STRUCT SERDEV_CONTROLLER(9)

✨ struct serdev_controller(9) ✨

okay bestie, so this is a page straight out of the Kernel API Manual and it's literally about struct serdev_controller — the interface to the serdev controller 🎀 ngl it's short but it's iconic, let's get into it.

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🌸 NAME 🌸

struct serdev_controller — interface to the serdev controller. that's the whole vibe, she's the middle-woman between the driver model and your serial hardware 🫶

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🎀 SYNOPSIS 🎀

like, here's exactly what she looks like, no cap, copy it exactly:

struct serdev_controller {
    struct device           dev;
    struct device           *host;
    unsigned int            nr;
    struct serdev_device    *serdev;
    const struct serdev_controller_ops *ops;
 };

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💖 Members 💖

so each of these fields is doing her own little job, let's break it down:

• dev — the driver model representation of the device ✨ this is the struct device that shows up in the device model, she's got main character energy in sysfs.
• host — serial port hardware controller device 🦋 a pointer to the struct device that is the actual serial port hardware controller.
• nr — number identifier for this controller/bus 🔢 an unsigned int, and it's literally the number id for this controller/bus, iykyk.
• serdev — pointer to slave device for this controller 💜 a struct serdev_device *, the slave device hanging off this controller.
• ops — controller operations 🎯 a const struct serdev_controller_ops *, aka the ops, the whole point.

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🦋 SEE ALSO 🦋

if you're gonna stan this struct you have to check her friends, they're all in the kernel file ./include/linux/serdev.h 📁:

• struct serdev_device_ops(9)
• struct serdev_device(9)
• struct serdev_device_driver(9)
• serdev_device_put(9)
• serdev_controller_put(9)
• serdev_device_driver_unregister(9)

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fr fr go read ./include/linux/serdev.h before you touch any of this, she's the source of truth 💀

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and that's the page bestie, we're done 💅 mwah! this one came from ./include/linux, dated October 2026, and yes the title was struct serdev_controller(9) the whole time — slay, go build something 🔥👑