package/mac80211/patches/571-ath9k_btcoex_optional.patch

   1 --- a/drivers/net/wireless/ath/ath9k/Kconfig
   2 +++ b/drivers/net/wireless/ath/ath9k/Kconfig
   3 @@ -59,6 +59,14 @@ config ATH9K_RATE_CONTROL
   4           Say Y, if you want to use the ath9k specific rate control
   5           module instead of minstrel_ht.
   6
   7 +config ATH9K_BTCOEX_SUPPORT
   8 +       bool "Atheros ath9k bluetooth coexistence support"
   9 +       depends on ATH9K
  10 +       default y
  11 +       ---help---
  12 +         Say Y, if you want to use the ath9k radios together with
  13 +         Bluetooth modules in the same system.
  14 +
  15  config ATH9K_HTC
  16         tristate "Atheros HTC based wireless cards support"
  17         depends on USB && MAC80211
  18 --- a/drivers/net/wireless/ath/ath9k/hw.h
  19 +++ b/drivers/net/wireless/ath/ath9k/hw.h
  20 @@ -210,7 +210,11 @@ enum ath9k_hw_caps {
  21         ATH9K_HW_CAP_5GHZ                       = BIT(14),
  22         ATH9K_HW_CAP_APM                        = BIT(15),
  23         ATH9K_HW_CAP_RTT                        = BIT(16),
  24 +#ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
  25         ATH9K_HW_CAP_MCI                        = BIT(17),
  26 +#else
  27 +       ATH9K_HW_CAP_MCI                        = 0,
  28 +#endif
  29  };
  30
  31  struct ath9k_hw_capabilities {
  32 @@ -1229,6 +1233,16 @@ void ar9003_mci_sync_bt_state(struct ath
  33  void ar9003_mci_get_interrupt(struct ath_hw *ah, u32 *raw_intr,
  34                               u32 *rx_msg_intr);
  35
  36 +#ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
  37 +static inline enum ath_btcoex_scheme
  38 +ath9k_hw_get_btcoex_scheme(struct ath_hw *ah)
  39 +{
  40 +       return ah->btcoex_hw.scheme;
  41 +}
  42 +#else
  43 +#define ath9k_hw_get_btcoex_scheme(...) ATH_BTCOEX_CFG_NONE
  44 +#endif
  45 +
  46  #define ATH9K_CLOCK_RATE_CCK           22
  47  #define ATH9K_CLOCK_RATE_5GHZ_OFDM     40
  48  #define ATH9K_CLOCK_RATE_2GHZ_OFDM     44
  49 --- a/drivers/net/wireless/ath/ath9k/init.c
  50 +++ b/drivers/net/wireless/ath/ath9k/init.c
  51 @@ -411,7 +411,7 @@ static int ath9k_init_btcoex(struct ath_
  52         struct ath_hw *ah = sc->sc_ah;
  53         int r;
  54
  55 -       switch (sc->sc_ah->btcoex_hw.scheme) {
  56 +       switch (ath9k_hw_get_btcoex_scheme(sc->sc_ah)) {
  57         case ATH_BTCOEX_CFG_NONE:
  58                 break;
  59         case ATH_BTCOEX_CFG_2WIRE:
  60 @@ -866,10 +866,10 @@ static void ath9k_deinit_softc(struct at
  61                 kfree(sc->sbands[IEEE80211_BAND_5GHZ].channels);
  62
  63          if ((sc->btcoex.no_stomp_timer) &&
  64 -           sc->sc_ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
  65 +           ath9k_hw_get_btcoex_scheme(sc->sc_ah) == ATH_BTCOEX_CFG_3WIRE)
  66                 ath_gen_timer_free(sc->sc_ah, sc->btcoex.no_stomp_timer);
  67
  68 -       if (sc->sc_ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_MCI)
  69 +       if (ath9k_hw_get_btcoex_scheme(sc->sc_ah) == ATH_BTCOEX_CFG_MCI)
  70                 ath_mci_cleanup(sc);
  71
  72         for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++)
  73 --- a/drivers/net/wireless/ath/ath9k/pci.c
