clockevents/drivers/sh_mtu2: Migrate to new 'set-state' interface

Migrate sh_mtu2 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.

Cc: Magnus Damm <damm+renesas@opensource.se>
Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

1 files changed, 16 insertions, 26 deletions

diff --git a/drivers/clocksource/sh_mtu2.c b/drivers/clocksource/sh_mtu2.c
index 3d88698cf2b8..f1985da8113f 100644
--- a/drivers/clocksource/sh_mtu2.c
+++ b/drivers/clocksource/sh_mtu2.c
@@ -276,36 +276,25 @@ static struct sh_mtu2_channel *ced_to_sh_mtu2(struct clock_event_device *ced)
         return container_of(ced, struct sh_mtu2_channel, ced);
 }
 
-static void sh_mtu2_clock_event_mode(enum clock_event_mode mode,
-                                    struct clock_event_device *ced)
+static int sh_mtu2_clock_event_shutdown(struct clock_event_device *ced)
 {
         struct sh_mtu2_channel *ch = ced_to_sh_mtu2(ced);
-        int disabled = 0;
 
-        /* deal with old setting first */
-        switch (ced->mode) {
-        case CLOCK_EVT_MODE_PERIODIC:
+        sh_mtu2_disable(ch);
+        return 0;
+}
+
+static int sh_mtu2_clock_event_set_periodic(struct clock_event_device *ced)
+{
+        struct sh_mtu2_channel *ch = ced_to_sh_mtu2(ced);
+
+        if (clockevent_state_periodic(ced))
                 sh_mtu2_disable(ch);
-                disabled = 1;
-                break;
-        default:
-                break;
-        }
 
-        switch (mode) {
-        case CLOCK_EVT_MODE_PERIODIC:
-                dev_info(&ch->mtu->pdev->dev,
-                         "ch%u: used for periodic clock events\n", ch->index);
-                sh_mtu2_enable(ch);
-                break;
-        case CLOCK_EVT_MODE_UNUSED:
-                if (!disabled)
-                        sh_mtu2_disable(ch);
-                break;
-        case CLOCK_EVT_MODE_SHUTDOWN:
-        default:
-                break;
-        }
+        dev_info(&ch->mtu->pdev->dev, "ch%u: used for periodic clock events\n",
+                 ch->index);
+        sh_mtu2_enable(ch);
+        return 0;
 }
 
 static void sh_mtu2_clock_event_suspend(struct clock_event_device *ced)
@@ -327,7 +316,8 @@ static void sh_mtu2_register_clockevent(struct sh_mtu2_channel *ch,
         ced->features = CLOCK_EVT_FEAT_PERIODIC;
         ced->rating = 200;
         ced->cpumask = cpu_possible_mask;
-        ced->set_mode = sh_mtu2_clock_event_mode;
+        ced->set_state_shutdown = sh_mtu2_clock_event_shutdown;
+        ced->set_state_periodic = sh_mtu2_clock_event_set_periodic;
         ced->suspend = sh_mtu2_clock_event_suspend;
         ced->resume = sh_mtu2_clock_event_resume;