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	{ USB_DEVICE_AND_INTERFACE_INFO(0x043e, 0x310c, 0xff, 0xff, 0xff) },
21	{ },
22};
23
24static 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
36static 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
44static 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
57static 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
82static void mt7663u_stop(struct ieee80211_hw *hw)
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
95static 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
101static 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
112static 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	};
127	static struct mt76_bus_ops bus_ops = {
128		.rr = mt7663u_rr,
129		.wr = mt7663u_wr,
130		.rmw = mt7663u_rmw,
131		.read_copy = mt76u_read_copy,
132		.write_copy = mt7663u_copy,
133		.type = MT76_BUS_USB,
134	};
135	struct usb_device *udev = interface_to_usbdev(usb_intf);
136	struct ieee80211_ops *ops;
137	struct mt7615_dev *dev;
138	struct mt76_dev *mdev;
139	int ret;
140
141	ops = devm_kmemdup(&usb_intf->dev, &mt7615_ops, sizeof(mt7615_ops),
142			   GFP_KERNEL);
143	if (!ops)
144		return -ENOMEM;
145
146	ops->stop = mt7663u_stop;
147
148	mdev = mt76_alloc_device(&usb_intf->dev, sizeof(*dev), ops, &drv_ops);
149	if (!mdev)
150		return -ENOMEM;
151
152	dev = container_of(mdev, struct mt7615_dev, mt76);
153	udev = usb_get_dev(udev);
154	usb_reset_device(udev);
155
156	usb_set_intfdata(usb_intf, dev);
157
158	INIT_WORK(&dev->mcu_work, mt7663u_init_work);
159	dev->reg_map = mt7663_usb_sdio_reg_map;
160	dev->ops = ops;
161	ret = __mt76u_init(mdev, usb_intf, &bus_ops);
162	if (ret < 0)
163		goto error;
164
165	mdev->rev = (mt76_rr(dev, MT_HW_CHIPID) << 16) |
166		    (mt76_rr(dev, MT_HW_REV) & 0xff);
167	dev_dbg(mdev->dev, "ASIC revision: %04x\n", mdev->rev);
168
169	if (!mt76_poll_msec(dev, MT_CONN_ON_MISC, MT_TOP_MISC2_FW_PWR_ON,
170			    FW_STATE_PWR_ON << 1, 500)) {
171		ret = mt7663u_mcu_power_on(dev);
172		if (ret)
173			goto error;
174	} else {
175		set_bit(MT76_STATE_POWER_OFF, &dev->mphy.state);
176	}
177
178	ret = mt76u_alloc_mcu_queue(&dev->mt76);
179	if (ret)
180		goto error;
181
182	ret = mt76u_alloc_queues(&dev->mt76);
183	if (ret)
184		goto error;
185
186	ret = mt7663_usb_sdio_register_device(dev);
187	if (ret)
188		goto error;
189
190	return 0;
191
192error:
193	mt76u_queues_deinit(&dev->mt76);
194	usb_set_intfdata(usb_intf, NULL);
195	usb_put_dev(interface_to_usbdev(usb_intf));
196
197	mt76_free_device(&dev->mt76);
198
199	return ret;
200}
201
202static void mt7663u_disconnect(struct usb_interface *usb_intf)
203{
204	struct mt7615_dev *dev = usb_get_intfdata(usb_intf);
205
206	if (!test_bit(MT76_STATE_INITIALIZED, &dev->mphy.state))
207		return;
208
209	ieee80211_unregister_hw(dev->mt76.hw);
210	mt7663u_cleanup(dev);
211
212	usb_set_intfdata(usb_intf, NULL);
213	usb_put_dev(interface_to_usbdev(usb_intf));
214
215	mt76_free_device(&dev->mt76);
216}
217
218#ifdef CONFIG_PM
219static int mt7663u_suspend(struct usb_interface *intf, pm_message_t state)
220{
221	struct mt7615_dev *dev = usb_get_intfdata(intf);
222
223	if (!test_bit(MT76_STATE_SUSPEND, &dev->mphy.state) &&
224	    mt7615_firmware_offload(dev)) {
225		int err;
226
227		err = mt76_connac_mcu_set_hif_suspend(&dev->mt76, true);
228		if (err < 0)
229			return err;
230	}
231
232	mt76u_stop_rx(&dev->mt76);
233	mt76u_stop_tx(&dev->mt76);
234
235	return 0;
236}
237
238static int mt7663u_resume(struct usb_interface *intf)
239{
240	struct mt7615_dev *dev = usb_get_intfdata(intf);
241	int err;
242
243	err = mt76u_vendor_request(&dev->mt76, MT_VEND_FEATURE_SET,
244				   USB_DIR_OUT | USB_TYPE_VENDOR,
245				   0x5, 0x0, NULL, 0);
246	if (err)
247		return err;
248
249	err = mt76u_resume_rx(&dev->mt76);
250	if (err < 0)
251		return err;
252
253	if (!test_bit(MT76_STATE_SUSPEND, &dev->mphy.state) &&
254	    mt7615_firmware_offload(dev))
255		err = mt76_connac_mcu_set_hif_suspend(&dev->mt76, false);
256
257	return err;
258}
259#endif /* CONFIG_PM */
260
261MODULE_DEVICE_TABLE(usb, mt7615_device_table);
262MODULE_FIRMWARE(MT7663_OFFLOAD_FIRMWARE_N9);
263MODULE_FIRMWARE(MT7663_OFFLOAD_ROM_PATCH);
264MODULE_FIRMWARE(MT7663_FIRMWARE_N9);
265MODULE_FIRMWARE(MT7663_ROM_PATCH);
266
267static struct usb_driver mt7663u_driver = {
268	.name		= KBUILD_MODNAME,
269	.id_table	= mt7615_device_table,
270	.probe		= mt7663u_probe,
271	.disconnect	= mt7663u_disconnect,
272#ifdef CONFIG_PM
273	.suspend	= mt7663u_suspend,
274	.resume		= mt7663u_resume,
275	.reset_resume	= mt7663u_resume,
276#endif /* CONFIG_PM */
277	.soft_unbind	= 1,
278	.disable_hub_initiated_lpm = 1,
279};
280module_usb_driver(mt7663u_driver);
281
282MODULE_AUTHOR("Sean Wang <sean.wang@mediatek.com>");
283MODULE_AUTHOR("Lorenzo Bianconi <lorenzo@kernel.org>");
284MODULE_LICENSE("Dual BSD/GPL");
285