--- /dev/null
+--- a/drivers/net/wireless/ath/ath9k/ath9k.h
++++ b/drivers/net/wireless/ath/ath9k/ath9k.h
+@@ -511,13 +511,12 @@ void ath_deinit_leds(struct ath_softc *s
+ #define SC_OP_BEACONS BIT(1)
+ #define SC_OP_RXAGGR BIT(2)
+ #define SC_OP_TXAGGR BIT(3)
+-#define SC_OP_FULL_RESET BIT(4)
+ #define SC_OP_PREAMBLE_SHORT BIT(5)
+ #define SC_OP_PROTECT_ENABLE BIT(6)
+ #define SC_OP_RXFLUSH BIT(7)
+ #define SC_OP_LED_ASSOCIATED BIT(8)
+ #define SC_OP_LED_ON BIT(9)
+-#define SC_OP_SCANNING BIT(10)
++#define SC_OP_OFFCHANNEL BIT(10)
+ #define SC_OP_TSF_RESET BIT(11)
+ #define SC_OP_BT_PRIORITY_DETECTED BIT(12)
+ #define SC_OP_BT_SCAN BIT(13)
+--- a/drivers/net/wireless/ath/ath9k/main.c
++++ b/drivers/net/wireless/ath/ath9k/main.c
+@@ -155,6 +155,27 @@ void ath9k_ps_restore(struct ath_softc *
+ spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
+ }
+
++static void ath_start_ani(struct ath_common *common)
++{
++ struct ath_hw *ah = common->ah;
++ unsigned long timestamp = jiffies_to_msecs(jiffies);
++ struct ath_softc *sc = (struct ath_softc *) common->priv;
++
++ if (!(sc->sc_flags & SC_OP_ANI_RUN))
++ return;
++
++ if (sc->sc_flags & SC_OP_OFFCHANNEL)
++ return;
++
++ common->ani.longcal_timer = timestamp;
++ common->ani.shortcal_timer = timestamp;
++ common->ani.checkani_timer = timestamp;
++
++ mod_timer(&common->ani.timer,
++ jiffies +
++ msecs_to_jiffies((u32)ah->config.ani_poll_interval));
++}
++
+ /*
+ * Set/change channels. If the channel is really being changed, it's done
+ * by reseting the chip. To accomplish this we must first cleanup any pending
+@@ -173,6 +194,11 @@ int ath_set_channel(struct ath_softc *sc
+ if (sc->sc_flags & SC_OP_INVALID)
+ return -EIO;
+
++ del_timer_sync(&common->ani.timer);
++ cancel_work_sync(&sc->paprd_work);
++ cancel_work_sync(&sc->hw_check_work);
++ cancel_delayed_work_sync(&sc->tx_complete_work);
++
+ ath9k_ps_wakeup(sc);
+
+ /*
+@@ -192,7 +218,7 @@ int ath_set_channel(struct ath_softc *sc
+ * to flush data frames already in queue because of
+ * changing channel. */
+
+- if (!stopped || (sc->sc_flags & SC_OP_FULL_RESET))
++ if (!stopped || !(sc->sc_flags & SC_OP_OFFCHANNEL))
+ fastcc = false;
+
+ ath_print(common, ATH_DBG_CONFIG,
+@@ -213,8 +239,6 @@ int ath_set_channel(struct ath_softc *sc
+ }
+ spin_unlock_bh(&sc->sc_resetlock);
+
+- sc->sc_flags &= ~SC_OP_FULL_RESET;
+-
+ if (ath_startrecv(sc) != 0) {
+ ath_print(common, ATH_DBG_FATAL,
+ "Unable to restart recv logic\n");
+@@ -226,6 +250,12 @@ int ath_set_channel(struct ath_softc *sc
+ ath_update_txpow(sc);
+ ath9k_hw_set_interrupts(ah, ah->imask);
+
++ if (!(sc->sc_flags & SC_OP_OFFCHANNEL)) {
++ ath_start_ani(common);
++ ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work, 0);
++ ath_beacon_config(sc, NULL);
++ }
++
+ ps_restore:
+ ath9k_ps_restore(sc);
+ return r;
+@@ -440,8 +470,7 @@ set_timer:
+ cal_interval = min(cal_interval, (u32)short_cal_interval);
+
+ mod_timer(&common->ani.timer, jiffies + msecs_to_jiffies(cal_interval));
+- if ((sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_PAPRD) &&
+- !(sc->sc_flags & SC_OP_SCANNING)) {
++ if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_PAPRD) {
+ if (!sc->sc_ah->curchan->paprd_done)
+ ieee80211_queue_work(sc->hw, &sc->paprd_work);
+ else
+@@ -449,24 +478,6 @@ set_timer:
+ }
+ }
+
+-static void ath_start_ani(struct ath_common *common)
+-{
+- struct ath_hw *ah = common->ah;
+- unsigned long timestamp = jiffies_to_msecs(jiffies);
+- struct ath_softc *sc = (struct ath_softc *) common->priv;
+-
+- if (!(sc->sc_flags & SC_OP_ANI_RUN))
+- return;
+-
+- common->ani.longcal_timer = timestamp;
+- common->ani.shortcal_timer = timestamp;
+- common->ani.checkani_timer = timestamp;
+-
+- mod_timer(&common->ani.timer,
+- jiffies +
+- msecs_to_jiffies((u32)ah->config.ani_poll_interval));
+-}
+-
+ /*
+ * Update tx/rx chainmask. For legacy association,
+ * hard code chainmask to 1x1, for 11n association, use
+@@ -478,7 +489,7 @@ void ath_update_chainmask(struct ath_sof
