From: Kuan-Chung Chen <damon.chen@realtek.com>
Date: Sat, 10 Jan 2026 02:20:14 +0000 (+0800)
Subject: wifi: rtw89: support EHT GI/LTF setting
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=432b26382db2163b88db557ce91d20c18724be8a;p=thirdparty%2Fkernel%2Flinux.git

wifi: rtw89: support EHT GI/LTF setting

Add support for fixed EHT GI/LTF via nl80211.

The command example:
  iw wlan0 set bitrates eht-gi-6 0.8 eht-ltf-6 2

Signed-off-by: Kuan-Chung Chen <damon.chen@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://patch.msgid.link/20260110022019.2254969-4-pkshih@realtek.com
---

diff --git a/drivers/net/wireless/realtek/rtw89/phy.c b/drivers/net/wireless/realtek/rtw89/phy.c
index d29fbc9cb5acb..0b72d3dcf6668 100644
--- a/drivers/net/wireless/realtek/rtw89/phy.c
+++ b/drivers/net/wireless/realtek/rtw89/phy.c
@@ -281,8 +281,7 @@ static void rtw89_phy_ra_gi_ltf(struct rtw89_dev *rtwdev,
 	struct cfg80211_bitrate_mask *mask = &rtwsta_link->mask;
 	u8 band = chan->band_type;
 	enum nl80211_band nl_band = rtw89_hw_to_nl80211_band(band);
-	u8 he_ltf = mask->control[nl_band].he_ltf;
-	u8 he_gi = mask->control[nl_band].he_gi;
+	u8 ltf, gi;
 
 	*fix_giltf_en = true;
 
@@ -293,22 +292,31 @@ static void rtw89_phy_ra_gi_ltf(struct rtw89_dev *rtwdev,
 	else
 		*fix_giltf = RTW89_GILTF_2XHE08;
 
-	if (!(rtwsta_link->use_cfg_mask && link_sta->he_cap.has_he))
+	if (!rtwsta_link->use_cfg_mask)
+		return;
+
+	if (link_sta->eht_cap.has_eht) {
+		ltf = mask->control[nl_band].eht_ltf;
+		gi = mask->control[nl_band].eht_gi;
+	} else if (link_sta->he_cap.has_he) {
+		ltf = mask->control[nl_band].he_ltf;
+		gi = mask->control[nl_band].he_gi;
+	} else {
 		return;
+	}
 
-	if (he_ltf == 2 && he_gi == 2) {
+	if (ltf == 2 && gi == 2)
 		*fix_giltf = RTW89_GILTF_LGI_4XHE32;
-	} else if (he_ltf == 2 && he_gi == 0) {
+	else if (ltf == 2 && gi == 0)
 		*fix_giltf = RTW89_GILTF_SGI_4XHE08;
-	} else if (he_ltf == 1 && he_gi == 1) {
+	else if (ltf == 1 && gi == 1)
 		*fix_giltf = RTW89_GILTF_2XHE16;
-	} else if (he_ltf == 1 && he_gi == 0) {
+	else if (ltf == 1 && gi == 0)
 		*fix_giltf = RTW89_GILTF_2XHE08;
-	} else if (he_ltf == 0 && he_gi == 1) {
+	else if (ltf == 0 && gi == 1)
 		*fix_giltf = RTW89_GILTF_1XHE16;
-	} else if (he_ltf == 0 && he_gi == 0) {
+	else if (ltf == 0 && gi == 0)
 		*fix_giltf = RTW89_GILTF_1XHE08;
-	}
 }
 
 static void rtw89_phy_ra_sta_update(struct rtw89_dev *rtwdev,