  74 +++ b/drivers/net/wireless/ath/ath9k/pci.c
  75 @@ -121,7 +121,7 @@ static void ath_pci_aspm_init(struct ath
  76         if (!parent)
  77                 return;
  78
  79 -       if (ah->btcoex_hw.scheme != ATH_BTCOEX_CFG_NONE) {
  80 +       if (ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_NONE) {
  81                 /* Bluetooth coexistance requires disabling ASPM. */
  82                 pci_read_config_byte(pdev, pos + PCI_EXP_LNKCTL, &aspm);
  83                 aspm &= ~(PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1);
  84 --- a/drivers/net/wireless/ath/ath9k/htc_drv_init.c
  85 +++ b/drivers/net/wireless/ath/ath9k/htc_drv_init.c
  86 @@ -610,7 +610,7 @@ static void ath9k_init_btcoex(struct ath
  87  {
  88         int qnum;
  89
  90 -       switch (priv->ah->btcoex_hw.scheme) {
  91 +       switch (ath9k_hw_get_btcoex_scheme(priv->ah)) {
  92         case ATH_BTCOEX_CFG_NONE:
  93                 break;
  94         case ATH_BTCOEX_CFG_3WIRE:
  95 @@ -704,7 +704,8 @@ static int ath9k_init_priv(struct ath9k_
  96
  97         if (product && strncmp(product, ATH_HTC_BTCOEX_PRODUCT_ID, 5) == 0) {
  98                 ah->btcoex_hw.scheme = ATH_BTCOEX_CFG_3WIRE;
  99 -               ath9k_init_btcoex(priv);
 100 +               if (ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_NONE)
 101 +                       ath9k_init_btcoex(priv);
 102         }
 103
 104         return 0;
 105 --- a/drivers/net/wireless/ath/ath9k/htc_drv_main.c
 106 +++ b/drivers/net/wireless/ath/ath9k/htc_drv_main.c
 107 @@ -958,7 +958,7 @@ static int ath9k_htc_start(struct ieee80
 108         mod_timer(&priv->tx.cleanup_timer,
 109                   jiffies + msecs_to_jiffies(ATH9K_HTC_TX_CLEANUP_INTERVAL));
 110
 111 -       if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE) {
 112 +       if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_3WIRE) {
 113                 ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
 114                                            AR_STOMP_LOW_WLAN_WGHT);
 115                 ath9k_hw_btcoex_enable(ah);
 116 @@ -1010,7 +1010,8 @@ static void ath9k_htc_stop(struct ieee80
 117
 118         mutex_lock(&priv->mutex);
 119
 120 -       if (ah->btcoex_hw.enabled) {
 121 +       if (ah->btcoex_hw.enabled &&
 122 +           ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_NONE) {
 123                 ath9k_hw_btcoex_disable(ah);
 124                 if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
 125                         ath_htc_cancel_btcoex_work(priv);
 126 --- a/drivers/net/wireless/ath/ath9k/main.c
 127 +++ b/drivers/net/wireless/ath/ath9k/main.c
 128 @@ -742,11 +742,11 @@ void ath9k_tasklet(unsigned long data)
 129                         ath_tx_tasklet(sc);
 130         }
 131
 132 -       if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
 133 +       if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_3WIRE)
 134                 if (status & ATH9K_INT_GENTIMER)
 135                         ath_gen_timer_isr(sc->sc_ah);
 136
 137 -       if (status & ATH9K_INT_MCI)
 138 +       if ((status & ATH9K_INT_MCI) && ATH9K_HW_CAP_MCI)
 139                 ath_mci_intr(sc);
