dcn32_can_s...lank_stretch(9)

💅 NAME 💅

dcn32_can_support_mclk_switch_using_fw_based_vblank_stretch — bestie, this one literally just tells you if a config can support FPO ✨

(it's a kernel API manual thing, from the Kernel API Manual, and yes the name is a mouthful, iykyk 🫶)

---

🌸 SYNOPSIS 🌸

struct dc_stream_state *
dcn32_can_support_mclk_switch_using_fw_based_vblank_stretch (struct dc
*dc , struct dc_state *context );

so you call it with your two dc structs and it hands you back a struct dc_stream_state * — main character energy fr 💫

---

🎀 ARGUMENTS 🎀

• dc — the current dc state, like the outfit you're already wearing 👑
• context — the new dc state, the fit you're thinking about trying on 🦋

---

⭐ RETURN ⭐

Pointer to the FPO stream candidate if the config can support FPO — slay, it ate 💅

Otherwise NULL 😭 (no candidate, no vibes, nothing)

---

🌈 SEE ALSO 🌈

Kernel file, right here bestie:

./drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource_helpers.c

and the whole friend group 💜:

• dcn32_helper_calculate_num_ways_for_subvp(9)
• dcn32_determine_det_override(9)
• disallow_subvp_in_active_plus_blank(9)
• dcn32_subvp_drr_admissable(9)
• dcn32_subvp_vblank_admissable(9)

---

okay that's the whole page, go touch some dc state 🧚💖

source: ./drivers/gpu/drm/amd/display/... — dated October 2026 🍓 periodt.