1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Sophgo DWMAC platform driver
4 *
5 * Copyright (C) 2024 Inochi Amaoto <inochiama@gmail.com>
6 */
7
8 #include <linux/clk.h>
9 #include <linux/module.h>
10 #include <linux/mod_devicetable.h>
11 #include <linux/platform_device.h>
12
13 #include "stmmac_platform.h"
14
sophgo_sg2044_dwmac_init(struct platform_device * pdev,struct plat_stmmacenet_data * plat_dat,struct stmmac_resources * stmmac_res)15 static int sophgo_sg2044_dwmac_init(struct platform_device *pdev,
16 struct plat_stmmacenet_data *plat_dat,
17 struct stmmac_resources *stmmac_res)
18 {
19 plat_dat->clk_tx_i = devm_clk_get_enabled(&pdev->dev, "tx");
20 if (IS_ERR(plat_dat->clk_tx_i))
21 return dev_err_probe(&pdev->dev, PTR_ERR(plat_dat->clk_tx_i),
22 "failed to get tx clock\n");
23
24 plat_dat->flags |= STMMAC_FLAG_SPH_DISABLE;
25 plat_dat->set_clk_tx_rate = stmmac_set_clk_tx_rate;
26 plat_dat->multicast_filter_bins = 0;
27 plat_dat->unicast_filter_entries = 1;
28
29 return 0;
30 }
31
sophgo_dwmac_probe(struct platform_device * pdev)32 static int sophgo_dwmac_probe(struct platform_device *pdev)
33 {
34 struct plat_stmmacenet_data *plat_dat;
35 struct stmmac_resources stmmac_res;
36 struct device *dev = &pdev->dev;
37 int ret;
38
39 ret = stmmac_get_platform_resources(pdev, &stmmac_res);
40 if (ret)
41 return dev_err_probe(dev, ret,
42 "failed to get platform resources\n");
43
44 plat_dat = devm_stmmac_probe_config_dt(pdev, stmmac_res.mac);
45 if (IS_ERR(plat_dat))
46 return dev_err_probe(dev, PTR_ERR(plat_dat),
47 "failed to parse DT parameters\n");
48
49 ret = sophgo_sg2044_dwmac_init(pdev, plat_dat, &stmmac_res);
50 if (ret)
51 return ret;
52
53 return stmmac_dvr_probe(dev, plat_dat, &stmmac_res);
54 }
55
56 static const struct of_device_id sophgo_dwmac_match[] = {
57 { .compatible = "sophgo,sg2044-dwmac" },
58 { /* sentinel */ }
59 };
60 MODULE_DEVICE_TABLE(of, sophgo_dwmac_match);
61
62 static struct platform_driver sophgo_dwmac_driver = {
63 .probe = sophgo_dwmac_probe,
64 .remove = stmmac_pltfr_remove,
65 .driver = {
66 .name = "sophgo-dwmac",
67 .pm = &stmmac_pltfr_pm_ops,
68 .of_match_table = sophgo_dwmac_match,
69 },
70 };
71 module_platform_driver(sophgo_dwmac_driver);
72
73 MODULE_AUTHOR("Inochi Amaoto <inochiama@gmail.com>");
74 MODULE_DESCRIPTION("Sophgo DWMAC platform driver");
75 MODULE_LICENSE("GPL");
76