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Subject答复: [PATCH v5 1/1] PCI: kirin: Add MSI supp ort
Date
Hi Bjorn Helgaas,

Would you help to review this patch?

Best regards,

Xiaowei.

> -----邮件原件-----
> 发件人: Songxiaowei (Kirin_DRV)
> 发送时间: 2018年6月28日 20:48
> 收件人: Wangbinghui <wangbinghui@hisilicon.com>; bhelgaas@google.com;
> robh+dt@kernel.org; linux-pci@vger.kernel.org; linux-kernel@vger.kernel.org;
> dimitrysh@google.com
> 抄送: chenyao (F) <chenyao11@huawei.com>; Songxiaowei (Kirin_DRV)
> <songxiaowei@hisilicon.com>
> 主题: [PATCH v5 1/1] PCI: kirin: Add MSI support
>
> Add support for MSI.
>
> Signed-off-by: Xiaowei Song <songxiaowei@hisilicon.com>
> ---
> drivers/pci/dwc/pcie-kirin.c | 28 ++++++++++++++++++++++++++++
> 1 file changed, 28 insertions(+)
>
> diff --git a/drivers/pci/dwc/pcie-kirin.c b/drivers/pci/dwc/pcie-kirin.c index
> d2970a009eb5..6997276eb69c 100644
> --- a/drivers/pci/dwc/pcie-kirin.c
> +++ b/drivers/pci/dwc/pcie-kirin.c
> @@ -430,6 +430,9 @@ static int kirin_pcie_host_init(struct pcie_port *pp)
> {
> kirin_pcie_establish_link(pp);
>
> + if (IS_ENABLED(CONFIG_PCI_MSI))
> + dw_pcie_msi_init(pp);
> +
> return 0;
> }
>
> @@ -445,9 +448,34 @@ static const struct dw_pcie_host_ops
> kirin_pcie_host_ops = {
> .host_init = kirin_pcie_host_init,
> };
>
> +static int kirin_pcie_add_msi(struct dw_pcie *pci,
> + struct platform_device *pdev)
> +{
> + int ret = 0;
> +
> + if (IS_ENABLED(CONFIG_PCI_MSI)) {
> + ret = platform_get_irq(pdev, 0);
> + if (ret < 0) {
> + dev_err(&pdev->dev,
> + "failed to get MSI IRQ (%d)\n", ret);
> + return ret;
> + }
> +
> + pci->pp.msi_irq = ret;
> + }
> +
> + return ret;
> +}
> +
> static int __init kirin_add_pcie_port(struct dw_pcie *pci,
> struct platform_device *pdev) {
> + int ret;
> +
> + ret = kirin_pcie_add_msi(pci, pdev);
> + if (ret)
> + return ret;
> +
> pci->pp.ops = &kirin_pcie_host_ops;
>
> return dw_pcie_host_init(&pci->pp);
> --
> 2.11.GIT

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