STRUCT MTK_VCODEC_ENC_DEV(9)

💖 struct mtk_vcodec_enc_dev(9) 💖

okay so this is a page from the Kernel API Manual — the struct mtk_vcodec_enc_dev(9) entry, to be exact — and bestie, it's basically the master driver-data bag for the MediaTek vcodec encoder. every single thing the encoder driver needs lives in here. let's get into it 🫶

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✨ NAME ✨

struct mtk_vcodec_enc_dev — driver data

like, that's the whole vibe. it's the driver data struct. main character energy fr fr. 👑

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🌸 SYNOPSIS 🌸

struct mtk_vcodec_enc_dev {
    struct v4l2_device v4l2_dev;
    struct video_device *vfd_enc;
    struct v4l2_m2m_dev *m2m_dev_enc;
    struct platform_device *plat_dev;
    struct list_head ctx_list;
    struct mtk_vcodec_enc_ctx *curr_ctx;
    void __iomem *reg_base[NUM_MAX_VCODEC_REG_BASE];
    const struct mtk_vcodec_enc_pdata *venc_pdata;
    struct mtk_vcodec_fw *fw_handler;
    u64 id_counter;
    struct mutex enc_mutex;
    struct mutex dev_mutex;
    spinlock_t dev_ctx_lock;
    struct workqueue_struct *encode_workqueue;
    int enc_irq;
    spinlock_t irqlock;
    struct mtk_vcodec_pm pm;
    unsigned int enc_capability;
    struct mtk_vcodec_dbgfs dbgfs;
 };

look at that field list. it's giving organized. it's giving "i know what i'm doing." 💅

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🎀 Members 🎀

one by one, no skips, no cap:

• v4l2_dev — the V4L2 device you register video devices for. the official V4L2 plug. 🔌
• vfd_enc — video device for the encoder. this is literally the encoder's video node.
• m2m_dev_enc — m2m device for the encoder. memory-to-memory, obviously. ✨
• plat_dev — platform device. hello platform device, welcome to the struct.
• ctx_list — list of struct mtk_vcodec_ctx. all the contexts, listed. 💜
• curr_ctx — the context that is waiting for codec hardware. yes, that one. it's waiting its turn like a good little context 😭
• reg_base — mapped address of MTK Vcodec registers. it's an array: NUM_MAX_VCODEC_REG_BASE of void __iomem *, lowkey iconic.
• venc_pdata — encoder IC-specific data. per-chip deets, const struct mtk_vcodec_enc_pdata * style. 🍓
• fw_handler — used to communicate with the firmware. the firmware's dedicated little messenger. 🦋
• id_counter — used to identify the current opened instance. a u64, so it can count for, like, forever.
• enc_mutex — encoder hardware lock. touch the hardware without it and you're gonna have a bad time 💀
• dev_mutex — video_device lock. that's the lock, for the video_device. 🎀
• dev_ctx_lock — the lock of the context list. protects ctx_list, literally its whole job.
• encode_workqueue — encode work queue. struct workqueue_struct *, doing the actual work-scheduling thing. 🔥
• enc_irq — h264 encoder irq resource. it's an int, it's the irq, it's for h264. that's the whole sentence.
• irqlock — protect data access by irq handler and work thread. a spinlock_t keeping those two from stepping on each other 🙈
• pm — power management control. a struct mtk_vcodec_pm, handling the power side of life. ⚡
• enc_capability — used to identify encode capability. an unsigned int of pure "what can this thing actually do." 🌈
• dbgfs — debug log related information. a struct mtk_vcodec_dbgfs, for when you need to see what's going on in there. ⭐

ngl bestie, the two spinlocks plus the two mutexes are the whole personality of this struct — everything else is just bookkeeping. protect your data, periodt. 💅

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🌟 SEE ALSO 🌟

go look at these if you want the full cinematic universe:

• Kernel file ./drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc_drv.h
• struct mtk_vcodec_enc_pdata(9)
• struct mtk_enc_params(9)
• struct mtk_vcodec_enc_ctx(9)

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and that's the page!! 💖 this one came out of ./drivers/media/platform/media... dated October 2026, and it's filed under struct mtk_vcodec_enc_dev(9) — so when you see that footer in the wild, you'll know exactly who she is. slay, go read the headers, ily, bye 🧚✨🎀