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 int 22 mt7988_probe(struct platform_device *pdev) 23 { 24 static struct regmap_config *sw_regmap_config; 25 struct mt7530_priv *priv; 26 void __iomem *base_addr; 27 int ret; 28 29 priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); 30 if (!priv) 31 return -ENOMEM; 32 33 priv->bus = NULL; 34 priv->dev = &pdev->dev; 35 36 ret = mt7530_probe_common(priv); 37 if (ret) 38 return ret; 39 40 priv->rstc = devm_reset_control_get(&pdev->dev, NULL); 41 if (IS_ERR(priv->rstc)) { 42 dev_err(&pdev->dev, "Couldn't get our reset line\n"); 43 return PTR_ERR(priv->rstc); 44 } 45 46 base_addr = devm_platform_ioremap_resource(pdev, 0); 47 if (IS_ERR(base_addr)) { 48 dev_err(&pdev->dev, "cannot request I/O memory space\n"); 49 return -ENXIO; 50 } 51 52 sw_regmap_config = devm_kzalloc(&pdev->dev, sizeof(*sw_regmap_config), GFP_KERNEL); 53 if (!sw_regmap_config) 54 return -ENOMEM; 55 56 sw_regmap_config->name = "switch"; 57 sw_regmap_config->reg_bits = 16; 58 sw_regmap_config->val_bits = 32; 59 sw_regmap_config->reg_stride = 4; 60 sw_regmap_config->max_register = MT7530_CREV; 61 priv->regmap = devm_regmap_init_mmio(&pdev->dev, base_addr, sw_regmap_config); 62 if (IS_ERR(priv->regmap)) 63 return PTR_ERR(priv->regmap); 64 65 return dsa_register_switch(priv->ds); 66 } 67 68 static void mt7988_remove(struct platform_device *pdev) 69 { 70 struct mt7530_priv *priv = platform_get_drvdata(pdev); 71 72 if (priv) 73 mt7530_remove_common(priv); 74 } 75 76 static void mt7988_shutdown(struct platform_device *pdev) 77 { 78 struct mt7530_priv *priv = platform_get_drvdata(pdev); 79 80 if (!priv) 81 return; 82 83 dsa_switch_shutdown(priv->ds); 84 85 dev_set_drvdata(&pdev->dev, NULL); 86 } 87 88 static struct platform_driver mt7988_platform_driver = { 89 .probe = mt7988_probe, 90 .remove = mt7988_remove, 91 .shutdown = mt7988_shutdown, 92 .driver = { 93 .name = "mt7530-mmio", 94 .of_match_table = mt7988_of_match, 95 }, 96 }; 97 module_platform_driver(mt7988_platform_driver); 98 99 MODULE_AUTHOR("Daniel Golle <daniel@makrotopia.org>"); 100 MODULE_DESCRIPTION("Driver for Mediatek MT7530 Switch (MMIO)"); 101 MODULE_LICENSE("GPL"); 102