1// SPDX-License-Identifier: ISC
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
9#include <linux/kernel.h>
10#include <linux/module.h>
11#include <linux/usb.h>
12
13#include "mt7615.h"
14#include "mac.h"
15#include "mcu.h"
16#include "regs.h"
17
18static const struct usb_device_id mt7615_device_table[] = {
19	{ USB_DEVICE_AND_INTERFACE_INFO(0x0e8d, 0x7663, 0xff, 0xff, 0xff) },
20	{ },
21};
22
23static void mt7663u_stop(struct ieee80211_hw *hw)
24{
25	struct mt7615_phy *phy = mt7615_hw_phy(hw);
26	struct mt7615_dev *dev = hw->priv;
27
28	clear_bit(MT76_STATE_RUNNING, &dev->mphy.state);
29	del_timer_sync(&phy->roc_timer);
30	cancel_work_sync(&phy->roc_work);
31	cancel_delayed_work_sync(&phy->scan_work);
32	cancel_delayed_work_sync(&phy->mac_work);
33	mt76u_stop_tx(&dev->mt76);
34}
35
36static void mt7663u_cleanup(struct mt7615_dev *dev)
37{
38	clear_bit(MT76_STATE_INITIALIZED, &dev->mphy.state);
39	mt76u_queues_deinit(&dev->mt76);
40}
41
42static void mt7663u_init_work(struct work_struct *work)
43{
44	struct mt7615_dev *dev;
45
46	dev = container_of(work, struct mt7615_dev, mcu_work);
47	if (mt7663u_mcu_init(dev))
48		return;
49
50	mt7615_mcu_set_eeprom(dev);
51	mt7615_mac_init(dev);
52	mt7615_phy_init(dev);
53	mt7615_mcu_del_wtbl_all(dev);
54	mt7615_check_offload_capability(dev);
55}
56
57static int mt7663u_probe(struct usb_interface *usb_intf,
58			 const struct usb_device_id *id)
59{
60	static const struct mt76_driver_ops drv_ops = {
61		.txwi_size = MT_USB_TXD_SIZE,
62		.drv_flags = MT_DRV_RX_DMA_HDR | MT_DRV_HW_MGMT_TXQ,
63		.tx_prepare_skb = mt7663_usb_sdio_tx_prepare_skb,
64		.tx_complete_skb = mt7663_usb_sdio_tx_complete_skb,
65		.tx_status_data = mt7663_usb_sdio_tx_status_data,
66		.rx_skb = mt7615_queue_rx_skb,
67		.sta_ps = mt7615_sta_ps,
68		.sta_add = mt7615_mac_sta_add,
69		.sta_remove = mt7615_mac_sta_remove,
70		.update_survey = mt7615_update_channel,
71	};
72	struct usb_device *udev = interface_to_usbdev(usb_intf);
73	struct ieee80211_ops *ops;
74	struct mt7615_dev *dev;
75	struct mt76_dev *mdev;
76	int ret;
77
78	ops = devm_kmemdup(&usb_intf->dev, &mt7615_ops, sizeof(mt7615_ops),
79			   GFP_KERNEL);
80	if (!ops)
81		return -ENOMEM;
82
83	ops->stop = mt7663u_stop;
84
85	mdev = mt76_alloc_device(&usb_intf->dev, sizeof(*dev), ops, &drv_ops);
86	if (!mdev)
87		return -ENOMEM;
88
89	dev = container_of(mdev, struct mt7615_dev, mt76);
90	udev = usb_get_dev(udev);
91	usb_reset_device(udev);
92
93	usb_set_intfdata(usb_intf, dev);
94
95	INIT_WORK(&dev->mcu_work, mt7663u_init_work);
96	dev->reg_map = mt7663_usb_sdio_reg_map;
97	dev->ops = ops;
98	ret = mt76u_init(mdev, usb_intf, true);
99	if (ret < 0)
100		goto error;
101
102	mdev->rev = (mt76_rr(dev, MT_HW_CHIPID) << 16) |
103		    (mt76_rr(dev, MT_HW_REV) & 0xff);
104	dev_dbg(mdev->dev, "ASIC revision: %04x\n", mdev->rev);
105
106	if (mt76_poll_msec(dev, MT_CONN_ON_MISC, MT_TOP_MISC2_FW_PWR_ON,
107			   FW_STATE_PWR_ON << 1, 500)) {
108		dev_dbg(dev->mt76.dev, "Usb device already powered on\n");
109		set_bit(MT76_STATE_POWER_OFF, &dev->mphy.state);
110		goto alloc_queues;
111	}
112
