diff options
| author | Mikael Pettersson <mikpe@it.uu.se> | 2009-10-29 21:46:55 +0300 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2009-10-29 21:46:55 +0300 |
| commit | 980f2296b5a8dfe589f023fd34229dcfdcf280fa (patch) | |
| tree | 033746bf0eb178c0c86ddb365a0d93645c3e930f /arch/arm/plat-iop/time.c | |
| parent | 469d30448dad13600cdd246024f9db8e80614c45 (diff) | |
| download | linux-980f2296b5a8dfe589f023fd34229dcfdcf280fa.tar.xz | |
iop: enable generic time
This updates the IOP platform to use the kernel's generic time
framework. With clockevent support in place, this reduces to
selecting GENERIC_TIME and removing the platform's private timer
->offset() operation (iop_gettimeoffset).
Tested on n2100, compile-tested for all plat-iop machines.
Signed-off-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'arch/arm/plat-iop/time.c')
| -rw-r--r-- | arch/arm/plat-iop/time.c | 29 |
1 files changed, 0 insertions, 29 deletions
diff --git a/arch/arm/plat-iop/time.c b/arch/arm/plat-iop/time.c index a550e96394ab..aaaef3b4bc65 100644 --- a/arch/arm/plat-iop/time.c +++ b/arch/arm/plat-iop/time.c @@ -140,33 +140,6 @@ static void __init iop_clockevent_set_hz(struct clock_event_device *ce, unsigned ce->name, ce->shift, ce->mult); } -static unsigned long ticks_per_usec; -static unsigned long next_jiffy_time; - -unsigned long iop_gettimeoffset(void) -{ - unsigned long offset, temp; - - /* enable cp6, if necessary, to avoid taking the overhead of an - * undefined instruction trap - */ - asm volatile ( - "mrc p15, 0, %0, c15, c1, 0\n\t" - "tst %0, #(1 << 6)\n\t" - "orreq %0, %0, #(1 << 6)\n\t" - "mcreq p15, 0, %0, c15, c1, 0\n\t" -#ifdef CONFIG_CPU_XSCALE - "mrceq p15, 0, %0, c15, c1, 0\n\t" - "moveq %0, %0\n\t" - "subeq pc, pc, #4\n\t" -#endif - : "=r"(temp) : : "cc"); - - offset = next_jiffy_time - read_tcr1(); - - return offset / ticks_per_usec; -} - static irqreturn_t iop_timer_interrupt(int irq, void *dev_id) { @@ -196,8 +169,6 @@ void __init iop_init_time(unsigned long tick_rate) u32 timer_ctl; ticks_per_jiffy = DIV_ROUND_CLOSEST(tick_rate, HZ); - ticks_per_usec = tick_rate / 1000000; - next_jiffy_time = 0xffffffff; iop_tick_rate = tick_rate; timer_ctl = IOP_TMR_EN | IOP_TMR_PRIVILEGED | |