STRUCT ADIS_DATA(9)

💖 NAME 💖

okay so bestie, this is struct adis_data from the struct adis_data(9) page in the Kernel API Manual — literally the ADIS chip variant specific data 💅✨. It’s giving “this chip has opinions” energy, and we’re gonna respect every single one of them 🎀.

✨ SYNOPSIS ✨

here’s the whole struct, no edits, no vibes-based renaming, no cap:

       struct adis_data {
           unsigned int read_delay;
           unsigned int write_delay;
           unsigned int cs_change_delay;
           unsigned int glob_cmd_reg;
           unsigned int msc_ctrl_reg;
           unsigned int diag_stat_reg;
           unsigned int diag_stat_size;
           unsigned int prod_id_reg;
           unsigned int prod_id;
           unsigned int self_test_mask;
           unsigned int self_test_reg;
           bool self_test_no_autoclear;
           const struct adis_timeout *timeouts;
           const char * const *status_error_msgs;
           unsigned int status_error_mask;
           int (*enable_irq)(struct adis *adis, bool enable);
           bool unmasked_drdy;
           bool has_paging;
           bool has_fifo;
           unsigned int burst_reg_cmd;
           unsigned int burst_len;
           unsigned int burst_max_len;
           unsigned int burst_max_speed_hz;
        };

🎀 Members 🎀

okay so every member of this iconic struct, one by one — no skips, no “we’ll get to it later” behavior 🙈:

• read_delay — SPI delay for read operations in us.
• write_delay — SPI delay for write operations in us.
• cs_change_delay — SPI delay between CS changes in us.
• glob_cmd_reg — register address of the GLOB_CMD register.
• msc_ctrl_reg — register address of the MSC_CTRL register.
• diag_stat_reg — register address of the DIAG_STAT register.
• diag_stat_size — length (in bytes) of the DIAG_STAT register. If 0 the default length is 2 bytes long.
• prod_id_reg — register address of the PROD_ID register.
• prod_id — product ID code that should be expected when reading prod_id_reg.
• self_test_mask — bitmask of supported self-test operations.
• self_test_reg — register address to request self test command.
• self_test_no_autoclear — True if the device’s self-test needs clear of ctrl reg.
• timeouts — chip specific delays.
• status_error_msgs — array of error messages.
• status_error_mask — bitmask of errors supported by the device.
• enable_irq — hook for ADIS devices that have a special IRQ enable/disable.
• unmasked_drdy — True for devices that cannot mask/unmask the data ready pin.
• has_paging — True if ADIS device has paged registers.
• has_fifo — True if ADIS device has a hardware FIFO.
• burst_reg_cmd — register command that triggers burst.
• burst_len — burst size in the SPI RX buffer. If burst_max_len is defined, this should be the minimum size supported by the device.
• burst_max_len — holds the maximum burst size when the device supports more than one burst mode with different sizes.
• burst_max_speed_hz — maximum spi speed that can be used in burst mode.

🔗 SEE ALSO 🔗

Kernel file ./include/linux/iio/imu/adis.h — and the whole squad is: struct adis_ops(9), struct adis(9), adis_reset(9), __adis_write_reg_8(9), __adis_write_reg_16(9), __adis_write_reg_32(9), __adis_read_reg_16(9), __adis_read_reg_32(9), adis_write_reg(9), adis_read_reg(9), adis_write_reg_8(9), adis_write_reg_16(9), adis_write_reg_32(9), adis_read_reg_16(9), adis_read_reg_32(9), adis_update_bits_base(9), adis_update_bits(9) 🦋.

💌 cute little sign-off: source/version is ./include/linux/iio/imu, date is October 2026, and this page is struct adis_data(9) — mwah, bye bestie 🫶✨