diff options
| author | Felix Fietkau <nbd@openwrt.org> | 2013-11-12 01:23:33 +0400 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2013-12-02 23:24:59 +0400 |
| commit | bf3dac5a6fcf33a80c99e7b7406f8e5af99e2a70 (patch) | |
| tree | 79b2b90a70f3c06eaf5bac8f78aa232da284a9a0 /drivers/net/wireless/ath/ath9k/main.c | |
| parent | f28c785f37a977cfd5879f4bfec99838053373f8 (diff) | |
| download | linux-bf3dac5a6fcf33a80c99e7b7406f8e5af99e2a70.tar.xz | |
ath9k: use a timer to put hardware into full sleep
When operating in client mode, the short period of time between scanning
and associating is often enough to put the hardware through several
FULL-SLEEP <-> AWAKE transitions, each wakeup requiring a reset to fully
recover the hardware.
This is completely unnecessary and can easily be avoided by deferring
the switch to full sleep.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/main.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/main.c | 27 |
1 files changed, 22 insertions, 5 deletions
diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c index e54ffdd36e21..f86404a70a73 100644 --- a/drivers/net/wireless/ath/ath9k/main.c +++ b/drivers/net/wireless/ath/ath9k/main.c @@ -82,6 +82,22 @@ static bool ath9k_setpower(struct ath_softc *sc, enum ath9k_power_mode mode) return ret; } +void ath_ps_full_sleep(unsigned long data) +{ + struct ath_softc *sc = (struct ath_softc *) data; + struct ath_common *common = ath9k_hw_common(sc->sc_ah); + bool reset; + + spin_lock(&common->cc_lock); + ath_hw_cycle_counters_update(common); + spin_unlock(&common->cc_lock); + + ath9k_hw_setrxabort(sc->sc_ah, 1); + ath9k_hw_stopdmarecv(sc->sc_ah, &reset); + + ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_FULL_SLEEP); +} + void ath9k_ps_wakeup(struct ath_softc *sc) { struct ath_common *common = ath9k_hw_common(sc->sc_ah); @@ -92,6 +108,7 @@ void ath9k_ps_wakeup(struct ath_softc *sc) if (++sc->ps_usecount != 1) goto unlock; + del_timer_sync(&sc->sleep_timer); power_mode = sc->sc_ah->power_mode; ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_AWAKE); @@ -117,17 +134,17 @@ void ath9k_ps_restore(struct ath_softc *sc) struct ath_common *common = ath9k_hw_common(sc->sc_ah); enum ath9k_power_mode mode; unsigned long flags; - bool reset; spin_lock_irqsave(&sc->sc_pm_lock, flags); if (--sc->ps_usecount != 0) goto unlock; if (sc->ps_idle) { - ath9k_hw_setrxabort(sc->sc_ah, 1); - ath9k_hw_stopdmarecv(sc->sc_ah, &reset); - mode = ATH9K_PM_FULL_SLEEP; - } else if (sc->ps_enabled && + mod_timer(&sc->sleep_timer, jiffies + HZ / 10); + goto unlock; + } + + if (sc->ps_enabled && !(sc->ps_flags & (PS_WAIT_FOR_BEACON | PS_WAIT_FOR_CAB | PS_WAIT_FOR_PSPOLL_DATA | |