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ath9k_hw: Do fast channel change based on reusable calibration results

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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: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Rajkumar Manoharan 2011-10-13 11:00:42 +05:30 committed by John W. Linville
parent 324c74ad64
commit a126ff511b
3 changed files with 14 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/net/wireless/ath/ath9k/ar9003_calib.c
View File

@ -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) |

14
drivers/net/wireless/ath/ath9k/hw.c
View File

@ -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) &&
((chan->channelFlags & CHANNEL_ALL) ==
(ah->curchan->channelFlags & CHANNEL_ALL))) {
(allow_fbs ||
((chan->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);

1
drivers/net/wireless/ath/ath9k/hw.h
View File

@ -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;