drm_atomic_g..._plane_state(9)

💅 drm_atomic_g..._plane_state(9) ✨

okay so bestie, welcome to the Kernel API Manual, and specifically to drm_atomic_g..._plane_state(9) — yes the header is abbreviated with dots, that's just how the man page page-header rolls, the real function name is right below and it ate. 🎀

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🌸 NAME 🌸

drm_atomic_get_old_plane_state — get plane state, if it exists 🦋

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✨ SYNOPSIS ✨

struct drm_plane_state * drm_atomic_get_old_plane_state (const struct
drm_atomic_commit *state , struct drm_plane *plane );

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🫶 ARGUMENTS 🫶

• state — the global atomic state object. yes the global one, the main character of the atomic world 👑
• plane — the plane you wanna grab. go get her 💅

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💖 DESCRIPTION 💖

so what does this function actually do? it returns the old plane state for the given plane. that's it, that's the whole vibe. 🌈

but listen — if that plane is not part of the global atomic state? you get NULL. not an error, not a crash, just NULL. lowkey the politest way to say "she's not here bestie" 😭

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🧚 SEE ALSO 🧚

like, so many friends in the family group chat. no cap, here's the whole list 💜

• Kernel file ./include/drm/drm_atomic.h
• struct drm_crtc_commit(9)
• struct drm_private_state_funcs(9)
• struct drm_private_obj(9)
• drm_for_each_privobj(9)
• struct drm_private_state(9)
• struct drm_atomic_commit(9)
• drm_crtc_commit_get(9)
• drm_crtc_commit_put(9)
• drm_atomic_commit_get(9)
• drm_atomic_commit_put(9)
• drm_atomic_get_old_crtc_state(9)
• drm_atomic_get_new_crtc_state(9)
• drm_atomic_get_new_plane_state(9)
• drm_atomic_get_old_connector_state(9)
• drm_atomic_get_new_connector_state(9)
• __drm_atomic_get_current_plane_state(9)
• for_each_oldnew_connector_in_state(9)
• for_each_old_connector_in_state(9)
• for_each_new_connector_in_state(9)
• for_each_oldnew_crtc_in_state(9)
• for_each_old_crtc_in_state(9)
• for_each_new_crtc_in_state(9)
• for_each_oldnew_colorop_in_state(9)
• for_each_new_colorop_in_state(9)
• for_each_oldnew_plane_in_state(9)
• for_each_oldnew_plane_in_state_reverse(9)
• for_each_new_plane_in_state_reverse(9)
• for_each_old_plane_in_state(9)
• for_each_new_plane_in_state(9)
• for_each_oldnew_private_obj_in_state(9)
• for_each_old_private_obj_in_state(9)
• for_each_new_private_obj_in_state(9)
• drm_atomic_crtc_needs_modeset(9)
• drm_atomic_crtc_effectively_active(9)
• struct drm_bus_cfg(9)
• struct drm_bridge_state(9)

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k that's the whole page bestie, go get that old plane state 💅✨

side note: this page lives in ./include/drm and it's dated October 2026 — genuinely iconic energy, we love a forward-thinking timestamp 🎀💜 mwah, bye! 🦋