xref: /linux/drivers/net/wireless/mediatek/mt76/mt7921/pci.c (revision 6d9b262afe0ec1d6e0ef99321ca9d6b921310471)
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 #include <linux/of.h>
10 
11 #include "mt7921.h"
12 #include "../mt76_connac2_mac.h"
13 #include "../dma.h"
14 #include "mcu.h"
15 
16 static const struct pci_device_id mt7921_pci_device_table[] = {
17 	{ PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x7961),
18 		.driver_data = (kernel_ulong_t)MT7921_FIRMWARE_WM },
19 	{ PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x7922),
20 		.driver_data = (kernel_ulong_t)MT7922_FIRMWARE_WM },
21 	{ PCI_DEVICE(PCI_VENDOR_ID_ITTIM, 0x7922),
22 		.driver_data = (kernel_ulong_t)MT7922_FIRMWARE_WM },
23 	{ PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x0608),
24 		.driver_data = (kernel_ulong_t)MT7921_FIRMWARE_WM },
25 	{ PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x0616),
26 		.driver_data = (kernel_ulong_t)MT7922_FIRMWARE_WM },
27 	{ },
28 };
29 
30 static bool mt7921_disable_aspm;
31 module_param_named(disable_aspm, mt7921_disable_aspm, bool, 0644);
32 MODULE_PARM_DESC(disable_aspm, "disable PCI ASPM support");
33 
34 static int mt7921e_init_reset(struct mt792x_dev *dev)
35 {
36 	return mt792x_wpdma_reset(dev, true);
37 }
38 
39 static void mt7921e_unregister_device(struct mt792x_dev *dev)
40 {
41 	int i;
42 	struct mt76_connac_pm *pm = &dev->pm;
43 
44 	cancel_work_sync(&dev->init_work);
45 	mt76_unregister_device(&dev->mt76);
46 	mt76_for_each_q_rx(&dev->mt76, i)
47 		napi_disable(&dev->mt76.napi[i]);
48 	cancel_delayed_work_sync(&pm->ps_work);
49 	cancel_work_sync(&pm->wake_work);
50 	cancel_work_sync(&dev->reset_work);
51 
52 	mt76_connac2_tx_token_put(&dev->mt76);
53 	__mt792x_mcu_drv_pmctrl(dev);
54 	mt792x_dma_cleanup(dev);
55 	mt792x_wfsys_reset(dev);
56 	skb_queue_purge(&dev->mt76.mcu.res_q);
57 
58 	tasklet_disable(&dev->mt76.irq_tasklet);
59 }
60 
61 static u32 __mt7921_reg_addr(struct mt792x_dev *dev, u32 addr)
62 {
63 	static const struct mt76_connac_reg_map fixed_map[] = {
64 		{ 0x820d0000, 0x30000, 0x10000 }, /* WF_LMAC_TOP (WF_WTBLON) */
65 		{ 0x820ed000, 0x24800, 0x00800 }, /* WF_LMAC_TOP BN0 (WF_MIB) */
66 		{ 0x820e4000, 0x21000, 0x00400 }, /* WF_LMAC_TOP BN0 (WF_TMAC) */
67 		{ 0x820e7000, 0x21e00, 0x00200 }, /* WF_LMAC_TOP BN0 (WF_DMA) */
68 		{ 0x820eb000, 0x24200, 0x00400 }, /* WF_LMAC_TOP BN0 (WF_LPON) */
69 		{ 0x820e2000, 0x20800, 0x00400 }, /* WF_LMAC_TOP BN0 (WF_AGG) */
70 		{ 0x820e3000, 0x20c00, 0x00400 }, /* WF_LMAC_TOP BN0 (WF_ARB) */
71 		{ 0x820e5000, 0x21400, 0x00800 }, /* WF_LMAC_TOP BN0 (WF_RMAC) */
