iwlwifi: send cmd to uCode to configure valid tx antenna

In order for uCode to select the valid antennas for transmit, driver
need to configure the allowed tx antennas through host command.

The TX_ANT_CONFIGURATION_CMD should be used for 5000 series and up

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 19 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-5000.c b/drivers/net/wireless/iwlwifi/iwl-5000.c
index 75fa55db330e..68d97f50fd00 100644
--- a/drivers/net/wireless/iwlwifi/iwl-5000.c
+++ b/drivers/net/wireless/iwlwifi/iwl-5000.c
@@ -1450,6 +1450,24 @@ int iwl5000_calc_rssi(struct iwl_priv *priv,
         return max_rssi - agc - IWL49_RSSI_OFFSET;
 }
 
+static int iwl5000_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
+{
+        struct iwl_tx_ant_config_cmd tx_ant_cmd = {
+          .valid = cpu_to_le32(valid_tx_ant),
+        };
+
+        if (IWL_UCODE_API(priv->ucode_ver) > 1) {
+                IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
+                return iwl_send_cmd_pdu(priv, TX_ANT_CONFIGURATION_CMD,
+                                        sizeof(struct iwl_tx_ant_config_cmd),
+                                        &tx_ant_cmd);
+        } else {
+                IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
+                return -EOPNOTSUPP;
+        }
+}
+
+
 #define IWL5000_UCODE_GET(item)                                         \
 static u32 iwl5000_ucode_get_##item(const struct iwl_ucode_header *ucode,\
                                     u32 api_ver)                        \
@@ -1492,6 +1510,7 @@ struct iwl_hcmd_ops iwl5000_hcmd = {
         .rxon_assoc = iwl5000_send_rxon_assoc,
         .commit_rxon = iwl_commit_rxon,
         .set_rxon_chain = iwl_set_rxon_chain,
+        .set_tx_ant = iwl5000_send_tx_ant_config,
 };
 
 struct iwl_hcmd_utils_ops iwl5000_hcmd_utils = {