STRUCT AD9832_STATE(9)

💖 NAME 💖

okay so bestie, this is the manual page for struct ad9832_state(9), straight out of the Kernel API Manual — and it's literally the “driver instance specific data” struct. That's the whole vibe: one driver instance's little state stash. Periodt. ✨

✨ SYNOPSIS ✨

Here's the struct in all its main-character glory — every field, no cap:

struct ad9832_state {
    struct spi_device               *spi;
    struct clk                      *mclk;
    unsigned short                  ctrl_fp;
    unsigned short                  ctrl_ss;
    unsigned short                  ctrl_src;
    struct spi_transfer             xfer;
    struct spi_message              msg;
    struct spi_transfer             freq_xfer[4];
    struct spi_message              freq_msg;
    struct spi_transfer             phase_xfer[2];
    struct spi_message              phase_msg;
    struct mutex                    lock;
    union {
      __be16 freq_data[4];
      __be16 phase_data[2];
      __be16 data;
    };
 };

🫶 Members 🫶

Each member is lowkey doing its own iconic thing:

• spi — a spi_device.
• mclk — external master clock.
• ctrl_fp — cached frequency/phase control word.
• ctrl_ss — cached sync/selsrc control word.
• ctrl_src — cached sleep/reset/clr word.
• xfer — default spi transfer.
• msg — default spi message.
• freq_xfer — tuning word spi transfer.
• freq_msg — tuning word spi message.
• phase_xfer — tuning word spi transfer.
• phase_msg — tuning word spi message.
• lock — protect sensor state.
• {unnamed_union} — anonymous. Yep, that's the man page's own label for it, iykyk. Inside this anonymous union lives:
  • freq_data — tuning word spi transmit buffer.
  • phase_data — tuning word spi transmit buffer.
  • data — spi transmit buffer.

👀 SEE ALSO 👀

• Kernel file ./drivers/staging/iio/frequency/ad9832.c — go read it, bestie, that's the reference. 🦋

that's the whole page, bestie 💅 — source/version: ./drivers/staging/iio/frequency, date: October 2026, page: struct ad9832_state(9). slay and bye 🎀