[PATCH] Framebuffer driver for Arc LCD board

Add support for the Arc monochrome LCD board.

The board uses KS108 controllers to drive individual 64x64 LCD matrices.
The board can be paneled in a variety of setups such as 2x1=128x64,
4x4=256x256 and so on.  The board/host interface is through GPIO.

Signed-off-by: Jaya Kumar <jayalk@intworks.biz>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Cc: <linux-fbdev-devel@lists.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

CREDITS

@@ -1880,6 +1880,13 @@ S: Schlehenweg 9
 S: D-91080 Uttenreuth
 S: Germany
 
+N: Jaya Kumar
+E: jayalk@intworks.biz
+W: http://www.intworks.biz
+D: Arc monochrome LCD framebuffer driver, x86 reboot fixups
+S: Gurgaon, India
+S: Kuala Lumpur, Malaysia
+
 N: Gabor Kuti
 M: seasons@falcon.sch.bme.hu
 M: seasons@makosteszta.sote.hu

MAINTAINERS

@@ -265,6 +265,11 @@ P:	Arnaldo Carvalho de Melo
 M:	acme@conectiva.com.br
 S:	Maintained
 
+ARC FRAMEBUFFER DRIVER
+P:	Jaya Kumar
+M:	jayalk@intworks.biz
+S:	Maintained
+
 ARM26 ARCHITECTURE
 P:	Ian Molton
 M:	spyro@f2s.com

drivers/video/Kconfig

@@ -322,6 +322,22 @@ config FB_FM2
 	  This is the frame buffer device driver for the Amiga FrameMaster
 	  card from BSC (exhibited 1992 but not shipped as a CBM product).
 
+config FB_ARC
+	tristate "Arc Monochrome LCD board support"
+	depends on FB && X86
+	select FB_CFB_FILLRECT
+	select FB_CFB_COPYAREA
+	select FB_CFB_IMAGEBLIT
+	select FB_SOFT_CURSOR
+	help
+	  This enables support for the Arc Monochrome LCD board. The board
+	  is based on the KS-108 lcd controller and is typically a matrix
+	  of 2*n chips. This driver was tested with a 128x64 panel. This
+	  driver supports it for use with x86 SBCs through a 16 bit GPIO
+	  interface (8 bit data, 8 bit control). If you anticpate using
+	  this driver, say Y or M; otherwise say N. You must specify the
+	  GPIO IO address to be used for setting control and data.
+
 config FB_ATARI
 	bool "Atari native chipset support"
 	depends on (FB = y) && ATARI && BROKEN

drivers/video/Makefile

@@ -21,6 +21,7 @@ obj-$(CONFIG_FB_MACMODES)      += macmodes.o
 # Hardware specific drivers go first
 obj-$(CONFIG_FB_RETINAZ3)         += retz3fb.o
 obj-$(CONFIG_FB_AMIGA)            += amifb.o c2p.o
+obj-$(CONFIG_FB_ARC)              += arcfb.o
 obj-$(CONFIG_FB_CLPS711X)         += clps711xfb.o
 obj-$(CONFIG_FB_CYBER)            += cyberfb.o
 obj-$(CONFIG_FB_CYBER2000)        += cyber2000fb.o

include/linux/arcfb.h

@@ -0,0 +1,8 @@
+#ifndef __LINUX_ARCFB_H__
+#define __LINUX_ARCFB_H__
+
+#define FBIO_WAITEVENT		_IO('F', 0x88)
+#define FBIO_GETCONTROL2	_IOR('F', 0x89, size_t)
+
+#endif
+