PCI: Set bridge map_irq and swizzle_irq to default functions

The majority of DT based host drivers use the default .map_irq() and
.swizzle_irq() functions, so let's initialize the function pointers to
the default and drop setting them in the host drivers.

Drivers like iProc which don't support legacy interrupts need to set
.map_irq() back to NULL.

Link: https://lore.kernel.org/r/20200722022514.1283916-20-robh@kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>

drivers/pci/controller/cadence/pcie-cadence-host.c

@@ -231,8 +231,6 @@ int cdns_pcie_host_setup(struct cdns_pcie_rc *rc)
 		goto err_init;
 
 	bridge->ops = &cdns_pcie_host_ops;
-	bridge->map_irq = of_irq_parse_and_map_pci;
-	bridge->swizzle_irq = pci_common_swizzle;
 
 	ret = pci_host_probe(bridge);
 	if (ret < 0)

drivers/pci/controller/dwc/pcie-designware-host.c

@@ -470,8 +470,6 @@ int dw_pcie_host_init(struct pcie_port *pp)
 
 	bridge->sysdata = pp;
 	bridge->ops = &dw_pcie_ops;
-	bridge->map_irq = of_irq_parse_and_map_pci;
-	bridge->swizzle_irq = pci_common_swizzle;
 
 	ret = pci_scan_root_bus_bridge(bridge);
 	if (ret)

drivers/pci/controller/mobiveil/pcie-mobiveil-host.c

@@ -596,8 +596,6 @@ int mobiveil_pcie_host_probe(struct mobiveil_pcie *pcie)
 	/* Initialize bridge */
 	bridge->sysdata = pcie;
 	bridge->ops = &mobiveil_pcie_ops;
-	bridge->map_irq = of_irq_parse_and_map_pci;
-	bridge->swizzle_irq = pci_common_swizzle;
 
 	ret = mobiveil_bringup_link(pcie);
 	if (ret) {

drivers/pci/controller/pci-aardvark.c

@@ -1175,8 +1175,6 @@ static int advk_pcie_probe(struct platform_device *pdev)
 
 	bridge->sysdata = pcie;
 	bridge->ops = &advk_pcie_ops;
-	bridge->map_irq = of_irq_parse_and_map_pci;
-	bridge->swizzle_irq = pci_common_swizzle;
 
 	ret = pci_host_probe(bridge);
 	if (ret < 0) {

drivers/pci/controller/pci-ftpci100.c

@@ -437,8 +437,6 @@ static int faraday_pci_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	host->ops = &faraday_pci_ops;
-	host->map_irq = of_irq_parse_and_map_pci;
-	host->swizzle_irq = pci_common_swizzle;
 	p = pci_host_bridge_priv(host);
 	host->sysdata = p;
 	p->dev = dev;

drivers/pci/controller/pci-host-common.c

@@ -77,8 +77,6 @@ int pci_host_common_probe(struct platform_device *pdev)
 
 	bridge->sysdata = cfg;
 	bridge->ops = (struct pci_ops *)&ops->pci_ops;
-	bridge->map_irq = of_irq_parse_and_map_pci;
-	bridge->swizzle_irq = pci_common_swizzle;
 
 	platform_set_drvdata(pdev, bridge);
 

drivers/pci/controller/pci-mvebu.c

@@ -1118,8 +1118,6 @@ static int mvebu_pcie_probe(struct platform_device *pdev)
 
 	bridge->sysdata = pcie;
 	bridge->ops = &mvebu_pcie_ops;
-	bridge->map_irq = of_irq_parse_and_map_pci;
-	bridge->swizzle_irq = pci_common_swizzle;
 	bridge->align_resource = mvebu_pcie_align_resource;
 	bridge->msi = pcie->msi;
 

drivers/pci/controller/pci-tegra.c

@@ -2707,7 +2707,6 @@ static int tegra_pcie_probe(struct platform_device *pdev)
 
 	host->ops = &tegra_pcie_ops;
 	host->map_irq = tegra_pcie_map_irq;
-	host->swizzle_irq = pci_common_swizzle;
 
 	err = pci_host_probe(host);
 	if (err < 0) {

drivers/pci/controller/pci-v3-semi.c

@@ -722,8 +722,6 @@ static int v3_pci_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	host->ops = &v3_pci_ops;
-	host->map_irq = of_irq_parse_and_map_pci;
-	host->swizzle_irq = pci_common_swizzle;
 	v3 = pci_host_bridge_priv(host);
 	host->sysdata = v3;
 	v3->dev = dev;

drivers/pci/controller/pci-versatile.c

@@ -149,8 +149,6 @@ static int versatile_pci_probe(struct platform_device *pdev)
 	pci_add_flags(PCI_REASSIGN_ALL_BUS);
 
 	bridge->ops = &pci_versatile_ops;
-	bridge->map_irq = of_irq_parse_and_map_pci;
-	bridge->swizzle_irq = pci_common_swizzle;
 
 	return pci_host_probe(bridge);
 }

drivers/pci/controller/pci-xgene.c

@@ -620,8 +620,6 @@ static int xgene_pcie_probe(struct platform_device *pdev)
 
