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C++ div_sc函数代码示例

原作者: [db:作者] 来自: [db:来源] 收藏 邀请

本文整理汇总了C++中div_sc函数的典型用法代码示例。如果您正苦于以下问题：C++ div_sc函数的具体用法？C++ div_sc怎么用？C++ div_sc使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。



在下文中一共展示了div_sc函数的20个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的C++代码示例。

示例1: netx_timer_init

static void __init netx_timer_init(void)
{
	/* disable timer initially */
	writel(0, NETX_GPIO_COUNTER_CTRL(0));

	/* Reset the timer value to zero */
	writel(0, NETX_GPIO_COUNTER_CURRENT(0));

	writel(LATCH, NETX_GPIO_COUNTER_MAX(0));

	/* acknowledge interrupt */
	writel(COUNTER_BIT(0), NETX_GPIO_IRQ);

	/* Enable the interrupt in the specific timer
	 * register and start timer
	 */
	writel(COUNTER_BIT(0), NETX_GPIO_IRQ_ENABLE);
	writel(NETX_GPIO_COUNTER_CTRL_IRQ_EN | NETX_GPIO_COUNTER_CTRL_RUN,
			NETX_GPIO_COUNTER_CTRL(0));

	setup_irq(NETX_IRQ_TIMER0, &netx_timer_irq);

	/* Setup timer one for clocksource */
	writel(0, NETX_GPIO_COUNTER_CTRL(TIMER_CLOCKSOURCE));
	writel(0, NETX_GPIO_COUNTER_CURRENT(TIMER_CLOCKSOURCE));
	writel(0xffffffff, NETX_GPIO_COUNTER_MAX(TIMER_CLOCKSOURCE));

	writel(NETX_GPIO_COUNTER_CTRL_RUN,
			NETX_GPIO_COUNTER_CTRL(TIMER_CLOCKSOURCE));

	clocksource_netx.mult =
		clocksource_hz2mult(CLOCK_TICK_RATE, clocksource_netx.shift);
	clocksource_register(&clocksource_netx);

	netx_clockevent.mult = div_sc(CLOCK_TICK_RATE, NSEC_PER_SEC,
			netx_clockevent.shift);
	netx_clockevent.max_delta_ns =
		clockevent_delta2ns(0xfffffffe, &netx_clockevent);
	/* with max_delta_ns >= delta2ns(0x800) the system currently runs fine.
	 * Adding some safety ... */
	netx_clockevent.min_delta_ns =
		clockevent_delta2ns(0xa00, &netx_clockevent);
	netx_clockevent.cpumask = cpumask_of(0);
	clockevents_register_device(&netx_clockevent);
}
开发者ID:Medvedroid，项目名称:OT_903D-kernel-2.6.35.7，代码行数:45，代码来源:time.c


示例2: at91sam926x_clockevent_init

void __init at91sam926x_clockevent_init(void)
{
	/* Reset time-stamp counter */
	at91_sys_write(AT91_PIT_MR, 0);
	at91_sys_read(AT91_PIT_PIVR);

	/* Make IRQs happen for the system timer. */
	setup_irq(AT91_ID_SYS, &at91sam926x_timer_irq);

	clockevent_at91sam926x.mult = div_sc(CLOCK_TICK_RATE, NSEC_PER_SEC,
					     clockevent_at91sam926x.shift);
	clockevent_at91sam926x.max_delta_ns =
		clockevent_delta2ns(0xffffe, &clockevent_at91sam926x);
	clockevent_at91sam926x.min_delta_ns =
		clockevent_delta2ns(0xf, &clockevent_at91sam926x);
	clockevent_at91sam926x.cpumask = cpumask_of_cpu(0);
	clockevents_register_device(&clockevent_at91sam926x);
}
开发者ID:wesen，项目名称:lemonix，代码行数:18，代码来源:at91sam926x_time.c


示例3: sh_tmu_clock_event_start

static void sh_tmu_clock_event_start(struct sh_tmu_priv *p, int periodic)
{
	struct clock_event_device *ced = &p->ced;

	sh_tmu_enable(p);