72 		{ 0x00400000, 0x80000, 0x10000 }, /* WF_MCU_SYSRAM */
73 		{ 0x00410000, 0x90000, 0x10000 }, /* WF_MCU_SYSRAM (configure register) */
74 		{ 0x40000000, 0x70000, 0x10000 }, /* WF_UMAC_SYSRAM */
75 		{ 0x54000000, 0x02000, 0x01000 }, /* WFDMA PCIE0 MCU DMA0 */
76 		{ 0x55000000, 0x03000, 0x01000 }, /* WFDMA PCIE0 MCU DMA1 */
77 		{ 0x58000000, 0x06000, 0x01000 }, /* WFDMA PCIE1 MCU DMA0 (MEM_DMA) */
78 		{ 0x59000000, 0x07000, 0x01000 }, /* WFDMA PCIE1 MCU DMA1 */
79 		{ 0x7c000000, 0xf0000, 0x10000 }, /* CONN_INFRA */
80 		{ 0x7c020000, 0xd0000, 0x10000 }, /* CONN_INFRA, WFDMA */
81 		{ 0x7c060000, 0xe0000, 0x10000 }, /* CONN_INFRA, conn_host_csr_top */
82 		{ 0x80020000, 0xb0000, 0x10000 }, /* WF_TOP_MISC_OFF */
83 		{ 0x81020000, 0xc0000, 0x10000 }, /* WF_TOP_MISC_ON */
84 		{ 0x820c0000, 0x08000, 0x04000 }, /* WF_UMAC_TOP (PLE) */
85 		{ 0x820c8000, 0x0c000, 0x02000 }, /* WF_UMAC_TOP (PSE) */
86 		{ 0x820cc000, 0x0e000, 0x01000 }, /* WF_UMAC_TOP (PP) */
87 		{ 0x820cd000, 0x0f000, 0x01000 }, /* WF_MDP_TOP */
88 		{ 0x74030000, 0x10000, 0x10000 }, /* PCIE_MAC_IREG */
89 		{ 0x820ce000, 0x21c00, 0x00200 }, /* WF_LMAC_TOP (WF_SEC) */
90 		{ 0x820cf000, 0x22000, 0x01000 }, /* WF_LMAC_TOP (WF_PF) */
91 		{ 0x820e0000, 0x20000, 0x00400 }, /* WF_LMAC_TOP BN0 (WF_CFG) */
92 		{ 0x820e1000, 0x20400, 0x00200 }, /* WF_LMAC_TOP BN0 (WF_TRB) */
93 		{ 0x820e9000, 0x23400, 0x00200 }, /* WF_LMAC_TOP BN0 (WF_WTBLOFF) */
94 		{ 0x820ea000, 0x24000, 0x00200 }, /* WF_LMAC_TOP BN0 (WF_ETBF) */
95 		{ 0x820ec000, 0x24600, 0x00200 }, /* WF_LMAC_TOP BN0 (WF_INT) */
96 		{ 0x820f0000, 0xa0000, 0x00400 }, /* WF_LMAC_TOP BN1 (WF_CFG) */
97 		{ 0x820f1000, 0xa0600, 0x00200 }, /* WF_LMAC_TOP BN1 (WF_TRB) */
98 		{ 0x820f2000, 0xa0800, 0x00400 }, /* WF_LMAC_TOP BN1 (WF_AGG) */
99 		{ 0x820f3000, 0xa0c00, 0x00400 }, /* WF_LMAC_TOP BN1 (WF_ARB) */
100 		{ 0x820f4000, 0xa1000, 0x00400 }, /* WF_LMAC_TOP BN1 (WF_TMAC) */
101 		{ 0x820f5000, 0xa1400, 0x00800 }, /* WF_LMAC_TOP BN1 (WF_RMAC) */
102 		{ 0x820f7000, 0xa1e00, 0x00200 }, /* WF_LMAC_TOP BN1 (WF_DMA) */
103 		{ 0x820f9000, 0xa3400, 0x00200 }, /* WF_LMAC_TOP BN1 (WF_WTBLOFF) */
104 		{ 0x820fa000, 0xa4000, 0x00200 }, /* WF_LMAC_TOP BN1 (WF_ETBF) */
105 		{ 0x820fb000, 0xa4200, 0x00400 }, /* WF_LMAC_TOP BN1 (WF_LPON) */
106 		{ 0x820fc000, 0xa4600, 0x00200 }, /* WF_LMAC_TOP BN1 (WF_INT) */
107 		{ 0x820fd000, 0xa4800, 0x00800 }, /* WF_LMAC_TOP BN1 (WF_MIB) */
108 	};
109 	int i;
110 
111 	if (addr < 0x100000)
112 		return addr;
113 
114 	for (i = 0; i < ARRAY_SIZE(fixed_map); i++) {
