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From: Ping-Ke Shih <pkshih@realtek.com>
To: <linux-wireless@vger.kernel.org>
Subject: [PATCH] wifi: rtw89: correct hardware value of nominal packet padding for WiFi 7 chips
Date: Fri, 17 May 2024 09:36:39 +0800
Message-ID: <20240517013639.11643-1-pkshih@realtek.com>
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The hardware value of 3 for WiFi 7 chips is padding 16 or 20us selected
by hardware automatically. Correct the value to resolve interoperability
problem. Also define enum to be more readable.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
---
 drivers/net/wireless/realtek/rtw89/core.h |  7 +++++++
 drivers/net/wireless/realtek/rtw89/fw.c   | 12 ++++++------
 2 files changed, 13 insertions(+), 6 deletions(-)

diff --git a/drivers/net/wireless/realtek/rtw89/core.h b/drivers/net/wireless/realtek/rtw89/core.h
index c0f2afb4888a..523ea9f5e6b1 100644
--- a/drivers/net/wireless/realtek/rtw89/core.h
+++ b/drivers/net/wireless/realtek/rtw89/core.h
@@ -884,6 +884,13 @@ enum rtw89_ps_mode {
 #define RTW89_BYR_BW_NUM (RTW89_CHANNEL_WIDTH_320 + 1)
 #define RTW89_PPE_BW_NUM (RTW89_CHANNEL_WIDTH_320 + 1)
 
+enum rtw89_pe_duration {
+	RTW89_PE_DURATION_0 = 0,
+	RTW89_PE_DURATION_8 = 1,
+	RTW89_PE_DURATION_16 = 2,
+	RTW89_PE_DURATION_16_20 = 3,
+};
+
 enum rtw89_ru_bandwidth {
 	RTW89_RU26 = 0,
 	RTW89_RU52 = 1,
diff --git a/drivers/net/wireless/realtek/rtw89/fw.c b/drivers/net/wireless/realtek/rtw89/fw.c
index f5cd06c35982..1ea2b662fc89 100644
--- a/drivers/net/wireless/realtek/rtw89/fw.c
+++ b/drivers/net/wireless/realtek/rtw89/fw.c
@@ -2752,11 +2752,11 @@ static void __get_sta_he_pkt_padding(struct rtw89_dev *rtwdev,
 		ppe8 = (ppe >> sh) & IEEE80211_PPE_THRES_NSS_MASK;
 
 		if (ppe16 != 7 && ppe8 == 7)
-			pads[i] = 2;
+			pads[i] = RTW89_PE_DURATION_16;
 		else if (ppe8 != 7)
-			pads[i] = 1;
+			pads[i] = RTW89_PE_DURATION_8;
 		else
-			pads[i] = 0;
+			pads[i] = RTW89_PE_DURATION_0;
 	}
 }
 
@@ -2889,11 +2889,11 @@ static void __get_sta_eht_pkt_padding(struct rtw89_dev *rtwdev,
 		ppe8 = (ppe >> sh) & IEEE80211_PPE_THRES_NSS_MASK;
 
 		if (ppe16 != 7 && ppe8 == 7)
-			pads[i] = 2;
+			pads[i] = RTW89_PE_DURATION_16_20;
 		else if (ppe8 != 7)
-			pads[i] = 1;
+			pads[i] = RTW89_PE_DURATION_8;
 		else
-			pads[i] = 0;
+			pads[i] = RTW89_PE_DURATION_0;
 	}
 }
 
-- 
2.25.1