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MediaTek has asked to switch from the ISC license to BSD-3-Clause-Clear, in order to improve clarity and the legal integrity of the code. The BSD-3-Clause license includes the "no endorsement" clause, which is important for protecting the reputation of the original authors and contributors by preventing unauthorized use of their names for endorsement purposes. This clause is absent in the BSD-2-Clause license, which is more permissive but lacks this specific protection. This change also cleans up the license of some Kconfig/Makefile files, which were accidentally marked as GPL. The GPL 2.0 remains in use on mt76x0, as well as two source files in mt7615 for which the license situation still needs to be clarified. Link: https://patch.msgid.link/20251008104250.46292-2-nbd@nbd.name Signed-off-by: Felix Fietkau <nbd@nbd.name>
139 lines
2.4 KiB
C
139 lines
2.4 KiB
C
// SPDX-License-Identifier: BSD-3-Clause-Clear
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/*
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* Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
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*/
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#include <linux/module.h>
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#include "mt76.h"
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bool __mt76_poll(struct mt76_dev *dev, u32 offset, u32 mask, u32 val,
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int timeout)
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{
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u32 cur;
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timeout /= 10;
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do {
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cur = __mt76_rr(dev, offset) & mask;
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if (cur == val)
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return true;
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udelay(10);
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} while (timeout-- > 0);
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return false;
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}
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EXPORT_SYMBOL_GPL(__mt76_poll);
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bool ____mt76_poll_msec(struct mt76_dev *dev, u32 offset, u32 mask, u32 val,
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int timeout, int tick)
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{
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u32 cur;
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timeout /= tick;
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do {
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cur = __mt76_rr(dev, offset) & mask;
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if (cur == val)
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return true;
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usleep_range(1000 * tick, 2000 * tick);
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} while (timeout-- > 0);
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return false;
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}
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EXPORT_SYMBOL_GPL(____mt76_poll_msec);
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int mt76_wcid_alloc(u32 *mask, int size)
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{
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int i, idx = 0, cur;
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for (i = 0; i < DIV_ROUND_UP(size, 32); i++) {
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idx = ffs(~mask[i]);
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if (!idx)
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continue;
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idx--;
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cur = i * 32 + idx;
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if (cur >= size)
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break;
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mask[i] |= BIT(idx);
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return cur;
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}
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return -1;
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}
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EXPORT_SYMBOL_GPL(mt76_wcid_alloc);
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int mt76_get_min_avg_rssi(struct mt76_dev *dev, u8 phy_idx)
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{
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struct mt76_wcid *wcid;
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int i, j, min_rssi = 0;
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s8 cur_rssi;
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local_bh_disable();
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rcu_read_lock();
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for (i = 0; i < ARRAY_SIZE(dev->wcid_mask); i++) {
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u32 mask = dev->wcid_mask[i];
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if (!mask)
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continue;
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for (j = i * 32; mask; j++, mask >>= 1) {
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if (!(mask & 1))
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continue;
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wcid = __mt76_wcid_ptr(dev, j);
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if (!wcid || wcid->phy_idx != phy_idx)
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continue;
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spin_lock(&dev->rx_lock);
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if (wcid->inactive_count++ < 5)
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cur_rssi = -ewma_signal_read(&wcid->rssi);
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else
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cur_rssi = 0;
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spin_unlock(&dev->rx_lock);
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if (cur_rssi < min_rssi)
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min_rssi = cur_rssi;
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}
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}
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rcu_read_unlock();
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local_bh_enable();
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return min_rssi;
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}
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EXPORT_SYMBOL_GPL(mt76_get_min_avg_rssi);
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int __mt76_worker_fn(void *ptr)
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{
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struct mt76_worker *w = ptr;
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while (!kthread_should_stop()) {
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set_current_state(TASK_INTERRUPTIBLE);
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if (kthread_should_park()) {
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kthread_parkme();
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continue;
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}
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if (!test_and_clear_bit(MT76_WORKER_SCHEDULED, &w->state)) {
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schedule();
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continue;
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}
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set_bit(MT76_WORKER_RUNNING, &w->state);
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set_current_state(TASK_RUNNING);
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w->fn(w);
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cond_resched();
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clear_bit(MT76_WORKER_RUNNING, &w->state);
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}
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return 0;
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}
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EXPORT_SYMBOL_GPL(__mt76_worker_fn);
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MODULE_DESCRIPTION("MediaTek MT76x helpers");
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MODULE_LICENSE("Dual BSD/GPL");
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