STRUCT INV_ICM42600_FIFO(9)

💖 struct inv_icm42600_fifo(9) 💖

okay bestie, welcome to the Kernel API Manual, section 9 — this is the page for struct inv_icm42600_fifo, and it's literally the whole vibe-holding container for the FIFO state variables of the inv_icm42600 driver. yes it's as niche as it sounds and yes we're gonna slay it anyway 🎀

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✨ NAME ✨

struct inv_icm42600_fifo — FIFO state variables. that's it, that's the whole name, iconic brevity 💅

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🌸 SYNOPSIS 🌸

here's the struct in all its glory, copy it exactly, don't touch a single character:

struct inv_icm42600_fifo {
    unsigned int on;
    unsigned int en;
    u32 period;
    struct {
      unsigned int gyro;
      unsigned int accel;
      unsigned int eff_gyro;
      unsigned int eff_accel;
      unsigned int value;
    } watermark;
    size_t count;
    struct {
      size_t gyro;
      size_t accel;
      size_t total;
    } nb;
    u8 data[2080];
 };

look at those nested structs. she's structured. she's organized. she ate 🔥

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🦋 Members 🦋

• on — the reference counter for FIFO on. like, how many things are currently keeping the FIFO alive. main character energy for a counter honestly ✨
• en — the bits field of INV_ICM42600_SENSOR_* for the FIFO EN bits. yep, those bits, that field, this member. no cap 🫶
• period — the FIFO internal period. it's a u32, it's a period, it's internal. we love a lowkey simple field 💜
• watermark — the watermark configuration values for accel and gyro. this is the nested struct with gyro, accel, eff_gyro, eff_accel, and value inside — all five, bestie, we're not skipping any 💖
• count — the number of bytes in the FIFO data buffer. it's a size_t, it counts bytes, that's the whole job 🎀
• nb — the gyro, accel and total samples in the FIFO data buffer. another nested struct: gyro, accel, and total. three fields, all present, all accounted for 🌸
• data — the FIFO data buffer, aligned for DMA. it's u8 data[2080], which is 2kB + 32 bytes of read cache. yes, 2080, exactly, don't round it bestie 😭

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💀 SEE ALSO 💀

• Kernel file: ./drivers/iio/imu/inv_icm42600/inv_icm42600_buffer.h — go read it, it's giving "required reading" 🙈

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ngl this whole page is one struct and seven members, but that's the assignment and we did it. periodt. 💅

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and that's a wrap bestie!! 🧚 this little masterpiece comes from ./drivers/iio/imu/inv_icm42600 (that's the source, right there) and it's dated October 2026 — so it's from the future, which honestly explains the aesthetic ⭐ mwah, see you in the next manpage 🌈👑