For chips requiring RTC reset, TSF has to be restored after power on reset. Signed-off-by: Sujith <Sujith.Manoharan@xxxxxxxxxxx> --- drivers/net/wireless/ath/ath9k/hw.c | 9 +++++++++ 1 files changed, 9 insertions(+), 0 deletions(-) diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c index 82a2440..af5bb50 100644 --- a/drivers/net/wireless/ath/ath9k/hw.c +++ b/drivers/net/wireless/ath/ath9k/hw.c @@ -2338,6 +2338,7 @@ int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan, struct ath9k_channel *curchan = ah->curchan; u32 saveDefAntenna; u32 macStaId1; + u64 tsf = 0; int i, rx_chainmask, r; ah->extprotspacing = sc->ht_extprotspacing; @@ -2372,6 +2373,10 @@ int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan, macStaId1 = REG_READ(ah, AR_STA_ID1) & AR_STA_ID1_BASE_RATE_11B; + /* For chips on which RTC reset is done, save TSF before it gets cleared */ + if (AR_SREV_9280(ah) && ah->eep_ops->get_eeprom(ah, EEP_OL_PWRCTRL)) + tsf = ath9k_hw_gettsf64(ah); + saveLedState = REG_READ(ah, AR_CFG_LED) & (AR_CFG_LED_ASSOC_CTL | AR_CFG_LED_MODE_SEL | AR_CFG_LED_BLINK_THRESH_SEL | AR_CFG_LED_BLINK_SLOW); @@ -2398,6 +2403,10 @@ int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan, udelay(50); } + /* Restore TSF */ + if (tsf && AR_SREV_9280(ah) && ah->eep_ops->get_eeprom(ah, EEP_OL_PWRCTRL)) + ath9k_hw_settsf64(ah, tsf); + if (AR_SREV_9280_10_OR_LATER(ah)) REG_SET_BIT(ah, AR_GPIO_INPUT_EN_VAL, AR_GPIO_JTAG_DISABLE); -- 1.6.4.3 -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
