1 // SPDX-License-Identifier: ISC
2 /* Copyright (C) 2020 MediaTek Inc.
3  *
4  */
5 
6 #include <linux/kernel.h>
7 #include <linux/module.h>
8 #include <linux/pci.h>
9 
10 #include "mt7921.h"
11 #include "mac.h"
12 #include "mcu.h"
13 #include "../trace.h"
14 
15 static const struct pci_device_id mt7921_pci_device_table[] = {
16 	{ PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x7961),
17 		.driver_data = (kernel_ulong_t)MT7921_FIRMWARE_WM },
18 	{ PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x7922),
19 		.driver_data = (kernel_ulong_t)MT7922_FIRMWARE_WM },
20 	{ PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x0608),
21 		.driver_data = (kernel_ulong_t)MT7921_FIRMWARE_WM },
22 	{ PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x0616),
23 		.driver_data = (kernel_ulong_t)MT7921_FIRMWARE_WM },
24 	{ },
25 };
26 
27 static bool mt7921_disable_aspm;
28 module_param_named(disable_aspm, mt7921_disable_aspm, bool, 0644);
29 MODULE_PARM_DESC(disable_aspm, "disable PCI ASPM support");
30 
31 static void
32 mt7921_rx_poll_complete(struct mt76_dev *mdev, enum mt76_rxq_id q)
33 {
34 	struct mt7921_dev *dev = container_of(mdev, struct mt7921_dev, mt76);
35 
36 	if (q == MT_RXQ_MAIN)
37 		mt7921_irq_enable(dev, MT_INT_RX_DONE_DATA);
38 	else if (q == MT_RXQ_MCU_WA)
39 		mt7921_irq_enable(dev, MT_INT_RX_DONE_WM2);
40 	else
41 		mt7921_irq_enable(dev, MT_INT_RX_DONE_WM);
42 }
43 
44 static irqreturn_t mt7921_irq_handler(int irq, void *dev_instance)
45 {
46 	struct mt7921_dev *dev = dev_instance;
47 
48 	mt76_wr(dev, MT_WFDMA0_HOST_INT_ENA, 0);
49 
50 	if (!test_bit(MT76_STATE_INITIALIZED, &dev->mphy.state))
51 		return IRQ_NONE;
52 
53 	tasklet_schedule(&dev->irq_tasklet);
54 
55 	return IRQ_HANDLED;
56 }
57 
58 static void mt7921_irq_tasklet(unsigned long data)
59 {
60 	struct mt7921_dev *dev = (struct mt7921_dev *)data;
61 	u32 intr, mask = 0;
62 
63 	mt76_wr(dev, MT_WFDMA0_HOST_INT_ENA, 0);
64 
65 	intr = mt76_rr(dev, MT_WFDMA0_HOST_INT_STA);
66 	intr &= dev->mt76.mmio.irqmask;
67 	mt76_wr(dev, MT_WFDMA0_HOST_INT_STA, intr);
68 
69 	trace_dev_irq(&dev->mt76, intr, dev->mt76.mmio.irqmask);
70 
71 	mask |= intr & MT_INT_RX_DONE_ALL;
72 	if (intr & MT_INT_TX_DONE_MCU)
73 		mask |= MT_INT_TX_DONE_MCU;
74 
75 	if (intr & MT_INT_MCU_CMD) {
76 		u32 intr_sw;
77 
78 		intr_sw = mt76_rr(dev, MT_MCU_CMD);
79 		/* ack MCU2HOST_SW_INT_STA */
80 		mt76_wr(dev, MT_MCU_CMD, intr_sw);
81 		if (intr_sw & MT_MCU_CMD_WAKE_RX_PCIE) {
82 			mask |= MT_INT_RX_DONE_DATA;
83 			intr |= MT_INT_RX_DONE_DATA;
