STRUCT HW_BANK(9)

💖 struct hw_bank(9) — the Kernel API Manual, bestie edition ✨

okay so this one lives in the Kernel API Manual, and it's literally all about struct hw_bank — the hardware register mapping representation. yes it's as cute as it sounds. let's get into it 🫶

✨ NAME ✨

struct hw_bank — the hardware register mapping representation 💅

🎀 SYNOPSIS 🎀

struct hw_bank {
    unsigned lpm;
    resource_size_t phys;
    void __iomem    *abs;
    void __iomem    *cap;
    void __iomem    *op;
    size_t size;
    void __iomem    *regmap[OP_LAST + 1];
 };

🌸 Members 🌸

• lpm — set if the device is LPM capable. that's it, that's the flag 🦋
• phys — the physical address of the controller's registers
• abs — the absolute address of the beginning of the register window
• cap — capability registers
• op — operational registers
• size — the size of the register window
• regmap — register lookup table ✨

🌈 SEE ALSO 🌈

kernel file ./drivers/usb/chipidea/ci.h (iykyk), plus the whole friend group:

• struct ci_hw_ep(9)
• struct ci_role_driver(9)
• struct ci_hdrc(9)
• hw_read_id_reg(9)
• hw_write_id_reg(9)
• hw_read(9)
• hw_write(9)
• hw_test_and_clear(9)
• hw_test_and_write(9)
• ci_otg_is_fsm_mode(9)

ngl, read the whole squad before you go poking at registers 💀

and that's the whole vibe check, bestie — this page dropped out of ./drivers/usb/chipidea in October 2026. go be iconic with it 👑💜