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| author | Dan Williams <dan.j.williams@intel.com> | 2007-07-20 05:07:26 +0400 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2007-07-20 12:35:42 +0400 |
| commit | 70c14ff0e9f5e1f5456587b827620e636ba70a09 (patch) | |
| tree | bcd34365e64d6537d833f649a46a534f3a0ff2c6 /arch/arm/plat-iop | |
| parent | 7dea1b20066cd30fb54da7e686b16b5e38b46b2d (diff) | |
| download | linux-70c14ff0e9f5e1f5456587b827620e636ba70a09.tar.xz | |
[ARM] 4495/1: iop: combined watchdog timer driver for iop3xx and iop13xx
In order for this driver to be shared across the iop architectures the
iop3xx and iop13xx header files are modified to present a common interface
for the iop_wdt driver.
Details:
* iop13xx supports disabling the timer while iop3xx does not. This requires
a few 'compatibility' definitions in include/asm-arm/hardware/iop3xx.h to
preclude adding #ifdef CONFIG_ARCH_IOP13XX blocks to the driver code.
* The heartbeat interval is derived from the internal bus clock rate, so this
this patch also exports the tick rate to the iop_wdt driver.
Cc: Curt Bruns <curt.e.bruns@intel.com>
Cc: Peter Milne <peter.milne@d-tacq.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Wim Van Sebroeck <wim@iguana.be>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/plat-iop')
| -rw-r--r-- | arch/arm/plat-iop/time.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm/plat-iop/time.c b/arch/arm/plat-iop/time.c index 100d57ad98ed..ba3d21d8fba3 100644 --- a/arch/arm/plat-iop/time.c +++ b/arch/arm/plat-iop/time.c @@ -78,6 +78,13 @@ static struct irqaction iop_timer_irq = { .flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL, }; +static unsigned long iop_tick_rate; +unsigned long get_iop_tick_rate(void) +{ + return iop_tick_rate; +} +EXPORT_SYMBOL(get_iop_tick_rate); + void __init iop_init_time(unsigned long tick_rate) { u32 timer_ctl; @@ -85,6 +92,7 @@ void __init iop_init_time(unsigned long tick_rate) ticks_per_jiffy = (tick_rate + HZ/2) / HZ; ticks_per_usec = tick_rate / 1000000; next_jiffy_time = 0xffffffff; + iop_tick_rate = tick_rate; timer_ctl = IOP_TMR_EN | IOP_TMR_PRIVILEGED | IOP_TMR_RELOAD | IOP_TMR_RATIO_1_1; |