[MIPS] Sibyte: Finish conversion to modern time APIs.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/sibyte/bcm1480/time.c b/arch/mips/sibyte/bcm1480/time.c
index 5b4bfbb..c730744 100644
--- a/arch/mips/sibyte/bcm1480/time.c
+++ b/arch/mips/sibyte/bcm1480/time.c
@@ -27,9 +27,8 @@
*/
#include <linux/clockchips.h>
#include <linux/interrupt.h>
-#include <linux/sched.h>
+#include <linux/percpu.h>
#include <linux/spinlock.h>
-#include <linux/kernel_stat.h>
#include <asm/irq.h>
#include <asm/addrspace.h>
@@ -101,25 +100,36 @@
break;
case CLOCK_EVT_MODE_UNUSED: /* shuddup gcc */
+ case CLOCK_EVT_MODE_RESUME:
;
}
}
-struct clock_event_device sibyte_hpt_clockevent = {
- .name = "bcm1480-counter",
- .features = CLOCK_EVT_FEAT_PERIODIC,
- .set_mode = sibyte_set_mode,
- .shift = 32,
- .irq = 0,
-};
+static int sibyte_next_event(unsigned long delta, struct clock_event_device *cd)
+{
+ unsigned int cpu = smp_processor_id();
+ void __iomem *timer_init;
+ unsigned int cnt;
+ int res;
+
+ timer_init = IOADDR(A_SCD_TIMER_REGISTER(cpu, R_SCD_TIMER_INIT));
+ cnt = __raw_readq(timer_init);
+ cnt += delta;
+ __raw_writeq(cnt, timer_init);
+ res = ((long)(__raw_readq(timer_init) - cnt ) > 0) ? -ETIME : 0;
+
+ return res;
+}
+
+static DEFINE_PER_CPU(struct clock_event_device, sibyte_hpt_clockevent);
static irqreturn_t sibyte_counter_handler(int irq, void *dev_id)
{
- struct clock_event_device *cd = &sibyte_hpt_clockevent;
unsigned int cpu = smp_processor_id();
+ struct clock_event_device *cd = &per_cpu(sibyte_hpt_clockevent, cpu);
/* Reset the timer */
- __raw_writeq(M_SCD_TIMER_ENABLE|M_SCD_TIMER_MODE_CONTINUOUS,
+ __raw_writeq(M_SCD_TIMER_ENABLE | M_SCD_TIMER_MODE_CONTINUOUS,
IOADDR(A_SCD_TIMER_REGISTER(cpu, R_SCD_TIMER_CFG)));
cd->event_handler(cd);
@@ -140,26 +150,23 @@
* called directly from irq_handler.S when IP[4] is set during an
* interrupt
*/
-static void __init sb1480_clockevent_init(void)
+void __cpuinit sb1480_clockevent_init(void)
{
unsigned int cpu = smp_processor_id();
unsigned int irq = K_BCM1480_INT_TIMER_0 + cpu;
+ struct clock_event_device *cd = &per_cpu(sibyte_hpt_clockevent, cpu);
+
+ cd->name = "bcm1480-counter";
+ cd->features = CLOCK_EVT_FEAT_PERIODIC |
+ CLOCK_EVT_MODE_ONESHOT;
+ cd->set_next_event = sibyte_next_event;
+ cd->set_mode = sibyte_set_mode;
+ cd->irq = irq;
+ clockevent_set_clock(cd, BCM1480_HPT_VALUE);
setup_irq(irq, &sibyte_counter_irqaction);
}
-void bcm1480_timer_interrupt(void)
-{
- int cpu = smp_processor_id();
- int irq = K_BCM1480_INT_TIMER_0 + cpu;
-
- /* Reset the timer */
- __raw_writeq(M_SCD_TIMER_ENABLE|M_SCD_TIMER_MODE_CONTINUOUS,
- IOADDR(A_SCD_TIMER_REGISTER(cpu, R_SCD_TIMER_CFG)));
-
- ll_timer_interrupt(irq);
-}
-
static cycle_t bcm1480_hpt_read(void)
{
/* We assume this function is called xtime_lock held. */
@@ -168,9 +175,26 @@
return (jiffies + 1) * (BCM1480_HPT_VALUE / HZ) - count;
}
+struct clocksource bcm1480_clocksource = {
+ .name = "MIPS",
+ .rating = 200,
+ .read = bcm1480_hpt_read,
+ .mask = CLOCKSOURCE_MASK(32),
+ .shift = 32,
+ .flags = CLOCK_SOURCE_IS_CONTINUOUS,
+};
+
+void __init sb1480_clocksource_init(void)
+{
+ struct clocksource *cs = &bcm1480_clocksource;
+
+ clocksource_set_clock(cs, BCM1480_HPT_VALUE);
+ clocksource_register(cs);
+}
+
void __init bcm1480_hpt_setup(void)
{
- clocksource_mips.read = bcm1480_hpt_read;
mips_hpt_frequency = BCM1480_HPT_VALUE;
+ sb1480_clocksource_init();
sb1480_clockevent_init();
}