+ struct ath_hw *ah = sc->sc_ah;
+ struct ath_common *common = ath9k_hw_common(ah);
+
+- if ((sc->sc_flags & SC_OP_SCANNING) || is_ht ||
++ if ((sc->sc_flags & SC_OP_OFFCHANNEL) || is_ht ||
+ (ah->btcoex_hw.scheme != ATH_BTCOEX_CFG_NONE)) {
+ common->tx_chainmask = ah->caps.tx_chainmask;
+ common->rx_chainmask = ah->caps.rx_chainmask;
+@@ -1580,6 +1591,10 @@ static int ath9k_config(struct ieee80211
+
+ aphy->chan_idx = pos;
+ aphy->chan_is_ht = conf_is_ht(conf);
++ if (hw->conf.flags & IEEE80211_CONF_OFFCHANNEL)
++ sc->sc_flags |= SC_OP_OFFCHANNEL;
++ else
++ sc->sc_flags &= ~SC_OP_OFFCHANNEL;
+
+ if (aphy->state == ATH_WIPHY_SCAN ||
+ aphy->state == ATH_WIPHY_ACTIVE)
+@@ -1991,7 +2006,6 @@ static void ath9k_sw_scan_start(struct i
+ {
+ struct ath_wiphy *aphy = hw->priv;
+ struct ath_softc *sc = aphy->sc;
+- struct ath_common *common = ath9k_hw_common(sc->sc_ah);
+
+ mutex_lock(&sc->mutex);
+ if (ath9k_wiphy_scanning(sc)) {
+@@ -2007,11 +2021,6 @@ static void ath9k_sw_scan_start(struct i
+
+ aphy->state = ATH_WIPHY_SCAN;
+ ath9k_wiphy_pause_all_forced(sc, aphy);
+- sc->sc_flags |= SC_OP_SCANNING;
+- del_timer_sync(&common->ani.timer);
+- cancel_work_sync(&sc->paprd_work);
+- cancel_work_sync(&sc->hw_check_work);
+- cancel_delayed_work_sync(&sc->tx_complete_work);
+ mutex_unlock(&sc->mutex);
+ }
+
+@@ -2019,15 +2028,9 @@ static void ath9k_sw_scan_complete(struc
+ {
+ struct ath_wiphy *aphy = hw->priv;
+ struct ath_softc *sc = aphy->sc;
+- struct ath_common *common = ath9k_hw_common(sc->sc_ah);
+
+ mutex_lock(&sc->mutex);
+ aphy->state = ATH_WIPHY_ACTIVE;
+- sc->sc_flags &= ~SC_OP_SCANNING;
+- sc->sc_flags |= SC_OP_FULL_RESET;
+- ath_start_ani(common);
+- ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work, 0);
+- ath_beacon_config(sc, NULL);
+ mutex_unlock(&sc->mutex);
+ }
+
+--- a/drivers/net/wireless/ath/ath9k/recv.c
++++ b/drivers/net/wireless/ath/ath9k/recv.c
+@@ -292,7 +292,7 @@ static void ath_edma_start_recv(struct a
+
+ ath_opmode_init(sc);
+
+- ath9k_hw_startpcureceive(sc->sc_ah, (sc->sc_flags & SC_OP_SCANNING));
++ ath9k_hw_startpcureceive(sc->sc_ah, (sc->sc_flags & SC_OP_OFFCHANNEL));
+ }
+
+ static void ath_edma_stop_recv(struct ath_softc *sc)
+@@ -498,7 +498,7 @@ int ath_startrecv(struct ath_softc *sc)
+ start_recv:
+ spin_unlock_bh(&sc->rx.rxbuflock);
+ ath_opmode_init(sc);
+- ath9k_hw_startpcureceive(ah, (sc->sc_flags & SC_OP_SCANNING));
++ ath9k_hw_startpcureceive(ah, (sc->sc_flags & SC_OP_OFFCHANNEL));
+
+ return 0;
+ }
--- /dev/null
+--- a/drivers/net/wireless/ath/ath9k/hw.h
++++ b/drivers/net/wireless/ath/ath9k/hw.h
+@@ -346,19 +346,24 @@ enum ath9k_int {
+ CHANNEL_HT40PLUS | \
+ CHANNEL_HT40MINUS)
+
+-struct ath9k_channel {
+- struct ieee80211_channel *chan;
++struct ath9k_hw_cal_data {
+ u16 channel;
+ u32 channelFlags;
+- u32 chanmode;
+ int32_t CalValid;
+- bool oneTimeCalsDone;
+ int8_t iCoff;
+ int8_t qCoff;
+ int16_t rawNoiseFloor;
+ bool paprd_done;
+ u16 small_signal_gain[AR9300_MAX_CHAINS];
+ u32 pa_table[AR9300_MAX_CHAINS][PAPRD_TABLE_SZ];
++ struct ath9k_nfcal_hist nfCalHist[NUM_NF_READINGS];
++};
++
++struct ath9k_channel {
++ struct ieee80211_channel *chan;
++ u16 channel;
++ u32 channelFlags;
++ u32 chanmode;
+ };
+
+ #define IS_CHAN_G(_c) ((((_c)->channelFlags & (CHANNEL_G)) == CHANNEL_G) || \
+@@ -669,7 +674,7 @@ struct ath_hw {
+ enum nl80211_iftype opmode;
+ enum ath9k_power_mode power_mode;
+
+- struct ath9k_nfcal_hist nfCalHist[NUM_NF_READINGS];
++ struct ath9k_hw_cal_data *caldata;
+ struct ath9k_pacal_info pacal_info;
+ struct ar5416Stats stats;
+ struct ath9k_tx_queue_info txq[ATH9K_NUM_TX_QUEUES];
+@@ -863,7 +868,7 @@ const char *ath9k_hw_probe(u16 vendorid,
+ void ath9k_hw_deinit(struct ath_hw *ah);
+ int ath9k_hw_init(struct ath_hw *ah);
+ int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan,
+- bool bChannelChange);
++ struct ath9k_hw_cal_data *caldata, bool bChannelChange);
+ int ath9k_hw_fill_cap_info(struct ath_hw *ah);
