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

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Message-ID: <99B4C6BADD9E3241B25E52B02BA737C5412D982C@dggema525-mbx.china.huawei.com>
Date:   Thu, 12 Jul 2018 01:00:25 +0000
From:   "Songxiaowei (Kirin_DRV)" <songxiaowei@...ilicon.com>
To:     Lorenzo Pieralisi <lorenzo.pieralisi@....com>
CC:     Wangbinghui <wangbinghui@...ilicon.com>,
        "bhelgaas@...gle.com" <bhelgaas@...gle.com>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "andy.shevchenko@...il.com" <andy.shevchenko@...il.com>,
        Kongfei <kongfei@...ilicon.com>,
        "chenyao (F)" <chenyao11@...wei.com>
Subject: 答复: [PATCH v7 1/1] PCI: kirin: Add MSI support

Hi Lorenzo,

Thanks a lot.

Best Regards,
Xiaowei Song.

> -----邮件原件-----
> 发件人: Lorenzo Pieralisi [mailto:lorenzo.pieralisi@....com]
> 发送时间: 2018年7月11日 19:33
> 收件人: Songxiaowei (Kirin_DRV) <songxiaowei@...ilicon.com>
> 抄送: Wangbinghui <wangbinghui@...ilicon.com>; bhelgaas@...gle.com;
> robh+dt@...nel.org; linux-pci@...r.kernel.org; linux-kernel@...r.kernel.org;
> Suzhuangluan <suzhuangluan@...ilicon.com>; andy.shevchenko@...il.com;
> Kongfei <kongfei@...ilicon.com>; chenyao (F) <chenyao11@...wei.com>
> 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@...ilicon.com>
> > Signed-off-by: Yao Chen <chenyao11@...wei.com>
> > ---
> >  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
> >