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
18 static const struct usb_device_id mt7615_device_table[] = {
19 { USB_DEVICE_AND_INTERFACE_INFO(0x0e8d, 0x7663, 0xff, 0xff, 0xff) },
20 { },
21 };
22
mt7663u_stop(struct ieee80211_hw * hw)23 static 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
mt7663u_cleanup(struct mt7615_dev * dev)36 static 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
mt7663u_init_work(struct work_struct * work)42 static 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
mt7663u_probe(struct usb_interface * usb_intf,const struct usb_device_id * id)57 static 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
126 alloc_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
141 error_free_q:
142 mt76u_queues_deinit(&dev->mt76);
143 error:
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
mt7663u_disconnect(struct usb_interface * usb_intf)152 static 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
mt7663u_suspend(struct usb_interface * intf,pm_message_t state)169 static 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
mt7663u_resume(struct usb_interface * intf)188 static 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
211 MODULE_DEVICE_TABLE(usb, mt7615_device_table);
212 MODULE_FIRMWARE(MT7663_OFFLOAD_FIRMWARE_N9);
213 MODULE_FIRMWARE(MT7663_OFFLOAD_ROM_PATCH);
214 MODULE_FIRMWARE(MT7663_FIRMWARE_N9);
215 MODULE_FIRMWARE(MT7663_ROM_PATCH);
216
217 static 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 };
230 module_usb_driver(mt7663u_driver);
231
232 MODULE_AUTHOR("Sean Wang <sean.wang@mediatek.com>");
233 MODULE_AUTHOR("Lorenzo Bianconi <lorenzo@kernel.org>");
234 MODULE_LICENSE("Dual BSD/GPL");
235
