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From: Adrian Chadd <adrian@FreeBSD.org>
Date: Wed, 13 Apr 2011 04:40:59 +0000 (UTC)
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Subject: cvs commit: src/sys/dev/ath/ath_hal/ar9002 ar9002phy.h
	ar9285_reset.c
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adrian      2011-04-13 04:40:59 UTC

  FreeBSD src repository

  Modified files:
    sys/dev/ath/ath_hal/ar9002 ar9002phy.h ar9285_reset.c 
  Log:
  SVN rev 220590 on 2011-04-13 04:40:59Z by adrian
  
  Port over a TX gain fix from ath9k specific to the AR9285 (Kite) and AR9271.
  Note: this HAL currently only supports the AR9285.
  
  From Linux ath9k:
  
  The problem is that when the attenuation is increased,
  the rate will start to drop from MCS7 -> MCS6, and finally
  will see MCS1 -> CCK_11Mbps. When the rate is changed b/w
  CCK and OFDM, it will use register desired_scale to calculate
  how much tx gain need to change.
  
  The output power with the same tx gain for CCK and OFDM modulated
  signals are different. This difference is constant for AR9280
  but not AR9285/AR9271. It has different PA architecture
  a constant. So it should be calibrated against this PA
  characteristic.
  
  The driver has to read the calibrated values from EEPROM and set
  the tx power registers accordingly.
  
  Revision  Changes    Path
  1.2       +7 -0      src/sys/dev/ath/ath_hal/ar9002/ar9002phy.h
  1.10      +37 -1     src/sys/dev/ath/ath_hal/ar9002/ar9285_reset.c