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Commit 141cb3d4 authored by Xiaowei Song's avatar Xiaowei Song Committed by Lorenzo Pieralisi
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PCI: kirin: Add MSI support 



Add support for MSI to the kirin host controller driver, based
on the generic dwc infrastructure.

Signed-off-by: default avatarXiaowei Song <songxiaowei@hisilicon.com>
Signed-off-by: default avatarYao Chen <chenyao11@huawei.com>
[lorenzo.pieralisi@arm.com: updated commit log]
Signed-off-by: default avatarLorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: default avatarAndy Shevchenko <andy.shevchenko@gmail.com>
parent ce397d21

drivers/pci/controller/dwc/pcie-kirin.c

+28 −0
Original line number Original line Diff line number Diff line
@@ -430,6 +430,9 @@ static int kirin_pcie_host_init(struct pcie_port *pp) 
{

{

	kirin_pcie_establish_link(pp);

	kirin_pcie_establish_link(pp);





	if (IS_ENABLED(CONFIG_PCI_MSI))

		dw_pcie_msi_init(pp);



	return 0;

	return 0;

}

}
@@ -445,9 +448,34 @@ static const struct dw_pcie_host_ops kirin_pcie_host_ops = { 
	.host_init = kirin_pcie_host_init,

	.host_init = kirin_pcie_host_init,

};

};





static int kirin_pcie_add_msi(struct dw_pcie *pci,

				struct platform_device *pdev)

{

	int irq;



	if (IS_ENABLED(CONFIG_PCI_MSI)) {

		irq = platform_get_irq(pdev, 0);

		if (irq < 0) {

			dev_err(&pdev->dev,

				"failed to get MSI IRQ (%d)\n", irq);

			return irq;

		}



		pci->pp.msi_irq = irq;

	}



	return 0;

}



static int __init kirin_add_pcie_port(struct dw_pcie *pci,

static int __init kirin_add_pcie_port(struct dw_pcie *pci,

				      struct platform_device *pdev)

				      struct platform_device *pdev)

{

{

	int ret;



	ret = kirin_pcie_add_msi(pci, pdev);

	if (ret)

		return ret;



	pci->pp.ops = &kirin_pcie_host_ops;

	pci->pp.ops = &kirin_pcie_host_ops;





	return dw_pcie_host_init(&pci->pp);

	return dw_pcie_host_init(&pci->pp);