dm_test_par...db_null_edid(9)
π NAME π
okay so bestie, welcome to dm_test_par...db_null_edid(9) β a page from the Kernel API Manual (yes, the title's literally abbreviated like that, we don't make the rules) β and it does exactly one iconic thing:
dm_test_parse_hdmi_amd_vsdb_null_edid β Test NULL EDID returns -ENODEV β¨
that's it. that's the whole gig. one test, one vibe check, one very specific assertion. and honestly? she ate. π
β¨ SYNOPSIS β¨
void dm_test_parse_hdmi_amd_vsdb_null_edid (struct kunit *test );
that's the whole signature, fr fr. yes, there's a space before that closing paren in the original β we keep it exactly as it is, no cap, character for character. π«Ά
πΈ ARGUMENTS πΈ
testβ The KUnit test context. this is the lil' test harness buddy that gets passed in, the main character energy of the whole function. π§
π SEE ALSO π
okay buckle up bestie, this is the long part β one file, and then an entire extended universe of sibling tests. every single one, right here, no skipping, because we don't do that. π
Kernel file:
./drivers/gpu/drm/amd/display/amdgpu_dm/tests/amdgpu_dm_connector_test.c
and the whole friend group:
dm_test_subconnector_type_none(9),dm_test_subconnector_type_vga(9),dm_test_subconnector_type_dvi_converter(9),dm_test_subconnector_type_dvi_dongle(9),dm_test_subconnector_type_hdmi_converter(9),dm_test_subconnector_type_hdmi_dongle(9),dm_test_subconnector_type_mismatched(9),dm_test_subconnector_type_default_unknown(9)dm_test_content_type_no_data(9),dm_test_content_type_graphics(9),dm_test_content_type_photo(9),dm_test_content_type_cinema(9),dm_test_content_type_game(9),dm_test_content_type_unknown_defaults_no_data(9)dm_test_adjust_colour_depth_fits_at_888(9),dm_test_adjust_colour_depth_reduces_to_888(9),dm_test_adjust_colour_depth_10bpc_passes(9),dm_test_adjust_colour_depth_420_halves_clk(9),dm_test_adjust_colour_depth_420_reduces(9),dm_test_adjust_colour_depth_reduces_12bpc_to_10bpc(9),dm_test_adjust_colour_depth_16bpc_no_fallback(9),dm_test_adjust_colour_depth_none_fits(9),dm_test_adjust_colour_depth_invalid_depth(9)dm_test_output_color_space_default_rgb_full(9),dm_test_output_color_space_default_rgb_limited(9),dm_test_output_color_space_default_ycbcr709(9),dm_test_output_color_space_default_ycbcr601_limited(9),dm_test_output_color_space_bt601_y_only(9),dm_test_output_color_space_bt601(9),dm_test_output_color_space_bt709(9),dm_test_output_color_space_bt709_y_only(9),dm_test_output_color_space_oprgb(9),dm_test_output_color_space_bt2020_rgb(9),dm_test_output_color_space_bt2020_rgb_limited(9),dm_test_output_color_space_default_rgb_auto_hdmi_cta(9),dm_test_output_color_space_default_rgb_auto_hdmi_vga(9),dm_test_output_color_space_default_rgb_auto_dp_cta(9),dm_test_output_color_space_default_rgb_full_hdmi_cta(9),dm_test_output_color_space_bt2020_rgb_auto_hdmi_cta(9),dm_test_output_color_space_bt2020_ycc(9),dm_test_output_color_space_default_ycbcr709_y_only(9),dm_test_output_color_space_default_ycbcr601(9),dm_test_output_color_space_bt2020_ycc_rgb_encoding(9),dm_test_output_color_space_bt2020_ycc_rgb_encoding_limited(9),dm_test_output_color_space_bt2020_rgb_ycc_encoding(9)dm_test_convert_color_depth_bpc_mappings(9),dm_test_convert_color_depth_bpc_unknown(9),dm_test_color_depth_from_info_bpc8(9),dm_test_color_depth_from_info_bpc10(9),dm_test_color_depth_from_info_zero_bpc_defaults_888(9),dm_test_color_depth_from_info_requested_bpc_caps(9),dm_test_color_depth_from_info_y420_default(9),dm_test_color_depth_from_info_y420_10bpc(9),dm_test_color_depth_from_info_y420_12bpc(9),dm_test_color_depth_from_info_y420_16bpc(9),dm_test_color_depth_from_info_requested_odd_bpc(9),dm_test_color_depth_from_info_unsupported_bpc(9)dm_test_to_connector_type_hdmi(9),dm_test_to_connector_type_edp(9),dm_test_to_connector_type_lvds(9),dm_test_