wifi: mt76: mt7915: enable per-phy led support

Introduce the capability to support per-phy led blinking. This is needed
for devices supporting dbdc.
Tested-by: Frank Wunderlich <frank-w@public-files.de>
Co-developed-by: Ryder Lee <ryder.Lee@mediatek.com>
Signed-off-by: Ryder Lee <ryder.Lee@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mac80211.c

@@ -523,6 +523,12 @@ int mt76_register_phy(struct mt76_phy *phy, bool vht,
 			return ret;
 	}
 
+	if (IS_ENABLED(CONFIG_MT76_LEDS)) {
+		ret = mt76_led_init(phy);
+		if (ret)
+			return ret;
+	}
+
 	wiphy_read_of_freq_limits(phy->hw->wiphy);
 	mt76_check_sband(phy, &phy->sband_2g, NL80211_BAND_2GHZ);
 	mt76_check_sband(phy, &phy->sband_5g, NL80211_BAND_5GHZ);
@@ -542,6 +548,8 @@ void mt76_unregister_phy(struct mt76_phy *phy)
 {
 	struct mt76_dev *dev = phy->dev;
 
+	if (IS_ENABLED(CONFIG_MT76_LEDS))
+		mt76_led_cleanup(phy);
 	mt76_tx_status_check(dev, true);
 	ieee80211_unregister_hw(phy->hw);
 	dev->phys[phy->band_idx] = NULL;

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

@@ -215,24 +215,25 @@ static void mt7915_led_set_config(struct led_classdev *led_cdev,
 	mphy = container_of(led_cdev, struct mt76_phy, leds.cdev);
 	dev = container_of(mphy->dev, struct mt7915_dev, mt76);
 
-	/* select TX blink mode, 2: only data frames */
-	mt76_rmw_field(dev, MT_TMAC_TCR0(0), MT_TMAC_TCR0_TX_BLINK, 2);
+	/* set PWM mode */
+	val = FIELD_PREP(MT_LED_STATUS_DURATION, 0xffff) |
+	      FIELD_PREP(MT_LED_STATUS_OFF, delay_off) |
+	      FIELD_PREP(MT_LED_STATUS_ON, delay_on);
+	mt76_wr(dev, MT_LED_STATUS_0(mphy->band_idx), val);
+	mt76_wr(dev, MT_LED_STATUS_1(mphy->band_idx), val);
 
 	/* enable LED */
-	mt76_wr(dev, MT_LED_EN(0), 1);
-
-	/* set LED Tx blink on/off time */
-	val = FIELD_PREP(MT_LED_TX_BLINK_ON_MASK, delay_on) |
-	      FIELD_PREP(MT_LED_TX_BLINK_OFF_MASK, delay_off);
-	mt76_wr(dev, MT_LED_TX_BLINK(0), val);
+	mt76_wr(dev, MT_LED_EN(mphy->band_idx), 1);
 
 	/* control LED */
-	val = MT_LED_CTRL_BLINK_MODE | MT_LED_CTRL_KICK;
-	if (mphy->leds.al)
+	val = MT_LED_CTRL_KICK;
+	if (dev->mphy.leds.al)
 		val |= MT_LED_CTRL_POLARITY;
+	if (mphy->band_idx)
+		val |= MT_LED_CTRL_BAND;
 
-	mt76_wr(dev, MT_LED_CTRL(0), val);
-	mt76_clear(dev, MT_LED_CTRL(0), MT_LED_CTRL_KICK);
+	mt76_wr(dev, MT_LED_CTRL(mphy->band_idx), val);
+	mt76_clear(dev, MT_LED_CTRL(mphy->band_idx), MT_LED_CTRL_KICK);
 }
 
 static int mt7915_led_set_blink(struct led_classdev *led_cdev,
@@ -319,9 +320,10 @@ mt7915_regd_notifier(struct wiphy *wiphy,
 }
 
