diff options
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/host/pci-imx6.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/pci/host/pci-imx6.c b/drivers/pci/host/pci-imx6.c index 29e77508d285..a5645ae4aef0 100644 --- a/drivers/pci/host/pci-imx6.c +++ b/drivers/pci/host/pci-imx6.c @@ -25,6 +25,7 @@ #include <linux/resource.h> #include <linux/signal.h> #include <linux/types.h> +#include <linux/interrupt.h> #include "pcie-designware.h" @@ -314,6 +315,13 @@ static int imx6_pcie_wait_for_link(struct pcie_port *pp) return 0; } +static irqreturn_t imx6_pcie_msi_handler(int irq, void *arg) +{ + struct pcie_port *pp = arg; + + return dw_handle_msi_irq(pp); +} + static int imx6_pcie_start_link(struct pcie_port *pp) { struct imx6_pcie *imx6_pcie = to_imx6_pcie(pp); @@ -388,6 +396,9 @@ static void imx6_pcie_host_init(struct pcie_port *pp) dw_pcie_setup_rc(pp); imx6_pcie_start_link(pp); + + if (IS_ENABLED(CONFIG_PCI_MSI)) + dw_pcie_msi_init(pp); } static void imx6_pcie_reset_phy(struct pcie_port *pp) @@ -477,6 +488,22 @@ static int __init imx6_add_pcie_port(struct pcie_port *pp, { int ret; + if (IS_ENABLED(CONFIG_PCI_MSI)) { + pp->msi_irq = platform_get_irq_byname(pdev, "msi"); + if (pp->msi_irq <= 0) { + dev_err(&pdev->dev, "failed to get MSI irq\n"); + return -ENODEV; + } + + ret = devm_request_irq(&pdev->dev, pp->msi_irq, + imx6_pcie_msi_handler, + IRQF_SHARED, "mx6-pcie-msi", pp); + if (ret) { + dev_err(&pdev->dev, "failed to request MSI irq\n"); + return -ENODEV; + } + } + pp->root_bus_nr = -1; pp->ops = &imx6_pcie_host_ops; |