dmaengine: imx-sdma: Let the core do the device node validation
[linux/fpc-iii.git] / drivers / net / wireless / mediatek / mt7601u / init.c
blobfaea99b7a44518a38ba42b4a1e4cf1e081f8176e
1 /*
2 * (c) Copyright 2002-2010, Ralink Technology, Inc.
3 * Copyright (C) 2014 Felix Fietkau <nbd@openwrt.org>
4 * Copyright (C) 2015 Jakub Kicinski <kubakici@wp.pl>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2
8 * as published by the Free Software Foundation
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
16 #include "mt7601u.h"
17 #include "eeprom.h"
18 #include "trace.h"
19 #include "mcu.h"
21 #include "initvals.h"
23 static void
24 mt7601u_set_wlan_state(struct mt7601u_dev *dev, u32 val, bool enable)
26 int i;
28 /* Note: we don't turn off WLAN_CLK because that makes the device
29 * not respond properly on the probe path.
30 * In case anyone (PSM?) wants to use this function we can
31 * bring the clock stuff back and fixup the probe path.
34 if (enable)
35 val |= (MT_WLAN_FUN_CTRL_WLAN_EN |
36 MT_WLAN_FUN_CTRL_WLAN_CLK_EN);
37 else
38 val &= ~(MT_WLAN_FUN_CTRL_WLAN_EN);
40 mt7601u_wr(dev, MT_WLAN_FUN_CTRL, val);
41 udelay(20);
43 if (enable) {
44 set_bit(MT7601U_STATE_WLAN_RUNNING, &dev->state);
45 } else {
46 clear_bit(MT7601U_STATE_WLAN_RUNNING, &dev->state);
47 return;
50 for (i = 200; i; i--) {
51 val = mt7601u_rr(dev, MT_CMB_CTRL);
53 if (val & MT_CMB_CTRL_XTAL_RDY && val & MT_CMB_CTRL_PLL_LD)
54 break;
56 udelay(20);
59 /* Note: vendor driver tries to disable/enable wlan here and retry
60 * but the code which does it is so buggy it must have never
61 * triggered, so don't bother.
63 if (!i)
64 dev_err(dev->dev, "Error: PLL and XTAL check failed!\n");
67 static void mt7601u_chip_onoff(struct mt7601u_dev *dev, bool enable, bool reset)
69 u32 val;
71 mutex_lock(&dev->hw_atomic_mutex);
73 val = mt7601u_rr(dev, MT_WLAN_FUN_CTRL);
75 if (reset) {
76 val |= MT_WLAN_FUN_CTRL_GPIO_OUT_EN;
77 val &= ~MT_WLAN_FUN_CTRL_FRC_WL_ANT_SEL;
79 if (val & MT_WLAN_FUN_CTRL_WLAN_EN) {
80 val |= (MT_WLAN_FUN_CTRL_WLAN_RESET |
81 MT_WLAN_FUN_CTRL_WLAN_RESET_RF);
82 mt7601u_wr(dev, MT_WLAN_FUN_CTRL, val);
83 udelay(20);
85 val &= ~(MT_WLAN_FUN_CTRL_WLAN_RESET |
86 MT_WLAN_FUN_CTRL_WLAN_RESET_RF);
90 mt7601u_wr(dev, MT_WLAN_FUN_CTRL, val);
91 udelay(20);
93 mt7601u_set_wlan_state(dev, val, enable);
95 mutex_unlock(&dev->hw_atomic_mutex);
98 static void mt7601u_reset_csr_bbp(struct mt7601u_dev *dev)
100 mt7601u_wr(dev, MT_MAC_SYS_CTRL, (MT_MAC_SYS_CTRL_RESET_CSR |
101 MT_MAC_SYS_CTRL_RESET_BBP));
102 mt7601u_wr(dev, MT_USB_DMA_CFG, 0);
103 msleep(1);
104 mt7601u_wr(dev, MT_MAC_SYS_CTRL, 0);
