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 = "mediatek,mt7988-switch", .data = &mt753x_table[ID_MT7988], }, 15 { /* sentinel */ }, 16 }; 17 MODULE_DEVICE_TABLE(of, mt7988_of_match); 18 19 static int 20 mt7988_probe(struct platform_device *pdev) 21 { 22 static struct regmap_config *sw_regmap_config; 23 struct mt7530_priv *priv; 24 void __iomem *base_addr; 25 int ret; 26 27 priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); 28 if (!priv) 29 return -ENOMEM; 30 31 priv->bus = NULL; 32 priv->dev = &pdev->dev; 33 34 ret = mt7530_probe_common(priv); 35 if (ret) 36 return ret; 37 38 priv->rstc = devm_reset_control_get(&pdev->dev, NULL); 39 if (IS_ERR(priv->rstc)) { 40 dev_err(&pdev->dev, "Couldn't get our reset line\n"); 41 return PTR_ERR(priv->rstc); 42 } 43 44 base_addr = devm_platform_ioremap_resource(pdev, 0); 45 if (IS_ERR(base_addr)) { 46 dev_err(&pdev->dev, "cannot request I/O memory space\n"); 47 return -ENXIO; 48 } 49 50 sw_regmap_config = devm_kzalloc(&pdev->dev, sizeof(*sw_regmap_config), GFP_KERNEL); 51 if (!sw_regmap_config) 52 return -ENOMEM; 53 54 sw_regmap_config->name = "switch"; 55 sw_regmap_config->reg_bits = 16; 56 sw_regmap_config->val_bits = 32; 57 sw_regmap_config->reg_stride = 4; 58 sw_regmap_config->max_register = MT7530_CREV; 59 priv->regmap = devm_regmap_init_mmio(&pdev->dev, base_addr, sw_regmap_config); 60 if (IS_ERR(priv->regmap)) 61 return PTR_ERR(priv->regmap); 62 63 return dsa_register_switch(priv->ds); 64 } 65 66 static int 67 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 return 0; 75 } 76 77 static void mt7988_shutdown(struct platform_device *pdev) 78 { 79 struct mt7530_priv *priv = platform_get_drvdata(pdev); 80 81 if (!priv) 82 return; 83 84 dsa_switch_shutdown(priv->ds); 85 86 dev_set_drvdata(&pdev->dev, NULL); 87 } 88 89 static struct platform_driver mt7988_platform_driver = { 90 .probe = mt7988_probe, 91 .remove = mt7988_remove, 92 .shutdown = mt7988_shutdown, 93 .driver = { 94 .name = "mt7530-mmio", 95 .of_match_table = mt7988_of_match, 96 }, 97 }; 98 module_platform_driver(mt7988_platform_driver); 99 100 MODULE_AUTHOR("Daniel Golle <daniel@makrotopia.org>"); 101 MODULE_DESCRIPTION("Driver for Mediatek MT7530 Switch (MMIO)"); 102 MODULE_LICENSE("GPL"); 103