summaryrefslogtreecommitdiff
path: root/drivers/net/wireless/mediatek/mt76/mt7615/usb.c
blob: 23a21338c46eb7d2da86b26da8c39cc933465681 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
// SPDX-License-Identifier: ISC
/* Copyright (C) 2019 MediaTek Inc.
 *
 * Author: Felix Fietkau <nbd@nbd.name>
 *	   Lorenzo Bianconi <lorenzo@kernel.org>
 *	   Sean Wang <sean.wang@mediatek.com>
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/usb.h>

#include "mt7615.h"
#include "mac.h"
#include "mcu.h"
#include "regs.h"

static const struct usb_device_id mt7615_device_table[] = {
	{ USB_DEVICE_AND_INTERFACE_INFO(0x0e8d, 0x7663, 0xff, 0xff, 0xff) },
	{ },
};

static void mt7663u_stop(struct ieee80211_hw *hw)
{
	struct mt7615_phy *phy = mt7615_hw_phy(hw);
	struct mt7615_dev *dev = hw->priv;

	clear_bit(MT76_STATE_RUNNING, &dev->mphy.state);
	del_timer_sync(&phy->roc_timer);
	cancel_work_sync(&phy->roc_work);
	cancel_delayed_work_sync(&phy->scan_work);
	cancel_delayed_work_sync(&phy->mac_work);
	mt76u_stop_tx(&dev->mt76);
}

static void mt7663u_cleanup(struct mt7615_dev *dev)
{
	clear_bit(MT76_STATE_INITIALIZED, &dev->mphy.state);
	mt76u_queues_deinit(&dev->mt76);
}

static void mt7663u_init_work(struct work_struct *work)
{
	struct mt7615_dev *dev;

	dev = container_of(work, struct mt7615_dev, mcu_work);
	if (mt7663u_mcu_init(dev))
		return;

	mt7615_mcu_set_eeprom(dev);
	mt7615_mac_init(dev);
	mt7615_phy_init(dev);
	mt7615_mcu_del_wtbl_all(dev);
	mt7615_check_offload_capability(dev);
}

static int mt7663u_probe(struct usb_interface *usb_intf,
			 const struct usb_device_id *id)
{
	static const struct mt76_driver_ops drv_ops = {
		.txwi_size = MT_USB_TXD_SIZE,
		.drv_flags = MT_DRV_RX_DMA_HDR | MT_DRV_HW_MGMT_TXQ,
		.tx_prepare_skb = mt7663_usb_sdio_tx_prepare_skb,
		.tx_complete_skb = mt7663_usb_sdio_tx_complete_skb,
		.tx_status_data = mt7663_usb_sdio_tx_status_data,
		.rx_skb = mt7615_queue_rx_skb,
		.sta_ps = mt7615_sta_ps,
		.sta_add = mt7615_mac_sta_add,
		.sta_remove = mt7615_mac_sta_remove,
		.update_survey = mt7615_update_channel,
	};
	struct usb_device *udev = interface_to_usbdev(usb_intf);
	struct ieee80211_ops *ops;
	struct mt7615_dev *dev;
	struct mt76_dev *mdev;
	int ret;

	ops = devm_kmemdup(&usb_intf->dev, &mt7615_ops, sizeof(mt7615_ops),
			   GFP_KERNEL);
	if (!ops)
		return -ENOMEM;

	ops->stop = mt7663u_stop;

	mdev = mt76_alloc_device(&usb_intf->dev, sizeof(*dev), ops, &drv_ops);
	if (!mdev)
		return -ENOMEM;

	dev = container_of(mdev, struct mt7615_dev, mt76);
	udev = usb_get_dev(udev);
	usb_reset_device(udev);

	usb_set_intfdata(usb_intf, dev);

	INIT_WORK(&dev->mcu_work, mt7663u_init_work);
	dev->reg_map = mt7663_usb_sdio_reg_map;
	dev->ops = ops;
	ret = mt76u_init(mdev, usb_intf, true);
	if (ret < 0)
		goto error;

	mdev->rev = (mt76_rr(dev, MT_HW_CHIPID) << 16) |
		    (mt76_rr(dev, MT_HW_REV) & 0xff);
	dev_dbg(mdev->dev, "ASIC revision: %04x\n", mdev->rev);

	if (mt76_poll_msec(dev, MT_CONN_ON_MISC, MT_TOP_MISC2_FW_PWR_ON,
			   FW_STATE_PWR_ON << 1, 500)) {
		dev_dbg(dev->mt76.dev, "Usb device already powered on\n");
		set_bit(MT76_STATE_POWER_OFF, &dev->mphy.state);
		goto alloc_queues;
	}