	/* TODO: calculate good shift from rate and counter bit width */

	ced->shift = 32;
	ced->mult = div_sc(p->rate, NSEC_PER_SEC, ced->shift);
	ced->max_delta_ns = clockevent_delta2ns(0xffffffff, ced);
	ced->min_delta_ns = 5000;

	if (periodic) {
		p->periodic = (p->rate + HZ/2) / HZ;
		sh_tmu_set_next(p, p->periodic, 1);
	}
}
开发者ID:ANFS，项目名称:ANFS-kernel，代码行数:18，代码来源:sh_tmu.c


示例4: timer_init

void __init timer_init(int irq)
{
	timer_config();

	set_tcr2ns_scale(CLOCK_TICK_RATE);

	ckevt.mult = div_sc(CLOCK_TICK_RATE, NSEC_PER_SEC, ckevt.shift);
	ckevt.max_delta_ns = clockevent_delta2ns(MAX_DELTA, &ckevt);
	ckevt.min_delta_ns = clockevent_delta2ns(MIN_DELTA, &ckevt);
	ckevt.cpumask = cpumask_of(0);

	cksrc.mult = clocksource_hz2mult(CLOCK_TICK_RATE, cksrc.shift);

	setup_irq(irq, &timer_irq);

	clocksource_register(&cksrc);
	clockevents_register_device(&ckevt);
}
开发者ID:Medvedroid，项目名称:OT_903D-kernel-2.6.35.7，代码行数:18，代码来源:time.c


示例5: sh_cmt_clock_event_start

static void sh_cmt_clock_event_start(struct sh_cmt_priv *p, int periodic)
{
	struct clock_event_device *ced = &p->ced;

	sh_cmt_start(p, FLAG_CLOCKEVENT);

	/* TODO: calculate good shift from rate and counter bit width */

	ced->shift = 32;
	ced->mult = div_sc(p->rate, NSEC_PER_SEC, ced->shift);
	ced->max_delta_ns = clockevent_delta2ns(p->max_match_value, ced);
	ced->min_delta_ns = clockevent_delta2ns(0x1f, ced);

	if (periodic)
		sh_cmt_set_next(p, (p->rate + HZ/2) / HZ);
	else
		sh_cmt_set_next(p, p->max_match_value);
}
开发者ID:AppEngine，项目名称:linux-2.6，代码行数:18，代码来源:sh_cmt.c


示例6: arch_timer_setup

static void arch_timer_setup(unsigned int cpu)
{
	unsigned int txdivtime;
	struct clock_event_device *clk = &per_cpu(local_clockevent, cpu);
	char *name = per_cpu(local_clockevent_name, cpu);

	txdivtime = __core_reg_get(TXDIVTIME);

	txdivtime &= ~TXDIVTIME_DIV_BITS;
	txdivtime |= (HARDWARE_DIV & TXDIVTIME_DIV_BITS);

	__core_reg_set(TXDIVTIME, txdivtime);

	sprintf(name, "META %d", cpu);
	clk->name = name;
	clk->features = CLOCK_EVT_FEAT_ONESHOT,

	clk->rating = 200,
	clk->shift = 12,
	clk->irq = tbisig_map(TBID_SIGNUM_TRT),
	clk->set_mode = metag_timer_set_mode,
	clk->set_next_event = metag_timer_set_next_event,

	clk->mult = div_sc(hwtimer_freq, NSEC_PER_SEC, clk->shift);
	clk->max_delta_ns = clockevent_delta2ns(0x7fffffff, clk);
	clk->min_delta_ns = clockevent_delta2ns(0xf, clk);
	clk->cpumask = cpumask_of(cpu);

	clockevents_register_device(clk);

