tree c23ddf5a15100c76a5b7e2bbc7ec6e9e28b86f17
parent 40a0136b5a7113ccf8d17e56c1f25f63427c4022
author Andy Gross <andy.gross@ti.com> 1355950417 -0600
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1358457595 -0800

drm/omap: Add PM capabilities

Added power management capabilities into the omapdrm and DMM drivers.
During suspend, we don't need to do anything to maintain the state of
the LUT.  We have all the necessary information to recreate the mappings
of the GEM object list maintained by the omapdrm driver.

On resume, the DMM resume handler will first reprogram the LUT to point
to the dummy page.  The subsequent resume handler in the omapdrm will call
into the DMM and reprogram each of the buffer objects.  This will ensure
that all of the necessary objects will be pinned into the DMM properly.

Order of suspend/resume handlers is done by device creation.  We create
the DMM device before the omapdrm, so the correct order is maintained.

Signed-off-by: Andy Gross <andy.gross@ti.com>
Signed-off-by: Rob Clark <rob@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>