ov490_write
ret = ov490_write(dev, OV490_PAGE_HIGH_REG, page_high);
ret = ov490_write(dev, OV490_PAGE_LOW_REG, page_low);
ret = ov490_write(dev, (u16)reg, val);
ret = ov490_write(dev, ov490_regs_wizard[i].reg,