static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
{
int ret, i;
struct mt_device *td;
struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
for (i = 0; mt_classes[i].name ; i++) {
if (id->driver_data == mt_classes[i].name) {
mtclass = &(mt_classes[i]);
break;
}
}
#ifdef MT_DBG
if (trace)
printk(KERN_ERR "hid-multitouch: class=%d\n", mtclass->name);
#endif /* MT_DBG */
/* This allows the driver to correctly support devices
* that emit events over several HID messages.
*/
hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
td = kzalloc(sizeof(struct mt_device), GFP_KERNEL);
if (!td) {
dev_err(&hdev->dev, "cannot allocate multitouch data\n");
return -ENOMEM;
}
td->mtclass = mtclass;
td->inputmode = -1;
hid_set_drvdata(hdev, td);
ret = hid_parse(hdev);
if (ret != 0)
goto fail;
ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
if (ret)
goto fail;
td->slots = kzalloc(td->maxcontacts * sizeof(struct mt_slot),
GFP_KERNEL);
mt_set_input_mode(hdev);
return 0;
fail:
kfree(td);
return ret;
}
static int mt_reset_resume(struct hid_device *hdev)
{
mt_set_input_mode(hdev);
return 0;
}