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arm: Set frequencies for arm_timer 

Use qdev properties to allow board modelers to set the frequencies
for the sp804 timer. Each of the sp804's timers can have an
individual frequency. The timers default to 1MHz.

Signed-off-by: Mark Langsdorf <mark.langsdorf@calxeda.com>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Mark Langsdorf 2011-12-29 06:19:51 +00:00 committed by Peter Maydell
parent 78aca8a712
commit 104a26a236
1 changed files with 19 additions and 5 deletions
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24
hw/arm_timer.c
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@ -9,6 +9,8 @@
#include "sysbus.h"
#include "qemu-timer.h"
#include "qemu-common.h"
#include "qdev.h"
/* Common timer implementation. */
@ -178,6 +180,7 @@ typedef struct {
SysBusDevice busdev;
MemoryRegion iomem;
arm_timer_state *timer[2];
uint32_t freq0, freq1;
int level[2];
qemu_irq irq;
} sp804_state;
@ -269,10 +272,11 @@ static int sp804_init(SysBusDevice *dev)
qi = qemu_allocate_irqs(sp804_set_irq, s, 2);
sysbus_init_irq(dev, &s->irq);
/* ??? The timers are actually configurable between 32kHz and 1MHz, but
we don't implement that. */
s->timer[0] = arm_timer_init(1000000);
s->timer[1] = arm_timer_init(1000000);
/* The timers are configurable between 32kHz and 1MHz
* defaulting to 1MHz but overrideable as individual properties */
s->timer[0] = arm_timer_init(s->freq0);
s->timer[1] = arm_timer_init(s->freq1);
s->timer[0]->irq = qi[0];
s->timer[1]->irq = qi[1];
memory_region_init_io(&s->iomem, &sp804_ops, s, "sp804", 0x1000);
@ -281,6 +285,16 @@ static int sp804_init(SysBusDevice *dev)
return 0;
}
static SysBusDeviceInfo sp804_info = {
.init = sp804_init,
.qdev.name = "sp804",
.qdev.size = sizeof(sp804_state),
.qdev.props = (Property[]) {
DEFINE_PROP_UINT32("freq0", sp804_state, freq0, 1000000),
DEFINE_PROP_UINT32("freq1", sp804_state, freq1, 1000000),
DEFINE_PROP_END_OF_LIST(),
}
};
/* Integrator/CP timer module. */
@ -349,7 +363,7 @@ static int icp_pit_init(SysBusDevice *dev)
static void arm_timer_register_devices(void)
{
sysbus_register_dev("integrator_pit", sizeof(icp_pit_state), icp_pit_init);
sysbus_register_dev("sp804", sizeof(sp804_state), sp804_init);
sysbus_register_withprop(&sp804_info);
}
device_init(arm_timer_register_devices)