2 * Copyright (c) 2010 Atheros Communications Inc.
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19 MODULE_AUTHOR("Atheros Communications");
20 MODULE_LICENSE("Dual BSD/GPL");
21 MODULE_DESCRIPTION("Atheros driver 802.11n HTC based wireless devices");
23 static unsigned int ath9k_debug = ATH_DBG_DEFAULT;
24 module_param_named(debug, ath9k_debug, uint, 0);
25 MODULE_PARM_DESC(debug, "Debugging mask");
27 int htc_modparam_nohwcrypt;
28 module_param_named(nohwcrypt, htc_modparam_nohwcrypt, int, 0444);
29 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption");
31 #define CHAN2G(_freq, _idx) { \
32 .center_freq = (_freq), \
37 static struct ieee80211_channel ath9k_2ghz_channels[] = {
38 CHAN2G(2412, 0), /* Channel 1 */
39 CHAN2G(2417, 1), /* Channel 2 */
40 CHAN2G(2422, 2), /* Channel 3 */
41 CHAN2G(2427, 3), /* Channel 4 */
42 CHAN2G(2432, 4), /* Channel 5 */
43 CHAN2G(2437, 5), /* Channel 6 */
44 CHAN2G(2442, 6), /* Channel 7 */
45 CHAN2G(2447, 7), /* Channel 8 */
46 CHAN2G(2452, 8), /* Channel 9 */
47 CHAN2G(2457, 9), /* Channel 10 */
48 CHAN2G(2462, 10), /* Channel 11 */
49 CHAN2G(2467, 11), /* Channel 12 */
50 CHAN2G(2472, 12), /* Channel 13 */
51 CHAN2G(2484, 13), /* Channel 14 */
54 /* Atheros hardware rate code addition for short premble */
55 #define SHPCHECK(__hw_rate, __flags) \
56 ((__flags & IEEE80211_RATE_SHORT_PREAMBLE) ? (__hw_rate | 0x04) : 0)
58 #define RATE(_bitrate, _hw_rate, _flags) { \
59 .bitrate = (_bitrate), \
61 .hw_value = (_hw_rate), \
62 .hw_value_short = (SHPCHECK(_hw_rate, _flags)) \
65 static struct ieee80211_rate ath9k_legacy_rates[] = {
67 RATE(20, 0x1a, IEEE80211_RATE_SHORT_PREAMBLE), /* shortp : 0x1e */
68 RATE(55, 0x19, IEEE80211_RATE_SHORT_PREAMBLE), /* shortp: 0x1d */
69 RATE(110, 0x18, IEEE80211_RATE_SHORT_PREAMBLE), /* short: 0x1c */
80 static int ath9k_htc_wait_for_target(struct ath9k_htc_priv *priv)
84 /* Firmware can take up to 50ms to get ready, to be safe use 1 second */
85 time_left = wait_for_completion_timeout(&priv->htc->target_wait, HZ);
87 dev_err(priv->dev, "ath9k_htc: Target is unresponsive\n");
94 static void ath9k_deinit_priv(struct ath9k_htc_priv *priv)
96 ath9k_htc_exit_debug(priv->ah);
97 ath9k_hw_deinit(priv->ah);
98 tasklet_kill(&priv->wmi_tasklet);
99 tasklet_kill(&priv->rx_tasklet);
100 tasklet_kill(&priv->tx_tasklet);
105 static void ath9k_deinit_device(struct ath9k_htc_priv *priv)
107 struct ieee80211_hw *hw = priv->hw;
109 wiphy_rfkill_stop_polling(hw->wiphy);
110 ath9k_deinit_leds(priv);
111 ieee80211_unregister_hw(hw);
112 ath9k_rx_cleanup(priv);
113 ath9k_tx_cleanup(priv);
114 ath9k_deinit_priv(priv);
117 static inline int ath9k_htc_connect_svc(struct ath9k_htc_priv *priv,
121 enum htc_endpoint_id,
123 enum htc_endpoint_id *ep_id)
125 struct htc_service_connreq req;
127 memset(&req, 0, sizeof(struct htc_service_connreq));
129 req.service_id = service_id;
130 req.ep_callbacks.priv = priv;
131 req.ep_callbacks.rx = ath9k_htc_rxep;
132 req.ep_callbacks.tx = tx;
134 return htc_connect_service(priv->htc, &req, ep_id);
