dm_test_reg...ndlers_valid(9)
π dm_test_register_hpd_handlers_valid(9) β the Kernel API Manual glow-up π
okay so bestie, we're in the Kernel API Manual today, section 9, and the star of the show is dm_test_register_hpd_handlers_valid(9). it's not a command you run, it's a kernel doc page, so grab a lil snack and let's get into it π
β¨ NAME β¨
dm_test_register_hpd_handlers_valid β literally just here to test that HPD/HPDRX registration succeeds. that's it. that's the whole vibe. it checks the thing registers, and it better succeed, no cap πΈ
π SYNOPSIS π
void dm_test_register_hpd_handlers_valid (struct kunit *test );
returns nothing (void), takes one thing, and it's giving very "small function, big responsibility" energy π
π¦ ARGUMENTS π¦
testβ the KUnit test context. yes bestie, that's the whole argument list. one (1) parameter. iconic minimalism β¨
so when you see test floating around in here, just know it's the KUnit test context holding the whole situation together π«Ά
π SEE ALSO π
okay so the kernel file you wanna peek at is right here:
./drivers/gpu/drm/amd/display/amdgpu_dm/tests/amdgpu_dm_irq_test.c
and here is the entire friend group β every single sibling test, no one left behind, fr fr π
dm_test_hpd_to_dal_irq_source_hpd1(9)dm_test_hpd_to_dal_irq_source_hpd2(9)dm_test_hpd_to_dal_irq_source_hpd3(9)dm_test_hpd_to_dal_irq_source_hpd4(9)dm_test_hpd_to_dal_irq_source_hpd5(9)dm_test_hpd_to_dal_irq_source_hpd6(9)dm_test_hpd_to_dal_irq_source_invalid(9)dm_test_hpd_to_dal_irq_source_out_of_range(9)dm_test_are_sinks_equal_both_null(9)dm_test_are_sinks_equal_first_null(9)dm_test_are_sinks_equal_second_null(9)dm_test_are_sinks_equal_different_signal(9)dm_test_are_sinks_equal_different_edid_length(9)dm_test_are_sinks_equal_different_edid_data(9)dm_test_are_sinks_equal_identical(9)dm_test_are_sinks_equal_zero_length(9)dm_test_are_sinks_equal_full_edid_identical(9)dm_test_are_sinks_equal_full_edid_last_byte_differs(9)dm_test_notification_str_no_data(9)dm_test_notification_str_aux_reply(9)dm_test_notification_str_hpd(9)dm_test_notification_str_hpd_irq(9)dm_test_notification_str_set_config(9)dm_test_notification_str_dpia(9)dm_test_notification_str_hpd_sense(9)dm_test_notification_str_fused_io(9)dm_test_notification_str_unknown(9)dm_test_irq_init_initializes_lists(9)dm_test_irq_register_rejects_null_params(9)dm_test_irq_register_rejects_invalid_context(9)dm_test_irq_register_rejects_invalid_source(9)dm_test_irq_register_adds_low_context_handler(9)dm_test_irq_register_adds_high_context_handler(9)dm_test_irq_register_multiple_handlers(9)dm_test_irq_register_separate_contexts(9)dm_test_irq_unregister_rejects_invalid_source(9)dm_test_irq_unregister_rejects_null_handler(9)dm_test_irq_unregister_handler_not_found(9)dm_test_irq_fini_removes_registered_handlers(9)dm_test_irq_fini_on_empty_tables(9)dm_test_get_crtc_by_otg_inst_returns_match(9)dm_test_get_crtc_by_otg_inst_returns_null(9)dm_test_get_crtc_by_otg_inst_empty_list(9)dm_test_set_irq_funcs(9)dm_test_irq_suspend_empty(9)dm_test_irq_resume_early_empty(9)dm_test_irq_resume_late_empty(9)dm_test_irq_suspend_registered(9)dm_test_irq_suspend_disables_polling(9)dm_test_irq_resume_early_registered(9)dm_test_irq_resume_late_registered(9)dm_test_irq_resume_late_enables_polling(9)dm_test_hpd_rx_irq_create_workqueue(9)dm_test_hpd_rx_irq_work_suspend_null(9)dm_test_hpd_rx_irq_work_suspend_flushes(9)dm_test_set_crtc_irq_state_no_crtc(9)dm_test_set_pflip_irq_state_no_crtc(9)dm_test_set_vline0_irq_state_no_crtc(9)dm_test_set_vupdate_irq_state_no_crtc(9)dm_test_set_crtc_irq_state_otg_disabled(9)dm_test_set_crtc_irq_state_enable(9)dm_test_set_pflip_irq_state_disable(9)dm_test_set_vline0_irq_state_enable(9)dm_test_set_vupdate_irq_state_enable(9)dm_test_set_crtc_irq_state_allows_idle(9)dm_test_irq_immediate_work_empty(9)dm_test_irq_immediate_work_invokes_handler(9)dm_test_irq_immediate_work_invokes_all(9)dm_test_irq_schedule_work_empty(9)dm_test_irq_schedule_work_queues_handler(9)dm_test_irq_schedule_work_requeue_fallback(9)dm_test_set_hpd_irq_state_null_dc(9)dm_test_set_dmub_outbox_irq_state_null_dc(9)dm_test_set_dmub_trace_irq_state_null_dc(9)dm_test_outbox_init_null_dc(9)dm_test_hpd_init_empty_connectors(9)dm_test_hpd_fini_empty_connectors(9)dm_test_hpd_init_fini_with_connectors(9)dm_test_hpd_init_fini_analog_connector(9)dm_test_hpd_init_fini_irq_ref(9)dm_test_hpd_rx_offload_work_no_connector(9)dm_test_hpd_rx_offload_work_no_connection(9)dm_test_hpd_rx_offload_work_automated_test(9)dm_test_hpd_rx_offload_work_link_loss(9)dm_test_hdmi_hpd_debounce_detect_false(9)dm_test_hdmi_hpd_debounce_reallow_idle(9)dm_test_handle_hpd_irq_disabled(9)dm_test_handle_hpd_irq_helper_debounce_schedule(9)dm_test_handle_hpd_irq_helper_debounce_release_prev(9)dm_test_handle_hpd_irq_helper_detect_false(9)dm_test_handle_hpd_rx_irq_disabled(9)dm_test_schedule_hpd_rx_offload_work(9)dm_test_handle_hpd_rx_irq_no_left_work(9)dm_test_handle_hpd_rx_irq_automated_test(9)dm_test_handle_hpd_rx_irq_msg_rdy(9)dm_test_handle_hpd_rx_irq_link_loss(9)dm_test_dmub_hpd_callback_null_inputs(9)dm_test_dmub_hpd_callback_invalid_index(9)dm_test_dmub_hpd_callback_empty_connectors(9)dm_test_dmub_hpd_callback_unknown_type_match(9)dm_test_dmub_hpd_callback_hpd_type(9)dm_test_dmub_hpd_callback_hpd_irq_type(9)dm_test_register_hpd_handlers_empty(9)dm_test_register_hpd_handlers_invalid_hpd(9)dm_test_register_hpd_handlers_invalid_hpd_rx(9)dm_test_register_hpd_handlers_dmub_outbox(9)dm_test_pflip_high_irq_no_crtc(9)dm_test_pflip_high_irq_not_submitted(9)dm_test_vupdate_high_irq_no_crtc(9)dm_test_crtc_high_irq_no_crtc(9)dm_test_crtc_high_irq_vrr_pre_ai(9)dm_test_crtc_high_irq_vrr_ai_no_stream(9)dm_test_handle_hpd_work_out_of_range(9)dm_test_dmub_outbox1_low_irq_empty(9)dm_test_dmub_outbox1_low_irq_no_handler(9)dm_test_dmub_outbox1_low_irq_direct_callback(9)dm_test_dmub_outbox1_low_irq_offload(9)dm_test_dce110_register_irq_handlers_rejects_uninitialized_sources(9)dm_test_dce110_register_irq_handlers_one_crtc(9)dm_test_dcn10_register_irq_handlers_zero_crtc(9)dm_test_dcn10_register_irq_handlers_one_crtc(9)dm_test_register_outbox_irq_handlers_without_dmub(9)dm_test_register_outbox_irq_handlers_with_dmub(9)dm_test_irq_handler_dispatches_work(9)dm_test_handle_vmin_vmax_update(9)
likeβ¦ that's the whole cast π every single one of them showed up to the group chat and honestly? obsessed π
and that's the page, bestie π this lil write-up comes to you from ./drivers/gpu/drm/amd/display/..., dated October 2026, and it's filed under dm_test_reg...ndlers_valid(9) β mwah, go read the source, it slays πβ¨
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