On Mon, Sep 14, 2020 at 11:05:42PM +0300, Ville Syrjälä wrote:
> On Mon, Sep 14, 2020 at 12:45:59PM -0700, Navare, Manasi wrote:
> > On Mon, Sep 14, 2020 at 10:34:12PM +0300, Ville Syrjälä wrote:
> > > On Mon, Sep 14, 2020 at 12:27:58PM -0700, Navare, Manasi wrote:
> > > > On Mon, Sep 14, 2020 at 10:20:41PM +0300, Ville Syrjälä wrote:
> > > > > On Mon, Sep 14, 2020 at 12:14:10PM -0700, Navare, Manasi wrote:
> > > > > > On Thu, Sep 03, 2020 at 10:19:45PM +0300, Ville Syrjälä wrote:
> > > > > > > On Wed, Jul 15, 2020 at 03:42:19PM -0700, Manasi Navare wrote:
> > > > > > > > From: Maarten Lankhorst <maarten.lankho...@linux.intel.com>
> > > > > > > > 
> > > > > > > >  Make sure that when a plane is set in a bigjoiner mode, we 
> > > > > > > > will add
> > > > > > > >  their counterpart to the atomic state as well. This will allow 
> > > > > > > > us to
> > > > > > > >  make sure all state is available when planes are checked.
> > > > > > > > 
> > > > > > > > Because of the funny interactions with bigjoiner and planar YUV
> > > > > > > > formats, we may end up adding a lot of planes, so we have to 
> > > > > > > > keep
> > > > > > > > iterating until we no longer add any planes.
> > > > > > > > 
> > > > > > > > Also fix the atomic intel plane iterator, so things watermarks 
> > > > > > > > start
> > > > > > > > working automagically.
> > > > > > > > 
> > > > > > > > v5:
> > > > > > > > * Rebase after adding sagv support (Manasi)
> > > > > > > > v4:
> > > > > > > > * Manual rebase (Manasi)
> > > > > > > > Changes since v1:
> > > > > > > > - Rebase on top of plane_state split, cleaning up the code a 
> > > > > > > > lot.
> > > > > > > > - Make intel_atomic_crtc_state_for_each_plane_state() bigjoiner 
> > > > > > > > capable.
> > > > > > > > - Add iter macro to 
> > > > > > > > intel_atomic_crtc_state_for_each_plane_state() to
> > > > > > > >   keep iteration working.
> > > > > > > > Changes since v2:
> > > > > > > > - Add icl_(un)set_bigjoiner_plane_links, to make it more clear 
> > > > > > > > where
> > > > > > > >   links are made and broken.
> > > > > > > > 
> > > > > > > > Signed-off-by: Maarten Lankhorst 
> > > > > > > > <maarten.lankho...@linux.intel.com>
> > > > > > > > Signed-off-by: Manasi Navare <manasi.d.nav...@intel.com>
> > > > > > > > ---
> > > > > > > >  .../gpu/drm/i915/display/intel_atomic_plane.c |  52 ++++-
> > > > > > > >  .../gpu/drm/i915/display/intel_atomic_plane.h |   3 +-
> > > > > > > >  drivers/gpu/drm/i915/display/intel_display.c  | 207 
> > > > > > > > ++++++++++++++++--
> > > > > > > >  drivers/gpu/drm/i915/display/intel_display.h  |  20 +-
> > > > > > > >  .../drm/i915/display/intel_display_types.h    |  11 +
> > > > > > > >  drivers/gpu/drm/i915/intel_pm.c               |  20 +-
> > > > > > > >  6 files changed, 274 insertions(+), 39 deletions(-)
> > > > > > > > 
> > > > > > > > diff --git a/drivers/gpu/drm/i915/display/intel_atomic_plane.c 
> > > > > > > > b/drivers/gpu/drm/i915/display/intel_atomic_plane.c
> > > > > > > > index 79032701873a..5c6e72063fac 100644
> > > > > > > > --- a/drivers/gpu/drm/i915/display/intel_atomic_plane.c
> > > > > > > > +++ b/drivers/gpu/drm/i915/display/intel_atomic_plane.c
> > > > > > > > @@ -246,11 +246,17 @@ static void 
> > > > > > > > intel_plane_clear_hw_state(struct intel_plane_state 
> > > > > > > > *plane_state)
> > > > > > > >         memset(&plane_state->hw, 0, sizeof(plane_state->hw));
> > > > > > > >  }
> > > > > > > >  
> > > > > > > > -void intel_plane_copy_uapi_to_hw_state(struct 
> > > > > > > > intel_plane_state *plane_state,
> > > > > > > > +void intel_plane_copy_uapi_to_hw_state(const struct 
> > > > > > > > intel_crtc_state *crtc_state,
> > > > > > > > +                                      struct intel_plane_state 
> > > > > > > > *plane_state,
> > > > > > > >                                        const struct 
> > > > > > > > intel_plane_state *from_plane_state)
> > > > > > > >  {
> > > > > > > >         intel_plane_clear_hw_state(plane_state);
> > > > > > > >  
> > > > > > > > +       if (from_plane_state->uapi.crtc)
> > > > > > > > +               plane_state->hw.crtc = crtc_state->uapi.crtc;
> > > > > > > > +       else
> > > > > > > > +               plane_state->hw.crtc = NULL;
> > > > > > > > +
> > > > > > > >         plane_state->hw.crtc = from_plane_state->uapi.crtc;
> > > > > > > 
> > > > > > > eh?
> > > > > > 
> > > > > > Hmm good catch here, this one definitely looks fishy probably got 
> > > > > > messed up in the rebase
> > > > > > so this should just be:
> > > > > > 
> > > > > >  if (from_plane_state->uapi.crtc)
> > > > > >     plane_state->hw.crtc = crtc_state->uapi.crtc;
> > > > > > else
> > > > > >      plane_state->hw.crtc = NULL;
> > > > > > 
> > > > > > And the reassignmnet of plane_state->hw.crtc should be removed.
