When the drop in Tx power for a particular mcs rate exceeds
the paprd scale factor, paprd may not work properly. Disable
paprd for any such rates.
Signed-off-by: Vasanthakumar Thiagarajan <vasanth@xxxxxxxxxxx>
---
drivers/net/wireless/ath/ath9k/ar9003_eeprom.c | 39 +++++++++++++++++++++++-
drivers/net/wireless/ath/ath9k/ar9003_paprd.c | 20 ++++--------
drivers/net/wireless/ath/ath9k/hw.h | 1 +
3 files changed, 45 insertions(+), 15 deletions(-)
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
index 9fa5793..0e9ea35 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
@@ -4751,16 +4751,53 @@ static void ath9k_hw_ar9300_set_txpower(struct ath_hw *ah,
{
struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
struct ath_common *common = ath9k_hw_common(ah);
+ struct ar9300_eeprom *eep = &ah->eeprom.ar9300_eep;
u8 targetPowerValT2[ar9300RateSize];
- unsigned int i = 0;
+ u8 target_power_val_t2_eep[ar9300RateSize];
+ unsigned int i = 0, paprd_scale_factor = 0;
+ u8 pwr_idx, min_pwridx;
ar9003_hw_set_target_power_eeprom(ah, chan->channel, targetPowerValT2);
+
+ if (ah->eep_ops->get_eeprom(ah, EEP_PAPRD)) {
+ if (IS_CHAN_2GHZ(chan))
+ ah->paprd_ratemask = (IS_CHAN_HT40(chan) ?
+ le32_to_cpu(eep->modalHeader2G.papdRateMaskHt40) :
+ le32_to_cpu(eep->modalHeader2G.papdRateMaskHt20))
+ & AR9300_PAPRD_RATE_MASK;
+ else
+ ah->paprd_ratemask = (IS_CHAN_HT40(chan) ?
+ le32_to_cpu(eep->modalHeader5G.papdRateMaskHt40) :
+ le32_to_cpu(eep->modalHeader5G.papdRateMaskHt20))
+ & AR9300_PAPRD_RATE_MASK;
+
+ memcpy(target_power_val_t2_eep, targetPowerValT2,
+ sizeof(targetPowerValT2));
+ }
+
ar9003_hw_set_power_per_rate_table(ah, chan,
targetPowerValT2, cfgCtl,
twiceAntennaReduction,
twiceMaxRegulatoryPower,
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] -
+ target_power_val_t2_eep[i]) >
+ paprd_scale_factor)) {
+ ah->paprd_ratemask &= ~(1 << i);
+ ath_dbg(common, ATH_DBG_EEPROM,
+ "paprd disabled for mcs %d\n", i);
+ }
+ }
+ }
+
regulatory->max_power_level = 0;
for (i = 0; i < ar9300RateSize; i++) {
if (targetPowerValT2[i] > regulatory->max_power_level)
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_paprd.c b/drivers/net/wireless/ath/ath9k/ar9003_paprd.c
index 4c74479..26cf31c 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_paprd.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_paprd.c
@@ -87,8 +87,6 @@ static int ar9003_get_training_power_5g(struct ath_hw *ah)
static int ar9003_paprd_setup_single_table(struct ath_hw *ah)
{
struct ath_common *common = ath9k_hw_common(ah);
- struct ar9300_eeprom *eep = &ah->eeprom.ar9300_eep;
- struct ar9300_modal_eep_header *hdr;
static const u32 ctrl0[3] = {
AR_PHY_PAPRD_CTRL0_B0,
AR_PHY_PAPRD_CTRL0_B1,
@@ -99,18 +97,9 @@ static int ar9003_paprd_setup_single_table(struct ath_hw *ah)
AR_PHY_PAPRD_CTRL1_B1,
AR_PHY_PAPRD_CTRL1_B2
};
- u32 am_mask, ht40_mask;
int training_power;
int i;
- if (ah->curchan && IS_CHAN_5GHZ(ah->curchan))
- hdr = &eep->modalHeader5G;
- else
- hdr = &eep->modalHeader2G;
-
- am_mask = le32_to_cpu(hdr->papdRateMaskHt20) & AR9300_PAPRD_RATE_MASK;
- ht40_mask = le32_to_cpu(hdr->papdRateMaskHt40) & AR9300_PAPRD_RATE_MASK;
-
if (IS_CHAN_2GHZ(ah->curchan))
training_power = ar9003_get_training_power_2g(ah);
else
@@ -126,9 +115,12 @@ static int ar9003_paprd_setup_single_table(struct ath_hw *ah)
"Training power: %d, Target power: %d\n",
ah->paprd_training_power, ah->paprd_target_power);
- REG_RMW_FIELD(ah, AR_PHY_PAPRD_AM2AM, AR_PHY_PAPRD_AM2AM_MASK, am_mask);
- REG_RMW_FIELD(ah, AR_PHY_PAPRD_AM2PM, AR_PHY_PAPRD_AM2PM_MASK, am_mask);
- REG_RMW_FIELD(ah, AR_PHY_PAPRD_HT40, AR_PHY_PAPRD_HT40_MASK, ht40_mask);
+ REG_RMW_FIELD(ah, AR_PHY_PAPRD_AM2AM, AR_PHY_PAPRD_AM2AM_MASK,
+ ah->paprd_ratemask);
+ REG_RMW_FIELD(ah, AR_PHY_PAPRD_AM2PM, AR_PHY_PAPRD_AM2PM_MASK,
+ ah->paprd_ratemask);
+ REG_RMW_FIELD(ah, AR_PHY_PAPRD_HT40, AR_PHY_PAPRD_HT40_MASK,
+ AR_PHY_PAPRD_HT40_MASK);
for (i = 0; i < ah->caps.max_txchains; i++) {
REG_RMW_FIELD(ah, ctrl0[i],
diff --git a/drivers/net/wireless/ath/ath9k/hw.h b/drivers/net/wireless/ath/ath9k/hw.h
index fb64ab8..3a6101b 100644
--- a/drivers/net/wireless/ath/ath9k/hw.h
+++ b/drivers/net/wireless/ath/ath9k/hw.h
@@ -835,6 +835,7 @@ struct ath_hw {
unsigned int paprd_target_power;
unsigned int paprd_training_power;
+ unsigned int paprd_ratemask;
u32 paprd_gain_table_entries[PAPRD_GAIN_TABLE_ENTRIES];
u8 paprd_gain_table_index[PAPRD_GAIN_TABLE_ENTRIES];
/*
--
1.7.0.4
--
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