STRUCT RMI_DATA(9)

💖 struct rmi_data(9) — like, the whole vibe 💖

So this page is from the Kernel API Manual — it's struct rmi_data(9), and honestly bestie, it's the little struct that stores information for hid communication. That's it, that's the whole personality. Iconic. 🎀

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✨ NAME ✨

struct rmi_data — stores information for hid communication 🫶

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🌸 SYNOPSIS 🌸

Okay so picture this struct, right? Here's exactly what's inside, verbatim, no cap:

struct rmi_data {
    struct mutex page_mutex;
    int page;
    struct rmi_transport_dev xport;
    wait_queue_head_t wait;
    u8 *writeReport;
    u8 *readReport;
    u32 input_report_size;
    u32 output_report_size;
    unsigned long flags;
    struct work_struct reset_work;
    struct hid_device *hdev;
    unsigned long device_flags;
    struct irq_domain *domain;
    int rmi_irq;
 };

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💅 Members 💅

Okay, member by member, let me introduce you to the whole squad — each one is a main character in their own right:

• page_mutex — locks the current page so nobody goes changing pages in unexpected ways 😤 like, boundaries, bestie, respect them.
• page — keeps track of the current virtual page 📄.
• xport — the transport device that gets registered with the RMI4 core ✨.
• wait — used for waiting for read data ⏳ (the suspense!!).
• writeReport — the output buffer when you're writing RMI registers ✍️.
• readReport — the input buffer when you're reading RMI registers 👀.
• input_report_size — size of an input report (advertised by HID) 📥.
• output_report_size — size of an output report (advertised by HID) 📤.
• flags — flags for the current device (started, reading, etc...) 🚩.
• reset_work — the worker that will be called in case of a mouse report 🐭🔁.
• hdev — pointer to the struct hid_device 👉.
• device_flags — flags which describe the device 🏷️.
• domain — the IRQ domain allocated for this RMI4 device 🧚.
• rmi_irq — the irq that will be used to generate events to rmi-core ⚡.

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🦋 SEE ALSO 🦋

• Kernel file ./drivers/hid/hid-rmi.c
• rmi_set_page(9)

Go read them, iykyk 💜

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lowkey obsessed with how tidy this struct is tbh. anyway ✨

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Bestie, that's the whole page — brought to you by the fine folks at ./drivers/hid, dated October 2026. Slay, periodt, bye! 💖🌈👑