dm_test_wri...sable_active(9)

💅 NAME 💅

okay so this is dm_test_wri...sable_active(9) from the Kernel API Manual — and bestie, the full name is dm_test_write_dsc_enable_synaptics_disable_active, it's just that the page title had to get chopped for space lol 😭. What does it do? It tests that active disable skips DPCD. That's the whole vibe. A KUnit test doing its little thing. 🦋

---

✨ SYNOPSIS ✨

void dm_test_write_dsc_enable_synaptics_disable_active (struct kunit
*test );

literally one function, one arg, no return value. she's lowkey simple like that. 💅

---

🫶 ARGUMENTS 🫶

• test — The KUnit test context. that's it, that's the whole parameter. it's giving "just hand me the test framework state and let me cook" 🔥

---

👀 SEE ALSO 👀

okay this list is long but every single one is here, no cap, not skipping a single crumb 🍓. First, the kernel file she lives in:

• Kernel file: ./drivers/gpu/drm/amd/display/amdgpu_dm/tests/amdgpu_dm_helpers_test.c

and then all her siblings and cousins (they're all (9) manpages, we stan a consistent family):

• dm_test_edid_extract_panel_id_basic(9), dm_test_edid_extract_panel_id_zeros(9)
• dm_test_apply_edid_quirks_dpcd_poweroff_delay(9), dm_test_apply_edid_quirks_disable_fams(9), dm_test_apply_edid_quirks_remove_sink_ext_caps(9), dm_test_apply_edid_quirks_disable_colorimetry(9), dm_test_apply_edid_quirks_skip_phy_ssc(9), dm_test_apply_edid_quirks_unknown_noop(9)
• dm_test_parse_edid_caps_null_edid(9), dm_test_parse_edid_caps_null_caps(9), dm_test_parse_edid_caps_valid(9), dm_test_parse_edid_caps_bad_checksum(9), dm_test_parse_edid_caps_hdmi_frl(9), dm_test_parse_edid_caps_hdmi_frl_dsc(9), dm_test_parse_edid_caps_cea_audio(9), dm_test_parse_edid_caps_cea_no_speaker(9)
• dm_test_probe_acpi_edid_no_companion(9), dm_test_read_acpi_edid_debug_mask_disabled(9), dm_test_read_acpi_edid_non_panel_connector(9), dm_test_read_acpi_edid_force_off(9)
• dm_test_read_vbios_edid_non_embedded(9), dm_test_read_vbios_edid_missing_callback(9), dm_test_read_vbios_edid_callback_error(9), dm_test_read_vbios_edid_missing_fake_edid(9), dm_test_read_vbios_edid_invalid_fake_edid(9), dm_test_read_vbios_edid_valid(9)
• dm_test_freesync_pcon_whitelist_all_known(9), dm_test_freesync_pcon_whitelist_not_in_list(9), dm_test_freesync_pcon_whitelist_zero(9)
• dm_test_populate_hdmi_scdc_present_true(9), dm_test_populate_hdmi_scdc_present_false(9), dm_test_populate_hdmi_frl_dsc_10bpc(9), dm_test_populate_hdmi_frl_dsc_12bpc(9), dm_test_populate_hdmi_frl_dsc_unknown_values(9)
• dm_test_adaptive_sync_type_none_default(9), dm_test_adaptive_sync_type_converter_no_conditions(9), dm_test_adaptive_sync_type_converter_partial_conditions(9), dm_test_adaptive_sync_type_pcon_whitelist(9), dm_test_adaptive_sync_type_converter_nonwhitelist(9)
• dm_test_helpers_is_fullscreen_returns_false(9), dm_test_helpers_is_hdr_on_returns_false(9)
• dm_test_get_max_frl_rate_3lanes_3gbps(9), dm_test_get_max_frl_rate_3lanes_6gbps(9), dm_test_get_max_frl_rate_4lanes_6gbps(9), dm_test_get_max_frl_rate_4lanes_8gbps(9), dm_test_get_max_frl_rate_4lanes_10gbps(9), dm_test_get_max_frl_rate_4lanes_12gbps(9), dm_test_get_max_frl_rate_unknown(9)
• dm_test_dtn_log_buffer_accumulates(9), dm_test_dtn_log_null_ctx_no_crash(9)
• dm_test_dp_read_dpcd_null_priv(9), dm_test_dp_write_dpcd_null_priv(9), dm_test_dp_read_dpcd_success(9), dm_test_dp_write_dpcd_success(9)
• dm_test_execute_fused_io_null_dmub_srv(9)
• dm_test_execute_synaptics_rc_command_write_success(9), dm_test_execute_synaptics_rc_command_read_success(9), dm_test_execute_synaptics_rc_command_write_fail(9)
• dm_test_apply_synaptics_fifo_reset_wa_full(9), dm_test_apply_synaptics_fifo_reset_wa_first_fail(9)
• dm_test_write_dsc_enable_synaptics_enable_inactive(9), dm_test_write_dsc_enable_synaptics_enable_active(9), dm_test_write_dsc_enable_synaptics_disable_inactive(9), dm_test_write_dsc_enable_synaptics_enable_non_synaptics(9) ← (these are literally her besties, same friend group 💖)
