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ath9k: Store the correct max TX power level 

This patch fixes a bug where the max power level
was being calculated incorrectly.

Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Sujith 2009-02-12 10:06:36 +05:30 committed by John W. Linville
parent 469002983f
commit e421c7b35c
2 changed files with 18 additions and 0 deletions
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15
drivers/net/wireless/ath9k/eeprom.c
View File

@ -2615,6 +2615,21 @@ static int ath9k_hw_def_set_txpower(struct ath_hw *ah,
else
ah->regulatory.max_power_level = ratesArray[i];
switch(ar5416_get_ntxchains(ah->txchainmask)) {
case 1:
break;
case 2:
ah->regulatory.max_power_level += INCREASE_MAXPOW_BY_TWO_CHAIN;
break;
case 3:
ah->regulatory.max_power_level += INCREASE_MAXPOW_BY_THREE_CHAIN;
break;
default:
DPRINTF(ah->ah_sc, ATH_DBG_EEPROM,
"Invalid chainmask configuration\n");
break;
}
return 0;
}

3
drivers/net/wireless/ath9k/eeprom.h
View File

@ -75,6 +75,9 @@
#define SUB_NUM_CTL_MODES_AT_5G_40 2
#define SUB_NUM_CTL_MODES_AT_2G_40 3
#define INCREASE_MAXPOW_BY_TWO_CHAIN 6 /* 10*log10(2)*2 */
#define INCREASE_MAXPOW_BY_THREE_CHAIN 10 /* 10*log10(3)*2 */
#define AR_EEPROM_MAC(i) (0x1d+(i))
#define ATH9K_POW_SM(_r, _s) (((_r) & 0x3f) << (_s))
#define FREQ2FBIN(x, y) ((y) ? ((x) - 2300) : (((x) - 4800) / 5))