[MIPS] time: Replace plat_timer_setup with modern APIs.

plat_timer_setup is no longer getting called.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/kernel/cevt-r4k.c

@@ -224,7 +224,7 @@ void __cpuinit mips_clockevent_init(void)
 	uint64_t mips_freq = mips_hpt_frequency;
 	unsigned int cpu = smp_processor_id();
 	struct clock_event_device *cd;
-	unsigned int irq = MIPS_CPU_IRQ_BASE + 7;
+	unsigned int irq;
 
 	if (!cpu_has_counter || !mips_hpt_frequency)
 		return;
@@ -243,6 +243,15 @@ void __cpuinit mips_clockevent_init(void)
 	if (!c0_compare_int_usable())
 		return;
 
+	/*
+	 * With vectored interrupts things are getting platform specific.
+	 * get_c0_compare_int is a hook to allow a platform to return the
+	 * interrupt number of it's liking.
+	 */
+	irq = MIPS_CPU_IRQ_BASE + cp0_compare_irq;
+	if (get_c0_compare_int)
+		irq = get_c0_compare_int();
+
 	cd = &per_cpu(mips_clockevent_device, cpu);
 
 	cd->name		= "MIPS";
@@ -267,13 +276,15 @@ void __cpuinit mips_clockevent_init(void)
 
 	clockevents_register_device(cd);
 
-	if (!cp0_timer_irq_installed) {
+	if (!cp0_timer_irq_installed)
+		return;
+
+	cp0_timer_irq_installed = 1;
+
 #ifdef CONFIG_MIPS_MT_SMTC
 #define CPUCTR_IMASKBIT (0x100 << cp0_compare_irq)
 	setup_irq_smtc(irq, &c0_compare_irqaction, CPUCTR_IMASKBIT);
 #else
 	setup_irq(irq, &c0_compare_irqaction);
-#endif /* CONFIG_MIPS_MT_SMTC */
-		cp0_timer_irq_installed = 1;
-	}
+#endif
 }

arch/mips/mips-boards/generic/time.c

@@ -127,26 +127,6 @@ unsigned long read_persistent_clock(void)
 	return mc146818_get_cmos_time();
 }
 
-void __init plat_time_init(void)
-{
-	unsigned int est_freq;
-
-        /* Set Data mode - binary. */
-        CMOS_WRITE(CMOS_READ(RTC_CONTROL) | RTC_DM_BINARY, RTC_CONTROL);
-
-	est_freq = estimate_cpu_frequency();
-
-	printk("CPU frequency %d.%02d MHz\n", est_freq/1000000,
-	       (est_freq%1000000)*100/1000000);
-
-        cpu_khz = est_freq / 1000;
-
-	mips_scroll_message();
-#ifdef CONFIG_I8253		/* Only Malta has a PIT */
-	setup_pit_timer();
-#endif
-}
-
 void __init plat_perf_setup(void)
 {
 	cp0_perfcount_irq = -1;
@@ -166,14 +146,13 @@ void __init plat_perf_setup(void)
 	}
 }
 
-void __init plat_timer_setup(struct irqaction *irq)
+unsigned int __init get_c0_compare_int(void)
 {
 #ifdef MSC01E_INT_BASE
 	if (cpu_has_veic) {
 		set_vi_handler(MSC01E_INT_CPUCTR, mips_timer_dispatch);
 		mips_cpu_timer_irq = MSC01E_INT_BASE + MSC01E_INT_CPUCTR;
-	}
-	else
+	} else
 #endif
 	{
 		if (cpu_has_vint)
@@ -181,13 +160,26 @@ void __init plat_timer_setup(struct irqaction *irq)
 		mips_cpu_timer_irq = MIPS_CPU_IRQ_BASE + cp0_compare_irq;
 	}
 
