STRUCT AFE4403_DATA(9)

💖 struct afe4403_data(9) 💖

ok so this is a page from the Kernel API Manual — yes, we're literally in kernel internals rn, bestie, stay with me 🫶

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✨ NAME ✨

struct afe4403_data — the device instance data for the AFE4403. like, the little bag of stuff the driver keeps around for each AFE4403 chip it's babysitting 💅

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🎀 SYNOPSIS 🎀

struct afe4403_data {
    struct spi_device *spi;
    struct regmap *regmap;
    struct regmap_field *fields[F_MAX_FIELDS];
    struct regulator *regulator;
    struct iio_trigger *trig;
    int irq;
    s32 buffer[8];
};

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🌸 Members 🌸

okay pulling these apart one by one, no skipping, we're doing the whole fit check 👑

• spi — the SPI device handle. this is how we even talk to the chip, iconic of it
• regmap — the register map of the device. all the registers, nicely organized ✨
• fields — the register fields of the device. it's an array of struct regmap_field * with F_MAX_FIELDS slots, so like, F_MAX_FIELDS of them, fr fr
• regulator — pointer to the regulator for the IC. the power people 🔌
• trig — the IIO trigger for this device. the thing that says "hey, go" 🌈
• irq — the ADC_RDY line interrupt number. that's the interrupt that fires when the ADC is ready, lowkey important
• buffer — it's an s32 array of 8, and it's used to construct the data layout to push into the IIO buffer. little staging area, main character energy honestly

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🦋 SEE ALSO 🦋

Kernel file ./drivers/iio/health/afe4403.c — go read the source, it's giving ✨ go look at it

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ngl this one's short but it's mighty, don't sleep on it 💀

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ok that's the whole page bestie, we ate and left no crumbs 🍓 this came from ./drivers/iio/health, dated October 2026, in the Kernel API Manual — mwah, periodt 💜🧚