+ u32 ath9k_regd_get_ctl(struct ath_regulatory *reg, struct ath9k_channel *chan);
+
+@@ -958,9 +963,10 @@ void ar9003_hw_bb_watchdog_read(struct a
+ void ar9003_hw_bb_watchdog_dbg_info(struct ath_hw *ah);
+ void ar9003_paprd_enable(struct ath_hw *ah, bool val);
+ void ar9003_paprd_populate_single_table(struct ath_hw *ah,
+- struct ath9k_channel *chan, int chain);
+-int ar9003_paprd_create_curve(struct ath_hw *ah, struct ath9k_channel *chan,
+- int chain);
++ struct ath9k_hw_cal_data *caldata,
++ int chain);
++int ar9003_paprd_create_curve(struct ath_hw *ah,
++ struct ath9k_hw_cal_data *caldata, int chain);
+ int ar9003_paprd_setup_gain_table(struct ath_hw *ah, int chain);
+ int ar9003_paprd_init_table(struct ath_hw *ah);
+ bool ar9003_paprd_is_done(struct ath_hw *ah);
+--- a/drivers/net/wireless/ath/ath9k/calib.c
++++ b/drivers/net/wireless/ath/ath9k/calib.c
+@@ -22,23 +22,6 @@
+ /* We can tune this as we go by monitoring really low values */
+ #define ATH9K_NF_TOO_LOW -60
+
+-/* AR5416 may return very high value (like -31 dBm), in those cases the nf
+- * is incorrect and we should use the static NF value. Later we can try to
+- * find out why they are reporting these values */
+-
+-static bool ath9k_hw_nf_in_range(struct ath_hw *ah, s16 nf)
+-{
+- if (nf > ATH9K_NF_TOO_LOW) {
+- ath_print(ath9k_hw_common(ah), ATH_DBG_CALIBRATE,
+- "noise floor value detected (%d) is "
+- "lower than what we think is a "
+- "reasonable value (%d)\n",
+- nf, ATH9K_NF_TOO_LOW);
+- return false;
+- }
+- return true;
+-}
+-
+ static int16_t ath9k_hw_get_nf_hist_mid(int16_t *nfCalBuffer)
+ {
+ int16_t nfval;
+@@ -121,6 +104,19 @@ void ath9k_hw_reset_calibration(struct a
+ ah->cal_samples = 0;
+ }
+
++static s16 ath9k_hw_get_default_nf(struct ath_hw *ah,
++ struct ath9k_channel *chan)
++{
++ struct ath_nf_limits *limit;
++
++ if (!chan || IS_CHAN_2GHZ(chan))
++ limit = &ah->nf_2g;
++ else
++ limit = &ah->nf_5g;
++
++ return limit->nominal;
++}
++
+ /* This is done for the currently configured channel */
+ bool ath9k_hw_reset_calvalid(struct ath_hw *ah)
+ {
+@@ -128,7 +124,7 @@ bool ath9k_hw_reset_calvalid(struct ath_
+ struct ieee80211_conf *conf = &common->hw->conf;
+ struct ath9k_cal_list *currCal = ah->cal_list_curr;
+
+- if (!ah->curchan)
++ if (!ah->caldata)
+ return true;
+
+ if (!AR_SREV_9100(ah) && !AR_SREV_9160_10_OR_LATER(ah))
+@@ -151,7 +147,7 @@ bool ath9k_hw_reset_calvalid(struct ath_
+ "Resetting Cal %d state for channel %u\n",
+ currCal->calData->calType, conf->channel->center_freq);
+
+- ah->curchan->CalValid &= ~currCal->calData->calType;
++ ah->caldata->CalValid &= ~currCal->calData->calType;
+ currCal->calState = CAL_WAITING;
+
+ return false;
+@@ -169,19 +165,28 @@ void ath9k_hw_start_nfcal(struct ath_hw
+
+ void ath9k_hw_loadnf(struct ath_hw *ah, struct ath9k_channel *chan)
+ {
+- struct ath9k_nfcal_hist *h;
++ struct ath9k_nfcal_hist *h = NULL;
+ unsigned i, j;
+ int32_t val;
+ u8 chainmask = (ah->rxchainmask << 3) | ah->rxchainmask;
+ struct ath_common *common = ath9k_hw_common(ah);
++ s16 default_nf = ath9k_hw_get_default_nf(ah, chan);
+
+- h = ah->nfCalHist;
++ if (ah->caldata)
++ h = ah->caldata->nfCalHist;
+
+ for (i = 0; i < NUM_NF_READINGS; i++) {
+ if (chainmask & (1 << i)) {
++ s16 nfval;
++
++ if (h)
++ nfval = h[i].privNF;
++ else
++ nfval = default_nf;
++
+ val = REG_READ(ah, ah->nf_regs[i]);
+ val &= 0xFFFFFE00;
+- val |= (((u32) (h[i].privNF) << 1) & 0x1ff);
++ val |= (((u32) nfval << 1) & 0x1ff);
+ REG_WRITE(ah, ah->nf_regs[i], val);
+ }
+ }
+@@ -285,14 +290,18 @@ int16_t ath9k_hw_getnf(struct ath_hw *ah
+ int16_t nfarray[NUM_NF_READINGS] = { 0 };
+ struct ath9k_nfcal_hist *h;
+ struct ieee80211_channel *c = chan->chan;
++ struct ath9k_hw_cal_data *caldata = ah->caldata;
++
++ if (!caldata)
++ return ath9k_hw_get_default_nf(ah, chan);
+
+ chan->channelFlags &= (~CHANNEL_CW_INT);
+ if (REG_READ(ah, AR_PHY_AGC_CONTROL) & AR_PHY_AGC_CONTROL_NF) {
+ ath_print(common, ATH_DBG_CALIBRATE,
