iio_simple_..._event_value(9)

💅 iio_simple_..._event_value(9) — a.k.a. iio_simple_dummy_read_event_value

okay so this is a page straight outta the Kernel API Manual, bestie, and it's literally about one little function: iio_simple_dummy_read_event_value 🎀 it's giving "small function, big responsibility" energy and honestly? iconic.

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✨ NAME ✨

iio_simple_dummy_read_event_value — get the value that's associated with an event 💖

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🌸 SYNOPSIS 🌸

int iio_simple_dummy_read_event_value (struct iio_dev *indio_dev , const
       struct iio_chan_spec *chan , enum iio_event_type type , enum
       iio_event_direction dir , enum iio_event_info info , int *val , int
       *val2 );

like… look at all those params. she's thorough. she's committed. we respect her 🫶

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🦋 ARGUMENTS 🦋

• indio_dev — the device instance specific data. it's the main character's own little world ✨
• chan — the channel for the event whose value is being read. very "which one of you is it" vibes 👀
• type — type of the event whose value is being read. gotta know what kind of event we're dealing with fr fr
• dir — direction of the vent whose value is being read. yes bestie, the original page literally says "vent" 😭 we do not edit, we only observe. she's quirky like that 💀
• info — info type of the event whose value is being read. the vibe check of the value, if you will 🌈
• val — value for the event code. the actual payload, the moment, the star of the show ⭐
• val2 — unused. she's just there for moral support 🙈 no cap, that's her whole job.

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💜 DESCRIPTION 💜

okay so here's the tea 🔥 — many devices provide a large set of events, but only a subset of those can actually be enabled at a time. and the value registers? their meaning changes depending on which event is enabled. it's giving "one register, many faces" energy, highkey chaotic 😭

so what does that mean for the driver? it means the driver has to cache the values associated with each possible event, so that the right value is already in place when the enabled event gets changed. like pre-gaming but for registers. slay ✨

literally don't skip this part, bestie — the caching thing is the whole point of the function 💅

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🧚 SEE ALSO 🧚

• Kernel file ./drivers/iio/dummy/iio_simple_dummy_events.c — go read the source, she ate 💖
• iio_simple_dummy_read_event_config(9)
• iio_simple_dummy_write_event_config(9)
• iio_simple_dummy_write_event_value(9)
• iio_simple_dummy_event_handler(9)
• iio_simple_dummy_events_register(9)
• iio_simple_dummy_events_unregister(9)

the whole friend group, honestly. they come as a set 🫶

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k that's the page!! found in ./drivers/iio/dummy, dated October 2026, and that's the whole manual page bestie — go forth and cache those event values 💅💖🎀