1 files changed, 82 insertions, 20 deletions

diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index 3a16ba256ef9..f2de7ee047ce 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -580,6 +580,7 @@ static int __ath9k_hw_init(struct ath_hw *ah)
 	case AR_SREV_VERSION_9330:
 	case AR_SREV_VERSION_9485:
 	case AR_SREV_VERSION_9340:
+	case AR_SREV_VERSION_9480:
 		break;
 	default:
 		ath_err(common,
@@ -664,6 +665,7 @@ int ath9k_hw_init(struct ath_hw *ah)
 	case AR9300_DEVID_AR9330:
 	case AR9300_DEVID_AR9340:
 	case AR9300_DEVID_AR9580:
+	case AR9300_DEVID_AR9480:
 		break;
 	default:
 		if (common->bus_ops->ath_bus_type == ATH_USB)
@@ -960,7 +962,7 @@ void ath9k_hw_init_global_settings(struct ath_hw *ah)
 	struct ath_common *common = ath9k_hw_common(ah);
 	struct ieee80211_conf *conf = &common->hw->conf;
 	const struct ath9k_channel *chan = ah->curchan;
-	int acktimeout;
+	int acktimeout, ctstimeout;
 	int slottime;
 	int sifstime;
 	int rx_lat = 0, tx_lat = 0, eifs = 0;
@@ -975,7 +977,10 @@ void ath9k_hw_init_global_settings(struct ath_hw *ah)
 	if (ah->misc_mode != 0)
 		REG_SET_BIT(ah, AR_PCU_MISC, ah->misc_mode);
 
-	rx_lat = 37;
+	if (IS_CHAN_A_FAST_CLOCK(ah, chan))
+		rx_lat = 41;
+	else
+		rx_lat = 37;
 	tx_lat = 54;
 
 	if (IS_CHAN_HALF_RATE(chan)) {
@@ -989,7 +994,7 @@ void ath9k_hw_init_global_settings(struct ath_hw *ah)
 		sifstime = 32;
 	} else if (IS_CHAN_QUARTER_RATE(chan)) {
 		eifs = 340;
-		rx_lat *= 4;
+		rx_lat = (rx_lat * 4) - 1;
 		tx_lat *= 4;
 		if (IS_CHAN_A_FAST_CLOCK(ah, chan))
 		    tx_lat += 22;
@@ -1017,6 +1022,7 @@ void ath9k_hw_init_global_settings(struct ath_hw *ah)
 
 	/* As defined by IEEE 802.11-2007 17.3.8.6 */
 	acktimeout = slottime + sifstime + 3 * ah->coverage_class;
+	ctstimeout = acktimeout;
 
 	/*
 	 * Workaround for early ACK timeouts, add an offset to match the
@@ -1031,7 +1037,7 @@ void ath9k_hw_init_global_settings(struct ath_hw *ah)
 	ath9k_hw_set_sifs_time(ah, sifstime);
 	ath9k_hw_setslottime(ah, slottime);
 	ath9k_hw_set_ack_timeout(ah, acktimeout);
-	ath9k_hw_set_cts_timeout(ah, acktimeout);
+	ath9k_hw_set_cts_timeout(ah, ctstimeout);
 	if (ah->globaltxtimeout != (u32) -1)
 		ath9k_hw_set_global_txtimeout(ah, ah->globaltxtimeout);
 
@@ -1336,6 +1342,7 @@ static bool ath9k_hw_set_reset_power_on(struct ath_hw *ah)
 
 static bool ath9k_hw_set_reset_reg(struct ath_hw *ah, u32 type)
 {
+
 	if (AR_SREV_9300_20_OR_LATER(ah)) {
 		REG_WRITE(ah, AR_WA, ah->WARegVal);
 		udelay(10);
@@ -1475,9 +1482,6 @@ int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan,
 	u64 tsf = 0;
 	int i, r;
 
-	ah->txchainmask = common->tx_chainmask;
-	ah->rxchainmask = common->rx_chainmask;
-
 	if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE))
 		return -EIO;
 
@@ -1495,14 +1499,16 @@ int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan,
 	}
 	ah->noise = ath9k_hw_getchan_noise(ah, chan);
 
