Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next
[linux-2.6-microblaze.git] / drivers / net / wireless / mediatek / mt76 / mt76x2 / usb_main.c
1 /*
2  * Copyright (C) 2018 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
3  *
4  * Permission to use, copy, modify, and/or distribute this software for any
5  * purpose with or without fee is hereby granted, provided that the above
6  * copyright notice and this permission notice appear in all copies.
7  *
8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15  */
16
17 #include "mt76x2u.h"
18
19 static int mt76x2u_start(struct ieee80211_hw *hw)
20 {
21         struct mt76x02_dev *dev = hw->priv;
22         int ret;
23
24         mutex_lock(&dev->mt76.mutex);
25
26         ret = mt76x2u_mac_start(dev);
27         if (ret)
28                 goto out;
29
30         ieee80211_queue_delayed_work(mt76_hw(dev), &dev->mac_work,
31                                      MT_CALIBRATE_INTERVAL);
32         set_bit(MT76_STATE_RUNNING, &dev->mt76.state);
33
34 out:
35         mutex_unlock(&dev->mt76.mutex);
36         return ret;
37 }
38
39 static void mt76x2u_stop(struct ieee80211_hw *hw)
40 {
41         struct mt76x02_dev *dev = hw->priv;
42
43         mutex_lock(&dev->mt76.mutex);
44         clear_bit(MT76_STATE_RUNNING, &dev->mt76.state);
45         mt76x2u_stop_hw(dev);
46         mutex_unlock(&dev->mt76.mutex);
47 }
48
49 static int mt76x2u_add_interface(struct ieee80211_hw *hw,
50                                  struct ieee80211_vif *vif)
51 {
52         struct mt76x02_dev *dev = hw->priv;
53         unsigned int idx = 8;
54
55         if (!ether_addr_equal(dev->mt76.macaddr, vif->addr))
56                 mt76x02_mac_setaddr(dev, vif->addr);
57
58         mt76x02_vif_init(dev, vif, idx);
59         return 0;
60 }
61
62 static int
63 mt76x2u_set_channel(struct mt76x02_dev *dev,
64                     struct cfg80211_chan_def *chandef)
65 {
66         int err;
67
68         cancel_delayed_work_sync(&dev->cal_work);
69         set_bit(MT76_RESET, &dev->mt76.state);
70
71         mt76_set_channel(&dev->mt76);
72
73         mt76_clear(dev, MT_TXOP_CTRL_CFG, BIT(20));
74         mt76_clear(dev, MT_TXOP_HLDR_ET, BIT(1));
75         mt76x2_mac_stop(dev, false);
76
77         err = mt76x2u_phy_set_channel(dev, chandef);
78
79         mt76x2u_mac_resume(dev);
80
81         clear_bit(MT76_RESET, &dev->mt76.state);
82         mt76_txq_schedule_all(&dev->mt76);
83
84         return err;
85 }
86
87 static int
88 mt76x2u_config(struct ieee80211_hw *hw, u32 changed)
89 {
90         struct mt76x02_dev *dev = hw->priv;
91         int err = 0;
92
93         mutex_lock(&dev->mt76.mutex);
94
95         if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
96                 if (!(hw->conf.flags & IEEE80211_CONF_MONITOR))
97                         dev->mt76.rxfilter |= MT_RX_FILTR_CFG_PROMISC;
98                 else
99                         dev->mt76.rxfilter &= ~MT_RX_FILTR_CFG_PROMISC;
100                 mt76_wr(dev, MT_RX_FILTR_CFG, dev->mt76.rxfilter);
101         }
102
103         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
104                 ieee80211_stop_queues(hw);
105                 err = mt76x2u_set_channel(dev, &hw->conf.chandef);
106                 ieee80211_wake_queues(hw);
107         }
108
109         if (changed & IEEE80211_CONF_CHANGE_POWER) {
110                 dev->mt76.txpower_conf = hw->conf.power_level * 2;
111
112                 /* convert to per-chain power for 2x2 devices */
113                 dev->mt76.txpower_conf -= 6;
114
115                 if (test_bit(MT76_STATE_RUNNING, &dev->mt76.state))
116                         mt76x2_phy_set_txpower(dev);
117         }
118
119         mutex_unlock(&dev->mt76.mutex);
120
121         return err;
122 }
123
124 const struct ieee80211_ops mt76x2u_ops = {
125         .tx = mt76x02_tx,
126         .start = mt76x2u_start,
127         .stop = mt76x2u_stop,
128         .add_interface = mt76x2u_add_interface,
129         .remove_interface = mt76x02_remove_interface,
130         .sta_state = mt76_sta_state,
131         .set_key = mt76x02_set_key,
132         .ampdu_action = mt76x02_ampdu_action,
133         .config = mt76x2u_config,
134         .wake_tx_queue = mt76_wake_tx_queue,
135         .bss_info_changed = mt76x02_bss_info_changed,
136         .configure_filter = mt76x02_configure_filter,
137         .conf_tx = mt76x02_conf_tx,
138         .sw_scan_start = mt76x02_sw_scan,
139         .sw_scan_complete = mt76x02_sw_scan_complete,
140         .sta_rate_tbl_update = mt76x02_sta_rate_tbl_update,
141         .get_txpower = mt76x02_get_txpower,
142 };