diff options
| author | Xiaowei Song | 2018-07-11 10:09:46 +0200 |
|---|---|---|
| committer | Lorenzo Pieralisi | 2018-07-11 13:20:41 +0200 |
| commit | 141cb3d4ee521eff45d0520327106ddfe0abe90a (patch) | |
| tree | 03fb2e045fa62ebd530b331503495172060552cc /drivers/pci/controller/dwc/pcie-kirin.c | |
| parent | Linux 4.18-rc1 (diff) | |
| download | kernel-qcow2-linux-141cb3d4ee521eff45d0520327106ddfe0abe90a.tar.gz kernel-qcow2-linux-141cb3d4ee521eff45d0520327106ddfe0abe90a.tar.xz kernel-qcow2-linux-141cb3d4ee521eff45d0520327106ddfe0abe90a.zip | |
PCI: kirin: Add MSI support
Add support for MSI to the kirin host controller driver, based
on the generic dwc infrastructure.
Signed-off-by: Xiaowei Song <songxiaowei@hisilicon.com>
Signed-off-by: Yao Chen <chenyao11@huawei.com>
[lorenzo.pieralisi@arm.com: updated commit log]
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Diffstat (limited to 'drivers/pci/controller/dwc/pcie-kirin.c')
| -rw-r--r-- | drivers/pci/controller/dwc/pcie-kirin.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/pci/controller/dwc/pcie-kirin.c b/drivers/pci/controller/dwc/pcie-kirin.c index d2970a009eb5..5352e0c3be82 100644 --- a/drivers/pci/controller/dwc/pcie-kirin.c +++ b/drivers/pci/controller/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); |