STRUCT DRM_PROPERTY_ENUM(9)

💅 struct drm_property_enum(9)

okay so bestie, welcome to the Kernel API Manual ✨ — today's main character is struct drm_property_enum, and honestly? she's giving "tiny struct, big responsibilities." let's get into it 🎀

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✨ NAME ✨

struct drm_property_enum — symbolic values for enumerations 💖

like, she's the reason your enum values have cute little names instead of just being mystery numbers. iconic behavior fr fr.

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🦋 SYNOPSIS 🦋

struct drm_property_enum {
    uint64_t value;
    struct list_head head;
    char name[DRM_PROP_NAME_LEN];
 };

look at her. three fields. no notes. 🫶

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🌸 Members 🌸

• value — the numeric property value for this enum entry ✨

okay so heads up, this is the part you gotta read carefully: if the property has the type DRM_MODE_PROP_BITMASK, then value stores a bitshift, not a bitmask. 🫠 like, in other words, the enum entry is enabled if the bit number value is set in the property's value. so this enum entry has the bitmask 1 << value. yes, that's a shift, not a mask — do not get it twisted bestie 💅

• head — the list of enum values, linked to drm_property.enum_list 🔗

she's on a list. literally. it's a linked list situation and she's connected to drm_property.enum_list.

• name — symbolic name for the enum 🏷️

the cute human-readable label. the vibe check of the struct, if you will.

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💜 Description 💜

so for enumeration and bitmask properties, this structure stores the symbolic decoding for each value 🧚 and like, a real example: it's used for the rotation property. rotating things, but make it symbolic. periodt. 💫

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🔥 SEE ALSO 🔥

Kernel file ./include/drm/drm_property.h — plus these besties:

• struct drm_property(9)
• struct drm_property_blob(9)
• drm_property_type_is(9)
• drm_property_find(9)

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okay and that's the whole page! 🍓 sources say this lives over in ./include/drm, dated October 2026, and she goes by struct drm_property_enum(9) — mwah 💋 go forth and enumerate, queen 👑🌈