STRUCT DRM_MODE_MODEINFO(9)

💖 struct drm_mode_modeinfo(9) 💖

okay so this is a page straight out of the Kernel API Manual (yes, that one) and it's all about struct drm_mode_modeinfo, which is literally just display mode info. cute name, big job. let's get into it bestie 🫶

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✨ SYNOPSIS ✨

like, here's the whole struct, no notes, copy it exactly or the compiler will simply end you 💀

struct drm_mode_modeinfo {
    __u32 clock;
    __u16 hdisplay;
    __u16 hsync_start;
    __u16 hsync_end;
    __u16 htotal;
    __u16 hskew;
    __u16 vdisplay;
    __u16 vsync_start;
    __u16 vsync_end;
    __u16 vtotal;
    __u16 vscan;
    __u32 vrefresh;
    __u32 flags;
    __u32 type;
    char name[DRM_DISPLAY_MODE_LEN];
 };

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🎀 Members 🎀

time for the roster 😌 every field is a main character, no filler:

• clock — pixel clock, measured in kHz. the tempo of your pixels fr fr.
• hdisplay — horizontal display size.
• hsync_start — horizontal sync start.
• hsync_end — horizontal sync end.
• htotal — horizontal total size.
• hskew — horizontal skew.
• vdisplay — vertical display size.
• vsync_start — vertical sync start.
• vsync_end — vertical sync end.
• vtotal — vertical total size.
• vscan — vertical scan.
• vrefresh — approximate vertical refresh rate in Hz (key word: approximate, she's not making promises 💅).
• flags — a bitmask of misc. flags, see the DRM_MODE_FLAG_* defines.
• type — a bitmask of type flags, see the DRM_MODE_TYPE_* defines.
• name — a string describing the mode resolution. yes queen, label yourself 🌸

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🦋 Description 🦋

so this is the user-space API display mode information structure. iykyk. if you were looking for the kernel-side version, that's a whole different girl — go see struct drm_display_mode 🔥

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🌈 SEE ALSO 🌈

the friend group 🫶 all of these are linked and you will be clicking through them:

• Kernel file ./include/uapi/drm/drm_mode.h overview(9)
• struct drm_mode_get_plane(9)
• struct drm_mode_get_connector(9)
• struct drm_mode_property_enum(9)
• struct drm_mode_get_property(9)
• struct drm_mode_fb_cmd2(9)
• enum drm_colorop_type(9)
• enum drm_colorop_lut3d_interpolation_type(9)
• enum drm_colorop_lut1d_interpolation_type(9)
• struct drm_plane_size_hint(9)
• struct hdr_metadata_infoframe(9)
• struct hdr_output_metadata(9)
• DRM_MODE_PAGE_FLIP_EVENT(9)
• DRM_MODE_PAGE_FLIP_ASYNC(9)
• DRM_MODE_PAGE_FLIP_FLAGS(9)
• struct drm_mode_create_dumb(9)
• DRM_MODE_ATOMIC_TEST_ONLY(9)
• DRM_MODE_ATOMIC_NONBLOCK(9)
• DRM_MODE_ATOMIC_ALLOW_MODESET(9)
• DRM_MODE_ATOMIC_FLAGS(9)
• struct drm_mode_create_blob(9)
• struct drm_mode_destroy_blob(9)
• struct drm_mode_create_lease(9)
• struct drm_mode_list_lessees(9)
• struct drm_mode_get_lease(9)
• struct drm_mode_revoke_lease(9)
• struct drm_mode_rect(9)
• struct drm_mode_closefb(9)

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ngl bestie, if you're touching modesetting, read drm_mode.h first. it's giving "required reading" energy 📚✨

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and that's the whole vibe check 💜 this one lives in ./include/uapi/drm, dated October 2026, and it's filed under struct drm_mode_modeinfo(9) — go off, mode queen 👑💅