[PATCH] wcn36xx: Fix dynamic power saving
From: Loic Poulain <hidden>
Date: 2017-12-08 16:34:06
Also in:
linux-arm-msm
Subsystem:
atheros ath generic utilities, qualcomm wcn36xx wireless driver, the rest · Maintainers:
Jeff Johnson, Loic Poulain, Linus Torvalds
Since driver does not report hardware dynamic power saving cap, this is up to the mac80211 to manage power saving timeout and state machine, using the ieee80211 config callback to report PS changes. This patch enables/disables PS mode according to the new configuration. Remove old behaviour enabling PS mode in a static way, this make the device unusable when power save is enabled since device is forced to PS regardless RX/TX traffic. Signed-off-by: Loic Poulain <redacted> --- drivers/net/wireless/ath/wcn36xx/main.c | 23 ++++++++++++----------- 1 file changed, 12 insertions(+), 11 deletions(-)
diff --git a/drivers/net/wireless/ath/wcn36xx/main.c b/drivers/net/wireless/ath/wcn36xx/main.c
index f0b4d43..436b8ea 100644
--- a/drivers/net/wireless/ath/wcn36xx/main.c
+++ b/drivers/net/wireless/ath/wcn36xx/main.c@@ -384,6 +384,18 @@ static int wcn36xx_config(struct ieee80211_hw *hw, u32 changed) } } + if (changed & IEEE80211_CONF_CHANGE_PS) { + list_for_each_entry(tmp, &wcn->vif_list, list) { + vif = wcn36xx_priv_to_vif(tmp); + if (hw->conf.flags & IEEE80211_CONF_PS) { + if (vif->bss_conf.ps) /* ps allowed ? */ + wcn36xx_pmc_enter_bmps_state(wcn, vif); + } else { + wcn36xx_pmc_exit_bmps_state(wcn, vif); + } + } + } + mutex_unlock(&wcn->conf_mutex); return 0;
@@ -747,17 +759,6 @@ static void wcn36xx_bss_info_changed(struct ieee80211_hw *hw, vif_priv->dtim_period = bss_conf->dtim_period; } - if (changed & BSS_CHANGED_PS) { - wcn36xx_dbg(WCN36XX_DBG_MAC, - "mac bss PS set %d\n", - bss_conf->ps); - if (bss_conf->ps) { - wcn36xx_pmc_enter_bmps_state(wcn, vif); - } else { - wcn36xx_pmc_exit_bmps_state(wcn, vif); - } - } - if (changed & BSS_CHANGED_BSSID) { wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed_bssid %pM\n", bss_conf->bssid);
--
2.7.4