cpu_is_* class functions create a dependency to OMAP platform code.
omapdss driver, which omap_vout uses, exposes a function to get the
version of the DSS hardware.

To remove the dependency to OMAP platform code this patch changes
omap_vout to use the omapdss version. For most of the checks, the ones
dealing with DSS differences, this is actually more correct than using
cpu_is_* functions. For the check whether VRFB is available or not this
is not really correct, but still works fine.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>
Tested-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: NMauro Carvalho Chehab <mchehab@redhat.com>

The remaining drivers are mostly platform drivers. Name the
dir to reflect it.

It makes sense to latter break it into a few other dirs.
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Move the inline functions rotate_90_or_270(), rotation_enabled(), and
calc_rotation() from omap_vout.c to omap_voutdef.h.

Move the independent functions omap_vout_alloc_buffer() and
omap_vout_free_buffer() to omap_voutlib.c.

Remove extern identifier from function definitions in omap_voutlib.h

Add static identifier to functions that are used locally in omap_vout.c
Signed-off-by: NArchit Taneja <archit@ti.com>
Signed-off-by: NVaibhav Hiremath <hvaibhav@ti.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Features Supported -
	1. Provides V4L2 user interface for the video pipelines of DSS
	2. Basic streaming working on LCD, DVI and TV.
	3. Works on latest DSS2 library from Tomi
	4. Support for various pixel formats like YUV, UYVY, RGB32, RGB24,
	   RGB565
	5. Supports Alpha blending.
	6. Supports Color keying both source and destination.
	7. Supports rotation.
	8. Supports cropping.
	9. Supports Background color setting.
	10. Allocated buffers to only needed size
Signed-off-by: NVaibhav Hiremath <hvaibhav@ti.com>
Reviewed-by: NHans Verkuil <hverkuil@xs4all.nl>
Reviewed-by: NMuralidharan Karicheri <mkaricheri@gmail.com>
Signed-off-by: NMurailidharan Karicheri <mkaricheri@gmail.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>