> > > > > > 
> > > > > > Good?
> > > > > 
> > > > > The if-else seems totally pointless.
> > > > >
> > > > 
> > > > Hmm yes so we assume that if from_plane_state->uapi.crtc is NULL then 
> > > > crtc_state->uapi.crtc is NULL?
> > > > Then just have  plane_state->hw.crtc = crtc_state->uapi.crtc; without 
> > > > if-else?
> > > 
> > > Actually, re-reading this I don't even understand what this code is doing.
> > >
> > 
> > My understanding was that here this gets called by: 
> > intel_plane_atomic_check() where from_plane_state
> > comes from the master_plane_state and then we copy this uapi state to hw 
> > state for both master and slave planes.
> > 
> > so now if it has a crtc meaning it is the master crtc then we assign 
> > plane_state->hw.crtc = crtc_state->uapi.crtc; else it means it is a slave 
> > crtc and hence hw.crtc would be NULL?
> 
> Hmm. I guess I understand what it's doing now. Just feels like a
> strange way to do it. Might be simpler to leave this part to the
> caller. But then we're perhaps going to have to update several callers
> which isn't so great either. Not sure. At least it needs a comment
> of some sort to explain wtf is going on.
>

So will my above explanation suffice in the comment?

Manasi
 
> > 
> > I donno, may be Maarten needs to clarify this.
> > 
> > @Maarten??
> > 
> > Manasi
> >  
> > > > 
> > > > Manasi
> > > >  
> > > > > > 
> > > > > > > 
> > > > > > > >         plane_state->hw.fb = from_plane_state->uapi.fb;
> > > > > > > >         if (plane_state->hw.fb)
> > > > > > > > @@ -319,15 +325,36 @@ int 
> > > > > > > > intel_plane_atomic_check_with_state(const struct 
> > > > > > > > intel_crtc_state *old_crtc_
> > > > > > > >  }
> > > > > > > >  
> > > > > > > >  static struct intel_crtc *
> > > > > > > > -get_crtc_from_states(const struct intel_plane_state 
> > > > > > > > *old_plane_state,
> > > > > > > > +get_crtc_from_states(struct intel_atomic_state *state,
> > > > > > > > +                    const struct intel_plane_state 
> > > > > > > > *old_plane_state,
> > > > > > > >                      const struct intel_plane_state 
> > > > > > > > *new_plane_state)
> > > > > > > >  {
> > > > > > > > +       struct drm_i915_private *dev_priv = 
> > > > > > > > to_i915(state->base.dev);
> > > > > > > > +       struct intel_plane *plane = 
> > > > > > > > to_intel_plane(new_plane_state->uapi.plane);
> > > > > > > > +
> > > > > > > >         if (new_plane_state->uapi.crtc)
> > > > > > > >                 return 
> > > > > > > > to_intel_crtc(new_plane_state->uapi.crtc);
> > > > > > > >  
> > > > > > > >         if (old_plane_state->uapi.crtc)
> > > > > > > >                 return 
> > > > > > > > to_intel_crtc(old_plane_state->uapi.crtc);
> > > > > > > >  
> > > > > > > > +       if (new_plane_state->bigjoiner_slave) {
> > > > > > > > +               const struct intel_plane_state 
> > > > > > > > *new_master_plane_state =
> > > > > > > > +                       intel_atomic_get_new_plane_state(state, 
> > > > > > > > new_plane_state->bigjoiner_plane);
> > > > > > > > +
> > > > > > > > +               /* need to use uapi here, 
> > > > > > > > new_master_plane_state might not be copied to hw yet */
> > > > > > > > +               if (new_master_plane_state->uapi.crtc)
> > > > > > > > +                       return 
> > > > > > > > intel_get_crtc_for_pipe(dev_priv, plane->pipe);
> > > > > > > > +       }
> > > > > > > > +
> > > > > > > > +       if (old_plane_state->bigjoiner_slave) {
> > > > > > > > +               const struct intel_plane_state 
> > > > > > > > *old_master_plane_state =
> > > > > > > > +                       intel_atomic_get_old_plane_state(state, 
> > > > > > > > old_plane_state->bigjoiner_plane);
> > > > > > > > +
> > > > > > > > +               if (old_master_plane_state->uapi.crtc)
> > > > > > > > +                       return 
> > > > > > > > intel_get_crtc_for_pipe(dev_priv, plane->pipe);
> > > > > > > > +       }
> > > > > > > > +
> > > > > > > >         return NULL;
> > > > > > > >  }
> > > > > > > >  
> > > > > > > > @@ -338,18 +365,33 @@ int intel_plane_atomic_check(struct 
> > > > > > > > intel_atomic_state *state,
> > > > > > > >                 intel_atomic_get_new_plane_state(state, plane);
> > > > > > > >         const struct intel_plane_state *old_plane_state =
> > > > > > > >                 intel_atomic_get_old_plane_state(state, plane);
> > > > > > > > +       const struct intel_plane_state *new_master_plane_state;
> > > > > > > >         struct intel_crtc *crtc =
> > > > > > > > -               get_crtc_from_states(old_plane_state, 
> > > > > > > > new_plane_state);
> > > > > > > > +               get_crtc_from_states(state, old_plane_state,
> > > > > > > > +                                    new_plane_state);
