1 /*
2  * Generic DWMAC platform driver
3  *
4  * Copyright (C) 2007-2011  STMicroelectronics Ltd
5  * Copyright (C) 2015 Joachim Eastwood <manabian@gmail.com>
6  *
7  * This file is licensed under the terms of the GNU General Public
8  * License version 2. This program is licensed "as is" without any
9  * warranty of any kind, whether express or implied.
10  */
11 
12 #include <linux/module.h>
13 #include <linux/of.h>
14 #include <linux/platform_device.h>
15 
16 #include "stmmac.h"
17 #include "stmmac_platform.h"
18 
dwmac_generic_probe(struct platform_device * pdev)19 static int dwmac_generic_probe(struct platform_device *pdev)
20 {
21 	struct plat_stmmacenet_data *plat_dat;
22 	struct stmmac_resources stmmac_res;
23 	int ret;
24 
25 	ret = stmmac_get_platform_resources(pdev, &stmmac_res);
26 	if (ret)
27 		return ret;
28 
29 	if (pdev->dev.of_node) {
30 		plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
31 		if (IS_ERR(plat_dat)) {
32 			dev_err(&pdev->dev, "dt configuration failed\n");
33 			return PTR_ERR(plat_dat);
34 		}
35 	} else {
36 		plat_dat = dev_get_platdata(&pdev->dev);
37 		if (!plat_dat) {
38 			dev_err(&pdev->dev, "no platform data provided\n");
39 			return  -EINVAL;
40 		}
41 
42 		/* Set default value for multicast hash bins */
43 		plat_dat->multicast_filter_bins = HASH_TABLE_SIZE;
44 
45 		/* Set default value for unicast filter entries */
46 		plat_dat->unicast_filter_entries = 1;
47 	}
48 
49 	/* Custom initialisation (if needed) */
50 	if (plat_dat->init) {
51 		ret = plat_dat->init(pdev, plat_dat->bsp_priv);
52 		if (ret)
53 			goto err_remove_config_dt;
54 	}
55 
56 	ret = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
57 	if (ret)
58 		goto err_exit;
59 
60 	return 0;
61 
62 err_exit:
63 	if (plat_dat->exit)
64 		plat_dat->exit(pdev, plat_dat->bsp_priv);
65 err_remove_config_dt:
66 	if (pdev->dev.of_node)
67 		stmmac_remove_config_dt(pdev, plat_dat);
68 
69 	return ret;
70 }
71 
72 static const struct of_device_id dwmac_generic_match[] = {
73 	{ .compatible = "st,spear600-gmac"},
74 	{ .compatible = "snps,dwmac-3.40a"},
75 	{ .compatible = "snps,dwmac-3.50a"},
76 	{ .compatible = "snps,dwmac-3.610"},
77 	{ .compatible = "snps,dwmac-3.70a"},
78 	{ .compatible = "snps,dwmac-3.710"},
79 	{ .compatible = "snps,dwmac-4.00"},
80 	{ .compatible = "snps,dwmac-4.10a"},
81 	{ .compatible = "snps,dwmac"},
82 	{ .compatible = "snps,dwxgmac-2.10"},
83 	{ .compatible = "snps,dwxgmac"},
84 	{ }
85 };
86 MODULE_DEVICE_TABLE(of, dwmac_generic_match);
87 
88 static struct platform_driver dwmac_generic_driver = {
89 	.probe  = dwmac_generic_probe,
90 	.remove = stmmac_pltfr_remove,
91 	.driver = {
92 		.name           = STMMAC_RESOURCE_NAME,
93 		.pm		= &stmmac_pltfr_pm_ops,
94 		.of_match_table = of_match_ptr(dwmac_generic_match),
95 	},
96 };
97 module_platform_driver(dwmac_generic_driver);
98 
99 MODULE_DESCRIPTION("Generic dwmac driver");
100 MODULE_LICENSE("GPL v2");
101