• dm_test_dp_write_dsc_enable_routes_synaptics(9)
• dm_test_mst_start_top_mgr_null_priv(9), dm_test_mst_stop_top_mgr_null_priv(9), dm_test_mst_start_top_mgr_boot(9)
• dm_test_dp_write_hblank_reduction_false(9)
• dm_test_get_dsc_max_slices_1_340(9), dm_test_get_dsc_max_slices_2_340(9), dm_test_get_dsc_max_slices_4_340(9), dm_test_get_dsc_max_slices_8_340(9), dm_test_get_dsc_max_slices_8_400(9), dm_test_get_dsc_max_slices_12_400(9), dm_test_get_dsc_max_slices_16_400(9), dm_test_get_dsc_max_slices_unknown(9)
• dm_test_init_panel_settings_pps(9), dm_test_init_panel_settings_dsc(9)
• dm_test_override_panel_settings_debug_mask_disables_dsc(9), dm_test_override_panel_settings_second_edp_disables_psr(9)
• dm_test_fill_mst_payload_table_enable(9), dm_test_fill_mst_payload_table_disable(9), dm_test_fill_mst_payload_table_empty(9)
• dm_test_submit_i2c_null_priv(9), dm_test_submit_i2c_success(9), dm_test_submit_i2c_partial_transfer(9)
• dm_test_dmub_aux_transfer_sync_hpd_discon(9)
• dm_test_dp_update_branch_info_no_crash(9), dm_test_mst_poll_pending_down_reply_no_crash(9), dm_test_mst_clear_payload_alloc_table_no_crash(9), dm_test_set_dcn_clocks_no_crash(9), dm_test_dmu_timeout_no_crash(9), dm_test_smu_timeout_no_crash(9), dm_test_set_phyd32clk_no_crash(9), dm_test_mst_update_branch_bandwidth_no_crash(9)
• dm_test_mst_write_payload_alloc_table_null_ctx(9), dm_test_mst_poll_for_act_null_ctx(9), dm_test_mst_send_payload_alloc_null_ctx(9), dm_test_mst_update_mgr_dealloc_null_ctx(9)
• dm_test_is_dp_sink_present_null_priv(9), dm_test_dmub_outbox_interrupt_control_null_dc(9)
• dm_test_mst_enable_stream_features_aux_disabled(9), dm_test_mst_enable_stream_features_writes_downspread(9)
• dm_test_enable_periodic_detection_no_workqueue(9), dm_test_enable_periodic_detection_updates_enable(9), dm_test_enable_periodic_detection_schedules_work(9)
• dm_test_read_mccs_caps_null_ctx(9), dm_test_read_mccs_caps_null_link(9), dm_test_read_mccs_caps_no_vcp_code(9), dm_test_read_mccs_caps_i2c_vcp_request(9), dm_test_read_mccs_caps_hdmi_vcp_request(9), dm_test_read_mccs_caps_legacy_pcon_vcp_request(9), dm_test_read_mccs_caps_i2c_failure(9)
• dm_test_mccs_vcp_set_null_ctx(9), dm_test_mccs_vcp_set_not_supported(9), dm_test_mccs_vcp_set_null_link(9), dm_test_mccs_vcp_set_i2c_packet(9), dm_test_mccs_vcp_set_i2c_failure(9)
• dm_test_construct_old_payload_empty_list(9), dm_test_construct_old_payload_intervening(9)
• dm_test_write_payload_alloc_table_success(9), dm_test_write_payload_alloc_table_enable(9), dm_test_write_payload_alloc_table_disable(9)
• dm_test_mst_start_top_mgr_set_mst_fail(9), dm_test_mst_stop_top_mgr_active(9)
• dm_test_poll_for_act_no_mst_state(9), dm_test_poll_for_act_success(9), dm_test_poll_for_act_status_failed(9)
• dm_test_mst_send_payload_alloc_part2_fail(9), dm_test_mst_update_mgr_dealloc_success(9)
• dm_test_dp_write_dsc_enable_mst_no_aux(9), dm_test_dp_write_dsc_enable_non_dp(9), dm_test_dp_write_dsc_enable_mst_enable_decode_only(9), dm_test_dp_write_dsc_enable_mst_enable_passthrough(9), dm_test_dp_write_dsc_enable_mst_disable_decode_only(9), dm_test_dp_write_dsc_enable_mst_disable_passthrough(9), dm_test_dp_write_dsc_enable_sst_rx_enable(9), dm_test_dp_write_dsc_enable_sst_rx_disable(9), dm_test_dp_write_dsc_enable_pcon_enable(9), dm_test_dp_write_dsc_enable_pcon_disable(9)
• dm_test_dp_handle_test_pattern_no_pipe(9)

like… she has a huge extended network and honestly? iconic behavior. 💅✨

---

🎀 the cute little sign-off 🎀

source/version vibes: ./drivers/gpu/drm/amd/display/... — dated October 2026, filed under the Kernel API Manual</> page dm_test_wri...sable_active(9). that's the whole page bestie, go forth and test your DPCD-skipping with confidence 🫶🌸💜