	/*
	 * For all non-boot CPUs we need to synchronize our free
	 * running clock (TXTIMER) with the boot CPU's clock.
	 *
	 * While this won't be accurate, it should be close enough.
	 */
	if (cpu) {
		unsigned int thread0 = cpu_2_hwthread_id[0];
		unsigned long val;

		val = core_reg_read(TXUCT_ID, TXTIMER_REGNUM, thread0);
		__core_reg_set(TXTIMER, val);
	}
}
开发者ID:ColinIanKing，项目名称:m576，代码行数:44，代码来源:metag_generic.c


示例7: mxs_nomatch_timer_init

/*
 * Set up timer interrupt, and return the current time in seconds.
 */
void mxs_nomatch_timer_init(struct mxs_sys_timer *timer)
{

	if (online_timer)
		return;

	online_timer = timer;

	cksrc_mxs_nomatch.mult = clocksource_hz2mult(CLOCK_TICK_RATE,
				cksrc_mxs_nomatch.shift);
	ckevt_timrot.mult = div_sc(CLOCK_TICK_RATE, NSEC_PER_SEC,
				ckevt_timrot.shift);
	ckevt_timrot.min_delta_ns = clockevent_delta2ns(2, &ckevt_timrot);
	ckevt_timrot.max_delta_ns = clockevent_delta2ns(0xFFF, &ckevt_timrot);
	ckevt_timrot.cpumask = cpumask_of(0);

	/* clear two timers */
	__raw_writel(0, online_timer->base + HW_TIMROT_TIMCOUNTn(0));
	__raw_writel(0, online_timer->base + HW_TIMROT_TIMCOUNTn(1));

	/* configure them */
	__raw_writel(
		(8 << BP_TIMROT_TIMCTRLn_SELECT) |  /* 32 kHz */
		BM_TIMROT_TIMCTRLn_RELOAD |
		BM_TIMROT_TIMCTRLn_UPDATE |
		BM_TIMROT_TIMCTRLn_IRQ_EN,
			online_timer->base + HW_TIMROT_TIMCTRLn(0));
	__raw_writel(
		(8 << BP_TIMROT_TIMCTRLn_SELECT) |  /* 32 kHz */
		BM_TIMROT_TIMCTRLn_RELOAD |
		BM_TIMROT_TIMCTRLn_UPDATE |
		BM_TIMROT_TIMCTRLn_IRQ_EN,
			online_timer->base + HW_TIMROT_TIMCTRLn(1));

	__raw_writel(CLOCK_TICK_RATE / HZ - 1,
			online_timer->base + HW_TIMROT_TIMCOUNTn(0));
	__raw_writel(0xFFFF, online_timer->base + HW_TIMROT_TIMCOUNTn(1));

	setup_irq(IRQ_TIMER0, &mxs_nomatch_timer_irq);

	clocksource_register(&cksrc_mxs_nomatch);
	clockevents_register_device(&ckevt_timrot);
}
开发者ID:fread-ink，项目名称:fread-kernel-k4，代码行数:46，代码来源:timer-nomatch.c


示例8: godarm_timer_init

static void __init godarm_timer_init(void){

	edb_trace();

	setup_irq(TIMER01_IRQ, &godarm_timer_irq);
	setup_irq(TIMER01_IRQ, &godarm_freetimer_irq);

	godarm_clocksource_init();
	timer0_clockevent.mult =
		div_sc(timer0_clk_hz, NSEC_PER_SEC, timer0_clockevent.shift);
	timer0_clockevent.max_delta_ns =
		clockevent_delta2ns(0xffffffff, &timer0_clockevent);
	timer0_clockevent.min_delta_ns =
		clockevent_delta2ns(0xf, &timer0_clockevent);

	timer0_clockevent.cpumask = cpumask_of(0);
	clockevents_register_device(&timer0_clockevent);
	edb_trace();
}
开发者ID:119-org，项目名称:hi3518-osdrv，代码行数:19，代码来源:core.c


