amdgpu_dm_u...e_color_mgmt(9)

💅 amdgpu_dm_update_plane_color_mgmt(9) — like, the whole vibe

okay so bestie, welcome to the Kernel API Manual ✨ — today we're talking about amdgpu_dm_update_plane_color_mgmt, which honestly is a lot of letters but she's iconic and she does exactly one thing and she does it slayfully 🎀

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🌸 NAME 🌸

amdgpu_dm_update_plane_color_mgmt — literally maps DRM color management over to the DC plane. that's it. that's the job. no cap 💖

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✨ SYNOPSIS ✨

int amdgpu_dm_update_plane_color_mgmt (struct dm_crtc_state *crtc ,
struct drm_plane_state *plane_state , struct dc_plane_state
*dc_plane_state );

she takes three args and returns an int, periodt 🫶

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🦋 ARGUMENTS 🦋

• crtc — the amdgpu_dm crtc state, aka the main character 🌟
• plane_state — the DRM plane state, she's giving supporting-role-but-important
• dc_plane_state — the target DC surface, the destination of all this color-management lore 💫

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🧚 DESCRIPTION 🧚

so what she actually does: she updates the underlying dc_stream_state's input transfer function (ITF) in preparation for the hardware commit 🔥 and which transfer function she uses? that depends entirely on the preparation that was done on the stream for color management. so like, the setup determines the glow-up, iykyk 💅

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👑 RETURN 👑

• 0 on success, we love a win 🌈
• -ENOMEM if the mem allocation fails 😭 (memory said "not today")

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🍓 SEE ALSO 🍓

the whole friend group, fr fr — first the kernel file:

• ./drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c

and then the squad:

• overview(9)
• amdgpu_dm_init_color_mod(9)
• __extract_blob_lut(9)
• __extract_blob_lut32(9)
• __is_lut_linear(9)
• __drm_lut_to_dc_gamma(9)
• __drm_lut32_to_dc_gamma(9)
• __drm_ctm_to_dc_matrix(9)
• __drm_ctm_3x4_to_dc_matrix(9)
• __set_legacy_tf(9)
• __set_output_tf(9)
• __set_output_tf_32(9)
• __set_input_tf(9)
• __set_input_tf_32(9)
• amdgpu_dm_verify_lut3d_size(9)
• amdgpu_dm_verify_lut_sizes(9)
• amdgpu_dm_check_crtc_color_mgmt(9)
• amdgpu_dm_update_crtc_color_mgmt(9)

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lowkey reminder: this page lives at ./drivers/gpu/drm/amd/display/... and she's dated October 2026, filed under amdgpu_dm_u...e_color_mgmt(9) — that's the whole footer, bestie, I didn't forget a single crumb 💖

k that's the page, go forth and color-manage responsibly, mwah 💋✨