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authorKevin Hilman <khilman@mvista.com>2007-10-18 23:04:43 -0700
committerTony Lindgren <tony@atomide.com>2008-03-20 16:56:09 +0200
commit06cad098d28e02d2ee3ed587bb261377e4ae2f17 (patch)
tree3fcea2c58607af9dc5a6c5849f529b0b0df0d7b3 /arch/arm
parent457fb605834504af294916411be128a9b21fc3f6 (diff)
downloadblackbird-op-linux-06cad098d28e02d2ee3ed587bb261377e4ae2f17.tar.gz
blackbird-op-linux-06cad098d28e02d2ee3ed587bb261377e4ae2f17.zip
ARM: OMAP: Fix clockevent support for hrtimers
One-shot mode was broken in MPU-timer support for OMAP1 due to a typo. Also, ensure timer is stopped before changing the auto-reload flag. The TRM says changing the AR flag when timer is running is undefined. Also set GENERIC_CLOCKEVENTS for all omaps. Signed-off-by: Tim Bird <tim.bird@am.sony.com> Signed-off-by: Kevin Hilman <khilman@mvista.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/Kconfig1
-rw-r--r--arch/arm/mach-omap1/time.c10
-rw-r--r--arch/arm/plat-omap/Kconfig1
3 files changed, 10 insertions, 2 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 955fc53c1c01..4039a133006e 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -469,6 +469,7 @@ config ARCH_OMAP
bool "TI OMAP"
select GENERIC_GPIO
select GENERIC_TIME
+ select GENERIC_CLOCKEVENTS
help
Support for TI's OMAP platform (OMAP1 and OMAP2).
diff --git a/arch/arm/mach-omap1/time.c b/arch/arm/mach-omap1/time.c
index 237651ebae5d..572a2dbc72ab 100644
--- a/arch/arm/mach-omap1/time.c
+++ b/arch/arm/mach-omap1/time.c
@@ -132,13 +132,20 @@ static inline void omap_mpu_timer_start(int nr, unsigned long load_val,
timer->cntl = timerflags;
}
+static inline void omap_mpu_timer_stop(int nr)
+{
+ volatile omap_mpu_timer_regs_t* timer = omap_mpu_timer_base(nr);
+
+ timer->cntl &= ~MPU_TIMER_ST;
+}
+
/*
* ---------------------------------------------------------------------------
* MPU timer 1 ... count down to zero, interrupt, reload
* ---------------------------------------------------------------------------
*/
static int omap_mpu_set_next_event(unsigned long cycles,
- struct clock_event_device *evt)
+ struct clock_event_device *evt)
{
omap_mpu_timer_start(0, cycles, 0);
return 0;
@@ -152,6 +159,7 @@ static void omap_mpu_set_mode(enum clock_event_mode mode,
omap_mpu_set_autoreset(0);
break;
case CLOCK_EVT_MODE_ONESHOT:
+ omap_mpu_timer_stop(0);
omap_mpu_remove_autoreset(0);
break;
case CLOCK_EVT_MODE_UNUSED:
diff --git a/arch/arm/plat-omap/Kconfig b/arch/arm/plat-omap/Kconfig
index c1f7e5a819a3..b917206ee906 100644
--- a/arch/arm/plat-omap/Kconfig
+++ b/arch/arm/plat-omap/Kconfig
@@ -11,7 +11,6 @@ choice
config ARCH_OMAP1
bool "TI OMAP1"
- select GENERIC_CLOCKEVENTS
config ARCH_OMAP2
bool "TI OMAP2"
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