drivers/net/wireless/ath/ath9k/gpio.c

   1 /*
   2  * Copyright (c) 2008-2011 Atheros Communications Inc.
   3  *
   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.
   7  *
   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.
  15  */
  16
  17 #include "ath9k.h"
  18
  19 /********************************/
  20 /*       LED functions          */
  21 /********************************/
  22
  23 #ifdef CONFIG_MAC80211_LEDS
  24 static void ath_led_brightness(struct led_classdev *led_cdev,
  25                                enum led_brightness brightness)
  26 {
  27         struct ath_softc *sc = container_of(led_cdev, struct ath_softc, led_cdev);
  28         ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, (brightness == LED_OFF));
  29 }
  30
  31 void ath_deinit_leds(struct ath_softc *sc)
  32 {
  33         if (!sc->led_registered)
  34                 return;
  35
  36         ath_led_brightness(&sc->led_cdev, LED_OFF);
  37         led_classdev_unregister(&sc->led_cdev);
  38 }
  39
  40 void ath_init_leds(struct ath_softc *sc)
  41 {
  42         int ret;
  43
  44         if (AR_SREV_9100(sc->sc_ah))
  45                 return;
  46
  47         if (!led_blink)
  48                 sc->led_cdev.default_trigger =
  49                         ieee80211_get_radio_led_name(sc->hw);
  50
  51         snprintf(sc->led_name, sizeof(sc->led_name),
  52                 "ath9k-%s", wiphy_name(sc->hw->wiphy));
  53         sc->led_cdev.name = sc->led_name;
  54         sc->led_cdev.brightness_set = ath_led_brightness;
  55
  56         ret = led_classdev_register(wiphy_dev(sc->hw->wiphy), &sc->led_cdev);
  57         if (ret < 0)
  58                 return;
  59
  60         sc->led_registered = true;
  61 }
  62
  63 void ath_fill_led_pin(struct ath_softc *sc)
  64 {
  65         struct ath_hw *ah = sc->sc_ah;
  66
  67         if (AR_SREV_9100(ah) || (ah->led_pin >= 0))
  68                 return;
  69
  70         if (AR_SREV_9287(ah))
  71                 ah->led_pin = ATH_LED_PIN_9287;
  72         else if (AR_SREV_9485(sc->sc_ah))
  73                 ah->led_pin = ATH_LED_PIN_9485;
  74         else if (AR_SREV_9300(sc->sc_ah))
  75                 ah->led_pin = ATH_LED_PIN_9300;
  76         else if (AR_SREV_9462(sc->sc_ah) || AR_SREV_9565(sc->sc_ah))
  77                 ah->led_pin = ATH_LED_PIN_9462;
  78         else
  79                 ah->led_pin = ATH_LED_PIN_DEF;
  80
  81         /* Configure gpio 1 for output */
  82         ath9k_hw_cfg_output(ah, ah->led_pin, AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
  83
  84         /* LED off, active low */
  85         ath9k_hw_set_gpio(ah, ah->led_pin, 1);
  86 }
  87 #endif
  88
  89 /*******************/
  90 /*      Rfkill     */
  91 /*******************/
  92
  93 static bool ath_is_rfkill_set(struct ath_softc *sc)
  94 {
  95         struct ath_hw *ah = sc->sc_ah;
  96         bool is_blocked;
  97
  98         ath9k_ps_wakeup(sc);
  99         is_blocked = ath9k_hw_gpio_get(ah, ah->rfkill_gpio) ==
 100                                   ah->rfkill_polarity;
 101         ath9k_ps_restore(sc);
 102
 103         return is_blocked;
 104 }
 105
 106 void ath9k_rfkill_poll_state(struct ieee80211_hw *hw)
 107 {
 108         struct ath_softc *sc = hw->priv;
 109         bool blocked = !!ath_is_rfkill_set(sc);
 110
 111         wiphy_rfkill_set_hw_state(hw->wiphy, blocked);
 112 }
 113
 114 void ath_start_rfkill_poll(struct ath_softc *sc)
 115 {
 116         struct ath_hw *ah = sc->sc_ah;
 117
 118         if (ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
