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authorAndres Salomon <dilinger@collabora.co.uk>2009-12-14 18:00:38 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-12-15 08:53:28 -0800
commitc30d7d2b9987e189bc6d5ec6635785b91a6ee81e (patch)
tree521d7185b8612fa6bd9589923d8da5884cc2e53e /drivers/clocksource/Kconfig
parent82dca611bb516ec5fb7d04077733d6a4b70f52d1 (diff)
cs5535: add a generic clock event MFGPT driver
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>
Diffstat (limited to 'drivers/clocksource/Kconfig')
-rw-r--r--drivers/clocksource/Kconfig9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig
new file mode 100644
index 00000000000..08f726c5fee
--- /dev/null
+++ b/drivers/clocksource/Kconfig
@@ -0,0 +1,9 @@
+config CS5535_CLOCK_EVENT_SRC
+ tristate "CS5535/CS5536 high-res timer (MFGPT) events"
+ depends on GENERIC_TIME && GENERIC_CLOCKEVENTS && CS5535_MFGPT
+ help
+ This driver provides a clock event source based on the MFGPT
+ timer(s) in the CS5535 and CS5536 companion chips.
+ MFGPTs have a better resolution and max interval than the
+ generic PIT, and are suitable for use as high-res timers.
+