drivers: hwspinlock: add framework
Add a platform-independent hwspinlock framework.
Hardware spinlock devices are needed, e.g., in order to access data
that is shared between remote processors, that otherwise have no
alternative mechanism to accomplish synchronization and mutual exclusion
operations.
Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
Cc: Hari Kanigeri <h-kanigeri2@ti.com>
Cc: Benoit Cousson <b-cousson@ti.com>
Cc: Kevin Hilman <khilman@ti.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Paul Walmsley <paul@pwsan.com>
Cc: Russell King <linux@arm.linux.org.uk>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Tony Lindgren <tony@atomide.com>
diff --git a/drivers/Makefile b/drivers/Makefile
index b423bb1..3f135b6 100644
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -117,3 +117,5 @@
obj-y += ieee802154/
#common clk code
obj-y += clk/
+
+obj-$(CONFIG_HWSPINLOCK) += hwspinlock/