2 * Copyright (C) 2015 Broadcom Corporation
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License as
6 * published by the Free Software Foundation version 2.
8 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
9 * kind, whether express or implied; without even the implied warranty
10 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
14 #include <linux/kernel.h>
15 #include <linux/pci.h>
16 #include <linux/clk.h>
17 #include <linux/module.h>
18 #include <linux/slab.h>
19 #include <linux/interrupt.h>
20 #include <linux/platform_device.h>
21 #include <linux/of_address.h>
22 #include <linux/of_pci.h>
23 #include <linux/of_irq.h>
24 #include <linux/of_platform.h>
25 #include <linux/phy/phy.h>
27 #include "pcie-iproc.h"
29 static const struct of_device_id iproc_pcie_of_match_table[] = {
31 .compatible = "brcm,iproc-pcie",
32 .data = (int *)IPROC_PCIE_PAXB,
34 .compatible = "brcm,iproc-pcie-paxc",
35 .data = (int *)IPROC_PCIE_PAXC,
39 MODULE_DEVICE_TABLE(of, iproc_pcie_of_match_table);
41 static int iproc_pcie_pltfm_probe(struct platform_device *pdev)
43 const struct of_device_id *of_id;
44 struct iproc_pcie *pcie;
45 struct device_node *np = pdev->dev.of_node;
47 resource_size_t iobase = 0;
51 of_id = of_match_device(iproc_pcie_of_match_table, &pdev->dev);
55 pcie = devm_kzalloc(&pdev->dev, sizeof(struct iproc_pcie), GFP_KERNEL);
59 pcie->dev = &pdev->dev;
60 pcie->type = (enum iproc_pcie_type)of_id->data;
61 platform_set_drvdata(pdev, pcie);
63 ret = of_address_to_resource(np, 0, ®);
65 dev_err(pcie->dev, "unable to obtain controller resources\n");
69 pcie->base = devm_ioremap(pcie->dev, reg.start, resource_size(®));
71 dev_err(pcie->dev, "unable to map controller registers\n");
74 pcie->base_addr = reg.start;
76 if (of_property_read_bool(np, "brcm,pcie-ob")) {
79 ret = of_property_read_u32(np, "brcm,pcie-ob-axi-offset",
83 "missing brcm,pcie-ob-axi-offset property\n");
86 pcie->ob.axi_offset = val;
88 ret = of_property_read_u32(np, "brcm,pcie-ob-window-size",
92 "missing brcm,pcie-ob-window-size property\n");
95 pcie->ob.window_size = (resource_size_t)val * SZ_1M;
97 if (of_property_read_bool(np, "brcm,pcie-ob-oarr-size"))
98 pcie->ob.set_oarr_size = true;
100 pcie->need_ob_cfg = true;
103 /* PHY use is optional */
104 pcie->phy = devm_phy_get(&pdev->dev, "pcie-phy");
105 if (IS_ERR(pcie->phy)) {
106 if (PTR_ERR(pcie->phy) == -EPROBE_DEFER)
107 return -EPROBE_DEFER;
111 ret = of_pci_get_host_bridge_resources(np, 0, 0xff, &res, &iobase);
114 "unable to get PCI host bridge resources\n");
118 pcie->map_irq = of_irq_parse_and_map_pci;
120 ret = iproc_pcie_setup(pcie, &res);
122 dev_err(pcie->dev, "PCIe controller setup failed\n");
124 pci_free_resource_list(&res);
129 static int iproc_pcie_pltfm_remove(struct platform_device *pdev)
131 struct iproc_pcie *pcie = platform_get_drvdata(pdev);
133 return iproc_pcie_remove(pcie);
136 static struct platform_driver iproc_pcie_pltfm_driver = {
138 .name = "iproc-pcie",
139 .of_match_table = of_match_ptr(iproc_pcie_of_match_table),
141 .probe = iproc_pcie_pltfm_probe,
142 .remove = iproc_pcie_pltfm_remove,
144 module_platform_driver(iproc_pcie_pltfm_driver);
147 MODULE_DESCRIPTION("Broadcom iPROC PCIe platform driver");
148 MODULE_LICENSE("GPL v2");