STRUCT DPU_DRM_PIX_EXT_V1(9)

✨ struct dpu_drm_pix_ext_v1 ✨

okay so bestie, welcome to the struct dpu_drm_pix_ext_v1 page 💖 this is straight out of the Kernel API Manual, section 9, and it's literally just version 1 of the pixel ext structure — that's the whole NAME, no cap 🎀

Think of it as the little buddy that tells the display hardware "hey, grab a few extra pixels off the edges, mmmkay?" 🦋

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🌸 SYNOPSIS 🌸

here's the shape of it, exactly as it lives, do not touch:

struct dpu_drm_pix_ext_v1 {
    int32_t num_ext_pxls_lr[DPU_MAX_PLANES];
    int32_t num_ext_pxls_tb[DPU_MAX_PLANES];
    int32_t left_ftch[DPU_MAX_PLANES];
    int32_t right_ftch[DPU_MAX_PLANES];
    int32_t top_ftch[DPU_MAX_PLANES];
    int32_t btm_ftch[DPU_MAX_PLANES];
    int32_t left_rpt[DPU_MAX_PLANES];
    int32_t right_rpt[DPU_MAX_PLANES];
    int32_t top_rpt[DPU_MAX_PLANES];
    int32_t btm_rpt[DPU_MAX_PLANES];
 };

like, every single field is an int32_t array sized DPU_MAX_PLANES — she's consistent, she's organized, she ate 💅

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🎀 Members 🎀

okay let's meet the cast, one by one, and yes they all get their moment 👑

• num_ext_pxls_lr — the total number of horizontal pixels. the lr is giving left-right, iykyk 👀
• num_ext_pxls_tb — the total number of vertical lines. tb = top-bottom, we stay matching 🌈
• left_ftch — how many extra pixels to overfetch from the left side 🫶
• right_ftch — how many extra pixels to overfetch from the right side 🫶
• top_ftch — how many extra lines to overfetch from the top ⭐
• btm_ftch — how many extra lines to overfetch from the bottom ⭐
• left_rpt — how many extra pixels to repeat from the left 💫
• right_rpt — how many extra pixels to repeat from the right 💫
• top_rpt — how many extra lines to repeat from the top 🌸
• btm_rpt — how many extra lines to repeat from the bottom 🌸

quick vibe check: fetch and repeat are two different things here — overfetch grabs extra, repeat duplicates extra. both are in the struct, both matter, don't mix them up bestie 😭

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🔥 SEE ALSO 🔥

the whole friend group, plus where she actually lives:

kernel file ./drivers/gpu/drm/msm/disp/dpu1/dpu_hw_util.h

• struct dpu_hw_blk(9)
• struct dpu_hw_scaler3_de_cfg(9)
• struct dpu_hw_scaler3_cfg(9)
• struct dpu_drm_de_v1(9)
• struct dpu_drm_scaler_v2(9)
• struct dpu_hw_qos_cfg(9)

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and that's the whole page, bestie, go forth and overfetch responsibly 🧚💜

sign-off szn: this one lives at ./drivers/gpu/drm/msm/disp/dpu1, dated October 2026, and it's struct dpu_drm_pix_ext_v1(9) forever and always — periodt 💅✨