REG_EDGE
{ REG_COM16, COM16_AWBGAIN }, { REG_EDGE, 0 },
{ REG_EDGE, 0xa6 }, /* Edge enhancement threshold and factor */
ret = ov965x_read(ov965x, REG_EDGE, &edge);
return ov965x_write(ov965x, REG_EDGE, edge);