107 static void mt7601u_init_usb_dma(struct mt7601u_dev *dev)
109 u32 val;
111 val = FIELD_PREP(MT_USB_DMA_CFG_RX_BULK_AGG_TOUT, MT_USB_AGGR_TIMEOUT) |
112 FIELD_PREP(MT_USB_DMA_CFG_RX_BULK_AGG_LMT,
113 MT_USB_AGGR_SIZE_LIMIT) |
114 MT_USB_DMA_CFG_RX_BULK_EN |
115 MT_USB_DMA_CFG_TX_BULK_EN;
116 if (dev->in_max_packet == 512)
117 val |= MT_USB_DMA_CFG_RX_BULK_AGG_EN;
118 mt7601u_wr(dev, MT_USB_DMA_CFG, val);
120 val |= MT_USB_DMA_CFG_UDMA_RX_WL_DROP;
121 mt7601u_wr(dev, MT_USB_DMA_CFG, val);
122 val &= ~MT_USB_DMA_CFG_UDMA_RX_WL_DROP;
123 mt7601u_wr(dev, MT_USB_DMA_CFG, val);
126 static int mt7601u_init_bbp(struct mt7601u_dev *dev)
128 int ret;
130 ret = mt7601u_wait_bbp_ready(dev);
131 if (ret)
132 return ret;
134 ret = mt7601u_write_reg_pairs(dev, MT_MCU_MEMMAP_BBP, bbp_common_vals,
135 ARRAY_SIZE(bbp_common_vals));
136 if (ret)
137 return ret;
139 return mt7601u_write_reg_pairs(dev, MT_MCU_MEMMAP_BBP, bbp_chip_vals,
140 ARRAY_SIZE(bbp_chip_vals));
143 static void
144 mt76_init_beacon_offsets(struct mt7601u_dev *dev)
146 u16 base = MT_BEACON_BASE;
147 u32 regs[4] = {};
148 int i;
150 for (i = 0; i < 16; i++) {
151 u16 addr = dev->beacon_offsets[i];
153 regs[i / 4] |= ((addr - base) / 64) << (8 * (i % 4));
156 for (i = 0; i < 4; i++)
157 mt7601u_wr(dev, MT_BCN_OFFSET(i), regs[i]);
160 static int mt7601u_write_mac_initvals(struct mt7601u_dev *dev)
162 int ret;
164 ret = mt7601u_write_reg_pairs(dev, MT_MCU_MEMMAP_WLAN, mac_common_vals,
165 ARRAY_SIZE(mac_common_vals));
166 if (ret)
167 return ret;
168 ret = mt7601u_write_reg_pairs(dev, MT_MCU_MEMMAP_WLAN,
169 mac_chip_vals, ARRAY_SIZE(mac_chip_vals));
170 if (ret)
171 return ret;
173 mt76_init_beacon_offsets(dev);
175 mt7601u_wr(dev, MT_AUX_CLK_CFG, 0);
177 return 0;
180 static int mt7601u_init_wcid_mem(struct mt7601u_dev *dev)
182 u32 *vals;
183 int i, ret;
185 vals = kmalloc(sizeof(*vals) * N_WCIDS * 2, GFP_KERNEL);
186 if (!vals)
187 return -ENOMEM;
189 for (i = 0; i < N_WCIDS; i++) {
190 vals[i * 2] = 0xffffffff;
191 vals[i * 2 + 1] = 0x00ffffff;
194 ret = mt7601u_burst_write_regs(dev, MT_WCID_ADDR_BASE,
195 vals, N_WCIDS * 2);
196 kfree(vals);
198 return ret;
201 static int mt7601u_init_key_mem(struct mt7601u_dev *dev)
203 u32 vals[4] = {};
205 return mt7601u_burst_write_regs(dev, MT_SKEY_MODE_BASE_0,
206 vals, ARRAY_SIZE(vals));
209 static int mt7601u_init_wcid_attr_mem(struct mt7601u_dev *dev)
211 u32 *vals;
212 int i, ret;
214 vals = kmalloc(sizeof(*vals) * N_WCIDS * 2, GFP_KERNEL);
215 if (!vals)
216 return -ENOMEM;
218 for (i = 0; i < N_WCIDS * 2; i++)
219 vals[i] = 1;
221 ret = mt7601u_burst_write_regs(dev, MT_WCID_ATTR_BASE,
222 vals, N_WCIDS * 2);
223 kfree(vals);
