drivers/net/dsa/mt7530-mmio.c

   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 = 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");