mach-u300: cleanup clockevent code

Use the new clockevents_config_and_register() function to register
the U300 clockevent, since that code requires ->cpumask to be set
we set this even on this UP system to please the framework.

Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/arch/arm/mach-u300/timer.c b/arch/arm/mach-u300/timer.c
index 18d7fa0603c230259ff96d3f9dc910b4a53a3b04..5f51bdeef0ef1dd0a8cdb824dc35ad5f924a7d24 100644 (file)
--- a/arch/arm/mach-u300/timer.c
+++ b/arch/arm/mach-u300/timer.c
@@ -27,9 +27,6 @@
 #include <asm/mach/time.h>
 #include <asm/mach/irq.h>
 
-/* Be able to sleep for atleast 4 seconds (usually more) */
-#define APPTIMER_MIN_RANGE 4
-
 /*
  * APP side special timer registers
  * This timer contains four timers which can fire an interrupt each.
@@ -309,11 +306,11 @@ static int u300_set_next_event(unsigned long cycles,
 
 /* Use general purpose timer 1 as clock event */
 static struct clock_event_device clockevent_u300_1mhz = {
-       .name           = "GPT1",
-       .rating         = 300, /* Reasonably fast and accurate clock event */
-       .features       = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
-       .set_next_event = u300_set_next_event,
-       .set_mode       = u300_set_mode,
+       .name           = "GPT1",
+       .rating         = 300, /* Reasonably fast and accurate clock event */
+       .features       = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
+       .set_next_event = u300_set_next_event,
+       .set_mode       = u300_set_mode,
 };
 
 /* Clock event timer interrupt handler */
@@ -328,9 +325,9 @@ static irqreturn_t u300_timer_interrupt(int irq, void *dev_id)
 }
 
 static struct irqaction u300_timer_irq = {
-       .name           = "U300 Timer Tick",
-       .flags          = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL,
-       .handler        = u300_timer_interrupt,
+       .name           = "U300 Timer Tick",
+       .flags          = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL,
+       .handler        = u300_timer_interrupt,
 };
 
 /*
@@ -413,16 +410,10 @@ static void __init u300_timer_init(void)
                        "GPT2", rate, 300, 32, clocksource_mmio_readl_up))
                pr_err("timer: failed to initialize U300 clock source\n");
 
-       clockevents_calc_mult_shift(&clockevent_u300_1mhz,
-                                   rate, APPTIMER_MIN_RANGE);
-       /* 32bit counter, so 32bits delta is max */
-       clockevent_u300_1mhz.max_delta_ns =
-               clockevent_delta2ns(0xffffffff, &clockevent_u300_1mhz);
-       /* This timer is slow enough to set for 1 cycle == 1 MHz */
-       clockevent_u300_1mhz.min_delta_ns =
-               clockevent_delta2ns(1, &clockevent_u300_1mhz);
-       clockevent_u300_1mhz.cpumask = cpumask_of(0);
-       clockevents_register_device(&clockevent_u300_1mhz);
+       /* Configure and register the clockevent */
+       clockevents_config_and_register(&clockevent_u300_1mhz, rate,
+                                       1, 0xffffffff);
+
        /*
         * TODO: init and register the rest of the timers too, they can be
         * used by hrtimers!