[PATCH v3 0/7] introduce single-sku support for mt7663/mt7921 drivers

[PATCH v3 0/7] introduce single-sku support for mt7663/mt7921 drivers

[Lorenzo Bianconi]

Add per-rate power limitations for 802.11n/802.11ac/802.11ax rates to
mt7663/mt7921 drivers.
Introduce per-rate power limit dts parsing/binding.

Changes since v2:
- add missing properties in mt76 dts schema

Changes since v1:
- drop patch 1/8 and move regdomain property in mt76.yaml
- various power-limits property fixes in mt76.yaml

Felix Fietkau (2):
  mt76: add functions for parsing rate power limits from DT
  mt76: mt7615: implement support for using DT rate power limits

Lorenzo Bianconi (3):
  dt-bindings:net:wireless:mediatek,mt76: introduce power-limits node
  mt76: mt7615: do not use mt7615 single-sku values for mt7663
  mt76: introduce single-sku support for mt7663/mt7921

Sean Wang (1):
  mt76: mt7921: add dumping Tx power table

Shayne Chen (1):
  mt76: extend DT rate power limits to support 11ax devices

 .../bindings/net/wireless/mediatek,mt76.yaml  | 107 +++++++++
 drivers/net/wireless/mediatek/mt76/eeprom.c   | 220 ++++++++++++++++++
 drivers/net/wireless/mediatek/mt76/mt76.h     |  13 ++
 .../net/wireless/mediatek/mt76/mt7615/init.c  |  15 +-
 .../net/wireless/mediatek/mt76/mt7615/main.c  |   4 +
 .../net/wireless/mediatek/mt76/mt7615/mcu.c   |  66 +++++-
 .../wireless/mediatek/mt76/mt76_connac_mcu.c  | 133 +++++++++++
 .../wireless/mediatek/mt76/mt76_connac_mcu.h  |  24 ++
 .../wireless/mediatek/mt76/mt7921/debugfs.c   |  79 +++++++
 .../net/wireless/mediatek/mt76/mt7921/init.c  |   2 +
 .../net/wireless/mediatek/mt76/mt7921/main.c  |   4 +
 .../net/wireless/mediatek/mt76/mt7921/mcu.c   |  23 ++
 .../net/wireless/mediatek/mt76/mt7921/mcu.h   |  17 ++
 .../wireless/mediatek/mt76/mt7921/mt7921.h    |  31 +++
 14 files changed, 735 insertions(+), 3 deletions(-)

-- 
2.30.2

[PATCH v3 1/7] dt-bindings:net:wireless:mediatek,mt76: introduce power-limits node

[Lorenzo Bianconi]

Introduce power-limits node in mt76 binding in order to specify
per-rate power limit values for each 802.11n/802.11ac rate

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
---
 .../bindings/net/wireless/mediatek,mt76.yaml  | 107 ++++++++++++++++++
 1 file changed, 107 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/wireless/mediatek,mt76.yaml b/Documentation/devicetree/bindings/net/wireless/mediatek,mt76.yaml
index d6f835d17d66..3e2c2e43175e 100644
--- a/Documentation/devicetree/bindings/net/wireless/mediatek,mt76.yaml
+++ b/Documentation/devicetree/bindings/net/wireless/mediatek,mt76.yaml
@@ -72,6 +72,90 @@ properties:
       led-sources:
         maxItems: 1
 
+  power-limits:
+    type: object
+    additionalProperties: false
+    patternProperties:
+      "^r[0-9]+":
+        type: object
+        additionalProperties: false
+        properties:
+          regdomain:
+            $ref: /schemas/types.yaml#/definitions/string
+            description:
+              Regdomain refers to a legal regulatory region. Different
+              countries define different levels of allowable transmitter
+              power, time that a channel can be occupied, and different
+              available channels
+            enum:
+              - FCC
+              - ETSI
+              - JP
+
+        patternProperties:
+          "^txpower-[256]g$":
+            type: object
+            additionalProperties: false
+            patternProperties:
+              "^b[0-9]+$":
+                type: object
+                additionalProperties: false
+                properties:
+                  channels:
+                    $ref: /schemas/types.yaml#/definitions/uint32-array
+                    minItems: 2
+                    maxItems: 2
+                    description:
+                      Pairs of first and last channel number of the selected
+                      band
+
+                  rates-cck:
+                    $ref: /schemas/types.yaml#/definitions/uint8-array
+                    minItems: 4
+                    maxItems: 4
+                    description:
+                      4 half-dBm per-rate power limit values
+
+                  rates-ofdm:
+                    $ref: /schemas/types.yaml#/definitions/uint8-array
+                    minItems: 8
+                    maxItems: 8
+                    description:
+                      8 half-dBm per-rate power limit values
+
+                  rates-mcs:
+                    $ref: /schemas/types.yaml#/definitions/uint8-matrix
+                    description:
+                      Sets of per-rate power limit values for 802.11n/802.11ac
+                      rates for multiple channel bandwidth settings.
+                      Each set starts with the number of channel bandwidth
+                      settings for which the rate set applies, followed by
+                      either 8 or 10 power limit values. The order of the
+                      channel bandwidth settings is 20, 40, 80 and 160 MHz.
+                    maxItems: 4
+                    items:
+                      minItems: 9
+                      maxItems: 11
+
+                  rates-ru:
+                    $ref: /schemas/types.yaml#/definitions/uint8-matrix
+                    description:
+                      Sets of per-rate power limit values for 802.11ax rates
+                      for multiple channel bandwidth or resource unit settings.
+                      Each set starts with the number of channel bandwidth or
+                      resource unit settings for which the rate set applies,
+                      followed by 12 power limit values. The order of the
+                      channel resource unit settings is RU26, RU52, RU106,
+                      RU242/SU20, RU484/SU40, RU996/SU80 and RU2x996/SU160.
+                    items:
+                      minItems: 13
+                      maxItems: 13
+
+                  txs-delta:
+                    $ref: /schemas/types.yaml#/definitions/uint32-array
+                    description:
+                      Half-dBm power delta for different numbers of antennas
+
 required:
   - compatible
   - reg
@@ -93,6 +177,29 @@ examples:
         led {
           led-sources = <2>;
         };
+
+        power-limits {
+          r0 {
+            regdomain = "FCC";
+            txpower-5g {
+               b0 {
+                   channels = <36 48>;
+                   rates-ofdm = /bits/ 8 <23 23 23 23 23 23 23 23>;
+                   rates-mcs = /bits/ 8 <1 23 23 23 23 23 23 23 23 23 23>,
+                                        <3 22 22 22 22 22 22 22 22 22 22>;
+                   rates-ru = /bits/ 8 <3 22 22 22 22 22 22 22 22 22 22 22 22>,
+                                       <4 20 20 20 20 20 20 20 20 20 20 20 20>;
+               };
+               b1 {
+                   channels = <100 181>;
+                   rates-ofdm = /bits/ 8 <14 14 14 14 14 14 14 14>;
+                   rates-mcs = /bits/ 8  <4 14 14 14 14 14 14 14 14 14 14>;
+                   txs-delta = <12 9 6>;
+                   rates-ru = /bits/ 8  <7 14 14 14 14 14 14 14 14 14 14 14 14>;
+               };
+             };
+          };
+        };
       };
     };
 
