STRUCT INA3221_DATA(9)

💅 struct ina3221_data(9) 💅

okay bestie, welcome to the Kernel API Manual ✨ — this is the page for struct ina3221_data, which is literally all the device-specific info the INA3221 driver needs to keep track of. it's giving "glorified backpack full of pointers and config bits" and honestly? iconic 🎀

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🌸 NAME 🌸

struct ina3221_data — device specific information 🫶

no cap, that's the whole pitch. per-device info. that's the vibe.

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✨ SYNOPSIS ✨

here's the whole struct, copied exactly because we do not mess with code in this house 💅

struct ina3221_data {
    struct device *pm_dev;
    struct regmap *regmap;
    struct regmap_field *fields[F_MAX_FIELDS];
    struct ina3221_input inputs[INA3221_NUM_CHANNELS];
    u32 reg_config;
    int summation_shunt_resistor;
    u32 summation_channel_control;
    bool single_shot;
 };

look at her. so many fields. main character struct energy 👑

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🦋 Members 🦋

let's do a lil member-by-member vibe check, shall we? every single one gets her moment, because nobody gets left out 😤

• pm_dev — Device pointer for pm runtime. power management's fave little handle 💜
• regmap — Register map of the device. this is the map, the regmap, the whole layout bestie 🗺️
• fields — Register fields of the device. and yes, she's an array: struct regmap_field *fields[F_MAX_FIELDS]; — F_MAX_FIELDS of them, no more no less ✨
• inputs — Array of channel input source specific structures, declared as struct ina3221_input inputs[INA3221_NUM_CHANNELS]; — so INA3221_NUM_CHANNELS of those bad boys 🌈
• reg_config — Register value of INA3221_CONFIG, an u32. literally just the config register's value, chillin' 💅
• summation_shunt_resistor — equivalent shunt resistor value for summation, an int. yes "summation" is a real word here, we stan 🍓
• summation_channel_control — Value written to SCC field in INA3221_MASK_ENABLE, an u32. SCC! MASK_ENABLE! very specific, very slay 🔥
• single_shot — running in single-shot operating mode, a bool. so it's either true or false, no in-between, periodt 💀

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👀 SEE ALSO 👀

go peek at these, iykyk:

• Kernel file ./drivers/hwmon/ina3221.c
• struct ina3221_input(9)

fr fr, read both. they're besties with this struct 🫶

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lowkey important: the array sizes are F_MAX_FIELDS and INA3221_NUM_CHANNELS, and those config bits are INA3221_CONFIG and INA3221_MASK_ENABLE. don't come for me if you mix 'em up, i literally wrote them exactly 💅

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and that's the page! 🌟 this lil number lives in ./drivers/hwmon and it's dated October 2026 — so like, future vibes but make it kernel 🕰️✨ bye bestie, go read some source code 🦋💖