84 		}
85 	}
86 
87 	mt76_set_irq_mask(&dev->mt76, MT_WFDMA0_HOST_INT_ENA, mask, 0);
88 
89 	if (intr & MT_INT_TX_DONE_ALL)
90 		napi_schedule(&dev->mt76.tx_napi);
91 
92 	if (intr & MT_INT_RX_DONE_WM)
93 		napi_schedule(&dev->mt76.napi[MT_RXQ_MCU]);
94 
95 	if (intr & MT_INT_RX_DONE_WM2)
96 		napi_schedule(&dev->mt76.napi[MT_RXQ_MCU_WA]);
97 
98 	if (intr & MT_INT_RX_DONE_DATA)
99 		napi_schedule(&dev->mt76.napi[MT_RXQ_MAIN]);
100 }
101 
102 static int mt7921e_init_reset(struct mt7921_dev *dev)
103 {
104 	return mt7921_wpdma_reset(dev, true);
105 }
106 
107 static void mt7921e_unregister_device(struct mt7921_dev *dev)
108 {
109 	int i;
110 	struct mt76_connac_pm *pm = &dev->pm;
111 
112 	cancel_work_sync(&dev->init_work);
113 	mt76_unregister_device(&dev->mt76);
114 	mt76_for_each_q_rx(&dev->mt76, i)
115 		napi_disable(&dev->mt76.napi[i]);
116 	cancel_delayed_work_sync(&pm->ps_work);
117 	cancel_work_sync(&pm->wake_work);
118 
119 	mt7921_tx_token_put(dev);
120 	mt7921_mcu_drv_pmctrl(dev);
121 	mt7921_dma_cleanup(dev);
122 	mt7921_wfsys_reset(dev);
123 	skb_queue_purge(&dev->mt76.mcu.res_q);
124 
125 	tasklet_disable(&dev->irq_tasklet);
126 }
127 
128 static u32 __mt7921_reg_addr(struct mt7921_dev *dev, u32 addr)
129 {
130 	static const struct mt76_connac_reg_map fixed_map[] = {
131 		{ 0x820d0000, 0x30000, 0x10000 }, /* WF_LMAC_TOP (WF_WTBLON) */
132 		{ 0x820ed000, 0x24800, 0x00800 }, /* WF_LMAC_TOP BN0 (WF_MIB) */
133 		{ 0x820e4000, 0x21000, 0x00400 }, /* WF_LMAC_TOP BN0 (WF_TMAC) */
134 		{ 0x820e7000, 0x21e00, 0x00200 }, /* WF_LMAC_TOP BN0 (WF_DMA) */
135 		{ 0x820eb000, 0x24200, 0x00400 }, /* WF_LMAC_TOP BN0 (WF_LPON) */
136 		{ 0x820e2000, 0x20800, 0x00400 }, /* WF_LMAC_TOP BN0 (WF_AGG) */
137 		{ 0x820e3000, 0x20c00, 0x00400 }, /* WF_LMAC_TOP BN0 (WF_ARB) */
138 		{ 0x820e5000, 0x21400, 0x00800 }, /* WF_LMAC_TOP BN0 (WF_RMAC) */
139 		{ 0x00400000, 0x80000, 0x10000 }, /* WF_MCU_SYSRAM */
140 		{ 0x00410000, 0x90000, 0x10000 }, /* WF_MCU_SYSRAM (configure register) */
141 		{ 0x40000000, 0x70000, 0x10000 }, /* WF_UMAC_SYSRAM */
142 		{ 0x54000000, 0x02000, 0x01000 }, /* WFDMA PCIE0 MCU DMA0 */
143 		{ 0x55000000, 0x03000, 0x01000 }, /* WFDMA PCIE0 MCU DMA1 */
144 		{ 0x58000000, 0x06000, 0x01000 }, /* WFDMA PCIE1 MCU DMA0 (MEM_DMA) */
145 		{ 0x59000000, 0x07000, 0x01000 }, /* WFDMA PCIE1 MCU DMA1 */
146 		{ 0x7c000000, 0xf0000, 0x10000 }, /* CONN_INFRA */
147 		{ 0x7c020000, 0xd0000, 0x10000 }, /* CONN_INFRA, WFDMA */
148 		{ 0x7c060000, 0xe0000, 0x10000 }, /* CONN_INFRA, conn_host_csr_top */
