ath9k: disable bluetooth coexistence support to reduce module size

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@29495 3c298f89-4303-0410-b956-a3cf2f4a3e73

2 files changed, 583 insertions, 0 deletions

diff --git a/package/mac80211/patches/570-ath9k_mci_static.patch b/package/mac80211/patches/570-ath9k_mci_static.patch
new file mode 100644
index 000000000..9a337c0d6
--- /dev/null
+++ b/package/mac80211/patches/570-ath9k_mci_static.patch
@@ -0,0 +1,37 @@
+--- a/drivers/net/wireless/ath/ath9k/mci.c
++++ b/drivers/net/wireless/ath/ath9k/mci.c
+@@ -234,8 +234,8 @@ static void ath_mci_cal_msg(struct ath_s
+ 	}
+ }
+ 
+-void ath_mci_process_profile(struct ath_softc *sc,
+-			     struct ath_mci_profile_info *info)
++static void ath_mci_process_profile(struct ath_softc *sc,
++				    struct ath_mci_profile_info *info)
+ {
+ 	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
+ 	struct ath_btcoex *btcoex = &sc->btcoex;
+@@ -261,8 +261,8 @@ void ath_mci_process_profile(struct ath_
+ 	ath_mci_update_scheme(sc);
+ }
+ 
+-void ath_mci_process_status(struct ath_softc *sc,
+-			    struct ath_mci_profile_status *status)
++static void ath_mci_process_status(struct ath_softc *sc,
++				   struct ath_mci_profile_status *status)
+ {
+ 	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
+ 	struct ath_btcoex *btcoex = &sc->btcoex;
+--- a/drivers/net/wireless/ath/ath9k/mci.h
++++ b/drivers/net/wireless/ath/ath9k/mci.h
+@@ -128,10 +128,6 @@ struct ath_mci_coex {
+ };
+ 
+ void ath_mci_flush_profile(struct ath_mci_profile *mci);
+-void ath_mci_process_profile(struct ath_softc *sc,
+-			     struct ath_mci_profile_info *info);
+-void ath_mci_process_status(struct ath_softc *sc,
+-			    struct ath_mci_profile_status *status);
+ int ath_mci_setup(struct ath_softc *sc);
+ void ath_mci_cleanup(struct ath_softc *sc);
+ void ath_mci_intr(struct ath_softc *sc);
diff --git a/package/mac80211/patches/571-ath9k_btcoex_optional.patch b/package/mac80211/patches/571-ath9k_btcoex_optional.patch
new file mode 100644
index 000000000..53448880a
--- /dev/null
+++ b/package/mac80211/patches/571-ath9k_btcoex_optional.patch
@@ -0,0 +1,546 @@
+--- a/drivers/net/wireless/ath/ath9k/Kconfig
++++ b/drivers/net/wireless/ath/ath9k/Kconfig
+@@ -59,6 +59,14 @@ config ATH9K_RATE_CONTROL
+ 	  Say Y, if you want to use the ath9k specific rate control
+ 	  module instead of minstrel_ht.
+ 
++config ATH9K_BTCOEX_SUPPORT
++	bool "Atheros ath9k bluetooth coexistence support"
++	depends on ATH9K
++	default y
++	---help---
++	  Say Y, if you want to use the ath9k radios together with
++	  Bluetooth modules in the same system.
