xen pvfb: Para-virtual framebuffer, keyboard and pointer driver

This is a pair of Xen para-virtual frontend device drivers:
drivers/video/xen-fbfront.c provides a framebuffer, and
drivers/input/xen-kbdfront provides keyboard and mouse.

The backends run in dom0 user space.

The two drivers are not in two separate patches, because the
intermediate step (one driver, not the other) is somewhat problematic:
the backend in dom0 needs both drivers, and will refuse to complete
device initialization unless they're both present.

Signed-off-by: Markus Armbruster <armbru@redhat.com>

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 14 insertions, 0 deletions

diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index 1bd5fb30237d..e3dc8f8d0c3e 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -1930,6 +1930,20 @@ config FB_VIRTUAL
 
           If unsure, say N.
 
+config XEN_FBDEV_FRONTEND
+        tristate "Xen virtual frame buffer support"
+        depends on FB && XEN
+        select FB_SYS_FILLRECT
+        select FB_SYS_COPYAREA
+        select FB_SYS_IMAGEBLIT
+        select FB_SYS_FOPS
+        select FB_DEFERRED_IO
+        default y
+        help
+          This driver implements the front-end of the Xen virtual
+          frame buffer driver.  It communicates with a back-end
+          in another domain.
+
 source "drivers/video/omap/Kconfig"
 
 source "drivers/video/backlight/Kconfig"