STRUCT DPU_RM(9)

🎀 struct dpu_rm(9) — the Kernel API Manual, bestie edition 🎀

okay so real talk, this page lives in the Kernel API Manual and it's literally all about struct dpu_rm — the DPU dynamic hardware resource manager. she's the main character who keeps track of all the hardware blocks the DPU has to hand out. iconic behaviour, no cap.

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✨ NAME ✨

struct dpu_rm — the DPU dynamic hardware resource manager 💅 like, she's the one who knows where every hardware block is and who gets to use it.

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🦋 SYNOPSIS 🦋

okay bestie, here's the whole shape of her, exactly as she is, don't touch a single character:

struct dpu_rm {
    struct dpu_hw_blk *pingpong_blks[PINGPONG_MAX - PINGPONG_0];
    struct dpu_hw_blk *mixer_blks[LM_MAX - LM_0];
    struct dpu_hw_blk *ctl_blks[CTL_MAX - CTL_0];
    struct dpu_hw_intf *hw_intf[INTF_MAX - INTF_0];
    struct dpu_hw_wb *hw_wb[WB_MAX - WB_0];
    struct dpu_hw_blk *cwb_blks[CWB_MAX - CWB_0];
    struct dpu_hw_blk *dspp_blks[DSPP_MAX - DSPP_0];
    struct dpu_hw_blk *merge_3d_blks[MERGE_3D_MAX - MERGE_3D_0];
    struct dpu_hw_blk *dsc_blks[DSC_MAX - DSC_0];
    struct dpu_hw_sspp *hw_sspp[SSPP_MAX - SSPP_NONE];
    struct dpu_hw_blk *cdm_blk;
    bool has_legacy_ctls;
 };

look at her. arrays everywhere. it's giving "I organized my entire closet by colour" energy and honestly? we stan 🫶

🧩 Members 🧩

• pingpong_blks — the array of pingpong hardware resources 🏓 all of them, living their best life in here.
• mixer_blks — the array of layer mixer hardware resources 🎛️
• ctl_blks — the array of ctl hardware resources ⚙️
• hw_intf — the array of intf hardware resources 🔌
• hw_wb — the array of wb hardware resources ✨
• dspp_blks — the array of dspp hardware resources 💫
• hw_sspp — the array of sspp hardware resources 🌸
• cdm_blk — the cdm hardware resource, just the one, a solo act 👑
• has_legacy_ctls — this one's a bool, and it means the DPU uses pre-ACTIVE CTL blocks 💀 so like, old-school CTLs. legacy vibes. respect the elders tho 🙈

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🌈 SEE ALSO 🌈

go look at these, i'm begging you, iykyk:

• the kernel file ./drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h
• struct msm_display_topology(9)
• dpu_rm_get_intf(9)
• dpu_rm_get_wb(9)
• dpu_rm_get_sspp(9)

they're all right there in ./drivers/gpu/drm/msm/disp/dpu1, like a little friend group 🦋

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okay that's the whole page bestie, you ate that 💖 this one's from ./drivers/gpu/drm/msm/disp/dpu1, dated October 2026, and it's struct dpu_rm(9) — go forth and manage your hardware resources, periodt 🔥👑