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Commit bd33b87a authored by Minghuan Lian's avatar Minghuan Lian Committed by Bjorn Helgaas
Browse files

PCI: layerscape: Add ls_pcie_msi_host_init() 



Layerscape PCIe has its own MSI implementation.

Register ls_pcie_msi_host_init() to avoid using DesignWare's MSI.

[bhelgaas: add comment]
Signed-off-by: default avatarMinghuan Lian <Minghuan.Lian@freescale.com>
Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
parent 5192ec7b

drivers/pci/host/pci-layerscape.c

+23 −0
Original line number Diff line number Diff line
@@ -150,14 +150,37 @@ 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;



	/*

	 * The MSI domain is set by the generic of_msi_configure().  This

	 * .msi_host_init() function keeps us from doing the default MSI

	 * domain setup in dw_pcie_host_init() and also enforces the

	 * requirement that "msi-parent" exists.

	 */

	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 = {