netdev - [PATCH net-next v2 4/7] net: airoha: npu: Add wlan irq management callbacks

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Message-Id: <20250705-airoha-en7581-wlan-offlaod-v2-4-3cf32785e381@kernel.org>
Date: Sat, 05 Jul 2025 23:09:48 +0200
From: Lorenzo Bianconi <lorenzo@...nel.org>
To: Andrew Lunn <andrew+netdev@...n.ch>, 
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Lorenzo Bianconi <lorenzo@...nel.org>
Cc: linux-arm-kernel@...ts.infradead.org, 
 linux-mediatek@...ts.infradead.org, netdev@...r.kernel.org, 
 devicetree@...r.kernel.org, Simon Horman <horms@...nel.org>
Subject: [PATCH net-next v2 4/7] net: airoha: npu: Add wlan irq management
 callbacks

Introduce callbacks used by the MT76 driver to configure NPU SoC
interrupts. This is a preliminary patch to enable wlan flowtable
offload for EN7581 SoC with MT76 driver.

Reviewed-by: Simon Horman <horms@...nel.org>
Signed-off-by: Lorenzo Bianconi <lorenzo@...nel.org>
---
 drivers/net/ethernet/airoha/airoha_npu.c | 27 +++++++++++++++++++++++++++
 drivers/net/ethernet/airoha/airoha_npu.h |  4 ++++
 2 files changed, 31 insertions(+)

diff --git a/drivers/net/ethernet/airoha/airoha_npu.c b/drivers/net/ethernet/airoha/airoha_npu.c
index a1568233edcb180c7d19245051f0c409664b5242..aa7edb60e5d1d19fbfc0675bae623cab346bf211 100644
--- a/drivers/net/ethernet/airoha/airoha_npu.c
+++ b/drivers/net/ethernet/airoha/airoha_npu.c
@@ -525,6 +525,29 @@ static u32 airoha_npu_wlan_queue_addr_get(struct airoha_npu *npu, int qid,
 	return REG_RX_BASE(qid);
 }
 
+static void airoha_npu_wlan_irq_status_set(struct airoha_npu *npu, u32 val)
+{
+	regmap_write(npu->regmap, REG_IRQ_STATUS, val);
+}
+
+static u32 airoha_npu_wlan_irq_status_get(struct airoha_npu *npu, int q)
+{
+	u32 val;
+
+	regmap_read(npu->regmap, REG_IRQ_STATUS, &val);
+	return val;
+}
+
+static void airoha_npu_wlan_irq_enable(struct airoha_npu *npu, int q)
+{
+	regmap_set_bits(npu->regmap, REG_IRQ_RXDONE(q), NPU_IRQ_RX_MASK(q));
+}
+
+static void airoha_npu_wlan_irq_disable(struct airoha_npu *npu, int q)
+{
+	regmap_clear_bits(npu->regmap, REG_IRQ_RXDONE(q), NPU_IRQ_RX_MASK(q));
+}
+
 struct airoha_npu *airoha_npu_get(struct device *dev, dma_addr_t *stats_addr)
 {
 	struct platform_device *pdev;
@@ -632,6 +655,10 @@ static int airoha_npu_probe(struct platform_device *pdev)
 	npu->ops.wlan_send_msg = airoha_npu_wlan_msg_send;
 	npu->ops.wlan_get_msg = airoha_npu_wlan_msg_get;
 	npu->ops.wlan_get_queue_addr = airoha_npu_wlan_queue_addr_get;
+	npu->ops.wlan_set_irq_status = airoha_npu_wlan_irq_status_set;
+	npu->ops.wlan_get_irq_status = airoha_npu_wlan_irq_status_get;
+	npu->ops.wlan_enable_irq = airoha_npu_wlan_irq_enable;
+	npu->ops.wlan_disable_irq = airoha_npu_wlan_irq_disable;
 
 	npu->regmap = devm_regmap_init_mmio(dev, base, &regmap_config);
 	if (IS_ERR(npu->regmap))
diff --git a/drivers/net/ethernet/airoha/airoha_npu.h b/drivers/net/ethernet/airoha/airoha_npu.h
index 6a9cb1425f48ad8b01daf191ace4e443d22949dc..9e225df8b6c94b40386cc015cc086e9de7489a53 100644
--- a/drivers/net/ethernet/airoha/airoha_npu.h
+++ b/drivers/net/ethernet/airoha/airoha_npu.h
@@ -88,6 +88,10 @@ struct airoha_npu {
 				    u32 *data);
 		u32 (*wlan_get_queue_addr)(struct airoha_npu *npu, int qid,
 					   bool xmit);
+		void (*wlan_set_irq_status)(struct airoha_npu *npu, u32 val);
+		u32 (*wlan_get_irq_status)(struct airoha_npu *npu, int q);
+		void (*wlan_enable_irq)(struct airoha_npu *npu, int q);
+		void (*wlan_disable_irq)(struct airoha_npu *npu, int q);
 	} ops;
 };
 

-- 
2.50.0