343 lines
8.3 KiB
C
343 lines
8.3 KiB
C
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// SPDX-License-Identifier: ISC
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/* Copyright (C) 2021 MediaTek Inc.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/iopoll.h>
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#include <linux/module.h>
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#include <linux/mmc/host.h>
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#include <linux/mmc/sdio_ids.h>
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#include <linux/mmc/sdio_func.h>
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#include "mt7921.h"
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#include "../sdio.h"
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#include "mac.h"
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#include "mcu.h"
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static const struct sdio_device_id mt7921s_table[] = {
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{ SDIO_DEVICE(SDIO_VENDOR_ID_MEDIATEK, 0x7901),
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.driver_data = (kernel_ulong_t)MT7921_FIRMWARE_WM },
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{ } /* Terminating entry */
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};
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static void mt7921s_txrx_worker(struct mt76_worker *w)
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{
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struct mt76_sdio *sdio = container_of(w, struct mt76_sdio,
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txrx_worker);
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struct mt76_dev *mdev = container_of(sdio, struct mt76_dev, sdio);
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struct mt7921_dev *dev = container_of(mdev, struct mt7921_dev, mt76);
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if (!mt76_connac_pm_ref(&dev->mphy, &dev->pm)) {
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queue_work(mdev->wq, &dev->pm.wake_work);
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return;
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}
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mt76s_txrx_worker(sdio);
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mt76_connac_pm_unref(&dev->mphy, &dev->pm);
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}
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static void mt7921s_unregister_device(struct mt7921_dev *dev)
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{
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struct mt76_connac_pm *pm = &dev->pm;
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cancel_work_sync(&dev->init_work);
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mt76_unregister_device(&dev->mt76);
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cancel_delayed_work_sync(&pm->ps_work);
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cancel_work_sync(&pm->wake_work);
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mt76s_deinit(&dev->mt76);
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mt7921s_wfsys_reset(dev);
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skb_queue_purge(&dev->mt76.mcu.res_q);
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mt76_free_device(&dev->mt76);
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}
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static int mt7921s_parse_intr(struct mt76_dev *dev, struct mt76s_intr *intr)
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{
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struct mt76_sdio *sdio = &dev->sdio;
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struct mt7921_sdio_intr *irq_data = sdio->intr_data;
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int i, err;
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sdio_claim_host(sdio->func);
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err = sdio_readsb(sdio->func, irq_data, MCR_WHISR, sizeof(*irq_data));
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sdio_release_host(sdio->func);
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if (err < 0)
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return err;
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if (irq_data->rx.num[0] > 16 ||
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irq_data->rx.num[1] > 128)
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return -EINVAL;
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intr->isr = irq_data->isr;
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intr->rec_mb = irq_data->rec_mb;
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intr->tx.wtqcr = irq_data->tx.wtqcr;
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intr->rx.num = irq_data->rx.num;
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for (i = 0; i < 2 ; i++) {
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if (!i)
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intr->rx.len[0] = irq_data->rx.len0;
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else
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intr->rx.len[1] = irq_data->rx.len1;
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}
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return 0;
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}
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static int mt7921s_probe(struct sdio_func *func,
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const struct sdio_device_id *id)
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{
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static const struct mt76_driver_ops drv_ops = {
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.txwi_size = MT_SDIO_TXD_SIZE,
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.drv_flags = MT_DRV_AMSDU_OFFLOAD,
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.survey_flags = SURVEY_INFO_TIME_TX |
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SURVEY_INFO_TIME_RX |
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SURVEY_INFO_TIME_BSS_RX,
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.tx_prepare_skb = mt7921_usb_sdio_tx_prepare_skb,
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.tx_complete_skb = mt7921_usb_sdio_tx_complete_skb,
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.tx_status_data = mt7921_usb_sdio_tx_status_data,
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.rx_skb = mt7921_queue_rx_skb,
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.rx_check = mt7921_rx_check,
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.sta_ps = mt7921_sta_ps,
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.sta_add = mt7921_mac_sta_add,
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.sta_assoc = mt7921_mac_sta_assoc,
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.sta_remove = mt7921_mac_sta_remove,
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.update_survey = mt7921_update_channel,
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};
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static const struct mt76_bus_ops mt7921s_ops = {
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.rr = mt76s_rr,
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.rmw = mt76s_rmw,
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.wr = mt76s_wr,