> > > > > > > >         const struct intel_crtc_state *old_crtc_state;
> > > > > > > >         struct intel_crtc_state *new_crtc_state;
> > > > > > > >  
> > > > > > > > -       intel_plane_copy_uapi_to_hw_state(new_plane_state, 
> > > > > > > > new_plane_state);
> > > > > > > > +       if (crtc)
> > > > > > > > +               new_crtc_state = 
> > > > > > > > intel_atomic_get_new_crtc_state(state, crtc);
> > > > > > > > +       else
> > > > > > > > +               new_crtc_state = NULL;
> > > > > > > > +
> > > > > > > > +       new_master_plane_state = new_plane_state;
> > > > > > > > +       if (new_plane_state->bigjoiner_slave)
> > > > > > > > +               new_master_plane_state =
> > > > > > > > +                       intel_atomic_get_new_plane_state(state,
> > > > > > > > +                                                        
> > > > > > > > new_plane_state->bigjoiner_plane);
> > > > > > > > +
> > > > > > > > +       intel_plane_copy_uapi_to_hw_state(new_crtc_state,
> > > > > > > > +                                         new_plane_state,
> > > > > > > > +                                         
> > > > > > > > new_master_plane_state);
> > > > > > > > +
> > > > > > > >         new_plane_state->uapi.visible = false;
> > > > > > > >         if (!crtc)
> > > > > > > >                 return 0;
> > > > > > > >  
> > > > > > > >         old_crtc_state = intel_atomic_get_old_crtc_state(state, 
> > > > > > > > crtc);
> > > > > > > > -       new_crtc_state = intel_atomic_get_new_crtc_state(state, 
> > > > > > > > crtc);
> > > > > > > >  
> > > > > > > >         return 
> > > > > > > > intel_plane_atomic_check_with_state(old_crtc_state,
> > > > > > > >                                                    
> > > > > > > > new_crtc_state,
> > > > > > > > diff --git a/drivers/gpu/drm/i915/display/intel_atomic_plane.h 
> > > > > > > > b/drivers/gpu/drm/i915/display/intel_atomic_plane.h
> > > > > > > > index 59dd1fbb02ea..c2a1e7c86e6c 100644
> > > > > > > > --- a/drivers/gpu/drm/i915/display/intel_atomic_plane.h
> > > > > > > > +++ b/drivers/gpu/drm/i915/display/intel_atomic_plane.h
> > > > > > > > @@ -23,7 +23,8 @@ unsigned int intel_plane_pixel_rate(const 
> > > > > > > > struct intel_crtc_state *crtc_state,
> > > > > > > >  
> > > > > > > >  unsigned int intel_plane_data_rate(const struct 
> > > > > > > > intel_crtc_state *crtc_state,
> > > > > > > >                                    const struct 
> > > > > > > > intel_plane_state *plane_state);
> > > > > > > > -void intel_plane_copy_uapi_to_hw_state(struct 
> > > > > > > > intel_plane_state *plane_state,
> > > > > > > > +void intel_plane_copy_uapi_to_hw_state(const struct 
> > > > > > > > intel_crtc_state *crtc_state,
> > > > > > > > +                                      struct intel_plane_state 
> > > > > > > > *plane_state,
> > > > > > > >                                        const struct 
> > > > > > > > intel_plane_state *from_plane_state);
> > > > > > > >  void intel_update_plane(struct intel_plane *plane,
> > > > > > > >                         const struct intel_crtc_state 
> > > > > > > > *crtc_state,
> > > > > > > > diff --git a/drivers/gpu/drm/i915/display/intel_display.c 
> > > > > > > > b/drivers/gpu/drm/i915/display/intel_display.c
> > > > > > > > index bfc5c890ab4e..6f4a2845674d 100644
> > > > > > > > --- a/drivers/gpu/drm/i915/display/intel_display.c
> > > > > > > > +++ b/drivers/gpu/drm/i915/display/intel_display.c
> > > > > > > > @@ -3693,7 +3693,7 @@ intel_find_initial_plane_obj(struct 
> > > > > > > > intel_crtc *intel_crtc,
> > > > > > > >         drm_framebuffer_get(fb);
> > > > > > > >  
> > > > > > > >         plane_state->crtc = &intel_crtc->base;
> > > > > > > > -       intel_plane_copy_uapi_to_hw_state(intel_state, 
> > > > > > > > intel_state);
> > > > > > > > +       intel_plane_copy_uapi_to_hw_state(crtc_state, 
> > > > > > > > intel_state, intel_state);
> > > > > > > >  
> > > > > > > >         intel_frontbuffer_flush(to_intel_frontbuffer(fb), 
> > > > > > > > ORIGIN_DIRTYFB);
> > > > > > > >  
> > > > > > > > @@ -12582,26 +12582,180 @@ static bool 
> > > > > > > > check_single_encoder_cloning(struct intel_atomic_state *state,
> > > > > > > >         return true;
> > > > > > > >  }
> > > > > > > >  
> > > > > > > > +static int icl_unset_bigjoiner_plane_links(struct 
> > > > > > > > intel_atomic_state *state,
> > > > > > > > +                                          struct 
> > > > > > > > intel_crtc_state *new_crtc_state)
> > > > > > > > +{
> > > > > > > > +       struct intel_crtc *crtc = 
> > > > > > > > to_intel_crtc(new_crtc_state->uapi.crtc);
> > > > > > > > +       struct intel_plane *plane;
> > > > > > > > +
> > > > > > > > +       /*
> > > > > > > > +        * Teardown the old bigjoiner plane mappings.
