drm_atomic_s...ode_for_crtc(9)

💅 drm_atomic_s...ode_for_crtc(9) — like, the whole vibe

okay so bestie, we're in the Kernel API Manual today and this page is genuinely iconic — it's drm_atomic_set_mode_for_crtc, and no cap, it's giving "small function, big responsibilities" energy. ✨

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🌸 NAME 🌸

drm_atomic_set_mode_for_crtc — set mode for CRTC. that's it, that's the whole name, slay. 💖

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🎀 SYNOPSIS 🎀

int drm_atomic_set_mode_for_crtc (struct drm_crtc_state *state , const
       struct drm_display_mode *mode );

like, look at her. two args, one int coming back. main character energy fr fr. 🦋

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✨ ARGUMENTS ✨

• state — the CRTC whose incoming state to update 🫶 so like, the thing you're about to change
• mode — kernel-internal mode to use for the CRTC, or NULL to disable 👑 yep, NULL is valid and it means "turn it off, bestie"

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💜 DESCRIPTION 💜

Set a mode — and heads up, this one originates from the kernel, not from userspace, iykyk — on the desired CRTC state, and update the enable property while you're at it. 🌈

so like: pick your CRTC state, hand it a mode, and the enable property gets updated as part of the deal. two birds, one slay. 💅

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🔥 RETURN 🔥

Zero on success, error code on failure. and the very important glow-up detail: it cannot return -EDEADLK. ⭐ like, not even possible. don't @ me.

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🦋 SEE ALSO 🦋

• Kernel file ./drivers/gpu/drm/drm_atomic_uapi.c overview(9) 📁
• drm_atomic_set_mode_prop_for_crtc(9)
• drm_atomic_set_crtc_for_plane(9)
• drm_atomic_set_fb_for_plane(9)
• drm_atomic_set_colorop_for_plane(9)
• drm_atomic_set_crtc_for_connector(9)
• explicit fencing properties(9) 🧚

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lowkey a whole friend group of atomic setters, and this one's the mode-setting queen 👑

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and that's the page, bestie!! 🍓 this lil baddie lives over in ./drivers/gpu/drm, dated October 2026 — go read the whole kernel API manual, it's a vibe. 💀🌸💖