redonkable/alistair23-linux
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ath9k: disable radio when all devices are marked idle

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This uses the new configuration changes indicated up by
mac80211 when all interfaces are marked idle. We need to do
a little more work as we have our own set of virtual
wiphys within ath9k.

Only when all virtual wiphys are inactive do we allow an idle
state change for a wiphy to trigger disabling the radio.

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Luis R. Rodriguez 2009-07-14 20:22:53 -04:00 committed by John W. Linville
parent 709ade9eb8
commit 64839170be
3 changed files with 42 additions and 0 deletions
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1
drivers/net/wireless/ath/ath9k/ath9k.h
View file

@ -691,6 +691,7 @@ void ath9k_wiphy_pause_all_forced(struct ath_softc *sc,
struct ath_wiphy *selected);
bool ath9k_wiphy_scanning(struct ath_softc *sc);
void ath9k_wiphy_work(struct work_struct *work);
bool ath9k_all_wiphys_idle(struct ath_softc *sc);
void ath9k_iowrite32(struct ath_hw *ah, u32 reg_offset, u32 val);
unsigned int ath9k_ioread32(struct ath_hw *ah, u32 reg_offset);

24
drivers/net/wireless/ath/ath9k/main.c
View file

@ -2260,9 +2260,28 @@ static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
struct ath_softc *sc = aphy->sc;
struct ieee80211_conf *conf = &hw->conf;
struct ath_hw *ah = sc->sc_ah;
bool all_wiphys_idle = false, disable_radio = false;
mutex_lock(&sc->mutex);
/* Leave this as the first check */
if (changed & IEEE80211_CONF_CHANGE_IDLE) {
spin_lock_bh(&sc->wiphy_lock);
all_wiphys_idle = ath9k_all_wiphys_idle(sc);
spin_unlock_bh(&sc->wiphy_lock);
if (conf->flags & IEEE80211_CONF_IDLE){
if (all_wiphys_idle)
disable_radio = true;
}
else if (all_wiphys_idle) {
ath_radio_enable(sc);
DPRINTF(sc, ATH_DBG_CONFIG,
"not-idle: enabling radio\n");
}
}
if (changed & IEEE80211_CONF_CHANGE_PS) {
if (conf->flags & IEEE80211_CONF_PS) {
if (!(ah->caps.hw_caps &
@ -2330,6 +2349,11 @@ skip_chan_change:
if (changed & IEEE80211_CONF_CHANGE_POWER)
sc->config.txpowlimit = 2 * conf->power_level;
if (disable_radio) {
DPRINTF(sc, ATH_DBG_CONFIG, "idle: disabling radio\n");
ath_radio_disable(sc);
}
mutex_unlock(&sc->mutex);
return 0;

17
drivers/net/wireless/ath/ath9k/virtual.c
View file

@ -660,3 +660,20 @@ void ath9k_wiphy_set_scheduler(struct ath_softc *sc, unsigned int msec_int)
queue_delayed_work(sc->hw->workqueue, &sc->wiphy_work,
sc->wiphy_scheduler_int);
}
/* caller must hold wiphy_lock */
bool ath9k_all_wiphys_idle(struct ath_softc *sc)
{
unsigned int i;
if (sc->pri_wiphy->state != ATH_WIPHY_INACTIVE) {
return false;
}
for (i = 0; i < sc->num_sec_wiphy; i++) {
struct ath_wiphy *aphy = sc->sec_wiphy[i];
if (!aphy)
continue;
if (aphy->state != ATH_WIPHY_INACTIVE)
return false;
}
return true;
}