diff options
| author | Vasanthakumar Thiagarajan <vasanth@atheros.com> | 2010-12-15 18:30:53 +0300 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2010-12-16 23:22:31 +0300 |
| commit | 45ef6a0bcc9cd8f13004789ec6decb52e1d3045c (patch) | |
| tree | 6191d717a17f9570658852a41b2f8694c1e6d147 /drivers/net/wireless/ath/ath9k/ar9003_eeprom.c | |
| parent | 7072bf62fb7abe5a91389d6271da520f29c79326 (diff) | |
| download | linux-45ef6a0bcc9cd8f13004789ec6decb52e1d3045c.tar.xz | |
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>
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/ar9003_eeprom.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/ar9003_eeprom.c | 34 |
1 files changed, 29 insertions, 5 deletions
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c index 0e9ea35f2fb4..f80ec7497d0f 100644 --- a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c +++ b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c @@ -4743,6 +4743,16 @@ static void ar9003_hw_set_power_per_rate_table(struct ath_hw *ah, } /* 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 @@ static void ath9k_hw_ar9300_set_txpower(struct ath_hw *ah, 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 @@ static void ath9k_hw_ar9300_set_txpower(struct ath_hw *ah, 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 @@ static void ath9k_hw_ar9300_set_txpower(struct ath_hw *ah, 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] - |