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ath5k: IQ calibration for AR5211 is slightly different 

according to the HAL sources the calculation of the Q value is slightly
different for AR5211 chips.

i couldn't test this since IQ calibration never finishes on older parts. this
is a different problem...

Signed-off-by: Bruno Randolf <br1@einfach.org>
Acked-by: Nick Kossifidis <mickflemm@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Bruno Randolf 2010-03-09 16:56:15 +09:00 committed by John W. Linville
parent 7644395f8d
commit 49a85d211a
1 changed files with 9 additions and 2 deletions
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11
drivers/net/wireless/ath/ath5k/phy.c
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@ -1391,7 +1391,11 @@ static int ath5k_hw_rf511x_calibrate(struct ath5k_hw *ah,
}
i_coffd = ((i_pwr >> 1) + (q_pwr >> 1)) >> 7;
q_coffd = q_pwr >> 7;
if (ah->ah_version == AR5K_AR5211)
q_coffd = q_pwr >> 6;
else
q_coffd = q_pwr >> 7;
/* No correction */
if (i_coffd == 0 || q_coffd == 0)
@ -1405,7 +1409,10 @@ static int ath5k_hw_rf511x_calibrate(struct ath5k_hw *ah,
if (i_coff < -32)
i_coff = -32;
q_coff = (((s32)i_pwr / q_coffd) - 128);
if (ah->ah_version == AR5K_AR5211)
q_coff = (i_pwr / q_coffd) - 64;
else
q_coff = (i_pwr / q_coffd) - 128;
/* Boundary check */
if (q_coff > 15)