of_drm_find_panel(9)

📦 version 7.3.1, in nixpkgs unstable

💅 of_drm_find_panel(9) — the manual page, but make it make sense

okay bestie, welcome to the of_drm_find_panel(9) page from the Kernel API Manual. this is the glow-up edition where we look up and reference a panel by device tree node, and honestly? it's giving "find your friend in a crowd and grab their hand so they don't wander off" energy. 🫶

✨ NAME ✨

of_drm_find_panel — look up and reference a panel by device tree node

🎀 SYNOPSIS 🎀

struct drm_panel * of_drm_find_panel (const struct device_node *np );

🌸 ARGUMENTS 🌸

  • np — device tree node of the panel. that's the little address tag for the panel you're hunting for, bestie. 🏷️

🦋 DESCRIPTION 🦋

So here's the vibe: this function searches the set of registered panels for one that matches the given device tree node. it's literally scrolling through the group chat of panels like "are you the one? are you the one?" until it finds the match. 🔍

If a matching panel is found, the panel's reference count is incremented before returning a pointer to it. that's the important part — it's not just pointing at the panel, it's claiming it, like saving a seat. 👑

⚠️ The caller must call drm_panel_put when it no longer needs the panel pointer. no cap, bestie — you gotta release the reference or you're being rude to the kernel. 💀

Possible error codes returned by this function:

  • EPROBE_DEFER — the panel device has not been probed yet, and the caller should retry later. it's not ghosting you, it's just not ready yet. try again in a bit. 😭
  • ENODEV — the device is not available (status != "okay" or "ok"). basically the panel is not in a state where it can show up. 🚫

⭐ RETURN ⭐

A reference-counted pointer to the panel registered for the specified device tree node — or an ERR_PTR if no panel matching the device tree node can be found. so you either get the panel with a whole reference you now own, or you get the error-wrapped version of "not found, slay, try again." 🎯

🌈 SEE ALSO 🌈

like, go read these next, they're all in the group chat:

and that's the whole page, bestie — no notes, all facts, iconic behavior only. 💖

this edition came from ./drivers/gpu/drm, dated October 2026, and it's still the of_drm_find_panel(9) manual page you know and love — just with way better vibes. periodt. 💅✨

📦 where this page comes from