rtlwifi: Implement a common rtl_phy_scan_operation_backup() routine

Several of the drivers supported by rtlwifi individually implement the same
routine that supports scans. As a first step, create this routine in
driver rtlwifi.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

2 files changed, 30 insertions, 0 deletions

diff --git a/drivers/net/wireless/rtlwifi/base.c b/drivers/net/wireless/rtlwifi/base.c
index 8bb4a9a01a18..9a78e3daf742 100644
--- a/drivers/net/wireless/rtlwifi/base.c
+++ b/drivers/net/wireless/rtlwifi/base.c
@@ -1613,6 +1613,35 @@ err_free:
 }
 EXPORT_SYMBOL(rtl_send_smps_action);
 
+void rtl_phy_scan_operation_backup(struct ieee80211_hw *hw, u8 operation)
+{
+        struct rtl_priv *rtlpriv = rtl_priv(hw);
+        struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
+        enum io_type iotype;
+
+        if (!is_hal_stop(rtlhal)) {
+                switch (operation) {
+                case SCAN_OPT_BACKUP:
+                        iotype = IO_CMD_PAUSE_DM_BY_SCAN;
+                        rtlpriv->cfg->ops->set_hw_reg(hw,
+                                                      HW_VAR_IO_CMD,
+                                                      (u8 *)&iotype);
+                        break;
+                case SCAN_OPT_RESTORE:
+                        iotype = IO_CMD_RESUME_DM_BY_SCAN;
+                        rtlpriv->cfg->ops->set_hw_reg(hw,
+                                                      HW_VAR_IO_CMD,
+                                                      (u8 *)&iotype);
+                        break;
+                default:
+                        RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
+                                 "Unknown Scan Backup operation.\n");
+                        break;
+                }
+        }
+}
+EXPORT_SYMBOL(rtl_phy_scan_operation_backup);
+
 /* There seem to be issues in mac80211 regarding when del ba frames can be
  * received. As a work around, we make a fake del_ba if we receive a ba_req;
  * however, rx_agg was opened to let mac80211 release some ba related
diff --git a/drivers/net/wireless/rtlwifi/base.h b/drivers/net/wireless/rtlwifi/base.h
index c07f114e7d1b..0cd07420777a 100644
--- a/drivers/net/wireless/rtlwifi/base.h
+++ b/drivers/net/wireless/rtlwifi/base.h
@@ -152,5 +152,6 @@ int rtlwifi_rate_mapping(struct ieee80211_hw *hw,
 bool rtl_tx_mgmt_proc(struct ieee80211_hw *hw, struct sk_buff *skb);
 struct sk_buff *rtl_make_del_ba(struct ieee80211_hw *hw,
                                 u8 *sa, u8 *bssid, u16 tid);
+void rtl_phy_scan_operation_backup(struct ieee80211_hw *hw, u8 operation);
 
 #endif