UIO: add PRUSS UIO driver support

This patch implements PRUSS (Programmable Real-time Unit Sub System)
UIO driver which exports SOC resources associated with PRUSS like
I/O, memories and IRQs to user space. PRUSS is dual 32-bit RISC
processors which is efficient in performing embedded tasks that
require manipulation of packed memory mapped data structures and
handling system events that have tight real time constraints. This
driver is currently supported on Texas Instruments DA850, AM18xx and
OMAP-L138 devices.
For example, PRUSS runs firmware for real-time critical industrial
communication data link layer and communicates with application stack
running in user space via shared memory and IRQs.

Signed-off-by: Pratheesh Gangadhar <pratheesh@ti.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Hans J. Koch <hjk@hansjkoch.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 17 insertions, 0 deletions

diff --git a/drivers/uio/Kconfig b/drivers/uio/Kconfig
index bb440792a1b7..6f3ea9bbc818 100644
--- a/drivers/uio/Kconfig
+++ b/drivers/uio/Kconfig
@@ -94,4 +94,21 @@ config UIO_NETX
           To compile this driver as a module, choose M here; the module
           will be called uio_netx.
 
+config UIO_PRUSS
+        tristate "Texas Instruments PRUSS driver"
+        depends on ARCH_DAVINCI_DA850
+        help
+          PRUSS driver for OMAPL138/DA850/AM18XX devices
+          PRUSS driver requires user space components, examples and user space
+          driver is available from below SVN repo - you may use anonymous login
+
+          https://gforge.ti.com/gf/project/pru_sw/
+
+          More info on API is available at below wiki
+
+          http://processors.wiki.ti.com/index.php/PRU_Linux_Application_Loader
+
+          To compile this driver as a module, choose M here: the module
+          will be called uio_pruss.
+
 endif