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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>
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1 changed files with 8 additions and 24 deletions
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@ -1871,31 +1871,15 @@ ath5k_hw_phy_calibrate(struct ath5k_hw *ah,
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ret = 0;
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}
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/* On full calibration do an AGC calibration and
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* request a PAPD probe for gainf calibration if
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* needed */
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if (ah->ah_cal_mask & AR5K_CALIBRATION_FULL) {
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AR5K_REG_ENABLE_BITS(ah, AR5K_PHY_AGCCTL,
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AR5K_PHY_AGCCTL_CAL);
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ret = ath5k_hw_register_timeout(ah, AR5K_PHY_AGCCTL,
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AR5K_PHY_AGCCTL_CAL | AR5K_PHY_AGCCTL_NF,
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0, false);
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if (ret) {
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ATH5K_ERR(ah,
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"gain calibration timeout (%uMHz)\n",
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channel->center_freq);
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}
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if ((ah->ah_radio == AR5K_RF5111 ||
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ah->ah_radio == AR5K_RF5112)
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&& (channel->hw_value != AR5K_MODE_11B))
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/* On full calibration request a PAPD probe for
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* gainf calibration if needed */
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if ((ah->ah_cal_mask & AR5K_CALIBRATION_FULL) &&
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(ah->ah_radio == AR5K_RF5111 ||
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ah->ah_radio == AR5K_RF5112) &&
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channel->hw_value != AR5K_MODE_11B)
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ath5k_hw_request_rfgain_probe(ah);
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}
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/* Update noise floor
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* XXX: Only do this after AGC calibration */
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/* Update noise floor */
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if (!(ah->ah_cal_mask & AR5K_CALIBRATION_NF))
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ath5k_hw_update_noise_floor(ah);
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