| Message ID | 20230919194747.31647-1-nbd@nbd.name |
|---|---|
| State | New |
| Headers | show |
| Series | [wireless] wifi: mt76: mt76x02: fix MT76x0 external LNA gain handling | expand |
Felix Fietkau <nbd@nbd.name> writes: > On MT76x0, LNA gain should be applied for both external and internal LNA. > On MT76x2, LNA gain should be treated as 0 for external LNA. > Move the LNA type based logic to mt76x2 in order to fix mt76x0. > > Fixes: 2daa67588f34 ("mt76x0: unify lna_gain parsing") > Reported-by: Shiji Yang <yangshiji66@outlook.com> > Signed-off-by: Felix Fietkau <nbd@nbd.name> I assigned this to me on patchwork.
Felix Fietkau <nbd@nbd.name> wrote: > On MT76x0, LNA gain should be applied for both external and internal LNA. > On MT76x2, LNA gain should be treated as 0 for external LNA. > Move the LNA type based logic to mt76x2 in order to fix mt76x0. > > Fixes: 2daa67588f34 ("mt76x0: unify lna_gain parsing") > Reported-by: Shiji Yang <yangshiji66@outlook.com> > Signed-off-by: Felix Fietkau <nbd@nbd.name> Patch applied to wireless.git, thanks. 684e45e120b8 wifi: mt76: mt76x02: fix MT76x0 external LNA gain handling
diff --git a/drivers/net/wireless/mediatek/mt76/mt76x02_eeprom.c b/drivers/net/wireless/mediatek/mt76/mt76x02_eeprom.c index 0acabba2d1a5..5d402cf2951c 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76x02_eeprom.c +++ b/drivers/net/wireless/mediatek/mt76/mt76x02_eeprom.c @@ -131,15 +131,8 @@ u8 mt76x02_get_lna_gain(struct mt76x02_dev *dev, s8 *lna_2g, s8 *lna_5g, struct ieee80211_channel *chan) { - u16 val; u8 lna; - val = mt76x02_eeprom_get(dev, MT_EE_NIC_CONF_1); - if (val & MT_EE_NIC_CONF_1_LNA_EXT_2G) - *lna_2g = 0; - if (val & MT_EE_NIC_CONF_1_LNA_EXT_5G) - memset(lna_5g, 0, sizeof(s8) * 3); - if (chan->band == NL80211_BAND_2GHZ) lna = *lna_2g; else if (chan->hw_value <= 64) diff --git a/drivers/net/wireless/mediatek/mt76/mt76x2/eeprom.c b/drivers/net/wireless/mediatek/mt76/mt76x2/eeprom.c index d5809408d1d3..8c01855885ce 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76x2/eeprom.c +++ b/drivers/net/wireless/mediatek/mt76/mt76x2/eeprom.c @@ -256,7 +256,8 @@ void mt76x2_read_rx_gain(struct mt76x02_dev *dev) struct ieee80211_channel *chan = dev->mphy.chandef.chan; int channel = chan->hw_value; s8 lna_5g[3], lna_2g; - u8 lna; + bool use_lna; + u8 lna = 0; u16 val; if (chan->band == NL80211_BAND_2GHZ) @@ -275,7 +276,15 @@ void mt76x2_read_rx_gain(struct mt76x02_dev *dev) dev->cal.rx.mcu_gain |= (lna_5g[1] & 0xff) << 16; dev->cal.rx.mcu_gain |= (lna_5g[2] & 0xff) << 24; - lna = mt76x02_get_lna_gain(dev, &lna_2g, lna_5g, chan); + val = mt76x02_eeprom_get(dev, MT_EE_NIC_CONF_1); + if (chan->band == NL80211_BAND_2GHZ) + use_lna = !(val & MT_EE_NIC_CONF_1_LNA_EXT_2G); + else + use_lna = !(val & MT_EE_NIC_CONF_1_LNA_EXT_5G); + + if (use_lna) + lna = mt76x02_get_lna_gain(dev, &lna_2g, lna_5g, chan); + dev->cal.rx.lna_gain = mt76x02_sign_extend(lna, 8); } EXPORT_SYMBOL_GPL(mt76x2_read_rx_gain);
On MT76x0, LNA gain should be applied for both external and internal LNA. On MT76x2, LNA gain should be treated as 0 for external LNA. Move the LNA type based logic to mt76x2 in order to fix mt76x0. Fixes: 2daa67588f34 ("mt76x0: unify lna_gain parsing") Reported-by: Shiji Yang <yangshiji66@outlook.com> Signed-off-by: Felix Fietkau <nbd@nbd.name> --- drivers/net/wireless/mediatek/mt76/mt76x02_eeprom.c | 7 ------- drivers/net/wireless/mediatek/mt76/mt76x2/eeprom.c | 13 +++++++++++-- 2 files changed, 11 insertions(+), 9 deletions(-)