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ath9k: use consistent value for REDUCE_SCALED_POWER_BY_THREE_CHAIN

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The REDUCE_SCALED_POWER_BY_THREE_CHAIN symbol is
defined in different eeprom files, and the value
varies between the different files.

In eeprom_def.c and in ar9003_eeprom.c the value
of the symbol is 9, however the comments in these
files indicates the value should be 10*log10(3)*2
which is 9.54242509439325. Replace the the value
to 10 in these files.

Also add comments to eeprom_9287.c.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Gabor Juhos 2012-04-14 22:01:57 +02:00 committed by John W. Linville
parent d9e9145e49
commit 21bd6ea311
3 changed files with 4 additions and 4 deletions
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2
drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
View file

@ -31,7 +31,7 @@
#define CTL_11G_EXT (CTL_11G | EXT_ADDITIVE)
#define CTL_11B_EXT (CTL_11B | EXT_ADDITIVE)
#define REDUCE_SCALED_POWER_BY_TWO_CHAIN 6 /* 10*log10(2)*2 */
#define REDUCE_SCALED_POWER_BY_THREE_CHAIN 9 /* 10*log10(3)*2 */
#define REDUCE_SCALED_POWER_BY_THREE_CHAIN 10 /* 10*log10(3)*2 */
#define PWRINCR_3_TO_1_CHAIN 9 /* 10*log(3)*2 */
#define PWRINCR_3_TO_2_CHAIN 3 /* floor(10*log(3/2)*2) */
#define PWRINCR_2_TO_1_CHAIN 6 /* 10*log(2)*2 */

4
drivers/net/wireless/ath/ath9k/eeprom_9287.c
View file

@ -564,8 +564,8 @@ static void ath9k_hw_set_ar9287_power_per_rate_table(struct ath_hw *ah,
(((cfgCtl & ~CTL_MODE_M) | (pCtlMode[ctlMode] & CTL_MODE_M)) == \
((pEepData->ctlIndex[i] & CTL_MODE_M) | SD_NO_CTL))
#define REDUCE_SCALED_POWER_BY_TWO_CHAIN 6
#define REDUCE_SCALED_POWER_BY_THREE_CHAIN 10
#define REDUCE_SCALED_POWER_BY_TWO_CHAIN 6 /* 10*log10(2)*2 */
#define REDUCE_SCALED_POWER_BY_THREE_CHAIN 10 /* 10*log10(3)*2 */
u16 twiceMaxEdgePower;
int i;

2
drivers/net/wireless/ath/ath9k/eeprom_def.c
View file

@ -992,7 +992,7 @@ static void ath9k_hw_set_def_power_per_rate_table(struct ath_hw *ah,
u16 powerLimit)
{
#define REDUCE_SCALED_POWER_BY_TWO_CHAIN 6 /* 10*log10(2)*2 */
#define REDUCE_SCALED_POWER_BY_THREE_CHAIN 9 /* 10*log10(3)*2 */
#define REDUCE_SCALED_POWER_BY_THREE_CHAIN 10 /* 10*log10(3)*2 */
struct ar5416_eeprom_def *pEepData = &ah->eeprom.def;
u16 twiceMaxEdgePower;