BTN_GRIPR2
[BTN_GRIPL2] = "BtnGripL2", [BTN_GRIPR2] = "BtnGripR2",
input_event(input, EV_KEY, BTN_GRIPR2, !!(b10 & BIT(0)));
input_set_capability(input, EV_KEY, BTN_GRIPR2);
input_report_key(dev, BTN_GRIPR2, data[18] & BIT(1));
input_report_key(dev, BTN_GRIPR2, data[32] & BIT(3));
input_report_key(dev, BTN_GRIPR2, data[18] & BIT(1));
input_report_key(dev, BTN_GRIPR2, data[22] & BIT(1));
BTN_GRIPR, BTN_GRIPR2, /* paddle upper right, lower right */