fb: add s3c-fb driver for newer Samsung SoC framebuffer devices

Add support for the newer Samsung devices, such as found in the S3C2443,
S3C6400 or S3C6410 series SoC.

It currently does not support all the alpha- or chroma-key options but it
will support more exporting more than one framebuffer ready for adding
overlay and blending functions.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/video/Kconfig

@@ -1920,6 +1920,30 @@ config FB_TMIO_ACCELL
 	depends on FB_TMIO
 	default y
 
+config FB_S3C
+	tristate "Samsung S3C framebuffer support"
+	depends on FB && ARCH_S3C64XX
+	select FB_CFB_FILLRECT
+	select FB_CFB_COPYAREA
+	select FB_CFB_IMAGEBLIT
+	---help---
+	  Frame buffer driver for the built-in FB controller in the Samsung
+	  SoC line from the S3C2443 onwards, including the S3C2416, S3C2450,
+	  and the S3C64XX series such as the S3C6400 and S3C6410.
+
+	  These chips all have the same basic framebuffer design with the
+	  actual capabilities depending on the chip. For instance the S3C6400
+	  and S3C6410 support 4 hardware windows whereas the S3C24XX series
+	  currently only have two.
+
+	  Currently the support is only for the S3C6400 and S3C6410 SoCs.
+
+config FB_S3C_DEBUG_REGWRITE
+       bool "Debug register writes"
+       depends on FB_S3C
+       ---help---
+         Show all register writes via printk(KERN_DEBUG)
+
 config FB_S3C2410
 	tristate "S3C2410 LCD framebuffer support"
 	depends on FB && ARCH_S3C2410

drivers/video/Makefile

@@ -111,6 +111,7 @@ obj-$(CONFIG_FB_BROADSHEET)       += broadsheetfb.o
 obj-$(CONFIG_FB_S1D13XXX)	  += s1d13xxxfb.o
 obj-$(CONFIG_FB_SH7760)		  += sh7760fb.o
 obj-$(CONFIG_FB_IMX)              += imxfb.o
+obj-$(CONFIG_FB_S3C)		  += s3c-fb.o
 obj-$(CONFIG_FB_S3C2410)	  += s3c2410fb.o
 obj-$(CONFIG_FB_FSL_DIU)	  += fsl-diu-fb.o
 obj-$(CONFIG_FB_COBALT)           += cobalt_lcdfb.o