diff options
Diffstat (limited to 'freebsd/sys/dev/usb/input/uhid.c')
| -rw-r--r-- | freebsd/sys/dev/usb/input/uhid.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/freebsd/sys/dev/usb/input/uhid.c b/freebsd/sys/dev/usb/input/uhid.c index 90761ab7..8570f676 100644 --- a/freebsd/sys/dev/usb/input/uhid.c +++ b/freebsd/sys/dev/usb/input/uhid.c @@ -677,6 +677,8 @@ uhid_probe(device_t dev) { struct usb_attach_arg *uaa = device_get_ivars(dev); int error; + void *buf; + uint16_t len; DPRINTFN(11, "\n"); @@ -703,6 +705,25 @@ uhid_probe(device_t dev) !usb_test_quirk(uaa, UQ_UMS_IGNORE)))) return (ENXIO); + /* Check for mandatory multitouch usages to give wmt(4) a chance */ + if (!usb_test_quirk(uaa, UQ_WMT_IGNORE)) { + error = usbd_req_get_hid_desc(uaa->device, NULL, + &buf, &len, M_USBDEV, uaa->info.bIfaceIndex); + /* Let HID decscriptor-less devices to be handled at attach */ + if (!error) { + if (hid_locate(buf, len, + HID_USAGE2(HUP_DIGITIZERS, HUD_CONTACT_MAX), + hid_feature, 0, NULL, NULL, NULL) && + hid_locate(buf, len, + HID_USAGE2(HUP_DIGITIZERS, HUD_CONTACTID), + hid_input, 0, NULL, NULL, NULL)) { + free(buf, M_USBDEV); + return (ENXIO); + } + free(buf, M_USBDEV); + } + } + return (BUS_PROBE_GENERIC); } |