+ "NF did not complete in calibration window\n");
+ nf = 0;
+- chan->rawNoiseFloor = nf;
+- return chan->rawNoiseFloor;
++ caldata->rawNoiseFloor = nf;
++ return caldata->rawNoiseFloor;
+ } else {
+ ath9k_hw_do_getnf(ah, nfarray);
+ ath9k_hw_nf_sanitize(ah, nfarray);
+@@ -307,47 +316,41 @@ int16_t ath9k_hw_getnf(struct ath_hw *ah
+ }
+ }
+
+- h = ah->nfCalHist;
++ h = caldata->nfCalHist;
+
+ ath9k_hw_update_nfcal_hist_buffer(h, nfarray);
+- chan->rawNoiseFloor = h[0].privNF;
++ caldata->rawNoiseFloor = h[0].privNF;
+
+- return chan->rawNoiseFloor;
++ return ah->caldata->rawNoiseFloor;
+ }
+
+-void ath9k_init_nfcal_hist_buffer(struct ath_hw *ah)
++void ath9k_init_nfcal_hist_buffer(struct ath_hw *ah,
++ struct ath9k_channel *chan)
+ {
+- struct ath_nf_limits *limit;
++ struct ath9k_nfcal_hist *h;
++ s16 default_nf;
+ int i, j;
+
+- if (!ah->curchan || IS_CHAN_2GHZ(ah->curchan))
+- limit = &ah->nf_2g;
+- else
+- limit = &ah->nf_5g;
++ if (!ah->caldata)
++ return;
+
++ h = ah->caldata->nfCalHist;
++ default_nf = ath9k_hw_get_default_nf(ah, chan);
+ for (i = 0; i < NUM_NF_READINGS; i++) {
+- ah->nfCalHist[i].currIndex = 0;
+- ah->nfCalHist[i].privNF = limit->nominal;
+- ah->nfCalHist[i].invalidNFcount =
+- AR_PHY_CCA_FILTERWINDOW_LENGTH;
++ h[i].currIndex = 0;
++ h[i].privNF = default_nf;
++ h[i].invalidNFcount = AR_PHY_CCA_FILTERWINDOW_LENGTH;
+ for (j = 0; j < ATH9K_NF_CAL_HIST_MAX; j++) {
+- ah->nfCalHist[i].nfCalBuffer[j] = limit->nominal;
++ h[i].nfCalBuffer[j] = default_nf;
+ }
+ }
+ }
+
+ s16 ath9k_hw_getchan_noise(struct ath_hw *ah, struct ath9k_channel *chan)
+ {
+- s16 nf;
+-
+- if (chan->rawNoiseFloor == 0)
+- nf = -96;
+- else
+- nf = chan->rawNoiseFloor;
+-
+- if (!ath9k_hw_nf_in_range(ah, nf))
+- nf = ATH_DEFAULT_NOISE_FLOOR;
++ if (!ah->caldata || !ah->caldata->rawNoiseFloor)
++ return ath9k_hw_get_default_nf(ah, chan);
+
+- return nf;
++ return ah->caldata->rawNoiseFloor;
+ }
+ EXPORT_SYMBOL(ath9k_hw_getchan_noise);
+--- a/drivers/net/wireless/ath/ath9k/main.c
++++ b/drivers/net/wireless/ath/ath9k/main.c
+@@ -184,11 +184,13 @@ static void ath_start_ani(struct ath_com
+ int ath_set_channel(struct ath_softc *sc, struct ieee80211_hw *hw,
+ struct ath9k_channel *hchan)
+ {
++ struct ath_wiphy *aphy = hw->priv;
+ struct ath_hw *ah = sc->sc_ah;
+ struct ath_common *common = ath9k_hw_common(ah);
+ struct ieee80211_conf *conf = &common->hw->conf;
+ bool fastcc = true, stopped;
+ struct ieee80211_channel *channel = hw->conf.channel;
++ struct ath9k_hw_cal_data *caldata = NULL;
+ int r;
+
+ if (sc->sc_flags & SC_OP_INVALID)
+@@ -221,6 +223,9 @@ int ath_set_channel(struct ath_softc *sc
+ if (!stopped || !(sc->sc_flags & SC_OP_OFFCHANNEL))
+ fastcc = false;
+
++ if (!(sc->sc_flags & SC_OP_OFFCHANNEL))
++ caldata = &aphy->caldata;
++
+ ath_print(common, ATH_DBG_CONFIG,
+ "(%u MHz) -> (%u MHz), conf_is_ht40: %d\n",
+ sc->sc_ah->curchan->channel,
+@@ -228,7 +233,7 @@ int ath_set_channel(struct ath_softc *sc
+
+ spin_lock_bh(&sc->sc_resetlock);
+
+- r = ath9k_hw_reset(ah, hchan, fastcc);
++ r = ath9k_hw_reset(ah, hchan, caldata, fastcc);
+ if (r) {
+ ath_print(common, ATH_DBG_FATAL,
+ "Unable to reset channel (%u MHz), "
+@@ -264,9 +269,10 @@ int ath_set_channel(struct ath_softc *sc
+ static void ath_paprd_activate(struct ath_softc *sc)
+ {
+ struct ath_hw *ah = sc->sc_ah;
++ struct ath9k_hw_cal_data *caldata = ah->caldata;
+ int chain;
+
+- if (!ah->curchan->paprd_done)
++ if (!caldata || !caldata->paprd_done)
+ return;
+
+ ath9k_ps_wakeup(sc);
+@@ -274,7 +280,7 @@ static void ath_paprd_activate(struct at
+ if (!(ah->caps.tx_chainmask & BIT(chain)))
+ continue;
+
+- ar9003_paprd_populate_single_table(ah, ah->curchan, chain);
++ ar9003_paprd_populate_single_table(ah, caldata, chain);
+ }
+
+ ar9003_paprd_enable(ah, true);
+@@ -292,6 +298,7 @@ void ath_paprd_calibrate(struct work_str
+ int band = hw->conf.channel->band;
+ struct ieee80211_supported_band *sband = &sc->sbands[band];
+ struct ath_tx_control txctl;