137 static int ath9k_init_htc_services(struct ath9k_htc_priv *priv)
142 ret = ath9k_wmi_connect(priv->htc, priv->wmi, &priv->wmi_cmd_ep);
147 ret = ath9k_htc_connect_svc(priv, WMI_BEACON_SVC, ath9k_htc_beaconep,
153 ret = ath9k_htc_connect_svc(priv, WMI_CAB_SVC, ath9k_htc_txep,
160 ret = ath9k_htc_connect_svc(priv, WMI_UAPSD_SVC, ath9k_htc_txep,
166 ret = ath9k_htc_connect_svc(priv, WMI_MGMT_SVC, ath9k_htc_txep,
172 ret = ath9k_htc_connect_svc(priv, WMI_DATA_BE_SVC, ath9k_htc_txep,
178 ret = ath9k_htc_connect_svc(priv, WMI_DATA_BK_SVC, ath9k_htc_txep,
184 ret = ath9k_htc_connect_svc(priv, WMI_DATA_VI_SVC, ath9k_htc_txep,
190 ret = ath9k_htc_connect_svc(priv, WMI_DATA_VO_SVC, ath9k_htc_txep,
195 ret = htc_init(priv->htc);
202 dev_err(priv->dev, "ath9k_htc: Unable to initialize HTC services\n");
206 static int ath9k_reg_notifier(struct wiphy *wiphy,
207 struct regulatory_request *request)
209 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
210 struct ath9k_htc_priv *priv = hw->priv;
212 return ath_reg_notifier_apply(wiphy, request,
213 ath9k_hw_regulatory(priv->ah));
216 static unsigned int ath9k_regread(void *hw_priv, u32 reg_offset)
218 struct ath_hw *ah = (struct ath_hw *) hw_priv;
219 struct ath_common *common = ath9k_hw_common(ah);
220 struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
221 __be32 val, reg = cpu_to_be32(reg_offset);
224 r = ath9k_wmi_cmd(priv->wmi, WMI_REG_READ_CMDID,
225 (u8 *) ®, sizeof(reg),
226 (u8 *) &val, sizeof(val),
229 ath_print(common, ATH_DBG_WMI,
230 "REGISTER READ FAILED: (0x%04x, %d)\n",
235 return be32_to_cpu(val);
238 static void ath9k_regwrite_single(void *hw_priv, u32 val, u32 reg_offset)
240 struct ath_hw *ah = (struct ath_hw *) hw_priv;
241 struct ath_common *common = ath9k_hw_common(ah);
242 struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
244 cpu_to_be32(reg_offset),
249 r = ath9k_wmi_cmd(priv->wmi, WMI_REG_WRITE_CMDID,
250 (u8 *) &buf, sizeof(buf),
251 (u8 *) &val, sizeof(val),
254 ath_print(common, ATH_DBG_WMI,
255 "REGISTER WRITE FAILED:(0x%04x, %d)\n",
260 static void ath9k_regwrite_buffer(void *hw_priv, u32 val, u32 reg_offset)
262 struct ath_hw *ah = (struct ath_hw *) hw_priv;
263 struct ath_common *common = ath9k_hw_common(ah);
264 struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
268 mutex_lock(&priv->wmi->multi_write_mutex);
270 /* Store the register/value */
271 priv->wmi->multi_write[priv->wmi->multi_write_idx].reg =
272 cpu_to_be32(reg_offset);
273 priv->wmi->multi_write[priv->wmi->multi_write_idx].val =
276 priv->wmi->multi_write_idx++;
278 /* If the buffer is full, send it out. */
279 if (priv->wmi->multi_write_idx == MAX_CMD_NUMBER) {
280 r = ath9k_wmi_cmd(priv->wmi, WMI_REG_WRITE_CMDID,
281 (u8 *) &priv->wmi->multi_write,
282 sizeof(struct register_write) * priv->wmi->multi_write_idx,
283 (u8 *) &rsp_status, sizeof(rsp_status),
286 ath_print(common, ATH_DBG_WMI,
287 "REGISTER WRITE FAILED, multi len: %d\n",
288 priv->wmi->multi_write_idx);
290 priv->wmi->multi_write_idx = 0;
