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Diffstat (limited to 'arch/mips/sgi-ip27/ip27-timer.c')
-rw-r--r--arch/mips/sgi-ip27/ip27-timer.c51
1 files changed, 13 insertions, 38 deletions
diff --git a/arch/mips/sgi-ip27/ip27-timer.c b/arch/mips/sgi-ip27/ip27-timer.c
index 4e870fc4469..c20e9899b34 100644
--- a/arch/mips/sgi-ip27/ip27-timer.c
+++ b/arch/mips/sgi-ip27/ip27-timer.c
@@ -134,13 +134,6 @@ again:
irq_exit();
}
-unsigned long ip27_do_gettimeoffset(void)
-{
- unsigned long ct_cur1;
- ct_cur1 = REMOTE_HUB_L(cputonasid(0), PI_RT_COUNT) + CYCLES_PER_JIFFY;
- return (ct_cur1 - ct_cur[0]) * NSEC_PER_CYCLE / 1000;
-}
-
/* Includes for ioc3_init(). */
#include <asm/sn/types.h>
#include <asm/sn/sn0/addrs.h>
@@ -179,15 +172,6 @@ static __init unsigned long get_m48t35_time(void)
return mktime(year, month, date, hour, min, sec);
}
-static unsigned int startup_rt_irq(unsigned int irq)
-{
- return 0;
-}
-
-static void shutdown_rt_irq(unsigned int irq)
-{
-}
-
static void enable_rt_irq(unsigned int irq)
{
}
@@ -196,22 +180,13 @@ static void disable_rt_irq(unsigned int irq)
{
}
-static void mask_and_ack_rt(unsigned int irq)
-{
-}
-
-static void end_rt_irq(unsigned int irq)
-{
-}
-
static struct irq_chip rt_irq_type = {
.typename = "SN HUB RT timer",
- .startup = startup_rt_irq,
- .shutdown = shutdown_rt_irq,
- .enable = enable_rt_irq,
- .disable = disable_rt_irq,
- .ack = mask_and_ack_rt,
- .end = end_rt_irq,
+ .ack = disable_rt_irq,
+ .mask = disable_rt_irq,
+ .mask_ack = disable_rt_irq,
+ .unmask = enable_rt_irq,
+ .eoi = enable_rt_irq,
};
static struct irqaction rt_irqaction = {
@@ -221,8 +196,6 @@ static struct irqaction rt_irqaction = {
.name = "timer"
};
-extern int allocate_irqno(void);
-
void __init plat_timer_setup(struct irqaction *irq)
{
int irqno = allocate_irqno();
@@ -230,10 +203,7 @@ void __init plat_timer_setup(struct irqaction *irq)
if (irqno < 0)
panic("Can't allocate interrupt number for timer interrupt");
- irq_desc[irqno].status = IRQ_DISABLED;
- irq_desc[irqno].action = NULL;
- irq_desc[irqno].depth = 1;
- irq_desc[irqno].chip = &rt_irq_type;
+ set_irq_chip_and_handler(irqno, &rt_irq_type, handle_percpu_irq);
/* over-write the handler, we use our own way */
irq->handler = no_action;
@@ -248,12 +218,17 @@ void __init plat_timer_setup(struct irqaction *irq)
setup_irq(irqno, &rt_irqaction);
}
+static cycle_t ip27_hpt_read(void)
+{
+ return REMOTE_HUB_L(cputonasid(0), PI_RT_COUNT);
+}
+
void __init ip27_time_init(void)
{
+ clocksource_mips.read = ip27_hpt_read;
+ mips_hpt_frequency = CYCLES_PER_SEC;
xtime.tv_sec = get_m48t35_time();
xtime.tv_nsec = 0;
-
- do_gettimeoffset = ip27_do_gettimeoffset;
}
void __init cpu_time_init(void)