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ath9k: Add Bluetooth Coexistence 3-wire support

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This patch adds 3-wire bluetooth coex support for AR9285.
This support can be enabled through btcoex_enable modparam.

Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Vasanthakumar Thiagarajan
2009-08-26 21:08:50 +05:30
committed by John W. Linville
parent ff155a45ce
commit 1773912bd2
9 changed files with 423 additions and 27 deletions
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34
drivers/net/wireless/ath/ath9k/main.c
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@ -602,6 +602,10 @@ irqreturn_t ath_isr(int irq, void *dev)
sc->sc_flags |= SC_OP_WAIT_FOR_BEACON;
}
if (sc->btcoex_info.btcoex_scheme == ATH_BTCOEX_CFG_3WIRE)
if (status & ATH9K_INT_GENTIMER)
ath_gen_timer_isr(ah);
chip_reset:
ath_debug_stat_interrupt(sc, status);
@ -1279,6 +1283,10 @@ void ath_detach(struct ath_softc *sc)
if (ATH_TXQ_SETUP(sc, i))
ath_tx_cleanupq(sc, &sc->tx.txq[i]);
if ((sc->btcoex_info.no_stomp_timer) &&
sc->btcoex_info.btcoex_scheme == ATH_BTCOEX_CFG_3WIRE)
ath_gen_timer_free(sc->sc_ah, sc->btcoex_info.no_stomp_timer);
ath9k_hw_detach(sc->sc_ah);
sc->sc_ah = NULL;
ath9k_exit_debug(sc);
@ -1509,8 +1517,11 @@ static int ath_init_softc(u16 devid, struct ath_softc *sc)
ARRAY_SIZE(ath9k_5ghz_chantable);
}
if (sc->btcoex_info.btcoex_scheme == ATH_BTCOEX_CFG_2WIRE)
ath9k_hw_btcoex_init(ah);
if (sc->btcoex_info.btcoex_scheme != ATH_BTCOEX_CFG_NONE) {
r = ath9k_hw_btcoex_init(ah);
if (r)
goto bad2;
}
return 0;
bad2:
@ -1992,10 +2003,16 @@ static int ath9k_start(struct ieee80211_hw *hw)
ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work, 0);
if ((sc->btcoex_info.btcoex_scheme == ATH_BTCOEX_CFG_2WIRE) &&
!(sc->sc_flags & SC_OP_BTCOEX_ENABLED))
if ((sc->btcoex_info.btcoex_scheme != ATH_BTCOEX_CFG_NONE) &&
!(sc->sc_flags & SC_OP_BTCOEX_ENABLED)) {
ath_btcoex_set_weight(&sc->btcoex_info, AR_BT_COEX_WGHT,
AR_STOMP_LOW_WLAN_WGHT);
ath9k_hw_btcoex_enable(sc->sc_ah);
if (sc->btcoex_info.btcoex_scheme == ATH_BTCOEX_CFG_3WIRE)
ath_btcoex_timer_resume(sc, &sc->btcoex_info);
}
mutex_unlock:
mutex_unlock(&sc->mutex);
@ -2129,6 +2146,12 @@ static void ath9k_stop(struct ieee80211_hw *hw)
return; /* another wiphy still in use */
}
if (sc->sc_flags & SC_OP_BTCOEX_ENABLED) {
ath9k_hw_btcoex_disable(sc->sc_ah);
if (sc->btcoex_info.btcoex_scheme == ATH_BTCOEX_CFG_3WIRE)
ath_btcoex_timer_pause(sc, &sc->btcoex_info);
}
/* make sure h/w will not generate any interrupt
* before setting the invalid flag. */
ath9k_hw_set_interrupts(sc->sc_ah, 0);
@ -2142,9 +2165,6 @@ static void ath9k_stop(struct ieee80211_hw *hw)
wiphy_rfkill_stop_polling(sc->hw->wiphy);
if (sc->sc_flags & SC_OP_BTCOEX_ENABLED)
ath9k_hw_btcoex_disable(sc->sc_ah);
/* disable HAL and put h/w to sleep */
ath9k_hw_disable(sc->sc_ah);
ath9k_hw_configpcipowersave(sc->sc_ah, 1);