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.write_copy = mt76s_write_copy,
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.read_copy = mt76s_read_copy,
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.wr_rp = mt76s_wr_rp,
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.rd_rp = mt76s_rd_rp,
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.type = MT76_BUS_SDIO,
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};
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static const struct mt7921_hif_ops mt7921_sdio_ops = {
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.init_reset = mt7921s_init_reset,
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.reset = mt7921s_mac_reset,
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.mcu_init = mt7921s_mcu_init,
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.drv_own = mt7921s_mcu_drv_pmctrl,
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.fw_own = mt7921s_mcu_fw_pmctrl,
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};
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struct ieee80211_ops *ops;
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struct mt7921_dev *dev;
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struct mt76_dev *mdev;
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u8 features;
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int ret;
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features = mt7921_check_offload_capability(&func->dev, (const char *)
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id->driver_data);
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ops = devm_kmemdup(&func->dev, &mt7921_ops, sizeof(mt7921_ops),
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GFP_KERNEL);
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if (!ops)
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return -ENOMEM;
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if (!(features & MT7921_FW_CAP_CNM)) {
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ops->remain_on_channel = NULL;
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ops->cancel_remain_on_channel = NULL;
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ops->add_chanctx = NULL;
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ops->remove_chanctx = NULL;
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ops->change_chanctx = NULL;
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ops->assign_vif_chanctx = NULL;
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ops->unassign_vif_chanctx = NULL;
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ops->mgd_prepare_tx = NULL;
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ops->mgd_complete_tx = NULL;
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}
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mdev = mt76_alloc_device(&func->dev, sizeof(*dev), ops, &drv_ops);
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if (!mdev)
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return -ENOMEM;
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dev = container_of(mdev, struct mt7921_dev, mt76);
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dev->fw_features = features;
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dev->hif_ops = &mt7921_sdio_ops;
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sdio_set_drvdata(func, dev);
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ret = mt76s_init(mdev, func, &mt7921s_ops);
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if (ret < 0)
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goto error;
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ret = mt76s_hw_init(mdev, func, MT76_CONNAC2_SDIO);
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if (ret)
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goto error;
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mdev->rev = (mt76_rr(dev, MT_HW_CHIPID) << 16) |
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(mt76_rr(dev, MT_HW_REV) & 0xff);
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dev_dbg(mdev->dev, "ASIC revision: %04x\n", mdev->rev);
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mdev->sdio.parse_irq = mt7921s_parse_intr;
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mdev->sdio.intr_data = devm_kmalloc(mdev->dev,
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sizeof(struct mt7921_sdio_intr),
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GFP_KERNEL);
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if (!mdev->sdio.intr_data) {
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ret = -ENOMEM;
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goto error;
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}
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ret = mt76s_alloc_rx_queue(mdev, MT_RXQ_MAIN);
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if (ret)
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goto error;
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ret = mt76s_alloc_rx_queue(mdev, MT_RXQ_MCU);
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if (ret)
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goto error;
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ret = mt76s_alloc_tx(mdev);
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if (ret)
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goto error;
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ret = mt76_worker_setup(mt76_hw(dev), &mdev->sdio.txrx_worker,
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mt7921s_txrx_worker, "sdio-txrx");
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if (ret)
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goto error;
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sched_set_fifo_low(mdev->sdio.txrx_worker.task);
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ret = mt7921_register_device(dev);
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if (ret)
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goto error;
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return 0;
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error:
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mt76s_deinit(&dev->mt76);
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mt76_free_device(&dev->mt76);
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return ret;
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}
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static void mt7921s_remove(struct sdio_func *func)
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{
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struct mt7921_dev *dev = sdio_get_drvdata(func);
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mt7921s_unregister_device(dev);
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}
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static int mt7921s_suspend(struct device *__dev)
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{
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struct sdio_func *func = dev_to_sdio_func(__dev);
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struct mt7921_dev *dev = sdio_get_drvdata(func);
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struct mt76_connac_pm *pm = &dev->pm;
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struct mt76_dev *mdev = &dev->mt76;
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int err;
