From bee008b78307ccc2e17c7ec152dd2098d5f2e1fa Mon Sep 17 00:00:00 2001 From: Wey-Yi Guy Date: Mon, 23 Aug 2010 07:57:04 -0700 Subject: 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 Signed-off-by: John W. Linville --- drivers/net/wireless/iwlwifi/iwl-core.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) (limited to 'drivers/net/wireless/iwlwifi/iwl-core.c') diff --git a/drivers/net/wireless/iwlwifi/iwl-core.c b/drivers/net/wireless/iwlwifi/iwl-core.c index 5e8fc720c570..13d2dcea85d1 100644 --- a/drivers/net/wireless/iwlwifi/iwl-core.c +++ b/drivers/net/wireless/iwlwifi/iwl-core.c @@ -780,6 +780,10 @@ EXPORT_SYMBOL(iwl_set_rxon_ht); */ static int iwl_get_active_rx_chain_count(struct iwl_priv *priv) { + if (priv->cfg->advanced_bt_coexist && priv->bt_full_concurrent) { + /* operated as 1x1 in full concurrency mode */ + return IWL_NUM_RX_CHAINS_SINGLE; + } /* # of Rx chains to use when expecting MIMO. */ if (is_single_rx_stream(priv)) return IWL_NUM_RX_CHAINS_SINGLE; @@ -836,11 +840,16 @@ void iwl_set_rxon_chain(struct iwl_priv *priv) * Before first association, we assume all antennas are connected. * Just after first association, iwl_chain_noise_calibration() * checks which antennas actually *are* connected. */ - if (priv->chain_noise_data.active_chains) + if (priv->chain_noise_data.active_chains) active_chains = priv->chain_noise_data.active_chains; else active_chains = priv->hw_params.valid_rx_ant; + if (priv->cfg->advanced_bt_coexist && priv->bt_full_concurrent) { + /* operated as 1x1 in full concurrency mode */ + active_chains = first_antenna(active_chains); + } + rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS; /* How many receivers should we use? */ -- cgit v1.2.2