,
 		const struct dc_link *link,