++
+ config ATH9K_HTC
+        tristate "Atheros HTC based wireless cards support"
+        depends on USB && MAC80211
+--- a/drivers/net/wireless/ath/ath9k/hw.h
++++ b/drivers/net/wireless/ath/ath9k/hw.h
+@@ -210,7 +210,11 @@ enum ath9k_hw_caps {
+ 	ATH9K_HW_CAP_5GHZ			= BIT(14),
+ 	ATH9K_HW_CAP_APM			= BIT(15),
+ 	ATH9K_HW_CAP_RTT			= BIT(16),
++#ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
+ 	ATH9K_HW_CAP_MCI			= BIT(17),
++#else
++	ATH9K_HW_CAP_MCI			= 0,
++#endif
+ };
+ 
+ struct ath9k_hw_capabilities {
+--- a/drivers/net/wireless/ath/ath9k/btcoex.h
++++ b/drivers/net/wireless/ath/ath9k/btcoex.h
+@@ -98,6 +98,16 @@ struct ath_btcoex_hw {
+ 	u32 wlan_weight[AR9300_NUM_WLAN_WEIGHTS];
+ };
+ 
++#ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
++static inline enum ath_btcoex_scheme
++ath9k_hw_get_btcoex_scheme(struct ath_hw *ah)
++{
++	return ah->btcoex_hw.scheme;
++}
++#else
++#define ath9k_hw_get_btcoex_scheme(...) ATH_BTCOEX_CFG_NONE
++#endif
++
+ void ath9k_hw_btcoex_init_2wire(struct ath_hw *ah);
+ void ath9k_hw_btcoex_init_3wire(struct ath_hw *ah);
+ void ath9k_hw_init_btcoex_hw(struct ath_hw *ah, int qnum);
+--- a/drivers/net/wireless/ath/ath9k/init.c
++++ b/drivers/net/wireless/ath/ath9k/init.c
+@@ -411,7 +411,7 @@ static int ath9k_init_btcoex(struct ath_
+ 	struct ath_hw *ah = sc->sc_ah;
+ 	int r;
+ 
+-	switch (sc->sc_ah->btcoex_hw.scheme) {
++	switch (ath9k_hw_get_btcoex_scheme(sc->sc_ah)) {
+ 	case ATH_BTCOEX_CFG_NONE:
+ 		break;
+ 	case ATH_BTCOEX_CFG_2WIRE:
+@@ -866,10 +866,10 @@ static void ath9k_deinit_softc(struct at
+ 		kfree(sc->sbands[IEEE80211_BAND_5GHZ].channels);
+ 
+         if ((sc->btcoex.no_stomp_timer) &&
+-	    sc->sc_ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
++	    ath9k_hw_get_btcoex_scheme(sc->sc_ah) == ATH_BTCOEX_CFG_3WIRE)
+ 		ath_gen_timer_free(sc->sc_ah, sc->btcoex.no_stomp_timer);
+ 
+-	if (sc->sc_ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_MCI)
++	if (ath9k_hw_get_btcoex_scheme(sc->sc_ah) == ATH_BTCOEX_CFG_MCI)
+ 		ath_mci_cleanup(sc);
+ 
+ 	for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++)
+--- a/drivers/net/wireless/ath/ath9k/pci.c
++++ b/drivers/net/wireless/ath/ath9k/pci.c
+@@ -121,7 +121,7 @@ static void ath_pci_aspm_init(struct ath
+ 	if (!parent)
+ 		return;
+ 
+-	if (ah->btcoex_hw.scheme != ATH_BTCOEX_CFG_NONE) {
++	if (ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_NONE) {
+ 		/* Bluetooth coexistance requires disabling ASPM. */
+ 		pci_read_config_byte(pdev, pos + PCI_EXP_LNKCTL, &aspm);
+ 		aspm &= ~(PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1);
+--- a/drivers/net/wireless/ath/ath9k/htc_drv_init.c
++++ b/drivers/net/wireless/ath/ath9k/htc_drv_init.c
+@@ -610,7 +610,7 @@ static void ath9k_init_btcoex(struct ath
+ {
+ 	int qnum;
+ 
+-	switch (priv->ah->btcoex_hw.scheme) {
++	switch (ath9k_hw_get_btcoex_scheme(priv->ah)) {
