st_i2c_isr_thread(9)

✨ st_i2c_isr_thread(9) ✨

okay bestie, welcome to the Kernel API Manual entry for st_i2c_isr_thread — yes that's the whole title, yes it's a mouthful, yes we're gonna get through it together 💖

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🌸 NAME 🌸

st_i2c_isr_thread — the interrupt routine, aka the lil thread that wakes up when the hardware's like "hey, something happened!!" 🦋

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⭐ SYNOPSIS ⭐

irqreturn_t st_i2c_isr_thread (int irq , void *data );

that's it. that's the whole shape of it. returns an irqreturn_t, takes two args, iconic behavior honestly 👑

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🎀 ARGUMENTS 🎀

• irq — the interrupt number 💅 this is literally which interrupt we're talking about, no cap
• data — the controller's private data 🫶 the driver's own lil stash of stuff, passed through as a void * so you gotta know what you're casting it back to (iykyk)

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🔥 SEE ALSO 🔥

the kernel file lives at ./drivers/i2c/busses/i2c-st.c, and it's giving main character energy because all of these live there too:

• 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_rd_fill_tx_fifo(9)
• st_i2c_terminate_xfer(9)
• st_i2c_handle_write(9)
• st_i2c_handle_read(9)
• st_i2c_xfer_msg(9)
• st_i2c_xfer(9)

like, the whole friend group is here 🧚✨ go read them, they ate 💀

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ngl bestie, if you're writing or debugging the ST I2C driver, this page is your little starting point — everything else is one SEE ALSO away 🌈

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and that's a wrap, bestie!! 🍓 this page was brought to you by the source at ./drivers/i2c/busses, dated October 2026 — and it's literally titled st_i2c_isr_thread(9) in case you forgot already 💜 mwah, go slay your interrupts ✨🎀