STRUCT THC_DEVICE(9)

💖 struct thc_device(9) 💖

hey bestie, welcome to this page from the Kernel API Manual — it's all about struct thc_device, the THC private device struct. no cap, this is the group-chat rundown of every field. 💅

✨ NAME ✨

struct thc_device — THC private device struct. that's the whole name section, short and iconic. 🎀

🦋 SYNOPSIS 🦋

okay so here's the struct in all its glory — copy it exactly, bestie, no edits:

struct thc_device {
    struct device *dev;
    struct regmap *thc_regmap;
    void __iomem *mmio_addr;
    struct mutex thc_bus_lock;
    enum thc_port_type port_type;
    bool pio_int_supported;
    struct thc_dma_context *dma_ctx;
    struct thc_wot wot;
    wait_queue_head_t write_complete_wait;
    wait_queue_head_t swdma_complete_wait;
    bool write_done;
    bool swdma_done;
    u32 perf_limit;
    u32 *i2c_subip_regs;
    u32 i2c_max_rx_size;
    u32 i2c_int_delay_us;
    bool i2c_max_rx_size_en;
    bool i2c_int_delay_en;
};

tiny aside: dev is in the struct, but the original Members list below doesn't describe it — so I'm not inventing lore. 🙈

👯 Members 👯

• thc_regmap — the MMIO regmap structure for accessing THC registers ✨
• mmio_addr — the MMIO registers address, i.e. where those registers live.
• thc_bus_lock — mutex locker for THC config; it's giving bouncer-at-the-config-club energy 💅
• port_type — the port type of this THC port instance.
• pio_int_supported — flag saying PIO interrupts are supported. 🫶
• dma_ctx — DMA-specific data.
• wot — THC Wake-on-Touch data.
• write_complete_wait — signal event for DMA write complete.
• swdma_complete_wait — signal event for SWDMA sequence complete.
• write_done — bool value that says whether the DMA write is done.
• swdma_done — bool value that says whether the SWDMA sequence is done.
• perf_limit — the delay between a read operation and a write operation.
• i2c_subip_regs — the copy of THC I2C sub-system registers for resuming restore.
• i2c_max_rx_size — I2C Rx transfer max input size.
• i2c_int_delay_us — I2C input interrupt delay; the unit is us.
• i2c_max_rx_size_en — bool value that indicates whether I2C max input size control is enabled or not.
• i2c_int_delay_en — bool value that indicates whether I2C input interrupt delay is enabled or not.

🔥 SEE ALSO 🔥

• Kernel file ./drivers/hid/intel-thc-hid/intel-thc/intel-thc-dev.h 👀
• struct thc_i2c_config(9)

xoxo, your kernel bestie 💖 — source/version: ./drivers/hid/intel-thc-hid/in...; dated October 2026. periodt.