STRUCT ST_SENSOR_DATA(9)

✨ struct st_sensor_data(9) ✨

okay so bestie, welcome to the Kernel API Manual 💖 this page is all about struct st_sensor_data — the whole vibe check of a status struct for an ST sensor device. it's giving "everything you need to know about what the sensor is doing rn" and honestly? iconic. 🎀

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🌸 NAME 🌸

struct st_sensor_data — literally the ST sensor device status. that's it, that's the whole name. no cap. ✨

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🦋 SYNOPSIS 🦋

here's the whole struct, character for character, because we do not mess with the source of truth:

struct st_sensor_data {
    struct iio_trigger *trig;
    struct iio_mount_matrix mount_matrix;
    struct st_sensor_settings *sensor_settings;
    struct st_sensor_fullscale_avl *current_fullscale;
    struct regmap *regmap;
    bool enabled;
    unsigned int odr;
    unsigned int num_data_channels;
    u8 drdy_int_pin;
    bool int_pin_open_drain;
    int irq;
    bool edge_irq;
    bool hw_irq_trigger;
    s64 hw_timestamp;
    struct mutex odr_lock;
    char buffer_data[ST_SENSORS_MAX_BUFFER_SIZE];
 };

look at her. so structured. so data. 💅

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👑 Members 👑

okay now the part where we meet the cast, one field at a time. main character energy for every single one of them, let's go:

• trig — the trigger in use by the core driver. she's the one calling the shots around here. 🔥
• mount_matrix — the mounting matrix of the sensor. it's literally the sensor's sense of direction, iykyk.
• sensor_settings — pointer to the specific sensor settings in use. like, which sensor are we even talking about? this is how we know. 🧚
• current_fullscale — maximum range of measure by the sensor. the absolute ceiling, the limit, the "this is how much we can take." 💀
• regmap — pointer to specific sensor regmap configuration. register map stuff, lowkey essential.
• enabled — status of the sensor (false->off, true->on). simple as that bestie. 👑
• odr — output data rate of the sensor, in [Hz]. how fast she's going. ⭐
• num_data_channels — number of data channels used in buffer. counting her channels like it's a group chat. 🫶
• drdy_int_pin — redirect DRDY on pin 1 (1) or pin 2 (2). pick your fighter. 🙈
• int_pin_open_drain — set the interrupt/DRDY to open drain. yes ma'am. ✨
• irq — the IRQ number. that's it. that's the field. 🌈
• edge_irq — the IRQ triggers on edges and need special handling. edge case literally. 😭
• hw_irq_trigger — if we're using the hardware interrupt on the sensor. conditional queen. 💜
• hw_timestamp — latest timestamp from the interrupt handler, when in use. when in use!! note it!! 🍓
• odr_lock — local lock for preventing concurrent ODR accesses/changes. no interrupting, we're locking. 🔒 (well, mutex, but you get it.) 💅
• buffer_data — data used by buffer part. the buffer's lil stash. 🌸

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💜 SEE ALSO 💜

go look at these next bestie, they're all family:

• Kernel file ./include/linux/iio/common/st_sensors.h struct st_sensor_bdu(9), struct st_sensor_das(9), struct st_sensor_int_drdy(9), struct st_sensor_data_ready_irq(9), struct st_sensor_settings(9)

fr fr, the related structs are right there in ./include/linux/iio/common. obsessed. 💖

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and that's the whole page bestie!! 🎀 this lil masterpiece comes to you from ./include/linux/iio/common, dated October 2026, and it's titled struct st_sensor_data(9) in case you forgot already — go forth and slay your sensor status, mwah 💅✨