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author | Rob Herring <rob.herring@calxeda.com> | 2013-04-10 18:27:51 -0500 |
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committer | Rob Herring <rob.herring@calxeda.com> | 2013-04-11 15:11:15 -0500 |
commit | 0583fe478a7d93be2c814b7e50d6e81c287edfe8 (patch) | |
tree | 1fedae32e915a0caf60fa20be32824a67262cf99 /arch/arm/kernel | |
parent | f414f13f2fd0d8bb12a87268a55827cda771d42b (diff) | |
download | op-kernel-dev-0583fe478a7d93be2c814b7e50d6e81c287edfe8.zip op-kernel-dev-0583fe478a7d93be2c814b7e50d6e81c287edfe8.tar.gz |
ARM: convert arm/arm64 arch timer to use CLKSRC_OF init
This converts arm and arm64 to use CLKSRC_OF DT based initialization for
the arch timer. A new function arch_timer_arch_init is added to allow for
arch specific setup.
This has a side effect of enabling sched_clock on omap5 and exynos5. There
should not be any reason not to use the arch timers for sched_clock.
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Simon Horman <horms@verge.net.au>
Cc: Magnus Damm <magnus.damm@gmail.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-samsung-soc@vger.kernel.org
Cc: linux-omap@vger.kernel.org
Cc: linux-sh@vger.kernel.org
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Diffstat (limited to 'arch/arm/kernel')
-rw-r--r-- | arch/arm/kernel/arch_timer.c | 17 |
1 files changed, 3 insertions, 14 deletions
diff --git a/arch/arm/kernel/arch_timer.c b/arch/arm/kernel/arch_timer.c index 80c458f..59dcdce 100644 --- a/arch/arm/kernel/arch_timer.c +++ b/arch/arm/kernel/arch_timer.c @@ -39,26 +39,15 @@ static void __init arch_timer_delay_timer_register(void) register_current_timer_delay(&arch_delay_timer); } -int __init arch_timer_of_register(void) -{ - int ret; - - ret = arch_timer_init(); - if (ret) - return ret; - - arch_timer_delay_timer_register(); - - return 0; -} - -int __init arch_timer_sched_clock_init(void) +int __init arch_timer_arch_init(void) { u32 arch_timer_rate = arch_timer_get_rate(); if (arch_timer_rate == 0) return -ENXIO; + arch_timer_delay_timer_register(); + /* Cache the sched_clock multiplier to save a divide in the hot path. */ sched_clock_mult = NSEC_PER_SEC / arch_timer_rate; sched_clock_func = arch_timer_sched_clock; |