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2012-11-28ARM: 7586/1: sp804: set cpumask to cpu_possible_mask for clock event deviceWill Deacon1-1/+1
The SP804 driver statically initialises the cpumask of the clock event device to be cpu_all_mask, which is derived from the compile-time constant NR_CPUS. This breaks SMP_ON_UP systems where the interrupt controller handling the sp804 doesn't have the irq_set_affinity callback on the irq_chip, because the common timer code fails to identify the device as cpu-local and ends up treating it as a broadcast device instead. This patch fixes the problem by using cpu_possible_mask at runtime, which will correctly represent the possible CPUs when SMP_ON_UP is being used. Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-02-09ARM: timer-sp: add sched_clock supportRob Herring1-1/+16
Add a sched_clock support for the sp804 timer. The clocksource timer can optionally initialize itself as sched_clock timer. Signed-off-by: Rob Herring <rob.herring@calxeda.com>
2011-12-23ARM: 7243/1: sp804: modernize clock event registrationLinus Walleij1-6/+1
This removes the hardcoded shift value and lets the clockevent core come up with suitable mult and div factors. Tested on the Integrator/CP. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-09-27clk: timer-sp: convert to clk_prepare()/clk_unprepare()Russell King1-0/+9
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-05-23clockevents: ARM sp804: obtain sp804 timer rate via clksRussell King1-8/+8
This allows platforms to specify the rate of the SP804 clockevent via the clk subsystem. While ARM boards clock these at 1MHz, BCMRing also has SP804 timers but are clocked at different rates. Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-05-23clockevents: ARM sp804: allow clockevent name to be specifiedRussell King1-4/+5
This allows platforms to specify the clcokevent name upon registration. Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-05-23clocksource: ARM sp804: obtain sp804 timer rate via clksRussell King1-1/+38
This allows platforms to specify the rate of the SP804 clocksource via the clk subsystem. While ARM boards clock these at 1MHz, BCMRing also has SP804 timers but are clocked at different rates. Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-05-23clocksource: ARM sp804: allow clocksource name to be specifiedRussell King1-2/+2
This allows platforms to specify the clocksource name upon registration, which is necessary should they wish to register more than one sp804 clocksource. Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-05-23clocksource: convert ARM 32-bit down counting clocksourcesRussell King1-24/+6
Convert SP804, MXC, Nomadik and Orion 32-bit down-counting clocksources to generic mmio clocksource infrastructure. Acked-by: Catalin Marinas <catalin.marinas@arm.com> Cc: Sascha Hauer <kernel@pengutronix.de> Cc: Alessandro Rubini <rubini@unipv.it> Acked-by: Linus Walleij <linus.walleij@linaro.org> Cc: Lennert Buytenhek <kernel@wantstofly.org> Acked-by: Nicolas Pitre <nico@fluxnic.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-01-05Merge branch 'clksrc' into develRussell King1-3/+1
Conflicts: arch/arm/mach-vexpress/v2m.c arch/arm/plat-omap/counter_32k.c arch/arm/plat-versatile/Makefile
2010-11-04ARM: 6432/1: move timer-sp.c from versatile to commonRob Herring1-0/+154
From: Rob Herring <rob.herring@smooth-stone.com> The timer-sp h/w used on versatile platforms can also be used for other platforms, so move it to a common location. Signed-off-by: Rob Herring <rob.herring@smooth-stone.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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