recipes-wifi/linux-mt76/files/patches-3.x/0126-mtk-mt76-mt7996-trigger-channel-calibration-for-DFS-.patch

From 1dfd2813ec62c27890085927164b4613284c1f12 Mon Sep 17 00:00:00 2001
From: StanleyYP Wang <StanleyYP.Wang@mediatek.com>
Date: Fri, 17 May 2024 14:49:50 +0800
Subject: [PATCH 126/193] mtk: mt76: mt7996: trigger channel calibration for
 DFS link after sta is associated

Trigger channel calibration (set channel with switch reason = NORMAL)
for DFS link after STA is associated.
Without this patch, 5G link might have high PER during T.P. test

Change-Id: I65ed79767049f4fdd31ac95a93496d1ccdc39699
Signed-off-by: StanleyYP Wang <StanleyYP.Wang@mediatek.com>
---
 mt7996/main.c     | 15 +++++++++++----
 mt7996/mcu.c      |  7 ++++---
 mt7996/mt7996.h   |  2 +-
 mt7996/testmode.c |  4 ++--
 4 files changed, 18 insertions(+), 10 deletions(-)

diff --git a/mt7996/main.c b/mt7996/main.c
index bdb1fab..161b5cb 100644
--- a/mt7996/main.c
+++ b/mt7996/main.c
@@ -82,12 +82,12 @@ int mt7996_run(struct ieee80211_hw *hw)
 		if (ret)
 			goto out;
 
-		ret = mt7996_mcu_set_chan_info(phy, UNI_CHANNEL_RX_PATH);
+		ret = mt7996_mcu_set_chan_info(phy, UNI_CHANNEL_RX_PATH, false);
 		if (ret)
 			goto out;
 
 		/* set a parking channel */
-		ret = mt7996_mcu_set_chan_info(phy, UNI_CHANNEL_SWITCH);
+		ret = mt7996_mcu_set_chan_info(phy, UNI_CHANNEL_SWITCH, false);
 		if (ret)
 			goto out;
 
@@ -554,11 +554,11 @@ static int __mt7996_set_channel(struct mt7996_phy *phy,
 		goto out;
 	}
 
-	ret = mt7996_mcu_set_chan_info(phy, UNI_CHANNEL_SWITCH);
+	ret = mt7996_mcu_set_chan_info(phy, UNI_CHANNEL_SWITCH, false);
 	if (ret)
 		goto out;
 
-	ret = mt7996_mcu_set_chan_info(phy, UNI_CHANNEL_RX_PATH);
+	ret = mt7996_mcu_set_chan_info(phy, UNI_CHANNEL_RX_PATH, false);
 	if (ret)
 		goto out;
 
@@ -2735,6 +2735,13 @@ mt7996_event_callback(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 				next_time = min(next_time,
 						MT7996_MAX_BEACON_LOSS *
 						conf->beacon_int);
+
+				/* trigger calibration for DFS link */
+				if (!cfg80211_reg_can_beacon(hw->wiphy,
+							     &mconf->chanctx->chandef,
+							     NL80211_IFTYPE_AP))
+					mt7996_mcu_set_chan_info(phy, UNI_CHANNEL_SWITCH,
+								 true);
 			}
 
 			ieee80211_queue_delayed_work(hw, &mvif->beacon_mon_work,
diff --git a/mt7996/mcu.c b/mt7996/mcu.c
index 1f89c5f..29dc95b 100644
--- a/mt7996/mcu.c
+++ b/mt7996/mcu.c
@@ -4405,7 +4405,7 @@ int mt7996_mcu_rdd_background_enable(struct mt7996_phy *phy,
 				  0, region);
 }
 
