| developer | 0f312e8 | 2022-11-01 12:31:52 +0800 | [diff] [blame] | 1 | // SPDX-License-Identifier: ISC |
| 2 | /* |
| 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 | |
| 9 | void 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 | } |
| 46 | EXPORT_SYMBOL_GPL(mt76x2_mac_stop); |