STRUCT SPMI_DRIVER(9)

💖 struct spmi_driver(9) 💖

okay so this is from the Kernel API Manual bestie, and it's literally all about struct spmi_driver — the SPMI slave device driver. buckle up, it's short but it's iconic 🎀

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🌸 NAME 🌸

struct spmi_driver — the SPMI slave device driver. that's it, that's the whole vibe 💅

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✨ SYNOPSIS ✨

here's the whole struct, bestie, look at her:

struct spmi_driver {
    struct device_driver driver;
    int (*probe)(struct spmi_device *sdev);
    void (*remove)(struct spmi_device *sdev);
    void (*shutdown)(struct spmi_device *sdev);
 };

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🎀 Members 🎀

• driver — the actual struct device_driver inside. SPMI device drivers should initialize the name and owner field of this structure. don't skip it fr, it's giving "forgot to set owner" energy and nobody wants that 🙈
• probe — this one binds this driver to a SPMI device. signature is int (*probe)(struct spmi_device *sdev), okurrr ✨
• remove — unbinds this driver from the SPMI device. void (*remove)(struct spmi_device *sdev), the breakup arc 💔
• shutdown — shuts down this driver. void (*shutdown)(struct spmi_device *sdev), goodbye bestie 🫶

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💫 Description 💫

so like, if PM runtime support is desired for a slave (yes that's the actual phrasing, PM runtime support, main character energy for real), a device driver can call pm_runtime_put from their probe routine — and then a balancing pm_runtime_get in remove. keep them balanced bestie, it's the law 🔥

PM runtime support for a slave is implemented by issuing a SLEEP command to the slave on runtime_suspend, which transitions the slave into the SLEEP state 😴✨

then on runtime_resume, a WAKEUP command is sent to the slave to bring it back to ACTIVE. wake up babe, new state just dropped ☀️👑

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🦋 SEE ALSO 🦋

• Kernel file ./include/linux/spmi.h
• struct spmi_device(9)
• struct spmi_controller(9)
• spmi_controller_put(9)
• spmi_driver_unregister(9)

go read them, iykyk 📚💜

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and that's the whole page bestie 🧚 lived in ./include/linux, dated October 2026, straight out of the Kernel API Manual — mwah, slay, periodt 💅💖🌟