47 lines
1.1 KiB
C
47 lines
1.1 KiB
C
// SPDX-License-Identifier: ISC
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/*
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* Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
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* Copyright (C) 2018 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
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*/
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#include "mt76x2.h"
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void mt76x2_mac_stop(struct mt76x02_dev *dev, bool force)
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{
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bool stopped = false;
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u32 rts_cfg;
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int i;
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mt76_clear(dev, MT_TXOP_CTRL_CFG, MT_TXOP_ED_CCA_EN);
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mt76_clear(dev, MT_TXOP_HLDR_ET, MT_TXOP_HLDR_TX40M_BLK_EN);
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mt76_wr(dev, MT_MAC_SYS_CTRL, 0);
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rts_cfg = mt76_rr(dev, MT_TX_RTS_CFG);
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mt76_wr(dev, MT_TX_RTS_CFG, rts_cfg & ~MT_TX_RTS_CFG_RETRY_LIMIT);
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/* Wait for MAC to become idle */
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for (i = 0; i < 300; i++) {
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if ((mt76_rr(dev, MT_MAC_STATUS) &
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(MT_MAC_STATUS_RX | MT_MAC_STATUS_TX)) ||
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mt76_rr(dev, MT_BBP(IBI, 12))) {
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udelay(1);
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continue;
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}
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stopped = true;
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break;
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}
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if (force && !stopped) {
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mt76_set(dev, MT_BBP(CORE, 4), BIT(1));
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mt76_clear(dev, MT_BBP(CORE, 4), BIT(1));
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mt76_set(dev, MT_BBP(CORE, 4), BIT(0));
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mt76_clear(dev, MT_BBP(CORE, 4), BIT(0));
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}
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mt76_wr(dev, MT_TX_RTS_CFG, rts_cfg);
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}
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EXPORT_SYMBOL_GPL(mt76x2_mac_stop);
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