i2c_atr_new(9)

💖 i2c_atr_new — all up in the Kernel API Manual, bestie 💖

okay so real talk, this page is i2c_atr_new(9) from the Kernel API Manual, and it's literally the birth certificate for an I2C ATR helper ✨ buckle up 🎀

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🌸 NAME 🌸

i2c_atr_new — allocate and initialize an I2C ATR helper. that's it, that's the vibe 💅

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🦋 SYNOPSIS 🦋

struct i2c_atr * i2c_atr_new (struct i2c_adapter *parent , struct device
*dev , const struct i2c_atr_ops *ops , int max_adapters , u32 flags );

like, copy it exactly, no cap, character for character 🫶

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🎀 ARGUMENTS 🎀

• parent — the parent (upstream) adapter, aka the main character it's attaching to 👑
• dev — the device that's acting as an ATR 🧚
• ops — driver-specific callbacks, your custom lore 📜
• max_adapters — maximum number of child adapters, set your limit bestie 🚦
• flags — flags for ATR, the little switches ⚙️

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💜 DESCRIPTION 💜

so the new ATR helper is connected to the parent adapter, right? but it has no child adapters — it's giving freshly-launched, zero followers energy 😭 if you want kids (adapters, to be clear), you gotta call i2c_atr_add_adapter to add some 🌈

and when you're done with the whole thing? call i2c_atr_delete to remove it. clean up after yourself, we love a responsible icon 💖

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⭐ RETURN ⭐

it hands you back a pointer to the new ATR helper object 🌸 — or ERR_PTR if things went sideways 💀 always check, iykyk.

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🔥 SEE ALSO 🔥

• Kernel file ./include/linux/i2c-atr.h 📂
• enum i2c_atr_flags(9)
• struct i2c_atr_ops(9)
• struct i2c_atr_adap_desc(9)
• i2c_atr_delete(9)
• i2c_atr_add_adapter(9)
• i2c_atr_del_adapter(9)
• i2c_atr_set_driver_data(9)
• i2c_atr_get_driver_data(9)

go read them, they ate 🫶

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okay tiny little send-off: this masterpiece lives in ./include/linux, it's dated October 2026, and it's filed under i2c_atr_new(9) — periodt 💅✨