[PATCH 1/4] ARM: sa1100: add irq handler to prepare MULTI_IRQ_HANDLER
Dmitry Eremin-Solenikov
dmitry_eremin at mentor.com
Fri Nov 1 06:52:08 EDT 2013
Add sa1100_handle_irq implementating handle_irq for sa1100 platform.
Signed-off-by: Dmitry Eremin-Solenikov <dmitry_eremin at mentor.com>
---
arch/arm/mach-sa1100/generic.h | 1 +
arch/arm/mach-sa1100/irq.c | 17 +++++++++++++++++
2 files changed, 18 insertions(+)
diff --git a/arch/arm/mach-sa1100/generic.h b/arch/arm/mach-sa1100/generic.h
index 0d92e11..a918ea5 100644
--- a/arch/arm/mach-sa1100/generic.h
+++ b/arch/arm/mach-sa1100/generic.h
@@ -12,6 +12,7 @@ extern void __init sa1100_init_irq(void);
extern void __init sa1100_init_gpio(void);
extern void sa11x0_restart(enum reboot_mode, const char *);
extern void sa11x0_init_late(void);
+extern void sa1100_handle_irq(struct pt_regs *);
#define SET_BANK(__nr,__start,__size) \
mi->bank[__nr].start = (__start), \
diff --git a/arch/arm/mach-sa1100/irq.c b/arch/arm/mach-sa1100/irq.c
index 2124f1fc..2ec1f92 100644
--- a/arch/arm/mach-sa1100/irq.c
+++ b/arch/arm/mach-sa1100/irq.c
@@ -20,6 +20,7 @@
#include <mach/hardware.h>
#include <mach/irqs.h>
#include <asm/mach/irq.h>
+#include <asm/exception.h>
#include "generic.h"
@@ -340,3 +341,19 @@ void __init sa1100_init_irq(void)
sa1100_init_gpio();
}
+
+asmlinkage void __exception_irq_entry sa1100_handle_irq(struct pt_regs *regs)
+{
+ uint32_t icip, icmr, mask;
+
+ do {
+ icip = (ICIP);
+ icmr = (ICMR);
+ mask = icip & icmr;
+
+ if (mask == 0)
+ break;
+
+ handle_IRQ(fls(mask) - 1, regs);
+ } while (1);
+}
--
1.8.4.rc3
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