+ 	case ATH_BTCOEX_CFG_NONE:
+ 		break;
+ 	case ATH_BTCOEX_CFG_3WIRE:
+@@ -704,7 +704,8 @@ static int ath9k_init_priv(struct ath9k_
+ 
+ 	if (product && strncmp(product, ATH_HTC_BTCOEX_PRODUCT_ID, 5) == 0) {
+ 		ah->btcoex_hw.scheme = ATH_BTCOEX_CFG_3WIRE;
+-		ath9k_init_btcoex(priv);
++		if (ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_NONE)
++			ath9k_init_btcoex(priv);
+ 	}
+ 
+ 	return 0;
+--- a/drivers/net/wireless/ath/ath9k/htc_drv_main.c
++++ b/drivers/net/wireless/ath/ath9k/htc_drv_main.c
+@@ -958,7 +958,7 @@ static int ath9k_htc_start(struct ieee80
+ 	mod_timer(&priv->tx.cleanup_timer,
+ 		  jiffies + msecs_to_jiffies(ATH9K_HTC_TX_CLEANUP_INTERVAL));
+ 
+-	if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE) {
++	if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_3WIRE) {
+ 		ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
+ 					   AR_STOMP_LOW_WLAN_WGHT);
+ 		ath9k_hw_btcoex_enable(ah);
+@@ -1010,7 +1010,8 @@ static void ath9k_htc_stop(struct ieee80
+ 
+ 	mutex_lock(&priv->mutex);
+ 
+-	if (ah->btcoex_hw.enabled) {
++	if (ah->btcoex_hw.enabled &&
++	    ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_NONE) {
+ 		ath9k_hw_btcoex_disable(ah);
+ 		if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
+ 			ath_htc_cancel_btcoex_work(priv);
+--- a/drivers/net/wireless/ath/ath9k/main.c
++++ b/drivers/net/wireless/ath/ath9k/main.c
+@@ -742,11 +742,11 @@ void ath9k_tasklet(unsigned long data)
+ 			ath_tx_tasklet(sc);
+ 	}
+ 
+-	if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
++	if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_3WIRE)
+ 		if (status & ATH9K_INT_GENTIMER)
+ 			ath_gen_timer_isr(sc->sc_ah);
+ 
+-	if (status & ATH9K_INT_MCI)
++	if ((status & ATH9K_INT_MCI) && ATH9K_HW_CAP_MCI)
+ 		ath_mci_intr(sc);
+ 
+ out:
+@@ -1083,14 +1083,14 @@ static int ath9k_start(struct ieee80211_
+ 
+ 	spin_unlock_bh(&sc->sc_pcu_lock);
+ 
+-	if ((ah->btcoex_hw.scheme != ATH_BTCOEX_CFG_NONE) &&
++	if ((ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_NONE) &&
+ 	    !ah->btcoex_hw.enabled) {
+ 		if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_MCI))
+ 			ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
+ 						   AR_STOMP_LOW_WLAN_WGHT);
+ 		ath9k_hw_btcoex_enable(ah);
+ 
+-		if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
++		if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_3WIRE)
+ 			ath9k_btcoex_timer_resume(sc);
+ 	}
+ 
+@@ -1194,9 +1194,10 @@ static void ath9k_stop(struct ieee80211_
+ 	/* Ensure HW is awake when we try to shut it down. */
+ 	ath9k_ps_wakeup(sc);
+ 
+-	if (ah->btcoex_hw.enabled) {
++	if (ah->btcoex_hw.enabled &&
++	    ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_NONE) {
+ 		ath9k_hw_btcoex_disable(ah);
+-		if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
++		if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_3WIRE)