> > > > > > > > +        */
> > > > > > > > +       for_each_intel_plane_on_crtc(crtc->base.dev, crtc, 
> > > > > > > > plane) {
> > > > > > > > +               struct intel_plane_state *plane_state, 
> > > > > > > > *other_plane_state;
> > > > > > > > +               struct intel_plane *other_plane;
> > > > > > > > +
> > > > > > > > +               plane_state = 
> > > > > > > > intel_atomic_get_plane_state(state, plane);
> > > > > > > > +               if (IS_ERR(plane_state))
> > > > > > > > +                       return PTR_ERR(plane_state);
> > > > > > > > +
> > > > > > > > +               other_plane = plane_state->bigjoiner_plane;
> > > > > > > > +               if (!other_plane)
> > > > > > > > +                       continue;
> > > > > > > > +
> > > > > > > > +               plane_state->bigjoiner_plane = NULL;
> > > > > > > > +               plane_state->bigjoiner_slave = false;
> > > > > > > > +
> > > > > > > > +               other_plane_state = 
> > > > > > > > intel_atomic_get_plane_state(state, other_plane);
> > > > > > > > +               if (IS_ERR(other_plane_state))
> > > > > > > > +                       return PTR_ERR(other_plane_state);
> > > > > > > > +               other_plane_state->bigjoiner_plane = NULL;
> > > > > > > > +               other_plane_state->bigjoiner_slave = false;
> > > > > > > > +       }
> > > > > > > > +       return 0;
> > > > > > > > +}
> > > > > > > > +
> > > > > > > > +static int icl_set_bigjoiner_plane_links(struct 
> > > > > > > > intel_atomic_state *state,
> > > > > > > > +                                        struct 
> > > > > > > > intel_crtc_state *new_crtc_state)
> > > > > > > > +{
> > > > > > > > +       struct intel_plane *plane;
> > > > > > > > +       struct intel_crtc *crtc = 
> > > > > > > > to_intel_crtc(new_crtc_state->uapi.crtc);
> > > > > > > > +       struct intel_crtc *other_crtc = 
> > > > > > > > new_crtc_state->bigjoiner_linked_crtc;
> > > > > > > > +
> > > > > > > > +       /*
> > > > > > > > +         * Setup and teardown the new bigjoiner plane mappings.
> > > > > > > > +         */
> > > > > > > > +       for_each_intel_plane_on_crtc(crtc->base.dev, crtc, 
> > > > > > > > plane) {
> > > > > > > > +               struct intel_plane_state *plane_state;
> > > > > > > > +               struct intel_plane *other_plane = NULL;
> > > > > > > > +               bool found_plane = false;
> > > > > > > > +
> > > > > > > > +               plane_state = 
> > > > > > > > intel_atomic_get_plane_state(state, plane);
> > > > > > > > +               if (IS_ERR(plane_state))
> > > > > > > > +                       return PTR_ERR(plane_state);
> > > > > > > > +
> > > > > > > > +               for_each_intel_plane_on_crtc(crtc->base.dev, 
> > > > > > > > other_crtc, other_plane) {
> > > > > > > > +                       if (other_plane->id != plane->id)
> > > > > > > > +                               continue;
> > > > > > > > +
> > > > > > > > +                       plane_state->bigjoiner_plane = 
> > > > > > > > other_plane;
> > > > > > > > +                       plane_state->bigjoiner_slave = 
> > > > > > > > new_crtc_state->bigjoiner_slave;
> > > > > > > > +
> > > > > > > > +                       plane_state = 
> > > > > > > > intel_atomic_get_plane_state(state, other_plane);
> > > > > > > > +                       if (IS_ERR(plane_state))
> > > > > > > > +                               return PTR_ERR(plane_state);
> > > > > > > > +
> > > > > > > > +                       plane_state->bigjoiner_plane = plane;
> > > > > > > > +                       plane_state->bigjoiner_slave = 
> > > > > > > > !new_crtc_state->bigjoiner_slave;
> > > > > > > > +
> > > > > > > > +                       found_plane = true;
> > > > > > > > +                       break;
> > > > > > > > +               }
> > > > > > > > +
> > > > > > > > +               if (!found_plane) {
> > > > > > > > +                       /* All pipes should have identical 
> > > > > > > > planes. */
> > > > > > > > +                       WARN_ON(!found_plane);
> > > > > > > > +                       return -EINVAL;
> > > > > > > > +               }
> > > > > > > > +       }
> > > > > > > > +       return 0;
> > > > > > > > +}
> > > > > > > > +
> > > > > > > > +static int icl_add_dependent_planes(struct intel_atomic_state 
> > > > > > > > *state,
> > > > > > > > +                                   struct intel_plane_state 
> > > > > > > > *plane_state)
> > > > > > > > +{
> > > > > > > > +       struct intel_plane_state *new_plane_state;
> > > > > > > > +       struct intel_plane *plane;
> > > > > > > > +       int ret = 0;
> > > > > > > > +
> > > > > > > > +       plane = plane_state->bigjoiner_plane;
> > > > > > > > +       if (plane && !intel_atomic_get_new_plane_state(state, 
> > > > > > > > plane)) {
> > > > > > > > +               new_plane_state = 
> > > > > > > > intel_atomic_get_plane_state(state, plane);
> > > > > > > > +               if (IS_ERR(new_plane_state))
> > > > > > > > +                       return PTR_ERR(new_plane_state);
> > > > > > > > +
> > > > > > > > +               ret = 1;
> > > > > > > > +       }
> > > > > > > > +
> > > > > > > > +       plane = plane_state->planar_linked_plane;
> > > > > > > > +       if (plane && !intel_atomic_get_new_plane_state(state, 
> > > > > > > > plane)) {
> > > > > > > > +               new_plane_state = 
> > > > > > > > intel_atomic_get_plane_state(state, plane);
> > > > > > > > +               if (IS_ERR(new_plane_state))
> > > > > > > > +                       return PTR_ERR(new_plane_state);
> > > > > > > > +
> > > > > > > > +               ret = 1;
> > > > > > > > +       }
> > > > > > > > +
> > > > > > > > +       return ret;
> > > > > > > > +}
> > > > > > > > +
> > > > > > > >  static int icl_add_linked_planes(struct intel_atomic_state 
> > > > > > > > *state)
> > > > > > > >  {
> > > > > > > > -       struct intel_plane *plane, *linked;
> > > > > > > > -       struct intel_plane_state *plane_state, 
> > > > > > > > *linked_plane_state;
> > > > > > > > +       struct intel_plane *plane;
> > > > > > > > +       struct intel_plane_state *old_plane_state, 
> > > > > > > > *new_plane_state;
> > > > > > > > +       struct intel_crtc *crtc, *linked_crtc;
> > > > > > > > +       struct intel_crtc_state *old_crtc_state, 
> > > > > > > > *new_crtc_state, *linked_crtc_state;
> > > > > > > > +       bool added;
> > > > > > > >         int i;
> > > > > > > >  
> > > > > > > > -       for_each_new_intel_plane_in_state(state, plane, 
> > > > > > > > plane_state, i) {
> > > > > > > > -               linked = plane_state->planar_linked_plane;
> > > > > > > > +       /*
> > > > > > > > +        * Iteratively add plane_state->linked_plane and 
> > > > > > > > plane_state->bigjoiner_plane
> > > > > > > > +        *
> > > > > > > > +        * This needs to be done repeatedly, because of is a 
> > > > > > > > funny interaction;
> > > > > > > > +        * the Y-plane may be assigned differently on the other 
> > > > > > > > bigjoiner crtc,
> > > > > > > > +        * and we could end up with the following evil 
> > > > > > > > recursion, when only adding a
> > > > > > > > +        * single plane to state:
> > > > > > > > +         *
> > > > > > > > +        * XRGB8888 master plane 6 adds NV12 slave Y-plane 6, 
> > > > > > > > which adds slave UV plane 0,
> > > > > > > > +        * which adds master UV plane 0, which adds master 
> > > > > > > > Y-plane 7, which adds XRGB8888
> > > > > > > > +        *slave plane 7.
