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