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| author | Linus Walleij <linus.walleij@linaro.org> | 2011-09-08 21:22:32 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-10-17 09:12:43 +0100 |
| commit | 6d8ce7129f6c4c2f8716d6a771d59f263deab898 (patch) | |
| tree | 00dc17d4332da512155b8332534301e23513532a /arch/arm | |
| parent | 02f5632122ccbb6eb0c3b3f612b564b659defb32 (diff) | |
| download | linux-3.10-6d8ce7129f6c4c2f8716d6a771d59f263deab898.tar.gz linux-3.10-6d8ce7129f6c4c2f8716d6a771d59f263deab898.tar.bz2 linux-3.10-6d8ce7129f6c4c2f8716d6a771d59f263deab898.zip | |
ARM: 7086/2: mach-integrator: modernize clock event registration
Drop mult, shift and delta calculations and let the
clockevent core scale this as appropriate.
Set the minimum interval to 1 rather than 15 (0xf), there
is nothing in the data sheets I have indicating that 15
should be some minimum value.
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-integrator/integrator_ap.c | 15 |
1 files changed, 5 insertions, 10 deletions
diff --git a/arch/arm/mach-integrator/integrator_ap.c b/arch/arm/mach-integrator/integrator_ap.c index e66a8bce399..0a6f397f122 100644 --- a/arch/arm/mach-integrator/integrator_ap.c +++ b/arch/arm/mach-integrator/integrator_ap.c @@ -398,12 +398,10 @@ static int clkevt_set_next_event(unsigned long next, struct clock_event_device * static struct clock_event_device integrator_clockevent = { .name = "timer1", - .shift = 34, .features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT, .set_mode = clkevt_set_mode, .set_next_event = clkevt_set_next_event, .rating = 300, - .cpumask = cpu_all_mask, }; static struct irqaction integrator_timer_irq = { @@ -415,9 +413,9 @@ static struct irqaction integrator_timer_irq = { static void integrator_clockevent_init(u32 khz) { - struct clock_event_device *evt = &integrator_clockevent; unsigned int ctrl = 0; + /* Calculate and program a divisor */ if (khz * 1000 > 0x100000 * HZ) { khz /= 256; ctrl |= TIMER_CTRL_DIV256; @@ -425,17 +423,14 @@ static void integrator_clockevent_init(u32 khz) khz /= 16; ctrl |= TIMER_CTRL_DIV16; } - timer_reload = khz * 1000 / HZ; writel(ctrl, clkevt_base + TIMER_CTRL); - evt->irq = IRQ_TIMERINT1; - evt->mult = div_sc(khz, NSEC_PER_MSEC, evt->shift); - evt->max_delta_ns = clockevent_delta2ns(0xffff, evt); - evt->min_delta_ns = clockevent_delta2ns(0xf, evt); - setup_irq(IRQ_TIMERINT1, &integrator_timer_irq); - clockevents_register_device(evt); + clockevents_config_and_register(&integrator_clockevent, + khz * 1000, + 1, + 0xffffU); } /* |