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 { USB_DEVICE_AND_INTERFACE_INFO(0x043e, 0x310c, 0xff, 0xff, 0xff) },
21 { },
22 };
23
mt7663u_rr(struct mt76_dev * dev,u32 addr)24 static u32 mt7663u_rr(struct mt76_dev *dev, u32 addr)
25 {
26 u32 ret;
27
28 mutex_lock(&dev->usb.usb_ctrl_mtx);
29 ret = ___mt76u_rr(dev, MT_VEND_READ_EXT,
30 USB_DIR_IN | USB_TYPE_VENDOR, addr);
31 mutex_unlock(&dev->usb.usb_ctrl_mtx);
32
33 return ret;
34 }
35
mt7663u_wr(struct mt76_dev * dev,u32 addr,u32 val)36 static void mt7663u_wr(struct mt76_dev *dev, u32 addr, u32 val)
37 {
38 mutex_lock(&dev->usb.usb_ctrl_mtx);
39 ___mt76u_wr(dev, MT_VEND_WRITE_EXT,
40 USB_DIR_OUT | USB_TYPE_VENDOR, addr, val);
41 mutex_unlock(&dev->usb.usb_ctrl_mtx);
42 }
43
mt7663u_rmw(struct mt76_dev * dev,u32 addr,u32 mask,u32 val)44 static u32 mt7663u_rmw(struct mt76_dev *dev, u32 addr,
45 u32 mask, u32 val)
46 {
47 mutex_lock(&dev->usb.usb_ctrl_mtx);
48 val |= ___mt76u_rr(dev, MT_VEND_READ_EXT,
49 USB_DIR_IN | USB_TYPE_VENDOR, addr) & ~mask;
50 ___mt76u_wr(dev, MT_VEND_WRITE_EXT,
51 USB_DIR_OUT | USB_TYPE_VENDOR, addr, val);
52 mutex_unlock(&dev->usb.usb_ctrl_mtx);
53
54 return val;
55 }
56
mt7663u_copy(struct mt76_dev * dev,u32 offset,const void * data,int len)57 static void mt7663u_copy(struct mt76_dev *dev, u32 offset,
58 const void *data, int len)
59 {
60 struct mt76_usb *usb = &dev->usb;
61 int ret, i = 0, batch_len;
62 const u8 *val = data;
63
64 len = round_up(len, 4);
65
66 mutex_lock(&usb->usb_ctrl_mtx);
67 while (i < len) {
68 batch_len = min_t(int, usb->data_len, len - i);
69 memcpy(usb->data, val + i, batch_len);
70 ret = __mt76u_vendor_request(dev, MT_VEND_WRITE_EXT,
71 USB_DIR_OUT | USB_TYPE_VENDOR,
72 (offset + i) >> 16, offset + i,
73 usb->data, batch_len);
74 if (ret < 0)
75 break;
76
77 i += batch_len;
78 }
79 mutex_unlock(&usb->usb_ctrl_mtx);
80 }
81
mt7663u_stop(struct ieee80211_hw * hw,bool suspend)82 static void mt7663u_stop(struct ieee80211_hw *hw, bool suspend)
83 {
84 struct mt7615_phy *phy = mt7615_hw_phy(hw);
85 struct mt7615_dev *dev = hw->priv;
86
87 clear_bit(MT76_STATE_RUNNING, &dev->mphy.state);
88 del_timer_sync(&phy->roc_timer);
89 cancel_work_sync(&phy->roc_work);
90 cancel_delayed_work_sync(&phy->scan_work);
91 cancel_delayed_work_sync(&phy->mt76->mac_work);
92 mt76u_stop_tx(&dev->mt76);
93 }
94
mt7663u_cleanup(struct mt7615_dev * dev)95 static void mt7663u_cleanup(struct mt7615_dev *dev)
96 {
97 clear_bit(MT76_STATE_INITIALIZED, &dev->mphy.state);
98 mt76u_queues_deinit(&dev->mt76);
99 }
100
mt7663u_init_work(struct work_struct * work)101 static void mt7663u_init_work(struct work_struct *work)
