Re: [Intel-gfx] [PATCH v11 10/12] drm/i915: Link planes in a bigjoiner configuration, v3.

["Navare, Manasi" <manasi.d.navare@intel.com>]

@Ville, assuming no comments or concerns as a Ack By you on this

Manasi

On Mon, Oct 26, 2020 at 10:18:54PM +0200, Ville Syrjälä wrote:
> On Wed, Oct 21, 2020 at 10:42:21PM -0700, Manasi Navare wrote:
> > From: Maarten Lankhorst <maarten.lankhorst@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.
> > 
> > v6:
> > * Fix from_plane_state assignments (Manasi)
> > 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.lankhorst@linux.intel.com>
> > Signed-off-by: Manasi Navare <manasi.d.navare@intel.com>
> > ---
> >  .../gpu/drm/i915/display/intel_atomic_plane.c |  53 ++++-
> >  .../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(+), 40 deletions(-)
> > 
> > diff --git a/drivers/gpu/drm/i915/display/intel_atomic_plane.c b/drivers/gpu/drm/i915/display/intel_atomic_plane.c
> > index 3334ff253600..5df928f8f322 100644
> > --- a/drivers/gpu/drm/i915/display/intel_atomic_plane.c
> > +++ b/drivers/gpu/drm/i915/display/intel_atomic_plane.c
> > @@ -246,12 +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);
> >  
> > -	plane_state->hw.crtc = from_plane_state->uapi.crtc;
> > +	if (from_plane_state->uapi.crtc)
> > +		plane_state->hw.crtc = crtc_state->uapi.crtc;
> > +	else
> > +		plane_state->hw.crtc = NULL;
> > +
> >  	plane_state->hw.fb = from_plane_state->uapi.fb;
> >  	if (plane_state->hw.fb)
> >  		drm_framebuffer_get(plane_state->hw.fb);
> > @@ -320,15 +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;
> >  }
> >  
> > @@ -339,18 +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 c0715a3ea47b..579cccc1fd91 100644
> > --- a/drivers/gpu/drm/i915/display/intel_display.c
> > +++ b/drivers/gpu/drm/i915/display/intel_display.c
> > @@ -3718,7 +3718,7 @@ 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);
> >  
> > @@ -12801,26 +12801,180 @@ 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;
> 
> Why would we even need this bigjoiner stuff in the planes? AFAICS about
> the only thing we should need is someting like
> 
> for_each_plane_on_master()
> 	add_same_plane_on_slave()
> 
> somewhere before we do the plane->check() stuff. I guess start
> of intel_atomic_check_planes() could be the right spot.
> 
> > +	}
> > +	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.
> > +	 *
> > +	 * 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;
> >  
> > -		linked_plane_state = intel_atomic_get_plane_state(state, linked);
> > -		if (IS_ERR(linked_plane_state))
> > -			return PTR_ERR(linked_plane_state);
> > +			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_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;
> > @@ -12860,6 +13014,7 @@ 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)))
> > @@ -12903,7 +13058,14 @@ 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;
> >  
> > @@ -15253,6 +15415,7 @@ 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) {
> > @@ -15263,6 +15426,12 @@ 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;
> >  
> > @@ -15287,7 +15456,11 @@ 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 "
> > @@ -16902,7 +17075,7 @@ 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 4f8dee9dfb4d..73f495bba141 100644
> > --- a/drivers/gpu/drm/i915/display/intel_display.h
> > +++ b/drivers/gpu/drm/i915/display/intel_display.h
> > @@ -468,12 +468,20 @@ 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 d82ba1b9d8ef..69e6b0dc03a2 100644
> > --- a/drivers/gpu/drm/i915/display/intel_display_types.h
> > +++ b/drivers/gpu/drm/i915/display/intel_display_types.h
> > @@ -593,6 +593,17 @@ 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 18e52763dfec..8400e53f3f94 100644
> > --- a/drivers/gpu/drm/i915/intel_pm.c
> > +++ b/drivers/gpu/drm/i915/intel_pm.c
> > @@ -3144,7 +3144,7 @@ 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;
> > @@ -3154,7 +3154,7 @@ 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)
> > @@ -3873,7 +3873,7 @@ 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;
> >  
> > @@ -3886,7 +3886,7 @@ 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];
> >  
> > @@ -4708,12 +4708,12 @@ 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;
> >  
> > @@ -4735,12 +4735,12 @@ 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;
> >  
> > @@ -5587,7 +5587,7 @@ 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;
> >  
> > @@ -5597,7 +5597,7 @@ 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
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