115 		u32 ofs;
116 
117 		if (addr < fixed_map[i].phys)
118 			continue;
119 
120 		ofs = addr - fixed_map[i].phys;
121 		if (ofs > fixed_map[i].size)
122 			continue;
123 
124 		return fixed_map[i].maps + ofs;
125 	}
126 
127 	if ((addr >= 0x18000000 && addr < 0x18c00000) ||
128 	    (addr >= 0x70000000 && addr < 0x78000000) ||
129 	    (addr >= 0x7c000000 && addr < 0x7c400000))
130 		return mt7921_reg_map_l1(dev, addr);
131 
132 	dev_err(dev->mt76.dev, "Access currently unsupported address %08x\n",
133 		addr);
134 
135 	return 0;
136 }
137 
138 static u32 mt7921_rr(struct mt76_dev *mdev, u32 offset)
139 {
140 	struct mt792x_dev *dev = container_of(mdev, struct mt792x_dev, mt76);
141 	u32 addr = __mt7921_reg_addr(dev, offset);
142 
143 	return dev->bus_ops->rr(mdev, addr);
144 }
145 
146 static void mt7921_wr(struct mt76_dev *mdev, u32 offset, u32 val)
147 {
148 	struct mt792x_dev *dev = container_of(mdev, struct mt792x_dev, mt76);
149 	u32 addr = __mt7921_reg_addr(dev, offset);
150 
151 	dev->bus_ops->wr(mdev, addr, val);
152 }
153 
154 static u32 mt7921_rmw(struct mt76_dev *mdev, u32 offset, u32 mask, u32 val)
155 {
156 	struct mt792x_dev *dev = container_of(mdev, struct mt792x_dev, mt76);
157 	u32 addr = __mt7921_reg_addr(dev, offset);
158 
159 	return dev->bus_ops->rmw(mdev, addr, mask, val);
160 }
161 
162 static int mt7921_dma_init(struct mt792x_dev *dev)
163 {
164 	int ret;
165 
166 	mt76_dma_attach(&dev->mt76);
167 
168 	ret = mt792x_dma_disable(dev, true);
169 	if (ret)
170 		return ret;
171 
172 	/* init tx queue */
173 	ret = mt76_connac_init_tx_queues(dev->phy.mt76, MT7921_TXQ_BAND0,
174 					 MT7921_TX_RING_SIZE,
175 					 MT_TX_RING_BASE, NULL, 0);
176 	if (ret)
177 		return ret;
178 
179 	mt76_wr(dev, MT_WFDMA0_TX_RING0_EXT_CTRL, 0x4);
180 
181 	/* command to WM */
182 	ret = mt76_init_mcu_queue(&dev->mt76, MT_MCUQ_WM, MT7921_TXQ_MCU_WM,
183 				  MT7921_TX_MCU_RING_SIZE, MT_TX_RING_BASE);
184 	if (ret)
185 		return ret;
186 
187 	/* firmware download */
188 	ret = mt76_init_mcu_queue(&dev->mt76, MT_MCUQ_FWDL, MT7921_TXQ_FWDL,
189 				  MT7921_TX_FWDL_RING_SIZE, MT_TX_RING_BASE);
190 	if (ret)
191 		return ret;
192 
193 	/* event from WM before firmware download */
194 	ret = mt76_queue_alloc(dev, &dev->mt76.q_rx[MT_RXQ_MCU],
195 			       MT7921_RXQ_MCU_WM,
196 			       MT7921_RX_MCU_RING_SIZE,
197 			       MT_RX_BUF_SIZE, MT_RX_EVENT_RING_BASE);
198 	if (ret)
199 		return ret;
200 
201 	/* Change mcu queue after firmware download */
202 	ret = mt76_queue_alloc(dev, &dev->mt76.q_rx[MT_RXQ_MCU_WA],
