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* hwspinlock: depend on OMAP4Ohad Ben-Cohen2011-03-18
| | | | | | | | Currently only OMAP4 supports hwspinlocks, so don't bother asking anyone else. Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* drivers: hwspinlock: add OMAP implementationSimon Que2011-02-17
| | | | | | | | | | | | | | | | | | | | | Add hwspinlock support for the OMAP4 Hardware Spinlock device. The Hardware Spinlock device on OMAP4 provides hardware assistance for synchronization between the multiple processors in the system (dual Cortex-A9, dual Cortex-M3 and a C64x+ DSP). [ohad@wizery.com: adapt to hwspinlock framework, tidy up] Signed-off-by: Simon Que <sque@ti.com> Signed-off-by: Hari Kanigeri <h-kanigeri2@ti.com> Signed-off-by: Krishnamoorthy, Balaji T <balajitk@ti.com> Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Cc: Benoit Cousson <b-cousson@ti.com> Cc: Kevin Hilman <khilman@ti.com> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Paul Walmsley <paul@pwsan.com> Cc: Russell King <linux@arm.linux.org.uk> Signed-off-by: Tony Lindgren <tony@atomide.com>
* drivers: hwspinlock: add frameworkOhad Ben-Cohen2011-02-17
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>