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Commit a126ff51 authored by Rajkumar Manoharan's avatar Rajkumar Manoharan Committed by John W. Linville
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ath9k_hw: Do fast channel change based on reusable calibration results 



Support the fast channel change across band switch only when there
are available of reusable cabliration results. And also observed that
doing agc control calibration on fastcc, sometimes causing calibration
timeout. Hence changing agc control to be run only on full chip reset.

Signed-off-by: default avatarRajkumar Manoharan <rmanohar@qca.qualcomm.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 324c74ad

drivers/net/wireless/ath/ath9k/ar9003_calib.c

+1 −2
Original line number Diff line number Diff line
@@ -1008,8 +1008,7 @@ static bool ar9003_hw_init_cal(struct ath_hw *ah, 
	REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_EN);



skip_tx_iqcal:



	if (run_agc_cal) {

	if (run_agc_cal || !(ah->ah_flags & AH_FASTCC)) {

		/* Calibrate the AGC */

		REG_WRITE(ah, AR_PHY_AGC_CONTROL,

			  REG_READ(ah, AR_PHY_AGC_CONTROL) |

drivers/net/wireless/ath/ath9k/hw.c

+12 −2
Original line number Diff line number Diff line
@@ -1445,6 +1445,7 @@ static bool ath9k_hw_channel_change(struct ath_hw *ah, 
	ath9k_hw_spur_mitigate_freq(ah, chan);



	if (edma && (band_switch || mode_diff)) {

		ah->ah_flags |= AH_FASTCC;

		if (band_switch || ini_reloaded)

			ah->eep_ops->set_board_values(ah, chan);
@@ -1452,6 +1453,7 @@ static bool ath9k_hw_channel_change(struct ath_hw *ah, 


		if (band_switch || ini_reloaded)

			ath9k_hw_init_cal(ah, chan);

		ah->ah_flags &= ~AH_FASTCC;

	}



	return true;
@@ -1509,6 +1511,7 @@ int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan, 
	u32 macStaId1;

	u64 tsf = 0;

	int i, r;

	bool allow_fbs = false;



	if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE))

		return -EIO;
@@ -1530,12 +1533,19 @@ int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan, 
	if (AR_SREV_9280(ah) && common->bus_ops->ath_bus_type == ATH_PCI)

		bChannelChange = false;



	if (caldata &&

	    caldata->done_txiqcal_once &&

	    caldata->done_txclcal_once &&

	    caldata->rtt_hist.num_readings)

		allow_fbs = true;



	if (bChannelChange &&

	    (ah->chip_fullsleep != true) &&

	    (ah->curchan != NULL) &&

	    (chan->channel != ah->curchan->channel) &&

	    (allow_fbs ||

	     ((chan->channelFlags & CHANNEL_ALL) ==

	     (ah->curchan->channelFlags & CHANNEL_ALL))) {

	      (ah->curchan->channelFlags & CHANNEL_ALL)))) {

		if (ath9k_hw_channel_change(ah, chan)) {

			ath9k_hw_loadnf(ah, ah->curchan);

			ath9k_hw_start_nfcal(ah, true);

drivers/net/wireless/ath/ath9k/hw.h

+1 −0
Original line number Diff line number Diff line
@@ -652,6 +652,7 @@ enum ath_cal_list { 
/* ah_flags */

#define AH_USE_EEPROM   0x1

#define AH_UNPLUGGED    0x2 /* The card has been physically removed. */

#define AH_FASTCC       0x4



struct ath_hw {

	struct ath_ops reg_ops;