This source file includes following definitions.
- __mt76_poll
- __mt76_poll_msec
- mt76_wcid_alloc
- mt76_get_min_avg_rssi
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6 #include <linux/module.h>
7 #include "mt76.h"
8
9 bool __mt76_poll(struct mt76_dev *dev, u32 offset, u32 mask, u32 val,
10 int timeout)
11 {
12 u32 cur;
13
14 timeout /= 10;
15 do {
16 cur = dev->bus->rr(dev, offset) & mask;
17 if (cur == val)
18 return true;
19
20 udelay(10);
21 } while (timeout-- > 0);
22
23 return false;
24 }
25 EXPORT_SYMBOL_GPL(__mt76_poll);
26
27 bool __mt76_poll_msec(struct mt76_dev *dev, u32 offset, u32 mask, u32 val,
28 int timeout)
29 {
30 u32 cur;
31
32 timeout /= 10;
33 do {
34 cur = dev->bus->rr(dev, offset) & mask;
35 if (cur == val)
36 return true;
37
38 usleep_range(10000, 20000);
39 } while (timeout-- > 0);
40
41 return false;
42 }
43 EXPORT_SYMBOL_GPL(__mt76_poll_msec);
44
45 int mt76_wcid_alloc(unsigned long *mask, int size)
46 {
47 int i, idx = 0, cur;
48
49 for (i = 0; i < size / BITS_PER_LONG; i++) {
50 idx = ffs(~mask[i]);
51 if (!idx)
52 continue;
53
54 idx--;
55 cur = i * BITS_PER_LONG + idx;
56 if (cur >= size)
57 break;
58
59 mask[i] |= BIT(idx);
60 return cur;
61 }
62
63 return -1;
64 }
65 EXPORT_SYMBOL_GPL(mt76_wcid_alloc);
66
67 int mt76_get_min_avg_rssi(struct mt76_dev *dev)
68 {
69 struct mt76_wcid *wcid;
70 int i, j, min_rssi = 0;
71 s8 cur_rssi;
72
73 local_bh_disable();
74 rcu_read_lock();
75
76 for (i = 0; i < ARRAY_SIZE(dev->wcid_mask); i++) {
77 unsigned long mask = dev->wcid_mask[i];
78
79 if (!mask)
80 continue;
81
82 for (j = i * BITS_PER_LONG; mask; j++, mask >>= 1) {
83 if (!(mask & 1))
84 continue;
85
86 wcid = rcu_dereference(dev->wcid[j]);
87 if (!wcid)
88 continue;
89
90 spin_lock(&dev->rx_lock);
91 if (wcid->inactive_count++ < 5)
92 cur_rssi = -ewma_signal_read(&wcid->rssi);
93 else
94 cur_rssi = 0;
95 spin_unlock(&dev->rx_lock);
96
97 if (cur_rssi < min_rssi)
98 min_rssi = cur_rssi;
99 }
100 }
101
102 rcu_read_unlock();
103 local_bh_enable();
104
105 return min_rssi;
106 }
107 EXPORT_SYMBOL_GPL(mt76_get_min_avg_rssi);
108
109 MODULE_LICENSE("Dual BSD/GPL");