rk3x_i2c_setup(9)

✨ rk3x_i2c_setup ✨

Okay bestie, this is the rk3x_i2c_setup page from the Kernel API Manual — let's get into it 💅

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🎀 NAME 🎀

rk3x_i2c_setup — literally the function that sets up I2C registers for an I2C operation described by msgs and num 🫶

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💖 SYNOPSIS 💖

Here's the vibe, no cap:

int rk3x_i2c_setup (struct rk3x_i2c *i2c , struct i2c_msg *msgs , int
       num );

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🌸 ARGUMENTS 🌸

• i2c — the target controller data, like the main character of this operation 👑
• msgs — the I2C msgs you're processing, the whole stack of them
• num — how many msgs there are, the count, the number, the amount 🌈

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🦋 DESCRIPTION 🦋

Heads up bestie: you must have i2c->lock held before you call this. No exceptions, periodt. 🔒

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⭐ RETURN ⭐

Returns the number of I2C msgs processed — or a negative value if something went sideways 😭

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🔥 SEE ALSO 🔥

• Kernel file ./drivers/i2c/busses/i2c-rk3x.c
• struct i2c_spec_values(9)
• struct rk3x_i2c_calced_timings(9)
• struct rk3x_i2c_soc_data(9)
• struct rk3x_i2c(9)
• rk3x_i2c_start(9)
• rk3x_i2c_stop(9)
• rk3x_i2c_prepare_read(9)
• rk3x_i2c_fill_transmit_buf(9)
• rk3x_i2c_get_spec(9)
• rk3x_i2c_v0_calc_timings(9)
• rk3x_i2c_v1_calc_timings(9)
• rk3x_i2c_clk_notifier_cb(9)

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Catch you later! This page came from the ./drivers/i2c/busses section, dated October 2026 — slay! 👑💜