示例9: setup_clkevt

static inline void setup_clkevt(u32 freq)
{
	unsigned int cmp;
	struct clock_event_device *evt = &gpt_clockevent;
	struct gpt_device *dev = id_to_dev(GPT_CLKEVT_ID);

	evt->mult = div_sc(freq, NSEC_PER_SEC, evt->shift);
	evt->max_delta_ns = clockevent_delta2ns(0xffffffff, evt);
	evt->min_delta_ns = clockevent_delta2ns(3, evt);
	evt->cpumask = cpumask_of(0);

	setup_gpt_dev_locked(dev, GPT_REPEAT, GPT_CLK_SRC_SYS, GPT_CLK_DIV_1,
		freq / HZ, clkevt_handler, GPT_ISR);

	__gpt_get_cmp(dev, &cmp);
	pr_alert("GPT1_CMP = %d, HZ = %d\n", cmp, HZ);

	clockevents_register_device(evt);
}
开发者ID:P-D-A，项目名称:android_kernel_lge_mt6753，代码行数:19，代码来源:mt_gpt.c


示例10: mxc_clockevent_init

static int __init mxc_clockevent_init(void)
{
	unsigned int clock;

	clock = clk_get_rate(timer_clk);

	clockevent_mxc.mult = div_sc(clock, NSEC_PER_SEC,
					clockevent_mxc.shift);
	clockevent_mxc.max_delta_ns =
			clockevent_delta2ns(0xfffffffe, &clockevent_mxc);
	clockevent_mxc.min_delta_ns =
			clockevent_delta2ns(0xff, &clockevent_mxc);

	clockevent_mxc.cpumask = cpumask_of_cpu(0);

	clockevents_register_device(&clockevent_mxc);

	return 0;
}
开发者ID:hugh-smtl，项目名称:linux-2.6，代码行数:19，代码来源:time.c


示例11: omap2_gp_clockevent_init

static void __init omap2_gp_clockevent_init(void)
{
	u32 tick_rate;
	int src;

	inited = 1;

	gptimer = omap_dm_timer_request_specific(gptimer_id);
	BUG_ON(gptimer == NULL);
	gptimer_wakeup = gptimer;

#if defined(CONFIG_OMAP_32K_TIMER)
	src = OMAP_TIMER_SRC_32_KHZ;
#else
	src = OMAP_TIMER_SRC_SYS_CLK;
	WARN(gptimer_id == 12, "WARNING: GPTIMER12 can only use the "
	     "secure 32KiHz clock source\n");
#endif

	if (gptimer_id != 12)
		WARN(IS_ERR_VALUE(omap_dm_timer_set_source(gptimer, src)),
		     "timer-gp: omap_dm_timer_set_source() failed\n");

	tick_rate = clk_get_rate(omap_dm_timer_get_fclk(gptimer));

	pr_info("OMAP clockevent source: GPTIMER%d at %u Hz\n",
		gptimer_id, tick_rate);

	omap2_gp_timer_irq.dev_id = (void *)gptimer;
	setup_irq(omap_dm_timer_get_irq(gptimer), &omap2_gp_timer_irq);
	omap_dm_timer_set_int_enable(gptimer, OMAP_TIMER_INT_OVERFLOW);

	clockevent_gpt.mult = div_sc(tick_rate, NSEC_PER_SEC,
				     clockevent_gpt.shift);
	clockevent_gpt.max_delta_ns =
		clockevent_delta2ns(0xffffffff, &clockevent_gpt);
	clockevent_gpt.min_delta_ns =
		clockevent_delta2ns(3, &clockevent_gpt);
		/* Timer internal resynch latency. */

	clockevent_gpt.cpumask = cpumask_of(0);
	clockevents_register_device(&clockevent_gpt);
}
开发者ID:CelticWebSolutions，项目名称:Android-Kernel-2.6.35-Nook-Tablet，代码行数:43，代码来源:timer-gp.c