 140
 141  out:
 142 @@ -1083,14 +1083,14 @@ static int ath9k_start(struct ieee80211_
 143
 144         spin_unlock_bh(&sc->sc_pcu_lock);
 145
 146 -       if ((ah->btcoex_hw.scheme != ATH_BTCOEX_CFG_NONE) &&
 147 +       if ((ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_NONE) &&
 148             !ah->btcoex_hw.enabled) {
 149                 if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_MCI))
 150                         ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
 151                                                    AR_STOMP_LOW_WLAN_WGHT);
 152                 ath9k_hw_btcoex_enable(ah);
 153
 154 -               if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
 155 +               if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_3WIRE)
 156                         ath9k_btcoex_timer_resume(sc);
 157         }
 158
 159 @@ -1194,9 +1194,10 @@ static void ath9k_stop(struct ieee80211_
 160         /* Ensure HW is awake when we try to shut it down. */
 161         ath9k_ps_wakeup(sc);
 162
 163 -       if (ah->btcoex_hw.enabled) {
 164 +       if (ah->btcoex_hw.enabled &&
 165 +           ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_NONE) {
 166                 ath9k_hw_btcoex_disable(ah);
 167 -               if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
 168 +               if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_3WIRE)
 169                         ath9k_btcoex_timer_pause(sc);
 170                 ath_mci_flush_profile(&sc->btcoex.mci);
 171         }
 172 --- a/drivers/net/wireless/ath/ath9k/gpio.c
 173 +++ b/drivers/net/wireless/ath/ath9k/gpio.c
 174 @@ -253,6 +253,9 @@ int ath_init_btcoex_timer(struct ath_sof
 175  {
 176         struct ath_btcoex *btcoex = &sc->btcoex;
 177
 178 +       if (ath9k_hw_get_btcoex_scheme(sc->sc_ah) == ATH_BTCOEX_CFG_NONE)
 179 +               return 0;
 180 +
 181         btcoex->btcoex_period = ATH_BTCOEX_DEF_BT_PERIOD * 1000;
 182         btcoex->btcoex_no_stomp = (100 - ATH_BTCOEX_DEF_DUTY_CYCLE) *
 183                 btcoex->btcoex_period / 100;
 184 @@ -286,6 +289,9 @@ void ath9k_btcoex_timer_resume(struct at
 185         ath_dbg(ath9k_hw_common(ah), ATH_DBG_BTCOEX,
 186                 "Starting btcoex timers\n");
 187
 188 +       if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_NONE)
 189 +               return;
 190 +
 191         /* make sure duty cycle timer is also stopped when resuming */
 192         if (btcoex->hw_timer_enabled)
 193                 ath9k_gen_timer_stop(sc->sc_ah, btcoex->no_stomp_timer);
 194 @@ -306,6 +312,9 @@ void ath9k_btcoex_timer_pause(struct ath
 195         struct ath_btcoex *btcoex = &sc->btcoex;
 196         struct ath_hw *ah = sc->sc_ah;
 197
 198 +       if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_NONE)
 199 +               return;
 200 +
 201         del_timer_sync(&btcoex->period_timer);
 202
 203         if (btcoex->hw_timer_enabled)
 204 --- a/drivers/net/wireless/ath/ath9k/hw.c
 205 +++ b/drivers/net/wireless/ath/ath9k/hw.c
 206 @@ -1932,7 +1932,8 @@ int ath9k_hw_reset(struct ath_hw *ah, st
 207  #endif
 208         }
 209
 210 -       if (ah->btcoex_hw.enabled)
