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path: root/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c
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Diffstat (limited to 'drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c')
-rw-r--r--drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c357
1 files changed, 326 insertions, 31 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c b/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c
index 5c3a81e5f559..26b4b875dcc0 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c
@@ -74,7 +74,7 @@ EXPORT_SYMBOL_GPL(mt76_connac_mcu_init_download);
int mt76_connac_mcu_set_channel_domain(struct mt76_phy *phy)
{
- struct mt76_dev *dev = phy->dev;
+ int len, i, n_max_channels, n_2ch = 0, n_5ch = 0, n_6ch = 0;
struct mt76_connac_mcu_channel_domain {
u8 alpha2[4]; /* regulatory_request.alpha2 */
u8 bw_2g; /* BW_20_40M 0
@@ -84,25 +84,29 @@ int mt76_connac_mcu_set_channel_domain(struct mt76_phy *phy)
* BW_20_40_80_8080M 4
*/
u8 bw_5g;
- __le16 pad;
+ u8 bw_6g;
+ u8 pad;
u8 n_2ch;
u8 n_5ch;
- __le16 pad2;
+ u8 n_6ch;
+ u8 pad2;
} __packed hdr = {
.bw_2g = 0,
- .bw_5g = 3,
+ .bw_5g = 3, /* BW_20_40_80_160M */
+ .bw_6g = 3,
};
struct mt76_connac_mcu_chan {
__le16 hw_value;
__le16 pad;
__le32 flags;
} __packed channel;
- int len, i, n_max_channels, n_2ch = 0, n_5ch = 0;
+ struct mt76_dev *dev = phy->dev;
struct ieee80211_channel *chan;
struct sk_buff *skb;
n_max_channels = phy->sband_2g.sband.n_channels +
- phy->sband_5g.sband.n_channels;
+ phy->sband_5g.sband.n_channels +
+ phy->sband_6g.sband.n_channels;
len = sizeof(hdr) + n_max_channels * sizeof(channel);
skb = mt76_mcu_msg_alloc(dev, NULL, len);
@@ -135,11 +139,24 @@ int mt76_connac_mcu_set_channel_domain(struct mt76_phy *phy)
skb_put_data(skb, &channel, sizeof(channel));
n_5ch++;
}
+ for (i = 0; i < phy->sband_6g.sband.n_channels; i++) {
+ chan = &phy->sband_6g.sband.channels[i];
+ if (chan->flags & IEEE80211_CHAN_DISABLED)
+ continue;
+
+ channel.hw_value = cpu_to_le16(chan->hw_value);
+ channel.flags = cpu_to_le32(chan->flags);
+ channel.pad = 0;
+
+ skb_put_data(skb, &channel, sizeof(channel));
+ n_6ch++;
+ }
BUILD_BUG_ON(sizeof(dev->alpha2) > sizeof(hdr.alpha2));
memcpy(hdr.alpha2, dev->alpha2, sizeof(dev->alpha2));
hdr.n_2ch = n_2ch;
hdr.n_5ch = n_5ch;
+ hdr.n_6ch = n_6ch;
memcpy(__skb_push(skb, sizeof(hdr)), &hdr, sizeof(hdr));
@@ -689,9 +706,9 @@ mt76_connac_get_phy_mode_v2(struct mt76_phy *mphy, struct ieee80211_vif *vif,
if (ht_cap->ht_supported)
mode |= PHY_TYPE_BIT_HT;
- if (he_cap->has_he)
+ if (he_cap && he_cap->has_he)
