STRUCT IIO_GAIN_SEL_PAIR(9)

💅 struct iio_gain_sel_pair(9) — the kernel API manual, bestie edition

okay so this is the page for struct iio_gain_sel_pair(9), from the Kernel API Manual, and honestly? it's a lil baby struct with a big job. let's get into it ✨

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🌸 NAME 🌸

struct iio_gain_sel_pair — gain - selector values. that's it. that's the whole name. iconic behavior honestly 🎀

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✨ SYNOPSIS ✨

struct iio_gain_sel_pair {
    int gain;
    int sel;
 };

two ints. that's the whole struct. no cap, it's giving minimalist main character energy 🦋

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🫶 Members 🫶

• gain — the gain (multiplication) value, aka how much we're multiplying the signal. gain must be positive, fr fr — negative values are reserved for error handling, so don't come in here with your negative numbers, they're not for you 🙈
• sel — the selector (usually a register value) used to indicate this gain. it's the lil label that says "hey, this gain right here" 💅

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💖 Description 💖

okay so picture this: in many cases, devices like light sensors let you set the signal amplification (gain) using a register interface. so we need a way to keep track of which register value means which gain. that's literally what this structure does — it describes the amplification and the corresponding selector (register value) together, as a matched pair. it's giving matching outfits, it's giving couple goals, it's giving "these two ints belong together" 👑

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🔥 NOTE 🔥

only selectors >= 0 are supported. like, that's the rule. don't test it. the kernel will not be cute about it 💀

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🌈 SEE ALSO 🌈

• Kernel file ./include/linux/iio/iio-gts-helper.h — the home turf, go look at it 🧚
• struct iio_itime_sel_mul(9)
• iio_gts_find_int_time_by_sel(9)
• iio_gts_find_sel_by_int_time(9)
• iio_gts_valid_time(9)
• iio_gts_valid_gain(9)

like the whole gts squad, all linked, all valid, all slay ⭐

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and that's the page!! mwah 💋 this one lives in ./include/linux/iio and it's dated October 2026, so jot that down in your notes app and go read the source bestie, ily, bye 🍓💜