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pm->suspended = true;
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set_bit(MT76_STATE_SUSPEND, &mdev->phy.state);
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flush_work(&dev->reset_work);
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cancel_delayed_work_sync(&pm->ps_work);
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cancel_work_sync(&pm->wake_work);
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err = mt7921_mcu_drv_pmctrl(dev);
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if (err < 0)
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goto restore_suspend;
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/* always enable deep sleep during suspend to reduce
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* power consumption
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*/
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mt76_connac_mcu_set_deep_sleep(mdev, true);
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mt76_txq_schedule_all(&dev->mphy);
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mt76_worker_disable(&mdev->tx_worker);
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mt76_worker_disable(&mdev->sdio.status_worker);
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cancel_work_sync(&mdev->sdio.stat_work);
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clear_bit(MT76_READING_STATS, &dev->mphy.state);
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mt76_tx_status_check(mdev, true);
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mt76_worker_schedule(&mdev->sdio.txrx_worker);
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wait_event_timeout(dev->mt76.sdio.wait,
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mt76s_txqs_empty(&dev->mt76), 5 * HZ);
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/* It is supposed that SDIO bus is idle at the point */
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err = mt76_connac_mcu_set_hif_suspend(mdev, true);
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if (err)
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goto restore_worker;
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mt76_worker_disable(&mdev->sdio.txrx_worker);
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mt76_worker_disable(&mdev->sdio.net_worker);
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err = mt7921_mcu_fw_pmctrl(dev);
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if (err)
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goto restore_txrx_worker;
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sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
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return 0;
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restore_txrx_worker:
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mt76_worker_enable(&mdev->sdio.net_worker);
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mt76_worker_enable(&mdev->sdio.txrx_worker);
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mt76_connac_mcu_set_hif_suspend(mdev, false);
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restore_worker:
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mt76_worker_enable(&mdev->tx_worker);
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mt76_worker_enable(&mdev->sdio.status_worker);
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if (!pm->ds_enable)
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mt76_connac_mcu_set_deep_sleep(mdev, false);
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restore_suspend:
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clear_bit(MT76_STATE_SUSPEND, &mdev->phy.state);
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pm->suspended = false;
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if (err < 0)
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mt7921_reset(&dev->mt76);
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return err;
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}
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static int mt7921s_resume(struct device *__dev)
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{
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struct sdio_func *func = dev_to_sdio_func(__dev);
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struct mt7921_dev *dev = sdio_get_drvdata(func);
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struct mt76_connac_pm *pm = &dev->pm;
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struct mt76_dev *mdev = &dev->mt76;
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int err;
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clear_bit(MT76_STATE_SUSPEND, &mdev->phy.state);
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err = mt7921_mcu_drv_pmctrl(dev);
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if (err < 0)
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goto failed;
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mt76_worker_enable(&mdev->tx_worker);
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mt76_worker_enable(&mdev->sdio.txrx_worker);
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mt76_worker_enable(&mdev->sdio.status_worker);
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mt76_worker_enable(&mdev->sdio.net_worker);
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/* restore previous ds setting */
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if (!pm->ds_enable)
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mt76_connac_mcu_set_deep_sleep(mdev, false);
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err = mt76_connac_mcu_set_hif_suspend(mdev, false);
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failed:
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pm->suspended = false;
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if (err < 0)
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mt7921_reset(&dev->mt76);
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return err;
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}
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MODULE_DEVICE_TABLE(sdio, mt7921s_table);
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MODULE_FIRMWARE(MT7921_FIRMWARE_WM);
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MODULE_FIRMWARE(MT7921_ROM_PATCH);
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static DEFINE_SIMPLE_DEV_PM_OPS(mt7921s_pm_ops, mt7921s_suspend, mt7921s_resume);
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static struct sdio_driver mt7921s_driver = {
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.name = KBUILD_MODNAME,
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.probe = mt7921s_probe,
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.remove = mt7921s_remove,
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.id_table = mt7921s_table,
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.drv.pm = pm_sleep_ptr(&mt7921s_pm_ops),
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};
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module_sdio_driver(mt7921s_driver);
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MODULE_AUTHOR("Sean Wang <sean.wang@mediatek.com>");
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MODULE_LICENSE("Dual BSD/GPL");
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