diff options
Diffstat (limited to 'drivers/pci/controller/pcie-cadence-host.c')
| -rw-r--r-- | drivers/pci/controller/pcie-cadence-host.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/drivers/pci/controller/pcie-cadence-host.c b/drivers/pci/controller/pcie-cadence-host.c index a4ebbd37b553..ec394f6a19c8 100644 --- a/drivers/pci/controller/pcie-cadence-host.c +++ b/drivers/pci/controller/pcie-cadence-host.c @@ -58,6 +58,11 @@ static void __iomem *cdns_pci_map_bus(struct pci_bus *bus, unsigned int devfn, return pcie->reg_base + (where & 0xfff); } + /* Check that the link is up */ + if (!(cdns_pcie_readl(pcie, CDNS_PCIE_LM_BASE) & 0x1)) + return NULL; + /* Clear AXI link-down status */ + cdns_pcie_writel(pcie, CDNS_PCIE_AT_LINKDOWN, 0x0); /* Update Output registers for AXI region 0. */ addr0 = CDNS_PCIE_AT_OB_REGION_PCI_ADDR0_NBITS(12) | @@ -239,6 +244,7 @@ static int cdns_pcie_host_probe(struct platform_device *pdev) struct cdns_pcie *pcie; struct resource *res; int ret; + int phy_count; bridge = devm_pci_alloc_host_bridge(dev, sizeof(*rc)); if (!bridge) @@ -290,6 +296,13 @@ static int cdns_pcie_host_probe(struct platform_device *pdev) } pcie->mem_res = res; + ret = cdns_pcie_init_phy(dev, pcie); + if (ret) { + dev_err(dev, "failed to init phy\n"); + return ret; + } + platform_set_drvdata(pdev, pcie); + pm_runtime_enable(dev); ret = pm_runtime_get_sync(dev); if (ret < 0) { @@ -322,15 +335,35 @@ static int cdns_pcie_host_probe(struct platform_device *pdev) err_get_sync: pm_runtime_disable(dev); + cdns_pcie_disable_phy(pcie); + phy_count = pcie->phy_count; + while (phy_count--) + device_link_del(pcie->link[phy_count]); return ret; } +static void cdns_pcie_shutdown(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct cdns_pcie *pcie = dev_get_drvdata(dev); + int ret; + + ret = pm_runtime_put_sync(dev); + if (ret < 0) + dev_dbg(dev, "pm_runtime_put_sync failed\n"); + + pm_runtime_disable(dev); + cdns_pcie_disable_phy(pcie); +} + static struct platform_driver cdns_pcie_host_driver = { .driver = { .name = "cdns-pcie-host", .of_match_table = cdns_pcie_host_of_match, + .pm = &cdns_pcie_pm_ops, }, .probe = cdns_pcie_host_probe, + .shutdown = cdns_pcie_shutdown, }; builtin_platform_driver(cdns_pcie_host_driver); |