示例12: tcc88xx_timer_init

static void __init tcc88xx_timer_init(void)
{
	unsigned long	rate;

	rate = TCC_TIMER_FREQ;

	pTIMER	= (volatile PTIMER) tcc_p2v(HwTMR_BASE);
	pPIC	= (volatile PPIC) tcc_p2v(HwPIC_BASE);

	pTIMER->TC32EN = 1;			/* Timer disable, Prescale is one */
	BITSET(pTIMER->TC32EN, Hw24);		/* Timer Enable */
	if (pTIMER->TC32IRQ & Hw31)		/* IRQ clear */
		BITSET(pTIMER->TC32IRQ, Hw31);

	ckevt_tcc88xx_osmr0.mult =
		div_sc(CLOCK_TICK_RATE, NSEC_PER_SEC, ckevt_tcc88xx_osmr0.shift);
	ckevt_tcc88xx_osmr0.max_delta_ns =
		clockevent_delta2ns(0x7fffffff, &ckevt_tcc88xx_osmr0);
	ckevt_tcc88xx_osmr0.min_delta_ns =
		clockevent_delta2ns(4, &ckevt_tcc88xx_osmr0) + 1;
	ckevt_tcc88xx_osmr0.cpumask = cpumask_of(0);

	cksrc_tcc88xx_oscr.mult =
		clocksource_hz2mult(CLOCK_TICK_RATE, cksrc_tcc88xx_oscr.shift);

	BITSET(pPIC->SEL0, TCC_ENABLE_BIT(INT_TC32));
	BITSET(pPIC->IEN0, TCC_ENABLE_BIT(INT_TC32));
	BITSET(pPIC->INTMSK0, TCC_ENABLE_BIT(INT_TC32));
	BITSET(pPIC->MODEA0, TCC_ENABLE_BIT(INT_TC32));

	setup_irq(INT_TC32, &tcc88xx_timer_irq);

	clocksource_register(&cksrc_tcc88xx_oscr);
	clockevents_register_device(&ckevt_tcc88xx_osmr0);

	/*
	 * Set scale and timer for sched_clock
	 */
	setup_sched_clock(CLOCK_TICK_RATE);

	clock_valid = 1;
}
开发者ID:AmesianX，项目名称:telechips-linux，代码行数:42，代码来源:time.c


示例13: orion_time_init

void __init
orion_time_init(u32 _bridge_base, u32 _bridge_timer1_clr_mask,
		unsigned int irq, unsigned int tclk)
{
	u32 u;

	/*
                          
  */
	bridge_base = (void __iomem *)_bridge_base;
	bridge_timer1_clr_mask = _bridge_timer1_clr_mask;

	ticks_per_jiffy = (tclk + HZ/2) / HZ;

	/*
                                        
  */
	setup_sched_clock(orion_read_sched_clock, 32, tclk);

	/*
                                                    
              
  */
	writel(0xffffffff, timer_base + TIMER0_VAL_OFF);
	writel(0xffffffff, timer_base + TIMER0_RELOAD_OFF);
	u = readl(bridge_base + BRIDGE_MASK_OFF);
	writel(u & ~BRIDGE_INT_TIMER0, bridge_base + BRIDGE_MASK_OFF);
	u = readl(timer_base + TIMER_CTRL_OFF);
	writel(u | TIMER0_EN | TIMER0_RELOAD_EN, timer_base + TIMER_CTRL_OFF);
	clocksource_mmio_init(timer_base + TIMER0_VAL_OFF, "orion_clocksource",
		tclk, 300, 32, clocksource_mmio_readl_down);

	/*
                                              
  */
	setup_irq(irq, &orion_timer_irq);
	orion_clkevt.mult = div_sc(tclk, NSEC_PER_SEC, orion_clkevt.shift);
	orion_clkevt.max_delta_ns = clockevent_delta2ns(0xfffffffe, &orion_clkevt);
	orion_clkevt.min_delta_ns = clockevent_delta2ns(1, &orion_clkevt);
	orion_clkevt.cpumask = cpumask_of(0);
	clockevents_register_device(&orion_clkevt);
}
开发者ID:romanbb，项目名称:android_kernel_lge_d851，代码行数:42，代码来源:time.c


