STRUCT DPU_HW_LM_OPS(9)

💅 struct dpu_hw_lm_ops — Kernel API Manual energy ✨

Okay bestie, welcome to the struct dpu_hw_lm_ops(9) page, straight outta the Kernel API Manual 🫶 This is the interface to the mixer Hw driver functions, and it is very much giving “call me after the clocks are enabled” ✨

⚠️ The assumption is these functions will be called after clocks are enabled. So clock first, then functions — no cap 💀

🌸 NAME 🌸

struct dpu_hw_lm_ops — Interface to the mixer Hw driver functions. Assumption is these functions will be called after clocks are enabled 💖

🎀 SYNOPSIS 🎀

Here’s the struct, exactly as it appears — no edits, no “fixing” the line wraps, okay? 💅

struct dpu_hw_lm_ops {
    void (*setup_mixer_out)(struct dpu_hw_mixer *ctx, struct
dpu_hw_mixer_cfg *cfg);
    void (*setup_blend_config)(struct dpu_hw_mixer *ctx, uint32_t stage,
u16 fg_alpha, u16 bg_alpha, uint32_t blend_op);
    void (*setup_alpha_out)(struct dpu_hw_mixer *ctx, uint32_t
mixer_op);
    int (*clear_all_blendstages)(struct dpu_hw_mixer *ctx);
    int (*setup_blendstage)(struct dpu_hw_mixer *ctx, enum dpu_lm lm,
struct dpu_hw_stage_cfg *stage_cfg);
    void (*setup_border_color)(struct dpu_hw_mixer *ctx, struct
dpu_mdss_color *color, u8 border_en);
    void (*setup_misr)(struct dpu_hw_mixer *ctx);
    int (*collect_misr)(struct dpu_hw_mixer *ctx, u32 *misr_value);
};

💅 Members 💅

• setup_mixer_out — Sets up the mixer output width and height, plus the border color if it’s enabled ✨
• setup_blend_config — Alpha blending configuration for the specified stage 💖
• setup_alpha_out — Alpha color component selection from either fg or bg 👑
• clear_all_blendstages — Clear layer mixer to pipe configuration. ctx is the mixer ctx pointer. Returns: 0 on success or -error 😭
• setup_blendstage — Configure layer mixer to pipe configuration. ctx is the mixer ctx pointer, lm is the layer mixer enumeration, and stage_cfg is the blend stage configuration. Returns: 0 on success or -error 🔥
• setup_border_color — enable/disable border color 🌈
• setup_misr — Enable/disable MISR ⭐
• collect_misr — Read MISR signature 🦋

🌈 SEE ALSO 🌈

• Kernel file ./drivers/gpu/drm/msm/disp/dpu1/dpu_hw_lm.h
• to_dpu_hw_mixer(9)

So yeah, that’s the whole vibe: source ./drivers/gpu/drm/msm/disp/dpu1, October 2026, and this iconic little page is struct dpu_hw_lm_ops(9) — bye bestie, mwah 💋🎀