dc_process_...et_mst_slots(9)

💅 dc_process_dmub_set_mst_slots — Kernel API Manual ✨

okay bestie, buckle up, we're diving into the Kernel API Manual and honestly? this one's a little niche but she's iconic in her own way 🎀

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🌸 NAME 🌸

dc_process_dmub_set_mst_slots — submits MST solt allocation

yes, it says solt, not slot 💀 that's literally what the page says and i refuse to gaslight the documentation. we move.

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✨ SYNOPSIS ✨

enum dc_status dc_process_dmub_set_mst_slots (const struct dc *dc ,
uint32_t link_index , uint8_t mst_alloc_slots , uint8_t
*mst_slots_in_use );

like, she takes four things and returns an enum dc_status, no biggie 🫶

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🦋 ARGUMENTS 🦋

• dc [in] — the dc structure, it's giving "main character energy" because she's the whole display core ok
• link_index [in] — the link index, aka which link we're talking about 🔗
• mst_alloc_slots [in] — the mst slots to be allotted, this is the actual number you're handing over
• mst_slots_in_use [out] — the mst slots in use, and heads up: this one gets returned in the failure case 😭 so it's your consolation prize when things go sideways

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💖 DESCRIPTION 💖

so basically: submits mst slot allocation command to dmub via inbox message 📬

that's it. that's the whole tea. she goes in through the inbox, no cap. the way that this function just quietly tells dmub what slots are being used?? lowkey iconic 👑

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🔥 RETURN 🔥

• DC_OK — if successful ✨ slay
• DC_ERROR — if failure 💀 not slay

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🌈 SEE ALSO 🌈

okay this list is LONG, grab a snack bestie, we're going through all of them fr fr:

• Kernel file ./drivers/gpu/drm/amd/display/dc/core/dc.c Overview(9)
• dc_stream_get_last_used_drr_vtotal(9)
• dc_stream_configure_crc(9)
• dc_stream_get_crc(9)
• dc_stream_adjust_vmin_vmax(9)
• dc_commit_state_no_check(9)
• dc_commit_streams(9)
• dc_check_state_update(9)
• dc_check_update_surfaces_for_stream(9)
• update_seamless_boot_flags(9)
• update_planes_and_stream_state(9)
• dc_check_address_only_update(9)
• build_dmub_cmd_list(9)
• could_mpcc_tree_change_for_active_pipes(9)
• commit_minimal_transition_state_in_dc_update(9)
• commit_minimal_transition_state(9)
• dc_update_state(9)
• dc_update_planes_and_stream(9)
• dc_enable_dcmode_clk_limit(9)
• dc_is_dmub_outbox_supported(9)
• dc_enable_dmub_notifications(9)
• dc_enable_dmub_outbox(9)
• dc_process_dmub_aux_transfer_async(9)
• dc_process_dmub_set_config_async(9)
• dc_process_dmub_dpia_set_tps_notification(9)
• dc_process_dmub_dpia_hpd_int_enable(9)
• dc_print_dmub_diagnostic_data(9)
• dc_disable_accelerated_mode(9)
• dc_notify_vsync_int_state(9)
• dc_set_edp_power(9)
• dc_get_power_profile_for_dc_state(9)
• dc_get_det_buffer_size_from_state(9)
• dc_get_host_router_index(9)
• should_commit_intermediate_context(9)
• dc_update_probes_prepare(9)
• dc_update_probes_execute(9)

like i said. LONG. but we read every single one because that's the vibe check and we passed 🧚

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alright bestie, that's the whole page!! mwah 💋 this came from ./drivers/gpu/drm/amd/display/... and it's dated October 2026, and it's filed under dc_process_...et_mst_slots(9) — go forth and allocate those solts (slots) responsibly 🍓💜