1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (C) 2019 MediaTek Inc.
3 *
4 * Author: Felix Fietkau <nbd@nbd.name>
5 * Lorenzo Bianconi <lorenzo@kernel.org>
6 * Sean Wang <sean.wang@mediatek.com>
7 */
8 #include <linux/kernel.h>
9 #include <linux/module.h>
10
11 #include "mt7615.h"
12 #include "mac.h"
13 #include "mcu.h"
14 #include "regs.h"
15
16 static int
mt7663u_mcu_send_message(struct mt76_dev * mdev,struct sk_buff * skb,int cmd,int * seq)17 mt7663u_mcu_send_message(struct mt76_dev *mdev, struct sk_buff *skb,
18 int cmd, int *seq)
19 {
20 struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76);
21 int ret, ep, len, pad;
22
23 mt7615_mcu_fill_msg(dev, skb, cmd, seq);
24 if (cmd != MCU_CMD(FW_SCATTER))
25 ep = MT_EP_OUT_INBAND_CMD;
26 else
27 ep = MT_EP_OUT_AC_BE;
28
29 len = skb->len;
30 put_unaligned_le32(len, skb_push(skb, sizeof(len)));
31 pad = round_up(skb->len, 4) + 4 - skb->len;
32 ret = mt76_skb_adjust_pad(skb, pad);
33 if (ret < 0)
34 goto out;
35
36 ret = mt76u_bulk_msg(&dev->mt76, skb->data, skb->len, NULL,
37 1000, ep);
38
39 out:
40 dev_kfree_skb(skb);
41
42 return ret;
43 }
44
mt7663u_mcu_power_on(struct mt7615_dev * dev)45 int mt7663u_mcu_power_on(struct mt7615_dev *dev)
46 {
47 int ret;
48
49 ret = mt76u_vendor_request(&dev->mt76, MT_VEND_POWER_ON,
50 USB_DIR_OUT | USB_TYPE_VENDOR,
51 0x0, 0x1, NULL, 0);
52 if (ret)
53 return ret;
54
55 if (!mt76_poll_msec(dev, MT_CONN_ON_MISC,
56 MT_TOP_MISC2_FW_PWR_ON,
57 FW_STATE_PWR_ON << 1, 500)) {
58 dev_err(dev->mt76.dev, "Timeout for power on\n");
59 ret = -EIO;
60 }
61
62 return 0;
63 }
64
mt7663u_mcu_init(struct mt7615_dev * dev)65 int mt7663u_mcu_init(struct mt7615_dev *dev)
66 {
67 static const struct mt76_mcu_ops mt7663u_mcu_ops = {
68 .headroom = MT_USB_HDR_SIZE + sizeof(struct mt7615_mcu_txd),
69 .tailroom = MT_USB_TAIL_SIZE,
70 .mcu_skb_send_msg = mt7663u_mcu_send_message,
71 .mcu_parse_response = mt7615_mcu_parse_response,
72 .mcu_restart = mt7615_mcu_restart,
73 };
74 int ret;
75
76 dev->mt76.mcu_ops = &mt7663u_mcu_ops,
77
78 mt76_set(dev, MT_UDMA_TX_QSEL, MT_FW_DL_EN);
79 if (test_and_clear_bit(MT76_STATE_POWER_OFF, &dev->mphy.state)) {
80 ret = mt7615_mcu_restart(&dev->mt76);
81 if (ret)
82 return ret;
83
84 if (!mt76_poll_msec(dev, MT_CONN_ON_MISC,
85 MT_TOP_MISC2_FW_PWR_ON, 0, 500))
86 return -EIO;
87
88 ret = mt7663u_mcu_power_on(dev);
89 if (ret)
90 return ret;
91 }
92
93 ret = __mt7663_load_firmware(dev);
94 if (ret)
95 return ret;
96
97 mt76_clear(dev, MT_UDMA_TX_QSEL, MT_FW_DL_EN);
98 set_bit(MT76_STATE_MCU_RUNNING, &dev->mphy.state);
99
100 return 0;
101 }
102