From: Lorenzo Bianconi <lorenzo@kernel.org>
Date: Sun, 18 Apr 2021 16:45:45 +0000 (+0200)
Subject: mt76: mt7921: enable sw interrupts
X-Git-Tag: accepted/tizen/unified/20230118.172025~7335^2~53^2^2~23
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=dc5d5f9d3fe4d0c26b4e4beb25d056ffcc5fbf02;p=platform%2Fkernel%2Flinux-rpi.git

mt76: mt7921: enable sw interrupts

Enable sw interrupts in order to wake the device from deep sleep
receiving packets

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
---

diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/dma.c b/drivers/net/wireless/mediatek/mt76/mt7921/dma.c
index c2697961..7ada833 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/dma.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/dma.c
@@ -351,6 +351,7 @@ int mt7921_dma_init(struct mt7921_dev *dev)
 	/* enable interrupts for TX/RX rings */
 	mt7921_irq_enable(dev, MT_INT_RX_DONE_ALL | MT_INT_TX_DONE_ALL |
 			  MT_INT_MCU_CMD);
+	mt76_set(dev, MT_MCU2HOST_SW_INT_ENA, MT_MCU_CMD_WAKE_RX_PCIE);
 
 	return 0;
 }
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/mac.c b/drivers/net/wireless/mediatek/mt76/mt7921/mac.c
index 7b532318..8770e0d 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/mac.c
@@ -1276,6 +1276,7 @@ mt7921_dma_reset(struct mt7921_dev *dev)
 	mt7921_irq_enable(dev,
 			  MT_INT_RX_DONE_ALL | MT_INT_TX_DONE_ALL |
 			  MT_INT_MCU_CMD);
+	mt76_set(dev, MT_MCU2HOST_SW_INT_ENA, MT_MCU_CMD_WAKE_RX_PCIE);
 }
 
 void mt7921_tx_token_put(struct mt7921_dev *dev)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/pci.c b/drivers/net/wireless/mediatek/mt76/mt7921/pci.c
index 40e2086..d5da98d 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/pci.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/pci.c
@@ -61,6 +61,18 @@ static void mt7921_irq_tasklet(unsigned long data)
 	if (intr & MT_INT_TX_DONE_MCU)
 		mask |= MT_INT_TX_DONE_MCU;
 
+	if (intr & MT_INT_MCU_CMD) {
+		u32 intr_sw;
+
+		intr_sw = mt76_rr(dev, MT_MCU_CMD);
+		/* ack MCU2HOST_SW_INT_STA */
+		mt76_wr(dev, MT_MCU_CMD, intr_sw);
+		if (intr_sw & MT_MCU_CMD_WAKE_RX_PCIE) {
+			mask |= MT_INT_RX_DONE_DATA;
+			intr |= MT_INT_RX_DONE_DATA;
+		}
+	}
+
 	mt76_set_irq_mask(&dev->mt76, MT_WFDMA0_HOST_INT_ENA, mask, 0);
 
 	if (intr & MT_INT_TX_DONE_ALL)
@@ -253,6 +265,7 @@ static int mt7921_pci_resume(struct pci_dev *pdev)
 	mt76_wr(dev, MT_PCIE_MAC_INT_ENABLE, 0xff);
 	mt7921_irq_enable(dev, MT_INT_RX_DONE_ALL | MT_INT_TX_DONE_ALL |
 			  MT_INT_MCU_CMD);
+	mt76_set(dev, MT_MCU2HOST_SW_INT_ENA, MT_MCU_CMD_WAKE_RX_PCIE);
 
 	/* put dma enabled */
 	mt76_set(dev, MT_WFDMA0_GLO_CFG,
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/regs.h b/drivers/net/wireless/mediatek/mt76/mt7921/regs.h
index 76ecfea..b6944c8 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/regs.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/regs.h
@@ -251,13 +251,16 @@
 #define MT_WFDMA0_BUSY_ENA_TX_FIFO1	BIT(1)
 #define MT_WFDMA0_BUSY_ENA_RX_FIFO	BIT(2)
 
-#define MT_MCU_CMD                     MT_WFDMA0(0x1f0)
-#define MT_MCU_CMD_STOP_DMA_FW_RELOAD  BIT(1)
-#define MT_MCU_CMD_STOP_DMA            BIT(2)
-#define MT_MCU_CMD_RESET_DONE          BIT(3)
-#define MT_MCU_CMD_RECOVERY_DONE       BIT(4)
-#define MT_MCU_CMD_NORMAL_STATE	       BIT(5)
-#define MT_MCU_CMD_ERROR_MASK          GENMASK(5, 1)
+#define MT_MCU_CMD			MT_WFDMA0(0x1f0)
+#define MT_MCU_CMD_WAKE_RX_PCIE		BIT(0)
+#define MT_MCU_CMD_STOP_DMA_FW_RELOAD	BIT(1)
+#define MT_MCU_CMD_STOP_DMA		BIT(2)
+#define MT_MCU_CMD_RESET_DONE		BIT(3)
+#define MT_MCU_CMD_RECOVERY_DONE	BIT(4)
+#define MT_MCU_CMD_NORMAL_STATE		BIT(5)
+#define MT_MCU_CMD_ERROR_MASK		GENMASK(5, 1)
+
+#define MT_MCU2HOST_SW_INT_ENA		MT_WFDMA0(0x1f4)
 
 #define MT_WFDMA0_HOST_INT_STA		MT_WFDMA0(0x200)
 #define HOST_RX_DONE_INT_STS0		BIT(0)	/* Rx mcu */