Esempi in C++ (Cpp) per exynos_add_pcie_port

Esempio n. 1

File: pci-exynos.c Progetto: acton393/linux

static int __init exynos_pcie_probe(struct platform_device *pdev)
{
	struct device *dev = &pdev->dev;
	struct exynos_pcie *exynos_pcie;
	struct pcie_port *pp;
	struct device_node *np = dev->of_node;
	struct resource *elbi_base;
	struct resource *phy_base;
	struct resource *block_base;
	int ret;

	exynos_pcie = devm_kzalloc(dev, sizeof(*exynos_pcie), GFP_KERNEL);
	if (!exynos_pcie)
		return -ENOMEM;

	pp = &exynos_pcie->pp;
	pp->dev = dev;

	exynos_pcie->reset_gpio = of_get_named_gpio(np, "reset-gpio", 0);

	exynos_pcie->clk = devm_clk_get(dev, "pcie");
	if (IS_ERR(exynos_pcie->clk)) {
		dev_err(dev, "Failed to get pcie rc clock\n");
		return PTR_ERR(exynos_pcie->clk);
	}
	ret = clk_prepare_enable(exynos_pcie->clk);
	if (ret)
		return ret;

	exynos_pcie->bus_clk = devm_clk_get(dev, "pcie_bus");
	if (IS_ERR(exynos_pcie->bus_clk)) {
		dev_err(dev, "Failed to get pcie bus clock\n");
		ret = PTR_ERR(exynos_pcie->bus_clk);
		goto fail_clk;
	}
	ret = clk_prepare_enable(exynos_pcie->bus_clk);
	if (ret)
		goto fail_clk;

	elbi_base = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	exynos_pcie->elbi_base = devm_ioremap_resource(dev, elbi_base);
	if (IS_ERR(exynos_pcie->elbi_base)) {
		ret = PTR_ERR(exynos_pcie->elbi_base);
		goto fail_bus_clk;
	}

	phy_base = platform_get_resource(pdev, IORESOURCE_MEM, 1);
	exynos_pcie->phy_base = devm_ioremap_resource(dev, phy_base);
	if (IS_ERR(exynos_pcie->phy_base)) {
		ret = PTR_ERR(exynos_pcie->phy_base);
		goto fail_bus_clk;
	}

	block_base = platform_get_resource(pdev, IORESOURCE_MEM, 2);
	exynos_pcie->block_base = devm_ioremap_resource(dev, block_base);
	if (IS_ERR(exynos_pcie->block_base)) {
		ret = PTR_ERR(exynos_pcie->block_base);
		goto fail_bus_clk;
	}

	ret = exynos_add_pcie_port(exynos_pcie, pdev);
	if (ret < 0)
		goto fail_bus_clk;

	platform_set_drvdata(pdev, exynos_pcie);
	return 0;

fail_bus_clk:
	clk_disable_unprepare(exynos_pcie->bus_clk);
fail_clk:
	clk_disable_unprepare(exynos_pcie->clk);
	return ret;
}

Esempio n. 2

File: pci-exynos.c Progetto: ReneNyffenegger/linux

static int __init exynos_pcie_probe(struct platform_device *pdev)
{
	struct device *dev = &pdev->dev;
	struct dw_pcie *pci;
	struct exynos_pcie *ep;
	struct device_node *np = dev->of_node;
	int ret;

	ep = devm_kzalloc(dev, sizeof(*ep), GFP_KERNEL);
	if (!ep)
		return -ENOMEM;

	pci = devm_kzalloc(dev, sizeof(*pci), GFP_KERNEL);
	if (!pci)
		return -ENOMEM;

	pci->dev = dev;
	pci->ops = &dw_pcie_ops;

	ep->pci = pci;
	ep->ops = (const struct exynos_pcie_ops *)
		of_device_get_match_data(dev);

	ep->reset_gpio = of_get_named_gpio(np, "reset-gpio", 0);

	ep->phy = devm_of_phy_get(dev, np, NULL);
	if (IS_ERR(ep->phy)) {
		if (PTR_ERR(ep->phy) == -EPROBE_DEFER)
			return PTR_ERR(ep->phy);

		ep->phy = NULL;
	}

	if (ep->ops && ep->ops->get_mem_resources) {
		ret = ep->ops->get_mem_resources(pdev, ep);
		if (ret)
			return ret;
	}

	if (ep->ops && ep->ops->get_clk_resources &&
			ep->ops->init_clk_resources) {
		ret = ep->ops->get_clk_resources(ep);
		if (ret)
			return ret;
		ret = ep->ops->init_clk_resources(ep);
		if (ret)
			return ret;
	}

	platform_set_drvdata(pdev, ep);

	ret = exynos_add_pcie_port(ep, pdev);
	if (ret < 0)
		goto fail_probe;

	return 0;

fail_probe:
	phy_exit(ep->phy);

	if (ep->ops && ep->ops->deinit_clk_resources)
		ep->ops->deinit_clk_resources(ep);
	return ret;
}