summaryrefslogtreecommitdiffstats
path: root/arch/arm/plat-iop
diff options
context:
space:
mode:
authorLennert Buytenhek <buytenh@wantstofly.org>2006-09-18 23:21:38 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2006-09-25 10:25:45 +0100
commit38ce73ebd74a9a1738b73619557f2397c59ba628 (patch)
tree02c812c665d0bb9c6872f81ad64328306fa3157f /arch/arm/plat-iop
parent0b29de4a6ac0936f56b974a3c19bd9c24ac5b5d7 (diff)
downloadlinux-38ce73ebd74a9a1738b73619557f2397c59ba628.tar.bz2
[ARM] 3825/1: iop3xx: use cp6 enable/disable macros
Add CP6 enable/disable sequences to the timekeeping code and the IRQ code. As a result, we can't depend on CP6 access being enabled when we enter get_irqnr_and_base anymore, so switch the latter over to using memory-mapped accesses for now. Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> 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.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm/plat-iop/time.c b/arch/arm/plat-iop/time.c
index 5730a0d7ed67..bed20f3669f4 100644
--- a/arch/arm/plat-iop/time.c
+++ b/arch/arm/plat-iop/time.c
@@ -51,7 +51,9 @@ iop3xx_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
{
write_seqlock(&xtime_lock);
+ iop3xx_cp6_enable();
asm volatile("mcr p6, 0, %0, c6, c1, 0" : : "r" (1));
+ iop3xx_cp6_disable();
while ((signed long)(next_jiffy_time - *IOP3XX_TU_TCR1)
>= ticks_per_jiffy) {
@@ -85,10 +87,12 @@ void __init iop3xx_init_time(unsigned long tick_rate)
* We use timer 0 for our timer interrupt, and timer 1 as
* monotonic counter for tracking missed jiffies.
*/
+ iop3xx_cp6_enable();
asm volatile("mcr p6, 0, %0, c4, c1, 0" : : "r" (ticks_per_jiffy - 1));
asm volatile("mcr p6, 0, %0, c0, c1, 0" : : "r" (timer_ctl));
asm volatile("mcr p6, 0, %0, c5, c1, 0" : : "r" (0xffffffff));
asm volatile("mcr p6, 0, %0, c1, c1, 0" : : "r" (timer_ctl));
+ iop3xx_cp6_disable();
setup_irq(IRQ_IOP3XX_TIMER0, &iop3xx_timer_irq);
}