diff options
Diffstat (limited to 'drivers/net/wireless/mediatek/mt76/mt76x2/pci.c')
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/mt76x2/pci.c | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mt76x2/pci.c b/drivers/net/wireless/mediatek/mt76/mt76x2/pci.c new file mode 100644 index 000000000..df85ebc6e --- /dev/null +++ b/drivers/net/wireless/mediatek/mt76/mt76x2/pci.c @@ -0,0 +1,181 @@ +// SPDX-License-Identifier: ISC +/* + * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name> + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/pci.h> + +#include "mt76x2.h" + +static const struct pci_device_id mt76x2e_device_table[] = { + { PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x7662) }, + { PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x7612) }, + { PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x7602) }, + { }, +}; + +static int +mt76x2e_probe(struct pci_dev *pdev, const struct pci_device_id *id) +{ + static const struct mt76_driver_ops drv_ops = { + .txwi_size = sizeof(struct mt76x02_txwi), + .drv_flags = MT_DRV_TX_ALIGNED4_SKBS | + MT_DRV_SW_RX_AIRTIME, + .survey_flags = SURVEY_INFO_TIME_TX, + .update_survey = mt76x02_update_channel, + .tx_prepare_skb = mt76x02_tx_prepare_skb, + .tx_complete_skb = mt76x02_tx_complete_skb, + .rx_skb = mt76x02_queue_rx_skb, + .rx_poll_complete = mt76x02_rx_poll_complete, + .sta_ps = mt76x02_sta_ps, + .sta_add = mt76x02_sta_add, + .sta_remove = mt76x02_sta_remove, + }; + struct mt76x02_dev *dev; + struct mt76_dev *mdev; + int ret; + + ret = pcim_enable_device(pdev); + if (ret) + return ret; + + ret = pcim_iomap_regions(pdev, BIT(0), pci_name(pdev)); + if (ret) + return ret; + + pci_set_master(pdev); + + ret = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); + if (ret) + return ret; + + mdev = mt76_alloc_device(&pdev->dev, sizeof(*dev), &mt76x2_ops, + &drv_ops); + if (!mdev) + return -ENOMEM; + + dev = container_of(mdev, struct mt76x02_dev, mt76); + mt76_mmio_init(mdev, pcim_iomap_table(pdev)[0]); + mt76x2_reset_wlan(dev, false); + + mdev->rev = mt76_rr(dev, MT_ASIC_VERSION); + dev_info(mdev->dev, "ASIC revision: %08x\n", mdev->rev); + + mt76_wr(dev, MT_INT_MASK_CSR, 0); + + ret = devm_request_irq(mdev->dev, pdev->irq, mt76x02_irq_handler, + IRQF_SHARED, KBUILD_MODNAME, dev); + if (ret) + goto error; + + ret = mt76x2_register_device(dev); + if (ret) + goto error; + + /* Fix up ASPM configuration */ + + /* RG_SSUSB_G1_CDR_BIR_LTR = 0x9 */ + mt76_rmw_field(dev, 0x15a10, 0x1f << 16, 0x9); + + /* RG_SSUSB_G1_CDR_BIC_LTR = 0xf */ + mt76_rmw_field(dev, 0x15a0c, 0xfU << 28, 0xf); + + /* RG_SSUSB_CDR_BR_PE1D = 0x3 */ + mt76_rmw_field(dev, 0x15c58, 0x3 << 6, 0x3); + + mt76_pci_disable_aspm(pdev); + + return 0; + +error: + mt76_free_device(&dev->mt76); + + return ret; +} + +static void +mt76x2e_remove(struct pci_dev *pdev) +{ + struct mt76_dev *mdev = pci_get_drvdata(pdev); + struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76); + + mt76_unregister_device(mdev); + mt76x2_cleanup(dev); + mt76_free_device(mdev); +} + +static int __maybe_unused +mt76x2e_suspend(struct pci_dev *pdev, pm_message_t state) +{ + struct mt76_dev *mdev = pci_get_drvdata(pdev); + int i, err; + + napi_disable(&mdev->tx_napi); + tasklet_kill(&mdev->pre_tbtt_tasklet); + mt76_worker_disable(&mdev->tx_worker); + + mt76_for_each_q_rx(mdev, i) + napi_disable(&mdev->napi[i]); + + pci_enable_wake(pdev, pci_choose_state(pdev, state), true); + pci_save_state(pdev); + err = pci_set_power_state(pdev, pci_choose_state(pdev, state)); + if (err) + goto restore; + + return 0; + +restore: + mt76_for_each_q_rx(mdev, i) + napi_enable(&mdev->napi[i]); + napi_enable(&mdev->tx_napi); + + return err; +} + +static int __maybe_unused +mt76x2e_resume(struct pci_dev *pdev) +{ + struct mt76_dev *mdev = pci_get_drvdata(pdev); + struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76); + int i, err; + + err = pci_set_power_state(pdev, PCI_D0); + if (err) + return err; + + pci_restore_state(pdev); + + mt76_worker_enable(&mdev->tx_worker); + + local_bh_disable(); + mt76_for_each_q_rx(mdev, i) { + napi_enable(&mdev->napi[i]); + napi_schedule(&mdev->napi[i]); + } + napi_enable(&mdev->tx_napi); + napi_schedule(&mdev->tx_napi); + local_bh_enable(); + + return mt76x2_resume_device(dev); +} + +MODULE_DEVICE_TABLE(pci, mt76x2e_device_table); +MODULE_FIRMWARE(MT7662_FIRMWARE); +MODULE_FIRMWARE(MT7662_ROM_PATCH); +MODULE_LICENSE("Dual BSD/GPL"); + +static struct pci_driver mt76pci_driver = { + .name = KBUILD_MODNAME, + .id_table = mt76x2e_device_table, + .probe = mt76x2e_probe, + .remove = mt76x2e_remove, +#ifdef CONFIG_PM + .suspend = mt76x2e_suspend, + .resume = mt76x2e_resume, +#endif /* CONFIG_PM */ +}; + +module_pci_driver(mt76pci_driver); |