[PATCH] ps3: Virtual Frame Buffer Driver

Add the PS3 Virtual Frame Buffer Driver.

As the actual graphics hardware cannot be accessed directly by Linux, ps3fb
uses a virtual frame buffer in main memory.  The actual screen image is copied
to graphics memory by the GPU on every vertical blank, by making a hypervisor
call.

Signed-off-by: Geert Uytterhoeven <[email protected]>
Cc: James Simmons <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Cc: Paul Mackerras <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

drivers/video/Kconfig

@@ -1598,6 +1598,26 @@ config FB_IBM_GXT4500
 	  Say Y here to enable support for the IBM GXT4500P display
 	  adaptor, found on some IBM System P (pSeries) machines.
 
+config FB_PS3
+	bool "PS3 GPU framebuffer driver"
+	depends on FB && PPC_PS3
+	select PS3_PS3AV
+	select FB_CFB_FILLRECT
+	select FB_CFB_COPYAREA
+	select FB_CFB_IMAGEBLIT
+	---help---
+	  Include support for the virtual frame buffer in the PS3 platform.
+
+config FB_PS3_DEFAULT_SIZE_M
+	int "PS3 default frame buffer size (in MiB)"
+	depends on FB_PS3
+	default 18
+	---help---
+	  This is the default size (in MiB) of the virtual frame buffer in
+	  the PS3.
+	  The default value can be overridden on the kernel command line
+	  using the "ps3fb" option (e.g. "ps3fb=9M");
+
 config FB_VIRTUAL
 	tristate "Virtual Frame Buffer support (ONLY FOR TESTING!)"
 	depends on FB

drivers/video/Makefile

@@ -97,6 +97,7 @@ obj-$(CONFIG_FB_S3C2410)	  += s3c2410fb.o
 obj-$(CONFIG_FB_PNX4008_DUM)	  += pnx4008/
 obj-$(CONFIG_FB_PNX4008_DUM_RGB)  += pnx4008/
 obj-$(CONFIG_FB_IBM_GXT4500)	  += gxt4500.o
+obj-$(CONFIG_FB_PS3)		  += ps3fb.o
 
 # Platform or fallback drivers go here
 obj-$(CONFIG_FB_VESA)             += vesafb.o