 119                 wiphy_rfkill_start_polling(sc->hw->wiphy);
 120 }
 121
 122 #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
 123
 124 /******************/
 125 /*     BTCOEX     */
 126 /******************/
 127
 128 /*
 129  * Detects if there is any priority bt traffic
 130  */
 131 static void ath_detect_bt_priority(struct ath_softc *sc)
 132 {
 133         struct ath_btcoex *btcoex = &sc->btcoex;
 134         struct ath_hw *ah = sc->sc_ah;
 135
 136         if (ath9k_hw_gpio_get(sc->sc_ah, ah->btcoex_hw.btpriority_gpio))
 137                 btcoex->bt_priority_cnt++;
 138
 139         if (time_after(jiffies, btcoex->bt_priority_time +
 140                         msecs_to_jiffies(ATH_BT_PRIORITY_TIME_THRESHOLD))) {
 141                 clear_bit(BT_OP_PRIORITY_DETECTED, &btcoex->op_flags);
 142                 clear_bit(BT_OP_SCAN, &btcoex->op_flags);
 143                 /* Detect if colocated bt started scanning */
 144                 if (btcoex->bt_priority_cnt >= ATH_BT_CNT_SCAN_THRESHOLD) {
 145                         ath_dbg(ath9k_hw_common(sc->sc_ah), BTCOEX,
 146                                 "BT scan detected\n");
 147                         set_bit(BT_OP_PRIORITY_DETECTED, &btcoex->op_flags);
 148                         set_bit(BT_OP_SCAN, &btcoex->op_flags);
 149                 } else if (btcoex->bt_priority_cnt >= ATH_BT_CNT_THRESHOLD) {
 150                         ath_dbg(ath9k_hw_common(sc->sc_ah), BTCOEX,
 151                                 "BT priority traffic detected\n");
 152                         set_bit(BT_OP_PRIORITY_DETECTED, &btcoex->op_flags);
 153                 }
 154
 155                 btcoex->bt_priority_cnt = 0;
 156                 btcoex->bt_priority_time = jiffies;
 157         }
 158 }
 159
 160 static void ath9k_gen_timer_start(struct ath_hw *ah,
 161                                   struct ath_gen_timer *timer,
 162                                   u32 trig_timeout,
 163                                   u32 timer_period)
 164 {
 165         ath9k_hw_gen_timer_start(ah, timer, trig_timeout, timer_period);
 166
 167         if ((ah->imask & ATH9K_INT_GENTIMER) == 0) {
 168                 ath9k_hw_disable_interrupts(ah);
 169                 ah->imask |= ATH9K_INT_GENTIMER;
 170                 ath9k_hw_set_interrupts(ah);
 171                 ath9k_hw_enable_interrupts(ah);
 172         }
 173 }
 174
 175 static void ath9k_gen_timer_stop(struct ath_hw *ah, struct ath_gen_timer *timer)
 176 {
 177         struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
 178
 179         ath9k_hw_gen_timer_stop(ah, timer);
 180
 181         /* if no timer is enabled, turn off interrupt mask */
 182         if (timer_table->timer_mask.val == 0) {
 183                 ath9k_hw_disable_interrupts(ah);
 184                 ah->imask &= ~ATH9K_INT_GENTIMER;
 185                 ath9k_hw_set_interrupts(ah);
 186                 ath9k_hw_enable_interrupts(ah);
 187         }
 188 }
 189
 190 static void ath_mci_ftp_adjust(struct ath_softc *sc)
 191 {
 192         struct ath_btcoex *btcoex = &sc->btcoex;
 193         struct ath_mci_profile *mci = &btcoex->mci;
 194         struct ath_hw *ah = sc->sc_ah;
 195
 196         if (btcoex->bt_wait_time > ATH_BTCOEX_RX_WAIT_TIME) {
 197                 if (ar9003_mci_state(ah, MCI_STATE_NEED_FTP_STOMP) &&
 198                     (mci->num_pan || mci->num_other_acl))
 199                         ah->btcoex_hw.mci.stomp_ftp =
 200                                 (sc->rx.num_pkts < ATH_BTCOEX_STOMP_FTP_THRESH);