-- 
2.30.2

[PATCH v3 2/7] mt76: add functions for parsing rate power limits from DT

[Lorenzo Bianconi]

From: Felix Fietkau <nbd@nbd.name>

This subnode can be used to set per-rate tx power limits either per
country code / regdomain or globally.
These limits are typically provided by the device manufacturers and are
used to limit sideband emissions and stay within regulatory limits

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
---
 drivers/net/wireless/mediatek/mt76/eeprom.c | 204 ++++++++++++++++++++
 drivers/net/wireless/mediatek/mt76/mt76.h   |  12 ++
 2 files changed, 216 insertions(+)

diff --git a/drivers/net/wireless/mediatek/mt76/eeprom.c b/drivers/net/wireless/mediatek/mt76/eeprom.c
index 665b54c5c8ae..874a6d869e5b 100644
--- a/drivers/net/wireless/mediatek/mt76/eeprom.c
+++ b/drivers/net/wireless/mediatek/mt76/eeprom.c
@@ -111,6 +111,210 @@ mt76_eeprom_override(struct mt76_phy *phy)
 }
 EXPORT_SYMBOL_GPL(mt76_eeprom_override);
 
+static bool mt76_string_prop_find(struct property *prop, const char *str)
+{
+	const char *cp = NULL;
+
+	if (!prop || !str || !str[0])
+		return false;
+
+	while ((cp = of_prop_next_string(prop, cp)) != NULL)
+		if (!strcasecmp(cp, str))
+			return true;
+
+	return false;
+}
+
+static struct device_node *
+mt76_find_power_limits_node(struct mt76_dev *dev)
+{
+	struct device_node *np = dev->dev->of_node;
+	const char *const region_names[] = {
+		[NL80211_DFS_ETSI] = "etsi",
+		[NL80211_DFS_FCC] = "fcc",
+		[NL80211_DFS_JP] = "jp",
+	};
+	struct device_node *cur, *fallback = NULL;
+	const char *region_name = NULL;
+
+	if (dev->region < ARRAY_SIZE(region_names))
+		region_name = region_names[dev->region];
+
+	np = of_get_child_by_name(np, "power-limits");
+	if (!np)
+		return NULL;
+
+	for_each_child_of_node(np, cur) {
+		struct property *country = of_find_property(cur, "country", NULL);
+		struct property *regd = of_find_property(cur, "regdomain", NULL);
+
+		if (!country && !regd) {
+			fallback = cur;
+			continue;
+		}
+
+		if (mt76_string_prop_find(country, dev->alpha2) ||
+		    mt76_string_prop_find(regd, region_name))
+			return cur;
+	}
+
+	return fallback;
+}
+
+static const __be32 *
+mt76_get_of_array(struct device_node *np, char *name, size_t *len, int min)
+{
+	struct property *prop = of_find_property(np, name, NULL);
+
+	if (!prop || !prop->value || prop->length < min * 4)
+		return NULL;
+
+	*len = prop->length;
+
+	return prop->value;
+}
+
+static struct device_node *
+mt76_find_channel_node(struct device_node *np, struct ieee80211_channel *chan)
+{
+	struct device_node *cur;
+	const __be32 *val;
+	size_t len;
+
+	for_each_child_of_node(np, cur) {
+		val = mt76_get_of_array(cur, "channels", &len, 2);
+		if (!val)
+			continue;
+
+		while (len >= 2 * sizeof(*val)) {
+			if (chan->hw_value >= be32_to_cpu(val[0]) &&
+			    chan->hw_value <= be32_to_cpu(val[1]))
+				return cur;
+
+			val += 2;
+			len -= 2 * sizeof(*val);
+		}
+	}
+
+	return NULL;
+}
+
+static s8
+mt76_get_txs_delta(struct device_node *np, u8 nss)
+{
+	const __be32 *val;
+	size_t len;
+
+	val = mt76_get_of_array(np, "txs-delta", &len, nss);
+	if (!val)
+		return 0;
+
+	return be32_to_cpu(val[nss - 1]);
+}
+
+static void
+mt76_apply_array_limit(s8 *pwr, size_t pwr_len, const __be32 *data,
+		       s8 target_power, s8 nss_delta, s8 *max_power)
+{
+	int i;
+
+	if (!data)
+		return;
+
+	for (i = 0; i < pwr_len; i++) {
+		pwr[i] = min_t(s8, target_power,
+			       be32_to_cpu(data[i]) + nss_delta);
+		*max_power = max(*max_power, pwr[i]);
+	}
+}
+
+s8 mt76_get_rate_power_limits(struct mt76_phy *phy,
+			      struct ieee80211_channel *chan,
+			      struct mt76_power_limits *dest,
+			      s8 target_power)
+{
+	struct mt76_dev *dev = phy->dev;
+	struct device_node *np;
+	const __be32 *val;
+	char name[16];
+	u32 mcs_rates = dev->drv->mcs_rates;
+	char band;
+	size_t len;
+	int i, cur;
+	s8 max_power = 0;
+	s8 txs_delta;
+
+	if (!mcs_rates)
+		mcs_rates = 10;
+
+	memset(dest, target_power, sizeof(*dest));
+
+	if (!IS_ENABLED(CONFIG_OF))
+		return target_power;
+
+	np = mt76_find_power_limits_node(dev);
+	if (!np)
+		return target_power;
+
+	switch (chan->band) {
+	case NL80211_BAND_2GHZ:
+		band = '2';
+		break;
+	case NL80211_BAND_5GHZ:
+		band = '5';
+		break;
+	default:
+		return target_power;
+	}
+
+	snprintf(name, sizeof(name), "txpower-%cg", band);
+	np = of_get_child_by_name(np, name);
+	if (!np)
+		return target_power;
+
+	np = mt76_find_channel_node(np, chan);
+	if (!np)
+		return target_power;
+
+	txs_delta = mt76_get_txs_delta(np, hweight8(phy->antenna_mask));
+
+	val = mt76_get_of_array(np, "rates-cck", &len, ARRAY_SIZE(dest->cck));
+	mt76_apply_array_limit(dest->cck, ARRAY_SIZE(dest->cck), val,
+			       target_power, txs_delta, &max_power);
+
+	val = mt76_get_of_array(np, "rates-ofdm",
+				&len, ARRAY_SIZE(dest->ofdm));
+	mt76_apply_array_limit(dest->ofdm, ARRAY_SIZE(dest->ofdm), val,
+			       target_power, txs_delta, &max_power);
+
+	val = mt76_get_of_array(np, "rates-mcs", &len, mcs_rates + 1);
+	if (!val)
+		return max_power;
+
+	len /= 4;
+	cur = be32_to_cpu(val[0]);
+	for (i = 0; i < ARRAY_SIZE(dest->mcs); i++) {
+		if (len < mcs_rates + 1)
+			break;
+
+		mt76_apply_array_limit(dest->mcs[i], ARRAY_SIZE(dest->mcs[i]),
+				       val + 1, target_power, txs_delta,
+				       &max_power);
+		if (--cur > 0)
+			continue;
+
+		val += mcs_rates + 1;
+		len -= mcs_rates + 1;
+		if (!len)
+			break;
+
+		cur = be32_to_cpu(val[0]);
+	}
+
+	return max_power;
+}
+EXPORT_SYMBOL_GPL(mt76_get_rate_power_limits);
+
 int
 mt76_eeprom_init(struct mt76_dev *dev, int len)
 {
diff --git a/drivers/net/wireless/mediatek/mt76/mt76.h b/drivers/net/wireless/mediatek/mt76/mt76.h
index d121c176c37c..ece5b79a50e2 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76.h
+++ b/drivers/net/wireless/mediatek/mt76/mt76.h
@@ -331,6 +331,7 @@ struct mt76_driver_ops {
 	u32 drv_flags;
 	u32 survey_flags;
 	u16 txwi_size;
+	u8 mcs_rates;
 
