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authorFelix Fietkau <nbd@openwrt.org>2012-03-06 11:06:38 +0100
committerJohn W. Linville <linville@tuxdriver.com>2012-03-06 15:16:18 -0500
commit5c17ddc4a047c59638c7eb8537aa887a1ddb9b0b (patch)
tree47633f4289f30043be66dcb2b868b81208fac627 /drivers/net/wireless/ath/ath5k
parent62e2c102cc1d2600381410c089ca9a37359577d2 (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.c34
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);