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mt76x2: add mac80211 {set,get}_antenna callbacks 

Add capability to select tx/rx antennas. Possible values are:
 - 1: to use only the first antenna
 - 2: to use only the second antenna
 - 3: to use both of them

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Lorenzo Bianconi 2018-02-24 16:54:14 +01:00 committed by Kalle Valo
parent 551e1ef4d2
commit 5ebdc3e069
6 changed files with 90 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
drivers/net/wireless/mediatek/mt76/mac80211.c
View File

@ -156,6 +156,15 @@ static void mt76_init_stream_cap(struct mt76_dev *dev,
vht_cap->vht_mcs.tx_mcs_map = cpu_to_le16(mcs_map);
}
void mt76_set_stream_caps(struct mt76_dev *dev, bool vht)
{
if (dev->cap.has_2ghz)
mt76_init_stream_cap(dev, &dev->sband_2g.sband, false);
if (dev->cap.has_5ghz)
mt76_init_stream_cap(dev, &dev->sband_5g.sband, vht);
}
EXPORT_SYMBOL_GPL(mt76_set_stream_caps);
static int
mt76_init_sband(struct mt76_dev *dev, struct mt76_sband *msband,
const struct ieee80211_channel *chan, int n_chan,

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

@ -425,6 +425,7 @@ void mt76_release_buffered_frames(struct ieee80211_hw *hw,
void mt76_set_channel(struct mt76_dev *dev);
int mt76_get_survey(struct ieee80211_hw *hw, int idx,
struct survey_info *survey);
void mt76_set_stream_caps(struct mt76_dev *dev, bool vht);
int mt76_rx_aggr_start(struct mt76_dev *dev, struct mt76_wcid *wcid, u8 tid,
u16 ssn, u8 size);

1
drivers/net/wireless/mediatek/mt76/mt76x2.h
View File

@ -180,6 +180,7 @@ int mt76x2_eeprom_init(struct mt76x2_dev *dev);
int mt76x2_apply_calibration_data(struct mt76x2_dev *dev, int channel);
void mt76x2_set_tx_ackto(struct mt76x2_dev *dev);
void mt76x2_phy_set_antenna(struct mt76x2_dev *dev);
int mt76x2_phy_start(struct mt76x2_dev *dev);
int mt76x2_phy_set_channel(struct mt76x2_dev *dev,
struct cfg80211_chan_def *chandef);

36
drivers/net/wireless/mediatek/mt76/mt76x2_main.c
View File

@ -549,6 +549,40 @@ mt76x2_set_tim(struct ieee80211_hw *hw, struct ieee80211_sta *sta, bool set)
return 0;
}
static int mt76x2_set_antenna(struct ieee80211_hw *hw, u32 tx_ant,
u32 rx_ant)
{
struct mt76x2_dev *dev = hw->priv;
if (!tx_ant || tx_ant > 3 || tx_ant != rx_ant)
return -EINVAL;
mutex_lock(&dev->mutex);
dev->chainmask = (tx_ant == 3) ? 0x202 : 0x101;
dev->mt76.antenna_mask = tx_ant;
mt76_set_stream_caps(&dev->mt76, true);
mt76x2_phy_set_antenna(dev);
mutex_unlock(&dev->mutex);
return 0;
}
static int mt76x2_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant,
u32 *rx_ant)
{
struct mt76x2_dev *dev = hw->priv;
mutex_lock(&dev->mutex);
*tx_ant = dev->mt76.antenna_mask;
*rx_ant = dev->mt76.antenna_mask;
mutex_unlock(&dev->mutex);
return 0;
}
const struct ieee80211_ops mt76x2_ops = {
.tx = mt76x2_tx,
.start = mt76x2_start,
@ -573,5 +607,7 @@ const struct ieee80211_ops mt76x2_ops = {
.set_coverage_class = mt76x2_set_coverage_class,
.get_survey = mt76_get_survey,
.set_tim = mt76x2_set_tim,
.set_antenna = mt76x2_set_antenna,
.get_antenna = mt76x2_get_antenna,
};

