STRUCT DPU_PINGPONG_CFG(9)

💅 struct dpu_pingpong_cfg(9) 💅

okay bestie so this is a page out of the Kernel API Manual and it's literally all about struct dpu_pingpong_cfg — the info squad for the PING-PONG blocks 🏓✨. Think of it as the little ID card every ping-pong block carries around, iykyk.

Two things got folded into the NAME up top and we are not dropping them, periodt:

• @id — enum identifying this block 🪪
• @base — register offset of this block 📍

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✨ SYNOPSIS ✨

the shape of it, no cap:

struct dpu_pingpong_cfg {
    DPU_HW_BLK_INFO;
    u32 merge_3d;
    unsigned int intr_done;
    unsigned int intr_rdptr;
    const struct dpu_pingpong_sub_blks *sblk;
 };

note the DPU_HW_BLK_INFO; macro chilling at the top and merge_3d as a u32 — both iconic, both exactly as written 🫶

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🎀 Members 🎀

• intr_done — the index for the PINGPONG done interrupt 🔔 like, that's the one that tells you the block is done done.
• intr_rdptr — the index for the PINGPONG readpointer done interrupt 📖 a whole separate interrupt index for when the readpointer finishes its thing.
• sblk — sub-blocks information 🌸 a pointer to the sub-block details, main character energy for the little pieces inside.

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💜 SEE ALSO 💜

Kernel file: ./drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h

and the whole friend group it runs with, fr fr — no skipping, all of them:

• struct dpu_scaler_blk(9)
• struct dpu_pp_blk(9)
• struct dpu_dsc_blk(9)
• struct dpu_sspp_v13_rec_blk(9)
• enum dpu_qos_lut_usage(9)
• struct dpu_qos_lut_entry(9)
• struct dpu_qos_lut_tbl(9)
• struct dpu_rotation_cfg(9)
• struct dpu_caps(9)
• struct dpu_sspp_sub_blks(9)
• struct dpu_lm_sub_blks(9)
• struct dpu_dspp_sub_blks(9)
• struct dpu_dsc_sub_blks(9)
• struct dpu_sspp_cfg(9)
• struct dpu_lm_cfg(9)
• struct dpu_dspp_cfg(9)
• struct dpu_merge_3d_cfg(9)
• struct dpu_dsc_cfg(9)
• struct dpu_intf_cfg(9)
• struct dpu_wb_cfg(9)
• struct dpu_vbif_dynamic_ot_cfg(9)
• struct dpu_vbif_dynamic_ot_tbl(9)
• struct dpu_vbif_qos_tbl(9)
• struct dpu_vbif_cfg(9)
• struct dpu_cdm_cfg(9)
• struct dpu_perf_cdp_cfg(9)
• struct dpu_mdss_version(9)
• struct dpu_perf_cfg(9)
• struct dpu_mdss_cfg(9)

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bestie reminder 🫶 this config struct is documented in the ./drivers/gpu/drm/msm/disp/dpu1 part of the tree — that's the vibe check on where it lives.

okay that's the whole page and we ate, genuinely 💅✨

── 🌈 sign-off 🌈 ──

this masterpiece dropped October 2026, straight out of ./drivers/gpu/drm/msm/disp/dpu1 — mwah, obsessed, take care of ur ping-pong blocks 🎀🦋💖