diff options
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-agn-lib.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-agn-lib.c | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c index 9d88565cabf8..cb4b31f658c3 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c @@ -274,9 +274,20 @@ void iwlagn_send_advance_bt_config(struct iwl_priv *priv) return; } + /* + * Possible situations when BT needs to take over for receive, + * at the same time where STA needs to response to AP's frame(s), + * reduce the tx power of the required response frames, by that, + * allow the concurrent BT receive & WiFi transmit + * (BT - ANT A, WiFi -ANT B), without interference to one another + * + * Reduced tx power apply to control frames only (ACK/Back/CTS) + * when indicated by the BT config command + */ basic.kill_ack_mask = priv->kill_ack_mask; basic.kill_cts_mask = priv->kill_cts_mask; - basic.reduce_txpower = priv->reduced_txpower; + if (priv->reduced_txpower) + basic.reduce_txpower = IWLAGN_BT_REDUCED_TX_PWR; basic.valid = priv->bt_valid; /* @@ -590,6 +601,15 @@ static bool iwlagn_set_kill_msk(struct iwl_priv *priv, return need_update; } +/* + * Upon RSSI changes, sends a bt config command with following changes + * 1. enable/disable "reduced control frames tx power + * 2. update the "kill)ack_mask" and "kill_cts_mask" + * + * If "reduced tx power" is enabled, uCode shall + * 1. ACK/Back/CTS rate shall reduced to 6Mbps + * 2. not use duplciate 20/40MHz mode + */ static bool iwlagn_fill_txpower_mode(struct iwl_priv *priv, struct iwl_bt_uart_msg *uart_msg) { |