 201                 else
 202                         ah->btcoex_hw.mci.stomp_ftp = false;
 203                 btcoex->bt_wait_time = 0;
 204                 sc->rx.num_pkts = 0;
 205         }
 206 }
 207
 208 /*
 209  * This is the master bt coex timer which runs for every
 210  * 45ms, bt traffic will be given priority during 55% of this
 211  * period while wlan gets remaining 45%
 212  */
 213 static void ath_btcoex_period_timer(unsigned long data)
 214 {
 215         struct ath_softc *sc = (struct ath_softc *) data;
 216         struct ath_hw *ah = sc->sc_ah;
 217         struct ath_btcoex *btcoex = &sc->btcoex;
 218         enum ath_stomp_type stomp_type;
 219         u32 timer_period;
 220         unsigned long flags;
 221
 222         spin_lock_irqsave(&sc->sc_pm_lock, flags);
 223         if (sc->sc_ah->power_mode == ATH9K_PM_NETWORK_SLEEP) {
 224                 btcoex->bt_wait_time += btcoex->btcoex_period;
 225                 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
 226                 goto skip_hw_wakeup;
 227         }
 228         spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
 229
 230         ath9k_mci_update_rssi(sc);
 231
 232         ath9k_ps_wakeup(sc);
 233
 234         if (!(ah->caps.hw_caps & ATH9K_HW_CAP_MCI))
 235                 ath_detect_bt_priority(sc);
 236
 237         if (ah->caps.hw_caps & ATH9K_HW_CAP_MCI)
 238                 ath_mci_ftp_adjust(sc);
 239
 240         spin_lock_bh(&btcoex->btcoex_lock);
 241
 242         stomp_type = btcoex->bt_stomp_type;
 243         timer_period = btcoex->btcoex_no_stomp;
 244
 245         if (!(ah->caps.hw_caps & ATH9K_HW_CAP_MCI)) {
 246                 if (test_bit(BT_OP_SCAN, &btcoex->op_flags)) {
 247                         stomp_type = ATH_BTCOEX_STOMP_ALL;
 248                         timer_period = btcoex->btscan_no_stomp;
 249                 }
 250         }
 251
 252         ath9k_hw_btcoex_bt_stomp(ah, stomp_type);
 253         ath9k_hw_btcoex_enable(ah);
 254
 255         spin_unlock_bh(&btcoex->btcoex_lock);
 256
 257         /*
 258          * btcoex_period is in msec while (btocex/btscan_)no_stomp are in usec,
 259          * ensure that we properly convert btcoex_period to usec
 260          * for any comparision with (btcoex/btscan_)no_stomp.
 261          */
 262         if (btcoex->btcoex_period * 1000 != btcoex->btcoex_no_stomp) {
 263                 if (btcoex->hw_timer_enabled)
 264                         ath9k_gen_timer_stop(ah, btcoex->no_stomp_timer);
 265
 266                 ath9k_gen_timer_start(ah, btcoex->no_stomp_timer, timer_period,
 267                                       timer_period * 10);
 268                 btcoex->hw_timer_enabled = true;
 269         }
 270
 271         ath9k_ps_restore(sc);
 272
 273 skip_hw_wakeup:
 274         mod_timer(&btcoex->period_timer,
 275                   jiffies + msecs_to_jiffies(btcoex->btcoex_period));
 276 }
 277
 278 /*
 279  * Generic tsf based hw timer which configures weight
 280  * registers to time slice between wlan and bt traffic
 281  */
 282 static void ath_btcoex_no_stomp_timer(void *arg)
 283 {
 284         struct ath_softc *sc = (struct ath_softc *)arg;
 285         struct ath_hw *ah = sc->sc_ah;
 286         struct ath_btcoex *btcoex = &sc->btcoex;
 287         struct ath_common *common = ath9k_hw_common(ah);
 288
 289         ath_dbg(common, BTCOEX, "no stomp timer running\n");
 290
 291         ath9k_ps_wakeup(sc);
 292         spin_lock_bh(&btcoex->btcoex_lock);
 293
 294         if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_LOW ||
