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| author | Chuanjia Liu <chuanjia.liu@mediatek.com> | 2021-08-23 11:27:58 +0800 |
|---|---|---|
| committer | Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2021-08-26 13:49:26 +0100 |
| commit | 77216702c8f6288f948ee230772b4612b835c5d6 (patch) | |
| tree | 53e05995b85f8eddf3a31dc1e2029c2178f36088 /drivers/pci | |
| parent | 436960bb0045854119a61efab20578f55b311a87 (diff) | |
| download | linux-77216702c8f6288f948ee230772b4612b835c5d6.tar.gz linux-77216702c8f6288f948ee230772b4612b835c5d6.tar.bz2 linux-77216702c8f6288f948ee230772b4612b835c5d6.zip | |
PCI: mediatek: Use PCI domain to handle ports detection
Use of_get_pci_domain_nr() to get the pci domain.
If the "linux,pci-domain" property is present, we assume that the PCIe
bridge is an individual bridge, hence we only need to parse one port.
Link: https://lore.kernel.org/r/20210823032800.1660-5-chuanjia.liu@mediatek.com
Signed-off-by: Chuanjia Liu <chuanjia.liu@mediatek.com>
[lorenzo.pieralisi@arm.com: commit log]
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Ryder Lee <ryder.lee@mediatek.com>
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/controller/pcie-mediatek.c | 29 |
1 files changed, 17 insertions, 12 deletions
diff --git a/drivers/pci/controller/pcie-mediatek.c b/drivers/pci/controller/pcie-mediatek.c index 19e35ac62d43..928e0983a900 100644 --- a/drivers/pci/controller/pcie-mediatek.c +++ b/drivers/pci/controller/pcie-mediatek.c @@ -1048,22 +1048,27 @@ static int mtk_pcie_setup(struct mtk_pcie *pcie) struct device *dev = pcie->dev; struct device_node *node = dev->of_node, *child; struct mtk_pcie_port *port, *tmp; - int err; + int err, slot; + + slot = of_get_pci_domain_nr(dev->of_node); + if (slot < 0) { + for_each_available_child_of_node(node, child) { + err = of_pci_get_devfn(child); + if (err < 0) { + dev_err(dev, "failed to get devfn: %d\n", err); + goto error_put_node; + } - for_each_available_child_of_node(node, child) { - int slot; + slot = PCI_SLOT(err); - err = of_pci_get_devfn(child); - if (err < 0) { - dev_err(dev, "failed to parse devfn: %d\n", err); - goto error_put_node; + err = mtk_pcie_parse_port(pcie, child, slot); + if (err) + goto error_put_node; } - - slot = PCI_SLOT(err); - - err = mtk_pcie_parse_port(pcie, child, slot); + } else { + err = mtk_pcie_parse_port(pcie, node, slot); if (err) - goto error_put_node; + return err; } err = mtk_pcie_subsys_powerup(pcie); |