diff options
| author | Marc Zyngier <marc.zyngier@arm.com> | 2012-01-20 10:47:00 +0000 |
|---|---|---|
| committer | Marc Zyngier <marc.zyngier@arm.com> | 2012-04-27 13:35:34 +0100 |
| commit | 273d16adbccdfe3e4a9d02d286b8f1d76dc9e63f (patch) | |
| tree | ba71c8bef1f9887acbd977e7cc2ee66fdb6d2d25 | |
| parent | 0075242b3a2f78901172aaadf73beed762a1f02f (diff) | |
ARM: architected timers: add support for UP timer
If CONFIG_LOCAL_TIMERS is not defined, let the architected timer
driver register a single clock_event_device that is used as a
global timer.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
| -rw-r--r-- | arch/arm/kernel/arch_timer.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/arm/kernel/arch_timer.c b/arch/arm/kernel/arch_timer.c index 1a34eeebc26..154f0a1756b 100644 --- a/arch/arm/kernel/arch_timer.c +++ b/arch/arm/kernel/arch_timer.c @@ -246,6 +246,8 @@ static struct local_timer_ops arch_timer_ops __cpuinitdata = { .stop = arch_timer_stop, }; +static struct clock_event_device arch_timer_global_evt; + static int __init arch_timer_common_register(void) { int err; @@ -280,6 +282,17 @@ static int __init arch_timer_common_register(void) } err = local_timer_register(&arch_timer_ops); + if (err) { + /* + * We couldn't register as a local timer (could be + * because we're on a UP platform, or because some + * other local timer is already present...). Try as a + * global timer instead. + */ + arch_timer_global_evt.cpumask = cpumask_of(0); + err = arch_timer_setup(&arch_timer_global_evt); + } + if (err) goto out_free_irq; |