Merge branch 'pci/controller/dwc'

- Move DBI accesses from dw_pcie_ep_init() to dw_pcie_ep_init_complete() so
  drivers for endpoints that require Refclk for DBI access, e.g., qcom and
  tegra194, can control when this happens (Manivannan Sadhasivam)

- Add endpoint API kernel-doc (Manivannan Sadhasivam)

- Remove .deinit() callback and instead call rcar_gen4_pcie_ep_deinit()
  explicitly from rcar-gen4, which was the only user (Manivannan
  Sadhasivam)

- Rename dw_pcie_ep_exit() to dw_pcie_ep_deinit() to correspond with
  dw_pcie_ep_init() (Manivannan Sadhasivam)

- Add dw_pcie_ep_cleanup() for drivers that need to clean up eDMA resources
  when PERST# is asserted, e.g., qcom, tegra194 (Manivannan Sadhasivam)

- Rename dw_pcie_ep_init_complete() to dw_pcie_ep_init_registers() to
  better reflect the functionality (Manivannan Sadhasivam)

- Call dw_pcie_ep_init_registers() directly from drivers instead of from
  dw_pcie_ep_init() so drivers, e.g., qcom and tegra194, can do it when
  Refclk is available (Manivannan Sadhasivam)

- Remove the "core_init_notifier" flag, which previously identified drivers
  that required Refclk before DBI access, because it's now unnecessary
  (Manivannan Sadhasivam)

* pci/controller/dwc:
  PCI: endpoint: Remove "core_init_notifier" flag
  PCI: dwc: ep: Call dw_pcie_ep_init_registers() API directly from all glue drivers
  PCI: dwc: ep: Rename dw_pcie_ep_init_complete() to dw_pcie_ep_init_registers()
  PCI: dwc: ep: Introduce dw_pcie_ep_cleanup() API for drivers supporting PERST#
  PCI: dwc: ep: Rename dw_pcie_ep_exit() to dw_pcie_ep_deinit()
  PCI: dwc: ep: Remove deinit() callback from struct dw_pcie_ep_ops
  PCI: dwc: ep: Add Kernel-doc comments for APIs
  PCI: dwc: ep: Fix DBI access failure for drivers requiring refclk from host

1 files changed, 11 insertions, 0 deletions

diff --git a/drivers/pci/controller/dwc/pcie-designware-plat.c b/drivers/pci/controller/dwc/pcie-designware-plat.c
index 778588b4be70..8490c5d6ff9f 100644
--- a/drivers/pci/controller/dwc/pcie-designware-plat.c
+++ b/drivers/pci/controller/dwc/pcie-designware-plat.c
@@ -145,6 +145,17 @@ static int dw_plat_pcie_probe(struct platform_device *pdev)
 
 		pci->ep.ops = &pcie_ep_ops;
 		ret = dw_pcie_ep_init(&pci->ep);
+		if (ret)
+			return ret;
+
+		ret = dw_pcie_ep_init_registers(&pci->ep);
+		if (ret) {
+			dev_err(dev, "Failed to initialize DWC endpoint registers\n");
+			dw_pcie_ep_deinit(&pci->ep);
+		}
+
+		dw_pcie_ep_init_notify(&pci->ep);
+
 		break;
 	default:
 		dev_err(dev, "INVALID device type %d\n", dw_plat_pcie->mode);