+	if ((AR_SREV_9280(ah) && common->bus_ops->ath_bus_type == ATH_PCI) ||
+	    (AR_SREV_9300_20_OR_LATER(ah) && IS_CHAN_5GHZ(chan)))
+		bChannelChange = false;
+
 	if (bChannelChange &&
 	    (ah->chip_fullsleep != true) &&
 	    (ah->curchan != NULL) &&
 	    (chan->channel != ah->curchan->channel) &&
 	    ((chan->channelFlags & CHANNEL_ALL) ==
-	     (ah->curchan->channelFlags & CHANNEL_ALL)) &&
-	    (!AR_SREV_9280(ah) || AR_DEVID_7010(ah))) {
-
+	     (ah->curchan->channelFlags & CHANNEL_ALL))) {
 		if (ath9k_hw_channel_change(ah, chan)) {
 			ath9k_hw_loadnf(ah, ah->curchan);
 			ath9k_hw_start_nfcal(ah, true);
@@ -1742,25 +1748,41 @@ static void ath9k_set_power_sleep(struct ath_hw *ah, int setChip)
 {
 	REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SAV);
 	if (setChip) {
+		if (AR_SREV_9480(ah)) {
+			REG_WRITE(ah, AR_TIMER_MODE,
+				  REG_READ(ah, AR_TIMER_MODE) & 0xFFFFFF00);
+			REG_WRITE(ah, AR_NDP2_TIMER_MODE, REG_READ(ah,
+				  AR_NDP2_TIMER_MODE) & 0xFFFFFF00);
+			REG_WRITE(ah, AR_SLP32_INC,
+				  REG_READ(ah, AR_SLP32_INC) & 0xFFF00000);
+			/* xxx Required for WLAN only case ? */
+			REG_WRITE(ah, AR_MCI_INTERRUPT_RX_MSG_EN, 0);
+			udelay(100);
+		}
+
 		/*
 		 * Clear the RTC force wake bit to allow the
 		 * mac to go to sleep.
 		 */
-		REG_CLR_BIT(ah, AR_RTC_FORCE_WAKE,
-			    AR_RTC_FORCE_WAKE_EN);
+		REG_CLR_BIT(ah, AR_RTC_FORCE_WAKE, AR_RTC_FORCE_WAKE_EN);
+
+		if (AR_SREV_9480(ah))
+			udelay(100);
+
 		if (!AR_SREV_9100(ah) && !AR_SREV_9300_20_OR_LATER(ah))
 			REG_WRITE(ah, AR_RC, AR_RC_AHB | AR_RC_HOSTIF);
 
 		/* Shutdown chip. Active low */
-		if (!AR_SREV_5416(ah) && !AR_SREV_9271(ah))
-			REG_CLR_BIT(ah, (AR_RTC_RESET),
-				    AR_RTC_RESET_EN);
+		if (!AR_SREV_5416(ah) &&
+				!AR_SREV_9271(ah) && !AR_SREV_9480_10(ah)) {
+			REG_CLR_BIT(ah, AR_RTC_RESET, AR_RTC_RESET_EN);
+			udelay(2);
+		}
 	}
 
 	/* Clear Bit 14 of AR_WA after putting chip into Full Sleep mode. */
-	if (AR_SREV_9300_20_OR_LATER(ah))
-		REG_WRITE(ah, AR_WA,
-			  ah->WARegVal & ~AR_WA_D3_L1_DISABLE);
+	if (!AR_SREV_9480(ah))
+		REG_WRITE(ah, AR_WA, ah->WARegVal & ~AR_WA_D3_L1_DISABLE);
 }
 
 /*
@@ -1770,6 +1792,8 @@ static void ath9k_set_power_sleep(struct ath_hw *ah, int setChip)
  */
 static void ath9k_set_power_network_sleep(struct ath_hw *ah, int setChip)
 {
+	u32 val;
+
 	REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SAV);
 	if (setChip) {
 		struct ath9k_hw_capabilities *pCap = &ah->caps;
@@ -1779,12 +1803,30 @@ static void ath9k_set_power_network_sleep(struct ath_hw *ah, int setChip)
 			REG_WRITE(ah, AR_RTC_FORCE_WAKE,
 				  AR_RTC_FORCE_WAKE_ON_INT);
 		} else {
+
+			/* When chip goes into network sleep, it could be waken
+			 * up by MCI_INT interrupt caused by BT's HW messages
+			 * (LNA_xxx, CONT_xxx) which chould be in a very fast
+			 * rate (~100us). This will cause chip to leave and
+			 * re-enter network sleep mode frequently, which in
+			 * consequence will have WLAN MCI HW to generate lots of
+			 * SYS_WAKING and SYS_SLEEPING messages which will make
+			 * BT CPU to busy to process.
+			 */
+			if (AR_SREV_9480(ah)) {
+				val = REG_READ(ah, AR_MCI_INTERRUPT_RX_MSG_EN) &
+					~AR_MCI_INTERRUPT_RX_HW_MSG_MASK;
+				REG_WRITE(ah, AR_MCI_INTERRUPT_RX_MSG_EN, val);
+			}
 			/*
 			 * Clear the RTC force wake bit to allow the
 			 * mac to go to sleep.
 			 */
 			REG_CLR_BIT(ah, AR_RTC_FORCE_WAKE,
 				    AR_RTC_FORCE_WAKE_EN);
+
+			if (AR_SREV_9480(ah))
+				udelay(30);
 		}
 	}
 
