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    Subject[PATCHv9 05/12] PCI: mobiveil: Add callback function for interrupt initialization
    Date
    From: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>

    The Mobiveil GPEX internal MSI/INTx controller may not be used
    by other platforms in which the Mobiveil GPEX is integrated.
    This patch is to allow these platforms to implement their
    specific interrupt initialization.

    Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
    ---
    V9:
    - New patch splited from the #1 of V8 patches to make it easy to review.

    drivers/pci/controller/mobiveil/pcie-mobiveil-host.c | 3 +++
    drivers/pci/controller/mobiveil/pcie-mobiveil.h | 7 +++++++
    2 files changed, 10 insertions(+)

    diff --git a/drivers/pci/controller/mobiveil/pcie-mobiveil-host.c b/drivers/pci/controller/mobiveil/pcie-mobiveil-host.c
    index 2cc424e78d33..3cd93df6fe6e 100644
    --- a/drivers/pci/controller/mobiveil/pcie-mobiveil-host.c
    +++ b/drivers/pci/controller/mobiveil/pcie-mobiveil-host.c
    @@ -507,6 +507,9 @@ static int mobiveil_pcie_interrupt_init(struct mobiveil_pcie *pcie)
    struct resource *res;
    int ret;

    + if (rp->ops->interrupt_init)
    + return rp->ops->interrupt_init(pcie);
    +
    /* map MSI config resource */
    res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "apb_csr");
    pcie->apb_csr_base = devm_pci_remap_cfg_resource(dev, res);
    diff --git a/drivers/pci/controller/mobiveil/pcie-mobiveil.h b/drivers/pci/controller/mobiveil/pcie-mobiveil.h
    index e3148078e9dd..18d85806a7fc 100644
    --- a/drivers/pci/controller/mobiveil/pcie-mobiveil.h
    +++ b/drivers/pci/controller/mobiveil/pcie-mobiveil.h
    @@ -130,10 +130,17 @@ struct mobiveil_msi { /* MSI information */
    DECLARE_BITMAP(msi_irq_in_use, PCI_NUM_MSI);
    };

    +struct mobiveil_pcie;
    +
    +struct mobiveil_rp_ops {
    + int (*interrupt_init)(struct mobiveil_pcie *pcie);
    +};
    +
    struct root_port {
    char root_bus_nr;
    void __iomem *config_axi_slave_base; /* endpoint config base */
    struct resource *ob_io_res;
    + struct mobiveil_rp_ops *ops;
    int irq;
    raw_spinlock_t intx_mask_lock;
    struct irq_domain *intx_domain;
    --
    2.17.1
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