clocksource: 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: Andres Salomon <dilinger@queued.net>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Olof Johansson <olof@lixom.net>
diff --git a/drivers/clocksource/cs5535-clockevt.c b/drivers/clocksource/cs5535-clockevt.c
index d927938..ea21048 100644
--- a/drivers/clocksource/cs5535-clockevt.c
+++ b/drivers/clocksource/cs5535-clockevt.c
@@ -100,7 +100,6 @@
.set_mode = mfgpt_set_mode,
.set_next_event = mfgpt_next_event,
.rating = 250,
- .shift = 32
};
static irqreturn_t mfgpt_tick(int irq, void *dev_id)
@@ -169,17 +168,11 @@
cs5535_mfgpt_write(cs5535_event_clock, MFGPT_REG_SETUP, val);
/* Set up the clock event */
- cs5535_clockevent.mult = div_sc(MFGPT_HZ, NSEC_PER_SEC,
- cs5535_clockevent.shift);
- cs5535_clockevent.min_delta_ns = clockevent_delta2ns(0xF,
- &cs5535_clockevent);
- cs5535_clockevent.max_delta_ns = clockevent_delta2ns(0xFFFE,
- &cs5535_clockevent);
-
printk(KERN_INFO DRV_NAME
": Registering MFGPT timer as a clock event, using IRQ %d\n",
timer_irq);
- clockevents_register_device(&cs5535_clockevent);
+ clockevents_config_and_register(&cs5535_clockevent, MFGPT_HZ,
+ 0xF, 0xFFFE);
return 0;