149 		{ 0x80020000, 0xb0000, 0x10000 }, /* WF_TOP_MISC_OFF */
150 		{ 0x81020000, 0xc0000, 0x10000 }, /* WF_TOP_MISC_ON */
151 		{ 0x820c0000, 0x08000, 0x04000 }, /* WF_UMAC_TOP (PLE) */
152 		{ 0x820c8000, 0x0c000, 0x02000 }, /* WF_UMAC_TOP (PSE) */
153 		{ 0x820cc000, 0x0e000, 0x01000 }, /* WF_UMAC_TOP (PP) */
154 		{ 0x820cd000, 0x0f000, 0x01000 }, /* WF_MDP_TOP */
155 		{ 0x74030000, 0x10000, 0x10000 }, /* PCIE_MAC_IREG */
156 		{ 0x820ce000, 0x21c00, 0x00200 }, /* WF_LMAC_TOP (WF_SEC) */
157 		{ 0x820cf000, 0x22000, 0x01000 }, /* WF_LMAC_TOP (WF_PF) */
158 		{ 0x820e0000, 0x20000, 0x00400 }, /* WF_LMAC_TOP BN0 (WF_CFG) */
159 		{ 0x820e1000, 0x20400, 0x00200 }, /* WF_LMAC_TOP BN0 (WF_TRB) */
160 		{ 0x820e9000, 0x23400, 0x00200 }, /* WF_LMAC_TOP BN0 (WF_WTBLOFF) */
161 		{ 0x820ea000, 0x24000, 0x00200 }, /* WF_LMAC_TOP BN0 (WF_ETBF) */
162 		{ 0x820ec000, 0x24600, 0x00200 }, /* WF_LMAC_TOP BN0 (WF_INT) */
163 		{ 0x820f0000, 0xa0000, 0x00400 }, /* WF_LMAC_TOP BN1 (WF_CFG) */
164 		{ 0x820f1000, 0xa0600, 0x00200 }, /* WF_LMAC_TOP BN1 (WF_TRB) */
165 		{ 0x820f2000, 0xa0800, 0x00400 }, /* WF_LMAC_TOP BN1 (WF_AGG) */
166 		{ 0x820f3000, 0xa0c00, 0x00400 }, /* WF_LMAC_TOP BN1 (WF_ARB) */
167 		{ 0x820f4000, 0xa1000, 0x00400 }, /* WF_LMAC_TOP BN1 (WF_TMAC) */
168 		{ 0x820f5000, 0xa1400, 0x00800 }, /* WF_LMAC_TOP BN1 (WF_RMAC) */
169 		{ 0x820f7000, 0xa1e00, 0x00200 }, /* WF_LMAC_TOP BN1 (WF_DMA) */
170 		{ 0x820f9000, 0xa3400, 0x00200 }, /* WF_LMAC_TOP BN1 (WF_WTBLOFF) */
171 		{ 0x820fa000, 0xa4000, 0x00200 }, /* WF_LMAC_TOP BN1 (WF_ETBF) */
172 		{ 0x820fb000, 0xa4200, 0x00400 }, /* WF_LMAC_TOP BN1 (WF_LPON) */
173 		{ 0x820fc000, 0xa4600, 0x00200 }, /* WF_LMAC_TOP BN1 (WF_INT) */
174 		{ 0x820fd000, 0xa4800, 0x00800 }, /* WF_LMAC_TOP BN1 (WF_MIB) */
175 	};
176 	int i;
177 
178 	if (addr < 0x100000)
179 		return addr;
180 
181 	for (i = 0; i < ARRAY_SIZE(fixed_map); i++) {
182 		u32 ofs;
183 
184 		if (addr < fixed_map[i].phys)
185 			continue;
186 
187 		ofs = addr - fixed_map[i].phys;
188 		if (ofs > fixed_map[i].size)
189 			continue;
190 
191 		return fixed_map[i].maps + ofs;
192 	}
193 
194 	if ((addr >= 0x18000000 && addr < 0x18c00000) ||
195 	    (addr >= 0x70000000 && addr < 0x78000000) ||
196 	    (addr >= 0x7c000000 && addr < 0x7c400000))
197 		return mt7921_reg_map_l1(dev, addr);
198 
199 	dev_err(dev->mt76.dev, "Access currently unsupported address %08x\n",
200 		addr);
201 
202 	return 0;
203 }
204 
205 static u32 mt7921_rr(struct mt76_dev *mdev, u32 offset)