> > > > > > > 
> > > > > > > Feels like this has become super complicated by mixing up the 
> > > > > > > bigjoiner
> > > > > > > and Y plane cases. Can't we just handle them separately. First 
> > > > > > > deal with
> > > > > > > bigjoiner planes, then let each crtc handle its Y-planes 
> > > > > > > independently?
> > > > > > >
> > > > > > 
> > > > > > Yea this is a complex algorithm here. But if functionally it looks 
> > > > > > right
> > > > > > I dont feel comfortable detangling it since originally written by 
> > > > > > Maarten.
> > > > > > 
> > > > > > Manasi
> > > > > >  
> > > > > > > > +        *
> > > > > > > > +        * We could pull in even more because of 
> > > > > > > > old_plane_state vs new_plane_state.
> > > > > > > > +        *
> > > > > > > > +        * Max depth = 5 (or 7 for evil case) in this case.
> > > > > > > > +        * Number of passes will be less, because newly added 
> > > > > > > > planes show up in the
> > > > > > > > +        * same iteration round when added_plane->index > 
> > > > > > > > plane->index.
> > > > > > > > +        */
> > > > > > > > +       do {
> > > > > > > > +               added = false;
> > > > > > > >  
> > > > > > > > -               if (!linked)
> > > > > > > > -                       continue;
> > > > > > > > +               for_each_oldnew_intel_plane_in_state(state, 
> > > > > > > > plane, old_plane_state, new_plane_state, i) {
> > > > > > > > +                       int ret, ret2;
> > > > > > > > +
> > > > > > > > +                       ret = icl_add_dependent_planes(state, 
> > > > > > > > old_plane_state);
> > > > > > > > +                       if (ret < 0)
> > > > > > > > +                               return ret;
> > > > > > > > +
> > > > > > > > +                       ret2 = icl_add_dependent_planes(state, 
> > > > > > > > new_plane_state);
> > > > > > > > +                       if (ret2 < 0)
> > > > > > > > +                               return ret2;
> > > > > > > > +
> > > > > > > > +                       added |= ret || ret2;
> > > > > > > > +               }
> > > > > > > > +       } while (added);
> > > > > > > > +
> > > > > > > > +       /*
> > > > > > > > +         * Make sure bigjoiner slave crtc's are also pulled 
> > > > > > > > in. This is not done automatically
> > > > > > > > +         * when adding slave planes, because plane_state->crtc 
> > > > > > > > is null.
> > > > > > > > +         */
> > > > > > > > +       for_each_oldnew_intel_crtc_in_state(state, crtc, 
> > > > > > > > old_crtc_state, new_crtc_state, i) {
> > > > > > > > +               linked_crtc = 
> > > > > > > > old_crtc_state->bigjoiner_linked_crtc;
> > > > > > > > +               if (linked_crtc) {
> > > > > > > > +                       linked_crtc_state =
> > > > > > > > +                               
> > > > > > > > intel_atomic_get_crtc_state(&state->base, linked_crtc);
> > > > > > > > +
> > > > > > > > +                       if (IS_ERR(linked_crtc_state))
> > > > > > > > +                               return 
> > > > > > > > PTR_ERR(linked_crtc_state);
> > > > > > > > +               }
> > > > > > > >  
> > > > > > > > -               linked_plane_state = 
> > > > > > > > intel_atomic_get_plane_state(state, linked);
> > > > > > > > -               if (IS_ERR(linked_plane_state))
> > > > > > > > -                       return PTR_ERR(linked_plane_state);
> > > > > > > > +               linked_crtc = 
> > > > > > > > new_crtc_state->bigjoiner_linked_crtc;
> > > > > > > > +               if (linked_crtc && linked_crtc != 
> > > > > > > > old_crtc_state->bigjoiner_linked_crtc) {
> > > > > > > > +                       linked_crtc_state =
> > > > > > > > +                               
> > > > > > > > intel_atomic_get_crtc_state(&state->base, linked_crtc);
> > > > > > > >  
> > > > > > > > -               drm_WARN_ON(state->base.dev,
> > > > > > > > -                           
> > > > > > > > linked_plane_state->planar_linked_plane != plane);
> > > > > > > > -               drm_WARN_ON(state->base.dev,
> > > > > > > > -                           linked_plane_state->planar_slave == 
> > > > > > > > plane_state->planar_slave);
> > > > > > > > +                       if (IS_ERR(linked_crtc_state))
> > > > > > > > +                               return 
> > > > > > > > PTR_ERR(linked_crtc_state);
> > > > > > > > +               }
> > > > > > > >         }
> > > > > > > >  
> > > > > > > >         return 0;
> > > > > > > > @@ -12641,6 +12795,7 @@ static int icl_check_nv12_planes(struct 
> > > > > > > > intel_crtc_state *crtc_state)
> > > > > > > >  
> > > > > > > >         for_each_new_intel_plane_in_state(state, plane, 
> > > > > > > > plane_state, i) {
> > > > > > > >                 struct intel_plane_state *linked_state = NULL;
> > > > > > > > +               struct intel_plane_state *master_plane_state;
> > > > > > > >  
> > > > > > > >                 if (plane->pipe != crtc->pipe ||
> > > > > > > >                     !(crtc_state->nv12_planes & BIT(plane->id)))
