| hw_usb_modules = {} | 
 |  | 
 | # usb subsystem core | 
 | system_ss.add(when: 'CONFIG_USB', if_true: files( | 
 |   'bus.c', | 
 |   'combined-packet.c', | 
 |   'core.c', | 
 |   'desc.c', | 
 |   'desc-msos.c', | 
 |   'libhw.c', | 
 |   'pcap.c', | 
 | )) | 
 |  | 
 | # usb host adapters | 
 | system_ss.add(when: 'CONFIG_USB_UHCI', if_true: files('hcd-uhci.c')) | 
 | system_ss.add(when: 'CONFIG_USB_OHCI', if_true: files('hcd-ohci.c')) | 
 | system_ss.add(when: 'CONFIG_USB_OHCI_PCI', if_true: files('hcd-ohci-pci.c')) | 
 | system_ss.add(when: 'CONFIG_USB_EHCI', if_true: files('hcd-ehci.c')) | 
 | system_ss.add(when: 'CONFIG_USB_EHCI_PCI', if_true: files('hcd-ehci-pci.c')) | 
 | system_ss.add(when: 'CONFIG_USB_EHCI_SYSBUS', if_true: files('hcd-ehci.c', 'hcd-ehci-sysbus.c')) | 
 | system_ss.add(when: 'CONFIG_USB_XHCI', if_true: files('hcd-xhci.c')) | 
 | system_ss.add(when: 'CONFIG_USB_XHCI_PCI', if_true: files('hcd-xhci-pci.c')) | 
 | system_ss.add(when: 'CONFIG_USB_XHCI_SYSBUS', if_true: files('hcd-xhci-sysbus.c')) | 
 | system_ss.add(when: 'CONFIG_USB_XHCI_NEC', if_true: files('hcd-xhci-nec.c')) | 
 | system_ss.add(when: 'CONFIG_USB_MUSB', if_true: files('hcd-musb.c')) | 
 | system_ss.add(when: 'CONFIG_USB_DWC2', if_true: files('hcd-dwc2.c')) | 
 | system_ss.add(when: 'CONFIG_USB_DWC3', if_true: files('hcd-dwc3.c')) | 
 |  | 
 | system_ss.add(when: 'CONFIG_TUSB6010', if_true: files('tusb6010.c')) | 
 | system_ss.add(when: 'CONFIG_IMX', if_true: files('chipidea.c')) | 
 | system_ss.add(when: 'CONFIG_IMX_USBPHY', if_true: files('imx-usb-phy.c')) | 
 | system_ss.add(when: 'CONFIG_VT82C686', if_true: files('vt82c686-uhci-pci.c')) | 
 | system_ss.add(when: 'CONFIG_XLNX_VERSAL', if_true: files('xlnx-versal-usb2-ctrl-regs.c')) | 
 | system_ss.add(when: 'CONFIG_XLNX_USB_SUBSYS', if_true: files('xlnx-usb-subsystem.c')) | 
 |  | 
 | # emulated usb devices | 
 | system_ss.add(when: 'CONFIG_USB', if_true: files('dev-hub.c')) | 
 | system_ss.add(when: 'CONFIG_USB', if_true: files('dev-hid.c')) | 
 | system_ss.add(when: 'CONFIG_USB_TABLET_WACOM', if_true: files('dev-wacom.c')) | 
 | system_ss.add(when: 'CONFIG_USB_STORAGE_CORE', if_true: files('dev-storage.c')) | 
 | system_ss.add(when: 'CONFIG_USB_STORAGE_BOT', if_true: files('dev-storage-bot.c')) | 
 | system_ss.add(when: 'CONFIG_USB_STORAGE_CLASSIC', if_true: files('dev-storage-classic.c')) | 
 | system_ss.add(when: 'CONFIG_USB_STORAGE_UAS', if_true: files('dev-uas.c')) | 
 | system_ss.add(when: 'CONFIG_USB_AUDIO', if_true: files('dev-audio.c')) | 
 | system_ss.add(when: 'CONFIG_USB_SERIAL', if_true: files('dev-serial.c')) | 
 | system_ss.add(when: 'CONFIG_USB_NETWORK', if_true: files('dev-network.c')) | 
 | if host_os != 'windows' | 
 |   system_ss.add(when: 'CONFIG_USB_STORAGE_MTP', if_true: files('dev-mtp.c')) | 
 | endif | 
 |  | 
 | # smartcard | 
 | system_ss.add(when: 'CONFIG_USB_SMARTCARD', if_true: files('dev-smartcard-reader.c')) | 
 |  | 
 | if cacard.found() | 
 |   usbsmartcard_ss = ss.source_set() | 
 |   usbsmartcard_ss.add(when: 'CONFIG_USB_SMARTCARD', | 
 |                       if_true: [cacard, files('ccid-card-emulated.c', 'ccid-card-passthru.c')]) | 
 |   hw_usb_modules += {'smartcard': usbsmartcard_ss} | 
 | endif | 
 |  | 
 | # U2F | 
 | system_ss.add(when: 'CONFIG_USB_U2F', if_true: files('u2f.c')) | 
 | if host_os == 'linux' | 
 |   system_ss.add(when: 'CONFIG_USB_U2F', if_true: [libudev, files('u2f-passthru.c')]) | 
 | endif | 
 | if u2f.found() | 
 |   system_ss.add(when: 'CONFIG_USB_U2F', if_true: [u2f, files('u2f-emulated.c')]) | 
 | endif | 
 |  | 
 | # CanoKey | 
 | if canokey.found() | 
 |   system_ss.add(when: 'CONFIG_USB_CANOKEY', if_true: [canokey, files('canokey.c')]) | 
 | endif | 
 |  | 
 | # usb redirect | 
 | if usbredir.found() | 
 |   usbredir_ss = ss.source_set() | 
 |   usbredir_ss.add(when: 'CONFIG_USB', | 
 |                   if_true: [usbredir, files('redirect.c', 'quirks.c')]) | 
 |   hw_usb_modules += {'redirect': usbredir_ss} | 
 | endif | 
 |  | 
 | # usb pass-through | 
 | if libusb.found() | 
 |   usbhost_ss = ss.source_set() | 
 |   usbhost_ss.add(when: ['CONFIG_USB', libusb], | 
 |                  if_true: files('host-libusb.c')) | 
 |   hw_usb_modules += {'host': usbhost_ss} | 
 | endif | 
 |  | 
 | system_ss.add(when: ['CONFIG_USB', 'CONFIG_XEN_BUS', libusb], if_true: files('xen-usb.c')) | 
 |  | 
 | modules += { 'hw-usb': hw_usb_modules } |