STRUCT MXS_I2C_DEV(9)

💖 struct mxs_i2c_dev(9) 💖

okay bestie, so this is a page from the Kernel API Manual, and it's literally all about struct mxs_i2c_dev — the per-device, private MXS-I2C data. yes, private. it's giving main character energy but for one device only 🎀

✨ SYNOPSIS ✨

here's the whole struct, exactly as it lives, no cap:

struct mxs_i2c_dev {
    struct device *dev;
    enum mxs_i2c_devtype dev_type;
    void __iomem *regs;
    struct completion cmd_complete;
    int cmd_err;
    struct i2c_adapter adapter;
    uint32_t timing0;
    uint32_t timing1;
    uint32_t timing2;
    struct dma_chan                 *dmach;
    uint32_t pio_data[2];
    uint32_t addr_data;
    struct scatterlist              sg_io[2];
    bool dma_read;
 };

like, look at all those fields. she's structured. she's organized. i'm obsessed 💅

🌸 Members 🌸

okay so let's go through every single one, because we do NOT skip members in this house:

• dev — the driver model device node. it's the device's official little ID card 🪪
• dev_type — distinguishes i.MX23/i.MX28 features. iykyk which chip you're on ✨
• regs — IO registers pointer. literally the pointer to where the registers live 💖
• cmd_complete — completion object for transaction wait. it's the "hold on bestie, i'll let you know when it's done" object 🫶
• cmd_err — error code for the last transaction. the receipts for what went wrong last time 😭
• adapter — i2c subsystem adapter node. this is her i2c-subsystem-official era 👑
• timing0 — I2C TIMING0 register value. the timing register, but make it 0 ⏱️
• timing1 — I2C TIMING1 register value. yes, there's a 1, and yes, it also has a value 💜
• timing2 — I2C TIMING2 register value. the third one. the trilogy is complete 🎬
• dmach — DMA channel. the fast lane, channel edition 🔥
• pio_data — PIO data for DMA. data for the DMA, via PIO, don't ask me to explain the crossover episode 🦋
• addr_data — address data for DMA. address info, but for the DMA 🍓
• sg_io — scatterlist for I/O. it's a scatterlist, and it's for I/O, periodt ✨
• dma_read — flag indicating DMA read. a little bool that says "this one's a DMA read" 🎀

ngl every field here is documented in exactly one line and that's the vibe. no extra lore, no invented backstory. we report, we don't speculate 💀

🌈 SEE ALSO 🌈

• Kernel file ./drivers/i2c/busses/i2c-mxs.c — go read the actual source, bestie, that's where the plot happens 📖

and that's the whole page!! mwah 💋

sign-off time: this came from the Kernel API Manual, source path ./drivers/i2c/busses, dated October 2026, and it's filed under struct mxs_i2c_dev(9). stay slay, stay compiled, and may your transactions always complete 💖✨🎀🦋🌸💅🫶👑🌈⭐💜