diff options
| author | Lennert Buytenhek <buytenh@wantstofly.org> | 2006-09-18 23:21:38 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2006-09-25 10:25:45 +0100 |
| commit | 38ce73ebd74a9a1738b73619557f2397c59ba628 (patch) | |
| tree | 02c812c665d0bb9c6872f81ad64328306fa3157f /arch/arm/plat-iop | |
| parent | 0b29de4a6ac0936f56b974a3c19bd9c24ac5b5d7 (diff) | |
| download | linux-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.c | 4 |
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); } |