OMAP: DSS2: Display Subsystem Driver core

The core files of DSS2. DSS2 commits are split a bit artificially to
make the individual commits smaller, and DSS2 doesn't compile properly
without the rest of the core commits. This shouldn't be a problem, as no
configuration uses DSS2 yet.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>

drivers/video/omap2/Kconfig

@@ -3,3 +3,5 @@ config OMAP2_VRAM
 
 config OMAP2_VRFB
 	bool
+
+source "drivers/video/omap2/dss/Kconfig"

drivers/video/omap2/Makefile

 obj-$(CONFIG_OMAP2_VRAM) += vram.o
 obj-$(CONFIG_OMAP2_VRFB) += vrfb.o
+
+obj-y += dss/

drivers/video/omap2/dss/Kconfig

+menuconfig OMAP2_DSS
+        tristate "OMAP2/3 Display Subsystem support (EXPERIMENTAL)"
+        depends on ARCH_OMAP2 || ARCH_OMAP3
+        help
+          OMAP2/3 Display Subsystem support.
+
+if OMAP2_DSS
+
+config OMAP2_VRAM_SIZE
+	int "VRAM size (MB)"
+	range 0 32
+	default 0
+	help
+	  The amount of SDRAM to reserve at boot time for video RAM use.
+	  This VRAM will be used by omapfb and other drivers that need
+	  large continuous RAM area for video use.
+
+	  You can also set this with "vram=<bytes>" kernel argument, or
+	  in the board file.
+
+config OMAP2_DSS_DEBUG_SUPPORT
+        bool "Debug support"
+	default y
+	help
+	  This enables debug messages. You need to enable printing
+	  with 'debug' module parameter.
+
+config OMAP2_DSS_RFBI
+	bool "RFBI support"
+        default n
+	help
+	  MIPI DBI, or RFBI (Remote Framebuffer Interface), support.
+
+config OMAP2_DSS_VENC
+	bool "VENC support"
+        default y
+	help
+	  OMAP Video Encoder support.
+
+config OMAP2_DSS_SDI
+	bool "SDI support"
+	depends on ARCH_OMAP3
+        default n
+	help
+	  SDI (Serial Display Interface) support.
+
+config OMAP2_DSS_DSI
+	bool "DSI support"
+	depends on ARCH_OMAP3
+        default n
+	help
+	  MIPI DSI support.
+
+config OMAP2_DSS_USE_DSI_PLL
+	bool "Use DSI PLL for PCLK (EXPERIMENTAL)"
+	default n
+	depends on OMAP2_DSS_DSI
+	help
+	  Use DSI PLL to generate pixel clock.  Currently only for DPI output.
+	  DSI PLL can be used to generate higher and more precise pixel clocks.
+
+config OMAP2_DSS_FAKE_VSYNC
+	bool "Fake VSYNC irq from manual update displays"
+	default n
+	help
+	  If this is selected, DSI will generate a fake DISPC VSYNC interrupt
+	  when DSI has sent a frame. This is only needed with DSI or RFBI
+	  displays using manual mode, and you want VSYNC to, for example,
+	  time animation.
+
+config OMAP2_DSS_MIN_FCK_PER_PCK
+	int "Minimum FCK/PCK ratio (for scaling)"
+	range 0 32
+	default 0
+	help
+	  This can be used to adjust the minimum FCK/PCK ratio.
+
+	  With this you can make sure that DISPC FCK is at least
+	  n x PCK. Video plane scaling requires higher FCK than
+	  normally.
+
+	  If this is set to 0, there's no extra constraint on the
+	  DISPC FCK. However, the FCK will at minimum be
+	  2xPCK (if active matrix) or 3xPCK (if passive matrix).
+
+	  Max FCK is 173MHz, so this doesn't work if your PCK
+	  is very high.
+
+endif

drivers/video/omap2/dss/Makefile

+obj-$(CONFIG_OMAP2_DSS) += omapdss.o
+omapdss-y := core.o dss.o dispc.o dpi.o display.o manager.o overlay.o
+omapdss-$(CONFIG_OMAP2_DSS_RFBI) += rfbi.o
+omapdss-$(CONFIG_OMAP2_DSS_VENC) += venc.o
+omapdss-$(CONFIG_OMAP2_DSS_SDI) += sdi.o
+omapdss-$(CONFIG_OMAP2_DSS_DSI) += dsi.o