mode |= PHY_TYPE_BIT_HE;
- } else if (band == NL80211_BAND_5GHZ) {
+ } else if (band == NL80211_BAND_5GHZ || band == NL80211_BAND_6GHZ) {
mode |= PHY_TYPE_BIT_OFDM;
if (ht_cap->ht_supported)
@@ -700,7 +717,7 @@ mt76_connac_get_phy_mode_v2(struct mt76_phy *mphy, struct ieee80211_vif *vif,
if (vht_cap->vht_supported)
mode |= PHY_TYPE_BIT_VHT;
- if (he_cap->has_he)
+ if (he_cap && he_cap->has_he)
mode |= PHY_TYPE_BIT_HE;
}
@@ -719,6 +736,7 @@ void mt76_connac_mcu_sta_tlv(struct mt76_phy *mphy, struct sk_buff *skb,
struct sta_rec_state *state;
struct sta_rec_phy *phy;
struct tlv *tlv;
+ u16 supp_rates;
/* starec ht */
if (sta->ht_cap.ht_supported) {
@@ -748,12 +766,22 @@ void mt76_connac_mcu_sta_tlv(struct mt76_phy *mphy, struct sk_buff *skb,
if (!is_mt7921(dev))
return;
- if (sta->ht_cap.ht_supported)
+ if (sta->ht_cap.ht_supported || sta->he_cap.has_he)
mt76_connac_mcu_sta_amsdu_tlv(skb, sta, vif);
/* starec he */
- if (sta->he_cap.has_he)
+ if (sta->he_cap.has_he) {
mt76_connac_mcu_sta_he_tlv(skb, sta);
+ if (band == NL80211_BAND_6GHZ &&
+ sta_state == MT76_STA_INFO_STATE_ASSOC) {
+ struct sta_rec_he_6g_capa *he_6g_capa;
+
+ tlv = mt76_connac_mcu_add_tlv(skb, STA_REC_HE_6G,
+ sizeof(*he_6g_capa));
+ he_6g_capa = (struct sta_rec_he_6g_capa *)tlv;
+ he_6g_capa->capa = sta->he_6ghz_capa.capa;
+ }
+ }
tlv = mt76_connac_mcu_add_tlv(skb, STA_REC_PHY, sizeof(*phy));
phy = (struct sta_rec_phy *)tlv;
@@ -767,7 +795,15 @@ void mt76_connac_mcu_sta_tlv(struct mt76_phy *mphy, struct sk_buff *skb,
tlv = mt76_connac_mcu_add_tlv(skb, STA_REC_RA, sizeof(*ra_info));
ra_info = (struct sta_rec_ra_info *)tlv;
- ra_info->legacy = cpu_to_le16((u16)sta->supp_rates[band]);
+
+ supp_rates = sta->supp_rates[band];
+ if (band == NL80211_BAND_2GHZ)
+ supp_rates = FIELD_PREP(RA_LEGACY_OFDM, supp_rates >> 4) |
+ FIELD_PREP(RA_LEGACY_CCK, supp_rates & 0xf);
+ else
+ supp_rates = FIELD_PREP(RA_LEGACY_OFDM, supp_rates);
+
+ ra_info->legacy = cpu_to_le16(supp_rates);
if (sta->ht_cap.ht_supported)
memcpy(ra_info->rx_mcs_bitmask, sta->ht_cap.mcs.rx_mask,
@@ -1145,7 +1181,7 @@ mt76_connac_get_phy_mode(struct mt76_phy *phy, struct ieee80211_vif *vif,
if (he_cap->has_he)
mode |= PHY_MODE_AX_24G;
- } else if (band == NL80211_BAND_5GHZ) {
+ } else if (band == NL80211_BAND_5GHZ || band == NL80211_BAND_6GHZ) {
mode |= PHY_MODE_A;
if (ht_cap->ht_supported)
@@ -1154,8 +1190,12 @@ mt76_connac_get_phy_mode(struct mt76_phy *phy, struct ieee80211_vif *vif,
if (vht_cap->vht_supported)
mode |= PHY_MODE_AC;
- if (he_cap->has_he)
- mode |= PHY_MODE_AX_5G;
+ if (he_cap->has_he) {
+ if (band == NL80211_BAND_6GHZ)
+ mode |= PHY_MODE_AX_6G;
+ else
+ mode |= PHY_MODE_AX_5G;
+ }
}
return mode;
@@ -1252,7 +1292,8 @@ int mt76_connac_mcu_uni_add_bss(struct mt76_phy *phy,
u8 short_st;
u8 ht_op_info;
u8 sco;
- u8 pad[3];
+ u8 band;
+ u8 pad[2];
} __packed rlm;
} __packed rlm_req = {
.hdr = {
@@ -1268,13 +1309,19 @@ int mt76_connac_mcu_uni_add_bss(struct mt76_phy *phy,
.ht_op_info = 4, /* set HT 40M allowed */
.rx_streams = phy->chainmask,
.short_st = true,
+ .band = band,
},
};
int err, conn_type;
- u8 idx;
+ u8 idx, basic_phy;
idx = mvif->omac_idx > EXT_BSSID_START ? HW_BSSID_0 : mvif->omac_idx;
basic_req.basic.hw_bss_idx = idx;
+ if (band == NL80211_BAND_6GHZ)
+ basic_req.basic.phymode_ext = BIT(0);
+
+ basic_phy = mt76_connac_get_phy_mode_v2(phy, vif, band, NULL);
+ basic_req.basic.nonht_basic_phy = cpu_to_le16(basic_phy);
switch (vif->type) {
case NL80211_IFTYPE_MESH_POINT:
@@ -1445,7 +1492,17 @@ int mt76_connac_mcu_hw_scan(struct mt76_phy *phy, struct ieee80211_vif *vif,
else
chan = &req->channels[i];
- chan->band = scan_list[i]->band == NL80211_BAND_2GHZ ? 1 : 2;
+ switch (scan_list[i]->band) {
+ case NL80211_BAND_2GHZ:
+ chan->band = 1;
+ break;
+ case NL80211_BAND_6GHZ:
+ chan->band = 3;
+ break;
+ default:
+ chan->band = 2;
+ break;
+ }
chan->channel_num = scan_list[i]->hw_value;
}
req->channel_type = sreq->n_channels ? 4 : 0;
@@ -1531,8 +1588,10 @@ int mt76_connac_mcu_sched_scan_req(struct mt76_phy *phy,
get_random_mask_addr(addr, sreq->mac_addr,
sreq->mac_addr_mask);
}
- if (is_mt7921(phy->dev))
+ if (is_mt7921(phy->dev)) {
req->mt7921.bss_idx = mvif->idx;
+ req->mt7921.delay = cpu_to_le32(sreq->delay);
+ }
req->ssids_num = sreq->n_ssids;
for (i = 0; i < req->ssids_num; i++) {
@@ -1554,7 +1613,18 @@ int mt76_connac_mcu_sched_scan_req(struct mt76_phy *phy,
req->channels_num = min_t(u8, sreq->n_channels, 64);
for (i = 0; i < req->channels_num; i++) {
chan = &req->channels[i];
- chan->band = scan_list[i]->band == NL80211_BAND_2GHZ ? 1 : 2;
+
+ switch (scan_list[i]->band) {
+ case NL80211_BAND_2GHZ:
+ chan->band = 1;
+ break;
+ case NL80211_BAND_6GHZ:
+ chan->band = 3;
+ break;
+ default:
+ chan->band = 2;
+ break;
+ }
chan->channel_num = scan_list[i]->hw_value;
}
@@ -1652,6 +1722,61 @@ void mt76_connac_mcu_coredump_event(struct mt76_dev *dev, struct sk_buff *skb,
}
EXPORT_SYMBOL_GPL(mt76_connac_mcu_coredump_event);
+static void mt76_connac_mcu_parse_tx_resource(struct mt76_dev *dev,
+ struct sk_buff *skb)
+{
+ struct mt76_sdio *sdio = &dev->sdio;
+ struct mt76_connac_tx_resource {
+ __le32 version;
+ __le32 pse_data_quota;
+ __le32 pse_mcu_quota;
+ __le32 ple_data_quota;
