STRUCT MPCC(9)

💅 struct mpcc(9)

okay bestie, so this is the struct mpcc page from the Kernel API Manual — and no, I didn't forget the manual name, it's right there, we're just vibing. This struct is literally the MPCC connection and blending configuration for a single MPCC instance. Periodt. 🎀

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✨ SYNOPSIS ✨

struct mpcc {
    int mpcc_id;
    int dpp_id;
    struct mpcc *mpcc_bot;
    struct mpcc_blnd_cfg blnd_cfg;
    struct mpcc_sm_cfg sm_cfg;
    bool shared_bottom;
 };

like, that's the whole thing. copy it exactly, don't @ me 🫶

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🌸 Members 🌸

• mpcc_id — the MPCC physical instance. yes, it's an int. it's giving ID energy 🔥
• dpp_id — the DPP input feeding into this MPCC 💖
• mpcc_bot — pointer to the bottom layer MPCC. it's NULL when not connected — so if you see NULL, nobody's home, no cap 🙈
• blnd_cfg — the blending configuration for this MPCC. a whole struct mpcc_blnd_cfg, iconic ✨
• sm_cfg — the stereo mix setting for this MPCC. a struct mpcc_sm_cfg, slay 💅
• shared_bottom — true if the MPCC output goes to both OPP and DWB endpoints. otherwise false. that's it, that's the rule ⭐

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🦋 Description 🦋

so basically this struct is used as a node in an MPC tree. main character node energy, honestly 👑🌳

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🔍 SEE ALSO 🔍

• Kernel file ./drivers/gpu/drm/amd/display/dc/inc/hw/mpc.h overview(9)
• enum mpcc_alpha_blend_mode(9)
• struct mpcc_blnd_cfg(9)
• struct mpc_tree(9)
• struct mpc_funcs(9)

go read them, iykyk 📚✨

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lowkey reminder: this lives under ./drivers/gpu/drm/amd/display/... in the kernel tree if you're out here grepping 💀

and that's the page!! written October 2026 for the Kernel API Manual version of struct mpcc(9) — mwah, go forth and configure your MPCCs responsibly bestie 💖🎀🦋