++ struct ath9k_hw_cal_data *caldata = ah->caldata;
+ int qnum, ftype;
+ int chain_ok = 0;
+ int chain;
+@@ -299,6 +306,9 @@ void ath_paprd_calibrate(struct work_str
+ int time_left;
+ int i;
+
++ if (!caldata)
++ return;
++
+ skb = alloc_skb(len, GFP_KERNEL);
+ if (!skb)
+ return;
+@@ -353,7 +363,7 @@ void ath_paprd_calibrate(struct work_str
+ if (!ar9003_paprd_is_done(ah))
+ break;
+
+- if (ar9003_paprd_create_curve(ah, ah->curchan, chain) != 0)
++ if (ar9003_paprd_create_curve(ah, caldata, chain) != 0)
+ break;
+
+ chain_ok = 1;
+@@ -361,7 +371,7 @@ void ath_paprd_calibrate(struct work_str
+ kfree_skb(skb);
+
+ if (chain_ok) {
+- ah->curchan->paprd_done = true;
++ caldata->paprd_done = true;
+ ath_paprd_activate(sc);
+ }
+
+@@ -470,8 +480,8 @@ set_timer:
+ cal_interval = min(cal_interval, (u32)short_cal_interval);
+
+ mod_timer(&common->ani.timer, jiffies + msecs_to_jiffies(cal_interval));
+- if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_PAPRD) {
+- if (!sc->sc_ah->curchan->paprd_done)
++ if ((sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_PAPRD) && ah->caldata) {
++ if (!ah->caldata->paprd_done)
+ ieee80211_queue_work(sc->hw, &sc->paprd_work);
+ else
+ ath_paprd_activate(sc);
+@@ -829,7 +839,7 @@ void ath_radio_enable(struct ath_softc *
+ ah->curchan = ath_get_curchannel(sc, sc->hw);
+
+ spin_lock_bh(&sc->sc_resetlock);
+- r = ath9k_hw_reset(ah, ah->curchan, false);
++ r = ath9k_hw_reset(ah, ah->curchan, ah->caldata, false);
+ if (r) {
+ ath_print(common, ATH_DBG_FATAL,
+ "Unable to reset channel (%u MHz), "
+@@ -889,7 +899,7 @@ void ath_radio_disable(struct ath_softc
+ ah->curchan = ath_get_curchannel(sc, hw);
+
+ spin_lock_bh(&sc->sc_resetlock);
+- r = ath9k_hw_reset(ah, ah->curchan, false);
++ r = ath9k_hw_reset(ah, ah->curchan, ah->caldata, false);
+ if (r) {
+ ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_FATAL,
+ "Unable to reset channel (%u MHz), "
+@@ -922,7 +932,7 @@ int ath_reset(struct ath_softc *sc, bool
+ ath_flushrecv(sc);
+
+ spin_lock_bh(&sc->sc_resetlock);
+- r = ath9k_hw_reset(ah, sc->sc_ah->curchan, false);
++ r = ath9k_hw_reset(ah, sc->sc_ah->curchan, ah->caldata, false);
+ if (r)
+ ath_print(common, ATH_DBG_FATAL,
+ "Unable to reset hardware; reset status %d\n", r);
+@@ -1097,7 +1107,7 @@ static int ath9k_start(struct ieee80211_
+ * and then setup of the interrupt mask.
+ */
+ spin_lock_bh(&sc->sc_resetlock);
+- r = ath9k_hw_reset(ah, init_channel, false);
++ r = ath9k_hw_reset(ah, init_channel, ah->caldata, false);
+ if (r) {
+ ath_print(common, ATH_DBG_FATAL,
+ "Unable to reset hardware; reset status %d "
+--- a/drivers/net/wireless/ath/ath9k/ar9003_paprd.c
++++ b/drivers/net/wireless/ath/ath9k/ar9003_paprd.c
+@@ -577,10 +577,11 @@ static bool create_pa_curve(u32 *data_L,
+ }
+
+ void ar9003_paprd_populate_single_table(struct ath_hw *ah,
+- struct ath9k_channel *chan, int chain)
++ struct ath9k_hw_cal_data *caldata,
++ int chain)
+ {
+- u32 *paprd_table_val = chan->pa_table[chain];
+- u32 small_signal_gain = chan->small_signal_gain[chain];
++ u32 *paprd_table_val = caldata->pa_table[chain];
++ u32 small_signal_gain = caldata->small_signal_gain[chain];
+ u32 training_power;
+ u32 reg = 0;
+ int i;
+@@ -654,17 +655,17 @@ int ar9003_paprd_setup_gain_table(struct
+ }
+ EXPORT_SYMBOL(ar9003_paprd_setup_gain_table);
+
+-int ar9003_paprd_create_curve(struct ath_hw *ah, struct ath9k_channel *chan,
+- int chain)
++int ar9003_paprd_create_curve(struct ath_hw *ah,
++ struct ath9k_hw_cal_data *caldata, int chain)
+ {
+- u16 *small_signal_gain = &chan->small_signal_gain[chain];
+- u32 *pa_table = chan->pa_table[chain];
++ u16 *small_signal_gain = &caldata->small_signal_gain[chain];
++ u32 *pa_table = caldata->pa_table[chain];
+ u32 *data_L, *data_U;
+ int i, status = 0;
+ u32 *buf;
+ u32 reg;
+
+- memset(chan->pa_table[chain], 0, sizeof(chan->pa_table[chain]));
++ memset(caldata->pa_table[chain], 0, sizeof(caldata->pa_table[chain]));
+
+ buf = kmalloc(2 * 48 * sizeof(u32), GFP_ATOMIC);
