ath9k_hw: Configure appropriate Tx power when PAPRD fails
Target Tx power available in eeprom is for PAPRD. If PAPRD
fails, paprd scale factor needs to be detected from this
target tx power.
Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
index 0e9ea35..f80ec74 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
@@ -4743,6 +4743,16 @@
} /* end ctl mode checking */
}
+static inline u8 mcsidx_to_tgtpwridx(unsigned int mcs_idx, u8 base_pwridx)
+{
+ u8 mod_idx = mcs_idx % 8;
+
+ if (mod_idx <= 3)
+ return mod_idx ? (base_pwridx + 1) : base_pwridx;
+ else
+ return base_pwridx + 4 * (mcs_idx / 8) + mod_idx - 2;
+}
+
static void ath9k_hw_ar9300_set_txpower(struct ath_hw *ah,
struct ath9k_channel *chan, u16 cfgCtl,
u8 twiceAntennaReduction,
@@ -4755,7 +4765,7 @@
u8 targetPowerValT2[ar9300RateSize];
u8 target_power_val_t2_eep[ar9300RateSize];
unsigned int i = 0, paprd_scale_factor = 0;
- u8 pwr_idx, min_pwridx;
+ u8 pwr_idx, min_pwridx = 0;
ar9003_hw_set_target_power_eeprom(ah, chan->channel, targetPowerValT2);
@@ -4771,6 +4781,24 @@
le32_to_cpu(eep->modalHeader5G.papdRateMaskHt20))
& AR9300_PAPRD_RATE_MASK;
+ paprd_scale_factor = ar9003_get_paprd_scale_factor(ah, chan);
+ min_pwridx = IS_CHAN_HT40(chan) ? ALL_TARGET_HT40_0_8_16 :
+ ALL_TARGET_HT20_0_8_16;
+
+ if (!ah->paprd_table_write_done) {
+ memcpy(target_power_val_t2_eep, targetPowerValT2,
+ sizeof(targetPowerValT2));
+ for (i = 0; i < 24; i++) {
+ pwr_idx = mcsidx_to_tgtpwridx(i, min_pwridx);
+ if (ah->paprd_ratemask & (1 << i)) {
+ if (targetPowerValT2[pwr_idx] &&
+ targetPowerValT2[pwr_idx] ==
+ target_power_val_t2_eep[pwr_idx])
+ targetPowerValT2[pwr_idx] -=
+ paprd_scale_factor;
+ }
+ }
+ }
memcpy(target_power_val_t2_eep, targetPowerValT2,
sizeof(targetPowerValT2));
}
@@ -4782,10 +4810,6 @@
powerLimit);
if (ah->eep_ops->get_eeprom(ah, EEP_PAPRD)) {
- paprd_scale_factor = ar9003_get_paprd_scale_factor(ah, chan);
- min_pwridx = IS_CHAN_HT40(chan) ? ALL_TARGET_HT40_0_8_16 :
- ALL_TARGET_HT20_0_8_16;
-
for (i = 0; i < ar9300RateSize; i++) {
if ((ah->paprd_ratemask & (1 << i)) &&
(abs(targetPowerValT2[i] -