203 			       MT7921_RXQ_MCU_WM,
204 			       MT7921_RX_MCU_WA_RING_SIZE,
205 			       MT_RX_BUF_SIZE, MT_WFDMA0(0x540));
206 	if (ret)
207 		return ret;
208 
209 	/* rx data */
210 	ret = mt76_queue_alloc(dev, &dev->mt76.q_rx[MT_RXQ_MAIN],
211 			       MT7921_RXQ_BAND0, MT7921_RX_RING_SIZE,
212 			       MT_RX_BUF_SIZE, MT_RX_DATA_RING_BASE);
213 	if (ret)
214 		return ret;
215 
216 	ret = mt76_init_queues(dev, mt792x_poll_rx);
217 	if (ret < 0)
218 		return ret;
219 
220 	netif_napi_add_tx(&dev->mt76.tx_napi_dev, &dev->mt76.tx_napi,
221 			  mt792x_poll_tx);
222 	napi_enable(&dev->mt76.tx_napi);
223 
224 	return mt792x_dma_enable(dev);
225 }
226 
227 static int mt7921_pci_probe(struct pci_dev *pdev,
228 			    const struct pci_device_id *id)
229 {
230 	static const struct mt76_driver_ops drv_ops = {
231 		/* txwi_size = txd size + txp size */
232 		.txwi_size = MT_TXD_SIZE + sizeof(struct mt76_connac_hw_txp),
233 		.drv_flags = MT_DRV_TXWI_NO_FREE | MT_DRV_HW_MGMT_TXQ |
234 			     MT_DRV_AMSDU_OFFLOAD,
235 		.survey_flags = SURVEY_INFO_TIME_TX |
236 				SURVEY_INFO_TIME_RX |
237 				SURVEY_INFO_TIME_BSS_RX,
238 		.token_size = MT7921_TOKEN_SIZE,
239 		.tx_prepare_skb = mt7921e_tx_prepare_skb,
240 		.tx_complete_skb = mt76_connac_tx_complete_skb,
241 		.rx_check = mt7921_rx_check,
242 		.rx_skb = mt7921_queue_rx_skb,
243 		.rx_poll_complete = mt792x_rx_poll_complete,
244 		.sta_add = mt7921_mac_sta_add,
245 		.sta_assoc = mt7921_mac_sta_assoc,
246 		.sta_remove = mt7921_mac_sta_remove,
247 		.update_survey = mt792x_update_channel,
248 	};
249 	static const struct mt792x_hif_ops mt7921_pcie_ops = {
250 		.init_reset = mt7921e_init_reset,
251 		.reset = mt7921e_mac_reset,
252 		.mcu_init = mt7921e_mcu_init,
253 		.drv_own = mt792xe_mcu_drv_pmctrl,
254 		.fw_own = mt792xe_mcu_fw_pmctrl,
255 	};
256 	static const struct mt792x_irq_map irq_map = {
257 		.host_irq_enable = MT_WFDMA0_HOST_INT_ENA,
258 		.tx = {
259 			.all_complete_mask = MT_INT_TX_DONE_ALL,
260 			.mcu_complete_mask = MT_INT_TX_DONE_MCU,
261 		},
262 		.rx = {
263 			.data_complete_mask = MT_INT_RX_DONE_DATA,
264 			.wm_complete_mask = MT_INT_RX_DONE_WM,
265 			.wm2_complete_mask = MT_INT_RX_DONE_WM2,
266 		},
267 	};
268 	struct ieee80211_ops *ops;
269 	struct mt76_bus_ops *bus_ops;
270 	struct mt792x_dev *dev;
271 	struct mt76_dev *mdev;
272 	u8 features;
273 	int ret;
274 	u16 cmd;
275 
276 	ret = pcim_enable_device(pdev);
277 	if (ret)
278 		return ret;
279 
280 	ret = pcim_iomap_regions(pdev, BIT(0), pci_name(pdev));
281 	if (ret)
282 		return ret;
283 
284 	pci_read_config_word(pdev, PCI_COMMAND, &cmd);