102 {
103 struct mt7615_dev *dev;
104
105 dev = container_of(work, struct mt7615_dev, mcu_work);
106 if (mt7663u_mcu_init(dev))
107 return;
108
109 mt7615_init_work(dev);
110 }
111
mt7663u_probe(struct usb_interface * usb_intf,const struct usb_device_id * id)112 static int mt7663u_probe(struct usb_interface *usb_intf,
113 const struct usb_device_id *id)
114 {
115 static const struct mt76_driver_ops drv_ops = {
116 .txwi_size = MT_USB_TXD_SIZE,
117 .drv_flags = MT_DRV_RX_DMA_HDR | MT_DRV_HW_MGMT_TXQ,
118 .tx_prepare_skb = mt7663_usb_sdio_tx_prepare_skb,
119 .tx_complete_skb = mt7663_usb_sdio_tx_complete_skb,
120 .tx_status_data = mt7663_usb_sdio_tx_status_data,
121 .rx_skb = mt7615_queue_rx_skb,
122 .rx_check = mt7615_rx_check,
123 .sta_add = mt7615_mac_sta_add,
124 .sta_remove = mt7615_mac_sta_remove,
125 .update_survey = mt7615_update_channel,
126 .set_channel = mt7615_set_channel,
127 };
128 static struct mt76_bus_ops bus_ops = {
129 .rr = mt7663u_rr,
130 .wr = mt7663u_wr,
131 .rmw = mt7663u_rmw,
132 .read_copy = mt76u_read_copy,
133 .write_copy = mt7663u_copy,
134 .type = MT76_BUS_USB,
135 };
136 struct usb_device *udev = interface_to_usbdev(usb_intf);
137 struct ieee80211_ops *ops;
138 struct mt7615_dev *dev;
139 struct mt76_dev *mdev;
140 int ret;
141
142 ops = devm_kmemdup(&usb_intf->dev, &mt7615_ops, sizeof(mt7615_ops),
143 GFP_KERNEL);
144 if (!ops)
145 return -ENOMEM;
146
147 ops->stop = mt7663u_stop;
148
149 mdev = mt76_alloc_device(&usb_intf->dev, sizeof(*dev), ops, &drv_ops);
150 if (!mdev)
151 return -ENOMEM;
152
153 dev = container_of(mdev, struct mt7615_dev, mt76);
154 udev = usb_get_dev(udev);
155 usb_reset_device(udev);
156
157 usb_set_intfdata(usb_intf, dev);
158
159 INIT_WORK(&dev->mcu_work, mt7663u_init_work);
160 dev->reg_map = mt7663_usb_sdio_reg_map;
161 dev->ops = ops;
162 ret = __mt76u_init(mdev, usb_intf, &bus_ops);
163 if (ret < 0)
164 goto error;
165
166 mdev->rev = (mt76_rr(dev, MT_HW_CHIPID) << 16) |
167 (mt76_rr(dev, MT_HW_REV) & 0xff);
168 dev_dbg(mdev->dev, "ASIC revision: %04x\n", mdev->rev);
169
170 if (!mt76_poll_msec(dev, MT_CONN_ON_MISC, MT_TOP_MISC2_FW_PWR_ON,
171 FW_STATE_PWR_ON << 1, 500)) {
172 ret = mt7663u_mcu_power_on(dev);
173 if (ret)
174 goto error;
175 } else {
176 set_bit(MT76_STATE_POWER_OFF, &dev->mphy.state);
177 }
178
179 ret = mt76u_alloc_mcu_queue(&dev->mt76);
180 if (ret)
181 goto error;
182
183 ret = mt76u_alloc_queues(&dev->mt76);
184 if (ret)
185 goto error;
186
187 ret = mt7663_usb_sdio_register_device(dev);
188 if (ret)
189 goto error;
190
191 return 0;
192
193 error:
194 mt76u_queues_deinit(&dev->mt76);
195 usb_set_intfdata(usb_intf, NULL);