293 mutex_unlock(&priv->wmi->multi_write_mutex);
296 static void ath9k_regwrite(void *hw_priv, u32 val, u32 reg_offset)
298 struct ath_hw *ah = (struct ath_hw *) hw_priv;
299 struct ath_common *common = ath9k_hw_common(ah);
300 struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
302 if (atomic_read(&priv->wmi->mwrite_cnt))
303 ath9k_regwrite_buffer(hw_priv, val, reg_offset);
305 ath9k_regwrite_single(hw_priv, val, reg_offset);
308 static void ath9k_enable_regwrite_buffer(void *hw_priv)
310 struct ath_hw *ah = (struct ath_hw *) hw_priv;
311 struct ath_common *common = ath9k_hw_common(ah);
312 struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
314 atomic_inc(&priv->wmi->mwrite_cnt);
317 static void ath9k_disable_regwrite_buffer(void *hw_priv)
319 struct ath_hw *ah = (struct ath_hw *) hw_priv;
320 struct ath_common *common = ath9k_hw_common(ah);
321 struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
323 atomic_dec(&priv->wmi->mwrite_cnt);
326 static void ath9k_regwrite_flush(void *hw_priv)
328 struct ath_hw *ah = (struct ath_hw *) hw_priv;
329 struct ath_common *common = ath9k_hw_common(ah);
330 struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
334 mutex_lock(&priv->wmi->multi_write_mutex);
336 if (priv->wmi->multi_write_idx) {
337 r = ath9k_wmi_cmd(priv->wmi, WMI_REG_WRITE_CMDID,
338 (u8 *) &priv->wmi->multi_write,
339 sizeof(struct register_write) * priv->wmi->multi_write_idx,
340 (u8 *) &rsp_status, sizeof(rsp_status),
343 ath_print(common, ATH_DBG_WMI,
344 "REGISTER WRITE FAILED, multi len: %d\n",
345 priv->wmi->multi_write_idx);
347 priv->wmi->multi_write_idx = 0;
350 mutex_unlock(&priv->wmi->multi_write_mutex);
353 static const struct ath_ops ath9k_common_ops = {
354 .read = ath9k_regread,
355 .write = ath9k_regwrite,
356 .enable_write_buffer = ath9k_enable_regwrite_buffer,
357 .disable_write_buffer = ath9k_disable_regwrite_buffer,
358 .write_flush = ath9k_regwrite_flush,
361 static void ath_usb_read_cachesize(struct ath_common *common, int *csz)
363 *csz = L1_CACHE_BYTES >> 2;
366 static bool ath_usb_eeprom_read(struct ath_common *common, u32 off, u16 *data)
368 struct ath_hw *ah = (struct ath_hw *) common->ah;
370 (void)REG_READ(ah, AR5416_EEPROM_OFFSET + (off << AR5416_EEPROM_S));
372 if (!ath9k_hw_wait(ah,
373 AR_EEPROM_STATUS_DATA,
374 AR_EEPROM_STATUS_DATA_BUSY |
375 AR_EEPROM_STATUS_DATA_PROT_ACCESS, 0,
379 *data = MS(REG_READ(ah, AR_EEPROM_STATUS_DATA),
380 AR_EEPROM_STATUS_DATA_VAL);
385 static const struct ath_bus_ops ath9k_usb_bus_ops = {
386 .ath_bus_type = ATH_USB,
387 .read_cachesize = ath_usb_read_cachesize,
388 .eeprom_read = ath_usb_eeprom_read,
391 static void setup_ht_cap(struct ath9k_htc_priv *priv,
392 struct ieee80211_sta_ht_cap *ht_info)
394 ht_info->ht_supported = true;
395 ht_info->cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
396 IEEE80211_HT_CAP_SM_PS |
397 IEEE80211_HT_CAP_SGI_40 |
398 IEEE80211_HT_CAP_DSSSCCK40;
400 ht_info->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