 295             (!(ah->caps.hw_caps & ATH9K_HW_CAP_MCI) &&
 296              test_bit(BT_OP_SCAN, &btcoex->op_flags)))
 297                 ath9k_hw_btcoex_bt_stomp(ah, ATH_BTCOEX_STOMP_NONE);
 298          else if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_ALL)
 299                 ath9k_hw_btcoex_bt_stomp(ah, ATH_BTCOEX_STOMP_LOW);
 300
 301         ath9k_hw_btcoex_enable(ah);
 302         spin_unlock_bh(&btcoex->btcoex_lock);
 303         ath9k_ps_restore(sc);
 304 }
 305
 306 static int ath_init_btcoex_timer(struct ath_softc *sc)
 307 {
 308         struct ath_btcoex *btcoex = &sc->btcoex;
 309
 310         btcoex->btcoex_period = ATH_BTCOEX_DEF_BT_PERIOD;
 311         btcoex->btcoex_no_stomp = (100 - ATH_BTCOEX_DEF_DUTY_CYCLE) * 1000 *
 312                 btcoex->btcoex_period / 100;
 313         btcoex->btscan_no_stomp = (100 - ATH_BTCOEX_BTSCAN_DUTY_CYCLE) * 1000 *
 314                                    btcoex->btcoex_period / 100;
 315
 316         setup_timer(&btcoex->period_timer, ath_btcoex_period_timer,
 317                         (unsigned long) sc);
 318
 319         spin_lock_init(&btcoex->btcoex_lock);
 320
 321         btcoex->no_stomp_timer = ath_gen_timer_alloc(sc->sc_ah,
 322                         ath_btcoex_no_stomp_timer,
 323                         ath_btcoex_no_stomp_timer,
 324                         (void *) sc, AR_FIRST_NDP_TIMER);
 325
 326         if (!btcoex->no_stomp_timer)
 327                 return -ENOMEM;
 328
 329         return 0;
 330 }
 331
 332 /*
 333  * (Re)start btcoex timers
 334  */
 335 void ath9k_btcoex_timer_resume(struct ath_softc *sc)
 336 {
 337         struct ath_btcoex *btcoex = &sc->btcoex;
 338         struct ath_hw *ah = sc->sc_ah;
 339
 340         ath_dbg(ath9k_hw_common(ah), BTCOEX, "Starting btcoex timers\n");
 341
 342         /* make sure duty cycle timer is also stopped when resuming */
 343         if (btcoex->hw_timer_enabled) {
 344                 ath9k_gen_timer_stop(sc->sc_ah, btcoex->no_stomp_timer);
 345                 btcoex->hw_timer_enabled = false;
 346         }
 347
 348         btcoex->bt_priority_cnt = 0;
 349         btcoex->bt_priority_time = jiffies;
 350         clear_bit(BT_OP_PRIORITY_DETECTED, &btcoex->op_flags);
 351         clear_bit(BT_OP_SCAN, &btcoex->op_flags);
 352
 353         mod_timer(&btcoex->period_timer, jiffies);
 354 }
 355
 356
 357 /*
 358  * Pause btcoex timer and bt duty cycle timer
 359  */
 360 void ath9k_btcoex_timer_pause(struct ath_softc *sc)
 361 {
 362         struct ath_btcoex *btcoex = &sc->btcoex;
 363         struct ath_hw *ah = sc->sc_ah;
 364
 365         del_timer_sync(&btcoex->period_timer);
 366
 367         if (btcoex->hw_timer_enabled) {
 368                 ath9k_gen_timer_stop(ah, btcoex->no_stomp_timer);
 369                 btcoex->hw_timer_enabled = false;
 370         }
 371 }
 372
 373 void ath9k_btcoex_stop_gen_timer(struct ath_softc *sc)
 374 {
 375         struct ath_btcoex *btcoex = &sc->btcoex;
 376
 377         if (btcoex->hw_timer_enabled) {
 378                 ath9k_gen_timer_stop(sc->sc_ah, btcoex->no_stomp_timer);
 379                 btcoex->hw_timer_enabled = false;
 380         }
 381 }
 382
 383 u16 ath9k_btcoex_aggr_limit(struct ath_softc *sc, u32 max_4ms_framelen)
 384 {
 385         struct ath_btcoex *btcoex = &sc->btcoex;
 386         struct ath_mci_profile *mci = &sc->btcoex.mci;
 387         u16 aggr_limit = 0;
 388
 389         if ((sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_MCI) && mci->aggr_limit)
 390                 aggr_limit = (max_4ms_framelen * mci->aggr_limit) >> 4;