113	ret = mt76u_vendor_request(&dev->mt76, MT_VEND_POWER_ON,
114				   USB_DIR_OUT | USB_TYPE_VENDOR,
115				   0x0, 0x1, NULL, 0);
116	if (ret)
117		goto error;
118
119	if (!mt76_poll_msec(dev, MT_CONN_ON_MISC, MT_TOP_MISC2_FW_PWR_ON,
120			    FW_STATE_PWR_ON << 1, 500)) {
121		dev_err(dev->mt76.dev, "Timeout for power on\n");
122		ret = -EIO;
123		goto error;
124	}
125
126alloc_queues:
127	ret = mt76u_alloc_mcu_queue(&dev->mt76);
128	if (ret)
129		goto error_free_q;
130
131	ret = mt76u_alloc_queues(&dev->mt76);
132	if (ret)
133		goto error_free_q;
134
135	ret = mt7663_usb_sdio_register_device(dev);
136	if (ret)
137		goto error_free_q;
138
139	return 0;
140
141error_free_q:
142	mt76u_queues_deinit(&dev->mt76);
143error:
144	usb_set_intfdata(usb_intf, NULL);
145	usb_put_dev(interface_to_usbdev(usb_intf));
146
147	mt76_free_device(&dev->mt76);
148
149	return ret;
150}
151
152static void mt7663u_disconnect(struct usb_interface *usb_intf)
153{
154	struct mt7615_dev *dev = usb_get_intfdata(usb_intf);
155
156	if (!test_bit(MT76_STATE_INITIALIZED, &dev->mphy.state))
157		return;
158
159	ieee80211_unregister_hw(dev->mt76.hw);
160	mt7663u_cleanup(dev);
161
162	usb_set_intfdata(usb_intf, NULL);
163	usb_put_dev(interface_to_usbdev(usb_intf));
164
165	mt76_free_device(&dev->mt76);
166}
167
168#ifdef CONFIG_PM
169static int mt7663u_suspend(struct usb_interface *intf, pm_message_t state)
170{
171	struct mt7615_dev *dev = usb_get_intfdata(intf);
172
173	if (!test_bit(MT76_STATE_SUSPEND, &dev->mphy.state) &&
174	    mt7615_firmware_offload(dev)) {
175		int err;
176
177		err = mt7615_mcu_set_hif_suspend(dev, true);
178		if (err < 0)
179			return err;
180	}
181
182	mt76u_stop_rx(&dev->mt76);
183	mt76u_stop_tx(&dev->mt76);
184
185	return 0;
186}
187
188static int mt7663u_resume(struct usb_interface *intf)
189{
190	struct mt7615_dev *dev = usb_get_intfdata(intf);
191	int err;
192
193	err = mt76u_vendor_request(&dev->mt76, MT_VEND_FEATURE_SET,
194				   USB_DIR_OUT | USB_TYPE_VENDOR,
195				   0x5, 0x0, NULL, 0);
196	if (err)
197		return err;
198
199	err = mt76u_resume_rx(&dev->mt76);
200	if (err < 0)
201		return err;
202
203	if (!test_bit(MT76_STATE_SUSPEND, &dev->mphy.state) &&
204	    mt7615_firmware_offload(dev))
205		err = mt7615_mcu_set_hif_suspend(dev, false);
206
207	return err;
208}
209#endif /* CONFIG_PM */
210
211MODULE_DEVICE_TABLE(usb, mt7615_device_table);
212MODULE_FIRMWARE(MT7663_OFFLOAD_FIRMWARE_N9);
213MODULE_FIRMWARE(MT7663_OFFLOAD_ROM_PATCH);
214MODULE_FIRMWARE(MT7663_FIRMWARE_N9);
215MODULE_FIRMWARE(MT7663_ROM_PATCH);
216
217static struct usb_driver mt7663u_driver = {
218	.name		= KBUILD_MODNAME,
219	.id_table	= mt7615_device_table,
220	.probe		= mt7663u_probe,
221	.disconnect	= mt7663u_disconnect,
222#ifdef CONFIG_PM
223	.suspend	= mt7663u_suspend,
224	.resume		= mt7663u_resume,
225	.reset_resume	= mt7663u_resume,
226#endif /* CONFIG_PM */
227	.soft_unbind	= 1,
228	.disable_hub_initiated_lpm = 1,
229};
230module_usb_driver(mt7663u_driver);
231
232MODULE_AUTHOR("Sean Wang <sean.wang@mediatek.com>");
233MODULE_AUTHOR("Lorenzo Bianconi <lorenzo@kernel.org>");
234MODULE_LICENSE("Dual BSD/GPL");
235