 211 +       if (ah->btcoex_hw.enabled &&
 212 +           ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_NONE)
 213                 ath9k_hw_btcoex_enable(ah);
 214
 215         if (mci && mci_hw->ready) {
 216 --- a/drivers/net/wireless/ath/ath9k/htc_drv_gpio.c
 217 +++ b/drivers/net/wireless/ath/ath9k/htc_drv_gpio.c
 218 @@ -116,6 +116,9 @@ void ath_htc_init_btcoex_work(struct ath
 219  {
 220         struct ath_btcoex *btcoex = &priv->btcoex;
 221
 222 +       if (ath9k_hw_get_btcoex_scheme(priv->ah) == ATH_BTCOEX_CFG_NONE)
 223 +               return;
 224 +
 225         btcoex->btcoex_period = ATH_BTCOEX_DEF_BT_PERIOD;
 226         btcoex->btcoex_no_stomp = (100 - ATH_BTCOEX_DEF_DUTY_CYCLE) *
 227                 btcoex->btcoex_period / 100;
 228 @@ -134,6 +137,9 @@ void ath_htc_resume_btcoex_work(struct a
 229         struct ath_btcoex *btcoex = &priv->btcoex;
 230         struct ath_hw *ah = priv->ah;
 231
 232 +       if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_NONE)
 233 +               return;
 234 +
 235         ath_dbg(ath9k_hw_common(ah), ATH_DBG_BTCOEX, "Starting btcoex work\n");
 236
 237         btcoex->bt_priority_cnt = 0;
 238 @@ -148,6 +154,9 @@ void ath_htc_resume_btcoex_work(struct a
 239   */
 240  void ath_htc_cancel_btcoex_work(struct ath9k_htc_priv *priv)
 241  {
 242 +       if (ath9k_hw_get_btcoex_scheme(priv->ah) == ATH_BTCOEX_CFG_NONE)
 243 +               return;
 244 +
 245         cancel_delayed_work_sync(&priv->coex_period_work);
 246         cancel_delayed_work_sync(&priv->duty_cycle_work);
 247  }
 248 --- a/drivers/net/wireless/ath/ath9k/btcoex.c
 249 +++ b/drivers/net/wireless/ath/ath9k/btcoex.c
 250 @@ -68,6 +68,9 @@ void ath9k_hw_init_btcoex_hw(struct ath_
 251         u32 i, idx;
 252         bool rxclear_polarity = ath_bt_config.bt_rxclear_polarity;
 253
 254 +       if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_NONE)
 255 +               return;
 256 +
 257         if (AR_SREV_9300_20_OR_LATER(ah))
 258                 rxclear_polarity = !ath_bt_config.bt_rxclear_polarity;
 259
 260 @@ -99,6 +102,9 @@ void ath9k_hw_btcoex_init_2wire(struct a
 261  {
 262         struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
 263
 264 +       if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_NONE)
 265 +               return;
 266 +
 267         /* connect bt_active to baseband */
 268         REG_CLR_BIT(ah, AR_GPIO_INPUT_EN_VAL,
 269                     (AR_GPIO_INPUT_EN_VAL_BT_PRIORITY_DEF |
 270 @@ -121,6 +127,9 @@ void ath9k_hw_btcoex_init_3wire(struct a
 271  {
 272         struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
 273
 274 +       if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_NONE)
 275 +               return;
 276 +
 277         /* btcoex 3-wire */
 278         REG_SET_BIT(ah, AR_GPIO_INPUT_EN_VAL,
 279                         (AR_GPIO_INPUT_EN_VAL_BT_PRIORITY_BB |
 280 @@ -147,6 +156,9 @@ static void ath9k_hw_btcoex_enable_2wire
 281  {
 282         struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
 283
 284 +       if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_NONE)
 285 +               return;
 286 +
 287         /* Configure the desired GPIO port for TX_FRAME output */
