unicore/time: Migrate to new 'set-state' interface

Migrate unicore driver to the new 'set-state' interface provided by
clockevents core, the earlier 'set-mode' interface is marked obsolete
now.

This also enables us to implement callbacks for new states of clockevent
devices, for example: ONESHOT_STOPPED.

We weren't doing anything for PERIODIC or RESUME modes and so their
callbacks aren't implemented.

Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>

1 files changed, 10 insertions, 19 deletions

diff --git a/arch/unicore32/kernel/time.c b/arch/unicore32/kernel/time.c
index d3824b2ff644..ac4c5449bb88 100644
--- a/arch/unicore32/kernel/time.c
+++ b/arch/unicore32/kernel/time.c
@@ -46,29 +46,20 @@ puv3_osmr0_set_next_event(unsigned long delta, struct clock_event_device *c)
         return (signed)(next - oscr) <= MIN_OSCR_DELTA ? -ETIME : 0;
 }
 
-static void
-puv3_osmr0_set_mode(enum clock_event_mode mode, struct clock_event_device *c)
+static int puv3_osmr0_shutdown(struct clock_event_device *evt)
 {
-        switch (mode) {
-        case CLOCK_EVT_MODE_ONESHOT:
-        case CLOCK_EVT_MODE_UNUSED:
-        case CLOCK_EVT_MODE_SHUTDOWN:
-                writel(readl(OST_OIER) & ~OST_OIER_E0, OST_OIER);
-                writel(readl(OST_OSSR) & ~OST_OSSR_M0, OST_OSSR);
-                break;
-
-        case CLOCK_EVT_MODE_RESUME:
-        case CLOCK_EVT_MODE_PERIODIC:
-                break;
-        }
+        writel(readl(OST_OIER) & ~OST_OIER_E0, OST_OIER);
+        writel(readl(OST_OSSR) & ~OST_OSSR_M0, OST_OSSR);
+        return 0;
 }
 
 static struct clock_event_device ckevt_puv3_osmr0 = {
-        .name           = "osmr0",
-        .features       = CLOCK_EVT_FEAT_ONESHOT,
-        .rating         = 200,
-        .set_next_event = puv3_osmr0_set_next_event,
-        .set_mode       = puv3_osmr0_set_mode,
+        .name                   = "osmr0",
+        .features               = CLOCK_EVT_FEAT_ONESHOT,
+        .rating                 = 200,
+        .set_next_event         = puv3_osmr0_set_next_event,
+        .set_state_shutdown     = puv3_osmr0_shutdown,
+        .set_state_oneshot      = puv3_osmr0_shutdown,
 };
 
 static cycle_t puv3_read_oscr(struct clocksource *cs)