drm_get_pan...tation_quirk(9)

💅 NAME 💅

drm_get_panel_orientation_quirk — bestie, this is the vibe check for panel orientation quirks ✨

So this is a page from the Kernel API Manual (yes, the kernel has lore, and this is part of it 👑), and it's all about one little function that goes looking for panel orientation quirks. Let's get into it 🫶

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✨ SYNOPSIS ✨

int drm_get_panel_orientation_quirk (int width , int height );

That's literally it, no cap. Two ints in, one int out 💅

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🎀 ARGUMENTS 🎀

• width — the width in pixels of the panel 🌸
• height — the height in pixels of the panel 🦋

Two numbers, that's all she needs 💖

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🧚 DESCRIPTION 🧚

Okay so here's the tea ☕: this function checks for platform specific quirks — like, DMI based ones — that hand over info about panel_orientation for systems where you literally cannot probe that from the hard-/firm-ware 😭 The hardware is not giving, so the quirk table has to step in and save the day 🫶

And the way it avoids false-positives? Iconic behavior honestly: the function takes the panel resolution as an argument and checks that against the resolution expected by the quirk-table entry 👑 So like, it's not just guessing — it's matching you against the exact resolution the quirk table is expecting ✨

Not me also flagging this: this function is also used outside of the drm-subsys — by for example the efifb code 🔥 Because of this, this function gets compiled into its own kernel-module when built as a module 💀 (yes, she has main character energy, she gets her own module)

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🦋 RETURN 🦋

It returns a DRM_MODE_PANEL_ORIENTATION_* value if there's a quirk for this system 💖

Or DRM_MODE_PANEL_ORIENTATION_UNKNOWN if there's no quirk 🙈

Simple as that, periodt ⭐

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💜 SEE ALSO 💜

• Kernel file ./drivers/gpu/drm/drm_panel_orientation_quirks.c 🍓

That's where the quirk table actually lives, iykyk 🌈

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Sign-off time 🎀 this page lives in ./drivers/gpu/drm and it's dated October 2026 ⭐ Go check out all the quirks bestie, they're lowkey iconic 💅✨