rtlwifi: Fix a2dp choppy while BT RSSI stays on threshold.

In this case, BTC asks to enter/leave PS mode frequently to cause A2DP
choppy.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Yan-Hsuan Chuang <yhchuang@realtek.com>
Cc: Birming Chiu <birming@realtek.com>
Cc: Shaofu <shaofu@realtek.com>
Cc: Steven Ting <steventing@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/realtek/rtlwifi/ps.c

@@ -356,7 +356,7 @@ void rtl_lps_set_psmode(struct ieee80211_hw *hw, u8 rt_psmode)
 	if (mac->link_state != MAC80211_LINKED)
 		return;
 
-	if (ppsc->dot11_psmode == rt_psmode)
+	if (ppsc->dot11_psmode == rt_psmode && rt_psmode == EACTIVE)
 		return;
 
 	/* Update power save mode configured. */
@@ -438,11 +438,13 @@ static void rtl_lps_enter_core(struct ieee80211_hw *hw)
 
 	spin_lock_irqsave(&rtlpriv->locks.lps_lock, flag);
 
-	if (ppsc->dot11_psmode == EACTIVE) {
+	/* Don't need to check (ppsc->dot11_psmode == EACTIVE), because
+	 * bt_ccoexist may ask to enter lps.
+	 * In normal case, this constraint move to rtl_lps_set_psmode().
+	 */
 	RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
 		 "Enter 802.11 power save mode...\n");
 	rtl_lps_set_psmode(hw, EAUTOPS);
-	}
 
 	spin_unlock_irqrestore(&rtlpriv->locks.lps_lock, flag);
 }

drivers/net/wireless/realtek/rtlwifi/rtl8192ee/fw.c

@@ -427,6 +427,11 @@ void rtl92ee_set_fw_pwrmode_cmd(struct ieee80211_hw *hw, u8 mode)
 	struct rtl_btc_ops *btc_ops = rtlpriv->btcoexist.btc_ops;
 	bool bt_ctrl_lps = (rtlpriv->cfg->ops->get_btc_status() ?
 			    btc_ops->btc_is_bt_ctrl_lps(rtlpriv) : false);
+	bool bt_lps_on = (rtlpriv->cfg->ops->get_btc_status() ?
+			  btc_ops->btc_is_bt_lps_on(rtlpriv) : false);
+
+	if (bt_ctrl_lps)
+		mode = (bt_lps_on ? FW_PS_MIN_MODE : FW_PS_ACTIVE_MODE);
 
 	RT_TRACE(rtlpriv, COMP_POWER, DBG_DMESG, "FW LPS mode = %d (coex:%d)\n",
 		 mode, bt_ctrl_lps);
@@ -482,8 +487,9 @@ void rtl92ee_set_fw_pwrmode_cmd(struct ieee80211_hw *hw, u8 mode)
 	SET_H2CCMD_PWRMODE_PARM_MODE(u1_h2c_set_pwrmode, ((mode) ? 1 : 0));
 	SET_H2CCMD_PWRMODE_PARM_RLBM(u1_h2c_set_pwrmode, rlbm);
 	SET_H2CCMD_PWRMODE_PARM_SMART_PS(u1_h2c_set_pwrmode,
-					 (rtlpriv->mac80211.p2p) ?
-					 ppsc->smart_ps : 1);
+					 bt_ctrl_lps ? 0 :
+					 ((rtlpriv->mac80211.p2p) ?
+					  ppsc->smart_ps : 1));
 	SET_H2CCMD_PWRMODE_PARM_AWAKE_INTERVAL(u1_h2c_set_pwrmode,
 					       awake_intvl);
 	SET_H2CCMD_PWRMODE_PARM_ALL_QUEUE_UAPSD(u1_h2c_set_pwrmode, 0);