-int mt7996_mcu_set_chan_info(struct mt7996_phy *phy, u16 tag)
+int mt7996_mcu_set_chan_info(struct mt7996_phy *phy, u16 tag, bool sta)
 {
 	static const u8 ch_band[] = {
 		[NL80211_BAND_2GHZ] = 0,
@@ -4416,6 +4416,8 @@ int mt7996_mcu_set_chan_info(struct mt7996_phy *phy, u16 tag)
 	struct cfg80211_chan_def *chandef = &phy->mt76->chandef;
 	int freq1 = chandef->center_freq1;
 	u8 band_idx = phy->mt76->band_idx;
+	enum nl80211_iftype iftype = sta ? NL80211_IFTYPE_STATION :
+					   NL80211_IFTYPE_AP;
 	struct {
 		/* fixed field */
 		u8 __rsv[4];
@@ -4456,8 +4458,7 @@ int mt7996_mcu_set_chan_info(struct mt7996_phy *phy, u16 tag)
 		 phy->mt76->hw->conf.flags & IEEE80211_CONF_IDLE ||
 		 phy->scan_chan)
 		req.switch_reason = CH_SWITCH_SCAN_BYPASS_DPD;
-	else if (!cfg80211_reg_can_beacon(phy->mt76->hw->wiphy, chandef,
-					  NL80211_IFTYPE_AP))
+	else if (!cfg80211_reg_can_beacon(phy->mt76->hw->wiphy, chandef, iftype))
 		req.switch_reason = CH_SWITCH_DFS;
 	else
 		req.switch_reason = CH_SWITCH_NORMAL;
diff --git a/mt7996/mt7996.h b/mt7996/mt7996.h
index 21be14d..07c72d2 100644
--- a/mt7996/mt7996.h
+++ b/mt7996/mt7996.h
@@ -1058,7 +1058,7 @@ int mt7996_mcu_add_rate_ctrl(struct mt7996_dev *dev,
 int mt7996_mcu_add_mld_sta(struct mt7996_dev *dev, struct ieee80211_vif *vif,
 			   struct ieee80211_sta *sta, unsigned long add);
 int mt7996_set_channel(struct mt7996_phy *phy, struct cfg80211_chan_def *chandef);
-int mt7996_mcu_set_chan_info(struct mt7996_phy *phy, u16 tag);
+int mt7996_mcu_set_chan_info(struct mt7996_phy *phy, u16 tag, bool sta);
 int mt7996_mcu_set_tx(struct mt7996_dev *dev, struct mt7996_bss_conf *mconf);
 int mt7996_mcu_set_fixed_rate_ctrl(struct mt7996_dev *dev,
 				   void *data, u16 version);
diff --git a/mt7996/testmode.c b/mt7996/testmode.c
index 799e443..c68619c 100644
--- a/mt7996/testmode.c
+++ b/mt7996/testmode.c
@@ -550,7 +550,7 @@ mt7996_tm_dpd_prek_send_req(struct mt7996_phy *phy, struct mt7996_tm_req *req,
 
 		/* set channel switch reason */
 		mphy->hw->conf.flags |= IEEE80211_CONF_OFFCHANNEL;
-		mt7996_mcu_set_chan_info(phy, UNI_CHANNEL_SWITCH);
+		mt7996_mcu_set_chan_info(phy, UNI_CHANNEL_SWITCH, false);
 
 		ret = mt76_mcu_send_msg(&dev->mt76, MCU_WM_UNI_CMD(TESTMODE_CTRL), req,
 					sizeof(*req), false);
@@ -564,7 +564,7 @@ out:
 	mphy->hw->conf.flags &= ~IEEE80211_CONF_OFFCHANNEL;
 	memcpy(chandef, &chandef_backup, sizeof(struct cfg80211_chan_def));
 	memcpy(chandef->chan, &chan_backup, sizeof(struct ieee80211_channel));
-	mt7996_mcu_set_chan_info(phy, UNI_CHANNEL_SWITCH);
+	mt7996_mcu_set_chan_info(phy, UNI_CHANNEL_SWITCH, false);
 
 	return ret;
 }
-- 
2.45.2