@@ -2091,6 +2133,8 @@ int ath9k_hw_fill_cap_info(struct ath_hw *ah)
 
 	pCap->tx_chainmask = fixup_chainmask(chip_chainmask, pCap->tx_chainmask);
 	pCap->rx_chainmask = fixup_chainmask(chip_chainmask, pCap->rx_chainmask);
+	ah->txchainmask = pCap->tx_chainmask;
+	ah->rxchainmask = pCap->rx_chainmask;
 
 	ah->misc_mode |= AR_PCU_MIC_NEW_LOC_ENA;
 
@@ -2401,6 +2445,9 @@ void ath9k_hw_setrxfilter(struct ath_hw *ah, u32 bits)
 
 	ENABLE_REGWRITE_BUFFER(ah);
 
+	if (AR_SREV_9480(ah))
+		bits |= ATH9K_RX_FILTER_CONTROL_WRAPPER;
+
 	REG_WRITE(ah, AR_RX_FILTER, bits);
 
 	phybits = 0;
@@ -2447,13 +2494,13 @@ void ath9k_hw_set_txpowerlimit(struct ath_hw *ah, u32 limit, bool test)
 	struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
 	struct ath9k_channel *chan = ah->curchan;
 	struct ieee80211_channel *channel = chan->chan;
-	int reg_pwr = min_t(int, MAX_RATE_POWER, regulatory->power_limit);
+	int reg_pwr = min_t(int, MAX_RATE_POWER, limit);
 	int chan_pwr = channel->max_power * 2;
 
 	if (test)
 		reg_pwr = chan_pwr = MAX_RATE_POWER;
 
-	regulatory->power_limit = min(limit, (u32) MAX_RATE_POWER);
+	regulatory->power_limit = reg_pwr;
 
 	ah->eep_ops->set_txpower(ah, chan,
 				 ath9k_regd_get_ctl(regulatory, chan),
@@ -2657,6 +2704,20 @@ void ath9k_hw_gen_timer_start(struct ath_hw *ah,
 	REG_SET_BIT(ah, gen_tmr_configuration[timer->index].mode_addr,
 		    gen_tmr_configuration[timer->index].mode_mask);
 
+	if (AR_SREV_9480(ah)) {
+		/*
+		 * Starting from AR9480, each generic timer can select which tsf
+		 * to use. But we still follow the old rule, 0 - 7 use tsf and
+		 * 8 - 15  use tsf2.
+		 */
+		if ((timer->index < AR_GEN_TIMER_BANK_1_LEN))
+			REG_CLR_BIT(ah, AR_MAC_PCU_GEN_TIMER_TSF_SEL,
+				       (1 << timer->index));
+		else
+			REG_SET_BIT(ah, AR_MAC_PCU_GEN_TIMER_TSF_SEL,
+				       (1 << timer->index));
+	}
+
 	/* Enable both trigger and thresh interrupt masks */
 	REG_SET_BIT(ah, AR_IMR_S5,
 		(SM(AR_GENTMR_BIT(timer->index), AR_IMR_S5_GENTIMER_THRESH) |
@@ -2762,6 +2823,7 @@ static struct {
 	{ AR_SREV_VERSION_9330,         "9330" },
 	{ AR_SREV_VERSION_9340,		"9340" },
 	{ AR_SREV_VERSION_9485,         "9485" },
+	{ AR_SREV_VERSION_9480,         "9480" },
 };
 
 /* For devices with external radios */