401 ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_8;
403 memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
404 ht_info->mcs.rx_mask[0] = 0xff;
405 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_DEFINED;
408 static int ath9k_init_queues(struct ath9k_htc_priv *priv)
410 struct ath_common *common = ath9k_hw_common(priv->ah);
413 for (i = 0; i < ARRAY_SIZE(priv->hwq_map); i++)
414 priv->hwq_map[i] = -1;
416 if (!ath9k_htc_txq_setup(priv, ATH9K_WME_AC_BE)) {
417 ath_print(common, ATH_DBG_FATAL,
418 "Unable to setup xmit queue for BE traffic\n");
422 if (!ath9k_htc_txq_setup(priv, ATH9K_WME_AC_BK)) {
423 ath_print(common, ATH_DBG_FATAL,
424 "Unable to setup xmit queue for BK traffic\n");
427 if (!ath9k_htc_txq_setup(priv, ATH9K_WME_AC_VI)) {
428 ath_print(common, ATH_DBG_FATAL,
429 "Unable to setup xmit queue for VI traffic\n");
432 if (!ath9k_htc_txq_setup(priv, ATH9K_WME_AC_VO)) {
433 ath_print(common, ATH_DBG_FATAL,
434 "Unable to setup xmit queue for VO traffic\n");
444 static void ath9k_init_crypto(struct ath9k_htc_priv *priv)
446 struct ath_common *common = ath9k_hw_common(priv->ah);
449 /* Get the hardware key cache size. */
450 common->keymax = priv->ah->caps.keycache_size;
451 if (common->keymax > ATH_KEYMAX) {
452 ath_print(common, ATH_DBG_ANY,
453 "Warning, using only %u entries in %u key cache\n",
454 ATH_KEYMAX, common->keymax);
455 common->keymax = ATH_KEYMAX;
459 * Reset the key cache since some parts do not
460 * reset the contents on initial power up.
462 for (i = 0; i < common->keymax; i++)
463 ath9k_hw_keyreset(priv->ah, (u16) i);
465 if (ath9k_hw_getcapability(priv->ah, ATH9K_CAP_CIPHER,
466 ATH9K_CIPHER_TKIP, NULL)) {
468 * Whether we should enable h/w TKIP MIC.
469 * XXX: if we don't support WME TKIP MIC, then we wouldn't
470 * report WMM capable, so it's always safe to turn on
471 * TKIP MIC in this case.
473 ath9k_hw_setcapability(priv->ah, ATH9K_CAP_TKIP_MIC, 0, 1, NULL);
477 * Check whether the separate key cache entries
478 * are required to handle both tx+rx MIC keys.
479 * With split mic keys the number of stations is limited
480 * to 27 otherwise 59.
482 if (ath9k_hw_getcapability(priv->ah, ATH9K_CAP_CIPHER,
483 ATH9K_CIPHER_TKIP, NULL)
484 && ath9k_hw_getcapability(priv->ah, ATH9K_CAP_CIPHER,
485 ATH9K_CIPHER_MIC, NULL)
486 && ath9k_hw_getcapability(priv->ah, ATH9K_CAP_TKIP_SPLIT,
488 common->splitmic = 1;
490 /* turn on mcast key search if possible */
491 if (!ath9k_hw_getcapability(priv->ah, ATH9K_CAP_MCAST_KEYSRCH, 0, NULL))
492 (void)ath9k_hw_setcapability(priv->ah, ATH9K_CAP_MCAST_KEYSRCH,
496 static void ath9k_init_channels_rates(struct ath9k_htc_priv *priv)
498 if (test_bit(ATH9K_MODE_11G, priv->ah->caps.wireless_modes)) {
499 priv->sbands[IEEE80211_BAND_2GHZ].channels =
501 priv->sbands[IEEE80211_BAND_2GHZ].band = IEEE80211_BAND_2GHZ;
502 priv->sbands[IEEE80211_BAND_2GHZ].n_channels =
503 ARRAY_SIZE(ath9k_2ghz_channels);
504 priv->sbands[IEEE80211_BAND_2GHZ].bitrates = ath9k_legacy_rates;
505 priv->sbands[IEEE80211_BAND_2GHZ].n_bitrates =
