i2c_smbus_write_word_data(9)

✨ i2c_smbus_write_word_data ✨

okay so this is a page from the Kernel API Manual, and bestie, it's literally about the SMBus "write word" protocol 💅 like that's the whole vibe. let's get into it 🫶

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📖 NAME 📖

i2c_smbus_write_word_data — the SMBus "write word" protocol, no cap ✨

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🎀 SYNOPSIS 🎀

s32 i2c_smbus_write_word_data (const struct i2c_client *client , u8
command , u16 value );

that's the whole signature, copy it exactly, don't come for me 🙈

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💖 ARGUMENTS 💖

• client — handle to the slave device 🦋 like, your little connection to the thing you're talking to
• command — a byte that the slave device interprets 👑 it's giving "here's your instruction, you know what to do"
• value — the 16-bit "word" being written ✨ yes, an actual whole word, 16 bits of it 🌸

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🔥 DESCRIPTION 🔥

so this function executes the SMBus "write word" protocol, periodt 💅 it returns a negative errno if things go sideways 😭 or zero if it slayed successfully ✅ that's it, that's the whole story, iykyk 🧚

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🌈 SEE ALSO 🌈

• kernel file ./drivers/i2c/i2c-core-smbus.c — the source, go read it bestie 📚
• i2c_smbus_pec(9)
• i2c_smbus_read_byte(9)
• i2c_smbus_write_byte(9)
• i2c_smbus_read_byte_data(9)
• i2c_smbus_write_byte_data(9)
• i2c_smbus_read_word_data(9)
• i2c_smbus_read_block_data(9)
• i2c_smbus_write_block_data(9)
• i2c_smbus_xfer(9)
• i2c_smbus_read_i2c_block_data_or_emulated(9)
• i2c_new_smbus_alert_device(9)

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

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and that's the page!! this one's living in ./drivers/i2c and it's dated October 2026 🗓️💜 signed off with love, from the kernel API manual to your terminal 💖🎀🦋