206 {
207 	struct mt7921_dev *dev = container_of(mdev, struct mt7921_dev, mt76);
208 	u32 addr = __mt7921_reg_addr(dev, offset);
209 
210 	return dev->bus_ops->rr(mdev, addr);
211 }
212 
213 static void mt7921_wr(struct mt76_dev *mdev, u32 offset, u32 val)
214 {
215 	struct mt7921_dev *dev = container_of(mdev, struct mt7921_dev, mt76);
216 	u32 addr = __mt7921_reg_addr(dev, offset);
217 
218 	dev->bus_ops->wr(mdev, addr, val);
219 }
220 
221 static u32 mt7921_rmw(struct mt76_dev *mdev, u32 offset, u32 mask, u32 val)
222 {
223 	struct mt7921_dev *dev = container_of(mdev, struct mt7921_dev, mt76);
224 	u32 addr = __mt7921_reg_addr(dev, offset);
225 
226 	return dev->bus_ops->rmw(mdev, addr, mask, val);
227 }
228 
229 static int mt7921_pci_probe(struct pci_dev *pdev,
230 			    const struct pci_device_id *id)
231 {
232 	static const struct mt76_driver_ops drv_ops = {
233 		/* txwi_size = txd size + txp size */
234 		.txwi_size = MT_TXD_SIZE + sizeof(struct mt76_connac_hw_txp),
235 		.drv_flags = MT_DRV_TXWI_NO_FREE | MT_DRV_HW_MGMT_TXQ |
236 			     MT_DRV_AMSDU_OFFLOAD,
237 		.survey_flags = SURVEY_INFO_TIME_TX |
238 				SURVEY_INFO_TIME_RX |
239 				SURVEY_INFO_TIME_BSS_RX,
240 		.token_size = MT7921_TOKEN_SIZE,
241 		.tx_prepare_skb = mt7921e_tx_prepare_skb,
242 		.tx_complete_skb = mt76_connac_tx_complete_skb,
243 		.rx_check = mt7921_rx_check,
244 		.rx_skb = mt7921_queue_rx_skb,
245 		.rx_poll_complete = mt7921_rx_poll_complete,
246 		.sta_ps = mt7921_sta_ps,
247 		.sta_add = mt7921_mac_sta_add,
248 		.sta_assoc = mt7921_mac_sta_assoc,
249 		.sta_remove = mt7921_mac_sta_remove,
250 		.update_survey = mt7921_update_channel,
251 	};
252 	static const struct mt7921_hif_ops mt7921_pcie_ops = {
253 		.init_reset = mt7921e_init_reset,
254 		.reset = mt7921e_mac_reset,
255 		.mcu_init = mt7921e_mcu_init,
256 		.drv_own = mt7921e_mcu_drv_pmctrl,
257 		.fw_own = mt7921e_mcu_fw_pmctrl,
258 	};
259 
260 	struct ieee80211_ops *ops;
261 	struct mt76_bus_ops *bus_ops;
262 	struct mt7921_dev *dev;
263 	struct mt76_dev *mdev;
264 	u8 features;
265 	int ret;
266 
267 	ret = pcim_enable_device(pdev);
268 	if (ret)
269 		return ret;
270 
271 	ret = pcim_iomap_regions(pdev, BIT(0), pci_name(pdev));
272 	if (ret)
273 		return ret;
274 
275 	pci_set_master(pdev);
276 
277 	ret = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_ALL_TYPES);
278 	if (ret < 0)
279 		return ret;
280 
281 	ret = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
282 	if (ret)
283 		goto err_free_pci_vec;
