Decrementing the reference count of the previous endpoint node allows to
use the of_graph_get_next_endpoint function in a for_each_... style macro.
All current users of this function that pass a non-NULL prev parameter
(that is, soc_camera and imx-drm) are changed to not decrement the passed
prev argument's refcount themselves.
Signed-off-by: NPhilipp Zabel <p.zabel@pengutronix.de>
Acked-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: NMathieu Poirier <mathieu.poirier@linaro.org>
Acked-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

Add base support for DRA7xx to DSS core.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

kmalloc can return null. Add a check to avoid potential null
pointer dereference error when the pointer is accessed later.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

Move the panel/encoder driver compatible-string converter from
arch/arm/mach-omap2/display.c to omapdss driver. That is a more logical
place for it, as it's really an omapdss internal hack.

The code is rewritten to follow the video node graph, starting from
omapdss. This removes the need to have the device compatible-string
database.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>