STRUCT AFE4404_DATA(9)

🫶 struct afe4404_data(9) — Kernel API Manual, bestie edition 🌸

okay so like, this is a page straight out of the Kernel API Manual, and it's all about one little struct that holds literally everything a driver needs to remember about an AFE4404 chip. think of it as the device's ~emotional support~ data blob ✨

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✨ NAME ✨

struct afe4404_data — the AFE4404 device instance data. that's it, that's the whole vibe. it's the struct where one specific AFE4404 lives its best life 💅

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🎀 SYNOPSIS 🎀

no cap, here's the whole shape of it, character for character:

struct afe4404_data {
    struct regmap *regmap;
    struct regmap_field *fields[F_MAX_FIELDS];
    struct regulator *regulator;
    struct iio_trigger *trig;
    int irq;
    s32 buffer[10];
 };

she's compact, she's iconic, she has six members and honestly? she ate 👑

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🌈 Members 🌈

let's go through every single one, no skipping, we don't do that here 🫶

• regmap — the register map of the device. this is the whole map, the big picture, the GPS of the chip's registers fr fr.
• fields — the register fields of the device. lowkey the more granular bestie to regmap, and it's an array of struct regmap_field * sized F_MAX_FIELDS. iykyk.
• regulator — a pointer to the regulator for the IC. somebody's gotta keep the power situation cute and stable ⚡.
• trig — the IIO trigger for this device. it's the thing that goes "hey, now!" at the right moments 💫.
• irq — the ADC_RDY line interrupt number. literally the number the kernel calls when the ADC says "i'm ready, bestie" 🦋.
• buffer — used to construct a scan to push to the iio buffer. it's a s32 array of 10 slots, and yes, it's doing exactly what it says on the tin 🍓.

okay real talk: this struct is just data storage. it's not doing the work itself, it's holding the handles so the driver can do the work. don't expect it to fix your bugs 💀

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👑 SEE ALSO 👑

• Kernel file ./drivers/iio/health/afe4404.c — the actual code, go read it, she's right there 🧚

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aaaand that's the page!! slay 💖 this little beauty comes to you from ./drivers/iio/health, dated October 2026, and it's the struct afe4404_data(9) page living its truth in the Kernel API Manual. main character energy from start to finish, periodt 🌟