 288         ath9k_hw_cfg_output(ah, btcoex_hw->wlanactive_gpio,
 289                             AR_GPIO_OUTPUT_MUX_AS_TX_FRAME);
 290 @@ -158,6 +170,9 @@ void ath9k_hw_btcoex_set_weight(struct a
 291  {
 292         struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
 293
 294 +       if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_NONE)
 295 +               return;
 296 +
 297         btcoex_hw->bt_coex_weights = SM(bt_weight, AR_BTCOEX_BT_WGHT) |
 298                                      SM(wlan_weight, AR_BTCOEX_WL_WGHT);
 299  }
 300 @@ -219,9 +234,9 @@ void ath9k_hw_btcoex_enable(struct ath_h
 301  {
 302         struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
 303
 304 -       switch (btcoex_hw->scheme) {
 305 +       switch (ath9k_hw_get_btcoex_scheme(ah)) {
 306         case ATH_BTCOEX_CFG_NONE:
 307 -               break;
 308 +               return;
 309         case ATH_BTCOEX_CFG_2WIRE:
 310                 ath9k_hw_btcoex_enable_2wire(ah);
 311                 break;
 312 @@ -246,6 +261,9 @@ void ath9k_hw_btcoex_disable(struct ath_
 313         struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
 314         int i;
 315
 316 +       if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_NONE)
 317 +               return;
 318 +
 319         btcoex_hw->enabled = false;
 320         if (btcoex_hw->scheme == ATH_BTCOEX_CFG_MCI) {
 321                 ath9k_hw_btcoex_bt_stomp(ah, ATH_BTCOEX_STOMP_NONE);
 322 @@ -294,6 +312,9 @@ static void ar9003_btcoex_bt_stomp(struc
 323  void ath9k_hw_btcoex_bt_stomp(struct ath_hw *ah,
 324                               enum ath_stomp_type stomp_type)
 325  {
 326 +       if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_NONE)
 327 +               return;
 328 +
 329         if (AR_SREV_9300_20_OR_LATER(ah)) {
 330                 ar9003_btcoex_bt_stomp(ah, stomp_type);
 331                 return;
 332 --- a/drivers/net/wireless/ath/ath9k/ar9003_mci.c
 333 +++ b/drivers/net/wireless/ath/ath9k/ar9003_mci.c
 334 @@ -85,6 +85,9 @@ void ar9003_mci_remote_reset(struct ath_
 335  {
 336         u32 payload[4] = { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffff00};
 337
 338 +       if (!ATH9K_HW_CAP_MCI)
 339 +               return;
 340 +
 341         ar9003_mci_send_message(ah, MCI_REMOTE_RESET, 0, payload, 16,
 342                                 wait_done, false);
 343         udelay(5);
 344 @@ -94,6 +97,9 @@ void ar9003_mci_send_lna_transfer(struct
 345  {
 346         u32 payload = 0x00000000;
 347
 348 +       if (!ATH9K_HW_CAP_MCI)
 349 +               return;
 350 +
 351         ar9003_mci_send_message(ah, MCI_LNA_TRANS, 0, &payload, 1,
 352                                 wait_done, false);
 353  }
 354 @@ -107,6 +113,9 @@ static void ar9003_mci_send_req_wake(str
 355
 356  void ar9003_mci_send_sys_waking(struct ath_hw *ah, bool wait_done)
 357  {
 358 +       if (!ATH9K_HW_CAP_MCI)
 359 +               return;
 360 +
 361         ar9003_mci_send_message(ah, MCI_SYS_WAKING, MCI_FLAG_DISABLE_TIMESTAMP,
 362                                 NULL, 0, wait_done, false);
 363  }
 364 @@ -221,6 +230,9 @@ void ar9003_mci_send_coex_halt_bt_gpm(st