 	void (*update_survey)(struct mt76_dev *dev);
 
@@ -711,6 +712,12 @@ struct mt76_dev {
 	};
 };
 
+struct mt76_power_limits {
+	s8 cck[4];
+	s8 ofdm[8];
+	s8 mcs[4][10];
+};
+
 enum mt76_phy_type {
 	MT_PHY_TYPE_CCK,
 	MT_PHY_TYPE_OFDM,
@@ -1194,4 +1201,9 @@ mt76_mcu_skb_send_msg(struct mt76_dev *dev, struct sk_buff *skb, int cmd,
 
 void mt76_set_irq_mask(struct mt76_dev *dev, u32 addr, u32 clear, u32 set);
 
+s8 mt76_get_rate_power_limits(struct mt76_phy *phy,
+			      struct ieee80211_channel *chan,
+			      struct mt76_power_limits *dest,
+			      s8 target_power);
+
 #endif
-- 
2.30.2

[PATCH v3 3/7] mt76: extend DT rate power limits to support 11ax devices

[Lorenzo Bianconi]

From: Shayne Chen <shayne.chen@mediatek.com>

Enable parsing per-rate txpower limits from DT for 11ax chipsets.

Co-developed-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Tested-by: Evelyn Tsai <evelyn.tsai@mediatek.com>
Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
---
 drivers/net/wireless/mediatek/mt76/eeprom.c | 62 +++++++++++++--------
 drivers/net/wireless/mediatek/mt76/mt76.h   |  1 +
 2 files changed, 40 insertions(+), 23 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/eeprom.c b/drivers/net/wireless/mediatek/mt76/eeprom.c
index 874a6d869e5b..e20aa6998e4d 100644
--- a/drivers/net/wireless/mediatek/mt76/eeprom.c
+++ b/drivers/net/wireless/mediatek/mt76/eeprom.c
@@ -228,6 +228,36 @@ mt76_apply_array_limit(s8 *pwr, size_t pwr_len, const __be32 *data,
 	}
 }
 
+static void
+mt76_apply_multi_array_limit(s8 *pwr, size_t pwr_len, s8 pwr_num,
+			     const __be32 *data, size_t len, s8 target_power,
+			     s8 nss_delta, s8 *max_power)
+{
+	int i, cur;
+
+	if (!data)
+		return;
+
+	len /= 4;
+	cur = be32_to_cpu(data[0]);
+	for (i = 0; i < pwr_num; i++) {
+		if (len < pwr_len + 1)
+			break;
+
+		mt76_apply_array_limit(pwr + pwr_len * i, pwr_len, data + 1,
+				       target_power, nss_delta, max_power);
+		if (--cur > 0)
+			continue;
+
+		data += pwr_len + 1;
+		len -= pwr_len + 1;
+		if (!len)
+			break;
+
+		cur = be32_to_cpu(data[0]);
+	}
+}
+
 s8 mt76_get_rate_power_limits(struct mt76_phy *phy,
 			      struct ieee80211_channel *chan,
 			      struct mt76_power_limits *dest,
@@ -238,9 +268,9 @@ s8 mt76_get_rate_power_limits(struct mt76_phy *phy,
 	const __be32 *val;
 	char name[16];
 	u32 mcs_rates = dev->drv->mcs_rates;
+	u32 ru_rates = ARRAY_SIZE(dest->ru[0]);
 	char band;
 	size_t len;
-	int i, cur;
 	s8 max_power = 0;
 	s8 txs_delta;
 
