ARM: use clockevents_config_and_register() where possible

The clockevent core is able to figure out the best mult and shift,
calculate min_delta_ns and max_delta_ns, with the necessary info passed
into clockevents_config_and_register().  Use this combined configure
and register function where possible to make the codes less error prone
and gain some positive diff stat.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Reviewed-by: Anton Vorontsov <cbouatmailru@gmail.com>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
Tested-by: Roland Stigge <stigge@antcom.de>
Acked-by: Eric Miao <eric.y.miao@gmail.com>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
Cc: David Brown <davidb@codeaurora.org>
Tested-by: Tony Lindgren <tony@atomide.com>
Acked-by: Barry Song <baohua.song@csr.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Tony Prisk <linux@prisktech.co.nz>
Cc: Lennert Buytenhek <buytenh@wantstofly.org>
Cc: Wan ZongShun <mcuos.com@gmail.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Jason Cooper <jason@lakedaemon.net>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Olof Johansson <olof@lixom.net>

1 files changed, 2 insertions, 5 deletions

diff --git a/arch/arm/mach-mmp/time.c b/arch/arm/mach-mmp/time.c
index 936447c70977..86a18b3d252e 100644
--- a/arch/arm/mach-mmp/time.c
+++ b/arch/arm/mach-mmp/time.c
@@ -141,7 +141,6 @@ static void timer_set_mode(enum clock_event_mode mode,
 static struct clock_event_device ckevt = {
         .name           = "clockevent",
         .features       = CLOCK_EVT_FEAT_ONESHOT,
-        .shift          = 32,
         .rating         = 200,
         .set_next_event = timer_set_next_event,
         .set_mode       = timer_set_mode,
@@ -198,15 +197,13 @@ void __init timer_init(int irq)
 
         setup_sched_clock(mmp_read_sched_clock, 32, CLOCK_TICK_RATE);
 
-        ckevt.mult = div_sc(CLOCK_TICK_RATE, NSEC_PER_SEC, ckevt.shift);
-        ckevt.max_delta_ns = clockevent_delta2ns(MAX_DELTA, &ckevt);
-        ckevt.min_delta_ns = clockevent_delta2ns(MIN_DELTA, &ckevt);
         ckevt.cpumask = cpumask_of(0);
 
         setup_irq(irq, &timer_irq);
 
         clocksource_register_hz(&cksrc, CLOCK_TICK_RATE);
-        clockevents_register_device(&ckevt);
+        clockevents_config_and_register(&ckevt, CLOCK_TICK_RATE,
+                                        MIN_DELTA, MAX_DELTA);
 }
 
 #ifdef CONFIG_OF