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ARM: AT91: update clock source registration

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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.

Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2010-12-13 13:14:55 +00:00
parent 40cc524400
commit 132b16325f
2 changed files with 2 additions and 6 deletions
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4
arch/arm/mach-at91/at91rm9200_time.c
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@ -101,7 +101,6 @@ static struct clocksource clk32k = {
.rating = 150,
.read = read_clk32k,
.mask = CLOCKSOURCE_MASK(20),
.shift = 10,
.flags = CLOCK_SOURCE_IS_CONTINUOUS,
};
@ -201,8 +200,7 @@ void __init at91rm9200_timer_init(void)
clockevents_register_device(&clkevt);
/* register clocksource */
clk32k.mult = clocksource_hz2mult(AT91_SLOW_CLOCK, clk32k.shift);
clocksource_register(&clk32k);
clocksource_register_hz(&clk32k, AT91_SLOW_CLOCK);
}
struct sys_timer at91rm9200_timer = {

4
arch/arm/mach-at91/at91sam926x_time.c
View File

@ -51,7 +51,6 @@ static struct clocksource pit_clk = {
.name = "pit",
.rating = 175,
.read = read_pit_clk,
.shift = 20,
.flags = CLOCK_SOURCE_IS_CONTINUOUS,
};
@ -163,10 +162,9 @@ static void __init at91sam926x_pit_init(void)
* Register clocksource. The high order bits of PIV are unused,
* so this isn't a 32-bit counter unless we get clockevent irqs.
*/
pit_clk.mult = clocksource_hz2mult(pit_rate, pit_clk.shift);
bits = 12 /* PICNT */ + ilog2(pit_cycle) /* PIV */;
pit_clk.mask = CLOCKSOURCE_MASK(bits);
clocksource_register(&pit_clk);
clocksource_register_hz(&pit_clk, pit_rate);
/* Set up irq handler */
setup_irq(AT91_ID_SYS, &at91sam926x_pit_irq);