c6x/timer64: Set ->min_delta_ticks and ->max_delta_ticks

In preparation for making the clockevents core NTP correction aware,
all clockevent device drivers must set ->min_delta_ticks and
->max_delta_ticks rather than ->min_delta_ns and ->max_delta_ns: a
clockevent device's rate is going to change dynamically and thus, the
ratio of ns to ticks ceases to stay invariant.

Make the c6x arch's clockevent driver initialize these fields properly.

This patch alone doesn't introduce any change in functionality as the
clockevents core still looks exclusively at the (untouched) ->min_delta_ns
and ->max_delta_ns. As soon as this has changed, a followup patch will
purge the initialization of ->min_delta_ns and ->max_delta_ns from this
driver.

Cc: Ingo Molnar <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Daniel Lezcano <[email protected]>
Cc: Richard Cochran <[email protected]>
Cc: Prarit Bhargava <[email protected]>
Cc: Stephen Boyd <[email protected]>
Cc: Mark Salter <[email protected]>
Cc: Aurelien Jacquiot <[email protected]>
Cc: [email protected]
Signed-off-by: Nicolai Stange <[email protected]>
Signed-off-by: John Stultz <[email protected]>

1 files changed, 2 insertions, 0 deletions

diff --git a/arch/c6x/platforms/timer64.c b/arch/c6x/platforms/timer64.c
index c19901e5f055..0bd0452ded80 100644
--- a/arch/c6x/platforms/timer64.c
+++ b/arch/c6x/platforms/timer64.c
@@ -234,7 +234,9 @@ void __init timer64_init(void)
 	clockevents_calc_mult_shift(cd, c6x_core_freq / TIMER_DIVISOR, 5);
 
 	cd->max_delta_ns	= clockevent_delta2ns(0x7fffffff, cd);
+	cd->max_delta_ticks	= 0x7fffffff;
 	cd->min_delta_ns	= clockevent_delta2ns(250, cd);
+	cd->min_delta_ticks	= 250;
 
 	cd->cpumask		= cpumask_of(smp_processor_id());