MIPS: cevt-ds1287: Migrate to new 'set-state' interface

Migrate cevt-ds1287 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.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: linux-mips@linux-mips.org
Cc: linaro-kernel@lists.linaro.org
Cc: Thomas Gleixner <tglx@linutronix.de>
Patchwork: https://patchwork.linux-mips.org/patch/10603/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 22 insertions, 15 deletions

diff --git a/arch/mips/kernel/cevt-ds1287.c b/arch/mips/kernel/cevt-ds1287.c
index ff1f01b72270..77a5ddf53f57 100644
--- a/arch/mips/kernel/cevt-ds1287.c
+++ b/arch/mips/kernel/cevt-ds1287.c
@@ -59,27 +59,32 @@ static int ds1287_set_next_event(unsigned long delta,
         return -EINVAL;
 }
 
-static void ds1287_set_mode(enum clock_event_mode mode,
-                            struct clock_event_device *evt)
+static int ds1287_shutdown(struct clock_event_device *evt)
 {
         u8 val;
 
         spin_lock(&rtc_lock);
 
         val = CMOS_READ(RTC_REG_B);
+        val &= ~RTC_PIE;
+        CMOS_WRITE(val, RTC_REG_B);
 
-        switch (mode) {
-        case CLOCK_EVT_MODE_PERIODIC:
-                val |= RTC_PIE;
-                break;
-        default:
-                val &= ~RTC_PIE;
-                break;
-        }
+        spin_unlock(&rtc_lock);
+        return 0;
+}
 
+static int ds1287_set_periodic(struct clock_event_device *evt)
+{
+        u8 val;
+
+        spin_lock(&rtc_lock);
+
+        val = CMOS_READ(RTC_REG_B);
+        val |= RTC_PIE;
         CMOS_WRITE(val, RTC_REG_B);
 
         spin_unlock(&rtc_lock);
+        return 0;
 }
 
 static void ds1287_event_handler(struct clock_event_device *dev)
@@ -87,11 +92,13 @@ static void ds1287_event_handler(struct clock_event_device *dev)
 }
 
 static struct clock_event_device ds1287_clockevent = {
-        .name           = "ds1287",
-        .features       = CLOCK_EVT_FEAT_PERIODIC,
-        .set_next_event = ds1287_set_next_event,
-        .set_mode       = ds1287_set_mode,
-        .event_handler  = ds1287_event_handler,
+        .name                   = "ds1287",
+        .features               = CLOCK_EVT_FEAT_PERIODIC,
+        .set_next_event         = ds1287_set_next_event,
+        .set_state_shutdown     = ds1287_shutdown,
+        .set_state_periodic     = ds1287_set_periodic,
+        .tick_resume            = ds1287_shutdown,
+        .event_handler          = ds1287_event_handler,
 };
 
 static irqreturn_t ds1287_interrupt(int irq, void *dev_id)