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 <b...@einfach.org>
---
drivers/net/wireless/ath/ath5k/phy.c | 11 +++++++++--
1 files changed, 9 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/ath/ath5k/phy.c
b/drivers/net/wireless/ath/ath5k/phy.c
index 95cebd6..3a18742 100644
--- a/drivers/net/wireless/ath/ath5k/phy.c
+++ b/drivers/net/wireless/ath/ath5k/phy.c
@@ -1399,7 +1399,11 @@ 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;
/* protect against divide by 0 and loss of sign bits */
if (i_coffd == 0 || q_coffd < 2)
@@ -1408,7 +1412,10 @@ static int ath5k_hw_rf511x_calibrate(struct ath5k_hw *ah,
i_coff = (-iq_corr) / i_coffd;
i_coff = clamp(i_coff, -32, 31); /* signed 6 bit */
- q_coff = (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;
q_coff = clamp(q_coff, -16, 15); /* signed 5 bit */
ATH5K_DBG_UNLIMIT(ah->ah_sc, ATH5K_DEBUG_CALIBRATE,
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