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authorAtsushi Nemoto <anemo@mba.ocn.ne.jp>2006-10-24 00:21:27 +0900
committerRalf Baechle <ralf@linux-mips.org>2006-10-31 20:13:23 +0000
commit16b7b2ac0148e839da86af8747b6fa4aad43a9b7 (patch)
tree93912ae2e9c64f71a8cca028677fd918b9edf0fa /arch/mips/sgi-ip27/ip27-timer.c
parent70e46f48cb5933119712ee27945309a4bfc98282 (diff)
[MIPS] Fixup migration to GENERIC_TIME
Since we already moved to GENERIC_TIME, we should implement alternatives of old do_gettimeoffset routines to get sub-jiffies resolution from gettimeofday(). This patch includes: * MIPS clocksource support (based on works by Manish Lachwani). * remove unused gettimeoffset routines and related codes. * remove unised 64bit do_div64_32(). * simplify mips_hpt_init. (no argument needed, __init tag) * simplify c0_hpt_timer_init. (no need to write to c0_count) * remove some hpt_init routines. * mips_hpt_mask variable to specify bitmask of hpt value. * convert jmr3927_do_gettimeoffset to jmr3927_hpt_read. * convert ip27_do_gettimeoffset to ip27_hpt_read. * convert bcm1480_do_gettimeoffset to bcm1480_hpt_read. * simplify sb1250 hpt functions. (no need to subtract and shift) Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/sgi-ip27/ip27-timer.c')
-rw-r--r--arch/mips/sgi-ip27/ip27-timer.c16
1 files changed, 7 insertions, 9 deletions
diff --git a/arch/mips/sgi-ip27/ip27-timer.c b/arch/mips/sgi-ip27/ip27-timer.c
index 4e870fc4469..c965705f342 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>
@@ -248,12 +241,17 @@ void __init plat_timer_setup(struct irqaction *irq)
setup_irq(irqno, &rt_irqaction);
}
+static unsigned int ip27_hpt_read(void)
+{
+ return REMOTE_HUB_L(cputonasid(0), PI_RT_COUNT);
+}
+
void __init ip27_time_init(void)
{
+ mips_hpt_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)