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 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 = mt76_connac_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 	int i, err = 0;
65 
66 	for (i = 0; i < MT7921_DRV_OWN_RETRY_COUNT; i++) {
67 		mt76_wr(dev, MT_CONN_ON_LPCTL, PCIE_LPCR_HOST_CLR_OWN);
68 		if (mt76_poll_msec(dev, MT_CONN_ON_LPCTL,
69 				   PCIE_LPCR_HOST_OWN_SYNC, 0, 50))
70 			break;
71 	}
72 
73 	if (i == MT7921_DRV_OWN_RETRY_COUNT) {
74 		dev_err(dev->mt76.dev, "driver own failed\n");
75 		err = -EIO;
76 	}
77 
78 	return err;
79 }
80 
mt7921e_mcu_drv_pmctrl(struct mt7921_dev * dev)81 int mt7921e_mcu_drv_pmctrl(struct mt7921_dev *dev)
82 {
83 	struct mt76_phy *mphy = &dev->mt76.phy;
84 	struct mt76_connac_pm *pm = &dev->pm;
85 	int err;
86 
87 	err = __mt7921e_mcu_drv_pmctrl(dev);
88 	if (err < 0)
89 		goto out;
90 
91 	mt7921_wpdma_reinit_cond(dev);
92 	clear_bit(MT76_STATE_PM, &mphy->state);
93 
94 	pm->stats.last_wake_event = jiffies;
95 	pm->stats.doze_time += pm->stats.last_wake_event -
96 			       pm->stats.last_doze_event;
97 out:
98 	return err;
99 }
100 
mt7921e_mcu_fw_pmctrl(struct mt7921_dev * dev)101 int mt7921e_mcu_fw_pmctrl(struct mt7921_dev *dev)
102 {
103 	struct mt76_phy *mphy = &dev->mt76.phy;
104 	struct mt76_connac_pm *pm = &dev->pm;
105 	int i;
106 
107 	for (i = 0; i < MT7921_DRV_OWN_RETRY_COUNT; i++) {
108 		mt76_wr(dev, MT_CONN_ON_LPCTL, PCIE_LPCR_HOST_SET_OWN);
109 		if (mt76_poll_msec(dev, MT_CONN_ON_LPCTL,
110 				   PCIE_LPCR_HOST_OWN_SYNC, 4, 50))
111 			break;
112 	}
113 
114 	if (i == MT7921_DRV_OWN_RETRY_COUNT) {
115 		dev_err(dev->mt76.dev, "firmware own failed\n");
116 		clear_bit(MT76_STATE_PM, &mphy->state);
117 		return -EIO;
118 	}
119 
120 	pm->stats.last_doze_event = jiffies;
121 	pm->stats.awake_time += pm->stats.last_doze_event -
122 				pm->stats.last_wake_event;
123 
124 	return 0;
125 }
126