2011-10-13 05:20:24

by Rajkumar Manoharan

[permalink] [raw]
Subject: [PATCH v2] ath9k_hw: Fix ASPM L1 issue for AR9480

Because of not clearing Bit 14 of AR_WA, the ASPM L1 is not
enabled when entering into sleep mode. AR9480 does not need
bit 14 to be set.

Cc: [email protected]
Signed-off-by: Rajkumar Manoharan <[email protected]>
---
drivers/net/wireless/ath/ath9k/hw.c | 6 ++++--
1 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index fd7c207..58794a4 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -541,6 +541,9 @@ static int __ath9k_hw_init(struct ath_hw *ah)
return -EIO;
}

+ if (AR_SREV_9480(ah))
+ ah->WARegVal &= ~AR_WA_D3_L1_DISABLE;
+
ath9k_hw_init_defaults(ah);
ath9k_hw_init_config(ah);

@@ -1776,8 +1779,7 @@ static void ath9k_set_power_sleep(struct ath_hw *ah, int setChip)
}

/* Clear Bit 14 of AR_WA after putting chip into Full Sleep mode. */
- if (!AR_SREV_9480(ah))
- REG_WRITE(ah, AR_WA, ah->WARegVal & ~AR_WA_D3_L1_DISABLE);
+ REG_WRITE(ah, AR_WA, ah->WARegVal & ~AR_WA_D3_L1_DISABLE);
}

/*
--
1.7.7