drm_atomic_plane_disabling(9)

💅 drm_atomic_plane_disabling — check whether a plane is being disabled

okay so bestie, this one is from the Kernel API Manual (section 9, the driver-functions girlies ✨) and it's genuinely such a handy little vibe check for your atomic plane state 🦋

---

✨ SYNOPSIS ✨

bool drm_atomic_plane_disabling (struct drm_plane_state *old_plane_state
, struct drm_plane_state *new_plane_state );

returns a bool, takes two plane states, that's it, that's the whole slay 🎀

---

🌸 ARGUMENTS 🌸

• old_plane_state — the old atomic plane state, aka the before pic 📸
• new_plane_state — the new atomic plane state, aka the glow-up (or the downgrade, we don't judge 💅)

---

👑 DESCRIPTION 👑

so basically it checks the atomic state of a plane to figure out whether it's being disabled or not. that's the whole main character job, no cap 💖

and like — it also WARNs if it catches an invalid state, because the rules are the rules, periodt: both CRTC and FB need to either both be NULL or both be non-NULL. no mixing and matching, that's not the vibe 🙈

---

⭐ RETURN ⭐

true if the plane is being disabled, false otherwise. genuinely that simple, iykyk 🔥

---

🫶 SEE ALSO 🫶

• Kernel file ./include/drm/drm_atomic_helper.h — go read it, it's giving required reading 📚
• drm_atomic_crtc_for_each_plane(9)
• drm_atomic_crtc_state_for_each_plane(9)
• drm_atomic_crtc_state_for_each_plane_state(9)
• drm_atomic_plane_enabling(9) — the flip side of the coin bestie, obsessed 🌈

---

okay bye ily, this page lives in ./include/drm, it's the October 2026 version, and it's drm_atomic_plane_disabling(9) in case you forgot already 😭✨ go disable some planes responsibly 💜