@@ -288,28 +318,14 @@ s8 mt76_get_rate_power_limits(struct mt76_phy *phy,
 			       target_power, txs_delta, &max_power);
 
 	val = mt76_get_of_array(np, "rates-mcs", &len, mcs_rates + 1);
-	if (!val)
-		return max_power;
-
-	len /= 4;
-	cur = be32_to_cpu(val[0]);
-	for (i = 0; i < ARRAY_SIZE(dest->mcs); i++) {
-		if (len < mcs_rates + 1)
-			break;
-
-		mt76_apply_array_limit(dest->mcs[i], ARRAY_SIZE(dest->mcs[i]),
-				       val + 1, target_power, txs_delta,
-				       &max_power);
-		if (--cur > 0)
-			continue;
-
-		val += mcs_rates + 1;
-		len -= mcs_rates + 1;
-		if (!len)
-			break;
-
-		cur = be32_to_cpu(val[0]);
-	}
+	mt76_apply_multi_array_limit(dest->mcs[0], ARRAY_SIZE(dest->mcs[0]),
+				     ARRAY_SIZE(dest->mcs), val, len,
+				     target_power, txs_delta, &max_power);
+
+	val = mt76_get_of_array(np, "rates-ru", &len, ru_rates + 1);
+	mt76_apply_multi_array_limit(dest->ru[0], ARRAY_SIZE(dest->ru[0]),
+				     ARRAY_SIZE(dest->ru), val, len,
+				     target_power, txs_delta, &max_power);
 
 	return max_power;
 }
diff --git a/drivers/net/wireless/mediatek/mt76/mt76.h b/drivers/net/wireless/mediatek/mt76/mt76.h
index ece5b79a50e2..4571f0ed352c 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76.h
+++ b/drivers/net/wireless/mediatek/mt76/mt76.h
@@ -716,6 +716,7 @@ struct mt76_power_limits {
 	s8 cck[4];
 	s8 ofdm[8];
 	s8 mcs[4][10];
+	s8 ru[7][12];
 };
 
 enum mt76_phy_type {
-- 
2.30.2

[PATCH v3 4/7] mt76: mt7615: implement support for using DT rate power limits

[Lorenzo Bianconi]

From: Felix Fietkau <nbd@nbd.name>

Limits are used to update the channel max_power settings and also passed
to the firmware on channel changes

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
---
 .../net/wireless/mediatek/mt76/mt7615/init.c  | 10 ++-
 .../net/wireless/mediatek/mt76/mt7615/mcu.c   | 61 ++++++++++++++++++-
 2 files changed, 69 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/init.c b/drivers/net/wireless/mediatek/mt76/mt7615/init.c
index 1e418740c17b..e58f46d6a85b 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/init.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/init.c
@@ -252,6 +252,7 @@ void mt7615_init_txpower(struct mt7615_dev *dev,
 	int delta_idx, delta = mt76_tx_power_nss_delta(n_chains);
 	u8 *eep = (u8 *)dev->mt76.eeprom.data;
 	enum nl80211_band band = sband->band;
+	struct mt76_power_limits limits;
 	u8 rate_val;
 
 	delta_idx = mt7615_eeprom_get_power_delta_index(dev, band);
@@ -280,7 +281,11 @@ void mt7615_init_txpower(struct mt7615_dev *dev,
 			target_power = max(target_power, eep[index]);
 		}
 
-		target_power = DIV_ROUND_UP(target_power + delta, 2);
+		target_power = mt76_get_rate_power_limits(&dev->mphy, chan,
+							  &limits,
+							  target_power);
+		target_power += delta;
+		target_power = DIV_ROUND_UP(target_power, 2);
 		chan->max_power = min_t(int, chan->max_reg_power,
 					target_power);
 		chan->orig_mpwr = target_power;
@@ -311,6 +316,9 @@ mt7615_regd_notifier(struct wiphy *wiphy,
 	memcpy(dev->mt76.alpha2, request->alpha2, sizeof(dev->mt76.alpha2));
 	dev->mt76.region = request->dfs_region;
 
+	mt7615_init_txpower(dev, &mphy->sband_2g.sband);
+	mt7615_init_txpower(dev, &mphy->sband_5g.sband);
+
 	mt7615_mutex_acquire(dev);
 
 	if (chandef->chan->flags & IEEE80211_CHAN_RADAR)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c
index 6ca9e9840399..8c0a21e243db 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c
@@ -2135,16 +2135,75 @@ static void mt7615_mcu_set_txpower_sku(struct mt7615_phy *phy, u8 *sku)
 {
 	struct mt76_phy *mphy = phy->mt76;
 	struct ieee80211_hw *hw = mphy->hw;
+	struct mt76_power_limits limits;
+	s8 *limits_array = (s8 *)&limits;
 	int n_chains = hweight8(mphy->antenna_mask);
 	int tx_power;
 	int i;
+	static const u8 sku_mapping[] = {
+#define SKU_FIELD(_type, _field) \
+		[MT_SKU_##_type] = offsetof(struct mt76_power_limits, _field)
+		SKU_FIELD(CCK_1_2, cck[0]),
+		SKU_FIELD(CCK_55_11, cck[2]),
+		SKU_FIELD(OFDM_6_9, ofdm[0]),
+		SKU_FIELD(OFDM_12_18, ofdm[2]),
+		SKU_FIELD(OFDM_24_36, ofdm[4]),
+		SKU_FIELD(OFDM_48, ofdm[6]),
+		SKU_FIELD(OFDM_54, ofdm[7]),
+		SKU_FIELD(HT20_0_8, mcs[0][0]),
+		SKU_FIELD(HT20_32, ofdm[0]),
+		SKU_FIELD(HT20_1_2_9_10, mcs[0][1]),
+		SKU_FIELD(HT20_3_4_11_12, mcs[0][3]),
+		SKU_FIELD(HT20_5_13, mcs[0][5]),
+		SKU_FIELD(HT20_6_14, mcs[0][6]),
+		SKU_FIELD(HT20_7_15, mcs[0][7]),
+		SKU_FIELD(HT40_0_8, mcs[1][0]),
+		SKU_FIELD(HT40_32, ofdm[0]),
+		SKU_FIELD(HT40_1_2_9_10, mcs[1][1]),
+		SKU_FIELD(HT40_3_4_11_12, mcs[1][3]),
+		SKU_FIELD(HT40_5_13, mcs[1][5]),
+		SKU_FIELD(HT40_6_14, mcs[1][6]),
+		SKU_FIELD(HT40_7_15, mcs[1][7]),
+		SKU_FIELD(VHT20_0, mcs[0][0]),
+		SKU_FIELD(VHT20_1_2, mcs[0][1]),
+		SKU_FIELD(VHT20_3_4, mcs[0][3]),
+		SKU_FIELD(VHT20_5_6, mcs[0][5]),
+		SKU_FIELD(VHT20_7, mcs[0][7]),
+		SKU_FIELD(VHT20_8, mcs[0][8]),
+		SKU_FIELD(VHT20_9, mcs[0][9]),
+		SKU_FIELD(VHT40_0, mcs[1][0]),
+		SKU_FIELD(VHT40_1_2, mcs[1][1]),
+		SKU_FIELD(VHT40_3_4, mcs[1][3]),
+		SKU_FIELD(VHT40_5_6, mcs[1][5]),
+		SKU_FIELD(VHT40_7, mcs[1][7]),
+		SKU_FIELD(VHT40_8, mcs[1][8]),
+		SKU_FIELD(VHT40_9, mcs[1][9]),
+		SKU_FIELD(VHT80_0, mcs[2][0]),
+		SKU_FIELD(VHT80_1_2, mcs[2][1]),
+		SKU_FIELD(VHT80_3_4, mcs[2][3]),
+		SKU_FIELD(VHT80_5_6, mcs[2][5]),
+		SKU_FIELD(VHT80_7, mcs[2][7]),
+		SKU_FIELD(VHT80_8, mcs[2][8]),
+		SKU_FIELD(VHT80_9, mcs[2][9]),
+		SKU_FIELD(VHT160_0, mcs[3][0]),
+		SKU_FIELD(VHT160_1_2, mcs[3][1]),
+		SKU_FIELD(VHT160_3_4, mcs[3][3]),
+		SKU_FIELD(VHT160_5_6, mcs[3][5]),
+		SKU_FIELD(VHT160_7, mcs[3][7]),
+		SKU_FIELD(VHT160_8, mcs[3][8]),
+		SKU_FIELD(VHT160_9, mcs[3][9]),
+#undef SKU_FIELD
+	};
 
