STRUCT ISSEI_HW_OPS(9)

✨ struct issei_hw_ops — callbacks for hardware operations ✨

okay bestie, this page lives in the Kernel API Manual and it's literally the blueprint for struct issei_hw_ops. it's the little bundle of function pointers that tells your hardware what to do, and honestly? it's giving "instruction manual for a robot you adopted" 🦋

🌸 SYNOPSIS 🌸

no cap, here's the whole thing, exactly as it is:

struct issei_hw_ops {
    void (*irq_clear)(struct issei_device *idev);
    void (*irq_enable)(struct issei_device *idev);
    void (*irq_disable)(struct issei_device *idev);
    void (*irq_sync)(struct issei_device *idev);
    int (*hw_reset)(struct issei_device *idev, bool enable);
    int (*hw_config)(struct issei_device *idev);
    bool (*hw_is_ready)(struct issei_device *idev);
    void (*hw_reset_release)(struct issei_device *idev);
    void (*host_set_ready)(struct issei_device *idev);
    int (*setup_message_send)(struct issei_device *idev);
    int (*setup_message_recv)(struct issei_device *idev);
    int (*irq_write_generate)(struct issei_device *idev);
};

💅 Members 💅

every single one of these takes a struct issei_device *idev, because obviously, we stan a consistent signature. let's go one by one, no skipping, periodt:

• irq_clear — clear irq 🧹
• irq_enable — enable irq 🟢
• irq_disable — disable irq 🔴
• irq_sync — sync irq 🔄
• hw_reset — initiate hardware reset 💀 (it takes an extra bool enable, main character behavior fr)
• hw_config — initial hardware config 🎀
• hw_is_ready — check if hardware is ready 👀 (returns a bool, so, yes or no bestie)
• hw_reset_release — release hardware from reset 🕊️
• host_set_ready — set host ready indicator 👑
• setup_message_send — send setup message 📤
• setup_message_recv — receive setup message 📥
• irq_write_generate — generate interrupt on write complete ✨

like, that's the whole roster. all twelve. not me counting twice to be sure 🙈

🦋 SEE ALSO 🦋

• Kernel file ./drivers/misc/issei/issei_dev.h struct issei_write_buf(9)
• enum issei_rst_state(9)
• struct issei_device(9)

iykyk, go read those next, they're lowkey essential to the lore 📚

okay that's the page!! it ships from ./drivers/misc/issei and it's dated October 2026 — slay, iconic, no notes 💖🫶✨