 static void
-mt7915_init_wiphy(struct ieee80211_hw *hw)
+mt7915_init_wiphy(struct mt7915_phy *phy)
 {
-	struct mt7915_phy *phy = mt7915_hw_phy(hw);
+	struct mt76_phy *mphy = phy->mt76;
+	struct ieee80211_hw *hw = mphy->hw;
 	struct mt76_dev *mdev = &phy->dev->mt76;
 	struct wiphy *wiphy = hw->wiphy;
 	struct mt7915_dev *dev = phy->dev;
@@ -415,6 +417,12 @@ mt7915_init_wiphy(struct ieee80211_hw *hw)
 
 	wiphy->available_antennas_rx = phy->mt76->antenna_mask;
 	wiphy->available_antennas_tx = phy->mt76->antenna_mask;
+
+	/* init led callbacks */
+	if (IS_ENABLED(CONFIG_MT76_LEDS)) {
+		mphy->leds.cdev.brightness_set = mt7915_led_set_brightness;
+		mphy->leds.cdev.blink_set = mt7915_led_set_blink;
+	}
 }
 
 static void
@@ -473,6 +481,72 @@ mt7915_mac_init_band(struct mt7915_dev *dev, u8 band)
 	mt76_rmw(dev, MT_WTBLOFF_TOP_RSCR(band), mask, set);
 }
 
+static void
+mt7915_init_led_mux(struct mt7915_dev *dev)
+{
+	if (!IS_ENABLED(CONFIG_MT76_LEDS))
+		return;
+
+	if (dev->dbdc_support) {
+		switch (mt76_chip(&dev->mt76)) {
+		case 0x7915:
+			mt76_rmw_field(dev, MT_LED_GPIO_MUX2,
+				       GENMASK(11, 8), 4);
+			mt76_rmw_field(dev, MT_LED_GPIO_MUX3,
+				       GENMASK(11, 8), 4);
+			break;
+		case 0x7986:
+			mt76_rmw_field(dev, MT_LED_GPIO_MUX0,
+				       GENMASK(7, 4), 1);
+			mt76_rmw_field(dev, MT_LED_GPIO_MUX0,
+				       GENMASK(11, 8), 1);
+			break;
+		case 0x7916:
+			mt76_rmw_field(dev, MT_LED_GPIO_MUX1,
+				       GENMASK(27, 24), 3);
+			mt76_rmw_field(dev, MT_LED_GPIO_MUX1,
+				       GENMASK(31, 28), 3);
+			break;
+		default:
+			break;
+		}
+	} else if (dev->mphy.leds.pin) {
+		switch (mt76_chip(&dev->mt76)) {
+		case 0x7915:
+			mt76_rmw_field(dev, MT_LED_GPIO_MUX3,
+				       GENMASK(11, 8), 4);
+			break;
+		case 0x7986:
+			mt76_rmw_field(dev, MT_LED_GPIO_MUX0,
+				       GENMASK(11, 8), 1);
+			break;
+		case 0x7916:
+			mt76_rmw_field(dev, MT_LED_GPIO_MUX1,
+				       GENMASK(31, 28), 3);
+			break;
+		default:
+			break;
+		}
+	} else {
+		switch (mt76_chip(&dev->mt76)) {
+		case 0x7915:
+			mt76_rmw_field(dev, MT_LED_GPIO_MUX2,
+				       GENMASK(11, 8), 4);
+			break;
+		case 0x7986:
+			mt76_rmw_field(dev, MT_LED_GPIO_MUX0,
+				       GENMASK(7, 4), 1);
+			break;
+		case 0x7916:
+			mt76_rmw_field(dev, MT_LED_GPIO_MUX1,
+				       GENMASK(27, 24), 3);
+			break;
+		default:
+			break;
+		}
+	}
+}
+
 void mt7915_mac_init(struct mt7915_dev *dev)
 {
 	int i;
@@ -497,10 +571,7 @@ void mt7915_mac_init(struct mt7915_dev *dev)
 	for (i = 0; i < 2; i++)
 		mt7915_mac_init_band(dev, i);
 