+ __le32 ple_mcu_quota;
+ __le16 pse_page_size;
+ __le16 ple_page_size;
+ u8 pp_padding;
+ u8 pad[3];
+ } __packed * tx_res;
+
+ tx_res = (struct mt76_connac_tx_resource *)skb->data;
+ sdio->sched.pse_data_quota = le32_to_cpu(tx_res->pse_data_quota);
+ sdio->sched.pse_mcu_quota = le32_to_cpu(tx_res->pse_mcu_quota);
+ sdio->sched.ple_data_quota = le32_to_cpu(tx_res->ple_data_quota);
+ sdio->sched.pse_page_size = le16_to_cpu(tx_res->pse_page_size);
+ sdio->sched.deficit = tx_res->pp_padding;
+}
+
+static void mt76_connac_mcu_parse_phy_cap(struct mt76_dev *dev,
+ struct sk_buff *skb)
+{
+ struct mt76_connac_phy_cap {
+ u8 ht;
+ u8 vht;
+ u8 _5g;
+ u8 max_bw;
+ u8 nss;
+ u8 dbdc;
+ u8 tx_ldpc;
+ u8 rx_ldpc;
+ u8 tx_stbc;
+ u8 rx_stbc;
+ u8 hw_path;
+ u8 he;
+ } __packed * cap;
+
+ enum {
+ WF0_24G,
+ WF0_5G
+ };
+
+ cap = (struct mt76_connac_phy_cap *)skb->data;
+
+ dev->phy.antenna_mask = BIT(cap->nss) - 1;
+ dev->phy.chainmask = dev->phy.antenna_mask;
+ dev->phy.cap.has_2ghz = cap->hw_path & BIT(WF0_24G);
+ dev->phy.cap.has_5ghz = cap->hw_path & BIT(WF0_5G);
+}
+
int mt76_connac_mcu_get_nic_capability(struct mt76_phy *phy)
{
struct mt76_connac_cap_hdr {
@@ -1694,6 +1819,17 @@ int mt76_connac_mcu_get_nic_capability(struct mt76_phy *phy)
case MT_NIC_CAP_6G:
phy->cap.has_6ghz = skb->data[0];
break;
+ case MT_NIC_CAP_MAC_ADDR:
+ memcpy(phy->macaddr, (void *)skb->data, ETH_ALEN);
+ break;
+ case MT_NIC_CAP_PHY:
+ mt76_connac_mcu_parse_phy_cap(phy->dev, skb);
+ break;
+ case MT_NIC_CAP_TX_RESOURCE:
+ if (mt76_is_sdio(phy->dev))
+ mt76_connac_mcu_parse_tx_resource(phy->dev,
+ skb);
+ break;
default:
break;
}
@@ -1749,6 +1885,70 @@ 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)
+{
+ struct mt76_dev *dev = phy->dev;
+ struct ieee80211_supported_band *sband;
+ int i;
+
+ switch (chan->band) {
+ case NL80211_BAND_2GHZ:
+ sband = &phy->sband_2g.sband;
+ break;
+ case NL80211_BAND_5GHZ:
+ sband = &phy->sband_5g.sband;
+ break;
+ case NL80211_BAND_6GHZ:
+ sband = &phy->sband_6g.sband;
+ break;
+ default:
+ return target_power;
+ }
+
+ for (i = 0; i < sband->n_channels; i++) {
+ struct ieee80211_channel *ch = &sband->channels[i];
+
+ if (ch->hw_value == chan->hw_value) {
+ if (!(ch->flags & IEEE80211_CHAN_DISABLED)) {
+ int power = 2 * ch->max_reg_power;
+
+ if (is_mt7663(dev) && (power > 63 || power < -64))
+ power = 63;
+ target_power = min_t(s8, power, target_power);
+ }
+ break;
+ }
+ }
+
+ return target_power;
+}
+
static int
mt76_connac_mcu_rate_txpower_band(struct mt76_phy *phy,
enum nl80211_band band)
@@ -1768,6 +1968,24 @@ mt76_connac_mcu_rate_txpower_band(struct mt76_phy *phy,
