usb_phy_io_read
return usb_phy_io_read(isp->phy, reg);
ret = usb_phy_io_read(phy, ULPI_SCRATCH);
ret = usb_phy_io_read(phy, ULPI_PRODUCT_ID_HIGH - i);
unsigned int flags = usb_phy_io_read(phy, ULPI_IFC_CTRL);
unsigned int flags = usb_phy_io_read(phy, ULPI_OTG_CTRL);