+ if (!buf)
+--- a/drivers/net/wireless/ath/ath9k/hw.c
++++ b/drivers/net/wireless/ath/ath9k/hw.c
+@@ -621,7 +621,6 @@ static int __ath9k_hw_init(struct ath_hw
+ else
+ ah->tx_trig_level = (AR_FTRIG_512B >> AR_FTRIG_S);
+
+- ath9k_init_nfcal_hist_buffer(ah);
+ ah->bb_watchdog_timeout_ms = 25;
+
+ common->state = ATH_HW_INITIALIZED;
+@@ -1194,9 +1193,6 @@ static bool ath9k_hw_channel_change(stru
+
+ ath9k_hw_spur_mitigate_freq(ah, chan);
+
+- if (!chan->oneTimeCalsDone)
+- chan->oneTimeCalsDone = true;
+-
+ return true;
+ }
+
+@@ -1229,7 +1225,7 @@ bool ath9k_hw_check_alive(struct ath_hw
+ EXPORT_SYMBOL(ath9k_hw_check_alive);
+
+ int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan,
+- bool bChannelChange)
++ struct ath9k_hw_cal_data *caldata, bool bChannelChange)
+ {
+ struct ath_common *common = ath9k_hw_common(ah);
+ u32 saveLedState;
+@@ -1254,9 +1250,19 @@ int ath9k_hw_reset(struct ath_hw *ah, st
+ if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE))
+ return -EIO;
+
+- if (curchan && !ah->chip_fullsleep)
++ if (curchan && !ah->chip_fullsleep && ah->caldata)
+ ath9k_hw_getnf(ah, curchan);
+
++ ah->caldata = caldata;
++ if (caldata &&
++ (chan->channel != caldata->channel ||
++ (chan->channelFlags & ~CHANNEL_CW_INT) !=
++ (caldata->channelFlags & ~CHANNEL_CW_INT))) {
++ /* Operating channel changed, reset channel calibration data */
++ memset(caldata, 0, sizeof(*caldata));
++ ath9k_init_nfcal_hist_buffer(ah, chan);
++ }
++
+ if (bChannelChange &&
+ (ah->chip_fullsleep != true) &&
+ (ah->curchan != NULL) &&
+--- a/drivers/net/wireless/ath/ath9k/ar9002_calib.c
++++ b/drivers/net/wireless/ath/ath9k/ar9002_calib.c
+@@ -63,6 +63,7 @@ static bool ar9002_hw_per_calibration(st
+ u8 rxchainmask,
+ struct ath9k_cal_list *currCal)
+ {
++ struct ath9k_hw_cal_data *caldata = ah->caldata;
+ bool iscaldone = false;
+
+ if (currCal->calState == CAL_RUNNING) {
+@@ -81,14 +82,14 @@ static bool ar9002_hw_per_calibration(st
+ }
+
+ currCal->calData->calPostProc(ah, numChains);
+- ichan->CalValid |= currCal->calData->calType;
++ caldata->CalValid |= currCal->calData->calType;
+ currCal->calState = CAL_DONE;
+ iscaldone = true;
+ } else {
+ ar9002_hw_setup_calibration(ah, currCal);
+ }
+ }
+- } else if (!(ichan->CalValid & currCal->calData->calType)) {
++ } else if (!(caldata->CalValid & currCal->calData->calType)) {
+ ath9k_hw_reset_calibration(ah, currCal);
+ }
+
+@@ -901,7 +902,8 @@ static bool ar9002_hw_init_cal(struct at
+ ath9k_hw_reset_calibration(ah, ah->cal_list_curr);
+ }
+
+- chan->CalValid = 0;
++ if (ah->caldata)
++ ah->caldata->CalValid = 0;
+
+ return true;
+ }
+--- a/drivers/net/wireless/ath/ath9k/ar9003_calib.c
++++ b/drivers/net/wireless/ath/ath9k/ar9003_calib.c
+@@ -68,6 +68,7 @@ static bool ar9003_hw_per_calibration(st
+ u8 rxchainmask,
+ struct ath9k_cal_list *currCal)
+ {
++ struct ath9k_hw_cal_data *caldata = ah->caldata;
+ /* Cal is assumed not done until explicitly set below */
+ bool iscaldone = false;
+
+@@ -95,7 +96,7 @@ static bool ar9003_hw_per_calibration(st
+ currCal->calData->calPostProc(ah, numChains);
+
+ /* Calibration has finished. */
+- ichan->CalValid |= currCal->calData->calType;
++ caldata->CalValid |= currCal->calData->calType;
+ currCal->calState = CAL_DONE;
+ iscaldone = true;
+ } else {
+@@ -106,7 +107,7 @@ static bool ar9003_hw_per_calibration(st
+ ar9003_hw_setup_calibration(ah, currCal);
+ }
+ }
+- } else if (!(ichan->CalValid & currCal->calData->calType)) {
++ } else if (!(caldata->CalValid & currCal->calData->calType)) {
+ /* If current cal is marked invalid in channel, kick it off */
+ ath9k_hw_reset_calibration(ah, currCal);
+ }
+@@ -785,7 +786,8 @@ static bool ar9003_hw_init_cal(struct at
+ if (ah->cal_list_curr)
+ ath9k_hw_reset_calibration(ah, ah->cal_list_curr);
+
+- chan->CalValid = 0;
++ if (ah->caldata)
++ ah->caldata->CalValid = 0;
+
+ return true;
+ }
+--- a/drivers/net/wireless/ath/ath9k/htc_drv_main.c
++++ b/drivers/net/wireless/ath/ath9k/htc_drv_main.c
