2 * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
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.
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.
17 #include <linux/module.h>
20 bool __mt76_poll(struct mt76_dev *dev, u32 offset, u32 mask, u32 val,
27 cur = dev->bus->rr(dev, offset) & mask;
32 } while (timeout-- > 0);
36 EXPORT_SYMBOL_GPL(__mt76_poll);
38 bool __mt76_poll_msec(struct mt76_dev *dev, u32 offset, u32 mask, u32 val,
45 cur = dev->bus->rr(dev, offset) & mask;
49 usleep_range(10000, 20000);
50 } while (timeout-- > 0);
54 EXPORT_SYMBOL_GPL(__mt76_poll_msec);
56 int mt76_wcid_alloc(unsigned long *mask, int size)
60 for (i = 0; i < size / BITS_PER_LONG; i++) {
66 cur = i * BITS_PER_LONG + idx;
76 EXPORT_SYMBOL_GPL(mt76_wcid_alloc);
78 int mt76_get_min_avg_rssi(struct mt76_dev *dev)
80 struct mt76_wcid *wcid;
81 int i, j, min_rssi = 0;
87 for (i = 0; i < ARRAY_SIZE(dev->wcid_mask); i++) {
88 unsigned long mask = dev->wcid_mask[i];
93 for (j = i * BITS_PER_LONG; mask; j++, mask >>= 1) {
97 wcid = rcu_dereference(dev->wcid[j]);
101 spin_lock(&dev->rx_lock);
102 if (wcid->inactive_count++ < 5)
103 cur_rssi = -ewma_signal_read(&wcid->rssi);
106 spin_unlock(&dev->rx_lock);
108 if (cur_rssi < min_rssi)
118 EXPORT_SYMBOL_GPL(mt76_get_min_avg_rssi);
120 MODULE_LICENSE("Dual BSD/GPL");