示例14: s3c64xx_clock_event_init

static void __init s3c64xx_clock_event_init(void)
{
	unsigned long clock_rate;

	clock_rate = clk_get_rate(event_in);

	clock_count_per_tick = clock_rate / HZ;

	s3c64xx_clock_event_device.mult = div_sc(clock_rate,
			NSEC_PER_SEC, s3c64xx_clock_event_device.shift);
	s3c64xx_clock_event_device.max_delta_ns =
			clockevent_delta2ns(-1, &s3c64xx_clock_event_device);
	s3c64xx_clock_event_device.min_delta_ns =
			clockevent_delta2ns(1, &s3c64xx_clock_event_device);

	s3c64xx_clock_event_device.cpumask = cpumask_of(0);
	clockevents_register_device(&s3c64xx_clock_event_device);

	setup_irq(IRQ_TIMER3, &s3c64xx_clock_event_irq);
}
开发者ID:qnhoang81，项目名称:spica-3.0，代码行数:20，代码来源:time.c


示例15: sa1100_timer_init

static void __init sa1100_timer_init(void)
{
    OIER = 0;		/* disable any timer interrupts */
    OSSR = 0xf;		/* clear status on all timers */

    ckevt_sa1100_osmr0.mult =
        div_sc(3686400, NSEC_PER_SEC, ckevt_sa1100_osmr0.shift);
    ckevt_sa1100_osmr0.max_delta_ns =
        clockevent_delta2ns(0x7fffffff, &ckevt_sa1100_osmr0);
    ckevt_sa1100_osmr0.min_delta_ns =
        clockevent_delta2ns(MIN_OSCR_DELTA * 2, &ckevt_sa1100_osmr0) + 1;

    cksrc_sa1100_oscr.mult =
        clocksource_hz2mult(CLOCK_TICK_RATE, cksrc_sa1100_oscr.shift);

    setup_irq(IRQ_OST0, &sa1100_timer_irq);

    clocksource_register(&cksrc_sa1100_oscr);
    clockevents_register_device(&ckevt_sa1100_osmr0);
}
开发者ID:liuyang201666，项目名称:linux-akae，代码行数:20，代码来源:time.c


示例16: tcc_clockevent_init

static int __init tcc_clockevent_init(struct clk *clock)
{
	unsigned int c = clk_get_rate(clock);

	clocksource_mmio_init(timer_base + TC32MCNT_OFFS, "tcc_tc32", c,
		200, 32, clocksource_mmio_readl_up);

	clockevent_tcc.mult = div_sc(c, NSEC_PER_SEC,
					clockevent_tcc.shift);
	clockevent_tcc.max_delta_ns =
			clockevent_delta2ns(0xfffffffe, &clockevent_tcc);
	clockevent_tcc.min_delta_ns =
			clockevent_delta2ns(0xff, &clockevent_tcc);

	clockevent_tcc.cpumask = cpumask_of(0);

	clockevents_register_device(&clockevent_tcc);

	return 0;
}
开发者ID:007kumarraja，项目名称:rockchip-rk3188-mk908，代码行数:20，代码来源:time.c


示例17: pxa_timer_init

static void __init pxa_timer_init(void)
{
	OIER = 0;
	OSSR = OSSR_M0 | OSSR_M1 | OSSR_M2 | OSSR_M3;

	ckevt_pxa_osmr0.mult =
		div_sc(CLOCK_TICK_RATE, NSEC_PER_SEC, ckevt_pxa_osmr0.shift);
	ckevt_pxa_osmr0.max_delta_ns =
		clockevent_delta2ns(0x7fffffff, &ckevt_pxa_osmr0);
	ckevt_pxa_osmr0.min_delta_ns =
		clockevent_delta2ns(MIN_OSCR_DELTA, &ckevt_pxa_osmr0) + 1;

	cksrc_pxa_oscr0.mult =
		clocksource_hz2mult(CLOCK_TICK_RATE, cksrc_pxa_oscr0.shift);

	setup_irq(IRQ_OST0, &pxa_ost0_irq);

	clocksource_register(&cksrc_pxa_oscr0);
	clockevents_register_device(&ckevt_pxa_osmr0);
}
开发者ID:D-Land，项目名称:operating-systems，代码行数:20，代码来源:time.c


