drm_mode_addfb(9)

💖 drm_mode_addfb(9) 💖

okay so real talk, this is a page straight outta the Kernel API Manual and it's about drm_mode_addfb — the vibe is very "let me add a framebuffer to your graphics config bestie" ✨

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🎀 NAME 🎀

drm_mode_addfb — add an FB to the graphics configuration 💅

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⭐ SYNOPSIS ⭐

int drm_mode_addfb (struct drm_device *dev , struct drm_mode_fb_cmd *or
, struct drm_file *file_priv );

like, that's the whole signature, no cap 🫶

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🌸 ARGUMENTS 🌸

• dev — the drm device for the ioctl 👑
• or — pointer to the request structure (yes it's literally named or, iconic)
• file_priv — the drm file 🎀

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🦋 DESCRIPTION 🦋

So you wanna add a new FB to the specified CRTC, given a user request? slay, that's literally what this does 💖

Important lore tho: this is the original addfb ioctl, and it only supported RGB formats. that's the whole reason drm_mode_addfb2(9) exists, iykyk 😭

It's called by the user via ioctl, or by an in-kernel client. both valid, both main character energy ✨

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🔥 RETURN 🔥

Zero on success, negative errno on failure. simple as that, fr fr 💀

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/gpu/drm/drm_framebuffer.c
• overview(9)
• drm_mode_addfb2(9)
• drm_mode_rmfb(9)
• drm_mode_getfb(9)
• drm_mode_getfb2_ioctl(9)
• drm_mode_dirtyfb_ioctl(9)
• drm_fb_release(9)
• drm_framebuffer_init(9)
• drm_framebuffer_lookup(9)
• drm_framebuffer_unregister_private(9)
• drm_framebuffer_cleanup(9)
• drm_framebuffer_remove(9)

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okay that's the whole page bestie, go forth and add those framebuffers 🧚‍♀️

this lil love letter to graphics config lives in ./drivers/gpu/drm, dated October 2026 — mwah, bye! 💜🎀💅