506 ARRAY_SIZE(ath9k_legacy_rates);
510 static void ath9k_init_misc(struct ath9k_htc_priv *priv)
512 struct ath_common *common = ath9k_hw_common(priv->ah);
514 common->tx_chainmask = priv->ah->caps.tx_chainmask;
515 common->rx_chainmask = priv->ah->caps.rx_chainmask;
517 if (priv->ah->caps.hw_caps & ATH9K_HW_CAP_BSSIDMASK)
518 memcpy(common->bssidmask, ath_bcast_mac, ETH_ALEN);
520 priv->op_flags |= OP_TXAGGR;
521 priv->ah->opmode = NL80211_IFTYPE_STATION;
524 static int ath9k_init_priv(struct ath9k_htc_priv *priv, u16 devid)
526 struct ath_hw *ah = NULL;
527 struct ath_common *common;
528 int ret = 0, csz = 0;
530 priv->op_flags |= OP_INVALID;
532 ah = kzalloc(sizeof(struct ath_hw), GFP_KERNEL);
536 ah->hw_version.devid = devid;
537 ah->hw_version.subsysid = 0; /* FIXME */
540 common = ath9k_hw_common(ah);
541 common->ops = &ath9k_common_ops;
542 common->bus_ops = &ath9k_usb_bus_ops;
544 common->hw = priv->hw;
546 common->debug_mask = ath9k_debug;
548 spin_lock_init(&priv->wmi->wmi_lock);
549 spin_lock_init(&priv->beacon_lock);
550 spin_lock_init(&priv->tx_lock);
551 mutex_init(&priv->mutex);
552 mutex_init(&priv->aggr_work.mutex);
553 mutex_init(&priv->htc_pm_lock);
554 tasklet_init(&priv->wmi_tasklet, ath9k_wmi_tasklet,
555 (unsigned long)priv);
556 tasklet_init(&priv->rx_tasklet, ath9k_rx_tasklet,
557 (unsigned long)priv);
558 tasklet_init(&priv->tx_tasklet, ath9k_tx_tasklet, (unsigned long)priv);
559 INIT_DELAYED_WORK(&priv->ath9k_aggr_work, ath9k_htc_aggr_work);
560 INIT_DELAYED_WORK(&priv->ath9k_ani_work, ath9k_ani_work);
561 INIT_WORK(&priv->ps_work, ath9k_ps_work);
564 * Cache line size is used to size and align various
565 * structures used to communicate with the hardware.
567 ath_read_cachesize(common, &csz);
568 common->cachelsz = csz << 2; /* convert to bytes */
570 ret = ath9k_hw_init(ah);
572 ath_print(common, ATH_DBG_FATAL,
573 "Unable to initialize hardware; "
574 "initialization status: %d\n", ret);
578 ret = ath9k_htc_init_debug(ah);
580 ath_print(common, ATH_DBG_FATAL,
581 "Unable to create debugfs files\n");
585 ret = ath9k_init_queues(priv);
589 ath9k_init_crypto(priv);
590 ath9k_init_channels_rates(priv);
591 ath9k_init_misc(priv);
596 ath9k_htc_exit_debug(ah);
607 static void ath9k_set_hw_capab(struct ath9k_htc_priv *priv,
608 struct ieee80211_hw *hw)
610 struct ath_common *common = ath9k_hw_common(priv->ah);
612 hw->flags = IEEE80211_HW_SIGNAL_DBM |
613 IEEE80211_HW_AMPDU_AGGREGATION |
614 IEEE80211_HW_SPECTRUM_MGMT |
615 IEEE80211_HW_HAS_RATE_CONTROL |
616 IEEE80211_HW_RX_INCLUDES_FCS |
617 IEEE80211_HW_SUPPORTS_PS |
618 IEEE80211_HW_PS_NULLFUNC_STACK;
620 hw->wiphy->interface_modes =
621 BIT(NL80211_IFTYPE_STATION) |
622 BIT(NL80211_IFTYPE_ADHOC);
624 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
627 hw->channel_change_time = 5000;
628 hw->max_listen_interval = 10;
629 hw->vif_data_size = sizeof(struct ath9k_htc_vif);
630 hw->sta_data_size = sizeof(struct ath9k_htc_sta);
632 /* tx_frame_hdr is larger than tx_mgmt_hdr anyway */
