dpu_encoder_vblank_callback(9)

💖 dpu_encoder_vblank_callback(9) — Kernel API Manual 💖

okay so bestie, welcome to the dpu_encoder_vblank_callback(9) page — yes that's the manual name, it's a whole kernel API manual situation, and honestly? it's giving "small function, big responsibilities." let's get into it ✨

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🌸 NAME 🌸

dpu_encoder_vblank_callback — Notify virtual encoder of vblank IRQ reception

like, it literally tells the virtual encoder "hey girl, a vblank IRQ just showed up" 🦋

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✨ SYNOPSIS ✨

void dpu_encoder_vblank_callback (struct drm_encoder *drm_enc , struct dpu_encoder_phys *phy_enc );

no cap, that's the whole signature. it returns void — she gives nothing back, she only serves 💅

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🎀 ARGUMENTS 🎀

• drm_enc — Pointer to drm encoder structure. that's the DRM-side encoder babe 🫶
• phy_enc — Pointer to physical encoder. the physical one, the real one, the main character of this duo 👑

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🧚 NOTE 🧚

⚠️ This is called from IRQ handler context. so like… behave. interrupt context is NOT the place for a lil nap or a blocking call, iykyk 💀

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🌈 SEE ALSO 🌈

Kernel file ./drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c and the whole friend group:

• enum dpu_enc_rc_events(9)
• struct dpu_encoder_virt(9)
• dpu_encoder_get_drm_fmt(9)
• dpu_encoder_needs_periph_flush(9)
• dpu_encoder_is_widebus_enabled(9)
• dpu_encoder_is_dsc_enabled(9)
• dpu_encoder_get_crc_values_cnt(9)
• dpu_encoder_setup_misr(9)
• dpu_encoder_get_crc(9)
• dpu_encoder_helper_report_irq_timeout(9)
• dpu_encoder_helper_wait_for_irq(9)
• dpu_encoder_get_vsync_count(9)
• dpu_encoder_get_linecount(9)
• dpu_encoder_helper_split_config(9)
• dpu_encoder_use_dsc_merge(9)
• dpu_encoder_get_dsc_config(9)
• dpu_encoder_prepare_wb_job(9)
• dpu_encoder_cleanup_wb_job(9)
• dpu_encoder_virt_runtime_resume(9)
• dpu_encoder_underrun_callback(9)
• dpu_encoder_assign_crtc(9)
• dpu_encoder_toggle_vblank_for_crtc(9)
• dpu_encoder_frame_done_callback(9)
• _dpu_encoder_trigger_flush(9)
• _dpu_encoder_trigger_start(9)
• dpu_encoder_helper_trigger_start(9)
• _dpu_encoder_kickoff_phys(9)
• dpu_encoder_trigger_kickoff_pending(9)
• dpu_encoder_vsync_time(9)
• dpu_encoder_prepare_for_kickoff(9)
• dpu_encoder_is_valid_for_commit(9)
• dpu_encoder_start_frame_done_timer(9)
• dpu_encoder_kickoff(9)
• dpu_encoder_helper_phys_cleanup(9)
• dpu_encoder_helper_phys_setup_cdm(9)
• dpu_encoder_get_clones(9)
• dpu_encoder_init(9)
• dpu_encoder_wait_for_commit_done(9)
• dpu_encoder_wait_for_tx_complete(9)
• dpu_encoder_get_intf_mode(9)
• dpu_encoder_helper_get_cwb_mask(9)
• dpu_encoder_helper_get_dsc(9)

like yes that's a lot of siblings but they're all iconic in their own way, go read them fr fr 📚

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and that's the page bestie!! 🎀 source/version is ./drivers/gpu/drm/msm/disp/dpu1, dated October 2026, and it's still filed under dpu_encoder_vblank_callback(9) — slay, eat, no crumbs left 💅✨🦋