1 // SPDX-License-Identifier: GPL-2.0-only 2 3 #include <linux/module.h> 4 #include <linux/of_platform.h> 5 #include <linux/regmap.h> 6 #include <linux/regulator/consumer.h> 7 #include <linux/reset.h> 8 #include <net/dsa.h> 9 10 #include "mt7530.h" 11 12 static const struct of_device_id mt7988_of_match[] = { 13 { .compatible = "mediatek,mt7988-switch", .data = &mt753x_table[ID_MT7988], }, 14 { /* sentinel */ }, 15 }; 16 MODULE_DEVICE_TABLE(of, mt7988_of_match); 17 18 static int 19 mt7988_probe(struct platform_device *pdev) 20 { 21 static struct regmap_config *sw_regmap_config; 22 struct mt7530_priv *priv; 23 void __iomem *base_addr; 24 int ret; 25 26 priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); 27 if (!priv) 28 return -ENOMEM; 29 30 priv->bus = NULL; 31 priv->dev = &pdev->dev; 32 33 ret = mt7530_probe_common(priv); 34 if (ret) 35 return ret; 36 37 priv->rstc = devm_reset_control_get(&pdev->dev, NULL); 38 if (IS_ERR(priv->rstc)) { 39 dev_err(&pdev->dev, "Couldn't get our reset line\n"); 40 return PTR_ERR(priv->rstc); 41 } 42 43 base_addr = devm_platform_ioremap_resource(pdev, 0); 44 if (IS_ERR(base_addr)) { 45 dev_err(&pdev->dev, "cannot request I/O memory space\n"); 46 return -ENXIO; 47 } 48 49 sw_regmap_config = devm_kzalloc(&pdev->dev, sizeof(*sw_regmap_config), GFP_KERNEL); 50 if (!sw_regmap_config) 51 return -ENOMEM; 52 53 sw_regmap_config->name = "switch"; 54 sw_regmap_config->reg_bits = 16; 55 sw_regmap_config->val_bits = 32; 56 sw_regmap_config->reg_stride = 4; 57 sw_regmap_config->max_register = MT7530_CREV; 58 priv->regmap = devm_regmap_init_mmio(&pdev->dev, base_addr, sw_regmap_config); 59 if (IS_ERR(priv->regmap)) 60 return PTR_ERR(priv->regmap); 61 62 return dsa_register_switch(priv->ds); 63 } 64 65 static int 66 mt7988_remove(struct platform_device *pdev) 67 { 68 struct mt7530_priv *priv = platform_get_drvdata(pdev); 69 70 if (priv) 71 mt7530_remove_common(priv); 72 73 return 0; 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