hexagon/time: 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 hexagon 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 <mingo@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Richard Kuo <rkuo@codeaurora.org>
Cc: linux-hexagon@vger.kernel.org
Acked-by: Richard Kuo <rkuo@codeaurora.org>
Signed-off-by: Nicolai Stange <nicstange@gmail.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>

diff --git a/arch/hexagon/kernel/time.c b/arch/hexagon/kernel/time.c
index ff4e9bf995e91cec460232ebdb9a878f073957c9..29b1f57116c8aaf973d62cdbebed8ffadd9c042b 100644 (file)
--- a/arch/hexagon/kernel/time.c
+++ b/arch/hexagon/kernel/time.c
@@ -199,7 +199,9 @@ void __init time_init_deferred(void)
        clockevents_calc_mult_shift(ce_dev, sleep_clk_freq, 4);
 
        ce_dev->max_delta_ns = clockevent_delta2ns(0x7fffffff, ce_dev);
+       ce_dev->max_delta_ticks = 0x7fffffff;
        ce_dev->min_delta_ns = clockevent_delta2ns(0xf, ce_dev);
+       ce_dev->min_delta_ticks = 0xf;
 
 #ifdef CONFIG_SMP
        setup_percpu_clockdev();