 	tx_power = hw->conf.power_level * 2 -
 		   mt76_tx_power_nss_delta(n_chains);
+
+	tx_power = mt76_get_rate_power_limits(mphy, mphy->chandef.chan,
+					      &limits, tx_power);
 	mphy->txpower_cur = tx_power;
 
 	for (i = 0; i < MT_SKU_1SS_DELTA; i++)
-		sku[i] = tx_power;
+		sku[i] = limits_array[sku_mapping[i]];
 
 	for (i = 0; i < 4; i++) {
 		int delta = 0;
-- 
2.30.2

[PATCH v3 5/7] mt76: mt7615: do not use mt7615 single-sku values for mt7663

[Lorenzo Bianconi]

mt7663 mcu relies on different APIs to configure APIs per-rate power limit
respect to mt7615 driver.

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
---
 drivers/net/wireless/mediatek/mt76/mt7615/mcu.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c
index 8c0a21e243db..195596194b51 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c
@@ -2202,6 +2202,11 @@ static void mt7615_mcu_set_txpower_sku(struct mt7615_phy *phy, u8 *sku)
 					      &limits, tx_power);
 	mphy->txpower_cur = tx_power;
 
+	if (is_mt7663(mphy->dev)) {
+		memset(sku, tx_power, MT_SKU_4SS_DELTA + 1);
+		return;
+	}
+
 	for (i = 0; i < MT_SKU_1SS_DELTA; i++)
 		sku[i] = limits_array[sku_mapping[i]];
 
-- 
2.30.2

[PATCH v3 6/7] mt76: introduce single-sku support for mt7663/mt7921

[Lorenzo Bianconi]

Introduce support for rate-txpower compensation for mt7663/mt7921 chipsets.
Rate-txpower limit is specified through dts

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
---
 .../net/wireless/mediatek/mt76/mt7615/init.c  |   5 +-
 .../net/wireless/mediatek/mt76/mt7615/main.c  |   4 +
 .../wireless/mediatek/mt76/mt76_connac_mcu.c  | 133 ++++++++++++++++++
 .../wireless/mediatek/mt76/mt76_connac_mcu.h  |  23 +++
 .../net/wireless/mediatek/mt76/mt7921/init.c  |   2 +
 .../net/wireless/mediatek/mt76/mt7921/main.c  |   4 +
 6 files changed, 170 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/init.c b/drivers/net/wireless/mediatek/mt76/mt7615/init.c
index e58f46d6a85b..d84662fb0304 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/init.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/init.c
@@ -323,8 +323,11 @@ mt7615_regd_notifier(struct wiphy *wiphy,
 
 	if (chandef->chan->flags & IEEE80211_CHAN_RADAR)
 		mt7615_dfs_init_radar_detector(phy);
-	if (mt7615_firmware_offload(phy->dev))
+
+	if (mt7615_firmware_offload(phy->dev)) {
 		mt76_connac_mcu_set_channel_domain(mphy);
+		mt76_connac_mcu_set_rate_txpower(mphy);
+	}
 
 	mt7615_mutex_release(dev);
 }
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/main.c b/drivers/net/wireless/mediatek/mt76/mt7615/main.c
index e30b256784e0..62d9df47a1f6 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/main.c
@@ -66,6 +66,10 @@ static int mt7615_start(struct ieee80211_hw *hw)
 		ret = mt76_connac_mcu_set_channel_domain(phy->mt76);
 		if (ret)
 			goto out;
+
+		ret = mt76_connac_mcu_set_rate_txpower(phy->mt76);
+		if (ret)
+			goto out;
 	}
 