 365         struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
 366         u32 payload[4] = {0, 0, 0, 0};
 367
 368 +       if (!ATH9K_HW_CAP_MCI)
 369 +               return;
 370 +
 371         ath_dbg(common, ATH_DBG_MCI, "MCI Send Coex %s BT GPM.\n",
 372                 (halt) ? "halt" : "unhalt");
 373
 374 @@ -381,12 +393,17 @@ static void ar9003_mci_prep_interface(st
 375
 376  void ar9003_mci_disable_interrupt(struct ath_hw *ah)
 377  {
 378 +       if (!ATH9K_HW_CAP_MCI)
 379 +               return;
 380 +
 381         REG_WRITE(ah, AR_MCI_INTERRUPT_EN, 0);
 382         REG_WRITE(ah, AR_MCI_INTERRUPT_RX_MSG_EN, 0);
 383  }
 384
 385  void ar9003_mci_enable_interrupt(struct ath_hw *ah)
 386  {
 387 +       if (!ATH9K_HW_CAP_MCI)
 388 +               return;
 389
 390         REG_WRITE(ah, AR_MCI_INTERRUPT_EN, AR_MCI_INTERRUPT_DEFAULT);
 391         REG_WRITE(ah, AR_MCI_INTERRUPT_RX_MSG_EN,
 392 @@ -397,6 +414,9 @@ bool ar9003_mci_check_int(struct ath_hw
 393  {
 394         u32 intr;
 395
 396 +       if (!ATH9K_HW_CAP_MCI)
 397 +               return false;
 398 +
 399         intr = REG_READ(ah, AR_MCI_INTERRUPT_RX_MSG_RAW);
 400         return ((intr & ints) == ints);
 401  }
 402 @@ -405,6 +425,10 @@ void ar9003_mci_get_interrupt(struct ath
 403                               u32 *rx_msg_intr)
 404  {
 405         struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
 406 +
 407 +       if (!ATH9K_HW_CAP_MCI)
 408 +               return;
 409 +
 410         *raw_intr = mci->raw_intr;
 411         *rx_msg_intr = mci->rx_msg_intr;
 412
 413 @@ -418,6 +442,9 @@ void ar9003_mci_2g5g_changed(struct ath_
 414  {
 415         struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
 416
 417 +       if (!ATH9K_HW_CAP_MCI)
 418 +               return;
 419 +
 420         if (!mci->update_2g5g &&
 421             (mci->is_2g != is_2g))
 422                 mci->update_2g5g = true;
 423 @@ -531,6 +558,9 @@ void ar9003_mci_reset(struct ath_hw *ah,
 424         struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
 425         u32 regval, thresh;
 426
 427 +       if (!ATH9K_HW_CAP_MCI)
 428 +               return;
 429 +
 430         ath_dbg(common, ATH_DBG_MCI, "MCI full_sleep = %d, is_2g = %d\n",
 431                 is_full_sleep, is_2g);
 432
 433 @@ -661,6 +691,9 @@ void ar9003_mci_mute_bt(struct ath_hw *a
 434  {
 435         struct ath_common *common = ath9k_hw_common(ah);
 436
 437 +       if (!ATH9K_HW_CAP_MCI)
 438 +               return;
 439 +
 440         /* disable all MCI messages */
 441         REG_WRITE(ah, AR_MCI_MSG_ATTRIBUTES_TABLE, 0xffff0000);
 442         REG_WRITE(ah, AR_BTCOEX_WL_WEIGHTS0, 0xffffffff);
 443 @@ -693,6 +726,9 @@ void ar9003_mci_sync_bt_state(struct ath
 444         struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
 445         u32 cur_bt_state;
 446
 447 +       if (!ATH9K_HW_CAP_MCI)
 448 +               return;
 449 +
 450         cur_bt_state = ar9003_mci_state(ah, MCI_STATE_REMOTE_SLEEP, NULL);
 451
 452         if (mci->bt_state != cur_bt_state) {
 453 @@ -857,6 +893,9 @@ void ar9003_mci_2g5g_switch(struct ath_h
 454         struct ath_common *common = ath9k_hw_common(ah);
