STRUCT MAGICMOUSE_SC(9)

✨ struct magicmouse_sc(9) ✨

okay so bestie, this is a page straight outta the Kernel API Manual — we're talking kernel-level, like, deep internals energy 💅 and it's all about one lil struct. buckle up 🎀

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🌸 NAME 🌸

struct magicmouse_sc — literally just tracks Magic Mouse-specific data. that's the whole vibe. it's the little struct that holds all the deets the driver needs to keep about your fancy mouse 🦋

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💖 SYNOPSIS 💖

struct magicmouse_sc {
    struct input_dev *input;
    unsigned long quirks;
    int ntouches;
    int scroll_accel;
    unsigned long scroll_jiffies;
    struct {
      short x;
      short y;
      short scroll_x;
      short scroll_y;
      short scroll_x_hr;
      short scroll_y_hr;
      u8 size;
      bool scroll_x_active;
      bool scroll_y_active;
    } touches[16];
    int tracking_ids[16];
    struct hid_device *hdev;
    struct delayed_work work;
    struct timer_list battery_timer;
 };

like, look at her. she's got layers 👑 a whole anonymous inner struct, stacked 16 deep, no cap.

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🎀 Members 🎀

• input — the input device we report events through. this is the main character that actually gets your clicks and taps out into the world ✨
• quirks — currently unused 🙈 yes bestie, she's sitting there, doing absolutely nothing, just vibing. (the field stays though, fr fr.)
• ntouches — the number of touches in the most recent touch report. basically "how many fingers, bestie" 💀
• scroll_accel — number of consecutive scroll motions. it's counting how hard you're scrolling 🔥
• scroll_jiffies — the time of the last scroll motion. timestamped. tracked. observed. ⭐
• touches — the most recent data for a touch, indexed by tracking ID. and inside each one you get x, y, scroll_x, scroll_y, scroll_x_hr, scroll_y_hr, size, scroll_x_active and scroll_y_active — like a whole tiny wardrobe of fields, 16 of them, extremely organized 🧚
• tracking_ids — the mapping of current touch input data to touches. it's the group chat roster that tells you which touch is which 🫶
• hdev — pointer to the underlying HID device. the real one. the source. 💜
• work — a workqueue to handle initialization retry for quirky devices. yes, some mice are quirky. iconic of them honestly 🌈
• battery_timer — timer for obtaining battery level information. gotta know when your mouse is running low before it betrays you 😭

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🦋 SEE ALSO 🦋

• Kernel file ./drivers/hid/hid-magicmouse.c — go read the source bestie, iykyk 👑

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ngl this struct is small but she is doing the work. treat her fields with respect 💅

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okay that's the whole page!! brought to you by the ./drivers/hid girlies, dated October 2026 — stay quirky, track those touches, and remember: battery timers are self-care 🍓✨