 	ret = mt7615_mcu_set_chan_info(phy, MCU_EXT_CMD_SET_RX_PATH);
diff --git a/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c b/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c
index 4892728ad9bb..fdc64993e531 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c
@@ -1564,6 +1564,139 @@ 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_build_sku(struct mt76_dev *dev, s8 *sku,
+			  struct mt76_power_limits *limits,
+			  enum nl80211_band band)
+{
+	int max_power = is_mt7921(dev) ? 127 : 63;
+	int i, offset = sizeof(limits->cck);
+
+	memset(sku, max_power, MT_SKU_POWER_LIMIT);
+
+	if (band == NL80211_BAND_2GHZ) {
+		/* cck */
+		memcpy(sku, limits->cck, sizeof(limits->cck));
+	}
+
+	/* ofdm */
+	memcpy(&sku[offset], limits->ofdm, sizeof(limits->ofdm));
+	offset += sizeof(limits->ofdm);
+
+	/* ht */
+	for (i = 0; i < 2; i++) {
+		memcpy(&sku[offset], limits->mcs[i], 8);
+		offset += 8;
+	}
+	sku[offset++] = limits->mcs[0][0];
+
+	/* vht */
+	for (i = 0; i < ARRAY_SIZE(limits->mcs); i++) {
+		memcpy(&sku[offset], limits->mcs[i],
+		       ARRAY_SIZE(limits->mcs[i]));
+		offset += 12;
+	}
+
+	if (!is_mt7921(dev))
+		return;
+
+	/* he */
+	for (i = 0; i < ARRAY_SIZE(limits->ru); i++) {
+		memcpy(&sku[offset], limits->ru[i], ARRAY_SIZE(limits->ru[i]));
+		offset += ARRAY_SIZE(limits->ru[i]);
+	}
+}
+
+static int
+mt76_connac_mcu_rate_txpower_band(struct mt76_phy *phy,
+				  enum nl80211_band band)
+{
+	struct mt76_dev *dev = phy->dev;
+	int sku_len, batch_len = is_mt7921(dev) ? 8 : 16;
+	static const u8 chan_list_2ghz[] = {
+		1, 2,  3,  4,  5,  6,  7,
+		8, 9, 10, 11, 12, 13, 14
+	};
+	static const u8 chan_list_5ghz[] = {
+		 36,  38,  40,  42,  44,  46,  48,
+		 50,  52,  54,  56,  58,  60,  62,
+		 64, 100, 102, 104, 106, 108, 110,
+		112, 114, 116, 118, 120, 122, 124,
+		126, 128, 132, 134, 136, 138, 140,
+		142, 144, 149, 151, 153, 155, 157,
+		159, 161, 165
+	};
+	struct mt76_connac_sku_tlv sku_tlbv;
+	int i, n_chan, batch_size, idx = 0;
+	struct mt76_power_limits limits;
+	const u8 *ch_list;
+
+	sku_len = is_mt7921(dev) ? sizeof(sku_tlbv) : sizeof(sku_tlbv) - 92;
+
+	if (band == NL80211_BAND_2GHZ) {
+		n_chan = ARRAY_SIZE(chan_list_2ghz);
+		ch_list = chan_list_2ghz;
+	} else {
+		n_chan = ARRAY_SIZE(chan_list_5ghz);
+		ch_list = chan_list_5ghz;
+	}
+	batch_size = DIV_ROUND_UP(n_chan, batch_len);
+
+	for (i = 0; i < batch_size; i++) {
+		bool last_msg = i == batch_size - 1;
+		int num_ch = last_msg ? n_chan % batch_len : batch_len;
+		struct mt76_connac_tx_power_limit_tlv tx_power_tlv = {
+			.band = band == NL80211_BAND_2GHZ ? 1 : 2,
+			.n_chan = num_ch,
+			.last_msg = last_msg,
+		};
+		struct sk_buff *skb;
+		int j, err, msg_len;
+
+		msg_len = sizeof(tx_power_tlv) + num_ch * sizeof(sku_tlbv);
+		skb = mt76_mcu_msg_alloc(dev, NULL, msg_len);
+		if (!skb)
+			return -ENOMEM;
+
+		BUILD_BUG_ON(sizeof(dev->alpha2) > sizeof(tx_power_tlv.alpha2));
+		memcpy(tx_power_tlv.alpha2, dev->alpha2, sizeof(dev->alpha2));
+
+		skb_put_data(skb, &tx_power_tlv, sizeof(tx_power_tlv));
+		for (j = 0; j < num_ch; j++, idx++) {
+			struct ieee80211_channel chan = {
+				.hw_value = ch_list[idx],
+				.band = band,
+			};
+
+			mt76_get_rate_power_limits(phy, &chan, &limits, 127);
+
+			sku_tlbv.channel = ch_list[idx];
+			mt76_connac_mcu_build_sku(dev, sku_tlbv.pwr_limit,
+						  &limits, band);
+			skb_put_data(skb, &sku_tlbv, sku_len);
+		}
+
+		err = mt76_mcu_skb_send_msg(dev, skb,
+					    MCU_CMD_SET_RATE_TX_POWER, false);
+		if (err < 0)
+			return err;
+	}
+
+	return 0;
+}
+
+int mt76_connac_mcu_set_rate_txpower(struct mt76_phy *phy)
+{
+	int err;
+
+	err = mt76_connac_mcu_rate_txpower_band(phy, NL80211_BAND_2GHZ);
+	if (err < 0)
+		return err;
+
+	return mt76_connac_mcu_rate_txpower_band(phy, NL80211_BAND_5GHZ);
+}
+EXPORT_SYMBOL_GPL(mt76_connac_mcu_set_rate_txpower);
+
 #ifdef CONFIG_PM
 
 const struct wiphy_wowlan_support mt76_connac_wowlan_support = {
diff --git a/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.h b/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.h
index 6f9b7807305a..01c458e14dc7 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.h
+++ b/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.h
@@ -895,6 +895,28 @@ struct mt76_sta_cmd_info {
 	u8 rcpi;
 };
 
+#define MT_SKU_POWER_LIMIT	161
+
+struct mt76_connac_sku_tlv {
+	u8 channel;
+	s8 pwr_limit[MT_SKU_POWER_LIMIT];
+} __packed;
+
+struct mt76_connac_tx_power_limit_tlv {
+	/* DW0 - common info*/
+	u8 ver;
+	u8 pad0;
+	__le16 len;
+	/* DW1 - cmd hint */
+	u8 n_chan; /* # channel */
+	u8 band; /* 2.4GHz - 5GHz */
+	u8 last_msg;
+	u8 pad1;
+	/* DW3 */
+	u8 alpha2[4]; /* regulatory_request.alpha2 */
+	u8 pad2[32];
+} __packed;
+
 #define to_wcid_lo(id)		FIELD_GET(GENMASK(7, 0), (u16)id)
 #define to_wcid_hi(id)		FIELD_GET(GENMASK(9, 8), (u16)id)
 
