STRUCT AD5758_STATE(9)

💅 struct ad5758_state(9) — bestie's guide to the AD5758 driver state ✨

okay so this is a page out of the Kernel API Manual, and it's literally all about struct ad5758_state — the driver-instance-specific data for the AD5758 DAC driver. yes it's a struct, yes it holds all the little vibes the driver needs to function, no we're not skipping anything 🫶

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🌸 NAME 🌸

struct ad5758_state — driver instance specific data 🎀

like, this is the container. every single time the driver spins up an instance, it gets one of these and it holds everything that instance needs to know about itself. main character energy fr fr 👑

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✨ SYNOPSIS ✨

struct ad5758_state {
    struct spi_device *spi;
    struct mutex lock;
    struct gpio_desc *gpio_reset;
    struct ad5758_range out_range;
    unsigned int dc_dc_mode;
    unsigned int dc_dc_ilim;
    unsigned int slew_time;
    bool pwr_down;
    __be32 d32[3];
 };

copy it exactly, bestie, every field, every type, every semicolon. no cap 💀

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🦋 Members 🦋

okay so let's go field by field, and no I'm not skipping a single one:

• spi — the spi_device 💖 this is the SPI device this whole thing is riding on.
• lock — a mutex lock. yeah, the classic. keeps things from stepping on each other's toes 🔒
• gpio_reset — a gpio descriptor for the reset line 🎀 poke it and the thing resets, that's the whole vibe.
• out_range — a struct which stores the output range ⭐ it's an struct ad5758_range, and it's holding the output range info. periodt.
• dc_dc_mode — a variable which stores the mode of operation ✨ yep, the mode of operation lives here.
• dc_dc_ilim — a variable which stores the dc-to-dc converter current limit 🔥 current limit? stored. right here. that's the field.
• slew_time — a variable which stores the target slew time 🦋 target slew time, note that, bestie.
• pwr_down — a variable which contains whether a channel is powered down or not 🌈 it's a bool, so it's giving true/false, powered down or not powered down. that's it.
• d32 — the spi transfer buffers 📦 it's a __be32[3] — three of em, big-endian, ready to fly over the wire.

ngl this is one of those "the name tells you exactly what it is" sections and honestly? we love that for us 🙈

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👀 SEE ALSO 👀

• Kernel file ./drivers/iio/dac/ad5758.c — literally go read the source, it's right there 🧚

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and that's the whole page, bestie 💜 no filler, no fluff, just the struct and its little friends. this one's brought to you by the fine people at ./drivers/iio/dac, October 2026 edition — slay, see you in the next manpage 🎀✨🫶