196 usb_put_dev(interface_to_usbdev(usb_intf));
197
198 mt76_free_device(&dev->mt76);
199
200 return ret;
201 }
202
mt7663u_disconnect(struct usb_interface * usb_intf)203 static void mt7663u_disconnect(struct usb_interface *usb_intf)
204 {
205 struct mt7615_dev *dev = usb_get_intfdata(usb_intf);
206
207 if (!test_bit(MT76_STATE_INITIALIZED, &dev->mphy.state))
208 return;
209
210 ieee80211_unregister_hw(dev->mt76.hw);
211 mt7663u_cleanup(dev);
212
213 usb_set_intfdata(usb_intf, NULL);
214 usb_put_dev(interface_to_usbdev(usb_intf));
215
216 mt76_free_device(&dev->mt76);
217 }
218
219 #ifdef CONFIG_PM
mt7663u_suspend(struct usb_interface * intf,pm_message_t state)220 static int mt7663u_suspend(struct usb_interface *intf, pm_message_t state)
221 {
222 struct mt7615_dev *dev = usb_get_intfdata(intf);
223
224 if (!test_bit(MT76_STATE_SUSPEND, &dev->mphy.state) &&
225 mt7615_firmware_offload(dev)) {
226 int err;
227
228 err = mt76_connac_mcu_set_hif_suspend(&dev->mt76, true);
229 if (err < 0)
230 return err;
231 }
232
233 mt76u_stop_rx(&dev->mt76);
234 mt76u_stop_tx(&dev->mt76);
235
236 return 0;
237 }
238
mt7663u_resume(struct usb_interface * intf)239 static int mt7663u_resume(struct usb_interface *intf)
240 {
241 struct mt7615_dev *dev = usb_get_intfdata(intf);
242 int err;
243
244 err = mt76u_vendor_request(&dev->mt76, MT_VEND_FEATURE_SET,
245 USB_DIR_OUT | USB_TYPE_VENDOR,
246 0x5, 0x0, NULL, 0);
247 if (err)
248 return err;
249
250 err = mt76u_resume_rx(&dev->mt76);
251 if (err < 0)
252 return err;
253
254 if (!test_bit(MT76_STATE_SUSPEND, &dev->mphy.state) &&
255 mt7615_firmware_offload(dev))
256 err = mt76_connac_mcu_set_hif_suspend(&dev->mt76, false);
257
258 return err;
259 }
260 #endif /* CONFIG_PM */
261
262 MODULE_DEVICE_TABLE(usb, mt7615_device_table);
263 MODULE_FIRMWARE(MT7663_OFFLOAD_FIRMWARE_N9);
264 MODULE_FIRMWARE(MT7663_OFFLOAD_ROM_PATCH);
265 MODULE_FIRMWARE(MT7663_FIRMWARE_N9);
266 MODULE_FIRMWARE(MT7663_ROM_PATCH);
267
268 static struct usb_driver mt7663u_driver = {
269 .name = KBUILD_MODNAME,
270 .id_table = mt7615_device_table,
271 .probe = mt7663u_probe,
272 .disconnect = mt7663u_disconnect,
273 #ifdef CONFIG_PM
274 .suspend = mt7663u_suspend,
275 .resume = mt7663u_resume,
276 .reset_resume = mt7663u_resume,
277 #endif /* CONFIG_PM */
278 .soft_unbind = 1,
279 .disable_hub_initiated_lpm = 1,
280 };
281 module_usb_driver(mt7663u_driver);
282
283 MODULE_AUTHOR("Sean Wang <sean.wang@mediatek.com>");
284 MODULE_AUTHOR("Lorenzo Bianconi <lorenzo@kernel.org>");
285 MODULE_DESCRIPTION("MediaTek MT7663U (USB) wireless driver");
286 MODULE_LICENSE("Dual BSD/GPL");
287