@@ -997,4 +1019,5 @@ void mt76_connac_mcu_set_suspend_iter(void *priv, u8 *mac,
 int mt76_connac_mcu_chip_config(struct mt76_dev *dev);
 void mt76_connac_mcu_coredump_event(struct mt76_dev *dev, struct sk_buff *skb,
 				    struct mt76_connac_coredump *coredump);
+int mt76_connac_mcu_set_rate_txpower(struct mt76_phy *phy);
 #endif /* __MT76_CONNAC_MCU_H */
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/init.c b/drivers/net/wireless/mediatek/mt76/mt7921/init.c
index 7344cdfb5e47..6dc96dd4651c 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/init.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/init.c
@@ -58,12 +58,14 @@ mt7921_regd_notifier(struct wiphy *wiphy,
 {
 	struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
 	struct mt7921_dev *dev = mt7921_hw_dev(hw);
+	struct mt7921_phy *phy = mt7921_hw_phy(hw);
 
 	memcpy(dev->mt76.alpha2, request->alpha2, sizeof(dev->mt76.alpha2));
 	dev->mt76.region = request->dfs_region;
 
 	mt7921_mutex_acquire(dev);
 	mt76_connac_mcu_set_channel_domain(hw->priv);
+	mt76_connac_mcu_set_rate_txpower(phy->mt76);
 	mt7921_mutex_release(dev);
 }
 
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/main.c b/drivers/net/wireless/mediatek/mt76/mt7921/main.c
index d9ec7d9bb1c4..8e1891da5c6a 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/main.c
@@ -182,6 +182,10 @@ int __mt7921_start(struct mt7921_phy *phy)
 	if (err)
 		return err;
 
+	err = mt76_connac_mcu_set_rate_txpower(phy->mt76);
+	if (err)
+		return err;
+
 	mt7921_mac_reset_counters(phy);
 	set_bit(MT76_STATE_RUNNING, &mphy->state);
 
-- 
2.30.2

[PATCH v3 7/7] mt76: mt7921: add dumping Tx power table

[Lorenzo Bianconi]

From: Sean Wang <sean.wang@mediatek.com>

Dump the tx power table saved in offload firmware.

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
---
 .../wireless/mediatek/mt76/mt76_connac_mcu.h  |  1 +
 .../wireless/mediatek/mt76/mt7921/debugfs.c   | 79 +++++++++++++++++++
 .../net/wireless/mediatek/mt76/mt7921/mcu.c   | 23 ++++++
 .../net/wireless/mediatek/mt76/mt7921/mcu.h   | 17 ++++
 .../wireless/mediatek/mt76/mt7921/mt7921.h    | 31 ++++++++
 5 files changed, 151 insertions(+)

diff --git a/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.h b/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.h
index 01c458e14dc7..c056eca6816a 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.h
+++ b/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.h
@@ -564,6 +564,7 @@ enum {
 	MCU_CMD_CHIP_CONFIG = MCU_CE_PREFIX | 0xca,
 	MCU_CMD_FWLOG_2_HOST = MCU_CE_PREFIX | 0xc5,
 	MCU_CMD_GET_WTBL = MCU_CE_PREFIX | 0xcd,
+	MCU_CMD_GET_TXPWR = MCU_CE_PREFIX | 0xd0,
 };
 
 enum {
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/debugfs.c b/drivers/net/wireless/mediatek/mt76/mt7921/debugfs.c
index b2e8d698e019..024524173115 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/debugfs.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/debugfs.c
@@ -158,6 +158,83 @@ mt7921_queues_read(struct seq_file *s, void *data)
 	return 0;
 }
 
