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d152188906
Introducing SoC specific RSSI base value to fix the low RSSI issue on MT7620. With this fix[1], the RSSI value reported by MT7620 will increase by 10 dB. [1] https://lore.kernel.org/linux-wireless/TYAP286MB031571CDB146C414A908A66DBCFEA@TYAP286MB0315.JPNP286.PROD.OUTLOOK.COM/ Fixes: https://github.com/openwrt/openwrt/issues/11036 Signed-off-by: Shiji Yang <yangshiji66@qq.com>
40 lines
1.7 KiB
Diff
40 lines
1.7 KiB
Diff
From: Shiji Yang <yangshiji66@outlook.com>
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Date: Sat, 23 Sep 2023 07:51:39 +0800
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Subject: [PATCH] wifi: rt2x00: fix MT7620 low RSSI issue
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On Mediatek vendor driver[1], MT7620 (RT6352) uses different RSSI
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base value '-2' compared to the other RT2x00 chips. This patch
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introduces the SoC specific base value to fix the low RSSI value
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reports on MT7620.
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[1] Found on MT76x2E_MT7620_LinuxAP_V3.0.4.0_P3 ConvertToRssi().
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Signed-off-by: Shiji Yang <yangshiji66@outlook.com>
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---
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drivers/net/wireless/ralink/rt2x00/rt2800lib.c | 7 ++++---
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1 file changed, 4 insertions(+), 3 deletions(-)
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--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
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+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
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@@ -875,6 +875,7 @@ static int rt2800_agc_to_rssi(struct rt2
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s8 rssi0 = rt2x00_get_field32(rxwi_w2, RXWI_W2_RSSI0);
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s8 rssi1 = rt2x00_get_field32(rxwi_w2, RXWI_W2_RSSI1);
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s8 rssi2 = rt2x00_get_field32(rxwi_w2, RXWI_W2_RSSI2);
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+ s8 base_val = rt2x00_rt(rt2x00dev, RT6352) ? -2 : -12;
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u16 eeprom;
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u8 offset0;
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u8 offset1;
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@@ -899,9 +900,9 @@ static int rt2800_agc_to_rssi(struct rt2
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* If the value in the descriptor is 0, it is considered invalid
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* and the default (extremely low) rssi value is assumed
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*/
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- rssi0 = (rssi0) ? (-12 - offset0 - rt2x00dev->lna_gain - rssi0) : -128;
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- rssi1 = (rssi1) ? (-12 - offset1 - rt2x00dev->lna_gain - rssi1) : -128;
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- rssi2 = (rssi2) ? (-12 - offset2 - rt2x00dev->lna_gain - rssi2) : -128;
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+ rssi0 = (rssi0) ? (base_val - offset0 - rt2x00dev->lna_gain - rssi0) : -128;
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+ rssi1 = (rssi1) ? (base_val - offset1 - rt2x00dev->lna_gain - rssi1) : -128;
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+ rssi2 = (rssi2) ? (base_val - offset2 - rt2x00dev->lna_gain - rssi2) : -128;
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/*
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* mac80211 only accepts a single RSSI value. Calculating the
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