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1// SPDX-License-Identifier: ISC2/*3 * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>4 * Copyright (C) 2018 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>5 */6 7#include "mt76x2.h"8 9void mt76x2_mac_stop(struct mt76x02_dev *dev, bool force)10{11 bool stopped = false;12 u32 rts_cfg;13 int i;14 15 mt76_clear(dev, MT_TXOP_CTRL_CFG, MT_TXOP_ED_CCA_EN);16 mt76_clear(dev, MT_TXOP_HLDR_ET, MT_TXOP_HLDR_TX40M_BLK_EN);17 18 mt76_wr(dev, MT_MAC_SYS_CTRL, 0);19 20 rts_cfg = mt76_rr(dev, MT_TX_RTS_CFG);21 mt76_wr(dev, MT_TX_RTS_CFG, rts_cfg & ~MT_TX_RTS_CFG_RETRY_LIMIT);22 23 /* Wait for MAC to become idle */24 for (i = 0; i < 300; i++) {25 if ((mt76_rr(dev, MT_MAC_STATUS) &26 (MT_MAC_STATUS_RX | MT_MAC_STATUS_TX)) ||27 mt76_rr(dev, MT_BBP(IBI, 12))) {28 udelay(1);29 continue;30 }31 32 stopped = true;33 break;34 }35 36 if (force && !stopped) {37 mt76_set(dev, MT_BBP(CORE, 4), BIT(1));38 mt76_clear(dev, MT_BBP(CORE, 4), BIT(1));39 40 mt76_set(dev, MT_BBP(CORE, 4), BIT(0));41 mt76_clear(dev, MT_BBP(CORE, 4), BIT(0));42 }43 44 mt76_wr(dev, MT_TX_RTS_CFG, rts_cfg);45}46EXPORT_SYMBOL_GPL(mt76x2_mac_stop);47