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

   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                 .drv_flags = MT_DRV_TX_ALIGNED4_SKBS |
  25                              MT_DRV_SW_RX_AIRTIME,
  26                 .survey_flags = SURVEY_INFO_TIME_TX,
  27                 .update_survey = mt76x02_update_channel,
  28                 .tx_prepare_skb = mt76x02_tx_prepare_skb,
  29                 .tx_complete_skb = mt76x02_tx_complete_skb,
  30                 .rx_skb = mt76x02_queue_rx_skb,
  31                 .rx_poll_complete = mt76x02_rx_poll_complete,
  32                 .sta_ps = mt76x02_sta_ps,
  33                 .sta_add = mt76x02_sta_add,
  34                 .sta_remove = mt76x02_sta_remove,
  35         };
  36         struct mt76x02_dev *dev;
  37         struct mt76_dev *mdev;
  38         int ret;
  39
  40         ret = pcim_enable_device(pdev);
  41         if (ret)
  42                 return ret;
  43
  44         ret = pcim_iomap_regions(pdev, BIT(0), pci_name(pdev));
  45         if (ret)
  46                 return ret;
  47
  48         pci_set_master(pdev);
  49
  50         ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
  51         if (ret)
  52                 return ret;
  53
  54         mdev = mt76_alloc_device(&pdev->dev, sizeof(*dev), &mt76x2_ops,
  55                                  &drv_ops);
  56         if (!mdev)
  57                 return -ENOMEM;
  58
  59         dev = container_of(mdev, struct mt76x02_dev, mt76);
  60         mt76_mmio_init(mdev, pcim_iomap_table(pdev)[0]);
  61         mt76x2_reset_wlan(dev, false);
  62
  63         mdev->rev = mt76_rr(dev, MT_ASIC_VERSION);
  64         dev_info(mdev->dev, "ASIC revision: %08x\n", mdev->rev);
  65
  66         ret = devm_request_irq(mdev->dev, pdev->irq, mt76x02_irq_handler,
  67                                IRQF_SHARED, KBUILD_MODNAME, dev);
  68         if (ret)
  69                 goto error;
  70
  71         ret = mt76x2_register_device(dev);
  72         if (ret)
  73                 goto error;
  74
  75         /* Fix up ASPM configuration */
  76
  77         /* RG_SSUSB_G1_CDR_BIR_LTR = 0x9 */
  78         mt76_rmw_field(dev, 0x15a10, 0x1f << 16, 0x9);
  79
  80         /* RG_SSUSB_G1_CDR_BIC_LTR = 0xf */
  81         mt76_rmw_field(dev, 0x15a0c, 0xf << 28, 0xf);
  82
  83         /* RG_SSUSB_CDR_BR_PE1D = 0x3 */
  84         mt76_rmw_field(dev, 0x15c58, 0x3 << 6, 0x3);
  85
  86         mt76_pci_disable_aspm(pdev);
  87
  88         return 0;
  89
  90 error:
  91         ieee80211_free_hw(mt76_hw(dev));
  92         return ret;
  93 }
  94
  95 static void
  96 mt76pci_remove(struct pci_dev *pdev)
  97 {
  98         struct mt76_dev *mdev = pci_get_drvdata(pdev);
  99         struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);
 100
 101         mt76_unregister_device(mdev);
 102         mt76x2_cleanup(dev);
 103         mt76_free_device(mdev);
 104 }
 105
 106 MODULE_DEVICE_TABLE(pci, mt76pci_device_table);
 107 MODULE_FIRMWARE(MT7662_FIRMWARE);
 108 MODULE_FIRMWARE(MT7662_ROM_PATCH);
 109 MODULE_LICENSE("Dual BSD/GPL");
 110
 111 static struct pci_driver mt76pci_driver = {
 112         .name           = KBUILD_MODNAME,
 113         .id_table       = mt76pci_device_table,
 114         .probe          = mt76pci_probe,
 115         .remove         = mt76pci_remove,
 116 };
 117
 118 module_pci_driver(mt76pci_driver);