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virtio-input: add a virtio-mulitouch device

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Add a virtio-multitouch device to the family of devices emulated by
virtio-input implementing the Multi-touch protocol as descripted here:

https://www.kernel.org/doc/html/latest/input/multi-touch-protocol.html?highlight=multi+touch

This patch just add the device itself, without connecting it to any
backends. The following patches will add a PCI-based multitouch device,
some helpers in "ui" and will enable the GTK3 backend to transpose
multi-touch events from the host to the guest.

Signed-off-by: Sergio Lopez <slp@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20230526112925.38794-4-slp@redhat.com>
This commit is contained in:
Sergio Lopez 2023-05-26 13:29:22 +02:00 • committed by Marc-André Lureau
parent 2bfb10dff2
commit 8e9ebd7523
2 changed files with 120 additions and 7 deletions
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9
include/hw/virtio/virtio-input.h
View file

@ -24,10 +24,11 @@ OBJECT_DECLARE_TYPE(VirtIOInput, VirtIOInputClass,
#define VIRTIO_INPUT_GET_PARENT_CLASS(obj) \
OBJECT_GET_PARENT_CLASS(obj, TYPE_VIRTIO_INPUT)
#define TYPE_VIRTIO_INPUT_HID "virtio-input-hid-device"
#define TYPE_VIRTIO_KEYBOARD "virtio-keyboard-device"
#define TYPE_VIRTIO_MOUSE "virtio-mouse-device"
#define TYPE_VIRTIO_TABLET "virtio-tablet-device"
#define TYPE_VIRTIO_INPUT_HID "virtio-input-hid-device"
#define TYPE_VIRTIO_KEYBOARD "virtio-keyboard-device"
#define TYPE_VIRTIO_MOUSE "virtio-mouse-device"
#define TYPE_VIRTIO_TABLET "virtio-tablet-device"
#define TYPE_VIRTIO_MULTITOUCH "virtio-multitouch-device"
OBJECT_DECLARE_SIMPLE_TYPE(VirtIOInputHID, VIRTIO_INPUT_HID)
#define VIRTIO_INPUT_HID_GET_PARENT_CLASS(obj) \