drm_dp_mst_..._mgr_set_mst(9)

💅 drm_dp_mst_topology_mgr_set_mst(9) ✨

hey bestie, welcome to the Kernel API Manual page for drm_dp_mst_topology_mgr_set_mst(9) — the function that sets the MST state for a topology manager. no cap, it’s giving “plug/unplug moment just happened” energy. 🎀

✨ NAME ✨

drm_dp_mst_topology_mgr_set_mst — set the MST state for a topology manager. periodt. 💖

🌸 SYNOPSIS 🌸

int drm_dp_mst_topology_mgr_set_mst (struct drm_dp_mst_topology_mgr *mgr
, bool mst_state );

🦋 ARGUMENTS 🦋

• mgr — the manager to set state for. that’s the main character here. 👑
• mst_state — true to enable MST on this connector, false to disable. literally the on/off switch vibe. 🔥

🌈 DESCRIPTION 🌈

okay so your driver calls this when it detects an MST capable device plugged into a DP MST capable port, or when a DP MST capable device is unplugged. that’s the tea. 🫖 the topology manager is the one getting its state set, and this is the plug/unplug signal moment. iykyk. 🦋

👀 SEE ALSO 👀

the lore continues here — every ref, no skips, bestie:

• Kernel file: ./drivers/gpu/drm/display/drm_dp_mst_topology.c
• 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_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_unregister_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>cute lil footer sign-off:</cute> this page lives under the source/version spot ./drivers/gpu/drm/display, dated October 2026, and its page label is drm_dp_mst_..._mgr_set_mst(9). mwah 💋✨🫶