+ 			ath9k_btcoex_timer_pause(sc);
+ 		ath_mci_flush_profile(&sc->btcoex.mci);
+ 	}
+--- a/drivers/net/wireless/ath/ath9k/gpio.c
++++ b/drivers/net/wireless/ath/ath9k/gpio.c
+@@ -253,6 +253,9 @@ int ath_init_btcoex_timer(struct ath_sof
+ {
+ 	struct ath_btcoex *btcoex = &sc->btcoex;
+ 
++	if (ath9k_hw_get_btcoex_scheme(sc->sc_ah) == ATH_BTCOEX_CFG_NONE)
++		return 0;
++
+ 	btcoex->btcoex_period = ATH_BTCOEX_DEF_BT_PERIOD * 1000;
+ 	btcoex->btcoex_no_stomp = (100 - ATH_BTCOEX_DEF_DUTY_CYCLE) *
+ 		btcoex->btcoex_period / 100;
+@@ -286,6 +289,9 @@ void ath9k_btcoex_timer_resume(struct at
+ 	ath_dbg(ath9k_hw_common(ah), ATH_DBG_BTCOEX,
+ 		"Starting btcoex timers\n");
+ 
++	if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_NONE)
++		return;
++
+ 	/* make sure duty cycle timer is also stopped when resuming */
+ 	if (btcoex->hw_timer_enabled)
+ 		ath9k_gen_timer_stop(sc->sc_ah, btcoex->no_stomp_timer);
+@@ -306,6 +312,9 @@ void ath9k_btcoex_timer_pause(struct ath
+ 	struct ath_btcoex *btcoex = &sc->btcoex;
+ 	struct ath_hw *ah = sc->sc_ah;
+ 
++	if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_NONE)
++		return;
++
+ 	del_timer_sync(&btcoex->period_timer);
+ 
+ 	if (btcoex->hw_timer_enabled)
+--- a/drivers/net/wireless/ath/ath9k/hw.c
++++ b/drivers/net/wireless/ath/ath9k/hw.c
+@@ -1929,7 +1929,8 @@ int ath9k_hw_reset(struct ath_hw *ah, st
+ #endif
+ 	}
+ 
+-	if (ah->btcoex_hw.enabled)
++	if (ah->btcoex_hw.enabled &&
++	    ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_NONE)
+ 		ath9k_hw_btcoex_enable(ah);
+ 
+ 	if (mci && mci_hw->ready) {
+--- a/drivers/net/wireless/ath/ath9k/htc_drv_gpio.c
++++ b/drivers/net/wireless/ath/ath9k/htc_drv_gpio.c
+@@ -116,6 +116,9 @@ void ath_htc_init_btcoex_work(struct ath
+ {
+ 	struct ath_btcoex *btcoex = &priv->btcoex;
+ 
++	if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_NONE)
++		return;
++
+ 	btcoex->btcoex_period = ATH_BTCOEX_DEF_BT_PERIOD;
+ 	btcoex->btcoex_no_stomp = (100 - ATH_BTCOEX_DEF_DUTY_CYCLE) *
+ 		btcoex->btcoex_period / 100;
+@@ -134,6 +137,9 @@ void ath_htc_resume_btcoex_work(struct a
+ 	struct ath_btcoex *btcoex = &priv->btcoex;
+ 	struct ath_hw *ah = priv->ah;
+ 
++	if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_NONE)
++		return;
++
+ 	ath_dbg(ath9k_hw_common(ah), ATH_DBG_BTCOEX, "Starting btcoex work\n");
+ 
+ 	btcoex->bt_priority_cnt = 0;
+@@ -148,6 +154,9 @@ void ath_htc_resume_btcoex_work(struct a
+  */
+ void ath_htc_cancel_btcoex_work(struct ath9k_htc_priv *priv)
+ {
++	if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_NONE)
++		return;
++
+ 	cancel_delayed_work_sync(&priv->coex_period_work);
+ 	cancel_delayed_work_sync(&priv->duty_cycle_work);
+ }
+--- a/drivers/net/wireless/ath/ath9k/btcoex.c
++++ b/drivers/net/wireless/ath/ath9k/btcoex.c
+@@ -68,6 +68,9 @@ void ath9k_hw_init_btcoex_hw(struct ath_
