iwlwifi: add bt full concurrency support
Adding the bluetooth full concurrency support for WiFi/BT combo devices.
Driver should configure uCode to operate in "full concurrency" mode (via
LUT) if both conditions are met:
- Antenna Coupling is more than 35dB
- WiFi Channel Inhibition Request is hornored by BT Core
Currently, there is no antenna coupling information provided by uCode;
use module parameter to specified the antenna coupling in dB.
When in "full concurrency" mode, driver need to download different LUT
to uCode while sending bt configuration command; also, driver need to
configure the device operate in 1x1 while in full concurrency mode.
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
index e1b5250..e0ec6c0 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
@@ -1333,6 +1333,12 @@
if (priv->cfg->scan_tx_antennas[band])
scan_tx_antennas = priv->cfg->scan_tx_antennas[band];
+ if (priv->cfg->advanced_bt_coexist && priv->bt_full_concurrent) {
+ /* operated as 1x1 in full concurrency mode */
+ scan_tx_antennas =
+ first_antenna(priv->cfg->scan_tx_antennas[band]);
+ }
+
priv->scan_tx_ant[band] = iwl_toggle_tx_ant(priv, priv->scan_tx_ant[band],
scan_tx_antennas);
rate_flags |= iwl_ant_idx_to_flags(priv->scan_tx_ant[band]);
@@ -1351,6 +1357,11 @@
rx_ant = first_antenna(active_chains);
}
+ if (priv->cfg->advanced_bt_coexist && priv->bt_full_concurrent) {
+ /* operated as 1x1 in full concurrency mode */
+ rx_ant = first_antenna(rx_ant);
+ }
+
/* MIMO is not used here, but value is required */
rx_chain |= priv->hw_params.valid_rx_ant << RXON_RX_CHAIN_VALID_POS;
rx_chain |= rx_ant << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS;