octeon_i2c_write(9)

✨ octeon_i2c_write(9) ✨

okay so bestie, this one lives in the Kernel API Manual — it's a kernel function, so get comfy, we're in driver land now 🫶

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🌸 NAME 🌸

octeon_i2c_write — send data to the bus via low-level controller 💌

like. literally just yeeting your bytes out onto the I2C bus at the lowest level. no cap.

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🦋 SYNOPSIS 🦋

int octeon_i2c_write (struct octeon_i2c *i2c , int target , const u8
*data , int length );

yes she takes four args and returns an int, we love a consistent signature 💅

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🎀 ARGUMENTS 🎀

• i2c — The struct octeon_i2c 🙈 the controller struct itself, the main character of this whole operation
• target — Target address 🎯 like, who are we talking to on the bus
• data — Pointer to the data to be sent ✨ a const u8 *, so bestie, you are not touching these bytes
• length — Length of the data 📏 how many bytes are we actually sending

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💖 DESCRIPTION 💖

okay so here's the vibe: the address is sent over the bus, then the data. that's it. that's the whole bit 🦋

address first, then the payload. iconic order, no notes.

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⭐ RETURN ⭐

0 on success, otherwise a negative errno 💀

so like, check it. zero means slay, negative means something went sideways.

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🌈 SEE ALSO 🌈

Kernel file ./drivers/i2c/busses/i2c-octeon-core.c — and her besties:

• octeon_i2c_wait(9)
• octeon_i2c_hlc_wait(9)
• octeon_i2c_start(9)
• octeon_i2c_read(9)
• octeon_i2c_hlc_block_comp_read(9)
• octeon_i2c_hlc_block_comp_write(9)
• octeon_i2c_xfer(9)

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iykyk, the whole octeon i2c squad is right there in ./drivers/i2c/busses — go say hi 👑

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that's the whole page, bestie!! this one's straight out of the kernel source tree over at ./drivers/i2c/busses, dated October 2026 — mwah, go write some bytes 💜🎀