_dpu_plane_calc_bw(9)

💖 _dpu_plane_calc_bw(9) 💖

okay bestie, welcome to the Kernel API Manual entry for _dpu_plane_calc_bw(9) — yes, the leading underscore is part of the name, we don't make the rules 💅. This one is literally about calculating the bandwidth required for a plane, and it's giving “math but make it display-driver glam” ✨.

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🌸 NAME 🌸

_dpu_plane_calc_bw — calculate bandwidth required for a plane. That's the whole assignment, no cap 🎀.

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✨ SYNOPSIS ✨

u64 _dpu_plane_calc_bw (const struct dpu_mdss_cfg *catalog , const struct msm_format *fmt , const struct drm_display_mode *mode , struct dpu_sw_pipe_cfg *pipe_cfg );

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🎀 ARGUMENTS 🎀

• catalog — points to the dpu catalog structure. iconic little config source 💖
• fmt — pointer to source buffer format. yes bestie, the format matters 🦋
• mode — pointer to drm display mode. main character display timing energy 👑
• pipe_cfg — pointer to pipe configuration. the pipe setup lives here 🌸

Result: Updates calculated bandwidth in the plane state.

BW Equation: src_w * src_h * bpp * fps * (v_total / v_dest)

Prefill BW Equation: line src bytes * line_time

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🦋 SEE ALSO 🦋

Kernel file: ./drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c

• _dpu_plane_calc_clk(9)
• _dpu_plane_calc_fill_level(9)
• _dpu_plane_set_qos_lut(9)
• _dpu_plane_set_qos_ctrl(9)
• _dpu_plane_set_ot_limit(9)
• _dpu_plane_set_qos_remap(9)
• _dpu_plane_color_fill(9)
• dpu_plane_flush(9)
• dpu_plane_set_error(9)
• dpu_plane_init(9)
• dpu_plane_init_virtual(9)

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mwah 💋 — footer source/version: ./drivers/gpu/drm/msm/disp/dpu1, date: October 2026. slay, that's the whole page 🫶