[J][PATCH 5/8] mt76: move sar utilities to mt76-core module
Aaron Ma
aaron.ma at canonical.com
Mon Nov 21 05:53:32 UTC 2022
From: Lorenzo Bianconi <lorenzo at kernel.org>
BugLink: https://bugs.launchpad.net/bugs/1997200
Move mt76_get_sar_power and mt76_init_sar_power in the common code.
This is a preliminary patch to add sar support to mt76x02 drivers.
Signed-off-by: Lorenzo Bianconi <lorenzo at kernel.org>
Signed-off-by: Felix Fietkau <nbd at nbd.name>
(cherry picked from commit b3cb885e56d5f64880109da9516ef2df1e9db7b9)
Signed-off-by: Aaron Ma <aaron.ma at canonical.com>
---
drivers/net/wireless/mediatek/mt76/mac80211.c | 53 +++++++++++++++++++
drivers/net/wireless/mediatek/mt76/mt76.h | 5 ++
.../wireless/mediatek/mt76/mt76_connac_mcu.c | 27 +---------
.../net/wireless/mediatek/mt76/mt7921/main.c | 26 ++-------
4 files changed, 63 insertions(+), 48 deletions(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mac80211.c b/drivers/net/wireless/mediatek/mt76/mac80211.c
index 6a016a24ae187..9d644eb921f47 100644
--- a/drivers/net/wireless/mediatek/mt76/mac80211.c
+++ b/drivers/net/wireless/mediatek/mt76/mac80211.c
@@ -1216,6 +1216,59 @@ int mt76_get_txpower(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
}
EXPORT_SYMBOL_GPL(mt76_get_txpower);
+int mt76_init_sar_power(struct ieee80211_hw *hw,
+ const struct cfg80211_sar_specs *sar)
+{
+ struct mt76_phy *phy = hw->priv;
+ const struct cfg80211_sar_capa *capa = hw->wiphy->sar_capa;
+ int i;
+
+ if (sar->type != NL80211_SAR_TYPE_POWER || !sar->num_sub_specs)
+ return -EINVAL;
+
+ for (i = 0; i < sar->num_sub_specs; i++) {
+ u32 index = sar->sub_specs[i].freq_range_index;
+ /* SAR specifies power limitaton in 0.25dbm */
+ s32 power = sar->sub_specs[i].power >> 1;
+
+ if (power > 127 || power < -127)
+ power = 127;
+
+ phy->frp[index].range = &capa->freq_ranges[index];
+ phy->frp[index].power = power;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(mt76_init_sar_power);
+
+int mt76_get_sar_power(struct mt76_phy *phy,
+ struct ieee80211_channel *chan,
+ int power)
+{
+ const struct cfg80211_sar_capa *capa = phy->hw->wiphy->sar_capa;
+ int freq, i;
+
+ if (!capa || !phy->frp)
+ return power;
+
+ if (power > 127 || power < -127)
+ power = 127;
+
+ freq = ieee80211_channel_to_frequency(chan->hw_value, chan->band);
+ for (i = 0 ; i < capa->num_freq_ranges; i++) {
+ if (phy->frp[i].range &&
+ freq >= phy->frp[i].range->start_freq &&
+ freq < phy->frp[i].range->end_freq) {
+ power = min_t(int, phy->frp[i].power, power);
+ break;
+ }
+ }
+
+ return power;
+}
+EXPORT_SYMBOL_GPL(mt76_get_sar_power);
+
static void
__mt76_csa_finish(void *priv, u8 *mac, struct ieee80211_vif *vif)
{
diff --git a/drivers/net/wireless/mediatek/mt76/mt76.h b/drivers/net/wireless/mediatek/mt76/mt76.h
index 0a282a667580c..a0e6d1cdd533f 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76.h
+++ b/drivers/net/wireless/mediatek/mt76/mt76.h
@@ -1125,6 +1125,11 @@ int mt76_get_min_avg_rssi(struct mt76_dev *dev, bool ext_phy);
int mt76_get_txpower(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
int *dbm);
+int mt76_init_sar_power(struct ieee80211_hw *hw,
+ const struct cfg80211_sar_specs *sar);
+int mt76_get_sar_power(struct mt76_phy *phy,
+ struct ieee80211_channel *chan,
+ int power);
void mt76_csa_check(struct mt76_dev *dev);
void mt76_csa_finish(struct mt76_dev *dev);
diff --git a/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c b/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c
index ccb9ff5a3900a..11f8910bb3c39 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c
@@ -1760,30 +1760,6 @@ mt76_connac_mcu_build_sku(struct mt76_dev *dev, s8 *sku,
}
}
-static s8 mt76_connac_get_sar_power(struct mt76_phy *phy,
- struct ieee80211_channel *chan,
- s8 target_power)
-{
- const struct cfg80211_sar_capa *capa = phy->hw->wiphy->sar_capa;
- struct mt76_freq_range_power *frp = phy->frp;
- int freq, i;
-
- if (!capa || !frp)
- return target_power;
-
- freq = ieee80211_channel_to_frequency(chan->hw_value, chan->band);
- for (i = 0 ; i < capa->num_freq_ranges; i++) {
- if (frp[i].range &&
- freq >= frp[i].range->start_freq &&
- freq < frp[i].range->end_freq) {
- target_power = min_t(s8, frp[i].power, target_power);
- break;
- }
- }
-
- return target_power;
-}
-
static s8 mt76_connac_get_ch_power(struct mt76_phy *phy,
struct ieee80211_channel *chan,
s8 target_power)
@@ -1892,8 +1868,7 @@ mt76_connac_mcu_rate_txpower_band(struct mt76_phy *phy,
reg_power = mt76_connac_get_ch_power(phy, &chan,
tx_power);
- sar_power = mt76_connac_get_sar_power(phy, &chan,
- reg_power);
+ sar_power = mt76_get_sar_power(phy, &chan, reg_power);
mt76_get_rate_power_limits(phy, &chan, &limits,
sar_power);
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/main.c b/drivers/net/wireless/mediatek/mt76/mt7921/main.c
index a2d648c00fc56..f5ea4405db11b 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/main.c
@@ -1176,35 +1176,17 @@ static void mt7921_sta_set_decap_offload(struct ieee80211_hw *hw,
static int mt7921_set_sar_specs(struct ieee80211_hw *hw,
const struct cfg80211_sar_specs *sar)
{
- const struct cfg80211_sar_capa *capa = hw->wiphy->sar_capa;
struct mt7921_dev *dev = mt7921_hw_dev(hw);
- struct mt76_freq_range_power *data, *frp;
struct mt76_phy *mphy = hw->priv;
int err;
- u32 i;
-
- if (sar->type != NL80211_SAR_TYPE_POWER || !sar->num_sub_specs)
- return -EINVAL;
mt7921_mutex_acquire(dev);
-
- data = mphy->frp;
-
- for (i = 0; i < sar->num_sub_specs; i++) {
- u32 index = sar->sub_specs[i].freq_range_index;
- /* SAR specifies power limitaton in 0.25dbm */
- s32 power = sar->sub_specs[i].power >> 1;
-
- if (power > 127 || power < -127)
- power = 127;
-
- frp = &data[index];
- frp->range = &capa->freq_ranges[index];
- frp->power = power;
- }
+ err = mt76_init_sar_power(hw, sar);
+ if (err)
+ goto out;
err = mt76_connac_mcu_set_rate_txpower(mphy);
-
+out:
mt7921_mutex_release(dev);
return err;
--
2.34.1
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