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mt76x0: pci: introduce mt76x0_phy_calirate routine

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Add mt76x0_phy_calirate routine in order to perform
phy calibration for mt76x0e devices.

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Lorenzo Bianconi 2018-10-12 12:16:20 +02:00 committed by Felix Fietkau
parent 3eaf05de1b
commit 9aec146d0f
4 changed files with 55 additions and 3 deletions
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3
drivers/net/wireless/mediatek/mt76/mt76x0/mcu.h
View File

@ -39,6 +39,9 @@ enum mcu_calibrate {
MCU_CAL_TXDCOC,
MCU_CAL_RX_GROUP_DELAY,
MCU_CAL_TX_GROUP_DELAY,
MCU_CAL_VCO,
MCU_CAL_NO_SIGNAL = 0xfe,
MCU_CAL_FULL = 0xff,
};
int mt76x0e_mcu_init(struct mt76x02_dev *dev);

1
drivers/net/wireless/mediatek/mt76/mt76x0/mt76x0.h
View File

@ -72,6 +72,7 @@ int mt76x0_phy_set_channel(struct mt76x02_dev *dev,
struct cfg80211_chan_def *chandef);
void mt76x0_phy_recalibrate_after_assoc(struct mt76x02_dev *dev);
void mt76x0_phy_set_txpower(struct mt76x02_dev *dev);
void mt76x0_phy_calibrate(struct mt76x02_dev *dev, bool power_on);
/* MAC */
void mt76x0_mac_work(struct work_struct *work);

1
drivers/net/wireless/mediatek/mt76/mt76x0/pci.c
View File

@ -28,6 +28,7 @@ static int mt76x0e_start(struct ieee80211_hw *hw)
mutex_lock(&dev->mt76.mutex);
mt76x02_mac_start(dev);
mt76x0_phy_calibrate(dev, true);
ieee80211_queue_delayed_work(dev->mt76.hw, &dev->mac_work,
MT_CALIBRATE_INTERVAL);
ieee80211_queue_delayed_work(dev->mt76.hw, &dev->cal_work,

53
drivers/net/wireless/mediatek/mt76/mt76x0/phy.c
View File

@ -581,6 +581,48 @@ void mt76x0_phy_set_txpower(struct mt76x02_dev *dev)
mt76x02_phy_set_txpower(dev, info[0], info[1]);
}
void mt76x0_phy_calibrate(struct mt76x02_dev *dev, bool power_on)
{
struct ieee80211_channel *chan = dev->mt76.chandef.chan;
u32 val, tx_alc, reg_val;
if (power_on) {
mt76x02_mcu_calibrate(dev, MCU_CAL_R, 0, false);
mt76x02_mcu_calibrate(dev, MCU_CAL_VCO, chan->hw_value,
false);
usleep_range(10, 20);
/* XXX: tssi */
}
tx_alc = mt76_rr(dev, MT_TX_ALC_CFG_0);
mt76_wr(dev, MT_TX_ALC_CFG_0, 0);
usleep_range(500, 700);
reg_val = mt76_rr(dev, MT_BBP(IBI, 9));
mt76_wr(dev, MT_BBP(IBI, 9), 0xffffff7e);
if (chan->band == NL80211_BAND_5GHZ) {
if (chan->hw_value < 100)
val = 0x701;
else if (chan->hw_value < 140)
val = 0x801;
else
val = 0x901;
} else {
val = 0x600;
}
mt76x02_mcu_calibrate(dev, MCU_CAL_FULL, val, false);
msleep(350);
mt76x02_mcu_calibrate(dev, MCU_CAL_LC, 1, false);
usleep_range(15000, 20000);
mt76_wr(dev, MT_BBP(IBI, 9), reg_val);
mt76_wr(dev, MT_TX_ALC_CFG_0, tx_alc);
mt76x02_mcu_calibrate(dev, MCU_CAL_RXDCOC, 1, false);
}
EXPORT_SYMBOL_GPL(mt76x0_phy_calibrate);
int mt76x0_phy_set_channel(struct mt76x02_dev *dev,
struct cfg80211_chan_def *chandef)
{
@ -671,9 +713,14 @@ int mt76x0_phy_set_channel(struct mt76x02_dev *dev,
/* Vendor driver don't do it */
/* mt76x0_phy_set_tx_power(dev, channel, rf_bw_band); */
mt76x0_vco_cal(dev, channel);
if (scan)
mt76x02_mcu_calibrate(dev, MCU_CAL_RXDCOC, 1, false);
if (mt76_is_usb(dev)) {
mt76x0_vco_cal(dev, channel);
if (scan)
mt76x02_mcu_calibrate(dev, MCU_CAL_RXDCOC, 1,
false);
} else {
mt76x0_phy_calibrate(dev, false);
}
mt76x0_phy_set_txpower(dev);