vpu_ipi_register(9)

💖 vpu_ipi_register 💖

okay so this is a page from the Kernel API Manual, and bestie, it's a short one but it's important — it's literally how you get your little ipi function wired up so the VPU can slide into your interrupts. let's get into it 🫶

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🌸 NAME 🌸

vpu_ipi_register — register an ipi function. that's the whole gig. iconic, concise, no notes 💅

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✨ SYNOPSIS ✨

int vpu_ipi_register (struct platform_device *pdev , enum ipi_id id ,
ipi_handler_t handler , const char *name , void *priv );

like yes she takes five whole arguments, don't panic, we're gonna go through every single one of them together 🎀

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🦋 ARGUMENTS 🦋

• pdev — the VPU platform device. your main character struct, the whole reason we're here fr fr 👑
• id — the IPI ID. which ipi we're talking about, identified by its enum ipi_id
• handler — the IPI handler. this is the function that gets called, your little callback bestie
• name — the IPI name. a const char *, so it's just a string, she's labeled
• priv — private data for the IPI handler. your void * to pass whatever your heart desires back to the handler 💖

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💜 DESCRIPTION 💜

so what does she do? she registers an ipi function so you can receive ipi interrupts from the VPU. that's it. that's the whole vibe. you hand over your handler, the VPU knows where to knock, and the interrupt finds its way home 😭🔥

lowkey beautiful when you think about it.

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⭐ RETURN ⭐

returns 0 if the ipi registers successfully 💚 — otherwise it's a failure, and ngl that means something went wrong. check your args, bestie 🙈

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🌈 SEE ALSO 🌈

your reading list, periodt. go look at these:

• the kernel file ./drivers/media/platform/mediatek/vpu/mtk_vpu.h
• VPU(9)
• enum ipi_id(9)
• enum rst_id(9)
• vpu_ipi_send(9)
• vpu_get_plat_device(9)
• vpu_wdt_reg_handler(9)
• vpu_get_vdec_hw_capa(9)
• vpu_get_venc_hw_capa(9)
• vpu_load_firmware(9)
• vpu_mapping_dm_addr(9)

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heads up: this page comes from the source path ./drivers/media/platform/media... and it's dated October 2026, and yeah, the original footer still says vpu_ipi_register(9) on it 💀 — so that's your little sign-off, mwah, go register some ipis bestie 🌸🧚‍♀️