285 	if (!(cmd & PCI_COMMAND_MEMORY)) {
286 		cmd |= PCI_COMMAND_MEMORY;
287 		pci_write_config_word(pdev, PCI_COMMAND, cmd);
288 	}
289 	pci_set_master(pdev);
290 
291 	ret = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_ALL_TYPES);
292 	if (ret < 0)
293 		return ret;
294 
295 	ret = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
296 	if (ret)
297 		goto err_free_pci_vec;
298 
299 	if (mt7921_disable_aspm)
300 		mt76_pci_disable_aspm(pdev);
301 
302 	ops = mt792x_get_mac80211_ops(&pdev->dev, &mt7921_ops,
303 				      (void *)id->driver_data, &features);
304 	if (!ops) {
305 		ret = -ENOMEM;
306 		goto err_free_pci_vec;
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 mt792x_dev, mt76);
318 	dev->fw_features = features;
319 	dev->hif_ops = &mt7921_pcie_ops;
320 	dev->irq_map = &irq_map;
321 	mt76_mmio_init(&dev->mt76, pcim_iomap_table(pdev)[0]);
322 	tasklet_init(&mdev->irq_tasklet, mt792x_irq_tasklet, (unsigned long)dev);
323 
324 	dev->phy.dev = dev;
325 	dev->phy.mt76 = &dev->mt76.phy;
326 	dev->mt76.phy.priv = &dev->phy;
327 	dev->bus_ops = dev->mt76.bus;
328 	bus_ops = devm_kmemdup(dev->mt76.dev, dev->bus_ops, sizeof(*bus_ops),
329 			       GFP_KERNEL);
330 	if (!bus_ops) {
331 		ret = -ENOMEM;
332 		goto err_free_dev;
333 	}
334 
335 	bus_ops->rr = mt7921_rr;
336 	bus_ops->wr = mt7921_wr;
337 	bus_ops->rmw = mt7921_rmw;
338 	dev->mt76.bus = bus_ops;
339 
340 	ret = mt792xe_mcu_fw_pmctrl(dev);
341 	if (ret)
342 		goto err_free_dev;
343 
344 	ret = __mt792xe_mcu_drv_pmctrl(dev);
345 	if (ret)
346 		goto err_free_dev;
347 
348 	mdev->rev = (mt7921_l1_rr(dev, MT_HW_CHIPID) << 16) |
349 		    (mt7921_l1_rr(dev, MT_HW_REV) & 0xff);
350 	dev_info(mdev->dev, "ASIC revision: %04x\n", mdev->rev);
351 
352 	ret = mt792x_wfsys_reset(dev);
353 	if (ret)
354 		goto err_free_dev;
355 
356 	mt76_wr(dev, irq_map.host_irq_enable, 0);
357 
358 	mt76_wr(dev, MT_PCIE_MAC_INT_ENABLE, 0xff);
359 
360 	ret = devm_request_irq(mdev->dev, pdev->irq, mt792x_irq_handler,
361 			       IRQF_SHARED, KBUILD_MODNAME, dev);
362 	if (ret)
363 		goto err_free_dev;
364 
365 	ret = mt7921_dma_init(dev);
366 	if (ret)
367 		goto err_free_irq;
368 
369 	ret = mt7921_register_device(dev);
370 	if (ret)
371 		goto err_free_irq;
372 
373 	if (of_property_read_bool(dev->mt76.dev->of_node, "wakeup-source"))
374 		device_init_wakeup(dev->mt76.dev, true);
375 
376 	return 0;
377 
378 err_free_irq:
379 	devm_free_irq(&pdev->dev, pdev->irq, dev);
380 err_free_dev:
381 	mt76_free_device(&dev->mt76);
382 err_free_pci_vec:
