dcn32_find_vactive_pipe(9)

💅 dcn32_find_vactive_pipe(9) — like, the whole page

okay bestie, welcome to the Kernel API Manual entry for dcn32_find_vactive_pipe(9). yes it's a mouthful, yes it's from the AMD display driver, and yes we're gonna get through it together 🫶

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✨ NAME ✨

dcn32_find_vactive_pipe — literally determines if the config has a pipe that can switch in VACTIVE. that's it. that's the whole vibe check 👑

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🌸 SYNOPSIS 🌸

bool dcn32_find_vactive_pipe (struct dc *dc , const struct dc_state
*context , struct dc_stream_state *fpo_candidate_stream , uint32_t
vactive_margin_req_us );

she takes four parameters and returns a bool, no cap ✨

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🦋 ARGUMENTS 🦋

• dc — the current dc state. like, right now state 💖
• context — the new dc state. the glow-up state, the one we're considering 🌈
• fpo_candidate_stream — the candidate stream to be chosen for FPO. she's in the running, she's auditioning, main character energy ✨
• vactive_margin_req_us — the vactive marign (their spelling, not mine 😭) required for a vactive pipe to be considered "found". yes "found" is in quotes in the original, we respect the quotes 🎀

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👑 RETURN 👑

True if VACTIVE display is found, false otherwise. binary queen. either she ate or she didn't, no in-between 💅

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💀 SEE ALSO 💀

the kernel file lives at:

./drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c

and the whole friend group shows up too, fr fr:

• dcn32_helper_populate_phantom_dlg_params(9)
• dcn32_set_phantom_stream_timing(9)
• dcn32_get_num_free_pipes(9)
• dcn32_assign_subvp_pipe(9)
• dcn32_enough_pipes_for_subvp(9)
• subvp_subvp_schedulable(9)
• subvp_drr_schedulable(9)
• subvp_vblank_schedulable(9)
• subvp_subvp_admissable(9)
• subvp_validate_static_schedulability(9)
• dcn32_allow_subvp_high_refresh_rate(9)
• dcn32_determine_max_vratio_prefetch(9)
• dcn32_assign_fpo_vactive_candidate(9)

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okay that's the page!! source path is ./drivers/gpu/drm/amd/display/... and the date stamp says October 2026 (yes, the future, she's ahead of her time ⭐). mwah, go read the kernel source bestie, ily 🧚💜