xiaomi-sm8450/android_kernel_xiaomi_sm8450
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ath9k: fix power consumption on network sleep when BTCOEX is enabled

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The chip is waken up for every 45ms in btcoex timer cycle to
for sharing the radio between BT and WLAN. Whenever the wlan
interface is in network sleep mode, do not schedule hw timers.
This could reduce power consumption on idle associated state.

Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Rajkumar Manoharan
2012-07-01 19:53:54 +05:30
committed by John W. Linville
parent b73f3e7804
commit 08d4df410a
3 changed files with 22 additions and 0 deletions
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16
drivers/net/wireless/ath/ath9k/gpio.c
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@@ -194,6 +194,14 @@ static void ath_btcoex_period_timer(unsigned long data)
struct ath_mci_profile *mci = &btcoex->mci;
u32 timer_period;
bool is_btscan;
unsigned long flags;
spin_lock_irqsave(&sc->sc_pm_lock, flags);
if (sc->sc_ah->power_mode == ATH9K_PM_NETWORK_SLEEP) {
spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
goto skip_hw_wakeup;
}
spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
ath9k_ps_wakeup(sc);
if (!(ah->caps.hw_caps & ATH9K_HW_CAP_MCI))
@@ -232,6 +240,7 @@ static void ath_btcoex_period_timer(unsigned long data)
}
ath9k_ps_restore(sc);
skip_hw_wakeup:
timer_period = btcoex->btcoex_period;
mod_timer(&btcoex->period_timer, jiffies + msecs_to_jiffies(timer_period));
}
@@ -328,6 +337,13 @@ void ath9k_btcoex_timer_pause(struct ath_softc *sc)
btcoex->hw_timer_enabled = false;
}
void ath9k_btcoex_stop_gen_timer(struct ath_softc *sc)
{
struct ath_btcoex *btcoex = &sc->btcoex;
ath9k_gen_timer_stop(sc->sc_ah, btcoex->no_stomp_timer);
}
u16 ath9k_btcoex_aggr_limit(struct ath_softc *sc, u32 max_4ms_framelen)
{
struct ath_btcoex *btcoex = &sc->btcoex;