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 = "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 void 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
  74 static void mt7988_shutdown(struct platform_device *pdev)
  75 {
  76         struct mt7530_priv *priv = platform_get_drvdata(pdev);
  77
  78         if (!priv)
  79                 return;
  80
  81         dsa_switch_shutdown(priv->ds);
  82
  83         dev_set_drvdata(&pdev->dev, NULL);
  84 }
  85
  86 static struct platform_driver mt7988_platform_driver = {
  87         .probe  = mt7988_probe,
  88         .remove_new = mt7988_remove,
  89         .shutdown = mt7988_shutdown,
  90         .driver = {
  91                 .name = "mt7530-mmio",
  92                 .of_match_table = mt7988_of_match,
  93         },
  94 };
  95 module_platform_driver(mt7988_platform_driver);
  96
  97 MODULE_AUTHOR("Daniel Golle <daniel@makrotopia.org>");
  98 MODULE_DESCRIPTION("Driver for Mediatek MT7530 Switch (MMIO)");
  99 MODULE_LICENSE("GPL");