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,en7581-switch", .data = &mt753x_table[ID_EN7581], },
15 { .compatible = "mediatek,mt7988-switch", .data = &mt753x_table[ID_MT7988], },
16 { /* sentinel */ },
17 };
18 MODULE_DEVICE_TABLE(of, mt7988_of_match);
19
20 static int
mt7988_probe(struct platform_device * pdev)21 mt7988_probe(struct platform_device *pdev)
22 {
23 static struct regmap_config *sw_regmap_config;
24 struct mt7530_priv *priv;
25 void __iomem *base_addr;
26 int ret;
27
28 priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
29 if (!priv)
30 return -ENOMEM;
31
32 priv->bus = NULL;
33 priv->dev = &pdev->dev;
34
35 ret = mt7530_probe_common(priv);
36 if (ret)
37 return ret;
38
39 priv->rstc = devm_reset_control_get(&pdev->dev, NULL);
40 if (IS_ERR(priv->rstc)) {
41 dev_err(&pdev->dev, "Couldn't get our reset line\n");
42 return PTR_ERR(priv->rstc);
43 }
44
45 base_addr = devm_platform_ioremap_resource(pdev, 0);
46 if (IS_ERR(base_addr)) {
47 dev_err(&pdev->dev, "cannot request I/O memory space\n");
48 return -ENXIO;
49 }
50
51 sw_regmap_config = devm_kzalloc(&pdev->dev, sizeof(*sw_regmap_config), GFP_KERNEL);
52 if (!sw_regmap_config)
53 return -ENOMEM;
54
55 sw_regmap_config->name = "switch";
56 sw_regmap_config->reg_bits = 16;
57 sw_regmap_config->val_bits = 32;
58 sw_regmap_config->reg_stride = 4;
59 sw_regmap_config->max_register = MT7530_CREV;
60 priv->regmap = devm_regmap_init_mmio(&pdev->dev, base_addr, 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_new = 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