284 
285 	if (mt7921_disable_aspm)
286 		mt76_pci_disable_aspm(pdev);
287 
288 	features = mt7921_check_offload_capability(&pdev->dev, (const char *)
289 						   id->driver_data);
290 	ops = devm_kmemdup(&pdev->dev, &mt7921_ops, sizeof(mt7921_ops),
291 			   GFP_KERNEL);
292 	if (!ops) {
293 		ret = -ENOMEM;
294 		goto err_free_pci_vec;
295 	}
296 
297 	if (!(features & MT7921_FW_CAP_CNM)) {
298 		ops->remain_on_channel = NULL;
299 		ops->cancel_remain_on_channel = NULL;
300 		ops->add_chanctx = NULL;
301 		ops->remove_chanctx = NULL;
302 		ops->change_chanctx = NULL;
303 		ops->assign_vif_chanctx = NULL;
304 		ops->unassign_vif_chanctx = NULL;
305 		ops->mgd_prepare_tx = NULL;
306 		ops->mgd_complete_tx = NULL;
307 	}
308 
309 	mdev = mt76_alloc_device(&pdev->dev, sizeof(*dev), ops, &drv_ops);
310 	if (!mdev) {
311 		ret = -ENOMEM;
312 		goto err_free_pci_vec;
313 	}
314 
315 	pci_set_drvdata(pdev, mdev);
316 
317 	dev = container_of(mdev, struct mt7921_dev, mt76);
318 	dev->fw_features = features;
319 	dev->hif_ops = &mt7921_pcie_ops;
320 	mt76_mmio_init(&dev->mt76, pcim_iomap_table(pdev)[0]);
321 	tasklet_init(&dev->irq_tasklet, mt7921_irq_tasklet, (unsigned long)dev);
322 
323 	dev->phy.dev = dev;
324 	dev->phy.mt76 = &dev->mt76.phy;
325 	dev->mt76.phy.priv = &dev->phy;
326 	dev->bus_ops = dev->mt76.bus;
327 	bus_ops = devm_kmemdup(dev->mt76.dev, dev->bus_ops, sizeof(*bus_ops),
328 			       GFP_KERNEL);
329 	if (!bus_ops) {
330 		ret = -ENOMEM;
331 		goto err_free_dev;
332 	}
333 
334 	bus_ops->rr = mt7921_rr;
335 	bus_ops->wr = mt7921_wr;
336 	bus_ops->rmw = mt7921_rmw;
337 	dev->mt76.bus = bus_ops;
338 
339 	ret = __mt7921e_mcu_drv_pmctrl(dev);
340 	if (ret)
341 		goto err_free_dev;
342 
343 	mdev->rev = (mt7921_l1_rr(dev, MT_HW_CHIPID) << 16) |
344 		    (mt7921_l1_rr(dev, MT_HW_REV) & 0xff);
345 	dev_info(mdev->dev, "ASIC revision: %04x\n", mdev->rev);
346 
347 	mt76_wr(dev, MT_WFDMA0_HOST_INT_ENA, 0);
348 
349 	mt76_wr(dev, MT_PCIE_MAC_INT_ENABLE, 0xff);
350 
351 	ret = devm_request_irq(mdev->dev, pdev->irq, mt7921_irq_handler,
352 			       IRQF_SHARED, KBUILD_MODNAME, dev);
353 	if (ret)
354 		goto err_free_dev;
355 
356 	ret = mt7921_dma_init(dev);
357 	if (ret)
358 		goto err_free_irq;
359 
360 	ret = mt7921_register_device(dev);
361 	if (ret)
362 		goto err_free_irq;
363 
364 	return 0;
365 
366 err_free_irq:
367 	devm_free_irq(&pdev->dev, pdev->irq, dev);
368 err_free_dev:
369 	mt76_free_device(&dev->mt76);
370 err_free_pci_vec:
371 	pci_free_irq_vectors(pdev);
