staging: Add framebuffer driver for XGI chipsets

This driver handles XG20, XG21, XG40, XG42 chipsets from XGI. They're
also known as Z7,Z9,Z11 chipsets. It's based on the SiS fb driver but
has been heavily modified by XGI to support their newer chipsets.


Signed-off-by: Arnaud Patard <apatard@mandriva.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/Kconfig

@@ -141,5 +141,7 @@ source "drivers/staging/ti-st/Kconfig"
 
 source "drivers/staging/adis16255/Kconfig"
 
+source "drivers/staging/xgifb/Kconfig"
+
 endif # !STAGING_EXCLUDE_BUILD
 endif # STAGING

drivers/staging/Makefile

@@ -51,3 +51,4 @@ obj-$(CONFIG_CRYSTALHD)		+= crystalhd/
 obj-$(CONFIG_CXT1E1)		+= cxt1e1/
 obj-$(CONFIG_TI_ST)		+= ti-st/
 obj-$(CONFIG_ADIS16255)		+= adis16255/
+obj-$(CONFIG_FB_XGI)		+= xgifb/

drivers/staging/xgifb/Kconfig

@@ -0,0 +1,11 @@
+config FB_XGI
+	tristate "XGI display support"
+	depends on FB && PCI
+	select FB_CFB_FILLRECT
+	select FB_CFB_COPYAREA
+	select FB_CFB_IMAGEBLIT
+	help
+	  This driver supports notebooks with XGI Z7,Z9,Z11 PCI chips.
+	  Say Y if you have such a graphics card.
+	  To compile this driver as a module, choose M here: the
+	  module will be called xgifb.ko

drivers/staging/xgifb/Makefile

@@ -0,0 +1,4 @@
+obj-$(CONFIG_FB_XGI)  += xgifb.o
+
+xgifb-objs := XGI_main_26.o XGI_accel.o vb_init.o vb_setmode.o vb_util.o vb_ext.o
+

drivers/staging/xgifb/TODO

@@ -0,0 +1,15 @@
+This drivers still need a lot of work. I can list all cleanups to do but it's
+going to be long. So, I'm writing "cleanups" and not the list.
+
+Arnaud
+
+TODO:
+- clean ups
+- fix build warnings when module
+- sort out dup ids with SiS driver
+- remove useless/wrong/unused #ifdef/code/...
+- fix printk usages
+- get rid of non-linux related stuff
+
+Please send patches to:
+Arnaud Patard <apatard@mandriva.com>

drivers/staging/xgifb/XGI.h

@@ -0,0 +1,10 @@
+#ifndef _XGI_H
+#define _XGI_H
+
+#if 1
+#define TWDEBUG(x)
+#else
+#define TWDEBUG(x) printk(KERN_INFO x "\n");
+#endif
+
+#endif