+static void
+mt7921_seq_puts_array(struct seq_file *file, const char *str,
+		      s8 *val, int len)
+{
+	int i;
+
+	seq_printf(file, "%-16s:", str);
+	for (i = 0; i < len; i++)
+		if (val[i] == 127)
+			seq_printf(file, " %6s", "N.A");
+		else
+			seq_printf(file, " %6d", val[i]);
+	seq_puts(file, "\n");
+}
+
+#define mt7921_print_txpwr_entry(prefix, rate)				\
+({									\
+	mt7921_seq_puts_array(s, #prefix " (user)",			\
+			      txpwr.data[TXPWR_USER].rate,		\
+			      ARRAY_SIZE(txpwr.data[TXPWR_USER].rate)); \
+	mt7921_seq_puts_array(s, #prefix " (eeprom)",			\
+			      txpwr.data[TXPWR_EEPROM].rate,		\
+			      ARRAY_SIZE(txpwr.data[TXPWR_EEPROM].rate)); \
+	mt7921_seq_puts_array(s, #prefix " (tmac)",			\
+			      txpwr.data[TXPWR_MAC].rate,		\
+			      ARRAY_SIZE(txpwr.data[TXPWR_MAC].rate));	\
+})
+
+static int
+mt7921_txpwr(struct seq_file *s, void *data)
+{
+	struct mt7921_dev *dev = dev_get_drvdata(s->private);
+	struct mt7921_txpwr txpwr;
+	int ret;
+
+	ret = mt7921_get_txpwr_info(dev, &txpwr);
+	if (ret)
+		return ret;
+
+	seq_printf(s, "Tx power table (channel %d)\n", txpwr.ch);
+	seq_printf(s, "%-16s  %6s %6s %6s %6s\n",
+		   " ", "1m", "2m", "5m", "11m");
+	mt7921_print_txpwr_entry(CCK, cck);
+
+	seq_printf(s, "%-16s  %6s %6s %6s %6s %6s %6s %6s %6s\n",
+		   " ", "6m", "9m", "12m", "18m", "24m", "36m",
+		   "48m", "54m");
+	mt7921_print_txpwr_entry(OFDM, ofdm);
+
+	seq_printf(s, "%-16s  %6s %6s %6s %6s %6s %6s %6s %6s\n",
+		   " ", "mcs0", "mcs1", "mcs2", "mcs3", "mcs4", "mcs5",
+		   "mcs6", "mcs7");
+	mt7921_print_txpwr_entry(HT20, ht20);
+
+	seq_printf(s, "%-16s  %6s %6s %6s %6s %6s %6s %6s %6s %6s\n",
+		   " ", "mcs0", "mcs1", "mcs2", "mcs3", "mcs4", "mcs5",
+		   "mcs6", "mcs7", "mcs32");
+	mt7921_print_txpwr_entry(HT40, ht40);
+
+	seq_printf(s, "%-16s  %6s %6s %6s %6s %6s %6s %6s %6s %6s %6s %6s %6s\n",
+		   " ", "mcs0", "mcs1", "mcs2", "mcs3", "mcs4", "mcs5",
+		   "mcs6", "mcs7", "mcs8", "mcs9", "mcs10", "mcs11");
+	mt7921_print_txpwr_entry(VHT20, vht20);
+	mt7921_print_txpwr_entry(VHT40, vht40);
+	mt7921_print_txpwr_entry(VHT80, vht80);
+	mt7921_print_txpwr_entry(VHT160, vht160);
+	mt7921_print_txpwr_entry(HE26, he26);
+	mt7921_print_txpwr_entry(HE52, he52);
+	mt7921_print_txpwr_entry(HE106, he106);
+	mt7921_print_txpwr_entry(HE242, he242);
+	mt7921_print_txpwr_entry(HE484, he484);
+	mt7921_print_txpwr_entry(HE996, he996);
+	mt7921_print_txpwr_entry(HE996x2, he996x2);
+
+	return 0;
+}
+
 static int
 mt7921_pm_set(void *data, u64 val)
 {
@@ -237,6 +314,8 @@ int mt7921_init_debugfs(struct mt7921_dev *dev)
 				    mt7921_queues_read);
 	debugfs_create_devm_seqfile(dev->mt76.dev, "acq", dir,
 				    mt7921_queues_acq);
+	debugfs_create_devm_seqfile(dev->mt76.dev, "txpower_sku", dir,
+				    mt7921_txpwr);
 	debugfs_create_file("tx_stats", 0400, dir, dev, &fops_tx_stats);
 	debugfs_create_file("fw_debug", 0600, dir, dev, &fops_fw_debug);
 	debugfs_create_file("runtime-pm", 0600, dir, dev, &fops_pm);
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c
index b233b12860ef..b5cee20c5f27 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c
@@ -1358,3 +1358,26 @@ int mt7921_mcu_update_arp_filter(struct ieee80211_hw *hw,
 	return mt76_mcu_skb_send_msg(&dev->mt76, skb, MCU_UNI_CMD_OFFLOAD,
 				     true);
 }
+
+int mt7921_get_txpwr_info(struct mt7921_dev *dev, struct mt7921_txpwr *txpwr)
+{
+	struct mt7921_txpwr_event *event;
+	struct mt7921_txpwr_req req = {
+		.dbdc_idx = 0,
+	};
+	struct sk_buff *skb;
+	int ret;
+
+	ret = mt76_mcu_send_and_get_msg(&dev->mt76, MCU_CMD_GET_TXPWR,
+					&req, sizeof(req), true, &skb);
+	if (ret)
+		return ret;
+
+	event = (struct mt7921_txpwr_event *)skb->data;
+	WARN_ON(skb->len != le16_to_cpu(event->len));
+	memcpy(txpwr, &event->txpwr, sizeof(event->txpwr));
+
+	dev_kfree_skb(skb);
+
+	return 0;
+}
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/mcu.h b/drivers/net/wireless/mediatek/mt76/mt7921/mcu.h
index af8b42983a00..d980e92028ba 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/mcu.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/mcu.h
@@ -85,6 +85,7 @@ enum {
 	MCU_EVENT_CH_PRIVILEGE = 0x18,
 	MCU_EVENT_SCHED_SCAN_DONE = 0x23,
 	MCU_EVENT_DBG_MSG = 0x27,
+	MCU_EVENT_TXPWR = 0xd0,
 	MCU_EVENT_COREDUMP = 0xf0,
 };
 
@@ -389,4 +390,20 @@ struct mt7921_mcu_wlan_info {
 	__le32 wlan_idx;
 	struct mt7921_mcu_wlan_info_event event;
 } __packed;
+
+struct mt7921_txpwr_req {
+	u8 ver;
+	u8 action;
+	__le16 len;
+	u8 dbdc_idx;
+	u8 rsv[3];
+} __packed;
+
+struct mt7921_txpwr_event {
+	u8 ver;
+	u8 action;
+	__le16 len;
+	struct mt7921_txpwr txpwr;
+} __packed;
+
 #endif
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/mt7921.h b/drivers/net/wireless/mediatek/mt76/mt7921/mt7921.h
index e3d83d3d954c..5cc01efee989 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/mt7921.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/mt7921.h
@@ -172,6 +172,36 @@ struct mt7921_dev {
 	struct mt76_connac_coredump coredump;
 };
 
+enum {
+	TXPWR_USER,
+	TXPWR_EEPROM,
+	TXPWR_MAC,
+	TXPWR_MAX_NUM,
+};
+
+struct mt7921_txpwr {
+	u8 ch;
+	u8 rsv[3];
+	struct {
+		u8 ch;
+		u8 cck[4];
+		u8 ofdm[8];
+		u8 ht20[8];
+		u8 ht40[9];
+		u8 vht20[12];
+		u8 vht40[12];
+		u8 vht80[12];
+		u8 vht160[12];
+		u8 he26[12];
+		u8 he52[12];
+		u8 he106[12];
+		u8 he242[12];
+		u8 he484[12];
+		u8 he996[12];
+		u8 he996x2[12];
+	} data[TXPWR_MAX_NUM];
+};
+
 enum {
 	MT_LMAC_AC00,
 	MT_LMAC_AC01,
@@ -352,4 +382,5 @@ int mt7921_mcu_update_arp_filter(struct ieee80211_hw *hw,
 				 struct ieee80211_vif *vif,
 				 struct ieee80211_bss_conf *info);
 int mt7921_wfsys_reset(struct mt7921_dev *dev);
+int mt7921_get_txpwr_info(struct mt7921_dev *dev, struct mt7921_txpwr *txpwr);
 #endif
-- 
2.30.2

Re: [PATCH v3 1/7] dt-bindings:net:wireless:mediatek,mt76: introduce power-limits node

[Rob Herring]

On Tue, 13 Apr 2021 11:08:35 +0200, Lorenzo Bianconi wrote:
> Introduce power-limits node in mt76 binding in order to specify
> per-rate power limit values for each 802.11n/802.11ac rate
> 
> Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
> ---
>  .../bindings/net/wireless/mediatek,mt76.yaml  | 107 ++++++++++++++++++
>  1 file changed, 107 insertions(+)
> 

Reviewed-by: Rob Herring <robh@kernel.org>