Symbol: HID_UP_CUSTOM
drivers/hid/hid-apple.c
725
if (usage->hid == (HID_UP_CUSTOM | 0x0003) ||
drivers/hid/hid-input.c
1353
case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */
drivers/hid/hid-multitouch.c
1503
(usage->hid & HID_USAGE_PAGE) == HID_UP_CUSTOM) {