+@@ -125,6 +125,7 @@ static int ath9k_htc_set_channel(struct
+ struct ieee80211_conf *conf = &common->hw->conf;
+ bool fastcc = true;
+ struct ieee80211_channel *channel = hw->conf.channel;
++ struct ath9k_hw_cal_data *caldata;
+ enum htc_phymode mode;
+ __be16 htc_mode;
+ u8 cmd_rsp;
+@@ -149,7 +150,8 @@ static int ath9k_htc_set_channel(struct
+ priv->ah->curchan->channel,
+ channel->center_freq, conf_is_ht(conf), conf_is_ht40(conf));
+
+- ret = ath9k_hw_reset(ah, hchan, fastcc);
++ caldata = &priv->caldata[channel->hw_value];
++ ret = ath9k_hw_reset(ah, hchan, caldata, fastcc);
+ if (ret) {
+ ath_print(common, ATH_DBG_FATAL,
+ "Unable to reset channel (%u Mhz) "
+@@ -1028,7 +1030,7 @@ static void ath9k_htc_radio_enable(struc
+ ah->curchan = ath9k_cmn_get_curchannel(hw, ah);
+
+ /* Reset the HW */
+- ret = ath9k_hw_reset(ah, ah->curchan, false);
++ ret = ath9k_hw_reset(ah, ah->curchan, ah->caldata, false);
+ if (ret) {
+ ath_print(common, ATH_DBG_FATAL,
+ "Unable to reset hardware; reset status %d "
+@@ -1091,7 +1093,7 @@ static void ath9k_htc_radio_disable(stru
+ ah->curchan = ath9k_cmn_get_curchannel(hw, ah);
+
+ /* Reset the HW */
+- ret = ath9k_hw_reset(ah, ah->curchan, false);
++ ret = ath9k_hw_reset(ah, ah->curchan, ah->caldata, false);
+ if (ret) {
+ ath_print(common, ATH_DBG_FATAL,
+ "Unable to reset hardware; reset status %d "
+@@ -1179,7 +1181,7 @@ static int ath9k_htc_start(struct ieee80
+ ath9k_hw_configpcipowersave(ah, 0, 0);
+
+ ath9k_hw_htc_resetinit(ah);
+- ret = ath9k_hw_reset(ah, init_channel, false);
++ ret = ath9k_hw_reset(ah, init_channel, ah->caldata, false);
+ if (ret) {
+ ath_print(common, ATH_DBG_FATAL,
+ "Unable to reset hardware; reset status %d "
+--- a/drivers/net/wireless/ath/ath9k/xmit.c
++++ b/drivers/net/wireless/ath/ath9k/xmit.c
+@@ -1181,7 +1181,7 @@ void ath_drain_all_txq(struct ath_softc
+ "Failed to stop TX DMA. Resetting hardware!\n");
+
+ spin_lock_bh(&sc->sc_resetlock);
+- r = ath9k_hw_reset(ah, sc->sc_ah->curchan, false);
++ r = ath9k_hw_reset(ah, sc->sc_ah->curchan, ah->caldata, false);
+ if (r)
+ ath_print(common, ATH_DBG_FATAL,
+ "Unable to reset hardware; reset status %d\n",
+--- a/drivers/net/wireless/ath/ath9k/ath9k.h
++++ b/drivers/net/wireless/ath/ath9k/ath9k.h
+@@ -611,6 +611,7 @@ struct ath_softc {
+ struct ath_wiphy {
+ struct ath_softc *sc; /* shared for all virtual wiphys */
+ struct ieee80211_hw *hw;
++ struct ath9k_hw_cal_data caldata;
+ enum ath_wiphy_state {
+ ATH_WIPHY_INACTIVE,
+ ATH_WIPHY_ACTIVE,
+--- a/drivers/net/wireless/ath/ath9k/calib.h
++++ b/drivers/net/wireless/ath/ath9k/calib.h
+@@ -112,7 +112,8 @@ void ath9k_hw_start_nfcal(struct ath_hw
+ void ath9k_hw_loadnf(struct ath_hw *ah, struct ath9k_channel *chan);
+ int16_t ath9k_hw_getnf(struct ath_hw *ah,
+ struct ath9k_channel *chan);
+-void ath9k_init_nfcal_hist_buffer(struct ath_hw *ah);
++void ath9k_init_nfcal_hist_buffer(struct ath_hw *ah,
++ struct ath9k_channel *chan);
+ s16 ath9k_hw_getchan_noise(struct ath_hw *ah, struct ath9k_channel *chan);
+ void ath9k_hw_reset_calibration(struct ath_hw *ah,
+ struct ath9k_cal_list *currCal);
+--- a/drivers/net/wireless/ath/ath9k/htc.h
++++ b/drivers/net/wireless/ath/ath9k/htc.h
+@@ -353,6 +353,8 @@ struct ath9k_htc_priv {
+ u16 seq_no;
+ u32 bmiss_cnt;
+
++ struct ath9k_hw_cal_data caldata[38];
++
+ spinlock_t beacon_lock;
+
+ bool tx_queues_stop;
--- /dev/null
+--- a/drivers/net/wireless/ath/ath9k/hw.h
++++ b/drivers/net/wireless/ath/ath9k/hw.h
+@@ -354,6 +354,7 @@ struct ath9k_hw_cal_data {
+ int8_t qCoff;
+ int16_t rawNoiseFloor;
+ bool paprd_done;
++ bool nfcal_pending;
+ u16 small_signal_gain[AR9300_MAX_CHAINS];
+ u32 pa_table[AR9300_MAX_CHAINS][PAPRD_TABLE_SZ];
+ struct ath9k_nfcal_hist nfCalHist[NUM_NF_READINGS];
+--- a/drivers/net/wireless/ath/ath9k/calib.c
++++ b/drivers/net/wireless/ath/ath9k/calib.c
+@@ -156,6 +156,9 @@ EXPORT_SYMBOL(ath9k_hw_reset_calvalid);
+
+ void ath9k_hw_start_nfcal(struct ath_hw *ah)
