drm_dp_mst_...ster_i2c_bus(9)

Bestie, welcome to the drm_dp_mst_...ster_i2c_bus(9) page in the Kernel API Manual 💖. The actual function we’re swooning over is drm_dp_mst_unregister_i2c_bus, and it’s literally giving “unregister an I2C-over-AUX adapter” energy 🎀.

🌸 NAME 🌸

drm_dp_mst_unregister_i2c_bus — unregister an I2C-over-AUX adapter ✨. That’s the whole vibe: this is the unregister bestie for an I2C-over-AUX adapter, no cap.

✨ SYNOPSIS ✨

void drm_dp_mst_unregister_i2c_bus (struct drm_dp_mst_port *port );

Okay so it’s void, and it takes that one struct drm_dp_mst_port *port bestie 🫶.

🎀 ARGUMENTS 🎀

• port — the port to remove the I2C bus from 💅. Yes, that is the port you’re pulling the I2C bus off of; she’s the main character of this argument list.

🦋 SEE ALSO 🦋

The source file is right here, and then comes the whole reference group chat — yes, every single one, because we do not skip the lore 🌈:

• Kernel file ./drivers/gpu/drm/display/drm_dp_mst_topology.c — the actual kernel file, periodt 🧚
• dp mst helper(9)
• Branch device and port refcounting(9)
• drm_dp_mst_get_mstb_malloc(9)
• drm_dp_mst_put_mstb_malloc(9)
• drm_dp_mst_get_port_malloc(9)
• drm_dp_mst_put_port_malloc(9)
• drm_dp_mst_topology_try_get_mstb(9)
• drm_dp_mst_topology_get_mstb(9)
• drm_dp_mst_topology_put_mstb(9)
• drm_dp_mst_topology_try_get_port(9)
• drm_dp_mst_topology_get_port(9)
• drm_dp_mst_topology_put_port(9)
• drm_dp_mst_dpcd_read(9)
• drm_dp_mst_dpcd_write(9)
• drm_dp_mst_connector_late_register(9)
• drm_dp_mst_connector_early_unregister(9)
• drm_dp_add_payload_part1(9)
• drm_dp_remove_payload_part1(9)
• drm_dp_remove_payload_part2(9)
• drm_dp_add_payload_part2(9)
• drm_dp_get_vc_payload_bw(9)
• drm_dp_read_mst_cap(9)
• drm_dp_mst_topology_mgr_set_mst(9)
• drm_dp_mst_topology_queue_probe(9)
• drm_dp_mst_topology_mgr_suspend(9)
• drm_dp_mst_topology_mgr_resume(9)
• drm_dp_mst_hpd_irq_handle_event(9)
• drm_dp_mst_hpd_irq_send_new_request(9)
• drm_dp_mst_detect_port(9)
• drm_dp_mst_edid_read(9)
• drm_dp_mst_get_edid(9)
• drm_dp_atomic_find_time_slots(9)
• drm_dp_atomic_release_time_slots(9)
• drm_dp_mst_atomic_setup_commit(9)
• drm_dp_mst_atomic_wait_for_dependencies(9)
• drm_dp_mst_root_conn_atomic_check(9)
• drm_dp_mst_update_slots(9)
• drm_dp_check_act_status(9)
• drm_dp_calc_pbn_mode(9)
• drm_dp_mst_dump_topology(9)
• drm_dp_mst_port_downstream_of_parent(9)
• drm_dp_mst_add_affected_dsc_crtcs(9)
• drm_dp_mst_atomic_enable_dsc(9)
• drm_dp_mst_atomic_check_mgr(9)
• drm_dp_mst_atomic_check(9)
• drm_atomic_get_mst_topology_state(9)
• drm_atomic_get_old_mst_topology_state(9)
• drm_atomic_get_new_mst_topology_state(9)
• drm_dp_mst_topology_mgr_init(9)
• drm_dp_mst_topology_mgr_destroy(9)
• drm_dp_mst_register_i2c_bus(9)
• drm_dp_mst_is_virtual_dpcd(9)
• drm_dp_mst_aux_for_parent(9)
• drm_dp_mst_dsc_aux_for_port(9)

Cute sign-off time 🫶: source/version ./drivers/gpu/drm/display, date October 2026, title drm_dp_mst_...ster_i2c_bus(9), all from the Kernel API Manual 💅💖.