MN10300: ASB2364: Handle the IRQ multiplexer in the FPGA

Handle the IRQ multiplexer in the FPGA by implementing a cascade interrupt
driver for it.

Signed-off-by: David Howells <dhowells@redhat.com>

1 files changed, 8 insertions, 4 deletions

diff --git a/arch/mn10300/include/asm/irq.h b/arch/mn10300/include/asm/irq.h
index b7b8e175b167..1a73fb3f60c6 100644
--- a/arch/mn10300/include/asm/irq.h
+++ b/arch/mn10300/include/asm/irq.h
@@ -21,11 +21,15 @@
 /* this number is used when no interrupt has been assigned */
 #define NO_IRQ          INT_MAX
 
-/* hardware irq numbers */
-#ifdef CONFIG_SMP
-#define NR_IRQS         GxICR_NUM_EXT_IRQS
+/*
+ * hardware irq numbers
+ * - the ASB2364 has an FPGA with an IRQ multiplexer on it
+ */
+#ifdef CONFIG_MN10300_UNIT_ASB2364
+#include <unit/irq.h>
 #else
-#define NR_IRQS         GxICR_NUM_IRQS
+#define NR_CPU_IRQS     GxICR_NUM_IRQS
+#define NR_IRQS         NR_CPU_IRQS
 #endif
 
 /* external hardware irq numbers */