STRUCT DWC3_EVENT_DEVT(9)

💖 struct dwc3_event_devt — Device Events 💖

okay bestie, so this is a page from the Kernel API Manual — struct dwc3_event_devt(9) — and it's literally the struct that describes a device event in the dwc3 USB driver. it's small, it's bitfield-y, it's iconic. let's get into it 🎀

✨ SYNOPSIS ✨

like, here's the whole shape of it, no cap:

struct dwc3_event_devt {
    u32 one_bit:1;
    u32 device_event:7;
    u32 type:4;
    u32 reserved15_12:4;
    u32 event_info:9;
    u32 reserved31_25:7;
 };

🌸 Members 🌸

• one_bit — this lil one-bit flag says "hey, this is a non-endpoint event." and honestly? it's not used. it's just vibing there. 🙈
• device_event — tells you it's a device event. it should read as 0x00. that's the whole assignment. slay.
• type — the main character 🫶 this is what kind of device event it is. here's the full rundown, bestie, all of them:
  1. 0 — DisconnEvt
  2. 1 — USBRst
  3. 2 — ConnectDone
  4. 3 — ULStChng
  5. 4 — WkUpEvt
  6. 5 — Reserved
  7. 6 — Suspend (EOPF on revisions 2.10a and prior)
  8. 7 — SOF
  9. 8 — Reserved
  10. 9 — ErrticErr
  11. 10 — CmdCmplt
  12. 11 — EvntOverflow
  13. 12 — VndrDevTstRcved
• reserved15_12 — Reserved, not used. it's giving "seat filler." 💀
• event_info — Information about this event. that's the tea ☕ literally what it's for.
• reserved31_25 — Reserved, not used. another reserved one, living its best quiet life. 🌙

🦋 SEE ALSO 🦋

if you wanna go read the source (and you should, iykyk), it's all in the kernel file ./drivers/usb/dwc3/core.h. here's the whole friend group:

• struct dwc3_event_buffer(9)
• struct dwc3_ep(9)
• struct dwc3_trb(9)
• struct dwc3_hwparams(9)
• struct dwc3_request(9)
• struct dwc3_glue_ops(9)
• struct dwc3(9)
• struct dwc3_event_depevt(9)
• struct dwc3_event_gevt(9)
• union dwc3_event(9)
• struct dwc3_gadget_ep_cmd_params(9)
• dwc3_mdwidth(9)

ngl, the reserved fields aren't gonna do anything exciting — don't try to make them fetch, they're not gonna fetch. 💅

okay that's the whole page, bestie, you ate that 🍓 this one's from ./drivers/usb/dwc3, dated October 2026, and it's literally struct dwc3_event_devt(9) — mwah, go read the kernel source, ily 💜✨