[PATCH] m68k: introduce irq controller

Introduce irq controller and use it to manage auto vector interrupts.
Introduce setup_irq() which can be used for irq setup.

Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

2 files changed, 20 insertions, 7 deletions

diff --git a/include/asm-m68k/atari_stdma.h b/include/asm-m68k/atari_stdma.h
index 64f92880ce43..b4eadf852738 100644
--- a/include/asm-m68k/atari_stdma.h
+++ b/include/asm-m68k/atari_stdma.h
@@ -3,7 +3,7 @@
 #define _atari_stdma_h
 
 
-#include <asm/irq.h>
+#include <linux/interrupt.h>
 
 
 /***************************** Prototypes *****************************/
diff --git a/include/asm-m68k/irq.h b/include/asm-m68k/irq.h
index 320a084bbd11..7fa8733bb4cc 100644
--- a/include/asm-m68k/irq.h
+++ b/include/asm-m68k/irq.h
@@ -1,7 +1,8 @@
 #ifndef _M68K_IRQ_H_
 #define _M68K_IRQ_H_
 
-#include <linux/interrupt.h>
+#include <linux/hardirq.h>
+#include <linux/spinlock_types.h>
 
 /*
  * # of m68k auto vector interrupts
@@ -81,7 +82,7 @@ extern void (*disable_irq)(unsigned int);
 struct pt_regs;
 
 extern int cpu_request_irq(unsigned int,
-                           irqreturn_t (*)(int, void *, struct pt_regs *),
+                           int (*)(int, void *, struct pt_regs *),
                            unsigned long, const char *, void *);
 extern void cpu_free_irq(unsigned int, void *);
 
@@ -103,23 +104,35 @@ extern void cpu_free_irq(unsigned int, void *);
  * interrupt source (if it supports chaining).
  */
 typedef struct irq_node {
-        irqreturn_t     (*handler)(int, void *, struct pt_regs *);
-        unsigned long   flags;
+        int             (*handler)(int, void *, struct pt_regs *);
         void            *dev_id;
-        const char      *devname;
         struct irq_node *next;
+        unsigned long   flags;
+        const char      *devname;
 } irq_node_t;
 
 /*
  * This structure has only 4 elements for speed reasons
  */
 typedef struct irq_handler {
-        irqreturn_t     (*handler)(int, void *, struct pt_regs *);
+        int             (*handler)(int, void *, struct pt_regs *);
         unsigned long   flags;
         void            *dev_id;
         const char      *devname;
 } irq_handler_t;
 
+struct irq_controller {
+        const char *name;
+        spinlock_t lock;
+        int (*startup)(unsigned int irq);
+        void (*shutdown)(unsigned int irq);
+        void (*enable)(unsigned int irq);
+        void (*disable)(unsigned int irq);
+};
+
+extern int m68k_irq_startup(unsigned int);
+extern void m68k_irq_shutdown(unsigned int);
+
 /* count of spurious interrupts */
 extern volatile unsigned int num_spurious;