From mboxrd@z Thu Jan 1 00:00:00 1970 From: robherring2@gmail.com (Rob Herring) Date: Thu, 30 Sep 2010 17:49:12 -0500 Subject: [PATCH 3/3] ARM: twd_smp: add clock api support In-Reply-To: <1285886952-30888-1-git-send-email-robherring2@gmail.com> References: <1285886952-30888-1-git-send-email-robherring2@gmail.com> Message-ID: <1285886952-30888-3-git-send-email-robherring2@gmail.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org From: Rob Herring The private timer freq is currently dynamically detected using jiffies count to determine the rate. This method adds a delay to boot-up, so use the clock api instead to get the clock rate. Signed-off-by: Rob Herring --- arch/arm/include/asm/smp_twd.h | 2 ++ arch/arm/kernel/smp_twd.c | 7 +++++++ 2 files changed, 9 insertions(+), 0 deletions(-) diff --git a/arch/arm/include/asm/smp_twd.h b/arch/arm/include/asm/smp_twd.h index 634f357..bafad52 100644 --- a/arch/arm/include/asm/smp_twd.h +++ b/arch/arm/include/asm/smp_twd.h @@ -19,11 +19,13 @@ #define TWD_TIMER_CONTROL_IT_ENABLE (1 << 2) struct clock_event_device; +struct clk; extern void __iomem *twd_base; void twd_timer_stop(void); int twd_timer_ack(void); void twd_timer_setup(struct clock_event_device *); +void twd_timer_init(void __iomem *base, struct clk *clk); #endif diff --git a/arch/arm/kernel/smp_twd.c b/arch/arm/kernel/smp_twd.c index 35882fb..1a3c959 100644 --- a/arch/arm/kernel/smp_twd.c +++ b/arch/arm/kernel/smp_twd.c @@ -17,6 +17,7 @@ #include #include #include +#include #include #include @@ -151,6 +152,12 @@ void __cpuinit twd_timer_setup(struct clock_event_device *clk) clockevents_register_device(clk); } +void __init twd_timer_init(void __iomem *base, struct clk *clk) +{ + twd_base = base; + twd_timer_rate = clk_get_rate(clk); +} + #ifdef CONFIG_HOTPLUG_CPU /* * take a local timer down -- 1.7.0.4