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ath5k: Linear PCDAC code fixes

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* Set correct xpd curve indices for high/low gain curves during
   rfbuffer setup on RF5112B with both calibration curves available.

 * Don't return zero min power when we have the same pcdac value
   twice because it breaks interpolation. Instead return the right
   x barrier as we do when we have equal power levels for 2 different
   pcdac values.

Signed-off-by: Nick Kossifidis <mickflemm@gmail.com>
Acked-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Nick Kossifidis 2009-08-10 03:27:59 +03:00 committed by John W. Linville
parent c38e7a9348
commit d1cb0bdac1
1 changed files with 17 additions and 7 deletions
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24
drivers/net/wireless/ath/ath5k/phy.c
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@ -740,13 +740,22 @@ int ath5k_hw_rfregs_init(struct ath5k_hw *ah, struct ieee80211_channel *channel,
AR5K_RF_XPD_GAIN, true);
} else {
/* TODO: Set high and low gain bits */
ath5k_hw_rfb_op(ah, rf_regs,
ee->ee_x_gain[ee_mode],
u8 *pdg_curve_to_idx = ee->ee_pdc_to_idx[ee_mode];
if (ee->ee_pd_gains[ee_mode] > 1) {
ath5k_hw_rfb_op(ah, rf_regs,
pdg_curve_to_idx[0],
AR5K_RF_PD_GAIN_LO, true);
ath5k_hw_rfb_op(ah, rf_regs,
ee->ee_x_gain[ee_mode],
ath5k_hw_rfb_op(ah, rf_regs,
pdg_curve_to_idx[1],
AR5K_RF_PD_GAIN_HI, true);
} else {
ath5k_hw_rfb_op(ah, rf_regs,
pdg_curve_to_idx[0],
AR5K_RF_PD_GAIN_LO, true);
ath5k_hw_rfb_op(ah, rf_regs,
pdg_curve_to_idx[0],
AR5K_RF_PD_GAIN_HI, true);
}
/* Lower synth voltage on Rev 2 */
ath5k_hw_rfb_op(ah, rf_regs, 2,
@ -1896,8 +1905,9 @@ ath5k_get_linear_pcdac_min(const u8 *stepL, const u8 *stepR,
s16 min_pwrL, min_pwrR;
s16 pwr_i;
if (WARN_ON(stepL[0] == stepL[1] || stepR[0] == stepR[1]))
return 0;
/* Some vendors write the same pcdac value twice !!! */
if (stepL[0] == stepL[1] || stepR[0] == stepR[1])
return max(pwrL[0], pwrR[0]);
if (pwrL[0] == pwrL[1])
min_pwrL = pwrL[0];