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hwspinlock/u8500: add hwspinlock driver

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Add hwspinlock driver for U8500's Hsem hardware.

At this point only HSem's protocol 1 is used (i.e. no interrupts).

Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
[ohad@wizery.com: adopt recent hwspin_lock_{un}register API changes]
[ohad@wizery.com: set the owner member of the driver]
[ohad@wizery.com: mark ->remove() function as __devexit]
[ohad@wizery.com: write commit log]
[ohad@wizery.com: small cleanups]
Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
This commit is contained in:
Mathieu J. Poirier
2011-09-08 22:47:40 +03:00
committed by Ohad Ben-Cohen
parent 300bab9770
commit f84a8ecfca
3 changed files with 210 additions and 0 deletions
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drivers/hwspinlock/Kconfig
+11
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@@ -18,4 +18,15 @@ config HWSPINLOCK_OMAP
If unsure, say N.
config HSEM_U8500
tristate "STE Hardware Semaphore functionality"
depends on ARCH_U8500
select HWSPINLOCK
help
Say y here to support the STE Hardware Semaphore functionality, which
provides a synchronisation mechanism for the various processor on the
SoC.
If unsure, say N.
endmenu