diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/bios/bios_parser.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/bios/bios_parser.c | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/bios/bios_parser.c b/drivers/gpu/drm/amd/display/dc/bios/bios_parser.c index c7f0b27e457e..be8a2494355a 100644 --- a/drivers/gpu/drm/amd/display/dc/bios/bios_parser.c +++ b/drivers/gpu/drm/amd/display/dc/bios/bios_parser.c @@ -3762,6 +3762,200 @@ static struct integrated_info *bios_parser_create_integrated_info( return NULL; } +enum bp_result update_slot_layout_info( + struct dc_bios *dcb, + unsigned int i, + struct slot_layout_info *slot_layout_info, + unsigned int record_offset) +{ + unsigned int j; + struct bios_parser *bp; + ATOM_BRACKET_LAYOUT_RECORD *record; + ATOM_COMMON_RECORD_HEADER *record_header; + enum bp_result result = BP_RESULT_NORECORD; + + bp = BP_FROM_DCB(dcb); + record = NULL; + record_header = NULL; + + for (;;) { + + record_header = (ATOM_COMMON_RECORD_HEADER *) + GET_IMAGE(ATOM_COMMON_RECORD_HEADER, record_offset); + if (record_header == NULL) { + result = BP_RESULT_BADBIOSTABLE; + break; + } + + /* the end of the list */ + if (record_header->ucRecordType == 0xff || + record_header->ucRecordSize == 0) { + break; + } + + if (record_header->ucRecordType == + ATOM_BRACKET_LAYOUT_RECORD_TYPE && + sizeof(ATOM_BRACKET_LAYOUT_RECORD) + <= record_header->ucRecordSize) { + record = (ATOM_BRACKET_LAYOUT_RECORD *) + (record_header); + result = BP_RESULT_OK; + break; + } + + record_offset += record_header->ucRecordSize; + } + + /* return if the record not found */ + if (result != BP_RESULT_OK) + return result; + + /* get slot sizes */ + slot_layout_info->length = record->ucLength; + slot_layout_info->width = record->ucWidth; + + /* get info for each connector in the slot */ + slot_layout_info->num_of_connectors = record->ucConnNum; + for (j = 0; j < slot_layout_info->num_of_connectors; ++j) { + slot_layout_info->connectors[j].connector_type = + (enum connector_layout_type) + (record->asConnInfo[j].ucConnectorType); + switch (record->asConnInfo[j].ucConnectorType) { + case CONNECTOR_TYPE_DVI_D: + slot_layout_info->connectors[j].connector_type = + CONNECTOR_LAYOUT_TYPE_DVI_D; + slot_layout_info->connectors[j].length = + CONNECTOR_SIZE_DVI; + break; + + case CONNECTOR_TYPE_HDMI: + slot_layout_info->connectors[j].connector_type = + CONNECTOR_LAYOUT_TYPE_HDMI; + slot_layout_info->connectors[j].length = + CONNECTOR_SIZE_HDMI; + break; + + case CONNECTOR_TYPE_DISPLAY_PORT: + slot_layout_info->connectors[j].connector_type = + CONNECTOR_LAYOUT_TYPE_DP; + slot_layout_info->connectors[j].length = + CONNECTOR_SIZE_DP; + break; + + case CONNECTOR_TYPE_MINI_DISPLAY_PORT: + slot_layout_info->connectors[j].connector_type = + CONNECTOR_LAYOUT_TYPE_MINI_DP; + slot_layout_info->connectors[j].length = + CONNECTOR_SIZE_MINI_DP; + break; + + default: + slot_layout_info->connectors[j].connector_type = + CONNECTOR_LAYOUT_TYPE_UNKNOWN; + slot_layout_info->connectors[j].length = + CONNECTOR_SIZE_UNKNOWN; + } + + slot_layout_info->connectors[j].position = + record->asConnInfo[j].ucPosition; + slot_layout_info->connectors[j].connector_id = + object_id_from_bios_object_id( + record->asConnInfo[j].usConnectorObjectId); + } + return result; +} + + +enum bp_result get_bracket_layout_record( + struct dc_bios *dcb, + unsigned int bracket_layout_id, + struct slot_layout_info *slot_layout_info) +{ + unsigned int i; + unsigned int record_offset; + struct bios_parser *bp; + enum bp_result result; + ATOM_OBJECT *object; + ATOM_OBJECT_TABLE *object_table; + unsigned int genericTableOffset; + + bp = BP_FROM_DCB(dcb); + object = NULL; + if (slot_layout_info == NULL) { + DC_LOG_DETECTION_EDID_PARSER("Invalid slot_layout_info\n"); + return BP_RESULT_BADINPUT; + } + + + genericTableOffset = bp->object_info_tbl_offset + + bp->object_info_tbl.v1_3->usMiscObjectTableOffset; + object_table = (ATOM_OBJECT_TABLE *) + GET_IMAGE(ATOM_OBJECT_TABLE, genericTableOffset); + if (!object_table) + return BP_RESULT_FAILURE; + + result = BP_RESULT_NORECORD; + for (i = 0; i < object_table->ucNumberOfObjects; ++i) { + + if (bracket_layout_id == + object_table->asObjects[i].usObjectID) { + + object = &object_table->asObjects[i]; + record_offset = object->usRecordOffset + + bp->object_info_tbl_offset; + + result = update_slot_layout_info(dcb, i, + slot_layout_info, record_offset); + break; + } + } + return result; +} + +static enum bp_result bios_get_board_layout_info( + struct dc_bios *dcb, + struct board_layout_info *board_layout_info) +{ + unsigned int i; + struct bios_parser *bp; + enum bp_result record_result; + + const unsigned int slot_index_to_vbios_id[MAX_BOARD_SLOTS] = { + GENERICOBJECT_BRACKET_LAYOUT_ENUM_ID1, + GENERICOBJECT_BRACKET_LAYOUT_ENUM_ID2, + 0, 0 + }; + + bp = BP_FROM_DCB(dcb); + if (board_layout_info == NULL) { + DC_LOG_DETECTION_EDID_PARSER("Invalid board_layout_info\n"); + return BP_RESULT_BADINPUT; + } + + board_layout_info->num_of_slots = 0; + + for (i = 0; i < MAX_BOARD_SLOTS; ++i) { + record_result = get_bracket_layout_record(dcb, + slot_index_to_vbios_id[i], + &board_layout_info->slots[i]); + + if (record_result == BP_RESULT_NORECORD && i > 0) + break; /* no more slots present in bios */ + else if (record_result != BP_RESULT_OK) + return record_result; /* fail */ + + ++board_layout_info->num_of_slots; + } + + /* all data is valid */ + board_layout_info->is_number_of_slots_valid = 1; + board_layout_info->is_slots_size_valid = 1; + board_layout_info->is_connector_offsets_valid = 1; + board_layout_info->is_connector_lengths_valid = 1; + + return BP_RESULT_OK; +} + /******************************************************************************/ static const struct dc_vbios_funcs vbios_funcs = { @@ -3836,6 +4030,8 @@ static const struct dc_vbios_funcs vbios_funcs = { .post_init = bios_parser_post_init, /* patch vbios table for mxm module by reading i2c */ .bios_parser_destroy = bios_parser_destroy, + + .get_board_layout_info = bios_get_board_layout_info, }; static bool bios_parser_construct( |