This change is to add an interface to MDP for connector devices
setting split display information.
Signed-off-by: NHai Li <hali@codeaurora.org>
Signed-off-by: NRob Clark <robdclark@gmail.com>

Both MDP4 and MDP5 share some code as far as YUV support is
concerned. This change adds this information and will be followed
by the actual MDP4 and MDP5 YUV support patches.
Signed-off-by: NStephane Viau <sviau@codeaurora.org>
Signed-off-by: NRob Clark <robdclark@gmail.com>

As a result of atomic DPMS support, the various prepare/commit hooks get
called in a way that msm dislikes.  We were expecting prepare/commit to
bracket a modeset, which is no longer the case.  This was needed to hold
various extra clk's (such as interface clks) on while we are touching
registers, and in the case of mdp4 holding vblank enabled.

The most straightforward way to deal with this, since we already have
our own atomic_commit(), is to just handle prepare/commit internally to
the driver (with some additional vfuncs for mdp4 vs mdp5), and switch
everything over to instead use the new enable/disable hooks.  It doesn't
really change too much, despite the code motion.  What used to be in the
encoder/crtc dpms() fxns is split out into enable/disable.

We should be able to drop our own enable-state tracking, as the atomic
helpers should do this for us.  But keeping that for the short term for
extra debugging as atomic stablizes.
Signed-off-by: NRob Clark <robdclark@gmail.com>

Signed-off-by: NRob Clark <robdclark@gmail.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

Convert mdp5 over to atomic helpers.  Extend/wrap drm_plane_state to
track plane zpos and to keep track of the needed when applying the
atomic update.  In mdp5's plane->atomic_check() we also need to check
for updates which require SMP reallocation, in order to trigger full
modeset.
Signed-off-by: NRob Clark <robdclark@gmail.com>

Fixes for a couple little issues found in testing.
Signed-off-by: NRob Clark <robdclark@gmail.com>

Simplify things a bit for atomic, gets rid of some bookkeeping, and
makes the code cleaner.

TODO move iterator macro somewhere common.
Signed-off-by: NRob Clark <robdclark@gmail.com>

Add support for the new MDP5 display controller block.  The mapping
between parts of the display controller and KMS is:

  plane   -> PIPE{RGBn,VIGn}             \
  crtc    -> LM (layer mixer)            |-> MDP "device"
  encoder -> INTF                        /
  connector -> HDMI/DSI/eDP/etc          --> other device(s)

Unlike MDP4, it appears we can get by with a single encoder, rather
than needing a different implementation for DTV, DSI, etc.  (Ie. the
register interface is same, just different bases.)

Also unlike MDP4, all the IRQs for other blocks (HDMI, DSI, etc) are
routed through MDP.

And finally, MDP5 has this "Shared Memory Pool" (called "SMP"), from
which blocks need to be allocated to the active pipes based on fetch
stride.
Signed-off-by: NRob Clark <robdclark@gmail.com>

We'll want basically the same thing for mdp5, so refactor it out so it
can be shared.
Signed-off-by: NRob Clark <robdclark@gmail.com>

Signed-off-by: NRob Clark <robdclark@gmail.com>