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authorViresh Kumar <viresh.kumar@linaro.org>2015-07-06 16:41:59 +0530
committerRalf Baechle <ralf@linux-mips.org>2015-09-03 12:07:52 +0200
commit57e148cabbb2f1e6770d6a506088486142b26b97 (patch)
tree5a831e30a7561402f12d763b46872ab8462cb129 /arch/mips
parent877c61dc63c2eaa98515abfd89596f293b543342 (diff)
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MIPS: cevt-sb1250: Migrate to new 'set-state' interface
Migrate cevt-rsb1250 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/10606/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips')
-rw-r--r--arch/mips/kernel/cevt-sb1250.c45
1 files changed, 23 insertions, 22 deletions
diff --git a/arch/mips/kernel/cevt-sb1250.c b/arch/mips/kernel/cevt-sb1250.c
index 5ea6d6b1de15..3d860efd63b9 100644
--- a/arch/mips/kernel/cevt-sb1250.c
+++ b/arch/mips/kernel/cevt-sb1250.c
@@ -38,8 +38,20 @@
* The general purpose timer ticks at 1MHz independent if
* the rest of the system
*/
-static void sibyte_set_mode(enum clock_event_mode mode,
- struct clock_event_device *evt)
+
+static int sibyte_shutdown(struct clock_event_device *evt)
+{
+ void __iomem *cfg;
+
+ cfg = IOADDR(A_SCD_TIMER_REGISTER(smp_processor_id(), R_SCD_TIMER_CFG));
+
+ /* Stop the timer until we actually program a shot */
+ __raw_writeq(0, cfg);
+
+ return 0;
+}
+
+static int sibyte_set_periodic(struct clock_event_device *evt)
{
unsigned int cpu = smp_processor_id();
void __iomem *cfg, *init;
@@ -47,24 +59,11 @@ static void sibyte_set_mode(enum clock_event_mode mode,
cfg = IOADDR(A_SCD_TIMER_REGISTER(cpu, R_SCD_TIMER_CFG));
init = IOADDR(A_SCD_TIMER_REGISTER(cpu, R_SCD_TIMER_INIT));
- switch (mode) {
- case CLOCK_EVT_MODE_PERIODIC:
- __raw_writeq(0, cfg);
- __raw_writeq((V_SCD_TIMER_FREQ / HZ) - 1, init);
- __raw_writeq(M_SCD_TIMER_ENABLE | M_SCD_TIMER_MODE_CONTINUOUS,
- cfg);
- break;
-
- case CLOCK_EVT_MODE_ONESHOT:
- /* Stop the timer until we actually program a shot */
- case CLOCK_EVT_MODE_SHUTDOWN:
- __raw_writeq(0, cfg);
- break;
-
- case CLOCK_EVT_MODE_UNUSED: /* shuddup gcc */
- case CLOCK_EVT_MODE_RESUME:
- ;
- }
+ __raw_writeq(0, cfg);
+ __raw_writeq((V_SCD_TIMER_FREQ / HZ) - 1, init);
+ __raw_writeq(M_SCD_TIMER_ENABLE | M_SCD_TIMER_MODE_CONTINUOUS, cfg);
+
+ return 0;
}
static int sibyte_next_event(unsigned long delta, struct clock_event_device *cd)
@@ -89,7 +88,7 @@ static irqreturn_t sibyte_counter_handler(int irq, void *dev_id)
void __iomem *cfg;
unsigned long tmode;
- if (cd->mode == CLOCK_EVT_MODE_PERIODIC)
+ if (clockevent_state_periodic(cd))
tmode = M_SCD_TIMER_ENABLE | M_SCD_TIMER_MODE_CONTINUOUS;
else
tmode = 0;
@@ -129,7 +128,9 @@ void sb1250_clockevent_init(void)
cd->irq = irq;
cd->cpumask = cpumask_of(cpu);
cd->set_next_event = sibyte_next_event;
- cd->set_mode = sibyte_set_mode;
+ cd->set_state_shutdown = sibyte_shutdown;
+ cd->set_state_periodic = sibyte_set_periodic;
+ cd->set_state_oneshot = sibyte_shutdown;
clockevents_register_device(cd);
sb1250_mask_irq(cpu, irq);