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 = "airoha,an7583-switch", .data = &mt753x_table[ID_AN7583], },
15 { .compatible = "airoha,en7581-switch", .data = &mt753x_table[ID_EN7581], },
16 { .compatible = "mediatek,mt7988-switch", .data = &mt753x_table[ID_MT7988], },
17 { /* sentinel */ },
18 };
19 MODULE_DEVICE_TABLE(of, mt7988_of_match);
20
21 static const struct regmap_config sw_regmap_config = {
22 .name = "switch",
23 .reg_bits = 16,
24 .val_bits = 32,
25 .reg_stride = 4,
26 .max_register = MT7530_CREV,
27 };
28
29 static int
mt7988_probe(struct platform_device * pdev)30 mt7988_probe(struct platform_device *pdev)
31 {
32 struct mt7530_priv *priv;
33 void __iomem *base_addr;
34 int ret;
35
36 priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
37 if (!priv)
38 return -ENOMEM;
39
40 priv->bus = NULL;
41 priv->dev = &pdev->dev;
42
43 ret = mt7530_probe_common(priv);
44 if (ret)
45 return ret;
46
47 priv->rstc = devm_reset_control_get(&pdev->dev, NULL);
48 if (IS_ERR(priv->rstc)) {
49 dev_err(&pdev->dev, "Couldn't get our reset line\n");
50 return PTR_ERR(priv->rstc);
51 }
52
53 base_addr = devm_platform_ioremap_resource(pdev, 0);
54 if (IS_ERR(base_addr)) {
55 dev_err(&pdev->dev, "cannot request I/O memory space\n");
56 return -ENXIO;
57 }
58
59 priv->regmap = devm_regmap_init_mmio(&pdev->dev, base_addr,
60 &sw_regmap_config);
61 if (IS_ERR(priv->regmap))
62 return PTR_ERR(priv->regmap);
63
64 return dsa_register_switch(priv->ds);
65 }
66
mt7988_remove(struct platform_device * pdev)67 static void 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
mt7988_shutdown(struct platform_device * pdev)75 static void mt7988_shutdown(struct platform_device *pdev)
76 {
77 struct mt7530_priv *priv = platform_get_drvdata(pdev);
78
79 if (!priv)
80 return;
81
82 dsa_switch_shutdown(priv->ds);
83
84 dev_set_drvdata(&pdev->dev, NULL);
85 }
86
87 static struct platform_driver mt7988_platform_driver = {
88 .probe = mt7988_probe,
89 .remove = mt7988_remove,
90 .shutdown = mt7988_shutdown,
91 .driver = {
92 .name = "mt7530-mmio",
93 .of_match_table = mt7988_of_match,
94 },
95 };
96 module_platform_driver(mt7988_platform_driver);
97
98 MODULE_AUTHOR("Daniel Golle <daniel@makrotopia.org>");
99 MODULE_DESCRIPTION("Driver for Mediatek MT7530 Switch (MMIO)");
100 MODULE_LICENSE("GPL");
101