> > > > > > > > @@ -12684,7 +12839,14 @@ static int 
> > > > > > > > icl_check_nv12_planes(struct intel_crtc_state *crtc_state)
> > > > > > > >                 memcpy(linked_state->color_plane, 
> > > > > > > > plane_state->color_plane,
> > > > > > > >                        sizeof(linked_state->color_plane));
> > > > > > > >  
> > > > > > > > -               intel_plane_copy_uapi_to_hw_state(linked_state, 
> > > > > > > > plane_state);
> > > > > > > > +               master_plane_state = plane_state;
> > > > > > > > +               if (plane_state->bigjoiner_slave)
> > > > > > > > +                       master_plane_state =
> > > > > > > > +                               
> > > > > > > > intel_atomic_get_new_plane_state(state,
> > > > > > > > +                                                               
> > > > > > > >  plane_state->bigjoiner_plane);
> > > > > > > > +
> > > > > > > > +               intel_plane_copy_uapi_to_hw_state(crtc_state, 
> > > > > > > > linked_state,
> > > > > > > > +                                                 
> > > > > > > > master_plane_state);
> > > > > > > >                 linked_state->uapi.src = plane_state->uapi.src;
> > > > > > > >                 linked_state->uapi.dst = plane_state->uapi.dst;
> > > > > > > >  
> > > > > > > > @@ -15028,6 +15190,7 @@ static int 
> > > > > > > > intel_atomic_check_bigjoiner(struct intel_atomic_state *state,
> > > > > > > >         struct drm_i915_private *dev_priv = 
> > > > > > > > to_i915(state->base.dev);
> > > > > > > >         struct intel_crtc_state *slave_crtc_state, 
> > > > > > > > *master_crtc_state;
> > > > > > > >         struct intel_crtc *slave, *master;
> > > > > > > > +       int ret;
> > > > > > > >  
> > > > > > > >         /* slave being enabled, is master is still claiming 
> > > > > > > > this crtc? */
> > > > > > > >         if (old_crtc_state->bigjoiner_slave) {
> > > > > > > > @@ -15038,6 +15201,12 @@ static int 
> > > > > > > > intel_atomic_check_bigjoiner(struct intel_atomic_state *state,
> > > > > > > >                         goto claimed;
> > > > > > > >         }
> > > > > > > >  
> > > > > > > > +       if (old_crtc_state->bigjoiner) {
> > > > > > > > +               ret = icl_unset_bigjoiner_plane_links(state, 
> > > > > > > > new_crtc_state);
> > > > > > > > +               if (ret)
> > > > > > > > +                       return ret;
> > > > > > > > +       }
> > > > > > > > +
> > > > > > > >         if (!new_crtc_state->bigjoiner)
> > > > > > > >                 return 0;
> > > > > > > >  
> > > > > > > > @@ -15062,7 +15231,11 @@ static int 
> > > > > > > > intel_atomic_check_bigjoiner(struct intel_atomic_state *state,
> > > > > > > >         DRM_DEBUG_KMS("[CRTC:%d:%s] Used as slave for big 
> > > > > > > > joiner\n",
> > > > > > > >                       slave->base.base.id, slave->base.name);
> > > > > > > >  
> > > > > > > > -       return copy_bigjoiner_crtc_state(slave_crtc_state, 
> > > > > > > > new_crtc_state);
> > > > > > > > +       ret = copy_bigjoiner_crtc_state(slave_crtc_state, 
> > > > > > > > new_crtc_state);
> > > > > > > > +       if (ret)
> > > > > > > > +               return ret;
> > > > > > > > +
> > > > > > > > +       return icl_set_bigjoiner_plane_links(state, 
> > > > > > > > new_crtc_state);
> > > > > > > >  
> > > > > > > >  claimed:
> > > > > > > >         DRM_DEBUG_KMS("[CRTC:%d:%s] Slave is enabled as normal 
> > > > > > > > CRTC, but "
> > > > > > > > @@ -16531,7 +16704,7 @@ intel_legacy_cursor_update(struct 
> > > > > > > > drm_plane *_plane,
> > > > > > > >         new_plane_state->uapi.crtc_w = crtc_w;
> > > > > > > >         new_plane_state->uapi.crtc_h = crtc_h;
> > > > > > > >  
> > > > > > > > -       intel_plane_copy_uapi_to_hw_state(new_plane_state, 
> > > > > > > > new_plane_state);
> > > > > > > > +       intel_plane_copy_uapi_to_hw_state(new_crtc_state, 
> > > > > > > > new_plane_state, new_plane_state);
> > > > > > > >  
> > > > > > > >         ret = intel_plane_atomic_check_with_state(crtc_state, 
> > > > > > > > new_crtc_state,
> > > > > > > >                                                   
> > > > > > > > old_plane_state, new_plane_state);
> > > > > > > > diff --git a/drivers/gpu/drm/i915/display/intel_display.h 
> > > > > > > > b/drivers/gpu/drm/i915/display/intel_display.h
> > > > > > > > index e890c8fb779b..78010ee364f3 100644
> > > > > > > > --- a/drivers/gpu/drm/i915/display/intel_display.h
> > > > > > > > +++ b/drivers/gpu/drm/i915/display/intel_display.h
> > > > > > > > @@ -467,12 +467,20 @@ enum phy_fia {
> > > > > > > >                 for_each_if(crtc)
> > > > > > > >  
> > > > > > > >  #define intel_atomic_crtc_state_for_each_plane_state( \
> > > > > > > > -                 plane, plane_state, \
> > > > > > > > -                 crtc_state) \
> > > > > > > > -       
> > > > > > > > for_each_intel_plane_mask(((crtc_state)->uapi.state->dev), 
> > > > > > > > (plane), \
> > > > > > > > -                               
