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mt76x2: initialize channel power limits at probe time

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This allows user space to query the real hardware limits directly

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Felix Fietkau 2017-12-14 16:39:11 +01:00 committed by Kalle Valo
parent 60e2434c5f
commit 984ea50324
4 changed files with 43 additions and 13 deletions
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11
drivers/net/wireless/mediatek/mt76/mt76x2_eeprom.c
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@ -483,6 +483,17 @@ void mt76x2_get_rate_power(struct mt76x2_dev *dev, struct mt76_rate_power *t,
t->vht[8] = t->vht[9] = mt76x2_rate_power_val(val >> 8);
}
int mt76x2_get_max_rate_power(struct mt76_rate_power *r)
{
int i;
s8 ret = 0;
for (i = 0; i < sizeof(r->all); i++)
ret = max(ret, r->all[i]);
return ret;
}
static void
mt76x2_get_power_info_2g(struct mt76x2_dev *dev, struct mt76x2_tx_power_info *t,
struct ieee80211_channel *chan, int chain, int offset)

1
drivers/net/wireless/mediatek/mt76/mt76x2_eeprom.h
View File

@ -148,6 +148,7 @@ mt76x2_eeprom_get(struct mt76x2_dev *dev, enum mt76x2_eeprom_field field)
void mt76x2_get_rate_power(struct mt76x2_dev *dev, struct mt76_rate_power *t,
struct ieee80211_channel *chan);
int mt76x2_get_max_rate_power(struct mt76_rate_power *r);
void mt76x2_get_power_info(struct mt76x2_dev *dev,
struct mt76x2_tx_power_info *t,
struct ieee80211_channel *chan);

30
drivers/net/wireless/mediatek/mt76/mt76x2_init.c
View File

@ -760,6 +760,34 @@ static void mt76x2_led_set_brightness(struct led_classdev *led_cdev,
mt76x2_led_set_config(mt76, 0xff, 0);
}
static void
mt76x2_init_txpower(struct mt76x2_dev *dev,
struct ieee80211_supported_band *sband)
{
struct ieee80211_channel *chan;
struct mt76x2_tx_power_info txp;
struct mt76_rate_power t = {};
int target_power;
int i;
for (i = 0; i < sband->n_channels; i++) {
chan = &sband->channels[i];
mt76x2_get_power_info(dev, &txp, chan);
target_power = max_t(int, (txp.chain[0].target_power +
txp.chain[0].delta),
(txp.chain[1].target_power +
txp.chain[1].delta));
mt76x2_get_rate_power(dev, &t, chan);
chan->max_power = mt76x2_get_max_rate_power(&t) +
target_power;
chan->max_power /= 2;
}
}
int mt76x2_register_device(struct mt76x2_dev *dev)
{
struct ieee80211_hw *hw = mt76_hw(dev);
@ -828,6 +856,8 @@ int mt76x2_register_device(struct mt76x2_dev *dev)
goto fail;
mt76x2_init_debugfs(dev);
mt76x2_init_txpower(dev, &dev->mt76.sband_2g.sband);
mt76x2_init_txpower(dev, &dev->mt76.sband_5g.sband);
return 0;

14
drivers/net/wireless/mediatek/mt76/mt76x2_phy.c
View File

@ -102,18 +102,6 @@ mt76x2_limit_rate_power(struct mt76_rate_power *r, int limit)
r->all[i] = limit;
}
static int
mt76x2_get_max_power(struct mt76_rate_power *r)
{
int i;
s8 ret = 0;
for (i = 0; i < sizeof(r->all); i++)
ret = max(ret, r->all[i]);
return ret;
}
void mt76x2_phy_set_txpower(struct mt76x2_dev *dev)
{
enum nl80211_chan_width width = dev->mt76.chandef.width;
@ -136,7 +124,7 @@ void mt76x2_phy_set_txpower(struct mt76x2_dev *dev)
mt76x2_add_rate_power_offset(&t, txp.chain[0].target_power +
txp.chain[0].delta);
mt76x2_limit_rate_power(&t, dev->txpower_conf);
dev->txpower_cur = mt76x2_get_max_power(&t);
dev->txpower_cur = mt76x2_get_max_rate_power(&t);
mt76x2_add_rate_power_offset(&t, -(txp.chain[0].target_power +
txp.chain[0].delta + delta));
dev->target_power = txp.chain[0].target_power;