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| author | Linus Walleij <linus.walleij@linaro.org> | 2012-01-11 09:57:56 +0100 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2012-01-31 00:18:26 +0100 |
| commit | a3b86a6d6f5a7592192eb3fca22ae38de18f2171 (patch) | |
| tree | a2256430a83e7c1f0b48f44fe4ec7167dbefb78a | |
| parent | d3e8b7569ad733c063a95dc1a51928e6e7c40652 (diff) | |
| download | linux-3.10-a3b86a6d6f5a7592192eb3fca22ae38de18f2171.tar.gz linux-3.10-a3b86a6d6f5a7592192eb3fca22ae38de18f2171.tar.bz2 linux-3.10-a3b86a6d6f5a7592192eb3fca22ae38de18f2171.zip | |
ARM: plat-nomadik: modernize MTU timer
Modernize the MTU timer to rely on the clockevents core to
calculate mult and shift and setup the clock event.
Acked-by: Alessandro Rubini <rubini@unipv.it>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
| -rw-r--r-- | arch/arm/plat-nomadik/timer.c | 23 |
1 files changed, 3 insertions, 20 deletions
diff --git a/arch/arm/plat-nomadik/timer.c b/arch/arm/plat-nomadik/timer.c index 954a862ec4a..9222e5522a4 100644 --- a/arch/arm/plat-nomadik/timer.c +++ b/arch/arm/plat-nomadik/timer.c @@ -21,12 +21,6 @@ #include <asm/sched_clock.h> /* - * Guaranteed runtime conversion range in seconds for - * the clocksource and clockevent. - */ -#define MTU_MIN_RANGE 4 - -/* * The MTU device hosts four different counters, with 4 set of * registers. These are register names. */ @@ -102,7 +96,6 @@ static int nmdk_clkevt_next(unsigned long evt, struct clock_event_device *ev) void nmdk_clkevt_reset(void) { if (clkevt_periodic) { - /* Timer: configure load and background-load, and fire it up */ writel(nmdk_cycle, mtu_base + MTU_LR(1)); writel(nmdk_cycle, mtu_base + MTU_BGLR(1)); @@ -120,7 +113,6 @@ void nmdk_clkevt_reset(void) static void nmdk_clkevt_mode(enum clock_event_mode mode, struct clock_event_device *dev) { - switch (mode) { case CLOCK_EVT_MODE_PERIODIC: clkevt_periodic = true; @@ -224,17 +216,8 @@ void __init nmdk_timer_init(void __iomem *base) setup_sched_clock(nomadik_read_sched_clock, 32, rate); #endif - /* Timer 1 is used for events */ - - clockevents_calc_mult_shift(&nmdk_clkevt, rate, MTU_MIN_RANGE); - - nmdk_clkevt.max_delta_ns = - clockevent_delta2ns(0xffffffff, &nmdk_clkevt); - nmdk_clkevt.min_delta_ns = - clockevent_delta2ns(0x00000002, &nmdk_clkevt); - nmdk_clkevt.cpumask = cpumask_of(0); - - /* Register irq and clockevents */ + /* Timer 1 is used for events, register irq and clockevents */ setup_irq(IRQ_MTU0, &nmdk_timer_irq); - clockevents_register_device(&nmdk_clkevt); + nmdk_clkevt.cpumask = cpumask_of(0); + clockevents_config_and_register(&nmdk_clkevt, rate, 2, 0xffffffffU); } |