to_connector_type_rgb(9),dm_test_to_connector_type_dp(9),dm_test_to_connector_type_dp_mst(9),dm_test_to_connector_type_dvi_dvii(9),dm_test_to_connector_type_dual_link_dvii(9),dm_test_to_connector_type_dvi_dvid(9),dm_test_to_connector_type_dual_link_dvid(9),dm_test_to_connector_type_virtual(9),dm_test_to_connector_type_unknown(9)dm_test_is_duplicate_mode_empty_list(9),dm_test_is_duplicate_mode_match(9),dm_test_is_duplicate_mode_no_match(9),dm_test_is_duplicate_mode_same_size_different_clock(9)dm_test_encoder_crtc_mask_1(9),dm_test_encoder_crtc_mask_2(9),dm_test_encoder_crtc_mask_3(9),dm_test_encoder_crtc_mask_4(9),dm_test_encoder_crtc_mask_5(9),dm_test_encoder_crtc_mask_6(9),dm_test_encoder_crtc_mask_default(9)dm_test_aspect_ratio_no_data(9),dm_test_aspect_ratio_4_3(9),dm_test_aspect_ratio_16_9(9),dm_test_aspect_ratio_64_27(9),dm_test_aspect_ratio_256_135(9)dm_test_copy_crtc_timing_copies_all_fields(9),dm_test_copy_crtc_timing_leaves_non_crtc_fields(9)dm_test_decide_crtc_timing_scale_enabled(9),dm_test_decide_crtc_timing_matching_mode(9),dm_test_decide_crtc_timing_no_copy(9),dm_test_decide_crtc_timing_no_crtc_clock(9)dm_test_funcs_reset_sets_defaults(9),dm_test_funcs_reset_edp_abm_level(9),dm_test_funcs_reset_edp_abm_disabled(9)dm_test_atomic_dup_state_copies_fields(9)dm_test_fill_hdr_null_metadata(9),dm_test_fill_hdr_zeroes_output(9)dm_test_set_property_scaling_center(9),dm_test_set_property_scaling_aspect(9),dm_test_set_property_scaling_fullscreen(9),dm_test_set_property_scaling_none(9),dm_test_set_property_scaling_unchanged(9),dm_test_set_property_underscan_hborder(9),dm_test_set_property_underscan_vborder(9),dm_test_set_property_underscan_enable(9),dm_test_set_property_abm_sysfs_control(9),dm_test_set_property_abm_level_off(9),dm_test_set_property_abm_level_value(9),dm_test_set_property_unknown(9)dm_test_get_property_scaling_center(9),dm_test_get_property_scaling_aspect(9),dm_test_get_property_scaling_full(9),dm_test_get_property_scaling_off(9),dm_test_get_property_underscan_borders(9),dm_test_get_property_abm_sysfs_allowed(9),dm_test_get_property_abm_level(9),dm_test_get_property_abm_disabled_zero(9),dm_test_get_property_unknown(9)dm_test_highest_refresh_writeback_null(9),dm_test_highest_refresh_cached_base(9),dm_test_highest_refresh_preferred_mode(9)dm_test_is_freesync_video_mode_null_mode(9),dm_test_is_freesync_video_mode_match(9),dm_test_is_freesync_video_mode_no_match(9)dm_test_cacp_caps_unsupported_ip(9),dm_test_cacp_caps_excluded_ip_316(9),dm_test_cacp_caps_edp_oled_supported(9),dm_test_cacp_caps_lvds_oled_supported(9),dm_test_cacp_caps_non_edp_signal(9),dm_test_cacp_caps_lcd_panel(9)dm_test_set_panel_type_vsdb_oled(9),dm_test_set_panel_type_vsdb_miniled(9),dm_test_set_panel_type_dpcd_oled(9),dm_test_set_panel_type_dpcd_miniled(9),dm_test_set_panel_type_did_oled(9),dm_test_set_panel_type_did_lcd(9),dm_test_set_panel_type_vendor_lum_heuristic(9),dm_test_set_panel_type_defaults_to_lcd(9)dm_test_update_subconnector_dp_with_sink(9),dm_test_update_subconnector_dp_no_sink(9),dm_test_update_subconnector_non_dp_noop(9)dm_test_fbc_init_no_compressor(9),dm_test_fbc_init_non_edp(9),dm_test_fbc_init_already_allocated(9),dm_test_fbc_init_no_modes(9)dm_test_detect_mst_no_connectors(9),dm_test_detect_mst_skips_writeback(9),dm_test_detect_mst_non_mst_link(9),dm_test_detect_mst_branch_without_aux(9)dm_test_find_first_crtc_match(9),dm_test_find_first_crtc_no_match(9),dm_test_find_first_crtc_empty_state(9),dm_test_find_first_crtc_skips_null_ptr(9),dm_test_find_first_crtc_returns_first(9)dm_test_set_panel_type_samsung_miniled(9),dm_test_set_panel_type_samsung_below_threshold(9),dm_test_set_panel_type_default_lcd(9)dm_test_cacp_caps_edp_supported(9),dm_test_cacp_caps_lvds_supported(9),dm_test_cacp_caps_old_ip_unsupported(9),dm_test_cacp_caps_ip_3_1