 455         struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
 456
 457 +       if (!ATH9K_HW_CAP_MCI)
 458 +               return;
 459 +
 460         if (mci->update_2g5g) {
 461                 if (mci->is_2g) {
 462
 463 @@ -908,6 +947,9 @@ bool ar9003_mci_send_message(struct ath_
 464         u32 saved_mci_int_en;
 465         int i;
 466
 467 +       if (!ATH9K_HW_CAP_MCI)
 468 +               return false;
 469 +
 470         saved_mci_int_en = REG_READ(ah, AR_MCI_INTERRUPT_EN);
 471         regval = REG_READ(ah, AR_BTCOEX_CTRL);
 472
 473 @@ -973,6 +1015,9 @@ void ar9003_mci_setup(struct ath_hw *ah,
 474         struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
 475         void *sched_buf = (void *)((char *) gpm_buf + (sched_addr - gpm_addr));
 476
 477 +       if (!ATH9K_HW_CAP_MCI)
 478 +               return;
 479 +
 480         mci->gpm_addr = gpm_addr;
 481         mci->gpm_buf = gpm_buf;
 482         mci->gpm_len = len;
 483 @@ -987,6 +1032,9 @@ void ar9003_mci_cleanup(struct ath_hw *a
 484  {
 485         struct ath_common *common = ath9k_hw_common(ah);
 486
 487 +       if (!ATH9K_HW_CAP_MCI)
 488 +               return;
 489 +
 490         /* Turn off MCI and Jupiter mode. */
 491         REG_WRITE(ah, AR_BTCOEX_CTRL, 0x00);
 492         ath_dbg(common, ATH_DBG_MCI, "MCI ar9003_mci_cleanup\n");
 493 @@ -1056,6 +1104,9 @@ u32 ar9003_mci_wait_for_gpm(struct ath_h
 494         u8 recv_type = 0, recv_opcode = 0;
 495         bool b_is_bt_cal_done = (gpm_type == MCI_GPM_BT_CAL_DONE);
 496
 497 +       if (!ATH9K_HW_CAP_MCI)
 498 +               return 0;
 499 +
 500         more_data = time_out ? MCI_GPM_NOMORE : MCI_GPM_MORE;
 501
 502         while (time_out > 0) {
 503 @@ -1188,6 +1239,9 @@ u32 ar9003_mci_state(struct ath_hw *ah,
 504         u32 value = 0, more_gpm = 0, gpm_ptr;
 505         u8 query_type;
 506
 507 +       if (!ATH9K_HW_CAP_MCI)
 508 +               return 0;
 509 +
 510         switch (state_type) {
 511         case MCI_STATE_ENABLE:
 512                 if (mci->ready) {
 513 --- a/drivers/net/wireless/ath/ath9k/mci.c
 514 +++ b/drivers/net/wireless/ath/ath9k/mci.c
 515 @@ -425,6 +425,9 @@ int ath_mci_setup(struct ath_softc *sc)
 516         struct ath_mci_coex *mci = &sc->mci_coex;
 517         int error = 0;
 518
 519 +       if (!ATH9K_HW_CAP_MCI)
 520 +               return 0;
 521 +
 522         mci->sched_buf.bf_len = ATH_MCI_SCHED_BUF_SIZE + ATH_MCI_GPM_BUF_SIZE;
 523
 524         if (ath_mci_buf_alloc(sc, &mci->sched_buf)) {
 525 @@ -458,6 +461,9 @@ void ath_mci_cleanup(struct ath_softc *s
 526         struct ath_hw *ah = sc->sc_ah;
 527         struct ath_mci_coex *mci = &sc->mci_coex;
 528
 529 +       if (!ATH9K_HW_CAP_MCI)
 530 +               return;
 531 +
 532         /*
 533          * both schedule and gpm buffers will be released
 534          */
 535 @@ -476,6 +482,9 @@ void ath_mci_intr(struct ath_softc *sc)
 536         u32 more_data = MCI_GPM_MORE;
 537         bool skip_gpm = false;
 538
 539 +       if (!ATH9K_HW_CAP_MCI)
 540 +               return;
 541 +
 542         ar9003_mci_get_interrupt(sc->sc_ah, &mci_int, &mci_int_rxmsg);
 543
 544         if (ar9003_mci_state(ah, MCI_STATE_ENABLE, NULL) == 0) {