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Commit 9aec146d authored by Lorenzo Bianconi's avatar Lorenzo Bianconi Committed by Felix Fietkau
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mt76x0: pci: introduce mt76x0_phy_calirate routine 



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

Signed-off-by: default avatarLorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: default avatarFelix Fietkau <nbd@nbd.name>
parent 3eaf05de

drivers/net/wireless/mediatek/mt76/mt76x0/mcu.h

+3 −0
Original line number Diff line number Diff line
@@ -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);

drivers/net/wireless/mediatek/mt76/mt76x0/mt76x0.h

+1 −0
Original line number Diff line number Diff line
@@ -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);

drivers/net/wireless/mediatek/mt76/mt76x0/pci.c

+1 −0
Original line number Diff line number Diff line
@@ -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,

drivers/net/wireless/mediatek/mt76/mt76x0/phy.c

+50 −3
Original line number Diff line number Diff line
@@ -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); */



	if (mt76_is_usb(dev)) {

		mt76x0_vco_cal(dev, channel);

		if (scan)

		mt76x02_mcu_calibrate(dev, MCU_CAL_RXDCOC, 1, false);

			mt76x02_mcu_calibrate(dev, MCU_CAL_RXDCOC, 1,

					      false);

	} else {

		mt76x0_phy_calibrate(dev, false);

	}



	mt76x0_phy_set_txpower(dev);