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wifi: mt76: mt7925: update the channel usage when the regd domain changed

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The 5.9/6GHz channel license of a certain platform device has been
regulated in various countries. That may be difference with standard Liunx
regulatory domain settings. In this case, when .reg_notifier() called for
regulatory change, mt7925 chipset should update the channel usage based on
CLC data.

Signed-off-by: Ming Yen Hsieh <mingyen.hsieh@mediatek.com>
Link: https://patch.msgid.link/20250304113649.867387-3-mingyen.hsieh@mediatek.com
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Ming Yen Hsieh 2025-03-04 19:36:46 +08:00 committed by Felix Fietkau
parent f0317215b3
commit 91b3790240
3 changed files with 48 additions and 2 deletions
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40
drivers/net/wireless/mediatek/mt76/mt7925/init.c
View File

@ -96,15 +96,55 @@ void mt7925_regd_be_ctrl(struct mt792x_dev *dev, u8 *alpha2)
mt7925_set_stream_he_eht_caps(phy);
}
static void
mt7925_regd_channel_update(struct wiphy *wiphy, struct mt792x_dev *dev)
{
#define IS_UNII_INVALID(idx, sfreq, efreq, cfreq) \
(!(dev->phy.clc_chan_conf & BIT(idx)) && (cfreq) >= (sfreq) && (cfreq) <= (efreq))
struct ieee80211_supported_band *sband;
struct mt76_dev *mdev = &dev->mt76;
struct ieee80211_channel *ch;
int i;
sband = wiphy->bands[NL80211_BAND_5GHZ];
if (!sband)
return;
for (i = 0; i < sband->n_channels; i++) {
ch = &sband->channels[i];
/* UNII-4 */
if (IS_UNII_INVALID(0, 5845, 5925, ch->center_freq))
ch->flags |= IEEE80211_CHAN_DISABLED;
}
sband = wiphy->bands[NL80211_BAND_6GHZ];
if (!sband)
return;
for (i = 0; i < sband->n_channels; i++) {
ch = &sband->channels[i];
/* UNII-5/6/7/8 */
if (IS_UNII_INVALID(1, 5925, 6425, ch->center_freq) ||
IS_UNII_INVALID(2, 6425, 6525, ch->center_freq) ||
IS_UNII_INVALID(3, 6525, 6875, ch->center_freq) ||
IS_UNII_INVALID(4, 6875, 7125, ch->center_freq))
ch->flags |= IEEE80211_CHAN_DISABLED;
}
}
void mt7925_regd_update(struct mt792x_dev *dev)
{
struct mt76_dev *mdev = &dev->mt76;
struct ieee80211_hw *hw = mdev->hw;
struct wiphy *wiphy = hw->wiphy;
if (!dev->regd_change)
return;
mt7925_mcu_set_clc(dev, mdev->alpha2, dev->country_ie_env);
mt7925_regd_channel_update(wiphy, dev);
mt7925_mcu_set_channel_domain(hw->priv);
mt7925_set_tx_sar_pwr(hw, NULL);
dev->regd_change = false;

7
drivers/net/wireless/mediatek/mt76/mt7925/mcu.c
View File

@ -686,6 +686,7 @@ static int mt7925_load_clc(struct mt792x_dev *dev, const char *fw_name)
u8 *clc_base = NULL, hw_encap = 0;
int ret, i, len, offset = 0;
dev->phy.clc_chan_conf = 0xff;
if (mt7925_disable_clc ||
mt76_is_usb(&dev->mt76))
return 0;
@ -3194,6 +3195,7 @@ __mt7925_mcu_set_clc(struct mt792x_dev *dev, u8 *alpha2,
if (!clc)
return 0;
req.ver = clc->ver;
pos = clc->data + sizeof(*seg) * clc->t0.nr_seg;
last_pos = clc->data + le32_to_cpu(*(__le32 *)(clc->data + 4));
while (pos < last_pos) {
@ -3211,6 +3213,7 @@ __mt7925_mcu_set_clc(struct mt792x_dev *dev, u8 *alpha2,
memcpy(req.type, rule->type, 2);
req.size = cpu_to_le16(seg->len);
dev->phy.clc_chan_conf = clc->ver == 1 ? 0xff : rule->flag;
skb = __mt76_mcu_msg_alloc(&dev->mt76, &req,
le16_to_cpu(req.size) + sizeof(req),
sizeof(req), GFP_KERNEL);
@ -3226,8 +3229,10 @@ __mt7925_mcu_set_clc(struct mt792x_dev *dev, u8 *alpha2,
valid_cnt++;
}
if (!valid_cnt)
if (!valid_cnt) {
dev->phy.clc_chan_conf = 0xff;
return -ENOENT;
}
return 0;
}

3
drivers/net/wireless/mediatek/mt76/mt7925/mt7925.h
View File

@ -147,7 +147,8 @@ struct mt7925_clc_rule {
u8 alpha2[2];
u8 type[2];
u8 seg_idx;
u8 rsv[3];
u8 flag; /* UNII4~8 ctrl flag */
u8 rsv[2];
} __packed;
struct mt7925_clc_segment {