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[v15,15/22] PCI: dwc: Introduce .ep_pre_init() and .ep_deinit()

Message ID 20230509124156.150200-16-yoshihiro.shimoda.uh@renesas.com (mailing list archive)
State Superseded
Delegated to: Geert Uytterhoeven
Headers show
Series PCI: rcar-gen4: Add R-Car Gen4 PCIe support | expand

Commit Message

Yoshihiro Shimoda May 9, 2023, 12:41 p.m. UTC
Renesas R-Car Gen4 PCIe controllers require vender-specific
initialization before .ep_init(). To use dw->dbi and dw->num-lanes
in the initialization code, introduce .ep_pre_init() into struct
dw_pcie_ep_ops. Also introduce .ep_deinit() to disable the controller
by using vender-specific de-initialization.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
---
 drivers/pci/controller/dwc/pcie-designware-ep.c | 6 ++++++
 drivers/pci/controller/dwc/pcie-designware.h    | 2 ++
 2 files changed, 8 insertions(+)
diff mbox series

Patch

diff --git a/drivers/pci/controller/dwc/pcie-designware-ep.c b/drivers/pci/controller/dwc/pcie-designware-ep.c
index b11370ef22f1..2bcd723a0682 100644
--- a/drivers/pci/controller/dwc/pcie-designware-ep.c
+++ b/drivers/pci/controller/dwc/pcie-designware-ep.c
@@ -664,6 +664,9 @@  void dw_pcie_ep_exit(struct dw_pcie_ep *ep)
 	struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
 	struct pci_epc *epc = ep->epc;
 
+	if (ep->ops->ep_deinit)
+		ep->ops->ep_deinit(ep);
+
 	dw_pcie_edma_remove(pci);
 
 	if (ep->intx_mem)
@@ -777,6 +780,9 @@  int dw_pcie_ep_init(struct dw_pcie_ep *ep)
 	ep->phys_base = res->start;
 	ep->addr_size = resource_size(res);
 
+	if (ep->ops->ep_pre_init)
+		ep->ops->ep_pre_init(ep);
+
 	dw_pcie_version_detect(pci);
 
 	dw_pcie_iatu_detect(pci);
diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h
index 2639206b4c18..c8a0fd97731f 100644
--- a/drivers/pci/controller/dwc/pcie-designware.h
+++ b/drivers/pci/controller/dwc/pcie-designware.h
@@ -336,7 +336,9 @@  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);
+	void	(*ep_deinit)(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);
 	const struct pci_epc_features* (*get_features)(struct dw_pcie_ep *ep);