Here is a list of all files with brief descriptions:

[detail level 1234]

▼ dev
▼ usb
► controller
atmegadci.c
atmegadci.h
avr32dci.c
avr32dci.h
dwc3.c
dwc3.h
dwc_otg.c
dwc_otg.h
dwc_otg_acpi.c
dwc_otg_fdt.c
dwc_otg_fdt.h
dwc_otg_hisi.c
dwc_otgreg.h
ehci.c
ehci.h
ehci_fsl.c
ehci_imx.c
ehci_msm.c
ehci_mv.c
ehci_pci.c
ehcireg.h
generic_ehci.c
generic_ehci.h
generic_ehci_acpi.c
generic_ehci_fdt.c
generic_ohci.c
generic_usb_if.m
generic_xhci.c
generic_xhci.h
generic_xhci_acpi.c
generic_xhci_fdt.c
musb_otg.c
musb_otg.h
musb_otg_allwinner.c
ohci.c
ohci.h
ohci_pci.c
ohcireg.h
uhci.c
uhci.h
uhci_pci.c
uhcireg.h
usb_controller.c
usb_nop_xceiv.c
uss820dci.c
uss820dci.h
xhci.c
xhci.h
xhci_pci.c
xhcireg.h
► gadget
g_audio.c
g_audio.h
g_keyboard.c
g_keyboard.h
g_modem.c
g_modem.h
g_mouse.c
g_mouse.h
► input
atp.c
uep.c
uhid.c
uhid_snes.c
ukbd.c
ums.c
usb_rdesc.h
usbhid.c
wmt.c
wsp.c
► misc
cp2112.c
udbp.c
udbp.h
ugold.c
uled.c
► net
if_aue.c
if_auereg.h
if_axe.c
if_axereg.h
if_axge.c
if_axgereg.h
if_cdce.c
if_cdceem.c
if_cdcereg.h
if_cue.c
if_cuereg.h
if_ipheth.c
if_iphethvar.h
if_kue.c
if_kuefw.h
if_kuereg.h
if_mos.c
if_mosreg.h
if_muge.c
if_mugereg.h
if_rue.c
if_ruereg.h
if_smsc.c
if_smscreg.h
if_udav.c
if_udavreg.h
if_ure.c
if_urereg.h
if_urndis.c
if_urndisreg.h
if_usie.c
if_usievar.h
ruephy.c
ruephyreg.h
uhso.c
usb_ethernet.c
usb_ethernet.h
► quirk
usb_quirk.c
usb_quirk.h
► serial
u3g.c
uark.c
ubsa.c
ubser.c
uchcom.c
ucycom.c
ufoma.c
uftdi.c
uftdi_reg.h
ugensa.c
uipaq.c
ulpt.c
umcs.c
umcs.h
umct.c
umodem.c
umoscom.c
uplcom.c
usb_serial.c
usb_serial.h
uslcom.c
uvisor.c
uvscom.c
► storage
cfumass.c
rio500_usb.h
umass.c
urio.c
ustorage_fs.c
► template
usb_template.c
usb_template.h
usb_template_audio.c
usb_template_cdce.c
usb_template_cdceem.c
usb_template_kbd.c
usb_template_midi.c
usb_template_modem.c
usb_template_mouse.c
usb_template_msc.c
usb_template_mtp.c
usb_template_multi.c
usb_template_phone.c
usb_template_serialnet.c
► video
udl.c
udl.h
► wlan
if_rsu.c
if_rsureg.h
if_rum.c
if_rumfw.h
if_rumreg.h
if_rumvar.h
if_run.c
if_runreg.h
if_runvar.h
if_uath.c
if_uathreg.h
if_uathvar.h
if_upgt.c
if_upgtvar.h
if_ural.c
if_uralreg.h
if_uralvar.h
if_urtw.c
if_urtwreg.h
if_urtwvar.h
if_zyd.c
if_zydfw.h
if_zydreg.h
ufm_ioctl.h
uftdiio.h
uled_ioctl.h
usb.h
usb_bus.h
usb_busdma.c
usb_busdma.h
usb_cdc.h
usb_controller.h
usb_core.c
usb_core.h
usb_debug.c
usb_debug.h
usb_dev.c
usb_dev.h
usb_device.c
usb_device.h
usb_dynamic.c
usb_dynamic.h
usb_endian.h
usb_error.c
usb_fdt_support.c
usb_fdt_support.h
usb_freebsd.h
usb_freebsd_loader.h
usb_generic.c
usb_generic.h
usb_handle_request.c
usb_hid.c
usb_hub.c
usb_hub.h
usb_hub_acpi.c
usb_hub_private.h
usb_if.m
usb_ioctl.h
usb_lookup.c
usb_mbuf.c
usb_mbuf.h
usb_msctest.c
usb_msctest.h
usb_parse.c
usb_pci.h
usb_pf.c
usb_pf.h
usb_process.c
usb_process.h
usb_request.c
usb_request.h
usb_transfer.c
usb_transfer.h
usb_util.c
usb_util.h
usbdi.h
usbdi_util.h
usbhid.h
▼ tools
▼ kerneldoc
subsys