 391         else if (test_bit(BT_OP_PRIORITY_DETECTED, &btcoex->op_flags))
 392                 aggr_limit = min((max_4ms_framelen * 3) / 8,
 393                                  (u32)ATH_AMPDU_LIMIT_MAX);
 394
 395         return aggr_limit;
 396 }
 397
 398 void ath9k_btcoex_handle_interrupt(struct ath_softc *sc, u32 status)
 399 {
 400         struct ath_hw *ah = sc->sc_ah;
 401
 402         if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_3WIRE)
 403                 if (status & ATH9K_INT_GENTIMER)
 404                         ath_gen_timer_isr(sc->sc_ah);
 405
 406         if (status & ATH9K_INT_MCI)
 407                 ath_mci_intr(sc);
 408 }
 409
 410 void ath9k_start_btcoex(struct ath_softc *sc)
 411 {
 412         struct ath_hw *ah = sc->sc_ah;
 413
 414         if ((ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_NONE) &&
 415             !ah->btcoex_hw.enabled) {
 416                 if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_MCI))
 417                         ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
 418                                                    AR_STOMP_LOW_WLAN_WGHT, 0);
 419                 else
 420                         ath9k_hw_btcoex_set_weight(ah, 0, 0,
 421                                                    ATH_BTCOEX_STOMP_NONE);
 422                 ath9k_hw_btcoex_enable(ah);
 423
 424                 if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_3WIRE)
 425                         ath9k_btcoex_timer_resume(sc);
 426         }
 427 }
 428
 429 void ath9k_stop_btcoex(struct ath_softc *sc)
 430 {
 431         struct ath_hw *ah = sc->sc_ah;
 432
 433         if (ah->btcoex_hw.enabled &&
 434             ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_NONE) {
 435                 if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_3WIRE)
 436                         ath9k_btcoex_timer_pause(sc);
 437                 ath9k_hw_btcoex_disable(ah);
 438                 if (AR_SREV_9462(ah) || AR_SREV_9565(ah))
 439                         ath_mci_flush_profile(&sc->btcoex.mci);
 440         }
 441 }
 442
 443 void ath9k_deinit_btcoex(struct ath_softc *sc)
 444 {
 445         struct ath_hw *ah = sc->sc_ah;
 446
 447         if ((sc->btcoex.no_stomp_timer) &&
 448             ath9k_hw_get_btcoex_scheme(sc->sc_ah) == ATH_BTCOEX_CFG_3WIRE)
 449                 ath_gen_timer_free(sc->sc_ah, sc->btcoex.no_stomp_timer);
 450
 451         if (ath9k_hw_mci_is_enabled(ah))
 452                 ath_mci_cleanup(sc);
 453 }
 454
 455 int ath9k_init_btcoex(struct ath_softc *sc)
 456 {
 457         struct ath_txq *txq;
 458         struct ath_hw *ah = sc->sc_ah;
 459         int r;
 460
 461         ath9k_hw_btcoex_init_scheme(ah);
 462
 463         switch (ath9k_hw_get_btcoex_scheme(sc->sc_ah)) {
 464         case ATH_BTCOEX_CFG_NONE:
 465                 break;
 466         case ATH_BTCOEX_CFG_2WIRE:
 467                 ath9k_hw_btcoex_init_2wire(sc->sc_ah);
 468                 break;
 469         case ATH_BTCOEX_CFG_3WIRE:
 470                 ath9k_hw_btcoex_init_3wire(sc->sc_ah);
 471                 r = ath_init_btcoex_timer(sc);
 472                 if (r)
 473                         return -1;
 474                 txq = sc->tx.txq_map[WME_AC_BE];
 475                 ath9k_hw_init_btcoex_hw(sc->sc_ah, txq->axq_qnum);
 476                 sc->btcoex.bt_stomp_type = ATH_BTCOEX_STOMP_LOW;
 477                 if (ath9k_hw_mci_is_enabled(ah)) {
 478                         sc->btcoex.duty_cycle = ATH_BTCOEX_DEF_DUTY_CYCLE;
