iwlwifi: mvm: implement UMAC scan API

This API uses second CPU scan commands, and can support multiple
simultaneous scans.

Adding the new API, and adding new mechanisms to deal with up to
8 simultaneous scans instead of the old scan status.

New scan API requires scan configuration for default scan parameters,
adding it in _up flow. Also updating scan configuration after updating
valid scan antennas via debugfs.

Signed-off-by: David Spinadel <david.spinadel@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/drivers/net/wireless/iwlwifi/mvm/debugfs.c b/drivers/net/wireless/iwlwifi/mvm/debugfs.c
index 51b7116965ed..8212b00096f9 100644
--- a/drivers/net/wireless/iwlwifi/mvm/debugfs.c
+++ b/drivers/net/wireless/iwlwifi/mvm/debugfs.c
@@ -936,7 +936,11 @@ iwl_dbgfs_scan_ant_rxchain_write(struct iwl_mvm *mvm, char *buf,
         if (scan_rx_ant & ~mvm->fw->valid_rx_ant)
                 return -EINVAL;
 
-        mvm->scan_rx_ant = scan_rx_ant;
+        if (mvm->scan_rx_ant != scan_rx_ant) {
+                mvm->scan_rx_ant = scan_rx_ant;
+                if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)
+                        iwl_mvm_config_scan(mvm);
+        }
 
         return count;
 }