diff options
| -rw-r--r-- | qemu-options.hx | 35 |
1 files changed, 29 insertions, 6 deletions
diff --git a/qemu-options.hx b/qemu-options.hx index 622d3bfa5a..fe83ea09b2 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -1705,7 +1705,7 @@ ERST DEFHEADING() -DEFHEADING(USB options:) +DEFHEADING(USB convenience options:) DEF("usb", 0, QEMU_OPTION_usb, "-usb enable on-board USB host controller (if not enabled by default)\n", @@ -1723,9 +1723,31 @@ DEF("usbdevice", HAS_ARG, QEMU_OPTION_usbdevice, QEMU_ARCH_ALL) SRST ``-usbdevice devname`` - Add the USB device devname. Note that this option is deprecated, - please use ``-device usb-...`` instead. See the chapter about + Add the USB device devname, and enable an on-board USB controller + if possible and necessary (just like it can be done via + ``-machine usb=on``). Note that this option is mainly intended for + the user's convenience only. More fine-grained control can be + achieved by selecting a USB host controller (if necessary) and the + desired USB device via the ``-device`` option instead. For example, + instead of using ``-usbdevice mouse`` it is possible to use + ``-device qemu-xhci -device usb-mouse`` to connect the USB mouse + to a USB 3.0 controller instead (at least on machines that support + PCI and do not have an USB controller enabled by default yet). + For more details, see the chapter about :ref:`Connecting USB devices` in the System Emulation Users Guide. + Possible devices for devname are: + + ``braille`` + Braille device. This will use BrlAPI to display the braille + output on a real or fake device (i.e. it also creates a + corresponding ``braille`` chardev automatically beside the + ``usb-braille`` USB device). + + ``ccid`` + Smartcard reader device + + ``keyboard`` + Standard USB keyboard. Will override the PS/2 keyboard (if present). ``mouse`` Virtual Mouse. This will override the PS/2 mouse emulation when @@ -1737,9 +1759,10 @@ SRST position without having to grab the mouse. Also overrides the PS/2 mouse emulation when activated. - ``braille`` - Braille device. This will use BrlAPI to display the braille - output on a real or fake device. + ``wacom-tablet`` + Wacom PenPartner USB tablet. + + ERST DEFHEADING() |