答复: [PATCH v7 1/1] PCI: kirin: Add MSI support

[Songxiaowei (Kirin_DRV)]

Hi Lorenzo,

Thanks a lot.

Best Regards,
Xiaowei Song.

> -----邮件原件-----
> 发件人: Lorenzo Pieralisi [mailto:lorenzo.pieralisi@xxxxxxx]
> 发送时间: 2018年7月11日 19:33
> 收件人: Songxiaowei (Kirin_DRV) <songxiaowei@xxxxxxxxxxxxx>
> 抄送: Wangbinghui <wangbinghui@xxxxxxxxxxxxx>; bhelgaas@xxxxxxxxxx;
> robh+dt@xxxxxxxxxx; linux-pci@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx;
> Suzhuangluan <suzhuangluan@xxxxxxxxxxxxx>; andy.shevchenko@xxxxxxxxx;
> Kongfei <kongfei@xxxxxxxxxxxxx>; chenyao (F) <chenyao11@xxxxxxxxxx>
> 主题: Re: [PATCH v7 1/1] PCI: kirin: Add MSI support
> 
> On Wed, Jul 11, 2018 at 04:09:46PM +0800, Xiaowei Song wrote:
> > Add support for MSI
> >
> > 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(+)
> 
> Applied to pci/dwc for v4.19, thanks.
> 
> Lorenzo
> 
> > 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
> >