1 // SPDX-License-Identifier: ISC
2 /* Copyright (C) 2021 MediaTek Inc. */
3
4 #include "mt7921.h"
5 #include "mcu.h"
6
mt7921e_driver_own(struct mt7921_dev * dev)7 static int mt7921e_driver_own(struct mt7921_dev *dev)
8 {
9 u32 reg = mt7921_reg_map_l1(dev, MT_TOP_LPCR_HOST_BAND0);
10
11 mt76_wr(dev, reg, MT_TOP_LPCR_HOST_DRV_OWN);
12 if (!mt76_poll_msec(dev, reg, MT_TOP_LPCR_HOST_FW_OWN,
13 0, 500)) {
14 dev_err(dev->mt76.dev, "Timeout for driver own\n");
15 return -EIO;
16 }
17
18 return 0;
19 }
20
21 static int
mt7921_mcu_send_message(struct mt76_dev * mdev,struct sk_buff * skb,int cmd,int * seq)22 mt7921_mcu_send_message(struct mt76_dev *mdev, struct sk_buff *skb,
23 int cmd, int *seq)
24 {
25 struct mt7921_dev *dev = container_of(mdev, struct mt7921_dev, mt76);
26 enum mt76_mcuq_id txq = MT_MCUQ_WM;
27 int ret;
28
29 ret = mt7921_mcu_fill_message(mdev, skb, cmd, seq);
30 if (ret)
31 return ret;
32
33 if (cmd == MCU_CMD_FW_SCATTER)
34 txq = MT_MCUQ_FWDL;
35
36 return mt76_tx_queue_skb_raw(dev, mdev->q_mcu[txq], skb, 0);
37 }
38
mt7921e_mcu_init(struct mt7921_dev * dev)39 int mt7921e_mcu_init(struct mt7921_dev *dev)
40 {
41 static const struct mt76_mcu_ops mt7921_mcu_ops = {
42 .headroom = sizeof(struct mt7921_mcu_txd),
43 .mcu_skb_send_msg = mt7921_mcu_send_message,
44 .mcu_parse_response = mt7921_mcu_parse_response,
45 .mcu_restart = mt7921_mcu_restart,
46 };
47 int err;
48
49 dev->mt76.mcu_ops = &mt7921_mcu_ops;
50
51 err = mt7921e_driver_own(dev);
52 if (err)
53 return err;
54
55 err = mt7921_run_firmware(dev);
56
57 mt76_queue_tx_cleanup(dev, dev->mt76.q_mcu[MT_MCUQ_FWDL], false);
58
59 return err;
60 }
61
mt7921e_mcu_drv_pmctrl(struct mt7921_dev * dev)62 int mt7921e_mcu_drv_pmctrl(struct mt7921_dev *dev)
63 {
64 struct mt76_phy *mphy = &dev->mt76.phy;
65 struct mt76_connac_pm *pm = &dev->pm;
66 int i, err = 0;
67
68 for (i = 0; i < MT7921_DRV_OWN_RETRY_COUNT; i++) {
69 mt76_wr(dev, MT_CONN_ON_LPCTL, PCIE_LPCR_HOST_CLR_OWN);
70 if (mt76_poll_msec(dev, MT_CONN_ON_LPCTL,
71 PCIE_LPCR_HOST_OWN_SYNC, 0, 50))
72 break;
73 }
74
75 if (i == MT7921_DRV_OWN_RETRY_COUNT) {
76 dev_err(dev->mt76.dev, "driver own failed\n");
77 err = -EIO;
78 goto out;
79 }
80
81 mt7921_wpdma_reinit_cond(dev);
82 clear_bit(MT76_STATE_PM, &mphy->state);
83
84 pm->stats.last_wake_event = jiffies;
85 pm->stats.doze_time += pm->stats.last_wake_event -
86 pm->stats.last_doze_event;
87 out:
88 return err;
89 }
90
mt7921e_mcu_fw_pmctrl(struct mt7921_dev * dev)91 int mt7921e_mcu_fw_pmctrl(struct mt7921_dev *dev)
92 {
93 struct mt76_phy *mphy = &dev->mt76.phy;
94 struct mt76_connac_pm *pm = &dev->pm;
95 int i, err = 0;
96
97 for (i = 0; i < MT7921_DRV_OWN_RETRY_COUNT; i++) {
98 mt76_wr(dev, MT_CONN_ON_LPCTL, PCIE_LPCR_HOST_SET_OWN);
99 if (mt76_poll_msec(dev, MT_CONN_ON_LPCTL,
100 PCIE_LPCR_HOST_OWN_SYNC, 4, 50))
101 break;
102 }
103
104 if (i == MT7921_DRV_OWN_RETRY_COUNT) {
105 dev_err(dev->mt76.dev, "firmware own failed\n");
106 clear_bit(MT76_STATE_PM, &mphy->state);
107 err = -EIO;
108 }
109
110 pm->stats.last_doze_event = jiffies;
111 pm->stats.awake_time += pm->stats.last_doze_event -
112 pm->stats.last_wake_event;
113
114 return err;
115 }
116