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authorSenthil Balasubramanian <senthilkumar@atheros.com>2009-09-18 15:07:03 +0530
committerJohn W. Linville <linville@tuxdriver.com>2009-10-07 16:39:40 -0400
commit63a75b912b00fbafeb54849ca3bcd0295ad68609 (patch)
tree6d7f0006efea33e4a87e58a4bdb7a45339b78392 /drivers
parent1d50a69b18818b276333590d1f2c9382d292d84d (diff)
ath9k: Reduce PLL Settle time and eliminate redundant PLL calls.
Reduce PLL Settle time and eliminate redundant PLL calls. Also reduce the LoadNF timeout from 10 msec to 250usec as the 10 msec timeout was hit with AR9285 in some cases. Signed-off-by: Senthil Balasubramanian <senthilkumar@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/wireless/ath/ath9k/calib.c4
-rw-r--r--drivers/net/wireless/ath/ath9k/hw.c15
-rw-r--r--drivers/net/wireless/ath/ath9k/hw.h2
3 files changed, 14 insertions, 7 deletions
diff --git a/drivers/net/wireless/ath/ath9k/calib.c b/drivers/net/wireless/ath/ath9k/calib.c
index 9c46b54d2a9..d347ea79e77 100644
--- a/drivers/net/wireless/ath/ath9k/calib.c
+++ b/drivers/net/wireless/ath/ath9k/calib.c
@@ -653,11 +653,11 @@ void ath9k_hw_loadnf(struct ath_hw *ah, struct ath9k_channel *chan)
AR_PHY_AGC_CONTROL_NO_UPDATE_NF);
REG_SET_BIT(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_NF);
- for (j = 0; j < 1000; j++) {
+ for (j = 0; j < 5; j++) {
if ((REG_READ(ah, AR_PHY_AGC_CONTROL) &
AR_PHY_AGC_CONTROL_NF) == 0)
break;
- udelay(10);
+ udelay(50);
}
for (i = 0; i < NUM_NF_READINGS; i++) {
diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index eb408831f3c..b53faa09bdb 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -1691,8 +1691,6 @@ static bool ath9k_hw_set_reset(struct ath_hw *ah, int type)
if (!AR_SREV_9100(ah))
REG_WRITE(ah, AR_RC, 0);
- ath9k_hw_init_pll(ah, NULL);
-
if (AR_SREV_9100(ah))
udelay(50);
@@ -2885,6 +2883,7 @@ static bool ath9k_hw_set_power_awake(struct ath_hw *ah, int setChip)
ATH9K_RESET_POWER_ON) != true) {
return false;
}
+ ath9k_hw_init_pll(ah, NULL);
}
if (AR_SREV_9100(ah))
REG_SET_BIT(ah, AR_RTC_RESET,
@@ -3968,7 +3967,11 @@ void ath9k_hw_setrxfilter(struct ath_hw *ah, u32 bits)
bool ath9k_hw_phy_disable(struct ath_hw *ah)
{
- return ath9k_hw_set_reset_reg(ah, ATH9K_RESET_WARM);
+ if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_WARM))
+ return false;
+
+ ath9k_hw_init_pll(ah, NULL);
+ return true;
}
bool ath9k_hw_disable(struct ath_hw *ah)
@@ -3976,7 +3979,11 @@ bool ath9k_hw_disable(struct ath_hw *ah)
if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE))
return false;
- return ath9k_hw_set_reset_reg(ah, ATH9K_RESET_COLD);
+ if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_COLD))
+ return false;
+
+ ath9k_hw_init_pll(ah, NULL);
+ return true;
}
void ath9k_hw_set_txpowerlimit(struct ath_hw *ah, u32 limit)
diff --git a/drivers/net/wireless/ath/ath9k/hw.h b/drivers/net/wireless/ath/ath9k/hw.h
index 6673a810336..773f5c405c0 100644
--- a/drivers/net/wireless/ath/ath9k/hw.h
+++ b/drivers/net/wireless/ath/ath9k/hw.h
@@ -102,7 +102,7 @@
#define AR_GPIO_BIT(_gpio) (1 << (_gpio))
#define BASE_ACTIVATE_DELAY 100
-#define RTC_PLL_SETTLE_DELAY 1000
+#define RTC_PLL_SETTLE_DELAY 100
#define COEF_SCALE_S 24
#define HT40_CHANNEL_CENTER_SHIFT 10