372 
373 	return ret;
374 }
375 
376 static void mt7921_pci_remove(struct pci_dev *pdev)
377 {
378 	struct mt76_dev *mdev = pci_get_drvdata(pdev);
379 	struct mt7921_dev *dev = container_of(mdev, struct mt7921_dev, mt76);
380 
381 	mt7921e_unregister_device(dev);
382 	devm_free_irq(&pdev->dev, pdev->irq, dev);
383 	mt76_free_device(&dev->mt76);
384 	pci_free_irq_vectors(pdev);
385 }
386 
387 static int mt7921_pci_suspend(struct device *device)
388 {
389 	struct pci_dev *pdev = to_pci_dev(device);
390 	struct mt76_dev *mdev = pci_get_drvdata(pdev);
391 	struct mt7921_dev *dev = container_of(mdev, struct mt7921_dev, mt76);
392 	struct mt76_connac_pm *pm = &dev->pm;
393 	int i, err;
394 
395 	pm->suspended = true;
396 	flush_work(&dev->reset_work);
397 	cancel_delayed_work_sync(&pm->ps_work);
398 	cancel_work_sync(&pm->wake_work);
399 
400 	err = mt7921_mcu_drv_pmctrl(dev);
401 	if (err < 0)
402 		goto restore_suspend;
403 
404 	err = mt76_connac_mcu_set_hif_suspend(mdev, true);
405 	if (err)
406 		goto restore_suspend;
407 
408 	/* always enable deep sleep during suspend to reduce
409 	 * power consumption
410 	 */
411 	mt76_connac_mcu_set_deep_sleep(&dev->mt76, true);
412 
413 	napi_disable(&mdev->tx_napi);
414 	mt76_worker_disable(&mdev->tx_worker);
415 
416 	mt76_for_each_q_rx(mdev, i) {
417 		napi_disable(&mdev->napi[i]);
418 	}
419 
420 	/* wait until dma is idle  */
421 	mt76_poll(dev, MT_WFDMA0_GLO_CFG,
422 		  MT_WFDMA0_GLO_CFG_TX_DMA_BUSY |
423 		  MT_WFDMA0_GLO_CFG_RX_DMA_BUSY, 0, 1000);
424 
425 	/* put dma disabled */
426 	mt76_clear(dev, MT_WFDMA0_GLO_CFG,
427 		   MT_WFDMA0_GLO_CFG_TX_DMA_EN | MT_WFDMA0_GLO_CFG_RX_DMA_EN);
428 
429 	/* disable interrupt */
430 	mt76_wr(dev, MT_WFDMA0_HOST_INT_ENA, 0);
431 	mt76_wr(dev, MT_PCIE_MAC_INT_ENABLE, 0x0);
432 	synchronize_irq(pdev->irq);
433 	tasklet_kill(&dev->irq_tasklet);
434 
435 	err = mt7921_mcu_fw_pmctrl(dev);
436 	if (err)
437 		goto restore_napi;
438 
439 	return 0;
440 
441 restore_napi:
442 	mt76_for_each_q_rx(mdev, i) {
443 		napi_enable(&mdev->napi[i]);
444 	}
445 	napi_enable(&mdev->tx_napi);
446 
447 	if (!pm->ds_enable)
448 		mt76_connac_mcu_set_deep_sleep(&dev->mt76, false);
449 
450 	mt76_connac_mcu_set_hif_suspend(mdev, false);
451 
452 restore_suspend:
453 	pm->suspended = false;
454 
455 	if (err < 0)
456 		mt7921_reset(&dev->mt76);
457 
458 	return err;
459 }
460 
461 static int mt7921_pci_resume(struct device *device)
462 {
463 	struct pci_dev *pdev = to_pci_dev(device);
464 	struct mt76_dev *mdev = pci_get_drvdata(pdev);
