iwlwifi: introduce trans_ops->stop_hw

This handler stops the HW and puts it in low power state.
It will allow to clean up the flows in the upper layers.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-trans.h b/drivers/net/wireless/iwlwifi/iwl-trans.h
index 55b5dc3b5dd6..d0b6146b0971 100644
--- a/drivers/net/wireless/iwlwifi/iwl-trans.h
+++ b/drivers/net/wireless/iwlwifi/iwl-trans.h
@@ -134,6 +134,8 @@ struct iwl_host_cmd {
 /**
  * struct iwl_trans_ops - transport specific operations
  * @start_hw: starts the HW- from that point on, the HW can send interrupts
+ * @stop_hw: stops the HW- from that point on, the HW will be in low power but
+ *      will still issue interrupt if the HW RF kill is triggered.
  * @start_device: allocates and inits all the resources for the transport
  *                layer.
  * @fw_alive: called when the fw sends alive notification
@@ -163,6 +165,7 @@ struct iwl_host_cmd {
 struct iwl_trans_ops {
 
         int (*start_hw)(struct iwl_trans *iwl_trans);
+        void (*stop_hw)(struct iwl_trans *iwl_trans);
         int (*start_device)(struct iwl_trans *trans);
         void (*fw_alive)(struct iwl_trans *trans);
         void (*stop_device)(struct iwl_trans *trans);
@@ -271,6 +274,11 @@ static inline int iwl_trans_start_hw(struct iwl_trans *trans)
         return trans->ops->start_hw(trans);
 }
 
+static inline void iwl_trans_stop_hw(struct iwl_trans *trans)
+{
+        trans->ops->stop_hw(trans);
+}
+
 static inline void iwl_trans_fw_alive(struct iwl_trans *trans)
 {
         trans->ops->fw_alive(trans);