drivers/net/wireless/realtek/rtlwifi/rtl8723be/fw.c

@@ -245,6 +245,11 @@ void rtl8723be_set_fw_pwrmode_cmd(struct ieee80211_hw *hw, u8 mode)
 	struct rtl_btc_ops *btc_ops = rtlpriv->btcoexist.btc_ops;
 	bool bt_ctrl_lps = (rtlpriv->cfg->ops->get_btc_status() ?
 			    btc_ops->btc_is_bt_ctrl_lps(rtlpriv) : false);
+	bool bt_lps_on = (rtlpriv->cfg->ops->get_btc_status() ?
+			  btc_ops->btc_is_bt_lps_on(rtlpriv) : false);
+
+	if (bt_ctrl_lps)
+		mode = (bt_lps_on ? FW_PS_MIN_MODE : FW_PS_ACTIVE_MODE);
 
 	RT_TRACE(rtlpriv, COMP_POWER, DBG_DMESG, "FW LPS mode = %d (coex:%d)\n",
 		 mode, bt_ctrl_lps);
@@ -300,8 +305,7 @@ void rtl8723be_set_fw_pwrmode_cmd(struct ieee80211_hw *hw, u8 mode)
 	SET_H2CCMD_PWRMODE_PARM_MODE(u1_h2c_set_pwrmode, ((mode) ? 1 : 0));
 	SET_H2CCMD_PWRMODE_PARM_RLBM(u1_h2c_set_pwrmode, rlbm);
 	SET_H2CCMD_PWRMODE_PARM_SMART_PS(u1_h2c_set_pwrmode,
-					 (rtlpriv->mac80211.p2p) ?
-					  ppsc->smart_ps : 1);
+					 bt_ctrl_lps ? 0 : ppsc->smart_ps);
 	SET_H2CCMD_PWRMODE_PARM_AWAKE_INTERVAL(u1_h2c_set_pwrmode,
 					       awake_intvl);
 	SET_H2CCMD_PWRMODE_PARM_ALL_QUEUE_UAPSD(u1_h2c_set_pwrmode, 0);

drivers/net/wireless/realtek/rtlwifi/rtl8821ae/fw.c

@@ -494,6 +494,11 @@ void rtl8821ae_set_fw_pwrmode_cmd(struct ieee80211_hw *hw, u8 mode)
 	struct rtl_btc_ops *btc_ops = rtlpriv->btcoexist.btc_ops;
 	bool bt_ctrl_lps = (rtlpriv->cfg->ops->get_btc_status() ?
 			    btc_ops->btc_is_bt_ctrl_lps(rtlpriv) : false);
+	bool bt_lps_on = (rtlpriv->cfg->ops->get_btc_status() ?
+			  btc_ops->btc_is_bt_lps_on(rtlpriv) : false);
+
+	if (bt_ctrl_lps)
+		mode = (bt_lps_on ? FW_PS_MIN_MODE : FW_PS_ACTIVE_MODE);
 
 	RT_TRACE(rtlpriv, COMP_POWER, DBG_DMESG, "FW LPS mode = %d (coex:%d)\n",
 		 mode, bt_ctrl_lps);
@@ -549,8 +554,9 @@ void rtl8821ae_set_fw_pwrmode_cmd(struct ieee80211_hw *hw, u8 mode)
 	SET_H2CCMD_PWRMODE_PARM_MODE(u1_h2c_set_pwrmode, ((mode) ? 1 : 0));
 	SET_H2CCMD_PWRMODE_PARM_RLBM(u1_h2c_set_pwrmode, rlbm);
 	SET_H2CCMD_PWRMODE_PARM_SMART_PS(u1_h2c_set_pwrmode,
-					 (rtlpriv->mac80211.p2p) ?
-					 ppsc->smart_ps : 1);
+					 bt_ctrl_lps ? 0 :
+					 ((rtlpriv->mac80211.p2p) ?
+					  ppsc->smart_ps : 1));
 	SET_H2CCMD_PWRMODE_PARM_AWAKE_INTERVAL(u1_h2c_set_pwrmode,
 					       awake_intvl);
 	SET_H2CCMD_PWRMODE_PARM_ALL_QUEUE_UAPSD(u1_h2c_set_pwrmode, 0);