+ {
++ if (ah->caldata)
++ ah->caldata->nfcal_pending = true;
++
+ REG_SET_BIT(ah, AR_PHY_AGC_CONTROL,
+ AR_PHY_AGC_CONTROL_ENABLE_NF);
+ REG_SET_BIT(ah, AR_PHY_AGC_CONTROL,
+@@ -282,8 +285,7 @@ static void ath9k_hw_nf_sanitize(struct
+ }
+ }
+
+-int16_t ath9k_hw_getnf(struct ath_hw *ah,
+- struct ath9k_channel *chan)
++bool ath9k_hw_getnf(struct ath_hw *ah, struct ath9k_channel *chan)
+ {
+ struct ath_common *common = ath9k_hw_common(ah);
+ int16_t nf, nfThresh;
+@@ -293,7 +295,7 @@ int16_t ath9k_hw_getnf(struct ath_hw *ah
+ struct ath9k_hw_cal_data *caldata = ah->caldata;
+
+ if (!caldata)
+- return ath9k_hw_get_default_nf(ah, chan);
++ return false;
+
+ chan->channelFlags &= (~CHANNEL_CW_INT);
+ if (REG_READ(ah, AR_PHY_AGC_CONTROL) & AR_PHY_AGC_CONTROL_NF) {
+@@ -301,7 +303,7 @@ int16_t ath9k_hw_getnf(struct ath_hw *ah
+ "NF did not complete in calibration window\n");
+ nf = 0;
+ caldata->rawNoiseFloor = nf;
+- return caldata->rawNoiseFloor;
++ return false;
+ } else {
+ ath9k_hw_do_getnf(ah, nfarray);
+ ath9k_hw_nf_sanitize(ah, nfarray);
+@@ -317,11 +319,10 @@ int16_t ath9k_hw_getnf(struct ath_hw *ah
+ }
+
+ h = caldata->nfCalHist;
+-
++ caldata->nfcal_pending = false;
+ ath9k_hw_update_nfcal_hist_buffer(h, nfarray);
+ caldata->rawNoiseFloor = h[0].privNF;
+-
+- return ah->caldata->rawNoiseFloor;
++ return true;
+ }
+
+ void ath9k_init_nfcal_hist_buffer(struct ath_hw *ah,
+--- a/drivers/net/wireless/ath/ath9k/ar9002_calib.c
++++ b/drivers/net/wireless/ath/ath9k/ar9002_calib.c
+@@ -687,8 +687,13 @@ static bool ar9002_hw_calibrate(struct a
+ {
+ bool iscaldone = true;
+ struct ath9k_cal_list *currCal = ah->cal_list_curr;
++ bool nfcal, nfcal_pending = false;
+
+- if (currCal &&
++ nfcal = !!(REG_READ(ah, AR_PHY_AGC_CONTROL) & AR_PHY_AGC_CONTROL_NF);
++ if (ah->caldata)
++ nfcal_pending = ah->caldata->nfcal_pending;
++
++ if (currCal && !nfcal &&
+ (currCal->calState == CAL_RUNNING ||
+ currCal->calState == CAL_WAITING)) {
+ iscaldone = ar9002_hw_per_calibration(ah, chan,
+@@ -704,7 +709,7 @@ static bool ar9002_hw_calibrate(struct a
+ }
+
+ /* Do NF cal only at longer intervals */
+- if (longcal) {
++ if (longcal || nfcal_pending) {
+ /* Do periodic PAOffset Cal */
+ ar9002_hw_pa_cal(ah, false);
+ ar9002_hw_olc_temp_compensation(ah);
+@@ -713,16 +718,18 @@ static bool ar9002_hw_calibrate(struct a
+ * Get the value from the previous NF cal and update
+ * history buffer.
+ */
+- ath9k_hw_getnf(ah, chan);
+-
+- /*
+- * Load the NF from history buffer of the current channel.
+- * NF is slow time-variant, so it is OK to use a historical
+- * value.
+- */
+- ath9k_hw_loadnf(ah, ah->curchan);
++ if (ath9k_hw_getnf(ah, chan)) {
++ /*
++ * Load the NF from history buffer of the current
++ * channel.
++ * NF is slow time-variant, so it is OK to use a
++ * historical value.
++ */
++ ath9k_hw_loadnf(ah, ah->curchan);
++ }
+
+- ath9k_hw_start_nfcal(ah);
++ if (longcal)
++ ath9k_hw_start_nfcal(ah);
+ }
+
+ return iscaldone;
+@@ -873,6 +880,9 @@ static bool ar9002_hw_init_cal(struct at
+ REG_WRITE(ah, AR_PHY_AGC_CONTROL,
+ REG_READ(ah, AR_PHY_AGC_CONTROL) | AR_PHY_AGC_CONTROL_NF);
+
++ if (ah->caldata)
++ ah->caldata->nfcal_pending = true;
++
+ ah->cal_list = ah->cal_list_last = ah->cal_list_curr = NULL;
+
+ /* Enable IQ, ADC Gain and ADC DC offset CALs */
+--- a/drivers/net/wireless/ath/ath9k/calib.h
++++ b/drivers/net/wireless/ath/ath9k/calib.h
+@@ -110,8 +110,7 @@ struct ath9k_pacal_info{
+ bool ath9k_hw_reset_calvalid(struct ath_hw *ah);
+ void ath9k_hw_start_nfcal(struct ath_hw *ah);
+ void ath9k_hw_loadnf(struct ath_hw *ah, struct ath9k_channel *chan);
+-int16_t ath9k_hw_getnf(struct ath_hw *ah,
+- struct ath9k_channel *chan);
++bool ath9k_hw_getnf(struct ath_hw *ah, struct ath9k_channel *chan);
+ void ath9k_init_nfcal_hist_buffer(struct ath_hw *ah,
+ struct ath9k_channel *chan);
+ s16 ath9k_hw_getchan_noise(struct ath_hw *ah, struct ath9k_channel *chan);
projects / openwrt / staging / chunkeey.git / commitdiff