STRUCT MTK_JPEGENC_COMP_DEV(9)

💖 struct mtk_jpegenc_comp_dev(9) 💖

okay so bestie, welcome to the Kernel API Manual, section 9 — this is literally the whole page about struct mtk_jpegenc_comp_dev, and yes it's giving main character energy for the JPEG COREX abstraction. no cap, it's a struct, it's important, let's get into it 🫶

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✨ NAME ✨

struct mtk_jpegenc_comp_dev — JPEG COREX abstraction

like... that's the whole vibe. it abstracts the COREX. iconic. 💅

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🌸 SYNOPSIS 🌸

struct mtk_jpegenc_comp_dev {
    struct device *dev;
    struct platform_device *plat_dev;
    void __iomem *reg_base;
    struct mtk_jpeg_dev *master_dev;
    struct mtk_jpegenc_clk venc_clk;
    int jpegenc_irq;
    struct delayed_work job_timeout_work;
    struct mtk_jpeg_hw_param hw_param;
    enum mtk_jpeg_hw_state hw_state;
    spinlock_t hw_lock;
 };

that's the whole shape of it, copy it exactly bestie, don't be out here renaming fields 😭

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🎀 Members 🎀

okay so every single field, one by one, no skipping, we are NOT summarising the boring parts:

• dev — JPEG device. that's the device pointer, she's the entry point 💖
• plat_dev — platform device data. the platform-device bestie 🌸
• reg_base — JPEG registers mapping. this is the void __iomem * where the registers live, so like… treat it with respect ✨
• master_dev — mtk_jpeg_dev device. the master device, the parent, the one in charge 👑
• venc_clk — jpeg encode clock. clock stuff for the encode side 🕐
• jpegenc_irq — jpeg encode irq num. it's an int, it's the interrupt number, that's the whole gig 🔥
• job_timeout_work — encode timeout workqueue. a struct delayed_work that handles when encoding times out (dramatic, but necessary) ⏰
• hw_param — jpeg encode hw parameters. all the hardware params, bundled 💅
• hw_state — record hw state. an enum mtk_jpeg_hw_state, keeping receipts of where the hw is at 📝
• hw_lock — spinlock protecting the hw device resource. it's a spinlock_t and it protects the hw device resource — respect the lock or perish, fr fr 🔒

lowkey do NOT touch hw_lock-protected stuff without holding hw_lock, the original says it protects the hw device resource and we're taking that literally 💀

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🦋 SEE ALSO 🦋

the whole friend group, literally:

• Kernel file ./drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.h enum mtk_jpeg_ctx_state(9)
• mtk_jpeg_variant(9)
• mtk_jpegenc_clk(9)
• mtk_jpegdec_clk(9)
• mtk_jpegdec_comp_dev(9)
• mtk_jpeg_dev(9)
• mtk_jpeg_fmt(9)
• mtk_jpeg_q_data(9)
• mtk_jpeg_ctx(9)

go read them, iykyk 📚✨

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aaaand that's the page!! mwah 💋 source/version is ./drivers/media/platform/media... and it's dated October 2026, so like, see you in the future bestie 🌈⭐💜 — struct mtk_jpegenc_comp_dev(9) OUT 🎀