serial: Add OMAP high-speed UART driver

This patch adds driver support for OMAP2/3/4 high speed UART.

The driver is made separate from 8250 driver as we cannot
over load 8250 driver with omap platform specific configuration for
features like DMA, it makes easier to implement features like DMA and
hardware flow control and software flow control configuration with
this driver as required for the omap-platform.
This patch involves only the core driver and its dependent.

Cc: Tony Lindgren <tony@atomide.com>
Signed-off-by: Govindraj.R <govindraj.raja@ti.com>
Acked-by: Alan Cox <alan@linux.intel.com>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

1 files changed, 27 insertions, 0 deletions

diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index 12900f7083b0..8d8b975ce784 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -1416,6 +1416,33 @@ config SERIAL_OF_PLATFORM
           Currently, only 8250 compatible ports are supported, but
           others can easily be added.
 
+config SERIAL_OMAP
+        tristate "OMAP serial port support"
+        depends on ARCH_OMAP2 || ARCH_OMAP3 || ARCH_OMAP4
+        select SERIAL_CORE
+        help
+          If you have a machine based on an Texas Instruments OMAP CPU you
+          can enable its onboard serial ports by enabling this option.
+
+          By enabling this option you take advantage of dma feature available
+          with the omap-serial driver. DMA support can be enabled from platform
+          data.
+
+config SERIAL_OMAP_CONSOLE
+        bool "Console on OMAP serial port"
+        depends on SERIAL_OMAP
+        select SERIAL_CORE_CONSOLE
+        help
+          Select this option if you would like to use omap serial port as
+          console.
+
+          Even if you say Y here, the currently visible virtual console
+          (/dev/tty0) will still be used as the system console by default, but
+          you can alter that using a kernel command line option such as
+          "console=ttyOx". (Try "man bootparam" or see the documentation of
+          your boot loader about how to pass options to the kernel at
+          boot time.)
+
 config SERIAL_OF_PLATFORM_NWPSERIAL
         tristate "NWP serial port driver"
         depends on PPC_OF && PPC_DCR