On Thu, Sep 22, 2022 at 05:06:42PM +0900, Yoshihiro Shimoda wrote:
> Some PCIe endpoint controllers need vendor-specific initialization
> before the common code initialization. Add a new callback function
> ep_pre_init() for it.
>
Why can't you call the code associated with ep_pre_init() before calling
dw_pcie_ep_init() in probe?
Thanks,
Mani
> Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx>
> ---
> drivers/pci/controller/dwc/pcie-designware-ep.c | 3 +++
> drivers/pci/controller/dwc/pcie-designware.h | 1 +
> 2 files changed, 4 insertions(+)
>
> diff --git a/drivers/pci/controller/dwc/pcie-designware-ep.c b/drivers/pci/controller/dwc/pcie-designware-ep.c
> index ca8f1804ee10..1b7e9e1b8d52 100644
> --- a/drivers/pci/controller/dwc/pcie-designware-ep.c
> +++ b/drivers/pci/controller/dwc/pcie-designware-ep.c
> @@ -709,6 +709,9 @@ int dw_pcie_ep_init(struct dw_pcie_ep *ep)
>
> dw_pcie_version_detect(pci);
>
> + if (ep->ops->ep_pre_init)
> + ep->ops->ep_pre_init(ep);
> +
> dw_pcie_iatu_detect(pci);
>
> ep->ib_window_map = devm_bitmap_zalloc(dev, pci->num_ib_windows,
> diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h
> index b541f653c209..9ed9621a12e4 100644
> --- a/drivers/pci/controller/dwc/pcie-designware.h
> +++ b/drivers/pci/controller/dwc/pcie-designware.h
> @@ -317,6 +317,7 @@ struct dw_pcie_rp {
> };
>
> struct dw_pcie_ep_ops {
> + void (*ep_pre_init)(struct dw_pcie_ep *ep);
> void (*ep_init)(struct dw_pcie_ep *ep);
> int (*raise_irq)(struct dw_pcie_ep *ep, u8 func_no,
> enum pci_epc_irq_type type, u16 interrupt_num);
> --
> 2.25.1
>
--
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