/* Submit asynchronous sleep */
static void async_sleep(unsigned int msec, struct fpi_ssm *ssm)
{
struct fp_img_dev *dev = ssm->priv;
struct fpi_timeout *timeout;
/* Add timeout */
timeout = fpi_timeout_add(msec, async_sleep_cb, ssm);
if (timeout == NULL) {
/* Failed to add timeout */
fp_err("failed to add timeout");
fpi_imgdev_session_error(dev, -ETIME);
fpi_ssm_mark_aborted(ssm, -ETIME);
}
}
static void state_activate(struct fpi_ssm *ssm)
{
struct libusb_transfer *transfer;
struct fp_img_dev *dev = ssm->priv;
struct vfs0050_dev *vfs_dev = dev->priv;
int to_send;
switch (ssm->cur_state) {
case M_ACTIVATE_START:
vfs_dev->activate_offset = 0;
transfer = libusb_alloc_transfer(0);
libusb_fill_bulk_transfer(transfer, dev->udev, EP1_OUT, vfs0050_activate1, 64, state_activate_cb, ssm, BULK_TIMEOUT);
libusb_submit_transfer(transfer);
break;
case M_ACTIVATE_1_STEP2:
transfer = libusb_alloc_transfer(0);
libusb_fill_bulk_transfer(transfer, dev->udev, EP1_OUT, vfs0050_activate1 + 64, 61, state_activate_cb, ssm, BULK_TIMEOUT);
libusb_submit_transfer(transfer);
break;
case M_ACTIVATE_1_SINGLE_READ:
transfer = libusb_alloc_transfer(0);
libusb_fill_bulk_transfer(transfer, dev->udev, EP1_IN, vfs_dev->tmpbuf, 64, state_activate_cb, ssm, BULK_TIMEOUT);
libusb_submit_transfer(transfer);
break;
case M_ACTIVATE_2_SEND:
to_send = sizeof(vfs0050_activate2) - vfs_dev->activate_offset;
to_send = to_send >= 64 ? 64 : to_send;
transfer = libusb_alloc_transfer(0);
libusb_fill_bulk_transfer(transfer, dev->udev, EP1_OUT, vfs0050_activate2 + vfs_dev->activate_offset, to_send, state_activate_cb, ssm, BULK_TIMEOUT);
libusb_submit_transfer(transfer);
break;
case M_ACTIVATE_EP1_DRAIN:
transfer = libusb_alloc_transfer(0);
libusb_fill_bulk_transfer(transfer, dev->udev, EP1_IN, vfs_dev->tmpbuf, 64, state_activate_cb, ssm, BULK_TIMEOUT);
libusb_submit_transfer(transfer);
break;
case M_ACTIVATE_EP3_INT1: //first interrupt, should be 5 x 0x00
transfer = libusb_alloc_transfer(0);
libusb_fill_interrupt_transfer(transfer, dev->udev, EP3_IN, vfs_dev->tmpbuf, 8, state_activate_cb, ssm, INTERRUPT_TIMEOUT1);
libusb_submit_transfer(transfer);
break;
case M_ACTIVATE_AWAIT_FINGER:
//this sets up infinite wait for interrupt. When the interrupt occurs, we're ready to read data on EP2.
if (!vfs_dev->is_active) {
vfs_dev->is_active = 1;
fpi_imgdev_activate_complete(dev, 0); //notify libfprint activation complete.
}
transfer = libusb_alloc_transfer(0);
libusb_fill_interrupt_transfer(transfer, dev->udev, EP3_IN, vfs_dev->tmpbuf, 8, state_activate_cb, ssm, INTERRUPT_TIMEOUT_NONE);
libusb_submit_transfer(transfer);
break;
case M_ACTIVATE_RECEIVE_FINGERPRINT:
if (vfs_dev->scanbuf_idx + 64 >= vfs_dev->scanbuf_sz) {
vfs_dev->scanbuf_sz <<= 1;
vfs_dev->scanbuf = g_realloc(vfs_dev->scanbuf, vfs_dev->scanbuf_sz);
}
transfer = libusb_alloc_transfer(0);
libusb_fill_bulk_transfer(transfer, dev->udev, EP2_IN, vfs_dev->scanbuf + vfs_dev->scanbuf_idx, 64, state_activate_cb, ssm, 500);
libusb_submit_transfer(transfer);
break;
case M_ACTIVATE_POST_RECEIVE:
submit_image(dev);
fpi_imgdev_report_finger_status(dev, FALSE);
vfs_dev->activate_offset = 0;
vfs_dev->scanbuf_idx = 0;
fpi_timeout_add(300, async_sleep_cb, ssm); //wait a bit and see if we're swiping again.
break;
}
}
