[PATCH v1 1/7] PCI: dt: Add legacy PCI IRQ defines

From: Andrew Murray <andrew.murray@arm.com>
To: Rob Herring <robh+dt@kernel.org>, Mark Rutland <mark.rutland@arm.com>
Cc: devicetree@vger.kernel.org
Subject: [PATCH v1 1/7] PCI: dt: Add legacy PCI IRQ defines
Date: Mon,  4 Nov 2019 16:38:15 +0000	[thread overview]
Message-ID: <20191104163834.8932-2-andrew.murray@arm.com> (raw)
In-Reply-To: <20191104163834.8932-1-andrew.murray@arm.com>

PCI devices can trigger interrupts via 4 physical/virtual lines known
as INTA, INTB, INTC or INTD. Due to interrupt swizzling it is often
required to describe the interrupt mapping in the device tree. Let's
add a define for each type to improve device tree clarity.

Signed-off-by: Andrew Murray <andrew.murray@arm.com>
---
 include/dt-bindings/interrupt-controller/irq.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/include/dt-bindings/interrupt-controller/irq.h b/include/dt-bindings/interrupt-controller/irq.h
index 9e3d183e1381..f9063fd661cd 100644
--- a/include/dt-bindings/interrupt-controller/irq.h
+++ b/include/dt-bindings/interrupt-controller/irq.h
@@ -17,4 +17,12 @@
 #define IRQ_TYPE_LEVEL_HIGH	4
 #define IRQ_TYPE_LEVEL_LOW	8
 
+/* Legacy PCI IRQ lines */
+#define IRQ_INTA		1
+#define IRQ_INTB		2
+#define IRQ_INTC		3
+#define IRQ_INTD		4
+
+#define IRQ_INT_ALL		7
+
 #endif
-- 
2.21.0

