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 <yongqiang.sun@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Anthony Koo <Anthony.Koo@amd.com>
Acked-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 73 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c b/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c
index 1782ff5542e9..90d5b320f1ac 100644
--- a/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c
+++ b/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c
@@ -65,6 +65,11 @@
 	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
 
@@ -1455,6 +1460,72 @@ static struct atom_encoder_caps_record *get_encoder_cap_record(
 	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)
@@ -2463,6 +2534,8 @@ static const struct dc_vbios_funcs vbios_funcs = {
 	.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(