ROMPTR
dcb = ROMPTR(dev, drm->vbios.data[0x36]);
u8 *i2c = ROMPTR(dev, dcb[2]);
u8 *i2c = ROMPTR(dev, dcb[2]);
u8 *conntab = ROMPTR(dev, dcb[0x14]);
bit->data = ROMPTR(dev, entry[4]);