dc_check_up...s_for_stream(9)

💅 dc_check_update_surfaces_for_stream(9) — Kernel API Manual ✨

okay bestie so this is a page out of the Kernel API Manual and it's lowkey iconic 🎀 it's all about dc_check_update_surfaces_for_stream — a lil shim function that's giving "middle management" energy in the best way possible (iykyk) 🦋

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🌸 NAME 🌸

dc_check_update_surfaces_for_stream — the shim for dc_check_state_update, periodt 💅

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⭐ SYNOPSIS ⭐

struct dc_update_descriptor dc_check_update_surfaces_for_stream (const
struct dc_check_config *check_config , struct dc_surface_update *updates
, int surface_count , struct dc_stream_update *stream_update );

no cap, that's the whole signature — every arg, every pointer, exactly as written 🫶

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🧚 ARGUMENTS 🧚

okay so let's meet the cast of characters 💖

• check_config — ASIC capabilities and display configuration context. it's literally the vibe check for your hardware 😌
• updates — an array of surface update descriptors. yes, array, bestie 🍓
• surface_count — how many entries are actually chillin' in updates. don't lie about this one 🙈
• stream_update — optional stream update. optional!! she can ghost if she wants ✨

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💀 DESCRIPTION 💀

so what does she actually do? she packs all those individual arguments into a dc_state_update and forwards everything to dc_check_state_update. main character energy, but make it delegation 👑

and why does this exist? because it's preserved for out-of-tree and incremental callers — so if you're coding outside the tree, this one's got you fr fr 💜

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🔥 RETURN 🔥

you get back a dc_update_descriptor with update_type and lock_descriptor. that's it, that's the tea ☕ slay.

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🌈 SEE ALSO 🌈

okay this list is LONG and honestly kind of iconic — the whole friend group showed up 🎀 this is straight out of the kernel file ./drivers/gpu/drm/amd/display/dc/core/dc.c Overview(9), plus all these:

• 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)
• 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_set_mst_slots(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)

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tiny heads up bestie: those names are copied exactly character for character — don't go "fixing" the spelling of should_commit_intermediate_context or could_mpcc_tree_change_for_active_pipes, she's built different and we respect it 💅

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and that's the page!! 🦋 source is ./drivers/gpu/drm/amd/display/... and it's dated October 2026 — so yeah, future-coded of her honestly ⭐ mwah, go read the source, ily, bye 💖