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From:   Ping-Ke Shih <pkshih@realtek.com>
To:     <kvalo@kernel.org>
CC:     <phhuang@realtek.com>, <linux-wireless@vger.kernel.org>
Subject: [PATCH] wifi: rtw89: refine 6 GHz scanning dwell time
Date:   Wed, 14 Dec 2022 17:19:52 +0800
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From: Po-Hao Huang <phhuang@realtek.com>

Reduce dwell time to improve scan duration in 6 GHz. This is required
for scan requests that does not include RNR parsing and does full
channel scan.

Signed-off-by: Po-Hao Huang <phhuang@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
---
 drivers/net/wireless/realtek/rtw89/fw.c | 5 +++--
 drivers/net/wireless/realtek/rtw89/fw.h | 1 +
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/realtek/rtw89/fw.c b/drivers/net/wireless/realtek/rtw89/fw.c
index de1f23779fc62..3655dfd4ab7ea 100644
--- a/drivers/net/wireless/realtek/rtw89/fw.c
+++ b/drivers/net/wireless/realtek/rtw89/fw.c
@@ -2738,7 +2738,7 @@ static void rtw89_hw_scan_add_chan(struct rtw89_dev *rtwdev, int chan_type,
 		if (ssid_num == 1 && req->ssids[0].ssid_len == 0) {
 			ch_info->tx_pkt = false;
 			if (!req->duration_mandatory)
-				ch_info->period -= RTW89_DWELL_TIME;
+				ch_info->period -= RTW89_DWELL_TIME_6G;
 		}
 	}
 
@@ -2791,7 +2791,8 @@ static int rtw89_hw_scan_add_chan_list(struct rtw89_dev *rtwdev,
 		if (req->duration_mandatory)
 			ch_info->period = req->duration;
 		else if (channel->band == NL80211_BAND_6GHZ)
-			ch_info->period = RTW89_CHANNEL_TIME_6G + RTW89_DWELL_TIME;
+			ch_info->period = RTW89_CHANNEL_TIME_6G +
+					  RTW89_DWELL_TIME_6G;
 		else
 			ch_info->period = RTW89_CHANNEL_TIME;
 
diff --git a/drivers/net/wireless/realtek/rtw89/fw.h b/drivers/net/wireless/realtek/rtw89/fw.h
index 4d2f9ea9e0022..4ff168937cb91 100644
--- a/drivers/net/wireless/realtek/rtw89/fw.h
+++ b/drivers/net/wireless/realtek/rtw89/fw.h
@@ -203,6 +203,7 @@ struct rtw89_h2creg_sch_tx_en {
 #define RTW89_DFS_CHAN_TIME 105
 #define RTW89_OFF_CHAN_TIME 100
 #define RTW89_DWELL_TIME 20
+#define RTW89_DWELL_TIME_6G 10
 #define RTW89_SCAN_WIDTH 0
 #define RTW89_SCANOFLD_MAX_SSID 8
 #define RTW89_SCANOFLD_MAX_IE_LEN 512
-- 
2.25.1