[PATCH] serial uartlite driver

Add a driver for the Xilinx uartlite serial controller used in boards with
the PPC405 core in the Xilinx V2P/V4 fpgas.

The hardware is very simple (baudrate/start/stopbits fixed and no break
support).  See the datasheet for details:

	http://www.xilinx.com/bvdocs/ipcenter/data_sheet/opb_uartlite.pdf

See http://thread.gmane.org/gmane.linux.serial/1237/ for the email thread.

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Acked-by: Olof Johansson <olof@lixom.net>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 19 insertions, 0 deletions

diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index 0b71e7d18903..e936c91640b4 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -511,6 +511,25 @@ config SERIAL_IMX_CONSOLE
           your boot loader (lilo or loadlin) about how to pass options to the
           kernel at boot time.)
 
+config SERIAL_UARTLITE
+        tristate "Xilinx uartlite serial port support"
+        depends on PPC32
+        select SERIAL_CORE
+        help
+          Say Y here if you want to use the Xilinx uartlite serial controller.
+
+          To compile this driver as a module, choose M here: the
+          module will be called uartlite.ko.
+
+config SERIAL_UARTLITE_CONSOLE
+        bool "Support for console on Xilinx uartlite serial port"
+        depends on SERIAL_UARTLITE=y
+        select SERIAL_CORE_CONSOLE
+        help
+          Say Y here if you wish to use a Xilinx uartlite as the system
+          console (the system console is the device which receives all kernel
+          messages and warnings and which allows logins in single user mode).
+
 config SERIAL_SUNCORE
         bool
         depends on SPARC