383 	pci_free_irq_vectors(pdev);
384 
385 	return ret;
386 }
387 
388 static void mt7921_pci_remove(struct pci_dev *pdev)
389 {
390 	struct mt76_dev *mdev = pci_get_drvdata(pdev);
391 	struct mt792x_dev *dev = container_of(mdev, struct mt792x_dev, mt76);
392 
393 	if (of_property_read_bool(dev->mt76.dev->of_node, "wakeup-source"))
394 		device_init_wakeup(dev->mt76.dev, false);
395 
396 	mt7921e_unregister_device(dev);
397 	set_bit(MT76_REMOVED, &mdev->phy.state);
398 	devm_free_irq(&pdev->dev, pdev->irq, dev);
399 	mt76_free_device(&dev->mt76);
400 	pci_free_irq_vectors(pdev);
401 }
402 
403 static int mt7921_pci_suspend(struct device *device)
404 {
405 	struct pci_dev *pdev = to_pci_dev(device);
406 	struct mt76_dev *mdev = pci_get_drvdata(pdev);
407 	struct mt792x_dev *dev = container_of(mdev, struct mt792x_dev, mt76);
408 	struct mt76_connac_pm *pm = &dev->pm;
409 	int i, err;
410 
411 	pm->suspended = true;
412 	flush_work(&dev->reset_work);
413 	cancel_delayed_work_sync(&pm->ps_work);
414 	cancel_work_sync(&pm->wake_work);
415 
416 	mt7921_roc_abort_sync(dev);
417 
418 	err = mt792x_mcu_drv_pmctrl(dev);
419 	if (err < 0)
420 		goto restore_suspend;
421 
422 	wait_event_timeout(dev->wait,
423 			   !dev->regd_in_progress, 5 * HZ);
424 
425 	err = mt76_connac_mcu_set_hif_suspend(mdev, true);
426 	if (err)
427 		goto restore_suspend;
428 
429 	/* always enable deep sleep during suspend to reduce
430 	 * power consumption
431 	 */
432 	mt76_connac_mcu_set_deep_sleep(&dev->mt76, true);
433 
434 	napi_disable(&mdev->tx_napi);
435 	mt76_worker_disable(&mdev->tx_worker);
436 
437 	mt76_for_each_q_rx(mdev, i) {
438 		napi_disable(&mdev->napi[i]);
439 	}
440 
441 	/* wait until dma is idle  */
442 	mt76_poll(dev, MT_WFDMA0_GLO_CFG,
443 		  MT_WFDMA0_GLO_CFG_TX_DMA_BUSY |
444 		  MT_WFDMA0_GLO_CFG_RX_DMA_BUSY, 0, 1000);
445 
446 	/* put dma disabled */
447 	mt76_clear(dev, MT_WFDMA0_GLO_CFG,
448 		   MT_WFDMA0_GLO_CFG_TX_DMA_EN | MT_WFDMA0_GLO_CFG_RX_DMA_EN);
449 
450 	/* disable interrupt */
451 	mt76_wr(dev, dev->irq_map->host_irq_enable, 0);
452 	mt76_wr(dev, MT_PCIE_MAC_INT_ENABLE, 0x0);
453 	synchronize_irq(pdev->irq);
454 	tasklet_kill(&mdev->irq_tasklet);
455 
456 	err = mt792x_mcu_fw_pmctrl(dev);
457 	if (err)
458 		goto restore_napi;
459 
460 	return 0;
461 
462 restore_napi:
463 	mt76_for_each_q_rx(mdev, i) {
464 		napi_enable(&mdev->napi[i]);
465 	}
466 	napi_enable(&mdev->tx_napi);
467 
468 	if (!pm->ds_enable)
469 		mt76_connac_mcu_set_deep_sleep(&dev->mt76, false);
470 
471 	mt76_connac_mcu_set_hif_suspend(mdev, false);
472 
473 restore_suspend:
