hwspinlock/u8500: add hwspinlock driver

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>

1 files changed, 11 insertions, 0 deletions

diff --git a/drivers/hwspinlock/Kconfig b/drivers/hwspinlock/Kconfig
index c8e7bdac1404..c7c3128393d1 100644
--- a/drivers/hwspinlock/Kconfig
+++ b/drivers/hwspinlock/Kconfig
@@ -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