pdata和isys的联系(二)

static struct  pdata = {
    .subdevs = (struct intel_ipu4_isys_subdev_info *[]) {
        &ov13858_crl_sd,
        ...
    },
};

static void ipu4_quirk(struct pci_dev *pci_dev)
{
    pci_dev->dev.platform_data = &pdata;
}

static int intel_ipu4_pci_probe(struct pci_dev *pdev,
			     const struct pci_device_id *id)
    isp->isys = intel_ipu4_isys_init(
            pdev, &isp->isys_iommu->dev, &isp->isys_iommu->dev,
            isys_base, isys_ipdata,
            pdev->dev.platform_data,	
            0, is_intel_ipu_hw_fpga(isp) ?
            INTEL_IPU4_ISYS_TYPE_INTEL_IPU4_FPGA :
            INTEL_IPU4_ISYS_TYPE_INTEL_IPU4);
        pdata->spdata = spdata;			
        return intel_ipu4_bus_add_device(pdev, parent, pdata, iommu, NULL,
                         INTEL_IPU4_ISYS_NAME, nr);
            adev = kzalloc(sizeof(*adev), GFP_KERNEL);
            adev->pdata = pdata;		
}

static int isys_probe(struct intel_ipu4_bus_device *adev)
{
    isys->pdata = adev->pdata;

    rval = isys_register_devices(isys);
        isys_register_ext_subdevs(isys);
            struct  *spdata = isys->pdata->spdata;	
            for (sd_info = spdata->subdevs; *sd_info; sd_info++)
                isys_register_ext_subdev(isys, *sd_info, false);
            
}