m68k/apollo: Convert Apollo to genirq

Replace the custom user vector interrupt handler that calls do_IRQ() and
does an EOI by handle_fasteoi_irq().
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Peter De Schrijver <p2@debian.org>

arch/m68k/Kconfig

@@ -87,7 +87,6 @@ config MMU_SUN3
 config USE_GENERIC_HARDIRQS
 	bool "Use genirq"
 	depends on MMU
-	depends on !APOLLO
 	depends on !SUN3X
 	depends on !Q40
 	depends on !SUN3

arch/m68k/apollo/dn_ints.c

 #include <linux/interrupt.h>
-
+#ifdef CONFIG_GENERIC_HARDIRQS
+#include <linux/irq.h>
+#else
 #include <asm/irq.h>
+#endif
+
 #include <asm/traps.h>
 #include <asm/apollohw.h>
 
+#ifndef CONFIG_GENERIC_HARDIRQS
 void dn_process_int(unsigned int irq, struct pt_regs *fp)
 {
 	do_IRQ(irq, fp);
@@ -11,6 +16,7 @@ void dn_process_int(unsigned int irq, struct pt_regs *fp)
 	*(volatile unsigned char *)(pica)=0x20;
 	*(volatile unsigned char *)(picb)=0x20;
 }
+#endif
 
 unsigned int apollo_irq_startup(struct irq_data *data)
 {
@@ -33,16 +39,31 @@ void apollo_irq_shutdown(struct irq_data *data)
 		*(volatile unsigned char *)(picb+1) |= (1 << (irq - 8));
 }
 
+#ifdef CONFIG_GENERIC_HARDIRQS
+void apollo_irq_eoi(struct irq_data *data)
+{
+	*(volatile unsigned char *)(pica) = 0x20;
+	*(volatile unsigned char *)(picb) = 0x20;
+}
+#endif
+
 static struct irq_chip apollo_irq_chip = {
 	.name           = "apollo",
 	.irq_startup    = apollo_irq_startup,
 	.irq_shutdown   = apollo_irq_shutdown,
+#ifdef CONFIG_GENERIC_HARDIRQS
+	.irq_eoi	= apollo_irq_eoi,
+#endif
 };
 
 
 void __init dn_init_IRQ(void)
 {
+#ifdef CONFIG_GENERIC_HARDIRQS
+	m68k_setup_user_interrupt(VEC_USER + 96, 16, NULL);
+#else
 	m68k_setup_user_interrupt(VEC_USER + 96, 16, dn_process_int);
-	m68k_setup_irq_controller(&apollo_irq_chip, handle_simple_irq,
+#endif
+	m68k_setup_irq_controller(&apollo_irq_chip, handle_fasteoi_irq,
 				  IRQ_APOLLO, 16);
 }