-#ifdef CONFIG_MIPS_MT_SMTC
-	setup_irq_smtc(mips_cpu_timer_irq, irq, 0x100 << cp0_compare_irq);
-#else
-	setup_irq(mips_cpu_timer_irq, irq);
-#endif /* CONFIG_MIPS_MT_SMTC */
-#ifdef CONFIG_SMP
-	set_irq_handler(mips_cpu_timer_irq, handle_percpu_irq);
+	return mips_cpu_timer_irq;
+}
+
+void __init plat_time_init(void)
+{
+	unsigned int est_freq;
+
+        /* Set Data mode - binary. */
+        CMOS_WRITE(CMOS_READ(RTC_CONTROL) | RTC_DM_BINARY, RTC_CONTROL);
+
+	est_freq = estimate_cpu_frequency();
+
+	printk("CPU frequency %d.%02d MHz\n", est_freq/1000000,
+	       (est_freq%1000000)*100/1000000);
+
+        cpu_khz = est_freq / 1000;
+
+	mips_scroll_message();
+#ifdef CONFIG_I8253		/* Only Malta has a PIT */
+	setup_pit_timer();
 #endif
 
 	plat_perf_setup();

arch/mips/mipssim/sim_time.c

@@ -75,25 +75,6 @@ static unsigned int __init estimate_cpu_frequency(void)
 	return count;
 }
 
-void __init plat_time_init(void)
-{
-	unsigned int est_freq, flags;
-
-	local_irq_save(flags);
-
-	/* Set Data mode - binary. */
-	CMOS_WRITE(CMOS_READ(RTC_CONTROL) | RTC_DM_BINARY, RTC_CONTROL);
-
-	est_freq = estimate_cpu_frequency();
-
-	printk(KERN_INFO "CPU frequency %d.%02d MHz\n", est_freq / 1000000,
-	       (est_freq % 1000000) * 100 / 1000000);
-
-	cpu_khz = est_freq / 1000;
-
-	local_irq_restore(flags);
-}
-
 static int mips_cpu_timer_irq;
 
 static void mips_timer_dispatch(void)
@@ -102,26 +83,37 @@ static void mips_timer_dispatch(void)
 }
 
 
-void __init plat_timer_setup(struct irqaction *irq)
+unsigned __init get_c0_compare_int(void)
 {
+#ifdef MSC01E_INT_BASE
 	if (cpu_has_veic) {
 		set_vi_handler(MSC01E_INT_CPUCTR, mips_timer_dispatch);
 		mips_cpu_timer_irq = MSC01E_INT_BASE + MSC01E_INT_CPUCTR;
 	} else {
+#endif
 		if (cpu_has_vint)
 			set_vi_handler(cp0_compare_irq, mips_timer_dispatch);
 		mips_cpu_timer_irq = MIPS_CPU_IRQ_BASE + cp0_compare_irq;
 	}
 
-	/* we are using the cpu counter for timer interrupts */
-	setup_irq(mips_cpu_timer_irq, irq);
+	return mips_cpu_timer_irq;
+}
 
-#ifdef CONFIG_SMP
-	/* irq_desc(riptor) is a global resource, when the interrupt overlaps
-	   on seperate cpu's the first one tries to handle the second interrupt.
-	   The effect is that the int remains disabled on the second cpu.
-	   Mark the interrupt with IRQ_PER_CPU to avoid any confusion */
-	irq_desc[mips_cpu_timer_irq].flags |= IRQ_PER_CPU;
-	set_irq_handler(mips_cpu_timer_irq, handle_percpu_irq);
-#endif
+void __init plat_time_init(void)
+{
+	unsigned int est_freq, flags;
+
+	local_irq_save(flags);
+
+	/* Set Data mode - binary. */
+	CMOS_WRITE(CMOS_READ(RTC_CONTROL) | RTC_DM_BINARY, RTC_CONTROL);
+
+	est_freq = estimate_cpu_frequency();
+
+	printk(KERN_INFO "CPU frequency %d.%02d MHz\n", est_freq / 1000000,
+	       (est_freq % 1000000) * 100 / 1000000);
+
+	cpu_khz = est_freq / 1000;
+
+	local_irq_restore(flags);
 }

include/asm-mips/time.h

@@ -77,6 +77,7 @@ extern int (*perf_irq)(void);
  */
 #ifdef CONFIG_CEVT_R4K
 extern void mips_clockevent_init(void);
+extern unsigned int __weak get_c0_compare_int(void);
 #else
 static inline void mips_clockevent_init(void)
 {