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iwlwifi: mvm: BT Coex - update integration with rate control 

Remove code that is not needed and always allow MIMO when
in tight mode. In loose mode, we should avoid MIMO since BT
can use the other antenna to Rx while we Tx.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Emmanuel Grumbach 2013-10-06 11:41:20 +03:00 committed by Johannes Berg
parent e9fff7767e
commit ffa6c7077c
3 changed files with 23 additions and 43 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
drivers/net/wireless/iwlwifi/mvm/bt-coex.c
View File

@ -921,6 +921,24 @@ u16 iwl_mvm_bt_coex_agg_time_limit(struct iwl_mvm *mvm,
return LINK_QUAL_AGG_TIME_LIMIT_BT_ACT;
}
bool iwl_mvm_bt_coex_is_mimo_allowed(struct iwl_mvm *mvm,
struct ieee80211_sta *sta)
{
struct iwl_mvm_sta *mvmsta = (void *)sta->drv_priv;
if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) <
BT_HIGH_TRAFFIC)
return true;
/*
* In Tight, BT can't Rx while we Tx, so use both antennas since BT is
* already killed.
* In Loose, BT can Rx while we Tx, so forbid MIMO to let BT Rx while we
* Tx.
*/
return iwl_get_coex_type(mvm, mvmsta->vif) == BT_COEX_TIGHT_LUT;
}
void iwl_mvm_bt_coex_vif_change(struct iwl_mvm *mvm)
{
if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_NEWBT_COEX))

3
drivers/net/wireless/iwlwifi/mvm/mvm.h
View File

@ -820,6 +820,9 @@ void iwl_mvm_bt_rssi_event(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
void iwl_mvm_bt_coex_vif_change(struct iwl_mvm *mvm);
u16 iwl_mvm_bt_coex_agg_time_limit(struct iwl_mvm *mvm,
struct ieee80211_sta *sta);
bool iwl_mvm_bt_coex_is_mimo_allowed(struct iwl_mvm *mvm,
struct ieee80211_sta *sta);
enum iwl_bt_kill_msk {
BT_KILL_MSK_DEFAULT,
BT_KILL_MSK_SCO_HID_A2DP,

45
drivers/net/wireless/iwlwifi/mvm/rs.c
View File

@ -1402,29 +1402,9 @@ static int rs_move_siso_to_other(struct iwl_mvm *mvm,
u8 update_search_tbl_counter = 0;
int ret;
switch (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading)) {
case IWL_BT_COEX_TRAFFIC_LOAD_NONE:
/* nothing */
break;
case IWL_BT_COEX_TRAFFIC_LOAD_LOW:
/* avoid switching to antenna B but allow MIMO */
if (tbl->action == IWL_SISO_SWITCH_ANTENNA &&
tbl->ant_type == ANT_A)
tbl->action = IWL_SISO_SWITCH_MIMO2;
break;
case IWL_BT_COEX_TRAFFIC_LOAD_HIGH:
case IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS:
/* A - avoid antenna B and MIMO. B - switch to A */
if (tbl->ant_type == ANT_A)
valid_tx_ant =
first_antenna(iwl_fw_valid_tx_ant(mvm->fw));
if (tbl->action == IWL_SISO_SWITCH_MIMO2 &&
!iwl_mvm_bt_coex_is_mimo_allowed(mvm, sta))
tbl->action = IWL_SISO_SWITCH_ANTENNA;
break;
default:
IWL_ERR(mvm, "Invalid BT load %d",
le32_to_cpu(mvm->last_bt_notif.bt_activity_grading));
break;
}
start_action = tbl->action;
while (1) {
@ -1519,27 +1499,6 @@ static int rs_move_mimo2_to_other(struct iwl_mvm *mvm,
u8 update_search_tbl_counter = 0;
int ret;
switch (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading)) {
case IWL_BT_COEX_TRAFFIC_LOAD_NONE:
/* nothing */
break;
case IWL_BT_COEX_TRAFFIC_LOAD_HIGH:
case IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS:
/* avoid antenna B and MIMO */
if (tbl->action != IWL_MIMO2_SWITCH_SISO_A)
tbl->action = IWL_MIMO2_SWITCH_SISO_A;
break;
case IWL_BT_COEX_TRAFFIC_LOAD_LOW:
/* avoid antenna B unless MIMO */
if (tbl->action == IWL_MIMO2_SWITCH_SISO_B)
tbl->action = IWL_MIMO2_SWITCH_SISO_A;
break;
default:
IWL_ERR(mvm, "Invalid BT load %d",
le32_to_cpu(mvm->last_bt_notif.bt_activity_grading));
break;
}
start_action = tbl->action;
while (1) {
lq_sta->action_counter++;