ENUM CDNS_I2C_SLAVE_STATE(9)

🌸 NAME 🌸

enum cdns_i2c_slave_state — bestie, this is the enum that tracks the slave state when I2C is out here operating in slave mode 💅

✨ SYNOPSIS ✨

okay so here's the whole vibe, literally the entire enum, no cap:

enum cdns_i2c_slave_state {
    CDNS_I2C_SLAVE_STATE_IDLE ,
    CDNS_I2C_SLAVE_STATE_SEND ,
    CDNS_I2C_SLAVE_STATE_RECV

};

three constants, that's it, she's simple and iconic for it 🎀

💖 Constants 💖

• CDNS_I2C_SLAVE_STATE_IDLE — the I2C slave is just chilling. idle. not doing anything. main character resting energy 🦋
• CDNS_I2C_SLAVE_STATE_SEND — the I2C slave is sending data to the master. she's the one talking now, periodt 🔥
• CDNS_I2C_SLAVE_STATE_RECV — the I2C slave is receiving data from the master. ears open, taking it all in, lowkey listener mode 🙈

🫶 SEE ALSO 🫶

if you wanna go deeper (iykyk), the kernel file lives here: ./drivers/i2c/busses/i2c-cadence.c — and honestly the whole friend group is worth a look:

• enum cdns_i2c_mode(9)
• struct cdns_i2c(9)
• cdns_i2c_init(9)
• cdns_i2c_runtime_suspend(9)
• cdns_i2c_runtime_resume(9)
• cdns_i2c_clear_bus_hold(9)
• cdns_i2c_slave_isr(9)
• cdns_i2c_master_isr(9)
• cdns_i2c_isr(9)
• cdns_i2c_mrecv(9)
• cdns_i2c_msend(9)
• cdns_i2c_master_reset(9)
• cdns_i2c_master_xfer(9)
• cdns_i2c_master_xfer_atomic(9)
• cdns_i2c_func(9)
• cdns_i2c_calc_divs(9)
• cdns_i2c_setclk(9)
• cdns_i2c_clk_notifier_cb(9)
• cdns_i2c_detect_transfer_size(9)
• cdns_i2c_probe(9)
• cdns_i2c_remove(9)
• cdns_i2c_shutdown(9)

💀 reminder bestie: this is from the Kernel API Manual, sourced out of ./drivers/i2c/busses, dated October 2026, and yes the page title is enum cdns_i2c_slave_state(9) in case you forgot where you were 💖

that's the whole page, slay, go forth and configure your Cadence I2C controller 🌈⭐🍓