st_i2c_rd_fill_tx_fifo(9)

💅 st_i2c_rd_fill_tx_fifo(9) — like, the Kernel API Manual entry you didn't know you needed 🎀

okay so bestie, welcome to the Kernel API Manual glow-up of st_i2c_rd_fill_tx_fifo. yes it's a real function. yes it's iconic. let's get into it ✨

---

🌸 NAME 🌸

st_i2c_rd_fill_tx_fifo — fills the Tx FIFO when you're in read mode, no cap 🫶

---

✨ SYNOPSIS ✨

void st_i2c_rd_fill_tx_fifo (struct st_i2c_dev *i2c_dev , u32 max );

that's it. that's the whole vibe. two arguments, returns nothing, main character energy only 💅

---

🦋 ARGUMENTS 🦋

• i2c_dev — the controller's private data, aka the little bag of secrets this driver keeps about itself 👜
• max — the maximum amount of data to fill into the Tx FIFO. like, the ceiling. the limit. the "bestie know your boundaries" number 🔥

---

💖 DESCRIPTION 💖

so here's the tea 🍵 — this function fills the Tx FIFO with a fixed pattern when you're in read mode, and the whole point of that is to trigger the clock. that's it. that's the function. it's literally just stuffing a pattern in there to make the clock go tick tick tick ⏰✨

no shade, it's a small job, but somebody's gotta do it and it ate 💀👑

---

🌈 SEE ALSO 🌈

the whole friend group lives in the kernel file ./drivers/i2c/busses/i2c-st.c and honestly the squad is kinda big, so buckle up 🧚:

• struct st_i2c_timings(9)
• struct st_i2c_client(9)
• struct st_i2c_dev(9)
• st_i2c_hw_config(9)
• st_i2c_write_tx_fifo(9)
• st_i2c_wr_fill_tx_fifo(9)
• st_i2c_terminate_xfer(9)
• st_i2c_handle_write(9)
• st_i2c_handle_read(9)
• st_i2c_isr_thread(9)
• st_i2c_xfer_msg(9)
• st_i2c_xfer(9)

iykyk 🌟 go read them, they're all serving in their own way 🫶

---

and that's the whole page, bestie! this little gem was served fresh from ./drivers/i2c/busses and dated October 2026 — yes, the manual itself is st_i2c_rd_fill_tx_fifo(9), we came full circle 🌀. mwah, stay hydrated, and may your FIFOs always be filled 💜💖🎀