474 	pm->suspended = false;
475 
476 	if (err < 0)
477 		mt792x_reset(&dev->mt76);
478 
479 	return err;
480 }
481 
482 static int mt7921_pci_resume(struct device *device)
483 {
484 	struct pci_dev *pdev = to_pci_dev(device);
485 	struct mt76_dev *mdev = pci_get_drvdata(pdev);
486 	struct mt792x_dev *dev = container_of(mdev, struct mt792x_dev, mt76);
487 	struct mt76_connac_pm *pm = &dev->pm;
488 	int i, err;
489 
490 	err = mt792x_mcu_drv_pmctrl(dev);
491 	if (err < 0)
492 		goto failed;
493 
494 	mt792x_wpdma_reinit_cond(dev);
495 
496 	/* enable interrupt */
497 	mt76_wr(dev, MT_PCIE_MAC_INT_ENABLE, 0xff);
498 	mt76_connac_irq_enable(&dev->mt76,
499 			       dev->irq_map->tx.all_complete_mask |
500 			       MT_INT_RX_DONE_ALL | MT_INT_MCU_CMD);
501 	mt76_set(dev, MT_MCU2HOST_SW_INT_ENA, MT_MCU_CMD_WAKE_RX_PCIE);
502 
503 	/* put dma enabled */
504 	mt76_set(dev, MT_WFDMA0_GLO_CFG,
505 		 MT_WFDMA0_GLO_CFG_TX_DMA_EN | MT_WFDMA0_GLO_CFG_RX_DMA_EN);
506 
507 	mt76_worker_enable(&mdev->tx_worker);
508 
509 	local_bh_disable();
510 	mt76_for_each_q_rx(mdev, i) {
511 		napi_enable(&mdev->napi[i]);
512 		napi_schedule(&mdev->napi[i]);
513 	}
514 	napi_enable(&mdev->tx_napi);
515 	napi_schedule(&mdev->tx_napi);
516 	local_bh_enable();
517 
518 	/* restore previous ds setting */
519 	if (!pm->ds_enable)
520 		mt76_connac_mcu_set_deep_sleep(&dev->mt76, false);
521 
522 	err = mt76_connac_mcu_set_hif_suspend(mdev, false);
523 
524 	mt7921_regd_update(dev);
525 
526 failed:
527 	pm->suspended = false;
528 
529 	if (err < 0)
530 		mt792x_reset(&dev->mt76);
531 
532 	return err;
533 }
534 
535 static void mt7921_pci_shutdown(struct pci_dev *pdev)
536 {
537 	mt7921_pci_remove(pdev);
538 }
539 
540 static DEFINE_SIMPLE_DEV_PM_OPS(mt7921_pm_ops, mt7921_pci_suspend, mt7921_pci_resume);
541 
542 static struct pci_driver mt7921_pci_driver = {
543 	.name		= KBUILD_MODNAME,
544 	.id_table	= mt7921_pci_device_table,
545 	.probe		= mt7921_pci_probe,
546 	.remove		= mt7921_pci_remove,
547 	.shutdown	= mt7921_pci_shutdown,
548 	.driver.pm	= pm_sleep_ptr(&mt7921_pm_ops),
549 };
550 
551 module_pci_driver(mt7921_pci_driver);
552 
553 MODULE_DEVICE_TABLE(pci, mt7921_pci_device_table);
554 MODULE_FIRMWARE(MT7921_FIRMWARE_WM);
555 MODULE_FIRMWARE(MT7921_ROM_PATCH);
556 MODULE_FIRMWARE(MT7922_FIRMWARE_WM);
557 MODULE_FIRMWARE(MT7922_ROM_PATCH);
558 MODULE_AUTHOR("Sean Wang <sean.wang@mediatek.com>");
559 MODULE_AUTHOR("Lorenzo Bianconi <lorenzo@kernel.org>");
560 MODULE_DESCRIPTION("MediaTek MT7921E (PCIe) wireless driver");
561 MODULE_LICENSE("Dual BSD/GPL");
562