633 hw->extra_tx_headroom = sizeof(struct tx_frame_hdr) +
634 sizeof(struct htc_frame_hdr) + 4;
636 if (test_bit(ATH9K_MODE_11G, priv->ah->caps.wireless_modes))
637 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
638 &priv->sbands[IEEE80211_BAND_2GHZ];
640 if (priv->ah->caps.hw_caps & ATH9K_HW_CAP_HT) {
641 if (test_bit(ATH9K_MODE_11G, priv->ah->caps.wireless_modes))
643 &priv->sbands[IEEE80211_BAND_2GHZ].ht_cap);
646 SET_IEEE80211_PERM_ADDR(hw, common->macaddr);
649 static int ath9k_init_device(struct ath9k_htc_priv *priv, u16 devid)
651 struct ieee80211_hw *hw = priv->hw;
652 struct ath_common *common;
655 struct ath_regulatory *reg;
657 /* Bring up device */
658 error = ath9k_init_priv(priv, devid);
663 common = ath9k_hw_common(ah);
664 ath9k_set_hw_capab(priv, hw);
666 /* Initialize regulatory */
667 error = ath_regd_init(&common->regulatory, priv->hw->wiphy,
672 reg = &common->regulatory;
675 error = ath9k_tx_init(priv);
680 error = ath9k_rx_init(priv);
684 /* Register with mac80211 */
685 error = ieee80211_register_hw(hw);
689 /* Handle world regulatory */
690 if (!ath_is_world_regd(reg)) {
691 error = regulatory_hint(hw->wiphy, reg->alpha2);
696 ath9k_init_leds(priv);
697 ath9k_start_rfkill_poll(priv);
702 ieee80211_unregister_hw(hw);
704 ath9k_rx_cleanup(priv);
706 ath9k_tx_cleanup(priv);
710 ath9k_deinit_priv(priv);
715 int ath9k_htc_probe_device(struct htc_target *htc_handle, struct device *dev,
718 struct ieee80211_hw *hw;
719 struct ath9k_htc_priv *priv;
722 hw = ieee80211_alloc_hw(sizeof(struct ath9k_htc_priv), &ath9k_htc_ops);
728 priv->htc = htc_handle;
730 htc_handle->drv_priv = priv;
731 SET_IEEE80211_DEV(hw, priv->dev);
733 ret = ath9k_htc_wait_for_target(priv);
737 priv->wmi = ath9k_init_wmi(priv);
743 ret = ath9k_init_htc_services(priv);
747 /* The device may have been unplugged earlier. */
748 priv->op_flags &= ~OP_UNPLUGGED;
750 ret = ath9k_init_device(priv, devid);
757 ath9k_deinit_wmi(priv);
759 ieee80211_free_hw(hw);
763 void ath9k_htc_disconnect_device(struct htc_target *htc_handle, bool hotunplug)
765 if (htc_handle->drv_priv) {
767 /* Check if the device has been yanked out. */
769 htc_handle->drv_priv->op_flags |= OP_UNPLUGGED;
771 ath9k_deinit_device(htc_handle->drv_priv);
772 ath9k_deinit_wmi(htc_handle->drv_priv);
773 ieee80211_free_hw(htc_handle->drv_priv->hw);
778 int ath9k_htc_resume(struct htc_target *htc_handle)
782 ret = ath9k_htc_wait_for_target(htc_handle->drv_priv);
786 ret = ath9k_init_htc_services(htc_handle->drv_priv);
791 static int __init ath9k_htc_init(void)
795 error = ath9k_htc_debug_create_root();
798 "ath9k_htc: Unable to create debugfs root: %d\n",
803 error = ath9k_hif_usb_init();
806 "ath9k_htc: No USB devices found,"
807 " driver not installed.\n");
815 ath9k_htc_debug_remove_root();
819 module_init(ath9k_htc_init);
821 static void __exit ath9k_htc_exit(void)
823 ath9k_hif_usb_exit();
824 ath9k_htc_debug_remove_root();
825 printk(KERN_INFO "ath9k_htc: Driver unloaded\n");
827 module_exit(ath9k_htc_exit);