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Merge branch 'clockevents/fixes' of git://git.linaro.org/people/dlezcano/linux into timers/urgent 

* Hide event stream Kconfig option for the arch_arm_timer for ARM=n
 * Fix a missing a clk_put in case the registering of the sh_mtu[2] drivers fails.
 * Reuse clockevents_config_and_register for the at91rm9200_time timer
This commit is contained in:
Thomas Gleixner 2013-11-26 19:00:32 +01:00
parent 4be77398ac 77f7ce9a9f
commit 70fe8217e1
4 changed files with 34 additions and 10 deletions
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7
arch/arm/mach-at91/at91rm9200_time.c
View File

@ -174,7 +174,6 @@ clkevt32k_next_event(unsigned long delta, struct clock_event_device *dev)
static struct clock_event_device clkevt = {
.name = "at91_tick",
.features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
.shift = 32,
.rating = 150,
.set_next_event = clkevt32k_next_event,
.set_mode = clkevt32k_mode,
@ -265,11 +264,9 @@ void __init at91rm9200_timer_init(void)
at91_st_write(AT91_ST_RTMR, 1);
/* Setup timer clockevent, with minimum of two ticks (important!!) */
clkevt.mult = div_sc(AT91_SLOW_CLOCK, NSEC_PER_SEC, clkevt.shift);
clkevt.max_delta_ns = clockevent_delta2ns(AT91_ST_ALMV, &clkevt);
clkevt.min_delta_ns = clockevent_delta2ns(2, &clkevt) + 1;
clkevt.cpumask = cpumask_of(0);
clockevents_register_device(&clkevt);
clockevents_config_and_register(&clkevt, AT91_SLOW_CLOCK,
2, AT91_ST_ALMV);
/* register clocksource */
clocksource_register_hz(&clk32k, AT91_SLOW_CLOCK);

1
drivers/clocksource/Kconfig
View File

@ -87,6 +87,7 @@ config ARM_ARCH_TIMER
config ARM_ARCH_TIMER_EVTSTREAM
bool "Support for ARM architected timer event stream generation"
default y if ARM_ARCH_TIMER
depends on ARM_ARCH_TIMER
help
This option enables support for event stream generation based on
the ARM architected timer. It is used for waking up CPUs executing

16
drivers/clocksource/sh_mtu2.c
View File

@ -313,8 +313,20 @@ static int sh_mtu2_setup(struct sh_mtu2_priv *p, struct platform_device *pdev)
goto err1;
}
return sh_mtu2_register(p, (char *)dev_name(&p->pdev->dev),
cfg->clockevent_rating);
ret = clk_prepare(p->clk);
if (ret < 0)
goto err2;
ret = sh_mtu2_register(p, (char *)dev_name(&p->pdev->dev),
cfg->clockevent_rating);
if (ret < 0)
goto err3;
return 0;
err3:
clk_unprepare(p->clk);
err2:
clk_put(p->clk);
err1:
iounmap(p->mapbase);
err0:

20
drivers/clocksource/sh_tmu.c
View File

@ -472,12 +472,26 @@ static int sh_tmu_setup(struct sh_tmu_priv *p, struct platform_device *pdev)
ret = PTR_ERR(p->clk);
goto err1;
}
ret = clk_prepare(p->clk);
if (ret < 0)
goto err2;
p->cs_enabled = false;
p->enable_count = 0;
return sh_tmu_register(p, (char *)dev_name(&p->pdev->dev),
cfg->clockevent_rating,
cfg->clocksource_rating);
ret = sh_tmu_register(p, (char *)dev_name(&p->pdev->dev),
cfg->clockevent_rating,
cfg->clocksource_rating);
if (ret < 0)
goto err3;
return 0;
err3:
clk_unprepare(p->clk);
err2:
clk_put(p->clk);
err1:
iounmap(p->mapbase);
err0: