diff options
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-eeprom.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-eeprom.c | 49 |
1 files changed, 35 insertions, 14 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-eeprom.c b/drivers/net/wireless/iwlwifi/iwl-eeprom.c index e42eb6499f0..ac88ff042d4 100644 --- a/drivers/net/wireless/iwlwifi/iwl-eeprom.c +++ b/drivers/net/wireless/iwlwifi/iwl-eeprom.c @@ -762,7 +762,8 @@ static int iwl_mod_ht40_chan_info(struct iwl_priv *priv, * find the highest tx power from all chains for the channel */ static s8 iwl_get_max_txpower_avg(struct iwl_priv *priv, - struct iwl_eeprom_enhanced_txpwr *enhanced_txpower, int element) + struct iwl_eeprom_enhanced_txpwr *enhanced_txpower, + int element, s8 *max_txpower_in_half_dbm) { s8 max_txpower_avg = 0; /* (dBm) */ @@ -794,10 +795,14 @@ static s8 iwl_get_max_txpower_avg(struct iwl_priv *priv, (enhanced_txpower[element].mimo3_max > max_txpower_avg)) max_txpower_avg = enhanced_txpower[element].mimo3_max; - /* max. tx power in EEPROM is in 1/2 dBm format - * convert from 1/2 dBm to dBm + /* + * max. tx power in EEPROM is in 1/2 dBm format + * convert from 1/2 dBm to dBm (round-up convert) + * but we also do not want to loss 1/2 dBm resolution which + * will impact performance */ - return max_txpower_avg >> 1; + *max_txpower_in_half_dbm = max_txpower_avg; + return (max_txpower_avg & 0x01) + (max_txpower_avg >> 1); } /** @@ -806,7 +811,7 @@ static s8 iwl_get_max_txpower_avg(struct iwl_priv *priv, */ static s8 iwl_update_common_txpower(struct iwl_priv *priv, struct iwl_eeprom_enhanced_txpwr *enhanced_txpower, - int section, int element) + int section, int element, s8 *max_txpower_in_half_dbm) { struct iwl_channel_info *ch_info; int ch; @@ -820,20 +825,22 @@ static s8 iwl_update_common_txpower(struct iwl_priv *priv, if (element == EEPROM_TXPOWER_COMMON_HT40_INDEX) is_ht40 = true; max_txpower_avg = - iwl_get_max_txpower_avg(priv, enhanced_txpower, element); + iwl_get_max_txpower_avg(priv, enhanced_txpower, + element, max_txpower_in_half_dbm); + ch_info = priv->channel_info; for (ch = 0; ch < priv->channel_count; ch++) { /* find matching band and update tx power if needed */ if ((ch_info->band == enhinfo[section].band) && - (ch_info->max_power_avg < max_txpower_avg) && (!is_ht40)) { + (ch_info->max_power_avg < max_txpower_avg) && + (!is_ht40)) { /* Update regulatory-based run-time data */ ch_info->max_power_avg = ch_info->curr_txpow = - max_txpower_avg; + max_txpower_avg; ch_info->scan_power = max_txpower_avg; } if ((ch_info->band == enhinfo[section].band) && is_ht40 && - ch_info->ht40_max_power_avg && (ch_info->ht40_max_power_avg < max_txpower_avg)) { /* Update regulatory-based run-time data */ ch_info->ht40_max_power_avg = max_txpower_avg; @@ -849,7 +856,7 @@ static s8 iwl_update_common_txpower(struct iwl_priv *priv, */ static s8 iwl_update_channel_txpower(struct iwl_priv *priv, struct iwl_eeprom_enhanced_txpwr *enhanced_txpower, - int section, int element) + int section, int element, s8 *max_txpower_in_half_dbm) { struct iwl_channel_info *ch_info; int ch; @@ -858,7 +865,8 @@ static s8 iwl_update_channel_txpower(struct iwl_priv *priv, channel = enhinfo[section].iwl_eeprom_section_channel[element]; max_txpower_avg = - iwl_get_max_txpower_avg(priv, enhanced_txpower, element); + iwl_get_max_txpower_avg(priv, enhanced_txpower, + element, max_txpower_in_half_dbm); ch_info = priv->channel_info; for (ch = 0; ch < priv->channel_count; ch++) { @@ -872,7 +880,6 @@ static s8 iwl_update_channel_txpower(struct iwl_priv *priv, ch_info->scan_power = max_txpower_avg; } if ((enhinfo[section].is_ht40) && - (ch_info->ht40_max_power_avg) && (ch_info->ht40_max_power_avg < max_txpower_avg)) { /* Update regulatory-based run-time data */ ch_info->ht40_max_power_avg = max_txpower_avg; @@ -894,6 +901,7 @@ void iwlcore_eeprom_enhanced_txpower(struct iwl_priv *priv) struct iwl_eeprom_enhanced_txpwr *enhanced_txpower; u32 offset; s8 max_txpower_avg; /* (dBm) */ + s8 max_txpower_in_half_dbm; /* (half-dBm) */ /* Loop through all the sections * adjust bands and channel's max tx power @@ -920,16 +928,29 @@ void iwlcore_eeprom_enhanced_txpower(struct iwl_priv *priv) if (enhinfo[section].is_common) max_txpower_avg = iwl_update_common_txpower(priv, - enhanced_txpower, section, element); + enhanced_txpower, section, + element, + &max_txpower_in_half_dbm); else max_txpower_avg = iwl_update_channel_txpower(priv, - enhanced_txpower, section, element); + enhanced_txpower, section, + element, + &max_txpower_in_half_dbm); /* Update the tx_power_user_lmt to the highest power * supported by any channel */ if (max_txpower_avg > priv->tx_power_user_lmt) priv->tx_power_user_lmt = max_txpower_avg; + + /* + * Update the tx_power_lmt_in_half_dbm to + * the highest power supported by any channel + */ + if (max_txpower_in_half_dbm > + priv->tx_power_lmt_in_half_dbm) + priv->tx_power_lmt_in_half_dbm = + max_txpower_in_half_dbm; } } } |