diff options
Diffstat (limited to 'drivers/pci/host/pcie-iproc.c')
| -rw-r--r-- | drivers/pci/host/pcie-iproc.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/pci/host/pcie-iproc.c b/drivers/pci/host/pcie-iproc.c index 0e11f85ba7b0..5816bceddb65 100644 --- a/drivers/pci/host/pcie-iproc.c +++ b/drivers/pci/host/pcie-iproc.c @@ -440,6 +440,26 @@ static int iproc_pcie_map_ranges(struct iproc_pcie *pcie, return 0; } +static int iproc_pcie_msi_enable(struct iproc_pcie *pcie) +{ + struct device_node *msi_node; + + msi_node = of_parse_phandle(pcie->dev->of_node, "msi-parent", 0); + if (!msi_node) + return -ENODEV; + + /* + * If another MSI controller is being used, the call below should fail + * but that is okay + */ + return iproc_msi_init(pcie, msi_node); +} + +static void iproc_pcie_msi_disable(struct iproc_pcie *pcie) +{ + iproc_msi_exit(pcie); +} + int iproc_pcie_setup(struct iproc_pcie *pcie, struct list_head *res) { int ret; @@ -507,6 +527,10 @@ int iproc_pcie_setup(struct iproc_pcie *pcie, struct list_head *res) iproc_pcie_enable(pcie); + if (IS_ENABLED(CONFIG_PCI_MSI)) + if (iproc_pcie_msi_enable(pcie)) + dev_info(pcie->dev, "not using iProc MSI\n"); + pci_scan_child_bus(bus); pci_assign_unassigned_bus_resources(bus); pci_fixup_irqs(pci_common_swizzle, pcie->map_irq); @@ -531,6 +555,8 @@ int iproc_pcie_remove(struct iproc_pcie *pcie) pci_stop_root_bus(pcie->root_bus); pci_remove_root_bus(pcie->root_bus); + iproc_pcie_msi_disable(pcie); + phy_power_off(pcie->phy); phy_exit(pcie->phy); |