225 return ret;
228 static void mt7601u_reset_counters(struct mt7601u_dev *dev)
230 mt7601u_rr(dev, MT_RX_STA_CNT0);
231 mt7601u_rr(dev, MT_RX_STA_CNT1);
232 mt7601u_rr(dev, MT_RX_STA_CNT2);
233 mt7601u_rr(dev, MT_TX_STA_CNT0);
234 mt7601u_rr(dev, MT_TX_STA_CNT1);
235 mt7601u_rr(dev, MT_TX_STA_CNT2);
238 int mt7601u_mac_start(struct mt7601u_dev *dev)
240 mt7601u_wr(dev, MT_MAC_SYS_CTRL, MT_MAC_SYS_CTRL_ENABLE_TX);
242 if (!mt76_poll(dev, MT_WPDMA_GLO_CFG, MT_WPDMA_GLO_CFG_TX_DMA_BUSY |
243 MT_WPDMA_GLO_CFG_RX_DMA_BUSY, 0, 200000))
244 return -ETIMEDOUT;
246 dev->rxfilter = MT_RX_FILTR_CFG_CRC_ERR |
247 MT_RX_FILTR_CFG_PHY_ERR | MT_RX_FILTR_CFG_PROMISC |
248 MT_RX_FILTR_CFG_VER_ERR | MT_RX_FILTR_CFG_DUP |
249 MT_RX_FILTR_CFG_CFACK | MT_RX_FILTR_CFG_CFEND |
250 MT_RX_FILTR_CFG_ACK | MT_RX_FILTR_CFG_CTS |
251 MT_RX_FILTR_CFG_RTS | MT_RX_FILTR_CFG_PSPOLL |
252 MT_RX_FILTR_CFG_BA | MT_RX_FILTR_CFG_CTRL_RSV;
253 mt7601u_wr(dev, MT_RX_FILTR_CFG, dev->rxfilter);
255 mt7601u_wr(dev, MT_MAC_SYS_CTRL,
256 MT_MAC_SYS_CTRL_ENABLE_TX | MT_MAC_SYS_CTRL_ENABLE_RX);
258 if (!mt76_poll(dev, MT_WPDMA_GLO_CFG, MT_WPDMA_GLO_CFG_TX_DMA_BUSY |
259 MT_WPDMA_GLO_CFG_RX_DMA_BUSY, 0, 50))
260 return -ETIMEDOUT;
262 return 0;
265 static void mt7601u_mac_stop_hw(struct mt7601u_dev *dev)
267 int i, ok;
269 if (test_bit(MT7601U_STATE_REMOVED, &dev->state))
270 return;
272 mt76_clear(dev, MT_BEACON_TIME_CFG, MT_BEACON_TIME_CFG_TIMER_EN |
273 MT_BEACON_TIME_CFG_SYNC_MODE | MT_BEACON_TIME_CFG_TBTT_EN |
274 MT_BEACON_TIME_CFG_BEACON_TX);
276 if (!mt76_poll(dev, MT_USB_DMA_CFG, MT_USB_DMA_CFG_TX_BUSY, 0, 1000))
277 dev_warn(dev->dev, "Warning: TX DMA did not stop!\n");
279 /* Page count on TxQ */
280 i = 200;
281 while (i-- && ((mt76_rr(dev, 0x0438) & 0xffffffff) ||
282 (mt76_rr(dev, 0x0a30) & 0x000000ff) ||
283 (mt76_rr(dev, 0x0a34) & 0x00ff00ff)))
284 msleep(10);
286 if (!mt76_poll(dev, MT_MAC_STATUS, MT_MAC_STATUS_TX, 0, 1000))
287 dev_warn(dev->dev, "Warning: MAC TX did not stop!\n");
289 mt76_clear(dev, MT_MAC_SYS_CTRL, MT_MAC_SYS_CTRL_ENABLE_RX |
290 MT_MAC_SYS_CTRL_ENABLE_TX);
292 /* Page count on RxQ */
293 ok = 0;
294 i = 200;
295 while (i--) {
296 if (!(mt76_rr(dev, MT_RXQ_STA) & 0x00ff0000) &&
297 !mt76_rr(dev, 0x0a30) &&
298 !mt76_rr(dev, 0x0a34)) {
299 if (ok++ > 5)
300 break;
301 continue;
303 msleep(1);
306 if (!mt76_poll(dev, MT_MAC_STATUS, MT_MAC_STATUS_RX, 0, 1000))
307 dev_warn(dev->dev, "Warning: MAC RX did not stop!\n");
309 if (!mt76_poll(dev, MT_USB_DMA_CFG, MT_USB_DMA_CFG_RX_BUSY, 0, 1000))
310 dev_warn(dev->dev, "Warning: RX DMA did not stop!\n");
313 void mt7601u_mac_stop(struct mt7601u_dev *dev)
315 mt7601u_mac_stop_hw(dev);
