[PATCH AUTOSEL 5.0 05/98] mt76: mt76x2: fix external LNA gain settings

[Sasha Levin]

From: Felix Fietkau <n...@nbd.name>

[ Upstream commit 45a042e3026824a7e910db7a4dd38fef0540b902 ]

Devices with external LNA need different values for AGC registers 8 and 9

Signed-off-by: Felix Fietkau <n...@nbd.name>
Signed-off-by: Sasha Levin (Microsoft) <sas...@kernel.org>
---
 drivers/net/wireless/mediatek/mt76/mt76x2/phy.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt76x2/phy.c 
b/drivers/net/wireless/mediatek/mt76/mt76x2/phy.c
index c9634a774705..11167b7af668 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76x2/phy.c
+++ b/drivers/net/wireless/mediatek/mt76/mt76x2/phy.c
@@ -260,10 +260,15 @@ mt76x2_phy_set_gain_val(struct mt76x02_dev *dev)
        gain_val[0] = dev->cal.agc_gain_cur[0] - dev->cal.agc_gain_adjust;
        gain_val[1] = dev->cal.agc_gain_cur[1] - dev->cal.agc_gain_adjust;
 
-       if (dev->mt76.chandef.width >= NL80211_CHAN_WIDTH_40)
+       val = 0x1836 << 16;
+       if (!mt76x2_has_ext_lna(dev) &&
+           dev->mt76.chandef.width >= NL80211_CHAN_WIDTH_40)
                val = 0x1e42 << 16;
-       else
-               val = 0x1836 << 16;
+
+       if (mt76x2_has_ext_lna(dev) &&
+           dev->mt76.chandef.chan->band == NL80211_BAND_2GHZ &&
+           dev->mt76.chandef.width < NL80211_CHAN_WIDTH_40)
+               val = 0x0f36 << 16;
 
        val |= 0xf8;
 
-- 
2.19.1