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ath9k_hw: add HTC init hardware call for special resets for AR9271 

AR9271 needs a full reset only upon the first reset, add
a call for the driver to enable these special resets. We
can optimize this out later without an export.

Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Sujith 2010-03-17 14:25:23 +05:30 committed by John W. Linville
parent 25e2ab17fd
commit 05020d236e
2 changed files with 15 additions and 0 deletions
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12
drivers/net/wireless/ath/ath9k/hw.c
View File

@ -1951,6 +1951,7 @@ int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan,
ath9k_hw_mark_phy_inactive(ah);
/* Only required on the first reset */
if (AR_SREV_9271(ah) && ah->htc_reset_init) {
REG_WRITE(ah,
AR9271_RESET_POWER_DOWN_CONTROL,
@ -1963,6 +1964,7 @@ int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan,
return -EINVAL;
}
/* Only required on the first reset */
if (AR_SREV_9271(ah) && ah->htc_reset_init) {
ah->htc_reset_init = false;
REG_WRITE(ah,
@ -3857,6 +3859,16 @@ void ath_gen_timer_isr(struct ath_hw *ah)
}
EXPORT_SYMBOL(ath_gen_timer_isr);
/********/
/* HTC */
/********/
void ath9k_hw_htc_resetinit(struct ath_hw *ah)
{
ah->htc_reset_init = true;
}
EXPORT_SYMBOL(ath9k_hw_htc_resetinit);
static struct {
u32 version;
const char * name;

3
drivers/net/wireless/ath/ath9k/hw.h
View File

@ -707,6 +707,9 @@ u32 ath9k_hw_gettsf32(struct ath_hw *ah);
void ath9k_hw_name(struct ath_hw *ah, char *hw_name, size_t len);
/* HTC */
void ath9k_hw_htc_resetinit(struct ath_hw *ah);
#define ATH_PCIE_CAP_LINK_CTRL 0x70
#define ATH_PCIE_CAP_LINK_L0S 1
#define ATH_PCIE_CAP_LINK_L1 2