DC_BUFLEN
[DC_BUFLEN] = REG_FIELD(ISP176x_DC_BUFLEN, 0, 15),
[DC_BUFLEN] = REG_FIELD(ISP1763_DC_BUFLEN, 0, 15),
len = isp1760_udc_read(udc, DC_BUFLEN);
isp1760_udc_write(udc, DC_BUFLEN, req->packet_size);
isp1760_udc_write(udc, DC_BUFLEN, 2);
count = isp1760_udc_read(udc, DC_BUFLEN);
isp1760_udc_write(udc, DC_BUFLEN, uep->maxpacket);