root/drivers/net/wireless/mediatek/mt76/mt76x2/pci.c

DEFINITIONS

1. mt76pci_probe
2. mt76pci_remove

   1 // SPDX-License-Identifier: ISC
   2 /*
   3  * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
   4  */
   5 
   6 #include <linux/kernel.h>
   7 #include <linux/module.h>
   8 #include <linux/pci.h>
   9 
  10 #include "mt76x2.h"
  11 
  12 static const struct pci_device_id mt76pci_device_table[] = {
  13         { PCI_DEVICE(0x14c3, 0x7662) },
  14         { PCI_DEVICE(0x14c3, 0x7612) },
  15         { PCI_DEVICE(0x14c3, 0x7602) },
  16         { },
  17 };
  18 
  19 static int
  20 mt76pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
  21 {
  22         static const struct mt76_driver_ops drv_ops = {
  23                 .txwi_size = sizeof(struct mt76x02_txwi),
  24                 .tx_aligned4_skbs = true,
  25                 .update_survey = mt76x02_update_channel,
  26                 .tx_prepare_skb = mt76x02_tx_prepare_skb,
  27                 .tx_complete_skb = mt76x02_tx_complete_skb,
  28                 .rx_skb = mt76x02_queue_rx_skb,
  29                 .rx_poll_complete = mt76x02_rx_poll_complete,
  30                 .sta_ps = mt76x02_sta_ps,
  31                 .sta_add = mt76x02_sta_add,
  32                 .sta_remove = mt76x02_sta_remove,
  33         };
  34         struct mt76x02_dev *dev;
  35         struct mt76_dev *mdev;
  36         int ret;
  37 
  38         ret = pcim_enable_device(pdev);
  39         if (ret)
  40                 return ret;
  41 
  42         ret = pcim_iomap_regions(pdev, BIT(0), pci_name(pdev));
  43         if (ret)
  44                 return ret;
  45 
  46         pci_set_master(pdev);
  47 
  48         ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
  49         if (ret)
  50                 return ret;
  51 
  52         mdev = mt76_alloc_device(&pdev->dev, sizeof(*dev), &mt76x2_ops,
  53                                  &drv_ops);
  54         if (!mdev)
  55                 return -ENOMEM;
  56 
  57         dev = container_of(mdev, struct mt76x02_dev, mt76);
  58         mt76_mmio_init(mdev, pcim_iomap_table(pdev)[0]);
  59         mt76x2_reset_wlan(dev, false);
  60 
  61         mdev->rev = mt76_rr(dev, MT_ASIC_VERSION);
  62         dev_info(mdev->dev, "ASIC revision: %08x\n", mdev->rev);
  63 
  64         ret = devm_request_irq(mdev->dev, pdev->irq, mt76x02_irq_handler,
  65                                IRQF_SHARED, KBUILD_MODNAME, dev);
  66         if (ret)
  67                 goto error;
  68 
  69         ret = mt76x2_register_device(dev);
  70         if (ret)
  71                 goto error;
  72 
  73         /* Fix up ASPM configuration */
  74 
  75         /* RG_SSUSB_G1_CDR_BIR_LTR = 0x9 */
  76         mt76_rmw_field(dev, 0x15a10, 0x1f << 16, 0x9);
  77 
  78         /* RG_SSUSB_G1_CDR_BIC_LTR = 0xf */
  79         mt76_rmw_field(dev, 0x15a0c, 0xf << 28, 0xf);
  80 
  81         /* RG_SSUSB_CDR_BR_PE1D = 0x3 */
  82         mt76_rmw_field(dev, 0x15c58, 0x3 << 6, 0x3);
  83 
  84         mt76_pci_disable_aspm(pdev);
  85 
  86         return 0;
  87 
  88 error:
  89         ieee80211_free_hw(mt76_hw(dev));
  90         return ret;
  91 }
  92 
  93 static void
  94 mt76pci_remove(struct pci_dev *pdev)
  95 {
  96         struct mt76_dev *mdev = pci_get_drvdata(pdev);
  97         struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);
  98 
  99         mt76_unregister_device(mdev);
 100         mt76x2_cleanup(dev);
 101         mt76_free_device(mdev);
 102 }
 103 
 104 MODULE_DEVICE_TABLE(pci, mt76pci_device_table);
 105 MODULE_FIRMWARE(MT7662_FIRMWARE);
 106 MODULE_FIRMWARE(MT7662_ROM_PATCH);
 107 MODULE_LICENSE("Dual BSD/GPL");
 108 
 109 static struct pci_driver mt76pci_driver = {
 110         .name           = KBUILD_MODNAME,
 111         .id_table       = mt76pci_device_table,
 112         .probe          = mt76pci_probe,
 113         .remove         = mt76pci_remove,
 114 };
 115 
 116 module_pci_driver(mt76pci_driver);