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ath10k: fix idle power consumption

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mac80211 can update vif powersave state while
disconnected. Firmware doesn't behave nicely and
consumes more power than necessary if PS is
disabled on a non-started vdev. Hence
force-enable PS for non-running vdevs.

This reduces power drain on QCA61X4 from 88mA to
36mA when interface is up and not associated.
QCA988X wasn't measured.

Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
This commit is contained in:
Janusz Dziedzic 2015-05-18 09:38:17 +00:00 committed by Kalle Valo
parent 76d870ed09
commit 917826be9f
1 changed files with 8 additions and 1 deletions
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9
drivers/net/wireless/ath/ath10k/mac.c
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@ -1738,7 +1738,14 @@ static int ath10k_mac_vif_setup_ps(struct ath10k_vif *arvif)
enable_ps = false;
}
if (enable_ps) {
if (!arvif->is_started) {
/* mac80211 can update vif powersave state while disconnected.
* Firmware doesn't behave nicely and consumes more power than
* necessary if PS is disabled on a non-started vdev. Hence
* force-enable PS for non-running vdevs.
*/
psmode = WMI_STA_PS_MODE_ENABLED;
} else if (enable_ps) {
psmode = WMI_STA_PS_MODE_ENABLED;
param = WMI_STA_PS_PARAM_INACTIVITY_TIME;