intel_dpll_release(9)

intel_dpll_release(9)

okay bestie, welcome to the Kernel API Manual entry for intel_dpll_release ✨ this is the one about ending the use of DPLLs by a CRTC in atomic state, and yes it’s giving very niche display-PLL energy 💅

✨ NAME ✨

intel_dpll_release — end use of DPLLs by CRTC in atomic state

🌸 SYNOPSIS 🌸

void intel_dpll_release (struct intel_atomic_state *state , struct
intel_crtc *crtc );

🎀 ARGUMENTS 🎀

• state — the atomic state. literally the atomic state we’re passing in, bestie.
• crtc — the crtc from which the DPLLs are to be released. that’s the one packing up its DPLLs and heading out 🫶

🦋 DESCRIPTION 🦋

so this function releases all the DPLLs that intel_dpll_reserve reserved, pulling them from the current atomic commit state and from the old crtc atomic state. no DPLL left behind, periodt ✨

and how does the new configuration in the atomic commit state actually become effective? by calling intel_dpll_swap_state 💫 that’s the glow-up moment.

🔥 SEE ALSO 🔥

• Kernel file ./drivers/gpu/drm/i915/display/intel_dpll_mgr.c
• Display PLLs(9)
• intel_get_dpll_by_id(9)
• intel_dpll_enable(9)
• intel_dpll_disable(9)
• intel_dpll_crtc_get(9)
• intel_dpll_crtc_put(9)
• intel_dpll_swap_state(9)
• icl_set_active_port_dpll(9)
• intel_dpll_init(9)
• intel_dpll_compute(9)
• intel_dpll_reserve(9)
• intel_dpll_update_active(9)
• intel_dpll_get_freq(9)
• intel_dpll_get_hw_state(9)
• intel_dpll_dump_hw_state(9)
• intel_dpll_compare_hw_state(9)

okay that’s the whole page, bestie 🫶 this intel_dpll_release(9) page from the Kernel API Manual lives in ./drivers/gpu/drm/i915/display, and its date is October 2026. mwah 💋