hwa742.line_upd_time = (hdisp + hndp) * 1000000 / (pix_clk / 1000);
hwa742.line_upd_time *= 1000;
if (hdisp * hwa742.pix_tx_time > hwa742.line_upd_time)
hwa742.line_upd_time = (hdisp + hndp) * 1000000 / (pix_clk / 1000);
hwa742.line_upd_time *= 1000;
if (hdisp * hwa742.pix_tx_time > hwa742.line_upd_time)