ARM: omap: update clock source registration

In d7e81c2 (clocksource: Add clocksource_register_hz/khz interface) new
interfaces were added which simplify (and optimize) the selection of the
divisor shift/mult constants.  Switch over to using this new interface.

Tested-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mach-omap1/time.c

@@ -208,7 +208,6 @@ static struct clocksource clocksource_mpu = {
 	.rating		= 300,
 	.read		= mpu_read,
 	.mask		= CLOCKSOURCE_MASK(32),
-	.shift		= 24,
 	.flags		= CLOCK_SOURCE_IS_CONTINUOUS,
 };
 
@@ -217,13 +216,10 @@ static void __init omap_init_clocksource(unsigned long rate)
 	static char err[] __initdata = KERN_ERR
 			"%s: can't register clocksource!\n";
 
-	clocksource_mpu.mult
-		= clocksource_khz2mult(rate/1000, clocksource_mpu.shift);
-
 	setup_irq(INT_TIMER2, &omap_mpu_timer2_irq);
 	omap_mpu_timer_start(1, ~0, 1);
 
-	if (clocksource_register(&clocksource_mpu))
+	if (clocksource_register_hz(&clocksource_mpu, rate))
 		printk(err, clocksource_mpu.name);
 }
 

arch/arm/mach-omap2/timer-gp.c

@@ -195,7 +195,6 @@ static struct clocksource clocksource_gpt = {
 	.rating		= 300,
 	.read		= clocksource_read_cycles,
 	.mask		= CLOCKSOURCE_MASK(32),
-	.shift		= 24,
 	.flags		= CLOCK_SOURCE_IS_CONTINUOUS,
 };
 
@@ -220,9 +219,7 @@ static void __init omap2_gp_clocksource_init(void)
 
 	omap_dm_timer_set_load_start(gpt, 1, 0);
 
-	clocksource_gpt.mult =
-		clocksource_khz2mult(tick_rate/1000, clocksource_gpt.shift);
-	if (clocksource_register(&clocksource_gpt))
+	if (clocksource_register_hz(&clocksource_gpt, tick_rate))
 		printk(err2, clocksource_gpt.name);
 }
 #endif

arch/arm/plat-omap/counter_32k.c

@@ -102,7 +102,6 @@ static struct clocksource clocksource_32k = {
 	.rating		= 250,
 	.read		= omap_32k_read_dummy,
 	.mask		= CLOCKSOURCE_MASK(32),
-	.shift		= 10,
 	.flags		= CLOCK_SOURCE_IS_CONTINUOUS,
 };
 
@@ -167,12 +166,9 @@ static int __init omap_init_clocksource_32k(void)
 		if (sync_32k_ick)
 			clk_enable(sync_32k_ick);
 
-		clocksource_32k.mult = clocksource_hz2mult(32768,
-					    clocksource_32k.shift);
-
 		offset_32k = clocksource_32k.read(&clocksource_32k);
 
-		if (clocksource_register(&clocksource_32k))
+		if (clocksource_register_hz(&clocksource_32k, 32768))
 			printk(err, clocksource_32k.name);
 	}
 	return 0;