wifi: mt76: mt7915: rework mt7915_mcu_set_thermal_throttling

This patch includes 2 changes:
1. Firmware expects to disable thermal protect first before
reconfiguring.
2. Separate setting thermal_protect and setting thermal_tx_duty into
different functions. These two firmware commands do not need to send
together.

Fixes: 34b877d9 ("mt76: mt7915: add thermal cooling device support")
Reviewed-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Howard Hsu <howard-yh.hsu@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt7915/init.c

@@ -134,9 +134,6 @@ mt7915_thermal_set_cur_throttle_state(struct thermal_cooling_device *cdev,
 	if (state > MT7915_CDEV_THROTTLE_MAX)
 		return -EINVAL;
 
-	if (phy->throttle_temp[0] > phy->throttle_temp[1])
-		return 0;
-
 	if (state == phy->cdev_state)
 		return 0;
 

drivers/net/wireless/mediatek/mt76/mt7915/main.c

@@ -60,6 +60,11 @@ int mt7915_run(struct ieee80211_hw *hw)
 	ret = mt7915_mcu_set_thermal_throttling(phy,
 						MT7915_THERMAL_THROTTLE_MAX);
 
+	if (ret)
+		goto out;
+
+	ret = mt7915_mcu_set_thermal_protect(phy);
+
 	if (ret)
 		goto out;
 

drivers/net/wireless/mediatek/mt76/mt7915/mcu.c

@@ -3077,6 +3077,29 @@ int mt7915_mcu_get_temperature(struct mt7915_phy *phy)
 }
 
 int mt7915_mcu_set_thermal_throttling(struct mt7915_phy *phy, u8 state)
+{
+	struct mt7915_dev *dev = phy->dev;
+	struct mt7915_mcu_thermal_ctrl req = {
+		.band_idx = phy->mt76->band_idx,
+		.ctrl_id = THERMAL_PROTECT_DUTY_CONFIG,
+	};
+	int level, ret;
+
+	/* set duty cycle and level */
+	for (level = 0; level < 4; level++) {
+		req.duty.duty_level = level;
+		req.duty.duty_cycle = state;
+		state /= 2;
+
+		ret = mt76_mcu_send_msg(&dev->mt76, MCU_EXT_CMD(THERMAL_PROT),
+					&req, sizeof(req), false);
+		if (ret)
+			return ret;
+	}
+	return 0;
+}
+
+int mt7915_mcu_set_thermal_protect(struct mt7915_phy *phy)
 {
 	struct mt7915_dev *dev = phy->dev;
 	struct {
@@ -3089,29 +3112,18 @@ int mt7915_mcu_set_thermal_throttling(struct mt7915_phy *phy, u8 state)
 	} __packed req = {
 		.ctrl = {
 			.band_idx = phy->mt76->band_idx,
+			.type.protect_type = 1,
+			.type.trigger_type = 1,
 		},
 	};
-	int level;
-
-	if (!state) {
-		req.ctrl.ctrl_id = THERMAL_PROTECT_DISABLE;
-		goto out;
-	}
-
-	/* set duty cycle and level */
-	for (level = 0; level < 4; level++) {
-		int ret;
+	int ret;
 
-		req.ctrl.ctrl_id = THERMAL_PROTECT_DUTY_CONFIG;
-		req.ctrl.duty.duty_level = level;
-		req.ctrl.duty.duty_cycle = state;
-		state /= 2;
+	req.ctrl.ctrl_id = THERMAL_PROTECT_DISABLE;
+	ret = mt76_mcu_send_msg(&dev->mt76, MCU_EXT_CMD(THERMAL_PROT),
+				&req, sizeof(req.ctrl), false);
 
-		ret = mt76_mcu_send_msg(&dev->mt76, MCU_EXT_CMD(THERMAL_PROT),
-					&req, sizeof(req.ctrl), false);
-		if (ret)
-			return ret;
-	}
+	if (ret)
+		return ret;
 
 	/* set high-temperature trigger threshold */
 	req.ctrl.ctrl_id = THERMAL_PROTECT_ENABLE;
@@ -3120,10 +3132,6 @@ int mt7915_mcu_set_thermal_throttling(struct mt7915_phy *phy, u8 state)
 	req.trigger_temp = cpu_to_le32(phy->throttle_temp[1]);
 	req.sustain_time = cpu_to_le16(10);
 
-out:
-	req.ctrl.type.protect_type = 1;
-	req.ctrl.type.trigger_type = 1;
-
 	return mt76_mcu_send_msg(&dev->mt76, MCU_EXT_CMD(THERMAL_PROT),
 				 &req, sizeof(req), false);
 }

drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h

@@ -543,6 +543,7 @@ int mt7915_mcu_apply_tx_dpd(struct mt7915_phy *phy);
 int mt7915_mcu_get_chan_mib_info(struct mt7915_phy *phy, bool chan_switch);
 int mt7915_mcu_get_temperature(struct mt7915_phy *phy);
 int mt7915_mcu_set_thermal_throttling(struct mt7915_phy *phy, u8 state);
+int mt7915_mcu_set_thermal_protect(struct mt7915_phy *phy);
 int mt7915_mcu_get_rx_rate(struct mt7915_phy *phy, struct ieee80211_vif *vif,
 			   struct ieee80211_sta *sta, struct rate_info *rate);
 int mt7915_mcu_rdd_background_enable(struct mt7915_phy *phy,