465 	struct mt7921_dev *dev = container_of(mdev, struct mt7921_dev, mt76);
466 	struct mt76_connac_pm *pm = &dev->pm;
467 	int i, err;
468 
469 	err = mt7921_mcu_drv_pmctrl(dev);
470 	if (err < 0)
471 		goto failed;
472 
473 	mt7921_wpdma_reinit_cond(dev);
474 
475 	/* enable interrupt */
476 	mt76_wr(dev, MT_PCIE_MAC_INT_ENABLE, 0xff);
477 	mt7921_irq_enable(dev, MT_INT_RX_DONE_ALL | MT_INT_TX_DONE_ALL |
478 			  MT_INT_MCU_CMD);
479 	mt76_set(dev, MT_MCU2HOST_SW_INT_ENA, MT_MCU_CMD_WAKE_RX_PCIE);
480 
481 	/* put dma enabled */
482 	mt76_set(dev, MT_WFDMA0_GLO_CFG,
483 		 MT_WFDMA0_GLO_CFG_TX_DMA_EN | MT_WFDMA0_GLO_CFG_RX_DMA_EN);
484 
485 	mt76_worker_enable(&mdev->tx_worker);
486 
487 	local_bh_disable();
488 	mt76_for_each_q_rx(mdev, i) {
489 		napi_enable(&mdev->napi[i]);
490 		napi_schedule(&mdev->napi[i]);
491 	}
492 	napi_enable(&mdev->tx_napi);
493 	napi_schedule(&mdev->tx_napi);
494 	local_bh_enable();
495 
496 	/* restore previous ds setting */
497 	if (!pm->ds_enable)
498 		mt76_connac_mcu_set_deep_sleep(&dev->mt76, false);
499 
500 	err = mt76_connac_mcu_set_hif_suspend(mdev, false);
501 failed:
502 	pm->suspended = false;
503 
504 	if (err < 0)
505 		mt7921_reset(&dev->mt76);
506 
507 	return err;
508 }
509 
510 static void mt7921_pci_shutdown(struct pci_dev *pdev)
511 {
512 	struct mt76_dev *mdev = pci_get_drvdata(pdev);
513 	struct mt7921_dev *dev = container_of(mdev, struct mt7921_dev, mt76);
514 	struct mt76_connac_pm *pm = &dev->pm;
515 
516 	cancel_delayed_work_sync(&pm->ps_work);
517 	cancel_work_sync(&pm->wake_work);
518 
519 	/* chip cleanup before reboot */
520 	mt7921_mcu_drv_pmctrl(dev);
521 	mt7921_dma_cleanup(dev);
522 	mt7921_wfsys_reset(dev);
523 }
524 
525 static DEFINE_SIMPLE_DEV_PM_OPS(mt7921_pm_ops, mt7921_pci_suspend, mt7921_pci_resume);
526 
527 static struct pci_driver mt7921_pci_driver = {
528 	.name		= KBUILD_MODNAME,
529 	.id_table	= mt7921_pci_device_table,
530 	.probe		= mt7921_pci_probe,
531 	.remove		= mt7921_pci_remove,
532 	.shutdown	= mt7921_pci_shutdown,
533 	.driver.pm	= pm_sleep_ptr(&mt7921_pm_ops),
534 };
535 
536 module_pci_driver(mt7921_pci_driver);
537 
538 MODULE_DEVICE_TABLE(pci, mt7921_pci_device_table);
539 MODULE_FIRMWARE(MT7921_FIRMWARE_WM);
540 MODULE_FIRMWARE(MT7921_ROM_PATCH);
541 MODULE_FIRMWARE(MT7922_FIRMWARE_WM);
542 MODULE_FIRMWARE(MT7922_ROM_PATCH);
543 MODULE_AUTHOR("Sean Wang <sean.wang@mediatek.com>");
544 MODULE_AUTHOR("Lorenzo Bianconi <lorenzo@kernel.org>");
545 MODULE_LICENSE("Dual BSD/GPL");
546