316 flush_delayed_work(&dev->stat_work);
317 cancel_delayed_work_sync(&dev->stat_work);
320 static void mt7601u_stop_hardware(struct mt7601u_dev *dev)
322 mt7601u_chip_onoff(dev, false, false);
325 int mt7601u_init_hardware(struct mt7601u_dev *dev)
327 static const u16 beacon_offsets[16] = {
328 /* 512 byte per beacon */
329 0xc000, 0xc200, 0xc400, 0xc600,
330 0xc800, 0xca00, 0xcc00, 0xce00,
331 0xd000, 0xd200, 0xd400, 0xd600,
332 0xd800, 0xda00, 0xdc00, 0xde00
334 int ret;
336 dev->beacon_offsets = beacon_offsets;
338 mt7601u_chip_onoff(dev, true, false);
340 ret = mt7601u_wait_asic_ready(dev);
341 if (ret)
342 goto err;
343 ret = mt7601u_mcu_init(dev);
344 if (ret)
345 goto err;
347 if (!mt76_poll_msec(dev, MT_WPDMA_GLO_CFG,
348 MT_WPDMA_GLO_CFG_TX_DMA_BUSY |
349 MT_WPDMA_GLO_CFG_RX_DMA_BUSY, 0, 100)) {
350 ret = -EIO;
351 goto err;
354 /* Wait for ASIC ready after FW load. */
355 ret = mt7601u_wait_asic_ready(dev);
356 if (ret)
357 goto err;
359 mt7601u_reset_csr_bbp(dev);
360 mt7601u_init_usb_dma(dev);
362 ret = mt7601u_mcu_cmd_init(dev);
363 if (ret)
364 goto err;
365 ret = mt7601u_dma_init(dev);
366 if (ret)
367 goto err_mcu;
368 ret = mt7601u_write_mac_initvals(dev);
369 if (ret)
370 goto err_rx;
372 if (!mt76_poll_msec(dev, MT_MAC_STATUS,
373 MT_MAC_STATUS_TX | MT_MAC_STATUS_RX, 0, 100)) {
374 ret = -EIO;
375 goto err_rx;
378 ret = mt7601u_init_bbp(dev);
379 if (ret)
380 goto err_rx;
381 ret = mt7601u_init_wcid_mem(dev);
382 if (ret)
383 goto err_rx;
384 ret = mt7601u_init_key_mem(dev);
385 if (ret)
386 goto err_rx;
387 ret = mt7601u_init_wcid_attr_mem(dev);
388 if (ret)
389 goto err_rx;
391 mt76_clear(dev, MT_BEACON_TIME_CFG, (MT_BEACON_TIME_CFG_TIMER_EN |
392 MT_BEACON_TIME_CFG_SYNC_MODE |
393 MT_BEACON_TIME_CFG_TBTT_EN |
394 MT_BEACON_TIME_CFG_BEACON_TX));
396 mt7601u_reset_counters(dev);
398 mt7601u_rmw(dev, MT_US_CYC_CFG, MT_US_CYC_CNT, 0x1e);
400 mt7601u_wr(dev, MT_TXOP_CTRL_CFG,
401 FIELD_PREP(MT_TXOP_TRUN_EN, 0x3f) |
402 FIELD_PREP(MT_TXOP_EXT_CCA_DLY, 0x58));
404 ret = mt7601u_eeprom_init(dev);
405 if (ret)
406 goto err_rx;
408 ret = mt7601u_phy_init(dev);
409 if (ret)
410 goto err_rx;
412 mt7601u_set_rx_path(dev, 0);
413 mt7601u_set_tx_dac(dev, 0);
415 mt7601u_mac_set_ctrlch(dev, false);
416 mt7601u_bbp_set_ctrlch(dev, false);
417 mt7601u_bbp_set_bw(dev, MT_BW_20);
419 return 0;
421 err_rx:
422 mt7601u_dma_cleanup(dev);
423 err_mcu:
424 mt7601u_mcu_cmd_deinit(dev);
425 err:
426 mt7601u_chip_onoff(dev, false, false);
427 return ret;
430 void mt7601u_cleanup(struct mt7601u_dev *dev)
432 if (!test_and_clear_bit(MT7601U_STATE_INITIALIZED, &dev->state))
433 return;
