[Xen-devel] [PATCH v2 14/41] arm : acpi add helper function for setting interrupt type

[Parth Dixit <parth.dixit@xxxxxxxxxx>]

set edge/level type information for an interrupt

Signed-off-by: Parth Dixit <parth.dixit@xxxxxxxxxx>
---
 xen/arch/arm/irq.c         | 17 +++++++++++++++++
 xen/include/asm-arm/acpi.h | 26 ++++++++++++++++++++++++++
 xen/include/asm-arm/irq.h  |  2 ++
 3 files changed, 45 insertions(+)

diff --git a/xen/arch/arm/irq.c b/xen/arch/arm/irq.c
index 376c9f2..1713935 100644
--- a/xen/arch/arm/irq.c
+++ b/xen/arch/arm/irq.c
@@ -679,6 +679,23 @@ int platform_get_irq(const struct dt_device_node *device, 
int index)
     return irq;
 }
 
+int set_irq_type(int irq,int type)
+{
+    int res;
+
+    /* Setup the IRQ type */
+    if ( irq < NR_LOCAL_IRQS )
+        res = irq_local_set_type(irq, type);
+    else
+        res = irq_set_spi_type(irq, type);
+
+    if ( res )
+        return -1;
+
+    return 0;
+
+}
+
 /*
  * Local variables:
  * mode: C
diff --git a/xen/include/asm-arm/acpi.h b/xen/include/asm-arm/acpi.h
index 0845f14..1767143 100644
--- a/xen/include/asm-arm/acpi.h
+++ b/xen/include/asm-arm/acpi.h
@@ -50,4 +50,30 @@ static inline void disable_acpi(void)
 
 #define ACPI_GTDT_INTR_MASK ( ACPI_GTDT_INTERRUPT_MODE | 
ACPI_GTDT_INTERRUPT_POLARITY )
 
+/**
+ * IRQ line type.
+ *
+ * ACPI_IRQ_TYPE_NONE            - default, unspecified type
+ * ACPI_IRQ_TYPE_EDGE_RISING     - rising edge triggered
+ * ACPI_IRQ_TYPE_EDGE_FALLING    - falling edge triggered
+ * ACPI_IRQ_TYPE_EDGE_BOTH       - rising and falling edge triggered
+ * ACPI_IRQ_TYPE_LEVEL_HIGH      - high level triggered
+ * ACPI_IRQ_TYPE_LEVEL_LOW       - low level triggered
+ * ACPI_IRQ_TYPE_LEVEL_MASK      - Mask to filter out the level bits
+ * ACPI_IRQ_TYPE_SENSE_MASK      - Mask for all the above bits
+ * ACPI_IRQ_TYPE_INVALID         - Use to initialize the type
+ */
+#define ACPI_IRQ_TYPE_NONE           0x00000000
+#define ACPI_IRQ_TYPE_EDGE_RISING    0x00000001
+#define ACPI_IRQ_TYPE_EDGE_FALLING   0x00000002
+#define ACPI_IRQ_TYPE_EDGE_BOTH                           \
+    (ACPI_IRQ_TYPE_EDGE_FALLING | ACPI_IRQ_TYPE_EDGE_RISING)
+#define ACPI_IRQ_TYPE_LEVEL_HIGH     0x00000004
+#define ACPI_IRQ_TYPE_LEVEL_LOW      0x00000008
+#define ACPI_IRQ_TYPE_LEVEL_MASK                          \
+    (ACPI_IRQ_TYPE_LEVEL_LOW | ACPI_IRQ_TYPE_LEVEL_HIGH)
+#define ACPI_IRQ_TYPE_SENSE_MASK     0x0000000f
+
+#define ACPI_IRQ_TYPE_INVALID        0x00000010
+
 #endif /*_ASM_ARM_ACPI_H*/
diff --git a/xen/include/asm-arm/irq.h b/xen/include/asm-arm/irq.h
index 34b492b..ddad0a9 100644
--- a/xen/include/asm-arm/irq.h
+++ b/xen/include/asm-arm/irq.h
@@ -51,6 +51,8 @@ void arch_move_irqs(struct vcpu *v);
 /* Set IRQ type for an SPI */
 int irq_set_spi_type(unsigned int spi, unsigned int type);
 
+int set_irq_type(int irq,int type);
+
 int platform_get_irq(const struct dt_device_node *device, int index);
 
 void irq_set_affinity(struct irq_desc *desc, const cpumask_t *cpu_mask);
-- 
1.9.1


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