 	bridge->sysdata = port;
 	bridge->ops = &xgene_pcie_ops;
-	bridge->map_irq = of_irq_parse_and_map_pci;
-	bridge->swizzle_irq = pci_common_swizzle;
 
 	return pci_host_probe(bridge);
 }

drivers/pci/controller/pcie-altera.c

@@ -809,8 +809,6 @@ static int altera_pcie_probe(struct platform_device *pdev)
 	bridge->sysdata = pcie;
 	bridge->busnr = pcie->root_bus_nr;
 	bridge->ops = &altera_pcie_ops;
-	bridge->map_irq = of_irq_parse_and_map_pci;
-	bridge->swizzle_irq = pci_common_swizzle;
 
 	return pci_host_probe(bridge);
 }

drivers/pci/controller/pcie-brcmstb.c

@@ -991,8 +991,6 @@ static int brcm_pcie_probe(struct platform_device *pdev)
 
 	bridge->ops = &brcm_pcie_ops;
 	bridge->sysdata = pcie;
-	bridge->map_irq = of_irq_parse_and_map_pci;
-	bridge->swizzle_irq = pci_common_swizzle;
 
 	platform_set_drvdata(pdev, pcie);
 

drivers/pci/controller/pcie-iproc-platform.c

@@ -99,9 +99,10 @@ static int iproc_pcie_pltfm_probe(struct platform_device *pdev)
 	switch (pcie->type) {
 	case IPROC_PCIE_PAXC:
 	case IPROC_PCIE_PAXC_V2:
+		pcie->map_irq = 0;
 		break;
 	default:
-		pcie->map_irq = of_irq_parse_and_map_pci;
+		break;
 	}
 
 	ret = iproc_pcie_setup(pcie, &bridge->windows);

drivers/pci/controller/pcie-iproc.c

@@ -1526,7 +1526,6 @@ int iproc_pcie_setup(struct iproc_pcie *pcie, struct list_head *res)
 	host->ops = &iproc_pcie_ops;
 	host->sysdata = pcie;
 	host->map_irq = pcie->map_irq;
-	host->swizzle_irq = pci_common_swizzle;
 
 	ret = pci_host_probe(host);
 	if (ret < 0) {

drivers/pci/controller/pcie-mediatek.c

@@ -1083,8 +1083,6 @@ static int mtk_pcie_probe(struct platform_device *pdev)
 		return err;
 
 	host->ops = pcie->soc->ops;
-	host->map_irq = of_irq_parse_and_map_pci;
-	host->swizzle_irq = pci_common_swizzle;
 	host->sysdata = pcie;
 
 	err = pci_host_probe(host);

drivers/pci/controller/pcie-rcar-host.c

@@ -294,8 +294,6 @@ static int rcar_pcie_enable(struct rcar_pcie_host *host)
 
 	bridge->sysdata = host;
 	bridge->ops = &rcar_pcie_ops;
-	bridge->map_irq = of_irq_parse_and_map_pci;
-	bridge->swizzle_irq = pci_common_swizzle;
 	if (IS_ENABLED(CONFIG_PCI_MSI))
 		bridge->msi = &host->msi.chip;
 

drivers/pci/controller/pcie-rockchip-host.c

@@ -1001,8 +1001,6 @@ static int rockchip_pcie_probe(struct platform_device *pdev)
 
 	bridge->sysdata = rockchip;
 	bridge->ops = &rockchip_pcie_ops;
-	bridge->map_irq = of_irq_parse_and_map_pci;
-	bridge->swizzle_irq = pci_common_swizzle;
 
 	err = pci_host_probe(bridge);
 	if (err < 0)

drivers/pci/controller/pcie-xilinx-nwl.c

@@ -846,8 +846,6 @@ static int nwl_pcie_probe(struct platform_device *pdev)
 
 	bridge->sysdata = pcie;
 	bridge->ops = &nwl_pcie_ops;
-	bridge->map_irq = of_irq_parse_and_map_pci;
-	bridge->swizzle_irq = pci_common_swizzle;
 
 	if (IS_ENABLED(CONFIG_PCI_MSI)) {
 		err = nwl_pcie_enable_msi(pcie);

drivers/pci/controller/pcie-xilinx.c

@@ -643,8 +643,6 @@ static int xilinx_pcie_probe(struct platform_device *pdev)
 
 	bridge->sysdata = port;
 	bridge->ops = &xilinx_pcie_ops;
-	bridge->map_irq = of_irq_parse_and_map_pci;
-	bridge->swizzle_irq = pci_common_swizzle;
 
 #ifdef CONFIG_PCI_MSI
 	xilinx_pcie_msi_chip.dev = dev;

drivers/pci/of.c

@@ -569,6 +569,9 @@ int devm_of_pci_bridge_init(struct device *dev, struct pci_host_bridge *bridge)
 	if (!dev->of_node)
 		return 0;
 
+	bridge->swizzle_irq = pci_common_swizzle;
+	bridge->map_irq = of_irq_parse_and_map_pci;
+
 	return pci_parse_request_of_pci_ranges(dev, bridge);
 }