435 mt7601u_stop_hardware(dev);
436 mt7601u_dma_cleanup(dev);
437 mt7601u_mcu_cmd_deinit(dev);
440 struct mt7601u_dev *mt7601u_alloc_device(struct device *pdev)
442 struct ieee80211_hw *hw;
443 struct mt7601u_dev *dev;
445 hw = ieee80211_alloc_hw(sizeof(*dev), &mt7601u_ops);
446 if (!hw)
447 return NULL;
449 dev = hw->priv;
450 dev->dev = pdev;
451 dev->hw = hw;
452 mutex_init(&dev->vendor_req_mutex);
453 mutex_init(&dev->reg_atomic_mutex);
454 mutex_init(&dev->hw_atomic_mutex);
455 mutex_init(&dev->mutex);
456 spin_lock_init(&dev->tx_lock);
457 spin_lock_init(&dev->rx_lock);
458 spin_lock_init(&dev->lock);
459 spin_lock_init(&dev->mac_lock);
460 spin_lock_init(&dev->con_mon_lock);
461 atomic_set(&dev->avg_ampdu_len, 1);
462 skb_queue_head_init(&dev->tx_skb_done);
464 dev->stat_wq = alloc_workqueue("mt7601u", WQ_UNBOUND, 0);
465 if (!dev->stat_wq) {
466 ieee80211_free_hw(hw);
467 return NULL;
470 return dev;
473 #define CHAN2G(_idx, _freq) { \
474 .band = NL80211_BAND_2GHZ, \
475 .center_freq = (_freq), \
476 .hw_value = (_idx), \
477 .max_power = 30, \
480 static const struct ieee80211_channel mt76_channels_2ghz[] = {
481 CHAN2G(1, 2412),
482 CHAN2G(2, 2417),
483 CHAN2G(3, 2422),
484 CHAN2G(4, 2427),
485 CHAN2G(5, 2432),
486 CHAN2G(6, 2437),
487 CHAN2G(7, 2442),
488 CHAN2G(8, 2447),
489 CHAN2G(9, 2452),
490 CHAN2G(10, 2457),
491 CHAN2G(11, 2462),
492 CHAN2G(12, 2467),
493 CHAN2G(13, 2472),
494 CHAN2G(14, 2484),
497 #define CCK_RATE(_idx, _rate) { \
498 .bitrate = _rate, \
499 .flags = IEEE80211_RATE_SHORT_PREAMBLE, \
500 .hw_value = (MT_PHY_TYPE_CCK << 8) | _idx, \
501 .hw_value_short = (MT_PHY_TYPE_CCK << 8) | (8 + _idx), \
504 #define OFDM_RATE(_idx, _rate) { \
505 .bitrate = _rate, \
506 .hw_value = (MT_PHY_TYPE_OFDM << 8) | _idx, \
507 .hw_value_short = (MT_PHY_TYPE_OFDM << 8) | _idx, \
510 static struct ieee80211_rate mt76_rates[] = {
511 CCK_RATE(0, 10),
512 CCK_RATE(1, 20),
513 CCK_RATE(2, 55),
514 CCK_RATE(3, 110),
515 OFDM_RATE(0, 60),
516 OFDM_RATE(1, 90),
517 OFDM_RATE(2, 120),
518 OFDM_RATE(3, 180),
519 OFDM_RATE(4, 240),
520 OFDM_RATE(5, 360),
521 OFDM_RATE(6, 480),
522 OFDM_RATE(7, 540),
525 static int
526 mt76_init_sband(struct mt7601u_dev *dev, struct ieee80211_supported_band *sband,
527 const struct ieee80211_channel *chan, int n_chan,
528 struct ieee80211_rate *rates, int n_rates)
530 struct ieee80211_sta_ht_cap *ht_cap;
531 void *chanlist;
532 int size;
534 size = n_chan * sizeof(*chan);
535 chanlist = devm_kmemdup(dev->dev, chan, size, GFP_KERNEL);
536 if (!chanlist)
537 return -ENOMEM;
539 sband->channels = chanlist;
540 sband->n_channels = n_chan;
541 sband->bitrates = rates;
