ath9k: Clear TSF2 properly

Chips in the AR9003 family have a second TSF, which
needs to be cleared when putting the card to
sleep.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

diff --git a/drivers/net/wireless/ath/ath9k/ar9003_wow.c b/drivers/net/wireless/ath/ath9k/ar9003_wow.c
index cf45b91..2dc50a0 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/ar9003_wow.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_wow.c
@@ -35,6 +35,15 @@ static void ath9k_hw_set_powermode_wow_sleep(struct ath_hw *ah)
                return;
        }
 
+       if (AR_SREV_9462(ah) || AR_SREV_9565(ah)) {
+               if (!REG_READ(ah, AR_MAC_PCU_GEN_TIMER_TSF_SEL))
+                       REG_CLR_BIT(ah, AR_DIRECT_CONNECT, AR_DC_TSF2_ENABLE);
+       } else if (AR_SREV_9485(ah)){
+               if (!(REG_READ(ah, AR_NDP2_TIMER_MODE) &
+                     AR_GEN_TIMERS2_MODE_ENABLE_MASK))
+                       REG_CLR_BIT(ah, AR_DIRECT_CONNECT, AR_DC_TSF2_ENABLE);
+       }
+
        REG_WRITE(ah, AR_RTC_FORCE_WAKE, AR_RTC_FORCE_WAKE_ON_INT);
 }
 

diff --git a/drivers/net/wireless/ath/ath9k/reg.h b/drivers/net/wireless/ath/ath9k/reg.h
index b1b803d..9587ec6 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/reg.h
+++ b/drivers/net/wireless/ath/ath9k/reg.h
@@ -1883,6 +1883,7 @@ enum {
 #define AR_FIRST_NDP_TIMER                  7
 #define AR_NDP2_PERIOD                      0x81a0
 #define AR_NDP2_TIMER_MODE                  0x81c0
+#define AR_GEN_TIMERS2_MODE_ENABLE_MASK     0x000000FF
 
 #define AR_GEN_TIMERS(_i)                   (0x8200 + ((_i) << 2))
 #define AR_NEXT_TBTT_TIMER                  AR_GEN_TIMERS(0)
@@ -1978,6 +1979,7 @@ enum {
 
 #define AR_DIRECT_CONNECT                              0x83a0
 #define AR_DC_AP_STA_EN                                0x00000001
+#define AR_DC_TSF2_ENABLE                              0x00000001
 
 #define AR_AES_MUTE_MASK0       0x805c
 #define AR_AES_MUTE_MASK0_FC    0x0000FFFF