intel_psr_invalidate(9)

💖 NAME 💖

okay so bestie, welcome to intel_psr_invalidate(9) from the Kernel API Manual 💅 this one is literally called Invalidate PSR — iconic name, no notes ✨

---

✨ SYNOPSIS ✨

void intel_psr_invalidate (struct intel_display *display , unsigned
frontbuffer_bits , enum fb_op_origin origin );

---

🎀 ARGUMENTS 🎀

• display — the display device, aka the screen situation we’re working with 🖥️✨
• frontbuffer_bits — frontbuffer plane tracking bits, the lil’ bitmask bestie 🎀
• origin — which operation caused the invalidate, iykyk 💅

---

🦋 DESCRIPTION 🦋

okay so here’s the vibe: the hardware frontbuffer tracking has gaps, so we need to integrate it with the software frontbuffer tracking. that’s the whole reason this function exists, fr fr 🫶

This function gets called every time frontbuffer rendering starts and a buffer gets dirtied. every. single. time. 💀

PSR must be disabled if the frontbuffer mask contains a buffer relevant to PSR. no cap, that part is serious 🚨

Dirty frontbuffers relevant to PSR are tracked in busy_frontbuffer_bits." 🌸

---

🌈 SEE ALSO 🌈

• Kernel file ./drivers/gpu/drm/i915/display/intel_psr.c
• Panel Self Refresh (PSR/SRD)(9)
• intel_psr_disable(9)
• intel_psr_pause(9)
• intel_psr_resume(9)
• intel_psr_needs_vblank_notification(9)
• intel_psr_trigger_frame_change_event(9)
• intel_psr_min_set_context_latency(9)
• intel_psr_wait_for_idle_locked(9)
• intel_psr_flush(9)
• intel_psr_init(9)
• intel_psr_link_ok(9)
• intel_psr_lock(9)
• intel_psr_unlock(9)
• intel_psr_notify_dc5_dc6(9)
• intel_psr_dc5_dc6_wa_init(9)
• intel_psr_notify_pipe_change(9)
• intel_psr_notify_vblank_enable_disable(9)

---

Mwah 💋 this page says its source/version situation is ./drivers/gpu/drm/i915/display and the date is October 2026 — periodt, bestie 🫶💖