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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>
This commit is contained in:
Kevin Hilman 2007-10-18 23:04:43 -07:00 committed by Tony Lindgren
parent 457fb60583
commit 06cad098d2
3 changed files with 10 additions and 2 deletions
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1
arch/arm/Kconfig
View File

@ -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).

10
arch/arm/mach-omap1/time.c
View File

@ -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:

1
arch/arm/plat-omap/Kconfig
View File

@ -11,7 +11,6 @@ choice
config ARCH_OMAP1
bool "TI OMAP1"
select GENERIC_CLOCKEVENTS
config ARCH_OMAP2
bool "TI OMAP2"