> > > > > > > > ((crtc_state)->uapi.plane_mask)) \
> > > > > > > > -               for_each_if ((plane_state = \
> > > > > > > > -                             
> > > > > > > > to_intel_plane_state(__drm_atomic_get_current_plane_state((crtc_state)->uapi.state,
> > > > > > > >  &plane->base))))
> > > > > > > > +       plane, iter, plane_state, \
> > > > > > > > +       crtc_state) \
> > > > > > > > +       
> > > > > > > > for_each_intel_plane_mask(((crtc_state)->uapi.state->dev), 
> > > > > > > > (iter), \
> > > > > > > > +                                 
> > > > > > > > (((crtc_state)->bigjoiner_slave ?     \
> > > > > > > > +                                   
> > > > > > > > intel_atomic_get_new_crtc_state(    \
> > > > > > > > +                                           
> > > > > > > > to_intel_atomic_state((crtc_state)->uapi.state), \
> > > > > > > > +                                           
> > > > > > > > (crtc_state)->bigjoiner_linked_crtc) : \
> > > > > > > > +                                   
> > > > > > > > (crtc_state))->uapi.plane_mask))    \
> > > > > > > > +       for_each_if ((((plane_state) = \
> > > > > > > > +                      
> > > > > > > > to_intel_plane_state(__drm_atomic_get_current_plane_state((crtc_state)->uapi.state,
> > > > > > > >  &iter->base))), \
> > > > > > > > +                     ((plane) = (plane_state)->bigjoiner_slave 
> > > > > > > > ? (plane_state)->bigjoiner_plane : (iter)), \
> > > > > > > > +                     ((plane_state) = 
> > > > > > > > (plane_state)->bigjoiner_slave ? \
> > > > > > > > +                      
> > > > > > > > to_intel_plane_state(__drm_atomic_get_current_plane_state((crtc_state)->uapi.state,
> > > > > > > >  &plane->base)) : \
> > > > > > > > +                      (plane_state))))
> > > > > > > >  
> > > > > > > >  #define for_each_new_intel_connector_in_state(__state, 
> > > > > > > > connector, new_connector_state, __i) \
> > > > > > > >         for ((__i) = 0; \
> > > > > > > > diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h 
> > > > > > > > b/drivers/gpu/drm/i915/display/intel_display_types.h
> > > > > > > > index 943709f192f7..6957eac140cd 100644
> > > > > > > > --- a/drivers/gpu/drm/i915/display/intel_display_types.h
> > > > > > > > +++ b/drivers/gpu/drm/i915/display/intel_display_types.h
> > > > > > > > @@ -575,6 +575,17 @@ struct intel_plane_state {
> > > > > > > >          */
> > > > > > > >         struct intel_plane *planar_linked_plane;
> > > > > > > >  
> > > > > > > > +       /*
> > > > > > > > +        * bigjoiner_plane:
> > > > > > > > +        *
> > > > > > > > +        * When 2 pipes are joined in a bigjoiner configuration,
> > > > > > > > +        * points to the same plane on the other pipe.
> > > > > > > > +        *
> > > > > > > > +        * bigjoiner_slave is set on the slave pipe.
> > > > > > > > +        */
> > > > > > > > +       struct intel_plane *bigjoiner_plane;
> > > > > > > > +       u32 bigjoiner_slave;
> > > > > > > > +
> > > > > > > >         /*
> > > > > > > >          * planar_slave:
> > > > > > > >          * If set don't update use the linked plane's state for 
> > > > > > > > updating
> > > > > > > > diff --git a/drivers/gpu/drm/i915/intel_pm.c 
> > > > > > > > b/drivers/gpu/drm/i915/intel_pm.c
> > > > > > > > index d1263ebd3811..a3e3ac429fd4 100644
> > > > > > > > --- a/drivers/gpu/drm/i915/intel_pm.c
> > > > > > > > +++ b/drivers/gpu/drm/i915/intel_pm.c
> > > > > > > > @@ -3150,7 +3150,7 @@ static int ilk_compute_pipe_wm(struct 
> > > > > > > > intel_crtc_state *crtc_state)
> > > > > > > >         struct drm_i915_private *dev_priv = 
> > > > > > > > to_i915(crtc_state->uapi.crtc->dev);
> > > > > > > >         struct intel_crtc *crtc = 
> > > > > > > > to_intel_crtc(crtc_state->uapi.crtc);
> > > > > > > >         struct intel_pipe_wm *pipe_wm;
> > > > > > > > -       struct intel_plane *plane;
> > > > > > > > +       struct intel_plane *plane, *iter;
> > > > > > > >         const struct intel_plane_state *plane_state;
> > > > > > > >         const struct intel_plane_state *pristate = NULL;
> > > > > > > >         const struct intel_plane_state *sprstate = NULL;
> > > > > > > > @@ -3160,7 +3160,7 @@ static int ilk_compute_pipe_wm(struct 
> > > > > > > > intel_crtc_state *crtc_state)
> > > > > > > >  
> > > > > > > >         pipe_wm = &crtc_state->wm.ilk.optimal;
> > > > > > > >  
> > > > > > > > -       intel_atomic_crtc_state_for_each_plane_state(plane, 
> > > > > > > > plane_state, crtc_state) {
> > > > > > > > +       intel_atomic_crtc_state_for_each_plane_state(plane, 
> > > > > > > > iter, plane_state, crtc_state) {
> > > > > > > >                 if (plane->base.type == DRM_PLANE_TYPE_PRIMARY)
> > > > > > > >                         pristate = plane_state;
> > > > > > > >                 else if (plane->base.type == 
> > > > > > > > DRM_PLANE_TYPE_OVERLAY)
> > > > > > > > @@ -3879,7 +3879,7 @@ static bool 
> > > > > > > > skl_crtc_can_enable_sagv(const struct intel_crtc_state 
