dc_set_edp_power(9)

💅 dc_set_edp_power — kernel API manual, but make it make sense

okay bestie, so this is a section 9 (kernel API) page for dc_set_edp_power, and it's honestly so much shorter than the SEE ALSO list, which is lowkey sending me 😭 like the actual function is three arguments and a vibe, and then you get to the end and there's a whole ✨city✨ of cross-references.

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✨ NAME ✨

dc_set_edp_power — the DM side of the story controls eDP power, ON or OFF, no in-between 🎀

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✨ SYNOPSIS ✨

void dc_set_edp_power (const struct dc *dc , struct dc_link *edp_link ,
bool powerOn );

like yeah that's the whole signature, isn't it iconic 🫶

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✨ ARGUMENTS ✨

• dc — the current DC state, aka the main character of the whole display-core situation 👑
• edp_link — a link whose connector signal type is eDP, so like, the actual panel we're talking about 🦋
• powerOn — bool, and it does exactly what it says on the tin: power on / power off eDP ⚡

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✨ DESCRIPTION ✨

So when the DM (that's the display manager, bestie, keep up 💅) wants to power the eDP panel on or off, this is the function it calls. That's the whole job.

⚠️ but here's the catch, and it's a real one: it only works on links where the flag skip_implict_edp_power_control is set. (and yes, that's spelled implict in the original, not me being chaotic — copy it exactly, ok?) no flag, no power control, fr fr.

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✨ RETURN ✨

void — she returns nothing. no exit status, no error code, no little treat for you. just vibes and a side effect 🍓

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✨ SEE ALSO ✨

okay so this is the part where the manpage goes feral. grab a snack, we're going through the whole friend group 🌈

• 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_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_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. thirty-six of them. not me counting 💀 but they're all there, every single one, no cap.

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and that's the whole page, bestie!! 🧚 she lives over in ./drivers/gpu/drm/amd/display/... (the path gets cut off in the footer, tragic, I know 😭), dated October 2026, and it's dc_set_edp_power(9) all the way down. go forth and power your eDP panel responsibly 💜✨