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, 4 insertions, 3 deletions

diff --git a/include/linux/pci-epc.h b/include/linux/pci-epc.h
index cc2f70d061c8..acc5f96161fe 100644
--- a/include/linux/pci-epc.h
+++ b/include/linux/pci-epc.h
@@ -128,6 +128,8 @@ struct pci_epc_mem {
  * @group: configfs group representing the PCI EPC device
  * @lock: mutex to protect pci_epc ops
  * @function_num_map: bitmap to manage physical function number
+ * @init_complete: flag to indicate whether the EPC initialization is complete
+ *                 or not
  */
 struct pci_epc {
 	struct device			dev;
@@ -143,6 +145,7 @@ struct pci_epc {
 	/* mutex to protect against concurrent access of EP controller */
 	struct mutex			lock;
 	unsigned long			function_num_map;
+	bool				init_complete;
 };
 
 /**
@@ -179,8 +182,6 @@ struct pci_epc_bar_desc {
 /**
  * struct pci_epc_features - features supported by a EPC device per function
  * @linkup_notifier: indicate if the EPC device can notify EPF driver on link up
- * @core_init_notifier: indicate cores that can notify about their availability
- *			for initialization
  * @msi_capable: indicate if the endpoint function has MSI capability
  * @msix_capable: indicate if the endpoint function has MSI-X capability
  * @bar: array specifying the hardware description for each BAR
@@ -188,7 +189,6 @@ struct pci_epc_bar_desc {
  */
 struct pci_epc_features {
 	unsigned int	linkup_notifier : 1;
-	unsigned int	core_init_notifier : 1;
 	unsigned int	msi_capable : 1;
 	unsigned int	msix_capable : 1;
 	struct	pci_epc_bar_desc bar[PCI_STD_NUM_BARS];
@@ -225,6 +225,7 @@ int pci_epc_add_epf(struct pci_epc *epc, struct pci_epf *epf,
 void pci_epc_linkup(struct pci_epc *epc);
 void pci_epc_linkdown(struct pci_epc *epc);
 void pci_epc_init_notify(struct pci_epc *epc);
+void pci_epc_notify_pending_init(struct pci_epc *epc, struct pci_epf *epf);
 void pci_epc_bme_notify(struct pci_epc *epc);
 void pci_epc_remove_epf(struct pci_epc *epc, struct pci_epf *epf,
 			enum pci_epc_interface_type type);