STRUCT VDEC_VPU_IPI_INIT_ACK(9)

💅 struct vdec_vpu_ipi_init_ack — a Kernel API Manual moment

okay bestie, welcome to the Kernel API Manual ✨ (yes that's the manual name, we're fancy here), and today's main character is struct vdec_vpu_ipi_init_ack. Say that five times fast. Actually don't, you'll pull something. 💀

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🌸 NAME 🌸

struct vdec_vpu_ipi_init_ack — literally the struct for VPU_IPIMSG_DEC_INIT_ACK. that's it. that's the whole vibe check. 🫶

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✨ SYNOPSIS ✨

here she is in all her glory, no cap, every field exactly where it belongs 👑

struct vdec_vpu_ipi_init_ack {
    uint32_t msg_id;
    int32_t status;
    uint64_t ap_inst_addr;
    uint32_t vpu_inst_addr;
    uint32_t vdec_abi_version;
    uint32_t inst_id;
 };

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🎀 Members 🎀

• msg_id — this one's VPU_IPIMSG_DEC_INIT_ACK. iconic, honestly.
• status — the VPU exeuction result. (that's "execution" spelled the way the kernel spelled it, don't come for me 🙈) so like, did it slay or did it flop.
• ap_inst_addr — the AP vcodec_vpu_inst instance address. that's the AP-side address of the instance, bestie.
• vpu_inst_addr — the VPU decoder instance address. the VPU's own little address. very demure.
• vdec_abi_version — the ABI version of the firmware. the kernel can use this to make sure it's compatible with the firmware 🔥. but heads up — this field is not valid for MT8173 and must not be accessed for that chip. like, do not touch. don't even look at it sideways. 😭
• inst_id — the instance ID. valid only if the ABI version >= 2. so check your version first, bestie, iykyk. ⭐

lowkey the recurring theme here: check your chip, check your ABI version, then access the field. main character energy requires reading the fine print 💅

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🦋 SEE ALSO 🦋

• Kernel file ./drivers/media/platform/mediatek/vcodec/decoder/vdec_ipi_msg.h
• struct vdec_ap_ipi_cmd(9)
• struct vdec_vpu_ipi_ack(9)
• struct vdec_ap_ipi_init(9)
• struct vdec_ap_ipi_dec_start(9)
• struct vdec_ap_ipi_get_param(9)
• struct vdec_vpu_ipi_get_param_ack(9)

that's the whole friend group, go say hi to all of them 🫶🌈

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and that's the page!! 💖 this little cutie comes to you from ./drivers/media/platform/media... — that's the source/version line, mwah — dated October 2026, and the footer wants you to know it's still struct vdec_...ipi_init_ack(9) the whole way through. periodt. 👑✨🎀