cdns_spi_process_fifo(9)

📦 version 7.3.1, in nixpkgs unstable

✨ cdns_spi_process_fifo ✨

okay so bestie, welcome to the Kernel API Manual entry for cdns_spi_process_fifo(9) — yes that's the whole name, it's long, she's worth it, iykyk 🎀

💖 NAME 💖

cdns_spi_process_fifo — fills the TX FIFO, and drain the RX FIFO 🫶

like literally both directions, one function, main character energy fr fr

🌸 SYNOPSIS 🌸

void cdns_spi_process_fifo (struct spi_controller *ctlr , struct
cdns_spi *xspi , int ntx , int nrx );

no cap, that's the whole signature. four things go in, nothing comes out (void, she's mysterious like that ✨)

🦋 ARGUMENTS 🦋

  • ctlr — a pointer to the spi_controller structure 💅 she's the boss of the SPI show
  • xspi — a pointer to the cdns_spi structure 🌈 that's the Cadence-specific lil buddy
  • ntx — how many bytes to pack into the TX FIFO 📤 (that's TX = transmit, you're shoving data in)
  • nrx — how many bytes to drain out of the RX FIFO 📥 (RX = receive, you're scooping data out)

so basically ntx and nrx are your two counters and they don't gotta match, they're independent queens 👑

👑 SEE ALSO 👑

like the whole friend group, go say hi to all of them 💜

ngl bestie, if you're here you're probably deep in spi-cadence.c already — drink some water, the FIFO will still be there 🍓

mwah, that's the page! 💋 this lil gem lives in ./drivers/spi and she was dated October 2026 — see u in the kernel, bestie, slay responsibly 🧚‍♀️⭐

📦 where this page comes from