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

   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
   9 static 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->mphy.mac_work,
  19                                      MT_MAC_WORK_INTERVAL);
  20         set_bit(MT76_STATE_RUNNING, &dev->mphy.state);
  21
  22         return 0;
  23 }
  24
  25 static void mt76x2u_stop(struct ieee80211_hw *hw, bool suspend)
  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
  34 static int
  35 mt76x2u_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
  64 static int
  65 mt76x2u_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                 struct mt76_phy *mphy = &dev->mphy;
  82
  83                 dev->txpower_conf = hw->conf.power_level * 2;
  84                 dev->txpower_conf = mt76_get_sar_power(mphy,
  85                                                        mphy->chandef.chan,
  86                                                        dev->txpower_conf);
  87                 /* convert to per-chain power for 2x2 devices */
  88                 dev->txpower_conf -= 6;
  89
  90                 if (test_bit(MT76_STATE_RUNNING, &mphy->state))
  91                         mt76x2_phy_set_txpower(dev);
  92         }
  93
  94         mutex_unlock(&dev->mt76.mutex);
  95
  96         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
  97                 ieee80211_stop_queues(hw);
  98                 err = mt76x2u_set_channel(dev, &hw->conf.chandef);
  99                 ieee80211_wake_queues(hw);
 100         }
 101
 102         return err;
 103 }
 104
 105 const struct ieee80211_ops mt76x2u_ops = {
 106         .add_chanctx = ieee80211_emulate_add_chanctx,
 107         .remove_chanctx = ieee80211_emulate_remove_chanctx,
 108         .change_chanctx = ieee80211_emulate_change_chanctx,
 109         .switch_vif_chanctx = ieee80211_emulate_switch_vif_chanctx,
 110         .tx = mt76x02_tx,
 111         .start = mt76x2u_start,
 112         .stop = mt76x2u_stop,
 113         .add_interface = mt76x02_add_interface,
 114         .remove_interface = mt76x02_remove_interface,
 115         .sta_state = mt76_sta_state,
 116         .sta_pre_rcu_remove = mt76_sta_pre_rcu_remove,
 117         .set_key = mt76x02_set_key,
 118         .ampdu_action = mt76x02_ampdu_action,
 119         .config = mt76x2u_config,
 120         .wake_tx_queue = mt76_wake_tx_queue,
 121         .bss_info_changed = mt76x02_bss_info_changed,
 122         .configure_filter = mt76x02_configure_filter,
 123         .conf_tx = mt76x02_conf_tx,
 124         .sw_scan_start = mt76_sw_scan,
 125         .sw_scan_complete = mt76x02_sw_scan_complete,
 126         .sta_rate_tbl_update = mt76x02_sta_rate_tbl_update,
 127         .get_txpower = mt76_get_txpower,
 128         .get_survey = mt76_get_survey,
 129         .set_tim = mt76_set_tim,
 130         .release_buffered_frames = mt76_release_buffered_frames,
 131         .get_antenna = mt76_get_antenna,
 132         .set_sar_specs = mt76x2_set_sar_specs,
 133 };