linux-kernel - [PATCH 3/7] ia64: convert to clocksource_register

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Message-Id: <1287618253-13258-4-git-send-email-johnstul@us.ibm.com>
Date:	Wed, 20 Oct 2010 16:44:09 -0700
From:	John Stultz <johnstul@...ibm.com>
To:	LKML <linux-kernel@...r.kernel.org>
Cc:	John Stultz <johnstul@...ibm.com>, Tony Luck <tony.luck@...el.com>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: [PATCH 3/7] ia64: convert to clocksource_register_hz/khz

This converts the ia64 clocksources to use clocksource_register_hz/khz

This is untested, so any assistance in testing would be appreciated!

Signed-off-by: John Stultz <johnstul@...ibm.com>
CC: Tony Luck <tony.luck@...el.com>
CC: Thomas Gleixner <tglx@...utronix.de>
---
 arch/ia64/kernel/cyclone.c      |    6 +-----
 arch/ia64/kernel/time.c         |    9 ++-------
 arch/ia64/sn/kernel/sn2/timer.c |    6 +-----
 drivers/char/hpet.c             |    6 +-----
 4 files changed, 5 insertions(+), 22 deletions(-)

diff --git a/arch/ia64/kernel/cyclone.c b/arch/ia64/kernel/cyclone.c
index 71e3586..6f76be4 100644
--- a/arch/ia64/kernel/cyclone.c
+++ b/arch/ia64/kernel/cyclone.c
@@ -31,8 +31,6 @@ static struct clocksource clocksource_cyclone = {
         .rating         = 300,
         .read           = read_cyclone,
         .mask           = (1LL << 40) - 1,
-        .mult           = 0, /*to be caluclated*/
-        .shift          = 16,
         .flags          = CLOCK_SOURCE_IS_CONTINUOUS,
 };
 
@@ -118,9 +116,7 @@ int __init init_cyclone_clock(void)
 	/* initialize last tick */
 	cyclone_mc = cyclone_timer;
 	clocksource_cyclone.fsys_mmio = cyclone_timer;
-	clocksource_cyclone.mult = clocksource_hz2mult(CYCLONE_TIMER_FREQ,
-						clocksource_cyclone.shift);
-	clocksource_register(&clocksource_cyclone);
+	clocksource_register_hz(&clocksource_cyclone, CYCLONE_TIMER_FREQ);
 
 	return 0;
 }
diff --git a/arch/ia64/kernel/time.c b/arch/ia64/kernel/time.c
index ed6f22e..4b981e5 100644
--- a/arch/ia64/kernel/time.c
+++ b/arch/ia64/kernel/time.c
@@ -73,8 +73,6 @@ static struct clocksource clocksource_itc = {
 	.rating         = 350,
 	.read           = itc_get_cycles,
 	.mask           = CLOCKSOURCE_MASK(64),
-	.mult           = 0, /*to be calculated*/
-	.shift          = 16,
 	.flags          = CLOCK_SOURCE_IS_CONTINUOUS,
 #ifdef CONFIG_PARAVIRT
 	.resume		= paravirt_clocksource_resume,
@@ -374,11 +372,8 @@ ia64_init_itm (void)
 	ia64_cpu_local_tick();
 
 	if (!itc_clocksource) {
-		/* Sort out mult/shift values: */
-		clocksource_itc.mult =
-			clocksource_hz2mult(local_cpu_data->itc_freq,
-						clocksource_itc.shift);
-		clocksource_register(&clocksource_itc);
+		clocksource_register_hz(&clocksource_itc,
+						local_cpu_data->itc_freq );
 		itc_clocksource = &clocksource_itc;
 	}
 }
diff --git a/arch/ia64/sn/kernel/sn2/timer.c b/arch/ia64/sn/kernel/sn2/timer.c
index 21d6f09..c34efda 100644
--- a/arch/ia64/sn/kernel/sn2/timer.c
+++ b/arch/ia64/sn/kernel/sn2/timer.c
@@ -33,8 +33,6 @@ static struct clocksource clocksource_sn2 = {
         .rating         = 450,
         .read           = read_sn2,
         .mask           = (1LL << 55) - 1,
-        .mult           = 0,
-        .shift          = 10,
         .flags          = CLOCK_SOURCE_IS_CONTINUOUS,
 };
 
@@ -57,9 +55,7 @@ ia64_sn_udelay (unsigned long usecs)
 void __init sn_timer_init(void)
 {
 	clocksource_sn2.fsys_mmio = RTC_COUNTER_ADDR;
-	clocksource_sn2.mult = clocksource_hz2mult(sn_rtc_cycles_per_second,
-							clocksource_sn2.shift);
-	clocksource_register(&clocksource_sn2);
+	clocksource_register_hz(&clocksource_sn2, sn_rtc_cycles_per_second);
 
 	ia64_udelay = &ia64_sn_udelay;
 }
diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c
index a0a1829..a6b2d09 100644
--- a/drivers/char/hpet.c
+++ b/drivers/char/hpet.c
@@ -83,8 +83,6 @@ static struct clocksource clocksource_hpet = {
         .rating         = 250,
         .read           = read_hpet,
         .mask           = CLOCKSOURCE_MASK(64),
-	.mult		= 0, /* to be calculated */
-        .shift          = 10,
         .flags          = CLOCK_SOURCE_IS_CONTINUOUS,
 };
 static struct clocksource *hpet_clocksource;
@@ -891,9 +889,7 @@ int hpet_alloc(struct hpet_data *hdp)
 	if (!hpet_clocksource) {
 		hpet_mctr = (void __iomem *)&hpetp->hp_hpet->hpet_mc;
 		CLKSRC_FSYS_MMIO_SET(clocksource_hpet.fsys_mmio, hpet_mctr);
-		clocksource_hpet.mult = clocksource_hz2mult(hpetp->hp_tick_freq,
-						clocksource_hpet.shift);
-		clocksource_register(&clocksource_hpet);
+		clocksource_register_hz(&clocksource_hpet, hpetp->hp_tick_freq);
 		hpetp->hp_clocksource = &clocksource_hpet;
 		hpet_clocksource = &clocksource_hpet;
 	}
-- 
1.6.0.4

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