1 // SPDX-License-Identifier: GPL-2.0-only
2
3 #include <linux/mod_devicetable.h>
4 #include <linux/module.h>
5 #include <linux/platform_device.h>
6 #include <linux/regmap.h>
7 #include <linux/regulator/consumer.h>
8 #include <linux/reset.h>
9 #include <net/dsa.h>
10
11 #include "mt7530.h"
12
13 static const struct of_device_id mt7988_of_match[] = {
14 { .compatible = "mediatek,mt7988-switch", .data = &mt753x_table[ID_MT7988], },
15 { /* sentinel */ },
16 };
17 MODULE_DEVICE_TABLE(of, mt7988_of_match);
18
19 static int
mt7988_probe(struct platform_device * pdev)20 mt7988_probe(struct platform_device *pdev)
21 {
22 static struct regmap_config *sw_regmap_config;
23 struct mt7530_priv *priv;
24 void __iomem *base_addr;
25 int ret;
26
27 priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
28 if (!priv)
29 return -ENOMEM;
30
31 priv->bus = NULL;
32 priv->dev = &pdev->dev;
33
34 ret = mt7530_probe_common(priv);
35 if (ret)
36 return ret;
37
38 priv->rstc = devm_reset_control_get(&pdev->dev, NULL);
39 if (IS_ERR(priv->rstc)) {
40 dev_err(&pdev->dev, "Couldn't get our reset line\n");
41 return PTR_ERR(priv->rstc);
42 }
43
44 base_addr = devm_platform_ioremap_resource(pdev, 0);
45 if (IS_ERR(base_addr)) {
46 dev_err(&pdev->dev, "cannot request I/O memory space\n");
47 return -ENXIO;
48 }
49
50 sw_regmap_config = devm_kzalloc(&pdev->dev, sizeof(*sw_regmap_config), GFP_KERNEL);
51 if (!sw_regmap_config)
52 return -ENOMEM;
53
54 sw_regmap_config->name = "switch";
55 sw_regmap_config->reg_bits = 16;
56 sw_regmap_config->val_bits = 32;
57 sw_regmap_config->reg_stride = 4;
58 sw_regmap_config->max_register = MT7530_CREV;
59 priv->regmap = devm_regmap_init_mmio(&pdev->dev, base_addr, sw_regmap_config);
60 if (IS_ERR(priv->regmap))
61 return PTR_ERR(priv->regmap);
62
63 return dsa_register_switch(priv->ds);
64 }
65
66 static int
mt7988_remove(struct platform_device * pdev)67 mt7988_remove(struct platform_device *pdev)
68 {
69 struct mt7530_priv *priv = platform_get_drvdata(pdev);
70
71 if (priv)
72 mt7530_remove_common(priv);
73
74 return 0;
75 }
76
mt7988_shutdown(struct platform_device * pdev)77 static void mt7988_shutdown(struct platform_device *pdev)
78 {
79 struct mt7530_priv *priv = platform_get_drvdata(pdev);
80
81 if (!priv)
82 return;
83
84 dsa_switch_shutdown(priv->ds);
85
86 dev_set_drvdata(&pdev->dev, NULL);
87 }
88
89 static struct platform_driver mt7988_platform_driver = {
90 .probe = mt7988_probe,
91 .remove = mt7988_remove,
92 .shutdown = mt7988_shutdown,
93 .driver = {
94 .name = "mt7530-mmio",
95 .of_match_table = mt7988_of_match,
96 },
97 };
98 module_platform_driver(mt7988_platform_driver);
99
100 MODULE_AUTHOR("Daniel Golle <daniel@makrotopia.org>");
101 MODULE_DESCRIPTION("Driver for Mediatek MT7530 Switch (MMIO)");
102 MODULE_LICENSE("GPL");
103