+ 	u32 i, idx;
+ 	bool rxclear_polarity = ath_bt_config.bt_rxclear_polarity;
+ 
++	if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_NONE)
++		return;
++
+ 	if (AR_SREV_9300_20_OR_LATER(ah))
+ 		rxclear_polarity = !ath_bt_config.bt_rxclear_polarity;
+ 
+@@ -99,6 +102,9 @@ void ath9k_hw_btcoex_init_2wire(struct a
+ {
+ 	struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
+ 
++	if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_NONE)
++		return;
++
+ 	/* connect bt_active to baseband */
+ 	REG_CLR_BIT(ah, AR_GPIO_INPUT_EN_VAL,
+ 		    (AR_GPIO_INPUT_EN_VAL_BT_PRIORITY_DEF |
+@@ -121,6 +127,9 @@ void ath9k_hw_btcoex_init_3wire(struct a
+ {
+ 	struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
+ 
++	if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_NONE)
++		return;
++
+ 	/* btcoex 3-wire */
+ 	REG_SET_BIT(ah, AR_GPIO_INPUT_EN_VAL,
+ 			(AR_GPIO_INPUT_EN_VAL_BT_PRIORITY_BB |
+@@ -147,6 +156,9 @@ static void ath9k_hw_btcoex_enable_2wire
+ {
+ 	struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
+ 
++	if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_NONE)
++		return;
++
+ 	/* Configure the desired GPIO port for TX_FRAME output */
+ 	ath9k_hw_cfg_output(ah, btcoex_hw->wlanactive_gpio,
+ 			    AR_GPIO_OUTPUT_MUX_AS_TX_FRAME);
+@@ -158,6 +170,9 @@ void ath9k_hw_btcoex_set_weight(struct a
+ {
+ 	struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
+ 
++	if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_NONE)
++		return;
++
+ 	btcoex_hw->bt_coex_weights = SM(bt_weight, AR_BTCOEX_BT_WGHT) |
+ 				     SM(wlan_weight, AR_BTCOEX_WL_WGHT);
+ }
+@@ -219,9 +234,9 @@ void ath9k_hw_btcoex_enable(struct ath_h
+ {
+ 	struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
+ 
+-	switch (btcoex_hw->scheme) {
++	switch (ath9k_hw_get_btcoex_scheme(ah)) {
+ 	case ATH_BTCOEX_CFG_NONE:
+-		break;
++		return;
+ 	case ATH_BTCOEX_CFG_2WIRE:
+ 		ath9k_hw_btcoex_enable_2wire(ah);
+ 		break;
+@@ -246,6 +261,9 @@ void ath9k_hw_btcoex_disable(struct ath_
+ 	struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
+ 	int i;
+ 
++	if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_NONE)
++		return;
++
+ 	btcoex_hw->enabled = false;
+ 	if (btcoex_hw->scheme == ATH_BTCOEX_CFG_MCI) {
+ 		ath9k_hw_btcoex_bt_stomp(ah, ATH_BTCOEX_STOMP_NONE);
+@@ -294,6 +312,9 @@ static void ar9003_btcoex_bt_stomp(struc
+ void ath9k_hw_btcoex_bt_stomp(struct ath_hw *ah,
+ 			      enum ath_stomp_type stomp_type)
+ {
++	if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_NONE)
++		return;
++
+ 	if (AR_SREV_9300_20_OR_LATER(ah)) {
+ 		ar9003_btcoex_bt_stomp(ah, stomp_type);
+ 		return;
+--- a/drivers/net/wireless/ath/ath9k/ar9003_mci.c
++++ b/drivers/net/wireless/ath/ath9k/ar9003_mci.c
+@@ -85,6 +85,9 @@ void ar9003_mci_remote_reset(struct ath_
+ {
+ 	u32 payload[4] = { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffff00};
