drm/amd/display: Add internal display info

[Why & How]
Get internal display info from vbios and pass it to dmub fw to determine
if multiple display optmization is needed.

Signed-off-by: Yongqiang Sun <[e-mail]>
Reviewed-by: Tony Cheng <[e-mail]>
Acked-by: Anthony Koo <[e-mail]>
Acked-by: Aric Cyr <[e-mail]>
Acked-by: Rodrigo Siqueira <[e-mail]>
Signed-off-by: Alex Deucher <[e-mail]>

drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c

···
 	GENERIC_OBJECT_ID_BRACKET_LAYOUT << OBJECT_ID_SHIFT)
 #endif /* GENERICOBJECT_BRACKET_LAYOUT_ENUM_ID2 */
 
+
+//TODO: Remove this temp define after atomfirmware.h is updated.
+#define  ATOM_DISP_CONNECTOR_CAPS_RECORD_TYPE 23
+
+
 #define DC_LOGGER \
 	bp->base.ctx->logger
 
···
 	return NULL;
 }
 
+static struct atom_disp_connector_caps_record *get_disp_connector_caps_record(
+	struct bios_parser *bp,
+	struct atom_display_object_path_v2 *object)
+{
+	struct atom_common_record_header *header;
+	uint32_t offset;
+
+	if (!object) {
+		BREAK_TO_DEBUGGER(); /* Invalid object */
+		return NULL;
+	}
+
+	offset = object->disp_recordoffset + bp->object_info_tbl_offset;
+
+	for (;;) {
+		header = GET_IMAGE(struct atom_common_record_header, offset);
+
+		if (!header)
+			return NULL;
+
+		offset += header->record_size;
+
+		if (header->record_type == LAST_RECORD_TYPE ||
+				!header->record_size)
+			break;
+
+		if (header->record_type != ATOM_DISP_CONNECTOR_CAPS_RECORD_TYPE)
+			continue;
+
+		if (sizeof(struct atom_disp_connector_caps_record) <=
+							header->record_size)
+			return (struct atom_disp_connector_caps_record *)header;
+	}
+
+	return NULL;
+}
+
+static enum bp_result bios_parser_get_disp_connector_caps_info(
+	struct dc_bios *dcb,
+	struct graphics_object_id object_id,
+	struct bp_disp_connector_caps_info *info)
+{
+	struct bios_parser *bp = BP_FROM_DCB(dcb);
+	struct atom_display_object_path_v2 *object;
+	struct atom_disp_connector_caps_record *record = NULL;
+
+	if (!info)
+		return BP_RESULT_BADINPUT;
+
+	object = get_bios_object(bp, object_id);
+
+	if (!object)
+		return BP_RESULT_BADINPUT;
+
+	record = get_disp_connector_caps_record(bp, object);
+	if (!record)
+		return BP_RESULT_NORECORD;
+
+	info->INTERNAL_DISPLAY = (record->connectcaps & ATOM_CONNECTOR_CAP_INTERNAL_DISPLAY)
+									? 1 : 0;
+	info->INTERNAL_DISPLAY_BL = (record->connectcaps & ATOM_CONNECTOR_CAP_INTERNAL_DISPLAY_BL)
+											? 1 : 0;
+
+	return BP_RESULT_OK;
+}
+
 static enum bp_result get_vram_info_v23(
 	struct bios_parser *bp,
 	struct dc_vram_info *info)
···
 	.enable_lvtma_control = bios_parser_enable_lvtma_control,
 
 	.get_soc_bb_info = bios_parser_get_soc_bb_info,
+
+	.get_disp_connector_caps_info = bios_parser_get_disp_connector_caps_info,
 };
 
 static bool bios_parser2_construct(

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

···
 	struct integrated_info info = {{{ 0 }}};
 	struct dc_bios *bios = init_params->dc->ctx->dc_bios;
 	const struct dc_vbios_funcs *bp_funcs = bios->funcs;
+	struct bp_disp_connector_caps_info disp_connect_caps_info = { 0 };
 
 	DC_LOGGER_INIT(dc_ctx->logger);
 
···
 
 	link->link_id =
 		bios->funcs->get_connector_id(bios, init_params->connector_index);
+
+
+	if (bios->funcs->get_disp_connector_caps_info) {
+		bios->funcs->get_disp_connector_caps_info(bios, link->link_id, &disp_connect_caps_info);
+		link->is_internal_display = disp_connect_caps_info.INTERNAL_DISPLAY;
+	}
 
 	if (link->link_id.type != OBJECT_TYPE_CONNECTOR) {
 		dm_output_to_console("%s: Invalid Connector ObjectID from Adapter Service for connector index:%d! type %d expected %d\n",

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

···
 	enum bp_result (*get_soc_bb_info)(
 		struct dc_bios *dcb,
 		struct bp_soc_bb_info *soc_bb_info);
+
+	enum bp_result (*get_disp_connector_caps_info)(
+			struct dc_bios *dcb,
+			struct graphics_object_id object_id,
+			struct bp_disp_connector_caps_info *info);
 };
 
 struct bios_registers {

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

···
 	bool aux_access_disabled;
 	bool sync_lt_in_progress;
 	bool lttpr_non_transparent_mode;
+	bool is_internal_display;
 
 	/* caps is the same as reported_link_cap. link_traing use
 	 * reported_link_cap. Will clean up.  TODO

drivers/gpu/drm/amd/display/include/bios_parser_types.h

···
 	struct spread_spectrum_flags flags;
 };
 
+struct bp_disp_connector_caps_info {
+	uint32_t INTERNAL_DISPLAY    : 1;
+	uint32_t INTERNAL_DISPLAY_BL : 1;
+};
+
 struct bp_encoder_cap_info {
 	uint32_t DP_HBR2_CAP:1;
 	uint32_t DP_HBR2_EN:1;

drivers/gpu/drm/amd/include/atomfirmware.h

···
   ATOM_ENCODER_CAP_RECORD_TYPE=20,
   ATOM_BRACKET_LAYOUT_RECORD_TYPE=21,
   ATOM_CONNECTOR_FORCED_TMDS_CAP_RECORD_TYPE=22,
+  ATOM_DISP_CONNECTOR_CAPS_RECORD_TYPE=23,
   ATOM_RECORD_END_TYPE  =0xFF,
 };