	ret = mt76u_vendor_request(&dev->mt76, MT_VEND_POWER_ON,
				   USB_DIR_OUT | USB_TYPE_VENDOR,
				   0x0, 0x1, NULL, 0);
	if (ret)
		goto error;

	if (!mt76_poll_msec(dev, MT_CONN_ON_MISC, MT_TOP_MISC2_FW_PWR_ON,
			    FW_STATE_PWR_ON << 1, 500)) {
		dev_err(dev->mt76.dev, "Timeout for power on\n");
		ret = -EIO;
		goto error;
	}

alloc_queues:
	ret = mt76u_alloc_mcu_queue(&dev->mt76);
	if (ret)
		goto error_free_q;

	ret = mt76u_alloc_queues(&dev->mt76);
	if (ret)
		goto error_free_q;

	ret = mt7663_usb_sdio_register_device(dev);
	if (ret)
		goto error_free_q;

	return 0;

error_free_q:
	mt76u_queues_deinit(&dev->mt76);
error:
	usb_set_intfdata(usb_intf, NULL);
	usb_put_dev(interface_to_usbdev(usb_intf));

	mt76_free_device(&dev->mt76);

	return ret;
}

static void mt7663u_disconnect(struct usb_interface *usb_intf)
{
	struct mt7615_dev *dev = usb_get_intfdata(usb_intf);

	if (!test_bit(MT76_STATE_INITIALIZED, &dev->mphy.state))
		return;

	ieee80211_unregister_hw(dev->mt76.hw);
	mt7663u_cleanup(dev);

	usb_set_intfdata(usb_intf, NULL);
	usb_put_dev(interface_to_usbdev(usb_intf));

	mt76_free_device(&dev->mt76);
}

#ifdef CONFIG_PM
static int mt7663u_suspend(struct usb_interface *intf, pm_message_t state)
{
	struct mt7615_dev *dev = usb_get_intfdata(intf);

	if (!test_bit(MT76_STATE_SUSPEND, &dev->mphy.state) &&
	    mt7615_firmware_offload(dev)) {
		int err;

		err = mt7615_mcu_set_hif_suspend(dev, true);
		if (err < 0)
			return err;
	}

	mt76u_stop_rx(&dev->mt76);

	mt76u_stop_tx(&dev->mt76);
	tasklet_kill(&dev->mt76.tx_tasklet);

	return 0;
}

static int mt7663u_resume(struct usb_interface *intf)
{
	struct mt7615_dev *dev = usb_get_intfdata(intf);
	int err;

	err = mt76u_vendor_request(&dev->mt76, MT_VEND_FEATURE_SET,
				   USB_DIR_OUT | USB_TYPE_VENDOR,
				   0x5, 0x0, NULL, 0);
	if (err)
		return err;

	err = mt76u_resume_rx(&dev->mt76);
	if (err < 0)
		return err;

	if (!test_bit(MT76_STATE_SUSPEND, &dev->mphy.state) &&
	    mt7615_firmware_offload(dev))
		err = mt7615_mcu_set_hif_suspend(dev, false);

	return err;
}
#endif /* CONFIG_PM */

MODULE_DEVICE_TABLE(usb, mt7615_device_table);
MODULE_FIRMWARE(MT7663_OFFLOAD_FIRMWARE_N9);
MODULE_FIRMWARE(MT7663_OFFLOAD_ROM_PATCH);
MODULE_FIRMWARE(MT7663_FIRMWARE_N9);
MODULE_FIRMWARE(MT7663_ROM_PATCH);

static struct usb_driver mt7663u_driver = {
	.name		= KBUILD_MODNAME,
	.id_table	= mt7615_device_table,
	.probe		= mt7663u_probe,
	.disconnect	= mt7663u_disconnect,
#ifdef CONFIG_PM
	.suspend	= mt7663u_suspend,
	.resume		= mt7663u_resume,
	.reset_resume	= mt7663u_resume,
#endif /* CONFIG_PM */
	.soft_unbind	= 1,
	.disable_hub_initiated_lpm = 1,
};
module_usb_driver(mt7663u_driver);

MODULE_AUTHOR("Sean Wang <sean.wang@mediatek.com>");
MODULE_AUTHOR("Lorenzo Bianconi <lorenzo@kernel.org>");
MODULE_LICENSE("Dual BSD/GPL");