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Justin Hammond
82fb0d8d06
Nothing in the controller driver is PCI-specific beyond finding the registers and the interrupt, so an SoC wiring an xHCI controller directly could not use any of it. usbhost_xhci.c is now the driver; usbhost_xhci_pci.c is the PCI attachment, holding the ID table, the BAR mapping and the MSI-X vector. include/nuttx/usb/xhci.h carries what passes between them: the register base, a way to attach the interrupt, and a name to report the controller by, since a system may have more than one. The interrupt belongs to the bus: the bus attaches and detaches it, and the driver never holds an interrupt number. USBHOST_XHCI is the driver and is not selectable on its own; USBHOST_XHCI_PCI selects it. Another bus adds its own symbol beside it. No functional change intended. Assisted-by: Claude:claude-opus-5 Signed-off-by: Justin Hammond <justin@dynam.ac>