From 838a2ae80a6ab52139fb1bf0a93ea8c5eff94488 Mon Sep 17 00:00:00 2001
From: Shawn Guo <shawn.guo@linaro.org>
Date: Sat, 12 Jan 2013 11:50:05 +0000
Subject: 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>
---
 arch/arm/mach-cns3xxx/core.c | 13 +++----------
 1 file changed, 3 insertions(+), 10 deletions(-)

(limited to 'arch/arm/mach-cns3xxx/core.c')

diff --git a/arch/arm/mach-cns3xxx/core.c b/arch/arm/mach-cns3xxx/core.c
index 031805b1428d..3eb74d1ba067 100644
--- a/arch/arm/mach-cns3xxx/core.c
+++ b/arch/arm/mach-cns3xxx/core.c
@@ -134,7 +134,6 @@ static int cns3xxx_timer_set_next_event(unsigned long evt,
 
 static struct clock_event_device cns3xxx_tmr1_clockevent = {
 	.name		= "cns3xxx timer1",
-	.shift		= 8,
 	.features       = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
 	.set_mode	= cns3xxx_timer_set_mode,
 	.set_next_event	= cns3xxx_timer_set_next_event,
@@ -145,15 +144,9 @@ static struct clock_event_device cns3xxx_tmr1_clockevent = {
 static void __init cns3xxx_clockevents_init(unsigned int timer_irq)
 {
 	cns3xxx_tmr1_clockevent.irq = timer_irq;
-	cns3xxx_tmr1_clockevent.mult =
-		div_sc((cns3xxx_cpu_clock() >> 3) * 1000000, NSEC_PER_SEC,
-		       cns3xxx_tmr1_clockevent.shift);
-	cns3xxx_tmr1_clockevent.max_delta_ns =
-		clockevent_delta2ns(0xffffffff, &cns3xxx_tmr1_clockevent);
-	cns3xxx_tmr1_clockevent.min_delta_ns =
-		clockevent_delta2ns(0xf, &cns3xxx_tmr1_clockevent);
-
-	clockevents_register_device(&cns3xxx_tmr1_clockevent);
+	clockevents_config_and_register(&cns3xxx_tmr1_clockevent,
+					(cns3xxx_cpu_clock() >> 3) * 1000000,
+					0xf, 0xffffffff);
 }
 
 /*
-- 
cgit