 479                         INIT_LIST_HEAD(&sc->btcoex.mci.info);
 480
 481                         r = ath_mci_setup(sc);
 482                         if (r)
 483                                 return r;
 484
 485                         ath9k_hw_btcoex_init_mci(ah);
 486                 }
 487
 488                 break;
 489         default:
 490                 WARN_ON(1);
 491                 break;
 492         }
 493
 494         return 0;
 495 }
 496
 497 static int ath9k_dump_mci_btcoex(struct ath_softc *sc, u8 *buf, u32 size)
 498 {
 499         struct ath_btcoex *btcoex = &sc->btcoex;
 500         struct ath_mci_profile *mci = &btcoex->mci;
 501         struct ath_hw *ah = sc->sc_ah;
 502         struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
 503         u32 len = 0;
 504         int i;
 505
 506         ATH_DUMP_BTCOEX("Total BT profiles", NUM_PROF(mci));
 507         ATH_DUMP_BTCOEX("MGMT", mci->num_mgmt);
 508         ATH_DUMP_BTCOEX("SCO", mci->num_sco);
 509         ATH_DUMP_BTCOEX("A2DP", mci->num_a2dp);
 510         ATH_DUMP_BTCOEX("HID", mci->num_hid);
 511         ATH_DUMP_BTCOEX("PAN", mci->num_pan);
 512         ATH_DUMP_BTCOEX("ACL", mci->num_other_acl);
 513         ATH_DUMP_BTCOEX("BDR", mci->num_bdr);
 514         ATH_DUMP_BTCOEX("Aggr. Limit", mci->aggr_limit);
 515         ATH_DUMP_BTCOEX("Stomp Type", btcoex->bt_stomp_type);
 516         ATH_DUMP_BTCOEX("BTCoex Period (msec)", btcoex->btcoex_period);
 517         ATH_DUMP_BTCOEX("Duty Cycle", btcoex->duty_cycle);
 518         ATH_DUMP_BTCOEX("BT Wait time", btcoex->bt_wait_time);
 519         ATH_DUMP_BTCOEX("Concurrent Tx", btcoex_hw->mci.concur_tx);
 520         ATH_DUMP_BTCOEX("Concurrent RSSI cnt", btcoex->rssi_count);
 521
 522         len += snprintf(buf + len, size - len, "BT Weights: ");
 523         for (i = 0; i < AR9300_NUM_BT_WEIGHTS; i++)
 524                 len += snprintf(buf + len, size - len, "%08x ",
 525                                 btcoex_hw->bt_weight[i]);
 526         len += snprintf(buf + len, size - len, "\n");
 527         len += snprintf(buf + len, size - len, "WLAN Weights: ");
 528         for (i = 0; i < AR9300_NUM_BT_WEIGHTS; i++)
 529                 len += snprintf(buf + len, size - len, "%08x ",
 530                                 btcoex_hw->wlan_weight[i]);
 531         len += snprintf(buf + len, size - len, "\n");
 532         len += snprintf(buf + len, size - len, "Tx Priorities: ");
 533         for (i = 0; i < ATH_BTCOEX_STOMP_MAX; i++)
 534                 len += snprintf(buf + len, size - len, "%08x ",
 535                                 btcoex_hw->tx_prio[i]);
 536
 537         len += snprintf(buf + len, size - len, "\n");
 538
 539         return len;
 540 }
 541
 542 static int ath9k_dump_legacy_btcoex(struct ath_softc *sc, u8 *buf, u32 size)
 543 {
 544
 545         struct ath_btcoex *btcoex = &sc->btcoex;
 546         u32 len = 0;
 547
 548         ATH_DUMP_BTCOEX("Stomp Type", btcoex->bt_stomp_type);
 549         ATH_DUMP_BTCOEX("BTCoex Period (msec)", btcoex->btcoex_period);
 550         ATH_DUMP_BTCOEX("Duty Cycle", btcoex->duty_cycle);
 551         ATH_DUMP_BTCOEX("BT Wait time", btcoex->bt_wait_time);
 552
 553         return len;
 554 }
 555
 556 int ath9k_dump_btcoex(struct ath_softc *sc, u8 *buf, u32 size)
 557 {
 558         if (ath9k_hw_mci_is_enabled(sc->sc_ah))
 559                 return ath9k_dump_mci_btcoex(sc, buf, size);
 560         else
 561                 return ath9k_dump_legacy_btcoex(sc, buf, size);
 562 }
 563
 564 #endif /* CONFIG_ATH9K_BTCOEX_SUPPORT */