drm_of_get_p..._orientation(9)

🦋 drm_of_get_panel_orientation(9) — the Kernel API Manual, bestie edition 🦋

okay so this is a page from the Kernel API Manual and it's literally all about drm_of_get_panel_orientation — yes the name is a whole mouthful, the header truncates it, iykyk 💅

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✨ NAME ✨

drm_of_get_panel_orientation — bestie, this is the one that looks up the orientation of the panel through the "rotation" binding from a device tree node 🎀

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🌸 SYNOPSIS 🌸

int drm_of_get_panel_orientation (const struct device_node *np , enum
drm_panel_orientation *orientation );

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💖 ARGUMENTS 💖

• np — the device tree node of the panel 🌈 like, that's the thing you're inspecting, periodt.
• orientation — the orientation enum that gets filled in 🫶 it's the output, it's giving "here's your answer" energy.

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👑 DESCRIPTION 👑

So what it does: it looks up the rotation of a panel in the device tree ✨ The orientation of the panel is expressed as a property name "rotation" in the device tree. And the rotation in the device tree is counter clockwise — not me stressing this, it's literally in the spec 🙈

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🔥 RETURN 🔥

• 0 — when a valid rotation value (0, 90, 180, or 270) is read 💫 or when the rotation property just doesn't exist (no cap, that's a success too).
• a negative error code on failure 💀 so like, if you get a negative number, something went wrong, bestie.

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🧚 SEE ALSO 🧚

okay this is the whole friend group, go say hi to all of them 🎀

• Kernel file ./drivers/gpu/drm/drm_of.c
• overview(9)
• drm_of_crtc_port_mask(9)
• drm_of_find_possible_crtcs(9)
• drm_of_component_match_add(9)
• drm_of_component_probe(9)
• drm_of_find_panel_or_bridge(9)
• drm_of_lvds_get_dual_link_pixel_order(9)
• drm_of_lvds_get_dual_link_pixel_order_sink(9)
• drm_of_lvds_get_data_mapping(9)
• drm_of_get_data_lanes_count(9)
• drm_of_get_data_lanes_count_ep(9)
• drm_of_get_data_lanes_count_remote(9)
• drm_of_get_dsi_bus(9)

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💌 and that's the whole page, bestie — this one lives in ./drivers/gpu/drm, dated October 2026. slay, go read some device trees, ily 🫶✨