From 888208d1ccc41bebe97744445787183b17bb3ea4 Mon Sep 17 00:00:00 2001 From: StanleyYP Wang Date: Thu, 20 Mar 2025 09:59:09 +0800 Subject: [PATCH] wifi: mt76: mt7915: set correct background radar capability Some of the variants do not support background radar, so add a helper to report background radar capability. For mt7916, only the variant of 5G 2T2R + 1R supports background radar. Signed-off-by: StanleyYP Wang Reviewed-by: Shayne Chen Link: https://patch.msgid.link/20250320015909.3948612-1-StanleyYP.Wang@mediatek.com Signed-off-by: Felix Fietkau --- .../wireless/mediatek/mt76/mt7915/debugfs.c | 5 +++ .../wireless/mediatek/mt76/mt7915/eeprom.c | 33 ++++++++++++++++++- .../wireless/mediatek/mt76/mt7915/eeprom.h | 1 + .../net/wireless/mediatek/mt76/mt7915/init.c | 7 ++-- .../net/wireless/mediatek/mt76/mt7915/mcu.c | 8 +++-- .../wireless/mediatek/mt76/mt7915/mt7915.h | 3 +- 6 files changed, 49 insertions(+), 8 deletions(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c b/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c index 192e8eff970b..0384e9f519fb 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c +++ b/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c @@ -445,6 +445,11 @@ mt7915_rdd_monitor(struct seq_file *s, void *data) mutex_lock(&dev->mt76.mutex); + if (!mt7915_eeprom_has_background_radar(dev)) { + seq_puts(s, "no background radar capability\n"); + goto out; + } + if (!cfg80211_chandef_valid(chandef)) { ret = -EINVAL; goto out; diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/eeprom.c b/drivers/net/wireless/mediatek/mt76/mt7915/eeprom.c index 928e0b07a9bf..c0f3402d30bb 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/eeprom.c +++ b/drivers/net/wireless/mediatek/mt76/mt7915/eeprom.c @@ -147,7 +147,7 @@ static int mt7915_eeprom_load(struct mt7915_dev *dev) /* read eeprom data from efuse */ block_num = DIV_ROUND_UP(eeprom_size, eeprom_blk_size); for (i = 0; i < block_num; i++) { - ret = mt7915_mcu_get_eeprom(dev, i * eeprom_blk_size); + ret = mt7915_mcu_get_eeprom(dev, i * eeprom_blk_size, NULL); if (ret < 0) return ret; } @@ -361,6 +361,37 @@ s8 mt7915_eeprom_get_power_delta(struct mt7915_dev *dev, int band) return val & MT_EE_RATE_DELTA_SIGN ? delta : -delta; } +bool +mt7915_eeprom_has_background_radar(struct mt7915_dev *dev) +{ + u8 val, buf[MT7915_EEPROM_BLOCK_SIZE]; + u8 band_sel, tx_path, rx_path; + int offs = MT_EE_WIFI_CONF + 1; + + switch (mt76_chip(&dev->mt76)) { + case 0x7915: + return true; + case 0x7906: + /* read efuse to check background radar capability */ + if (mt7915_mcu_get_eeprom(dev, offs, buf)) + break; + + val = buf[offs % MT7915_EEPROM_BLOCK_SIZE]; + band_sel = u8_get_bits(val, MT_EE_WIFI_CONF0_BAND_SEL); + tx_path = u8_get_bits(val, MT_EE_WIFI_CONF0_TX_PATH); + rx_path = u8_get_bits(val, MT_EE_WIFI_CONF0_RX_PATH); + + return (band_sel == MT_EE_V2_BAND_SEL_5GHZ && + tx_path == rx_path && rx_path == 2); + case 0x7981: + case 0x7986: + default: + break; + } + + return false; +} + const u8 mt7915_sku_group_len[] = { [SKU_CCK] = 4, [SKU_OFDM] = 8, diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/eeprom.h b/drivers/net/wireless/mediatek/mt76/mt7915/eeprom.h index 509fb43d8a68..31aec0f40232 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/eeprom.h +++ b/drivers/net/wireless/mediatek/mt76/mt7915/eeprom.h @@ -55,6 +55,7 @@ enum mt7915_eeprom_field { #define MT_EE_CAL_DPD_SIZE_V2_7981 (102 * MT_EE_CAL_UNIT) /* no 6g dpd data */ #define MT_EE_WIFI_CONF0_TX_PATH GENMASK(2, 0) +#define MT_EE_WIFI_CONF0_RX_PATH GENMASK(5, 3) #define MT_EE_WIFI_CONF0_BAND_SEL GENMASK(7, 6) #define MT_EE_WIFI_CONF1_BAND_SEL GENMASK(7, 6) #define MT_EE_WIFI_CONF_STREAM_NUM GENMASK(7, 5) diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/init.c b/drivers/net/wireless/mediatek/mt76/mt7915/init.c index bee4beabc4eb..57d5be94624b 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/init.c +++ b/drivers/net/wireless/mediatek/mt76/mt7915/init.c @@ -392,9 +392,10 @@ mt7915_init_wiphy(struct mt7915_phy *phy) if (!is_mt7915(&dev->mt76)) wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_STA_TX_PWR); - if (!mdev->dev->of_node || - !of_property_read_bool(mdev->dev->of_node, - "mediatek,disable-radar-background")) + if (mt7915_eeprom_has_background_radar(phy->dev) && + (!mdev->dev->of_node || + !of_property_read_bool(mdev->dev->of_node, + "mediatek,disable-radar-background"))) wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_RADAR_BACKGROUND); diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c index 3643c72bb68d..c9a4c35001dd 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c @@ -2859,7 +2859,7 @@ int mt7915_mcu_set_eeprom(struct mt7915_dev *dev) &req, sizeof(req), true); } -int mt7915_mcu_get_eeprom(struct mt7915_dev *dev, u32 offset) +int mt7915_mcu_get_eeprom(struct mt7915_dev *dev, u32 offset, u8 *read_buf) { struct mt7915_mcu_eeprom_info req = { .addr = cpu_to_le32(round_down(offset, @@ -2867,8 +2867,8 @@ int mt7915_mcu_get_eeprom(struct mt7915_dev *dev, u32 offset) }; struct mt7915_mcu_eeprom_info *res; struct sk_buff *skb; + u8 *buf = read_buf; int ret; - u8 *buf; ret = mt76_mcu_send_and_get_msg(&dev->mt76, MCU_EXT_QUERY(EFUSE_ACCESS), @@ -2877,8 +2877,10 @@ int mt7915_mcu_get_eeprom(struct mt7915_dev *dev, u32 offset) return ret; res = (struct mt7915_mcu_eeprom_info *)skb->data; - buf = dev->mt76.eeprom.data + le32_to_cpu(res->addr); + if (!buf) + buf = dev->mt76.eeprom.data + le32_to_cpu(res->addr); memcpy(buf, res->data, MT7915_EEPROM_BLOCK_SIZE); + dev_kfree_skb(skb); return 0; diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h b/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h index 533939f2b7ed..66bb94192297 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h @@ -425,6 +425,7 @@ int mt7915_eeprom_get_target_power(struct mt7915_dev *dev, struct ieee80211_channel *chan, u8 chain_idx); s8 mt7915_eeprom_get_power_delta(struct mt7915_dev *dev, int band); +bool mt7915_eeprom_has_background_radar(struct mt7915_dev *dev); int mt7915_dma_init(struct mt7915_dev *dev, struct mt7915_phy *phy2); void mt7915_dma_prefetch(struct mt7915_dev *dev); void mt7915_dma_cleanup(struct mt7915_dev *dev); @@ -473,7 +474,7 @@ int mt7915_mcu_set_fixed_rate_ctrl(struct mt7915_dev *dev, struct ieee80211_sta *sta, void *data, u32 field); int mt7915_mcu_set_eeprom(struct mt7915_dev *dev); -int mt7915_mcu_get_eeprom(struct mt7915_dev *dev, u32 offset); +int mt7915_mcu_get_eeprom(struct mt7915_dev *dev, u32 offset, u8 *read_buf); int mt7915_mcu_get_eeprom_free_block(struct mt7915_dev *dev, u8 *block_num); int mt7915_mcu_set_mac(struct mt7915_dev *dev, int band, bool enable, bool hdr_trans); -- 2.50.1