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ath9k_hw: fix invalid extension channel noisefloor readings in HT20

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When the hardware is configured in HT20 mode, noise floor readings for
the extension channel often return invalid values, which keep the
values in the NF history buffer at the hardware-specific maximum limit.
Fix this by discarding the extension channel values when in HT20 mode.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Felix Fietkau 2010-07-23 04:07:48 +02:00 committed by John W. Linville
parent 4cee78614c
commit 866b7780fc
3 changed files with 10 additions and 2 deletions
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3
drivers/net/wireless/ath/ath9k/ar5008_phy.c
View File

@ -1506,6 +1506,9 @@ static void ar5008_hw_do_getnf(struct ath_hw *ah,
nf = MS(REG_READ(ah, AR_PHY_CH2_CCA), AR_PHY_CH2_MINCCA_PWR);
nfarray[2] = sign_extend(nf, 9);
if (!IS_CHAN_HT40(ah->curchan))
return;
nf = MS(REG_READ(ah, AR_PHY_EXT_CCA), AR_PHY_EXT_MINCCA_PWR);
nfarray[3] = sign_extend(nf, 9);

6
drivers/net/wireless/ath/ath9k/ar9002_phy.c
View File

@ -477,7 +477,8 @@ static void ar9002_hw_do_getnf(struct ath_hw *ah,
nfarray[0] = sign_extend(nf, 9);
nf = MS(REG_READ(ah, AR_PHY_EXT_CCA), AR9280_PHY_EXT_MINCCA_PWR);
nfarray[3] = sign_extend(nf, 9);
if (IS_CHAN_HT40(ah->curchan))
nfarray[3] = sign_extend(nf, 9);
if (AR_SREV_9285(ah) || AR_SREV_9271(ah))
return;
@ -486,7 +487,8 @@ static void ar9002_hw_do_getnf(struct ath_hw *ah,
nfarray[1] = sign_extend(nf, 9);
nf = MS(REG_READ(ah, AR_PHY_CH1_EXT_CCA), AR9280_PHY_CH1_EXT_MINCCA_PWR);
nfarray[4] = sign_extend(nf, 9);
if (IS_CHAN_HT40(ah->curchan))
nfarray[4] = sign_extend(nf, 9);
}
static void ar9002_hw_set_nf_limits(struct ath_hw *ah)

3
drivers/net/wireless/ath/ath9k/ar9003_phy.c
View File

@ -1029,6 +1029,9 @@ static void ar9003_hw_do_getnf(struct ath_hw *ah,
nf = MS(REG_READ(ah, AR_PHY_CCA_2), AR_PHY_CH2_MINCCA_PWR);
nfarray[2] = sign_extend(nf, 9);
if (!IS_CHAN_HT40(ah->curchan))
return;
nf = MS(REG_READ(ah, AR_PHY_EXT_CCA), AR_PHY_EXT_MINCCA_PWR);
nfarray[3] = sign_extend(nf, 9);