Search Linux Wireless

Re: [PATCH v2 2/4] ath9k_hw: clean up tx power handling

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 2011-09-19 10:41 PM, Luis R. Rodriguez wrote:
On Mon, Sep 19, 2011 at 10:38 AM, Felix Fietkau<nbd@xxxxxxxxxxx>  wrote:
 @@ -986,21 +995,15 @@ static void ath9k_hw_set_def_power_per_rate_table(struct ath_hw *ah,
                                                   struct ath9k_channel *chan,
                                                   int16_t *ratesArray,
                                                   u16 cfgCtl,
 -                                                 u16 AntennaReduction,
 -                                                 u16 twiceMaxRegulatoryPower,
 +                                                 u16 antenna_reduction,
                                                   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 */

 -       struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
         struct ar5416_eeprom_def *pEepData =&ah->eeprom.def;
         u16 twiceMaxEdgePower = MAX_RATE_POWER;
 -       static const u16 tpScaleReductionTable[5] =
 -               { 0, 3, 6, 9, MAX_RATE_POWER };
 -
         int i;
 -       int16_t twiceLargestAntenna;
         struct cal_ctl_data *rep;
         struct cal_target_power_leg targetPowerOfdm, targetPowerCck = {
                 0, { 0, 0, 0, 0}
 @@ -1012,7 +1015,7 @@ static void ath9k_hw_set_def_power_per_rate_table(struct ath_hw *ah,
         struct cal_target_power_ht targetPowerHt20, targetPowerHt40 = {
                 0, {0, 0, 0, 0}
         };
 -       u16 scaledPower = 0, minCtlPower, maxRegAllowedPower;
 +       u16 scaledPower = 0, minCtlPower;
         static const u16 ctlModesFor11a[] = {
                 CTL_11A, CTL_5GHT20, CTL_11A_EXT, CTL_5GHT40
         };

Although we do not use the reg->tp_scale I see no log which explains
that it will not, I'm reviewing TPC right now and we do need to
support it but its unclear to me yet if we are doing everything
correctly in mac80211 / cfg80211 for it. As far as I can see the
tp_scale stuff is used only if the default is not set, but as you
noted its always set to the default. I am trying to review the
internal code to see under what cases this changes but its hard to
review. Although I'd like to see this removed I'd prefer to treat this
separately from the cleanup you are doing, which I do find highly
valuable.
Why keep it? All it does is subtract something from the max regulatory power level, so it does not make any sense to keep this crap duplicated in all the the eeprom files. If we ever do need it (which I doubt), it needs to be added in a different place anyway.

- Felix
--
To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


[Index of Archives]     [Linux Host AP]     [ATH6KL]     [Linux Bluetooth]     [Linux Netdev]     [Kernel Newbies]     [Linux Kernel]     [IDE]     [Security]     [Git]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Linux ATA RAID]     [Samba]     [Device Mapper]
  Powered by Linux