dc_is_dmub_outbox_supported(9)

💅 dc_is_dmub_outbox_supported ✨

okay so bestie, welcome to the Kernel API Manual 🎀 — this one's a lil function called dc_is_dmub_outbox_supported, and honestly? it's giving "quick vibe check before the real party starts." let's get into it 💖

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🌸 NAME 🌸

dc_is_dmub_outbox_supported — literally just checks if DMUB firmware supports outbox notification 🦋 no cap, that's the whole job.

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✨ SYNOPSIS ✨

bool dc_is_dmub_outbox_supported (struct dc *dc );

like, you hand it a struct dc * and it hands you back a bool. simple. iconic. periodt. 👑

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🫶 ARGUMENTS 🫶

• dc — [in] the dc structure 💅 that's it, that's the whole argument list, she's low maintenance.

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💜 DESCRIPTION 💜

so what does it actually do? it checks whether the DMUB FW supports outbox notifications 🔍 — that's the vibe check.

and here's the part you actually need to remember, bestie: if it IS supported, DM should register the outbox interrupt prior to actually enabling interrupts via dc_enable_dmub_outbox ⚠️ like, order matters, do the registration first, don't skip ahead, iykyk.

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⭐ RETURN ⭐

• True if DMUB FW supports outbox notifications 🎉
• False otherwise 💀

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🌈 SEE ALSO 🌈

okay this list is long but we're not skipping a single one, because every reference is a main character 👑✨:

• 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_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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💡 friendly reminder bestie: this page lives at ./drivers/gpu/drm/amd/display/... — don't @ me, that's literally what it says 🙈

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and that's the whole page, queen 🧚💖 sign-off time: this lil beauty comes from ./drivers/gpu/drm/amd/display/..., dated October 2026, and it's all about dc_is_dmub_outbox_supported(9) 🍓 slay, go register that interrupt in the right order 💅✨