-	if (IS_ENABLED(CONFIG_MT76_LEDS)) {
-		i = dev->mphy.leds.pin ? MT_LED_GPIO_MUX3 : MT_LED_GPIO_MUX2;
-		mt76_rmw_field(dev, i, MT_LED_GPIO_SEL_MASK, 4);
-	}
+	mt7915_init_led_mux(dev);
 }
 
 int mt7915_txbf_init(struct mt7915_dev *dev)
@@ -569,7 +640,7 @@ mt7915_register_ext_phy(struct mt7915_dev *dev, struct mt7915_phy *phy)
 	mt76_eeprom_override(mphy);
 
 	/* init wiphy according to mphy and phy */
-	mt7915_init_wiphy(mphy->hw);
+	mt7915_init_wiphy(phy);
 
 	ret = mt76_register_phy(mphy, true, mt76_rates,
 				ARRAY_SIZE(mt76_rates));
@@ -1104,7 +1175,6 @@ static void mt7915_stop_hardware(struct mt7915_dev *dev)
 
 int mt7915_register_device(struct mt7915_dev *dev)
 {
-	struct ieee80211_hw *hw = mt76_hw(dev);
 	struct mt7915_phy *phy2;
 	int ret;
 
@@ -1133,18 +1203,12 @@ int mt7915_register_device(struct mt7915_dev *dev)
 	if (ret)
 		goto free_phy2;
 
-	mt7915_init_wiphy(hw);
+	mt7915_init_wiphy(&dev->phy);
 
 #ifdef CONFIG_NL80211_TESTMODE
 	dev->mt76.test_ops = &mt7915_testmode_ops;
 #endif
 
-	/* init led callbacks */
-	if (IS_ENABLED(CONFIG_MT76_LEDS)) {
-		dev->mphy.leds.cdev.brightness_set = mt7915_led_set_brightness;
-		dev->mphy.leds.cdev.blink_set = mt7915_led_set_blink;
-	}
-
 	ret = mt76_register_device(&dev->mt76, true, mt76_rates,
 				   ARRAY_SIZE(mt76_rates));
 	if (ret)

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

@@ -1054,6 +1054,7 @@ enum offs_rev {
 
 #define MT_LED_CTRL(_n)			MT_LED_PHYS(0x00 + ((_n) * 4))
 #define MT_LED_CTRL_KICK		BIT(7)
+#define MT_LED_CTRL_BAND		BIT(4)
 #define MT_LED_CTRL_BLINK_MODE		BIT(2)
 #define MT_LED_CTRL_POLARITY		BIT(1)
 
@@ -1061,11 +1062,18 @@ enum offs_rev {
 #define MT_LED_TX_BLINK_ON_MASK		GENMASK(7, 0)
 #define MT_LED_TX_BLINK_OFF_MASK        GENMASK(15, 8)
 
+#define MT_LED_STATUS_0(_n)		MT_LED_PHYS(0x20 + ((_n) * 8))
+#define MT_LED_STATUS_1(_n)		MT_LED_PHYS(0x24 + ((_n) * 8))
+#define MT_LED_STATUS_OFF		GENMASK(31, 24)
+#define MT_LED_STATUS_ON		GENMASK(23, 16)
+#define MT_LED_STATUS_DURATION		GENMASK(15, 0)
+
 #define MT_LED_EN(_n)			MT_LED_PHYS(0x40 + ((_n) * 4))
 
+#define MT_LED_GPIO_MUX0		0x70005050 /* GPIO 1 and GPIO 2 */
+#define MT_LED_GPIO_MUX1		0x70005054 /* GPIO 14 and 15 */
 #define MT_LED_GPIO_MUX2                0x70005058 /* GPIO 18 */
-#define MT_LED_GPIO_MUX3                0x7000505C /* GPIO 26 */
-#define MT_LED_GPIO_SEL_MASK            GENMASK(11, 8)
+#define MT_LED_GPIO_MUX3		0x7000505c /* GPIO 26 */
 
 /* MT TOP */
 #define MT_TOP_BASE			0x18060000