142, 144, 149, 151, 153, 155, 157,
159, 161, 165
};
+ static const u8 chan_list_6ghz[] = {
+ 1, 3, 5, 7, 9, 11, 13,
+ 15, 17, 19, 21, 23, 25, 27,
+ 29, 33, 35, 37, 39, 41, 43,
+ 45, 47, 49, 51, 53, 55, 57,
+ 59, 61, 65, 67, 69, 71, 73,
+ 75, 77, 79, 81, 83, 85, 87,
+ 89, 91, 93, 97, 99, 101, 103,
+ 105, 107, 109, 111, 113, 115, 117,
+ 119, 121, 123, 125, 129, 131, 133,
+ 135, 137, 139, 141, 143, 145, 147,
+ 149, 151, 153, 155, 157, 161, 163,
+ 165, 167, 169, 171, 173, 175, 177,
+ 179, 181, 183, 185, 187, 189, 193,
+ 195, 197, 199, 201, 203, 205, 207,
+ 209, 211, 213, 215, 217, 219, 221,
+ 225, 227, 229, 233
+ };
int i, n_chan, batch_size, idx = 0, tx_power, last_ch;
struct mt76_connac_sku_tlv sku_tlbv;
struct mt76_power_limits limits;
@@ -1781,6 +1999,9 @@ mt76_connac_mcu_rate_txpower_band(struct mt76_phy *phy,
if (band == NL80211_BAND_2GHZ) {
n_chan = ARRAY_SIZE(chan_list_2ghz);
ch_list = chan_list_2ghz;
+ } else if (band == NL80211_BAND_6GHZ) {
+ n_chan = ARRAY_SIZE(chan_list_6ghz);
+ ch_list = chan_list_6ghz;
} else {
n_chan = ARRAY_SIZE(chan_list_5ghz);
ch_list = chan_list_5ghz;
@@ -1789,13 +2010,13 @@ mt76_connac_mcu_rate_txpower_band(struct mt76_phy *phy,
if (!phy->cap.has_5ghz)
last_ch = chan_list_2ghz[n_chan - 1];
+ else if (phy->cap.has_6ghz)
+ last_ch = chan_list_6ghz[n_chan - 1];
else
last_ch = chan_list_5ghz[n_chan - 1];
for (i = 0; i < batch_size; i++) {
- struct mt76_connac_tx_power_limit_tlv tx_power_tlv = {
- .band = band == NL80211_BAND_2GHZ ? 1 : 2,
- };
+ struct mt76_connac_tx_power_limit_tlv tx_power_tlv = {};
int j, err, msg_len, num_ch;
struct sk_buff *skb;
@@ -1811,14 +2032,32 @@ mt76_connac_mcu_rate_txpower_band(struct mt76_phy *phy,
memcpy(tx_power_tlv.alpha2, dev->alpha2, sizeof(dev->alpha2));
tx_power_tlv.n_chan = num_ch;
+ switch (band) {
+ case NL80211_BAND_2GHZ:
+ tx_power_tlv.band = 1;
+ break;
+ case NL80211_BAND_6GHZ:
+ tx_power_tlv.band = 3;
+ break;
+ default:
+ tx_power_tlv.band = 2;
+ break;
+ }
+
for (j = 0; j < num_ch; j++, idx++) {
struct ieee80211_channel chan = {
.hw_value = ch_list[idx],
.band = band,
};
+ s8 reg_power, sar_power;
+
+ reg_power = mt76_connac_get_ch_power(phy, &chan,
+ tx_power);
+ sar_power = mt76_connac_get_sar_power(phy, &chan,
+ reg_power);
mt76_get_rate_power_limits(phy, &chan, &limits,
- tx_power);
+ sar_power);
tx_power_tlv.last_msg = ch_list[idx] == last_ch;
sku_tlbv.channel = ch_list[idx];
@@ -1855,6 +2094,12 @@ int mt76_connac_mcu_set_rate_txpower(struct mt76_phy *phy)
if (err < 0)
return err;
}
+ if (phy->cap.has_6ghz) {
+ err = mt76_connac_mcu_rate_txpower_band(phy,
