On Wed, Jul 11, 2018 at 11:09 AM, Xiaowei Song
<songxiaowei@xxxxxxxxxxxxx> wrote:
> Add support for MSI
>
FWIW,
Reviewed-by: Andy Shevchenko <andy.shevchenko@xxxxxxxxx>
> Signed-off-by: Xiaowei Song <songxiaowei@xxxxxxxxxxxxx>
> Signed-off-by: Yao Chen <chenyao11@xxxxxxxxxx>
> ---
> 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..5352e0c3be82 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 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,
> 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
>
--
With Best Regards,
Andy Shevchenko
