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PCI: cadence-ep: Introduce cdns_pcie_ep_disable() helper for cleanup

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Introduce the helper function cdns_pcie_ep_disable() which will undo the
configuration performed by cdns_pcie_ep_setup(). Also, export it for use
by the existing callers of cdns_pcie_ep_setup(), thereby allowing them
to cleanup on their exit path.

Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://patch.msgid.link/20250417124408.2752248-4-s-vadapalli@ti.com
This commit is contained in:
Siddharth Vadapalli 2025-04-17 18:14:07 +05:30 committed by Bjorn Helgaas
parent 47f25da6c5
commit 3a4b05c9ba
2 changed files with 16 additions and 0 deletions
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11
drivers/pci/controller/cadence/pcie-cadence-ep.c
View File

@ -646,6 +646,17 @@ static const struct pci_epc_ops cdns_pcie_epc_ops = {
.get_features = cdns_pcie_ep_get_features,
};
void cdns_pcie_ep_disable(struct cdns_pcie_ep *ep)
{
struct device *dev = ep->pcie.dev;
struct pci_epc *epc = to_pci_epc(dev);
pci_epc_deinit_notify(epc);
pci_epc_mem_free_addr(epc, ep->irq_phys_addr, ep->irq_cpu_addr,
SZ_128K);
pci_epc_mem_exit(epc);
}
EXPORT_SYMBOL_GPL(cdns_pcie_ep_disable);
int cdns_pcie_ep_setup(struct cdns_pcie_ep *ep)
{

5
drivers/pci/controller/cadence/pcie-cadence.h
View File

@ -544,11 +544,16 @@ static inline void __iomem *cdns_pci_map_bus(struct pci_bus *bus, unsigned int d
#if IS_ENABLED(CONFIG_PCIE_CADENCE_EP)
int cdns_pcie_ep_setup(struct cdns_pcie_ep *ep);
void cdns_pcie_ep_disable(struct cdns_pcie_ep *ep);
#else
static inline int cdns_pcie_ep_setup(struct cdns_pcie_ep *ep)
{
return 0;
}
static inline void cdns_pcie_ep_disable(struct cdns_pcie_ep *ep)
{
}
#endif
void cdns_pcie_detect_quiet_min_delay_set(struct cdns_pcie *pcie);