Merge branch 'linus' into x86/x2apic

[linux-2.6-omap-h63xx.git] / arch / blackfin / kernel / time.c

diff --git a/arch/blackfin/kernel/time.c b/arch/blackfin/kernel/time.c
index 5bd64e341df39cb53c9f70b29229274a72a416c9..eb23523204547194c1de575478554510a7665356 100644 (file)
--- a/arch/blackfin/kernel/time.c
+++ b/arch/blackfin/kernel/time.c
@@ -6,9 +6,10 @@
  * Created:
  * Description:  This file contains the bfin-specific time handling details.
  *               Most of the stuff is located in the machine specific files.
+ *              FIXME: (This file is subject for removal)
  *
  * Modified:
- *               Copyright 2004-2006 Analog Devices Inc.
+ *               Copyright 2004-2008 Analog Devices Inc.
  *
  * Bugs:         Enter bugs at http://blackfin.uclinux.org/
  *
@@ -35,12 +36,12 @@
 #include <linux/irq.h>
 
 #include <asm/blackfin.h>
+#include <asm/time.h>
 
 /* This is an NTP setting */
 #define        TICK_SIZE (tick_nsec / 1000)
 
-static void time_sched_init(irqreturn_t(*timer_routine)
-                       (int, void *));
+static void time_sched_init(irq_handler_t timer_routine);
 static unsigned long gettimeoffset(void);
 
 static struct irqaction bfin_timer_irq = {
@@ -48,23 +49,8 @@ static struct irqaction bfin_timer_irq = {
        .flags = IRQF_DISABLED
 };
 
-/*
- * The way that the Blackfin core timer works is:
- *  - CCLK is divided by a programmable 8-bit pre-scaler (TSCALE)
- *  - Every time TSCALE ticks, a 32bit is counted down (TCOUNT)
- *
- * If you take the fastest clock (1ns, or 1GHz to make the math work easier)
- *    10ms is 10,000,000 clock ticks, which fits easy into a 32-bit counter
- *    (32 bit counter is 4,294,967,296ns or 4.2 seconds) so, we don't need
- *    to use TSCALE, and program it to zero (which is pass CCLK through).
- *    If you feel like using it, try to keep HZ * TIMESCALE to some
- *    value that divides easy (like power of 2).
- */
-
-#define TIME_SCALE 1
-
 static void
-time_sched_init(irqreturn_t(*timer_routine) (int, void *))
+time_sched_init(irq_handler_t timer_routine)
 {
        u32 tcount;
 
@@ -137,9 +123,6 @@ irqreturn_t timer_interrupt(int irq, void *dummy)
 
        do_timer(1);
 
-#ifndef CONFIG_SMP
-       update_process_times(user_mode(get_irq_regs()));
-#endif
        profile_tick(CPU_PROFILING);
 
        /*
@@ -161,6 +144,11 @@ irqreturn_t timer_interrupt(int irq, void *dummy)
                        last_rtc_update = xtime.tv_sec - 600;
        }
        write_sequnlock(&xtime_lock);
+
+#ifndef CONFIG_SMP
+       update_process_times(user_mode(get_irq_regs()));
+#endif
+
        return IRQ_HANDLED;
 }