Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / pci / host / pcie-iproc-platform.c

diff --git a/kernel/drivers/pci/host/pcie-iproc-platform.c b/kernel/drivers/pci/host/pcie-iproc-platform.c
new file mode 100644 (file)
index 0000000..afad6c2
--- /dev/null
+++ b/kernel/drivers/pci/host/pcie-iproc-platform.c
@@ -0,0 +1,108 @@
+/*
+ * Copyright (C) 2015 Broadcom Corporation
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/clk.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/of_address.h>
+#include <linux/of_pci.h>
+#include <linux/of_irq.h>
+#include <linux/of_platform.h>
+#include <linux/phy/phy.h>
+
+#include "pcie-iproc.h"
+
+static int iproc_pcie_pltfm_probe(struct platform_device *pdev)
+{
+       struct iproc_pcie *pcie;
+       struct device_node *np = pdev->dev.of_node;
+       struct resource reg;
+       resource_size_t iobase = 0;
+       LIST_HEAD(res);
+       int ret;
+
+       pcie = devm_kzalloc(&pdev->dev, sizeof(struct iproc_pcie), GFP_KERNEL);
+       if (!pcie)
+               return -ENOMEM;
+
+       pcie->dev = &pdev->dev;
+       platform_set_drvdata(pdev, pcie);
+
+       ret = of_address_to_resource(np, 0, &reg);
+       if (ret < 0) {
+               dev_err(pcie->dev, "unable to obtain controller resources\n");
+               return ret;
+       }
+
+       pcie->base = devm_ioremap(pcie->dev, reg.start, resource_size(&reg));
+       if (!pcie->base) {
+               dev_err(pcie->dev, "unable to map controller registers\n");
+               return -ENOMEM;
+       }
+
+       /* PHY use is optional */
+       pcie->phy = devm_phy_get(&pdev->dev, "pcie-phy");
+       if (IS_ERR(pcie->phy)) {
+               if (PTR_ERR(pcie->phy) == -EPROBE_DEFER)
+                       return -EPROBE_DEFER;
+               pcie->phy = NULL;
+       }
+
+       ret = of_pci_get_host_bridge_resources(np, 0, 0xff, &res, &iobase);
+       if (ret) {
+               dev_err(pcie->dev,
+                       "unable to get PCI host bridge resources\n");
+               return ret;
+       }
+
+       pcie->resources = &res;
+
+       ret = iproc_pcie_setup(pcie);
+       if (ret) {
+               dev_err(pcie->dev, "PCIe controller setup failed\n");
+               return ret;
+       }
+
+       return 0;
+}
+
+static int iproc_pcie_pltfm_remove(struct platform_device *pdev)
+{
+       struct iproc_pcie *pcie = platform_get_drvdata(pdev);
+
+       return iproc_pcie_remove(pcie);
+}
+
+static const struct of_device_id iproc_pcie_of_match_table[] = {
+       { .compatible = "brcm,iproc-pcie", },
+       { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, iproc_pcie_of_match_table);
+
+static struct platform_driver iproc_pcie_pltfm_driver = {
+       .driver = {
+               .name = "iproc-pcie",
+               .of_match_table = of_match_ptr(iproc_pcie_of_match_table),
+       },
+       .probe = iproc_pcie_pltfm_probe,
+       .remove = iproc_pcie_pltfm_remove,
+};
+module_platform_driver(iproc_pcie_pltfm_driver);
+
+MODULE_AUTHOR("Ray Jui <rjui@broadcom.com>");
+MODULE_DESCRIPTION("Broadcom iPROC PCIe platform driver");
+MODULE_LICENSE("GPL v2");