Commit | Line | Data |
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1fb37a81 RJ |
1 | /* |
2 | * Copyright (C) 2015 Broadcom Corporation | |
3 | * | |
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. | |
7 | * | |
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. | |
12 | */ | |
13 | ||
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> | |
26 | ||
27 | #include "pcie-iproc.h" | |
28 | ||
29 | static int iproc_pcie_pltfm_probe(struct platform_device *pdev) | |
30 | { | |
31 | struct iproc_pcie *pcie; | |
32 | struct device_node *np = pdev->dev.of_node; | |
33 | struct resource reg; | |
34 | resource_size_t iobase = 0; | |
35 | LIST_HEAD(res); | |
36 | int ret; | |
37 | ||
38 | pcie = devm_kzalloc(&pdev->dev, sizeof(struct iproc_pcie), GFP_KERNEL); | |
39 | if (!pcie) | |
40 | return -ENOMEM; | |
41 | ||
42 | pcie->dev = &pdev->dev; | |
43 | platform_set_drvdata(pdev, pcie); | |
44 | ||
45 | ret = of_address_to_resource(np, 0, ®); | |
46 | if (ret < 0) { | |
47 | dev_err(pcie->dev, "unable to obtain controller resources\n"); | |
48 | return ret; | |
49 | } | |
50 | ||
51 | pcie->base = devm_ioremap(pcie->dev, reg.start, resource_size(®)); | |
52 | if (!pcie->base) { | |
53 | dev_err(pcie->dev, "unable to map controller registers\n"); | |
54 | return -ENOMEM; | |
55 | } | |
56 | ||
57 | /* PHY use is optional */ | |
58 | pcie->phy = devm_phy_get(&pdev->dev, "pcie-phy"); | |
59 | if (IS_ERR(pcie->phy)) { | |
60 | if (PTR_ERR(pcie->phy) == -EPROBE_DEFER) | |
61 | return -EPROBE_DEFER; | |
62 | pcie->phy = NULL; | |
63 | } | |
64 | ||
65 | ret = of_pci_get_host_bridge_resources(np, 0, 0xff, &res, &iobase); | |
66 | if (ret) { | |
67 | dev_err(pcie->dev, | |
68 | "unable to get PCI host bridge resources\n"); | |
69 | return ret; | |
70 | } | |
71 | ||
72 | pcie->resources = &res; | |
73 | ||
c1e02cea HM |
74 | pcie->map_irq = of_irq_parse_and_map_pci; |
75 | ||
1fb37a81 RJ |
76 | ret = iproc_pcie_setup(pcie); |
77 | if (ret) { | |
78 | dev_err(pcie->dev, "PCIe controller setup failed\n"); | |
79 | return ret; | |
80 | } | |
81 | ||
82 | return 0; | |
83 | } | |
84 | ||
85 | static int iproc_pcie_pltfm_remove(struct platform_device *pdev) | |
86 | { | |
87 | struct iproc_pcie *pcie = platform_get_drvdata(pdev); | |
88 | ||
89 | return iproc_pcie_remove(pcie); | |
90 | } | |
91 | ||
92 | static const struct of_device_id iproc_pcie_of_match_table[] = { | |
93 | { .compatible = "brcm,iproc-pcie", }, | |
94 | { /* sentinel */ } | |
95 | }; | |
96 | MODULE_DEVICE_TABLE(of, iproc_pcie_of_match_table); | |
97 | ||
98 | static struct platform_driver iproc_pcie_pltfm_driver = { | |
99 | .driver = { | |
100 | .name = "iproc-pcie", | |
101 | .of_match_table = of_match_ptr(iproc_pcie_of_match_table), | |
102 | }, | |
103 | .probe = iproc_pcie_pltfm_probe, | |
104 | .remove = iproc_pcie_pltfm_remove, | |
105 | }; | |
106 | module_platform_driver(iproc_pcie_pltfm_driver); | |
107 | ||
108 | MODULE_AUTHOR("Ray Jui <rjui@broadcom.com>"); | |
109 | MODULE_DESCRIPTION("Broadcom iPROC PCIe platform driver"); | |
110 | MODULE_LICENSE("GPL v2"); |