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 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 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 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