542 sband->n_bitrates = n_rates;
544 ht_cap = &sband->ht_cap;
545 ht_cap->ht_supported = true;
546 ht_cap->cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
547 IEEE80211_HT_CAP_GRN_FLD |
548 IEEE80211_HT_CAP_SGI_20 |
549 IEEE80211_HT_CAP_SGI_40 |
550 (1 << IEEE80211_HT_CAP_RX_STBC_SHIFT);
552 ht_cap->mcs.rx_mask[0] = 0xff;
553 ht_cap->mcs.rx_mask[4] = 0x1;
554 ht_cap->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
555 ht_cap->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
556 ht_cap->ampdu_density = IEEE80211_HT_MPDU_DENSITY_2;
558 dev->chandef.chan = &sband->channels[0];
560 return 0;
563 static int
564 mt76_init_sband_2g(struct mt7601u_dev *dev)
566 dev->sband_2g = devm_kzalloc(dev->dev, sizeof(*dev->sband_2g),
567 GFP_KERNEL);
568 dev->hw->wiphy->bands[NL80211_BAND_2GHZ] = dev->sband_2g;
570 WARN_ON(dev->ee->reg.start - 1 + dev->ee->reg.num >
571 ARRAY_SIZE(mt76_channels_2ghz));
573 return mt76_init_sband(dev, dev->sband_2g,
574 &mt76_channels_2ghz[dev->ee->reg.start - 1],
575 dev->ee->reg.num,
576 mt76_rates, ARRAY_SIZE(mt76_rates));
579 int mt7601u_register_device(struct mt7601u_dev *dev)
581 struct ieee80211_hw *hw = dev->hw;
582 struct wiphy *wiphy = hw->wiphy;
583 int ret;
585 /* Reserve WCID 0 for mcast - thanks to this APs WCID will go to
586 * entry no. 1 like it does in the vendor driver.
588 dev->wcid_mask[0] |= 1;
590 /* init fake wcid for monitor interfaces */
591 dev->mon_wcid = devm_kmalloc(dev->dev, sizeof(*dev->mon_wcid),
592 GFP_KERNEL);
593 if (!dev->mon_wcid)
594 return -ENOMEM;
595 dev->mon_wcid->idx = 0xff;
596 dev->mon_wcid->hw_key_idx = -1;
598 SET_IEEE80211_DEV(hw, dev->dev);
600 hw->queues = 4;
601 ieee80211_hw_set(hw, SIGNAL_DBM);
602 ieee80211_hw_set(hw, PS_NULLFUNC_STACK);
603 ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
604 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
605 ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
606 ieee80211_hw_set(hw, MFP_CAPABLE);
607 hw->max_rates = 1;
608 hw->max_report_rates = 7;
609 hw->max_rate_tries = 1;
611 hw->sta_data_size = sizeof(struct mt76_sta);
612 hw->vif_data_size = sizeof(struct mt76_vif);
614 SET_IEEE80211_PERM_ADDR(hw, dev->macaddr);
616 wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR;
617 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
619 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
621 ret = mt76_init_sband_2g(dev);
622 if (ret)
623 return ret;
625 INIT_DELAYED_WORK(&dev->mac_work, mt7601u_mac_work);
626 INIT_DELAYED_WORK(&dev->stat_work, mt7601u_tx_stat);
628 ret = ieee80211_register_hw(hw);
629 if (ret)
630 return ret;
632 mt7601u_init_debugfs(dev);
634 return 0;