| // 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); |
