linux/drivers/net/wireless/mediatek/mt76/mt76x2/usb_main.c
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   1// SPDX-License-Identifier: ISC
   2/*
   3 * Copyright (C) 2018 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
   4 */
   5
   6#include "mt76x2u.h"
   7#include "../mt76x02_usb.h"
   8
   9static int mt76x2u_start(struct ieee80211_hw *hw)
  10{
  11        struct mt76x02_dev *dev = hw->priv;
  12        int ret;
  13
  14        ret = mt76x02u_mac_start(dev);
  15        if (ret)
  16                return ret;
  17
  18        ieee80211_queue_delayed_work(mt76_hw(dev), &dev->mt76.mac_work,
  19                                     MT_MAC_WORK_INTERVAL);
  20        set_bit(MT76_STATE_RUNNING, &dev->mphy.state);
  21
  22        return 0;
  23}
  24
  25static void mt76x2u_stop(struct ieee80211_hw *hw)
  26{
  27        struct mt76x02_dev *dev = hw->priv;
  28
  29        clear_bit(MT76_STATE_RUNNING, &dev->mphy.state);
  30        mt76u_stop_tx(&dev->mt76);
  31        mt76x2u_stop_hw(dev);
  32}
  33
  34static int
  35mt76x2u_set_channel(struct mt76x02_dev *dev,
  36                    struct cfg80211_chan_def *chandef)
  37{
  38        int err;
  39
  40        cancel_delayed_work_sync(&dev->cal_work);
  41        mt76x02_pre_tbtt_enable(dev, false);
  42
  43        mutex_lock(&dev->mt76.mutex);
  44        set_bit(MT76_RESET, &dev->mphy.state);
  45
  46        mt76_set_channel(&dev->mphy);
  47
  48        mt76x2_mac_stop(dev, false);
  49
  50        err = mt76x2u_phy_set_channel(dev, chandef);
  51
  52        mt76x02_mac_cc_reset(dev);
  53        mt76x2_mac_resume(dev);
  54
  55        clear_bit(MT76_RESET, &dev->mphy.state);
  56        mutex_unlock(&dev->mt76.mutex);
  57
  58        mt76x02_pre_tbtt_enable(dev, true);
  59        mt76_txq_schedule_all(&dev->mphy);
  60
  61        return err;
  62}
  63
  64static int
  65mt76x2u_config(struct ieee80211_hw *hw, u32 changed)
  66{
  67        struct mt76x02_dev *dev = hw->priv;
  68        int err = 0;
  69
  70        mutex_lock(&dev->mt76.mutex);
  71
  72        if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
  73                if (!(hw->conf.flags & IEEE80211_CONF_MONITOR))
  74                        dev->mt76.rxfilter |= MT_RX_FILTR_CFG_PROMISC;
  75                else
  76                        dev->mt76.rxfilter &= ~MT_RX_FILTR_CFG_PROMISC;
  77                mt76_wr(dev, MT_RX_FILTR_CFG, dev->mt76.rxfilter);
  78        }
  79
  80        if (changed & IEEE80211_CONF_CHANGE_POWER) {
  81                dev->txpower_conf = hw->conf.power_level * 2;
  82
  83                /* convert to per-chain power for 2x2 devices */
  84                dev->txpower_conf -= 6;
  85
  86                if (test_bit(MT76_STATE_RUNNING, &dev->mphy.state))
  87                        mt76x2_phy_set_txpower(dev);
  88        }
  89
  90        mutex_unlock(&dev->mt76.mutex);
  91
  92        if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
  93                ieee80211_stop_queues(hw);
  94                err = mt76x2u_set_channel(dev, &hw->conf.chandef);
  95                ieee80211_wake_queues(hw);
  96        }
  97
  98        return err;
  99}
 100
 101const struct ieee80211_ops mt76x2u_ops = {
 102        .tx = mt76x02_tx,
 103        .start = mt76x2u_start,
 104        .stop = mt76x2u_stop,
 105        .add_interface = mt76x02_add_interface,
 106        .remove_interface = mt76x02_remove_interface,
 107        .sta_state = mt76_sta_state,
 108        .sta_pre_rcu_remove = mt76_sta_pre_rcu_remove,
 109        .set_key = mt76x02_set_key,
 110        .ampdu_action = mt76x02_ampdu_action,
 111        .config = mt76x2u_config,
 112        .wake_tx_queue = mt76_wake_tx_queue,
 113        .bss_info_changed = mt76x02_bss_info_changed,
 114        .configure_filter = mt76x02_configure_filter,
 115        .conf_tx = mt76x02_conf_tx,
 116        .sw_scan_start = mt76_sw_scan,
 117        .sw_scan_complete = mt76x02_sw_scan_complete,
 118        .sta_rate_tbl_update = mt76x02_sta_rate_tbl_update,
 119        .get_txpower = mt76_get_txpower,
 120        .get_survey = mt76_get_survey,
 121        .set_tim = mt76_set_tim,
 122        .release_buffered_frames = mt76_release_buffered_frames,
 123        .get_antenna = mt76_get_antenna,
 124};
 125