diff options
| author | Felix Fietkau <nbd@openwrt.org> | 2012-03-06 11:06:38 +0100 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2012-03-06 15:16:18 -0500 |
| commit | 5c17ddc4a047c59638c7eb8537aa887a1ddb9b0b (patch) | |
| tree | 47633f4289f30043be66dcb2b868b81208fac627 /drivers/net/wireless/ath/ath5k | |
| parent | 62e2c102cc1d2600381410c089ca9a37359577d2 (diff) | |
ath5k: do not re-run AGC calibration periodically
All other Atheros drivers run the AGC gain calibration and DC offset
calibration only after reset. Running them periodically has caused stability
issues on some (primarily AR2315/2413/5413/5414 based) devices, leading to
messages such as:
ath5k phy0: gain calibration timeout (2462MHz)
ath5k phy0: calibration of channel 11 failed
Related bug reports:
https://dev.openwrt.org/ticket/10574
https://bugzilla.redhat.com/show_bug.cgi?id=795141
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Acked-by: Nick Kossifidis <mickflemm@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ath/ath5k')
| -rw-r--r-- | drivers/net/wireless/ath/ath5k/phy.c | 34 |
1 files changed, 9 insertions, 25 deletions
diff --git a/drivers/net/wireless/ath/ath5k/phy.c b/drivers/net/wireless/ath/ath5k/phy.c index e1f8613426a9..3a2845489a1b 100644 --- a/drivers/net/wireless/ath/ath5k/phy.c +++ b/drivers/net/wireless/ath/ath5k/phy.c @@ -1871,31 +1871,15 @@ ath5k_hw_phy_calibrate(struct ath5k_hw *ah, ret = 0; } - /* On full calibration do an AGC calibration and - * request a PAPD probe for gainf calibration if - * needed */ - if (ah->ah_cal_mask & AR5K_CALIBRATION_FULL) { - - AR5K_REG_ENABLE_BITS(ah, AR5K_PHY_AGCCTL, - AR5K_PHY_AGCCTL_CAL); - - ret = ath5k_hw_register_timeout(ah, AR5K_PHY_AGCCTL, - AR5K_PHY_AGCCTL_CAL | AR5K_PHY_AGCCTL_NF, - 0, false); - if (ret) { - ATH5K_ERR(ah, - "gain calibration timeout (%uMHz)\n", - channel->center_freq); - } - - if ((ah->ah_radio == AR5K_RF5111 || - ah->ah_radio == AR5K_RF5112) - && (channel->hw_value != AR5K_MODE_11B)) - ath5k_hw_request_rfgain_probe(ah); - } - - /* Update noise floor - * XXX: Only do this after AGC calibration */ + /* On full calibration request a PAPD probe for + * gainf calibration if needed */ + if ((ah->ah_cal_mask & AR5K_CALIBRATION_FULL) && + (ah->ah_radio == AR5K_RF5111 || + ah->ah_radio == AR5K_RF5112) && + channel->hw_value != AR5K_MODE_11B) + ath5k_hw_request_rfgain_probe(ah); + + /* Update noise floor */ if (!(ah->ah_cal_mask & AR5K_CALIBRATION_NF)) ath5k_hw_update_noise_floor(ah); |