Commit 6c6a0dff authored by Rob Herring's avatar Rob Herring Committed by Lorenzo Pieralisi
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PCI: mobiveil: Use pci_parse_request_of_pci_ranges()



Convert the Mobiveil host bridge to use the common
pci_parse_request_of_pci_ranges().

There's no need to assign the resources to a temporary list first. Just
use bridge->windows directly and remove all the temporary list handling.

Signed-off-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarLorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: default avatarAndrew Murray <andrew.murray@arm.com>
Reviewed-by: default avatarHou Zhiqiang <Zhiqiang.Hou@nxp.com>
Cc: Karthikeyan Mitran <m.karthikeyan@mobiveil.co.in>
Cc: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
parent 8a26f861
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+7 −19
Original line number Diff line number Diff line
@@ -140,7 +140,6 @@ struct mobiveil_msi { /* MSI information */

struct mobiveil_pcie {
	struct platform_device *pdev;
	struct list_head resources;
	void __iomem *config_axi_slave_base;	/* endpoint config base */
	void __iomem *csr_axi_slave_base;	/* root port config base */
	void __iomem *apb_csr_base;	/* MSI register base */
@@ -575,6 +574,7 @@ static void mobiveil_pcie_enable_msi(struct mobiveil_pcie *pcie)

static int mobiveil_host_init(struct mobiveil_pcie *pcie)
{
	struct pci_host_bridge *bridge = pci_host_bridge_from_priv(pcie);
	u32 value, pab_ctrl, type;
	struct resource_entry *win;

@@ -631,7 +631,7 @@ static int mobiveil_host_init(struct mobiveil_pcie *pcie)
	program_ib_windows(pcie, WIN_NUM_0, 0, 0, MEM_WINDOW_TYPE, IB_WIN_SIZE);

	/* Get the I/O and memory ranges from DT */
	resource_list_for_each_entry(win, &pcie->resources) {
	resource_list_for_each_entry(win, &bridge->windows) {
		if (resource_type(win->res) == IORESOURCE_MEM)
			type = MEM_WINDOW_TYPE;
		else if (resource_type(win->res) == IORESOURCE_IO)
@@ -857,7 +857,6 @@ static int mobiveil_pcie_probe(struct platform_device *pdev)
	struct pci_bus *child;
	struct pci_host_bridge *bridge;
	struct device *dev = &pdev->dev;
	resource_size_t iobase;
	int ret;

	/* allocate the PCIe port */
@@ -875,11 +874,8 @@ static int mobiveil_pcie_probe(struct platform_device *pdev)
		return ret;
	}

	INIT_LIST_HEAD(&pcie->resources);

	/* parse the host bridge base addresses from the device tree file */
	ret = devm_of_pci_get_host_bridge_resources(dev, 0, 0xff,
						    &pcie->resources, &iobase);
	ret = pci_parse_request_of_pci_ranges(dev, &bridge->windows, NULL);
	if (ret) {
		dev_err(dev, "Getting bridge resources failed\n");
		return ret;
@@ -892,24 +888,19 @@ static int mobiveil_pcie_probe(struct platform_device *pdev)
	ret = mobiveil_host_init(pcie);
	if (ret) {
		dev_err(dev, "Failed to initialize host\n");
		goto error;
		return ret;
	}

	/* initialize the IRQ domains */
	ret = mobiveil_pcie_init_irq_domain(pcie);
	if (ret) {
		dev_err(dev, "Failed creating IRQ Domain\n");
		goto error;
		return ret;
	}

	irq_set_chained_handler_and_data(pcie->irq, mobiveil_pcie_isr, pcie);

	ret = devm_request_pci_bus_resources(dev, &pcie->resources);
	if (ret)
		goto error;

	/* Initialize bridge */
	list_splice_init(&pcie->resources, &bridge->windows);
	bridge->dev.parent = dev;
	bridge->sysdata = pcie;
	bridge->busnr = pcie->root_bus_nr;
@@ -920,13 +911,13 @@ static int mobiveil_pcie_probe(struct platform_device *pdev)
	ret = mobiveil_bringup_link(pcie);
	if (ret) {
		dev_info(dev, "link bring-up failed\n");
		goto error;
		return ret;
	}

	/* setup the kernel resources for the newly added PCIe root bus */
	ret = pci_scan_root_bus_bridge(bridge);
	if (ret)
		goto error;
		return ret;

	bus = bridge->bus;

@@ -936,9 +927,6 @@ static int mobiveil_pcie_probe(struct platform_device *pdev)
	pci_bus_add_devices(bus);

	return 0;
error:
	pci_free_resource_list(&pcie->resources);
	return ret;
}

static const struct of_device_id mobiveil_pcie_of_match[] = {