_6_unsupported(9),dm_test_cacp_caps_non_edp_lvds_unsupported(9),dm_test_cacp_caps_lcd_unsupported(9)dm_test_fill_stream_borders_zeroed(9),dm_test_fill_stream_rgb_defaults(9),dm_test_fill_stream_sync_polarity_positive(9),dm_test_fill_stream_sync_polarity_negative(9),dm_test_fill_stream_inherits_old_stream(9),dm_test_fill_stream_timing_from_crtc(9),dm_test_fill_stream_color_depth_requested_bpc(9),dm_test_fill_stream_content_type(9),dm_test_fill_stream_aspect_ratio(9),dm_test_fill_stream_encoding_from_caller_ycbcr420(9),dm_test_fill_stream_encoding_from_caller_ycbcr422(9),dm_test_fill_stream_encoding_from_caller_ycbcr444(9),dm_test_fill_stream_hdmi_ep_clamps_depth(9),dm_test_fill_stream_non_hdmi_ep_keeps_depth(9)dm_test_create_stream_fake_sink_success(9),dm_test_create_stream_sets_dm_context(9),dm_test_create_stream_virtual_signal(9),dm_test_create_stream_scaling_src(9),dm_test_create_stream_existing_sink(9)dm_test_detect_force_on(9),dm_test_detect_force_on_digital(9),dm_test_detect_force_off(9),dm_test_detect_sink_present(9),dm_test_detect_no_sink(9),dm_test_poll_dac_load_returns_cached(9)dm_test_late_register_non_dp_succeeds(9),dm_test_unregister_non_dp_noop(9)dm_test_destroy_minimal(9),dm_test_destroy_releases_dc_sink(9),dm_test_destroy_releases_dc_em_sink(9),dm_test_encoder_disable_noop(9)dm_test_atomic_check_edp_native_keeps_scaling(9),dm_test_atomic_check_lvds_non_native_enables_scaling(9),dm_test_atomic_check_non_mst_returns_zero(9)dm_test_hdmi_cec_unset_edid_no_notifier(9),dm_test_create_eml_sink_no_edid(9),dm_test_handle_edid_mgmt_dp_sets_link_caps(9),dm_test_handle_edid_mgmt_non_dp_leaves_caps(9),dm_test_funcs_force_no_edid(9)dm_test_validate_stream_null_stream(9),dm_test_to_encoder_no_encoder(9),dm_test_to_encoder_returns_attached(9)dm_test_native_mode_no_encoder(9),dm_test_native_mode_empty_probed_zeroes_clock(9),dm_test_native_mode_copies_preferred(9)dm_test_create_common_mode_overrides(9),dm_test_add_common_modes_non_edp_noop(9),dm_test_add_common_modes_edp_adds(9),dm_test_ddc_get_modes_null_edid(9),dm_test_add_fs_modes_no_preferred_mode(9),dm_test_add_freesync_modes_null_edid_noop(9)dm_test_i2c_func_returns_flags(9),dm_test_i2c_xfer_no_ddc_pin(9)dm_test_get_amd_vsdb_unsupported(9),dm_test_get_amd_vsdb_supported(9),dm_test_parse_hdmi_amd_vsdb_no_extensions(9),dm_test_parse_hdmi_amd_vsdb_no_cea_ext(9)dm_test_parse_displayid_vrr_null_edid(9),dm_test_parse_displayid_vrr_no_displayid(9),dm_test_parse_displayid_vrr_sets_range(9)dm_test_mode_valid_interlace_rejected(9),dm_test_mode_valid_dblscan_rejected(9)dm_test_hdmi_cec_set_edid_no_notifier(9),dm_test_s3_handle_hdmi_cec_suspend(9),dm_test_s3_handle_hdmi_cec_resume(9)dm_test_create_validate_stream_null_dm_state(9)dm_test_update_after_detect_mst_noop(9),dm_test_update_after_detect_sink_unchanged(9)dm_test_update_scaling_null_mode(9),dm_test_update_scaling_fullscreen_default(9),dm_test_update_scaling_rmx_full(9),dm_test_update_scaling_rmx_aspect_pillarbox(9),dm_test_update_scaling_rmx_aspect_letterbox(9),dm_test_update_scaling_rmx_center(9),dm_test_update_scaling_underscan(9)
likeβ¦ that's the whole squad. every one of them, exactly as listed. iykwyk. ππ₯
π psa bestie: this page is just a NAME, a SYNOPSIS, an ARGUMENTS and a SEE ALSO β that's genuinely everything the original gives us, so don't go looking for a DESCRIPTION section, she's not here, she never was.
and that's the page! π¦ huge shoutout to the source location ./drivers/gpu/drm/amd/display/... and the date October 2026 β that's where this little icon of a manpage comes from and when it was stamped. mwah, go run some tests, ily, bye! πππ
π¦ where this page comes from
- nixpkgs unstable: linux-manual 7.3.1
- π girlified by deepseek-ai/DeepSeek-V4.1-Flash-1017 on : a language model's rewrite of the original, under its terms