UPSTREAM: clocksource/drivers/rockchip: Add the dynamic irq flag to the timer

The rockchip timer is a broadcast timer. Add the CLOCK_EVT_FEAT_DYNIRQ flag
and set the cpumask to all possible cpus to save power by avoiding
unnecessary wakeups and IPIs.

BUG=chrome-os-partner:54522
TEST=Tested on gru, cat /proc/interrupts |grep timer

Change-Id: Ic7de570f35921a292e4687c2bcf408b37334f781
Signed-off-by: Huang Tao <huangtao@rock-chips.com>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Heiko Stuebner <heiko@sntech.de>
Tested-by: Jianqun Xu <jay.xu@rock-chips.com>
Signed-off-by: Caesar Wang <wxt@rock-chips.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
(cherry picked from git.linaro.org/people/daniel.lezcano/linux.git clockevents/next
 commit 11932c2ac6f8c0f20f12a38569a36f0d1b5cfd6b)
Reviewed-on: https://chromium-review.googlesource.com/353976
Reviewed-by: Douglas Anderson <dianders@chromium.org>

diff --git a/drivers/clocksource/rockchip_timer.c b/drivers/clocksource/rockchip_timer.c
index b991b288c8032740f4eb0a0a4a30d056fcbb6694..b510863fd1e108777fc3a53e9b0032d4bca37d43 100644 (file)
--- a/drivers/clocksource/rockchip_timer.c
+++ b/drivers/clocksource/rockchip_timer.c
@@ -150,12 +150,13 @@ static void __init rk_timer_init(struct device_node *np)
        }
 
        ce->name = TIMER_NAME;
-       ce->features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT;
+       ce->features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT |
+                      CLOCK_EVT_FEAT_DYNIRQ;
        ce->set_next_event = rk_timer_set_next_event;
        ce->set_state_shutdown = rk_timer_shutdown;
        ce->set_state_periodic = rk_timer_set_periodic;
        ce->irq = irq;
-       ce->cpumask = cpumask_of(0);
+       ce->cpumask = cpu_possible_mask;
        ce->rating = 250;
 
        rk_timer_interrupt_clear(ce);