59
drivers/net/wireless/mediatek/mt76/mt76x2_phy.c
View File

@ -361,27 +361,50 @@ mt76x2_phy_set_band(struct mt76x2_dev *dev, int band, bool primary_upper)
primary_upper);
}
static void
mt76x2_set_rx_chains(struct mt76x2_dev *dev)
void mt76x2_phy_set_antenna(struct mt76x2_dev *dev)
{
u32 val;
val = mt76_rr(dev, MT_BBP(AGC, 0));
val &= ~(BIT(3) | BIT(4));
if (dev->chainmask & BIT(1))
val |= BIT(3);
mt76_wr(dev, MT_BBP(AGC, 0), val);
}
static void
mt76x2_set_tx_dac(struct mt76x2_dev *dev)
{
if (dev->chainmask & BIT(1))
mt76_set(dev, MT_BBP(TXBE, 5), 3);
else
val &= ~(BIT(4) | BIT(1));
switch (dev->mt76.antenna_mask) {
case 1:
/* disable mac DAC control */
mt76_clear(dev, MT_BBP(IBI, 9), BIT(11));
mt76_clear(dev, MT_BBP(TXBE, 5), 3);
mt76_rmw_field(dev, MT_TX_PIN_CFG, MT_TX_PIN_CFG_TXANT, 0x3);
mt76_rmw_field(dev, MT_BBP(CORE, 32), GENMASK(21, 20), 2);
/* disable DAC 1 */
mt76_rmw_field(dev, MT_BBP(CORE, 33), GENMASK(12, 9), 4);
val &= ~(BIT(3) | BIT(0));
break;
case 2:
/* disable mac DAC control */
mt76_clear(dev, MT_BBP(IBI, 9), BIT(11));
mt76_rmw_field(dev, MT_BBP(TXBE, 5), 3, 1);
mt76_rmw_field(dev, MT_TX_PIN_CFG, MT_TX_PIN_CFG_TXANT, 0xc);
mt76_rmw_field(dev, MT_BBP(CORE, 32), GENMASK(21, 20), 1);
/* disable DAC 0 */
mt76_rmw_field(dev, MT_BBP(CORE, 33), GENMASK(12, 9), 1);
val &= ~BIT(3);
val |= BIT(0);
break;
case 3:
default:
/* enable mac DAC control */
mt76_set(dev, MT_BBP(IBI, 9), BIT(11));
mt76_set(dev, MT_BBP(TXBE, 5), 3);
mt76_rmw_field(dev, MT_TX_PIN_CFG, MT_TX_PIN_CFG_TXANT, 0xf);
mt76_clear(dev, MT_BBP(CORE, 32), GENMASK(21, 20));
mt76_clear(dev, MT_BBP(CORE, 33), GENMASK(12, 9));
val &= ~BIT(0);
val |= BIT(3);
break;
}
mt76_wr(dev, MT_BBP(AGC, 0), val);
}
static void
@ -585,10 +608,8 @@ int mt76x2_phy_set_channel(struct mt76x2_dev *dev,
mt76x2_configure_tx_delay(dev, band, bw);
mt76x2_phy_set_txpower(dev);
mt76x2_set_rx_chains(dev);
mt76x2_phy_set_band(dev, chan->band, ch_group_index & 1);
mt76x2_phy_set_bw(dev, chandef->width, ch_group_index);
mt76x2_set_tx_dac(dev);
mt76_rmw(dev, MT_EXT_CCA_CFG,
(MT_EXT_CCA_CFG_CCA0 |
@ -604,6 +625,8 @@ int mt76x2_phy_set_channel(struct mt76x2_dev *dev,
mt76x2_mcu_init_gain(dev, channel, dev->cal.rx.mcu_gain, true);
mt76x2_phy_set_antenna(dev);
/* Enable LDPC Rx */
if (mt76xx_rev(dev) >= MT76XX_REV_E3)
mt76_set(dev, MT_BBP(RXO, 13), BIT(10));

2
drivers/net/wireless/mediatek/mt76/mt76x2_regs.h
View File

@ -321,6 +321,8 @@
#define MT_TX_PWR_CFG_2 0x131c
#define MT_TX_PWR_CFG_3 0x1320
#define MT_TX_PWR_CFG_4 0x1324
#define MT_TX_PIN_CFG 0x1328
#define MT_TX_PIN_CFG_TXANT GENMASK(3, 0)
#define MT_TX_BAND_CFG 0x132c
#define MT_TX_BAND_CFG_UPPER_40M BIT(0)