iwlwifi: add rf information in rate_scale debugfs command

Adding more Radio information when displaying
rate_scale_table. This can help to understand how many antenna and the
current RF condition such as SISO, MIMO2, MIMO3.

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, 11 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-rs.c b/drivers/net/wireless/iwlwifi/iwl-agn-rs.c
index 039ad5769d36..9bcebf2f4607 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-rs.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-rs.c
@@ -2527,6 +2527,7 @@ static ssize_t rs_sta_dbgfs_scale_table_read(struct file *file,
 
         struct iwl_lq_sta *lq_sta = file->private_data;
         struct iwl_priv *priv;
+        struct iwl_scale_tbl_info *tbl = &(lq_sta->lq_info[lq_sta->active_tbl]);
 
         priv = lq_sta->drv;
         buff = kmalloc(1024, GFP_KERNEL);
@@ -2543,6 +2544,16 @@ static ssize_t rs_sta_dbgfs_scale_table_read(struct file *file,
             (priv->hw_params.valid_tx_ant & ANT_A) ? "ANT_A," : "",
             (priv->hw_params.valid_tx_ant & ANT_B) ? "ANT_B," : "",
             (priv->hw_params.valid_tx_ant & ANT_C) ? "ANT_C" : "");
+        desc += sprintf(buff+desc, "lq type %s\n",
+           (is_legacy(tbl->lq_type)) ? "legacy" : "HT");
+        if (is_Ht(tbl->lq_type)) {
+                desc += sprintf(buff+desc, " %s",
+                   (is_siso(tbl->lq_type)) ? "SISO" :
+                   ((is_mimo2(tbl->lq_type)) ? "MIMO2" : "MIMO3"));
+                   desc += sprintf(buff+desc, " %s",
+                   (tbl->is_fat) ? "40MHz" : "20MHz");
+                desc += sprintf(buff+desc, " %s\n", (tbl->is_SGI) ? "SGI" : "");
+        }
         desc += sprintf(buff+desc, "general:"
                 "flags=0x%X mimo-d=%d s-ant0x%x d-ant=0x%x\n",
                 lq_sta->lq.general_params.flags,