diff options
Diffstat (limited to 'drivers/pci/host/pcie-iproc-platform.c')
-rw-r--r-- | drivers/pci/host/pcie-iproc-platform.c | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/drivers/pci/host/pcie-iproc-platform.c b/drivers/pci/host/pcie-iproc-platform.c new file mode 100644 index 000000000000..afad6c21fcfa --- /dev/null +++ b/drivers/pci/host/pcie-iproc-platform.c | |||
@@ -0,0 +1,108 @@ | |||
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 | |||
74 | ret = iproc_pcie_setup(pcie); | ||
75 | if (ret) { | ||
76 | dev_err(pcie->dev, "PCIe controller setup failed\n"); | ||
77 | return ret; | ||
78 | } | ||
79 | |||
80 | return 0; | ||
81 | } | ||
82 | |||
83 | static int iproc_pcie_pltfm_remove(struct platform_device *pdev) | ||
84 | { | ||
85 | struct iproc_pcie *pcie = platform_get_drvdata(pdev); | ||
86 | |||
87 | return iproc_pcie_remove(pcie); | ||
88 | } | ||
89 | |||
90 | static const struct of_device_id iproc_pcie_of_match_table[] = { | ||
91 | { .compatible = "brcm,iproc-pcie", }, | ||
92 | { /* sentinel */ } | ||
93 | }; | ||
94 | MODULE_DEVICE_TABLE(of, iproc_pcie_of_match_table); | ||
95 | |||
96 | static struct platform_driver iproc_pcie_pltfm_driver = { | ||
97 | .driver = { | ||
98 | .name = "iproc-pcie", | ||
99 | .of_match_table = of_match_ptr(iproc_pcie_of_match_table), | ||
100 | }, | ||
101 | .probe = iproc_pcie_pltfm_probe, | ||
102 | .remove = iproc_pcie_pltfm_remove, | ||
103 | }; | ||
104 | module_platform_driver(iproc_pcie_pltfm_driver); | ||
105 | |||
106 | MODULE_AUTHOR("Ray Jui <rjui@broadcom.com>"); | ||
107 | MODULE_DESCRIPTION("Broadcom iPROC PCIe platform driver"); | ||
108 | MODULE_LICENSE("GPL v2"); | ||