Layerscape PCIe has its own MSI implementation. The patch registers
ls_pcie_msi_host_init() to avoid using Designware's MSI.
Signed-off-by: Minghuan Lian <Minghuan.Lian@xxxxxxxxxxxxx>
---
Change log
v4: split from [PATCH v3] PCI: layerscape: Add PCIe support for LS1043a and LS2080a
drivers/pci/host/pci-layerscape.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/drivers/pci/host/pci-layerscape.c b/drivers/pci/host/pci-layerscape.c
index c53692a..8fac6c8 100644
--- a/drivers/pci/host/pci-layerscape.c
+++ b/drivers/pci/host/pci-layerscape.c
@@ -150,14 +150,31 @@ static void ls_pcie_host_init(struct pcie_port *pp)
iowrite32(0, pcie->dbi + PCIE_DBI_RO_WR_EN);
}
+static int ls_pcie_msi_host_init(struct pcie_port *pp,
+ struct msi_controller *chip)
+{
+ struct device_node *msi_node;
+ struct device_node *np = pp->dev->of_node;
+
+ msi_node = of_parse_phandle(np, "msi-parent", 0);
+ if (!msi_node) {
+ dev_err(pp->dev, "failed to find msi-parent\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
static struct pcie_host_ops ls1021_pcie_host_ops = {
.link_up = ls1021_pcie_link_up,
.host_init = ls1021_pcie_host_init,
+ .msi_host_init = ls_pcie_msi_host_init,
};
static struct pcie_host_ops ls_pcie_host_ops = {
.link_up = ls_pcie_link_up,
.host_init = ls_pcie_host_init,
+ .msi_host_init = ls_pcie_msi_host_init,
};
static struct ls_pcie_drvdata ls1021_drvdata = {
--
1.9.1
--
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