diff options
| author | Luis R. Rodriguez <lrodriguez@atheros.com> | 2010-04-15 17:38:16 -0400 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2010-04-16 15:43:19 -0400 |
| commit | bbd79af5639bd51af1119e5df866568063a1b011 (patch) | |
| tree | 798e718b52f70851d07533fb734ae8c15c052758 /drivers/net/wireless/ath/ath9k/hw.c | |
| parent | e041228fed0c9fe8b5c3b8e0ca66b08178b26a87 (diff) | |
| download | lwn-bbd79af5639bd51af1119e5df866568063a1b011.tar.gz lwn-bbd79af5639bd51af1119e5df866568063a1b011.zip | |
ath9k_hw: add some comments for ath9k_set_power_network_sleep()
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/hw.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/hw.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c index f1405042a48d..ea831f575a9d 100644 --- a/drivers/net/wireless/ath/ath9k/hw.c +++ b/drivers/net/wireless/ath/ath9k/hw.c @@ -2036,6 +2036,11 @@ static void ath9k_set_power_sleep(struct ath_hw *ah, int setChip) } } +/* + * Notify Power Management is enabled in self-generating + * frames. If request, set power mode of chip to + * auto/normal. Duration in units of 128us (1/8 TU). + */ static void ath9k_set_power_network_sleep(struct ath_hw *ah, int setChip) { REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SAV); @@ -2043,9 +2048,14 @@ static void ath9k_set_power_network_sleep(struct ath_hw *ah, int setChip) struct ath9k_hw_capabilities *pCap = &ah->caps; if (!(pCap->hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) { + /* Set WakeOnInterrupt bit; clear ForceWake bit */ REG_WRITE(ah, AR_RTC_FORCE_WAKE, AR_RTC_FORCE_WAKE_ON_INT); } else { + /* + * Clear the RTC force wake bit to allow the + * mac to go to sleep. + */ REG_CLR_BIT(ah, AR_RTC_FORCE_WAKE, AR_RTC_FORCE_WAKE_EN); } |