+ NL80211_BAND_6GHZ);
+ if (err < 0)
+ return err;
+ }
return 0;
}
@@ -1902,6 +2147,26 @@ int mt76_connac_mcu_update_arp_filter(struct mt76_dev *dev,
}
EXPORT_SYMBOL_GPL(mt76_connac_mcu_update_arp_filter);
+int mt76_connac_mcu_set_p2p_oppps(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif)
+{
+ struct mt76_vif *mvif = (struct mt76_vif *)vif->drv_priv;
+ int ct_window = vif->bss_conf.p2p_noa_attr.oppps_ctwindow;
+ struct mt76_phy *phy = hw->priv;
+ struct {
+ __le32 ct_win;
+ u8 bss_idx;
+ u8 rsv[3];
+ } __packed req = {
+ .ct_win = cpu_to_le32(ct_window),
+ .bss_idx = mvif->idx,
+ };
+
+ return mt76_mcu_send_msg(phy->dev, MCU_CMD_SET_P2P_OPPPS, &req,
+ sizeof(req), false);
+}
+EXPORT_SYMBOL_GPL(mt76_connac_mcu_set_p2p_oppps);
+
#ifdef CONFIG_PM
const struct wiphy_wowlan_support mt76_connac_wowlan_support = {
@@ -1929,19 +2194,22 @@ mt76_connac_mcu_key_iter(struct ieee80211_hw *hw,
key->cipher != WLAN_CIPHER_SUITE_TKIP)
return;
- if (key->cipher == WLAN_CIPHER_SUITE_TKIP) {
- gtk_tlv->proto = cpu_to_le32(NL80211_WPA_VERSION_1);
+ if (key->cipher == WLAN_CIPHER_SUITE_TKIP)
cipher = BIT(3);
- } else {
- gtk_tlv->proto = cpu_to_le32(NL80211_WPA_VERSION_2);
+ else
cipher = BIT(4);
- }
/* we are assuming here to have a single pairwise key */
if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
+ if (key->cipher == WLAN_CIPHER_SUITE_TKIP)
+ gtk_tlv->proto = cpu_to_le32(NL80211_WPA_VERSION_1);
+ else
+ gtk_tlv->proto = cpu_to_le32(NL80211_WPA_VERSION_2);
+
gtk_tlv->pairwise_cipher = cpu_to_le32(cipher);
- gtk_tlv->group_cipher = cpu_to_le32(cipher);
gtk_tlv->keyid = key->keyidx;
+ } else {
+ gtk_tlv->group_cipher = cpu_to_le32(cipher);
}
}
@@ -2209,8 +2477,35 @@ void mt76_connac_mcu_set_suspend_iter(void *priv, u8 *mac,
mt76_connac_mcu_set_wow_ctrl(phy, vif, suspend, wowlan);
}
EXPORT_SYMBOL_GPL(mt76_connac_mcu_set_suspend_iter);
-
#endif /* CONFIG_PM */
+u32 mt76_connac_mcu_reg_rr(struct mt76_dev *dev, u32 offset)
+{
+ struct {
+ __le32 addr;
+ __le32 val;
+ } __packed req = {
+ .addr = cpu_to_le32(offset),
+ };
+
+ return mt76_mcu_send_msg(dev, MCU_CMD_REG_READ, &req, sizeof(req),
+ true);
+}
+EXPORT_SYMBOL_GPL(mt76_connac_mcu_reg_rr);
+
+void mt76_connac_mcu_reg_wr(struct mt76_dev *dev, u32 offset, u32 val)
+{
+ struct {
+ __le32 addr;
+ __le32 val;
+ } __packed req = {
+ .addr = cpu_to_le32(offset),
+ .val = cpu_to_le32(val),
+ };
+
+ mt76_mcu_send_msg(dev, MCU_CMD_REG_WRITE, &req, sizeof(req), false);
+}
+EXPORT_SYMBOL_GPL(mt76_connac_mcu_reg_wr);
+
MODULE_AUTHOR("Lorenzo Bianconi <lorenzo@kernel.org>");
MODULE_LICENSE("Dual BSD/GPL");