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This is based on the old code in arch/x86/kernel/mfgpt_32.c, but is modular and not Geode-specific. There's no reason why the clock event device needs to be registered so early at boot; the clockevent code is perfectly capable of dynamic switching. [akpm@linux-foundation.org: add linux/irq.h include] Signed-off-by: Andres Salomon <dilinger@collabora.co.uk> Cc: Jordan Crouse <jordan@cosmicpenguin.net> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: john stultz <johnstul@us.ibm.com> Cc: Chris Ball <cjb@laptop.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 lines
397 B
Plaintext
10 lines
397 B
Plaintext
config CS5535_CLOCK_EVENT_SRC
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tristate "CS5535/CS5536 high-res timer (MFGPT) events"
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depends on GENERIC_TIME && GENERIC_CLOCKEVENTS && CS5535_MFGPT
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help
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This driver provides a clock event source based on the MFGPT
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timer(s) in the CS5535 and CS5536 companion chips.
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MFGPTs have a better resolution and max interval than the
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generic PIT, and are suitable for use as high-res timers.
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