+ 
++	if (!ATH9K_HW_CAP_MCI)
++		return;
++
+ 	ar9003_mci_send_message(ah, MCI_REMOTE_RESET, 0, payload, 16,
+ 				wait_done, false);
+ 	udelay(5);
+@@ -94,6 +97,9 @@ void ar9003_mci_send_lna_transfer(struct
+ {
+ 	u32 payload = 0x00000000;
+ 
++	if (!ATH9K_HW_CAP_MCI)
++		return;
++
+ 	ar9003_mci_send_message(ah, MCI_LNA_TRANS, 0, &payload, 1,
+ 				wait_done, false);
+ }
+@@ -107,6 +113,9 @@ static void ar9003_mci_send_req_wake(str
+ 
+ void ar9003_mci_send_sys_waking(struct ath_hw *ah, bool wait_done)
+ {
++	if (!ATH9K_HW_CAP_MCI)
++		return;
++
+ 	ar9003_mci_send_message(ah, MCI_SYS_WAKING, MCI_FLAG_DISABLE_TIMESTAMP,
+ 				NULL, 0, wait_done, false);
+ }
+@@ -221,6 +230,9 @@ void ar9003_mci_send_coex_halt_bt_gpm(st
+ 	struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
+ 	u32 payload[4] = {0, 0, 0, 0};
+ 
++	if (!ATH9K_HW_CAP_MCI)
++		return;
++
+ 	ath_dbg(common, ATH_DBG_MCI, "MCI Send Coex %s BT GPM.\n",
+ 		(halt) ? "halt" : "unhalt");
+ 
+@@ -381,12 +393,17 @@ static void ar9003_mci_prep_interface(st
+ 
+ void ar9003_mci_disable_interrupt(struct ath_hw *ah)
+ {
++	if (!ATH9K_HW_CAP_MCI)
++		return;
++
+ 	REG_WRITE(ah, AR_MCI_INTERRUPT_EN, 0);
+ 	REG_WRITE(ah, AR_MCI_INTERRUPT_RX_MSG_EN, 0);
+ }
+ 
+ void ar9003_mci_enable_interrupt(struct ath_hw *ah)
+ {
++	if (!ATH9K_HW_CAP_MCI)
++		return;
+ 
+ 	REG_WRITE(ah, AR_MCI_INTERRUPT_EN, AR_MCI_INTERRUPT_DEFAULT);
+ 	REG_WRITE(ah, AR_MCI_INTERRUPT_RX_MSG_EN,
+@@ -397,6 +414,9 @@ bool ar9003_mci_check_int(struct ath_hw 
+ {
+ 	u32 intr;
+ 
++	if (!ATH9K_HW_CAP_MCI)
++		return false;
++
+ 	intr = REG_READ(ah, AR_MCI_INTERRUPT_RX_MSG_RAW);
+ 	return ((intr & ints) == ints);
+ }
+@@ -405,6 +425,10 @@ void ar9003_mci_get_interrupt(struct ath
+ 			      u32 *rx_msg_intr)
+ {
+ 	struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
++
++	if (!ATH9K_HW_CAP_MCI)
++		return;
++
+ 	*raw_intr = mci->raw_intr;
+ 	*rx_msg_intr = mci->rx_msg_intr;
+ 
+@@ -418,6 +442,9 @@ void ar9003_mci_2g5g_changed(struct ath_
+ {
+ 	struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
+ 
++	if (!ATH9K_HW_CAP_MCI)
++		return;
++
+ 	if (!mci->update_2g5g &&
+ 	    (mci->is_2g != is_2g))
+ 		mci->update_2g5g = true;
+@@ -531,6 +558,9 @@ void ar9003_mci_reset(struct ath_hw *ah,
+ 	struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
+ 	u32 regval, thresh;
+ 
++	if (!ATH9K_HW_CAP_MCI)
++		return;
++
+ 	ath_dbg(common, ATH_DBG_MCI, "MCI full_sleep = %d, is_2g = %d\n",
+ 		is_full_sleep, is_2g);
+ 
+@@ -661,6 +691,9 @@ void ar9003_mci_mute_bt(struct ath_hw *a
+ {
+ 	struct ath_common *common = ath9k_hw_common(ah);
+ 
++	if (!ATH9K_HW_CAP_MCI)
++		return;
++
+ 	/* disable all MCI messages */
+ 	REG_WRITE(ah, AR_MCI_MSG_ATTRIBUTES_TABLE, 0xffff0000);
+ 	REG_WRITE(ah, AR_BTCOEX_WL_WEIGHTS0, 0xffffffff);
+@@ -693,6 +726,9 @@ void ar9003_mci_sync_bt_state(struct ath
