drm_crtc_sup...legacy_gamma(9)

💖 drm_crtc_sup...legacy_gamma(9) — the kernel API manual, bestie edition 💖

okay so picture this: it's a Linux kernel API manual page, the manual name is literally drm_crtc_sup...legacy_gamma(9), and it's here to answer exactly one (1) question. that's it. that's the whole vibe. let's get into it 🎀

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✨ NAME ✨

drm_crtc_supports_legacy_gamma — does the crtc support legacy gamma correction table

like… that's the entire personality. it checks a thing and tells you yes or no. icon behavior honestly 👑

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🌸 SYNOPSIS 🌸

bool drm_crtc_supports_legacy_gamma(struct drm_crtc *crtc);

look at her. two words, one argument, no drama. bool in the front because she's a yes/no girlie, and a single pointer because she doesn't need a whole crowd 🦋

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🫶 ARGUMENTS 🫶

• crtc — the CRTC object. that's it, that's the whole guest list. one CRTC, walking in solo, main character energy ✨

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💅 DESCRIPTION 💅

so what does she actually do? she returns true/false depending on whether the given crtc supports setting the legacy gamma correction table. that's it!! that's the function!! no cap, no side quests, no weird surprises — just a clean little boolean handing you the tea ☕

ngl it's giving "vibe check for gamma" and honestly? we love a focused queen. she knows her job and she does it 💖

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🌈 SEE ALSO 🌈

okay the friend group is LARGE. she rolls deep. here's literally everyone she wants you to meet, no skips, no cuts, iykyk:

• Kernel file ./drivers/gpu/drm/drm_color_mgmt.c overview(9) — the starting point, the lore drop
• drm_color_ctm_s31_32_to_qm_n(9)
• drm_crtc_enable_color_mgmt(9)
• drm_mode_crtc_set_gamma_size(9)
• drm_crtc_legacy_gamma_set(9)
• drm_mode_gamma_set_ioctl(9)
• drm_mode_gamma_get_ioctl(9)
• drm_get_color_encoding_name(9)
• drm_get_color_range_name(9)
• drm_plane_create_color_properties(9)
• drm_color_lut_check(9)
• drm_crtc_load_gamma_888(9)
• drm_crtc_load_gamma_565_from_888(9)
• drm_crtc_load_gamma_555_from_888(9)
• drm_crtc_fill_gamma_888(9)
• drm_crtc_fill_gamma_565(9)
• drm_crtc_fill_gamma_555(9)
• drm_crtc_load_palette_8(9)
• drm_crtc_fill_palette_332(9)
• drm_crtc_fill_palette_8(9)
• drm_color_lut32_check(9)

that's twenty-one whole references. twenty-one!! she said "you WILL understand color management" and honestly? slay 🧚

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and that's the page, bestie 💜 this little gem lives under ./drivers/gpu/drm, and the version info stamps it as October 2026 — so go forth, call drm_crtc_supports_legacy_gamma, get your bool, and remember: gamma table support is a spectrum and this function will tell you exactly where your crtc stands 🌸✨🎀