STRUCT IIO_EVENT_SPEC(9)

💖 NAME 💖

struct iio_event_spec — the spec sheet for a channel event, bestie ✨ (this one lives in the Kernel API Manual, section 9, if you're keeping track 🎀)

🌸 SYNOPSIS 🌸

struct iio_event_spec {
    enum iio_event_type type;
    enum iio_event_direction dir;
    unsigned long mask_separate;
    unsigned long mask_shared_by_type;
    unsigned long mask_shared_by_dir;
    unsigned long mask_shared_by_all;
 };

🦋 Members 🦋

Ok so the struct is literally just six lil fields and every one of them matters, so let's go 👑

• type — the type of the event. That's it, that's the whole job 💅
• dir — the direction of the event. Where it's heading, bestie 🧭
• mask_separate — a bit mask of enum iio_event_info values. Any attributes you set in this mask get registered per channel 🎀 (so like, no sharing, everybody gets their own, main character energy fr)
• mask_shared_by_type — a bit mask of enum iio_event_info values. Attributes you set in this mask get shared by channel type 🌈
• mask_shared_by_dir — a bit mask of enum iio_event_info values. Attributes you set in this mask get shared by channel type and direction 🔥
• mask_shared_by_all — a bit mask of enum iio_event_info values. Attributes you set in this mask get shared by all channels. Everybody, holding hands, one big group chat 🫶

ngl the four masks all say "bit mask of enum iio_event_info values" — that part is NOT a typo, it's just how it is. What changes is who ends up sharing the attributes: nobody (mask_separate), channel type, channel type + direction, or literally all channels. Know the difference, it's giving range 💀

⭐ SEE ALSO ⭐

Kernel file ./include/linux/iio/iio.h — plus the whole extended universe of related pages, and yes we're listing every single one because we don't gatekeep here 🍓

• struct iio_chan_spec_ext_info(9)
• struct iio_enum(9)
• IIO_ENUM(9)
• IIO_ENUM_AVAILABLE(9)
• struct iio_mount_matrix(9)
• IIO_MOUNT_MATRIX(9)
• IIO_SCAN_FORMAT_SIGNED_INT(9)
• IIO_SCAN_FORMAT_UNSIGNED_INT(9)
• IIO_SCAN_FORMAT_FLOAT(9)
• struct iio_scan_type(9)
• struct iio_chan_spec(9)
• iio_channel_has_info(9)
• iio_channel_has_available(9)
• struct iio_info(9)
• struct iio_buffer_setup_ops(9)
• struct iio_dev(9)
• iio_device_register(9)
• devm_iio_device_register(9)
• iio_device_claim_direct(9)
• iio_device_release_direct(9)
• iio_device_try_claim_buffer_mode(9)
• iio_device_release_buffer_mode(9)
• IIO_DEV_ACQUIRE_DIRECT_MODE(9)
• IIO_DEV_ACQUIRE_FAILED(9)
• IIO_DEV_GUARD_CURRENT_MODE(9)
• iio_device_put(9)
• dev_to_iio_dev(9)
• iio_device_get(9)
• iio_device_set_parent(9)
• iio_device_set_drvdata(9)
• iio_device_get_drvdata(9)
• IIO_DECLARE_BUFFER_WITH_TS(9)
• IIO_DECLARE_DMA_BUFFER_WITH_TS(9)
• IIO_DECLARE_QUATERNION(9)
• iio_get_debugfs_dentry(9)
• iio_device_suspend_triggering(9)
• iio_device_resume_triggering(9)
• iio_get_current_scan_type(9)
• iio_get_masklength(9)
• iio_for_each_active_channel(9)
• IIO_DEGREE_TO_RAD(9)
• IIO_RAD_TO_DEGREE(9)
• IIO_G_TO_M_S_2(9)
• IIO_M_S_2_TO_G(9)

✨ that's the whole page, you ate it, go forth and register some events ✨

source location: ./include/linux/iio · dated: October 2026 · page: struct iio_event_spec(9) — mwah, ily, see u in the next manpage bestie 💜👑