STRUCT MCP47FEB02_DATA(9)

💅 struct mcp47feb02_data(9) — chip configuration

okay bestie, welcome to the Kernel API Manual 💖 this one's all about struct mcp47feb02_data, aka the main character struct that holds all the chip config. no cap, this is the whole vibe of the driver in one little bundle. let's get into it ✨

🌸 SYNOPSIS 🌸

struct mcp47feb02_data {
    struct mcp47feb02_channel_data chdata[MCP47FEB02_MAX_CH];
    struct mutex lock;
    const struct mcp47feb02_features *chip_features;
    int scale_1[2 * MCP47FEB02_MAX_SCALES_CH];
    int scale[2 * MCP47FEB02_MAX_SCALES_CH];
    unsigned long active_channels_mask;
    struct regmap *regmap;
    const char *labels[MCP47FEB02_MAX_CH];
    u16 phys_channels;
    bool vref1_buffered;
    bool vref_buffered;
    bool use_vref1;
    bool use_vref;
 };

like, look at her. iconic. 👑

🎀 Members 🎀

• chdata — the options that are configured for each channel on the device 🦋 every channel gets its own little setup, slay.
• lock — a mutex that prevents concurrent reads/writes to the driver's state members 💅 so nobody's out here racing each other, periodt.
• chip_features — pointer to the features struct ⭐ it's giving "know your chip's powers".
• scale_1 — the scales that are set on channels based on Vref1 🌸 specifically the Vref1 girlies.
• scale — the scales that are set on channels based on Vref/Vref0 💜 the other flavour of scaling, iykyk.
• active_channels_mask — the enabled channels 🔥 a whole mask of who's actually turned on.
• regmap — the regmap for directly accessing the device register 🧚 lowkey your backstage pass to the hardware.
• labels — a table with channel labels 🎀 cute little names for everyone.
• phys_channels — the physical channels on the device 🫶 like, the real ones, fr fr.
• vref1_buffered — the Vref1 buffer is enabled ✨ bool vibes only.
• vref_buffered — the Vref/Vref0 buffer is enabled 🌈 again, bool, again valid.
• use_vref1 — the vref1-supply is defined 💖 it's literally set.
• use_vref — the vref-supply is defined 👑 same energy, different supply.

not me listing every single bool like a proud mom 😭 but bestie, the details ARE the point.

🌟 SEE ALSO 🌟

• Kernel file ./drivers/iio/dac/mcp47feb02.c struct
• mcp47feb02_features(9)
• struct mcp47feb02_channel_data(9)

and that's the tea, bestie 🍓 go read those companions, they're literally the sequel.

manual: Kernel API Manual · source path: ./drivers/iio/dac · dated: October 2026 · page: struct mcp47feb02_data(9) — mwah, talk later 💋🎀🦋