+ 	struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
+ 	u32 cur_bt_state;
+ 
++	if (!ATH9K_HW_CAP_MCI)
++		return;
++
+ 	cur_bt_state = ar9003_mci_state(ah, MCI_STATE_REMOTE_SLEEP, NULL);
+ 
+ 	if (mci->bt_state != cur_bt_state) {
+@@ -857,6 +893,9 @@ void ar9003_mci_2g5g_switch(struct ath_h
+ 	struct ath_common *common = ath9k_hw_common(ah);
+ 	struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
+ 
++	if (!ATH9K_HW_CAP_MCI)
++		return;
++
+ 	if (mci->update_2g5g) {
+ 		if (mci->is_2g) {
+ 
+@@ -908,6 +947,9 @@ bool ar9003_mci_send_message(struct ath_
+ 	u32 saved_mci_int_en;
+ 	int i;
+ 
++	if (!ATH9K_HW_CAP_MCI)
++		return false;
++
+ 	saved_mci_int_en = REG_READ(ah, AR_MCI_INTERRUPT_EN);
+ 	regval = REG_READ(ah, AR_BTCOEX_CTRL);
+ 
+@@ -973,6 +1015,9 @@ void ar9003_mci_setup(struct ath_hw *ah,
+ 	struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
+ 	void *sched_buf = (void *)((char *) gpm_buf + (sched_addr - gpm_addr));
+ 
++	if (!ATH9K_HW_CAP_MCI)
++		return;
++
+ 	mci->gpm_addr = gpm_addr;
+ 	mci->gpm_buf = gpm_buf;
+ 	mci->gpm_len = len;
+@@ -987,6 +1032,9 @@ void ar9003_mci_cleanup(struct ath_hw *a
+ {
+ 	struct ath_common *common = ath9k_hw_common(ah);
+ 
++	if (!ATH9K_HW_CAP_MCI)
++		return;
++
+ 	/* Turn off MCI and Jupiter mode. */
+ 	REG_WRITE(ah, AR_BTCOEX_CTRL, 0x00);
+ 	ath_dbg(common, ATH_DBG_MCI, "MCI ar9003_mci_cleanup\n");
+@@ -1056,6 +1104,9 @@ u32 ar9003_mci_wait_for_gpm(struct ath_h
+ 	u8 recv_type = 0, recv_opcode = 0;
+ 	bool b_is_bt_cal_done = (gpm_type == MCI_GPM_BT_CAL_DONE);
+ 
++	if (!ATH9K_HW_CAP_MCI)
++		return 0;
++
+ 	more_data = time_out ? MCI_GPM_NOMORE : MCI_GPM_MORE;
+ 
+ 	while (time_out > 0) {
+@@ -1188,6 +1239,9 @@ u32 ar9003_mci_state(struct ath_hw *ah, 
+ 	u32 value = 0, more_gpm = 0, gpm_ptr;
+ 	u8 query_type;
+ 
++	if (!ATH9K_HW_CAP_MCI)
++		return 0;
++
+ 	switch (state_type) {
+ 	case MCI_STATE_ENABLE:
+ 		if (mci->ready) {
+--- a/drivers/net/wireless/ath/ath9k/mci.c
++++ b/drivers/net/wireless/ath/ath9k/mci.c
+@@ -425,6 +425,9 @@ int ath_mci_setup(struct ath_softc *sc)
+ 	struct ath_mci_coex *mci = &sc->mci_coex;
+ 	int error = 0;
+ 
++	if (!ATH9K_HW_CAP_MCI)
++		return 0;
++
+ 	mci->sched_buf.bf_len = ATH_MCI_SCHED_BUF_SIZE + ATH_MCI_GPM_BUF_SIZE;
+ 
+ 	if (ath_mci_buf_alloc(sc, &mci->sched_buf)) {
+@@ -458,6 +461,9 @@ void ath_mci_cleanup(struct ath_softc *s
+ 	struct ath_hw *ah = sc->sc_ah;
+ 	struct ath_mci_coex *mci = &sc->mci_coex;
+ 
++	if (!ATH9K_HW_CAP_MCI)
++		return;
++
+ 	/*
+ 	 * both schedule and gpm buffers will be released
+ 	 */
+@@ -476,6 +482,9 @@ void ath_mci_intr(struct ath_softc *sc)
+ 	u32 more_data = MCI_GPM_MORE;
+ 	bool skip_gpm = false;
+ 
++	if (!ATH9K_HW_CAP_MCI)
++		return;
++
+ 	ar9003_mci_get_interrupt(sc->sc_ah, &mci_int, &mci_int_rxmsg);
+ 
+ 	if (ar9003_mci_state(ah, MCI_STATE_ENABLE, NULL) == 0) {