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authorDaniel Glöckner <dg@emlix.com>2009-05-05 15:03:21 +0000
committerChris Zankel <chris@zankel.net>2009-06-22 02:36:59 -0700
commit1beee21030ed3dc39a41c7b524dbc1a318b518bd (patch)
tree70d487aa10f673ac1f65ca510c50035675dffae2 /arch/xtensa
parentbd974240c9a7c6c560504bf390cd8985a16b68f6 (diff)
downloadlinux-2.6.38-lt-ux500-1beee21030ed3dc39a41c7b524dbc1a318b518bd.tar.gz
xtensa: allow variant to initialize own irq chips
There was already a PLATFORM_NR_IRQS define, which is now accompanied by a VARIANT_NR_IRQS. To be able to initialize these interrupts, init_IRQ now calls a variant specific hook. Changes compared to v1: - adapted to new CONFIG_VARIANT_IRQ_EXT - removed definition and call of platform_init_IRQ as there already is a platform_init_irq defined in asm/platform.h with a weak default in kernel/platform.c - renamed variant_init_IRQ to variant_init_irq Note that I could not find the call site of platform_init_irq although it is stated in platform.h that it is called from init_IRQ. Signed-off-by: Daniel Glöckner <dg@emlix.com> Signed-off-by: Chris Zankel <chris@zankel.net>
Diffstat (limited to 'arch/xtensa')
-rw-r--r--arch/xtensa/include/asm/irq.h12
-rw-r--r--arch/xtensa/kernel/irq.c2
2 files changed, 13 insertions, 1 deletions
diff --git a/arch/xtensa/include/asm/irq.h b/arch/xtensa/include/asm/irq.h
index dfac82dc52a..4c0ccc9c4f4 100644
--- a/arch/xtensa/include/asm/irq.h
+++ b/arch/xtensa/include/asm/irq.h
@@ -11,6 +11,7 @@
#ifndef _XTENSA_IRQ_H
#define _XTENSA_IRQ_H
+#include <linux/init.h>
#include <platform/hardware.h>
#include <variant/core.h>
@@ -21,11 +22,20 @@ static inline void variant_irq_enable(unsigned int irq) { }
static inline void variant_irq_disable(unsigned int irq) { }
#endif
+#ifndef VARIANT_NR_IRQS
+# define VARIANT_NR_IRQS 0
+#endif
#ifndef PLATFORM_NR_IRQS
# define PLATFORM_NR_IRQS 0
#endif
#define XTENSA_NR_IRQS XCHAL_NUM_INTERRUPTS
-#define NR_IRQS (XTENSA_NR_IRQS + PLATFORM_NR_IRQS)
+#define NR_IRQS (XTENSA_NR_IRQS + VARIANT_NR_IRQS + PLATFORM_NR_IRQS)
+
+#if VARIANT_NR_IRQS == 0
+static inline void variant_init_irq(void) { }
+#else
+void variant_init_irq(void) __init;
+#endif
static __inline__ int irq_canonicalize(int irq)
{
diff --git a/arch/xtensa/kernel/irq.c b/arch/xtensa/kernel/irq.c
index a36c85edd04..a1badb32fcd 100644
--- a/arch/xtensa/kernel/irq.c
+++ b/arch/xtensa/kernel/irq.c
@@ -197,4 +197,6 @@ void __init init_IRQ(void)
}
cached_irq_mask = 0;
+
+ variant_init_irq();
}