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ath10k: enable adaptive CCA

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European Union has made it mandatory that all devices working in 2.4 GHz
has to adhere to the ETSI specification (ETSI EN 300 328 V1.9.1)
beginnig this year. The standard basically speaks about interferences
in 2.4Ghz band.
For example, when 802.11 device detects interference, TX must be stopped
as long as interference is present.

Adaptive CCA is a feature, when enabled the device learns from the
environment and configures CCA levels adaptively. This will improve
detecting interferences and the device can stop trasmissions till the
interference is present eventually leading to good performances in
varying interference conditions.

The patch includes code for enabling adaptive CCA for 10.2.4 firmware on
QCA988X.

Signed-off-by: Maharaja <c_mkenna@qti.qualcomm.com>
Signed-off-by: Manikanta Pubbisetty <c_mpubbi@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
This commit is contained in:
Maharaja
2015-10-21 11:49:18 +03:00
committed by Kalle Valo
parent 845da6e58e
commit 62f77f095c
6 changed files with 85 additions and 0 deletions
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12
drivers/net/wireless/ath/ath10k/mac.c
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@@ -3905,6 +3905,18 @@ static int ath10k_start(struct ieee80211_hw *hw)
goto err_core_stop;
}
if (test_bit(ATH10K_FW_FEATURE_SUPPORTS_ADAPTIVE_CCA,
ar->fw_features)) {
ret = ath10k_wmi_pdev_enable_adaptive_cca(ar, 1,
WMI_CCA_DETECT_LEVEL_AUTO,
WMI_CCA_DETECT_MARGIN_AUTO);
if (ret) {
ath10k_warn(ar, "failed to enable adaptive cca: %d\n",
ret);
goto err_core_stop;
}
}
ret = ath10k_wmi_pdev_set_param(ar,
ar->wmi.pdev_param->ani_enable, 1);
if (ret) {