iwlwifi: mvm: let the firmware choose the antenna for beacons

The firmware knows better what antenna to choose.
Old firmware still need the setting, so use a flag to know
if the driver should choose the antenna or if the firmware
can do it iself.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>

diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-fw-file.h b/drivers/net/wireless/intel/iwlwifi/iwl-fw-file.h
index d2294ad..9f24f99 100644 (file)
--- a/drivers/net/wireless/intel/iwlwifi/iwl-fw-file.h
+++ b/drivers/net/wireless/intel/iwlwifi/iwl-fw-file.h
@@ -309,6 +309,8 @@ typedef unsigned int __bitwise__ iwl_ucode_tlv_capa_t;
  * @IWL_UCODE_TLV_CAPA_EXTENDED_DTS_MEASURE: extended DTS measurement
  * @IWL_UCODE_TLV_CAPA_SHORT_PM_TIMEOUTS: supports short PM timeouts
  * @IWL_UCODE_TLV_CAPA_BT_MPLUT_SUPPORT: supports bt-coex Multi-priority LUT
+ * @IWL_UCODE_TLV_CAPA_BEACON_ANT_SELECTION: firmware will decide on what
+ *     antenna the beacon should be transmitted
  *
  * @NUM_IWL_UCODE_TLV_CAPA: number of bits used
  */
@@ -336,6 +338,7 @@ enum iwl_ucode_tlv_capa {
        IWL_UCODE_TLV_CAPA_EXTENDED_DTS_MEASURE         = (__force iwl_ucode_tlv_capa_t)64,
        IWL_UCODE_TLV_CAPA_SHORT_PM_TIMEOUTS            = (__force iwl_ucode_tlv_capa_t)65,
        IWL_UCODE_TLV_CAPA_BT_MPLUT_SUPPORT             = (__force iwl_ucode_tlv_capa_t)67,
+       IWL_UCODE_TLV_CAPA_BEACON_ANT_SELECTION         = (__force iwl_ucode_tlv_capa_t)71,
 
        NUM_IWL_UCODE_TLV_CAPA
 #ifdef __CHECKER__

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c
index 5e3a758..448b9c9 100644 (file)
--- a/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c
@@ -1012,9 +1012,12 @@ static int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm,
                                                TX_CMD_FLG_BT_PRIO_POS;
        beacon_cmd.tx.tx_flags = cpu_to_le32(tx_flags);
 
-       mvm->mgmt_last_antenna_idx =
-               iwl_mvm_next_antenna(mvm, iwl_mvm_get_valid_tx_ant(mvm),
-                                    mvm->mgmt_last_antenna_idx);
+       if (!fw_has_capa(&mvm->fw->ucode_capa,
+                        IWL_UCODE_TLV_CAPA_BEACON_ANT_SELECTION)) {
+               mvm->mgmt_last_antenna_idx =
+                       iwl_mvm_next_antenna(mvm, iwl_mvm_get_valid_tx_ant(mvm),
+                                            mvm->mgmt_last_antenna_idx);
+       }
 
        beacon_cmd.tx.rate_n_flags =
                cpu_to_le32(BIT(mvm->mgmt_last_antenna_idx) <<