> > > > > > > > *crtc_state)
> > > > > > > >  {
> > > > > > > >         struct intel_crtc *crtc = 
> > > > > > > > to_intel_crtc(crtc_state->uapi.crtc);
> > > > > > > >         struct drm_i915_private *dev_priv = 
> > > > > > > > to_i915(crtc->base.dev);
> > > > > > > > -       struct intel_plane *plane;
> > > > > > > > +       struct intel_plane *plane, *iter;
> > > > > > > >         const struct intel_plane_state *plane_state;
> > > > > > > >         int level, latency;
> > > > > > > >  
> > > > > > > > @@ -3892,7 +3892,7 @@ static bool 
> > > > > > > > skl_crtc_can_enable_sagv(const struct intel_crtc_state 
> > > > > > > > *crtc_state)
> > > > > > > >         if (crtc_state->hw.pipe_mode.flags & 
> > > > > > > > DRM_MODE_FLAG_INTERLACE)
> > > > > > > >                 return false;
> > > > > > > >  
> > > > > > > > -       intel_atomic_crtc_state_for_each_plane_state(plane, 
> > > > > > > > plane_state, crtc_state) {
> > > > > > > > +       intel_atomic_crtc_state_for_each_plane_state(plane, 
> > > > > > > > iter, plane_state, crtc_state) {
> > > > > > > >                 const struct skl_plane_wm *wm =
> > > > > > > >                         
> > > > > > > > &crtc_state->wm.skl.optimal.planes[plane->id];
> > > > > > > >  
> > > > > > > > @@ -4714,12 +4714,12 @@ skl_get_total_relative_data_rate(struct 
> > > > > > > > intel_crtc_state *crtc_state,
> > > > > > > >                                  u64 *plane_data_rate,
> > > > > > > >                                  u64 *uv_plane_data_rate)
> > > > > > > >  {
> > > > > > > > -       struct intel_plane *plane;
> > > > > > > > +       struct intel_plane *plane, *iter;
> > > > > > > >         const struct intel_plane_state *plane_state;
> > > > > > > >         u64 total_data_rate = 0;
> > > > > > > >  
> > > > > > > >         /* Calculate and cache data rate for each plane */
> > > > > > > > -       intel_atomic_crtc_state_for_each_plane_state(plane, 
> > > > > > > > plane_state, crtc_state) {
> > > > > > > > +       intel_atomic_crtc_state_for_each_plane_state(plane, 
> > > > > > > > iter, plane_state, crtc_state) {
> > > > > > > >                 enum plane_id plane_id = plane->id;
> > > > > > > >                 u64 rate;
> > > > > > > >  
> > > > > > > > @@ -4741,12 +4741,12 @@ static u64
> > > > > > > >  icl_get_total_relative_data_rate(struct intel_crtc_state 
> > > > > > > > *crtc_state,
> > > > > > > >                                  u64 *plane_data_rate)
> > > > > > > >  {
> > > > > > > > -       struct intel_plane *plane;
> > > > > > > > +       struct intel_plane *plane, *iter;
> > > > > > > >         const struct intel_plane_state *plane_state;
> > > > > > > >         u64 total_data_rate = 0;
> > > > > > > >  
> > > > > > > >         /* Calculate and cache data rate for each plane */
> > > > > > > > -       intel_atomic_crtc_state_for_each_plane_state(plane, 
> > > > > > > > plane_state, crtc_state) {
> > > > > > > > +       intel_atomic_crtc_state_for_each_plane_state(plane, 
> > > > > > > > iter, plane_state, crtc_state) {
> > > > > > > >                 enum plane_id plane_id = plane->id;
> > > > > > > >                 u64 rate;
> > > > > > > >  
> > > > > > > > @@ -5593,7 +5593,7 @@ static int skl_build_pipe_wm(struct 
> > > > > > > > intel_crtc_state *crtc_state)
> > > > > > > >  {
> > > > > > > >         struct drm_i915_private *dev_priv = 
> > > > > > > > to_i915(crtc_state->uapi.crtc->dev);
> > > > > > > >         struct skl_pipe_wm *pipe_wm = 
> > > > > > > > &crtc_state->wm.skl.optimal;
> > > > > > > > -       struct intel_plane *plane;
> > > > > > > > +       struct intel_plane *plane, *iter;
> > > > > > > >         const struct intel_plane_state *plane_state;
> > > > > > > >         int ret;
> > > > > > > >  
> > > > > > > > @@ -5603,7 +5603,7 @@ static int skl_build_pipe_wm(struct 
> > > > > > > > intel_crtc_state *crtc_state)
> > > > > > > >          */
> > > > > > > >         memset(pipe_wm->planes, 0, sizeof(pipe_wm->planes));
> > > > > > > >  
> > > > > > > > -       intel_atomic_crtc_state_for_each_plane_state(plane, 
> > > > > > > > plane_state,
> > > > > > > > +       intel_atomic_crtc_state_for_each_plane_state(plane, 
> > > > > > > > iter, plane_state,
> > > > > > > >                                                      
> > > > > > > > crtc_state) {
> > > > > > > >  
> > > > > > > >                 if (INTEL_GEN(dev_priv) >= 11)
> > > > > > > > -- 
> > > > > > > > 2.19.1
> > > > > > > > 
> > > > > > > > _______________________________________________
> > > > > > > > Intel-gfx mailing list
> > > > > > > > Intel-gfx@lists.freedesktop.org
> > > > > > > > https://lists.freedesktop.org/mailman/listinfo/intel-gfx
> > > > > > > 
> > > > > > > -- 
> > > > > > > Ville Syrjälä
> > > > > > > Intel
> > > > > 
> > > > > -- 
> > > > > Ville Syrjälä
> > > > > Intel
> > > 
> > > -- 
> > > Ville Syrjälä
> > > Intel
> 
> -- 
> Ville Syrjälä
> Intel
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