示例18: mxc_clockevent_init

static int __init mxc_clockevent_init(struct clk *timer_clk)
{
	unsigned int c = clk_get_rate(timer_clk);

	if (timer_is_v2())
		clockevent_mxc.set_next_event = v2_set_next_event;

	clockevent_mxc.mult = div_sc(c, NSEC_PER_SEC,
					clockevent_mxc.shift);
	clockevent_mxc.max_delta_ns =
			clockevent_delta2ns(0xfffffffe, &clockevent_mxc);
	clockevent_mxc.min_delta_ns =
			clockevent_delta2ns(0xff, &clockevent_mxc);

	clockevent_mxc.cpumask = cpumask_of(0);

	clockevents_register_device(&clockevent_mxc);

	return 0;
}
开发者ID:Alexander1307，项目名称:linux-2.6.35.3-imx28，代码行数:20，代码来源:time.c


示例19: twd_timer_setup

/*
 * Setup the local clock events for a CPU.
 */
void __cpuinit twd_timer_setup(struct clock_event_device *clk)
{
	twd_calibrate_rate();

	clk->name = "local_timer";
	clk->features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT |
			CLOCK_EVT_FEAT_C3STOP;
	clk->rating = 350;
	clk->set_mode = twd_set_mode;
	clk->set_next_event = twd_set_next_event;
	clk->shift = 20;
	clk->mult = div_sc(twd_timer_rate, NSEC_PER_SEC, clk->shift);
	clk->max_delta_ns = clockevent_delta2ns(0xffffffff, clk);
	clk->min_delta_ns = clockevent_delta2ns(0xf, clk);

	/* Make sure our local interrupt controller has this enabled */
	gic_enable_ppi(clk->irq);

	clockevents_register_device(clk);
}
开发者ID:0ll9，项目名称:XT890-Kernel-Gamma，代码行数:23，代码来源:smp_twd.c


示例20: mv_init_timer

static void mv_init_timer(void)
{
	/*
	 * Setup clocksource free running timer (no interrupt on reload)
	 */
 	MV_REG_WRITE(CNTMR_VAL_REG(CLOCKSOURCE), 0xffffffff);
	MV_REG_WRITE(CNTMR_RELOAD_REG(CLOCKSOURCE), 0xffffffff);
	MV_REG_BIT_RESET(BRIDGE_INT_MASK_REG, BRIDGE_INT_TIMER(CLOCKSOURCE));
	MV_REG_BIT_SET(CNTMR_CTRL_REG, TIMER_RELOAD_EN(CLOCKSOURCE) |
				  TIMER_EN(CLOCKSOURCE));

	kw_clkevt.cpumask = cpumask_of(0);

	/*
	 * Register clocksource
	 */
	kw_clksrc.mult =
		clocksource_hz2mult(mvBoardTclkGet(), kw_clksrc.shift);

	clocksource_register(&kw_clksrc);

	/*
	 * Connect and enable tick handler
	 */
	setup_irq(IRQ_BRIDGE, &kw_timer_irq);

	/*
	 * Register clockevent
	 */
	kw_clkevt.mult =
		div_sc(mvBoardTclkGet(), NSEC_PER_SEC, kw_clkevt.shift);
	kw_clkevt.max_delta_ns =
		clockevent_delta2ns(0xfffffffe, &kw_clkevt);
	kw_clkevt.min_delta_ns =
		clockevent_delta2ns(1, &kw_clkevt);

	/*
	 * Setup clockevent timer (interrupt-driven.)
	 */
	clockevents_register_device(&kw_clkevt);
}
开发者ID:KevinCabana，项目名称:xpenology，代码行数:41，代码来源:time.c



注：本文中的div_sc函数示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。

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