[PATCH 08/19] drm/i915: Stop using drm_atomic_helper_check_planes()

[Lisovskiy, Stanislav]

On Mon, 2019-07-08 at 15:53 +0300, Ville Syrjala wrote:
> From: Ville Syrjälä <ville.syrjala at linux.intel.com>
> 
> We need to insert stuff between the plane and crtc .atomic_check()
> drm_atomic_helper_check_planes() doesn't allow us to do that so
> stop using it and hand roll the loops instead.
> 
> Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>


Reviewed-by: Stanislav Lisovskiy <stanislav.lisovskiy at intel.com>

> ---
>  .../gpu/drm/i915/display/intel_atomic_plane.c | 10 +---
>  .../gpu/drm/i915/display/intel_atomic_plane.h |  2 +
>  drivers/gpu/drm/i915/display/intel_display.c  | 57 +++++++++++++++
> ----
>  3 files changed, 50 insertions(+), 19 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_atomic_plane.c
> b/drivers/gpu/drm/i915/display/intel_atomic_plane.c
> index 7ff19b524f9d..d7493551b28c 100644
> --- a/drivers/gpu/drm/i915/display/intel_atomic_plane.c
> +++ b/drivers/gpu/drm/i915/display/intel_atomic_plane.c
> @@ -194,14 +194,11 @@ get_crtc_from_states(const struct
> intel_plane_state *old_plane_state,
>  	return NULL;
>  }
>  
> -static int intel_plane_atomic_check(struct drm_plane *_plane,
> -				    struct drm_plane_state
> *_new_plane_state)
> +int intel_plane_atomic_check(struct intel_atomic_state *state,
> +			     struct intel_plane *plane)
>  {
> -	struct intel_plane *plane = to_intel_plane(_plane);
> -	struct intel_atomic_state *state =
> -		to_intel_atomic_state(_new_plane_state->state);
>  	struct intel_plane_state *new_plane_state =
> -		to_intel_plane_state(_new_plane_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);
>  	struct intel_crtc *crtc =
> @@ -368,5 +365,4 @@ void i9xx_update_planes_on_crtc(struct
> intel_atomic_state *state,
>  const struct drm_plane_helper_funcs intel_plane_helper_funcs = {
>  	.prepare_fb = intel_prepare_plane_fb,
>  	.cleanup_fb = intel_cleanup_plane_fb,
> -	.atomic_check = intel_plane_atomic_check,
>  };
> diff --git a/drivers/gpu/drm/i915/display/intel_atomic_plane.h
> b/drivers/gpu/drm/i915/display/intel_atomic_plane.h
> index cb7ef4f9eafd..dc85af02e9b7 100644
> --- a/drivers/gpu/drm/i915/display/intel_atomic_plane.h
> +++ b/drivers/gpu/drm/i915/display/intel_atomic_plane.h
> @@ -41,6 +41,8 @@ int intel_plane_atomic_check_with_state(const
> struct intel_crtc_state *old_crtc_
>  					struct intel_crtc_state
> *crtc_state,
>  					const struct intel_plane_state
> *old_plane_state,
>  					struct intel_plane_state
> *intel_state);
> +int intel_plane_atomic_check(struct intel_atomic_state *state,
> +			     struct intel_plane *plane);
>  int intel_plane_atomic_calc_changes(const struct intel_crtc_state
> *old_crtc_state,
>  				    struct intel_crtc_state
> *crtc_state,
>  				    const struct intel_plane_state
> *old_plane_state,
> diff --git a/drivers/gpu/drm/i915/display/intel_display.c
> b/drivers/gpu/drm/i915/display/intel_display.c
> index 5635f2079e4c..5a42cbfa72c3 100644
> --- a/drivers/gpu/drm/i915/display/intel_display.c
> +++ b/drivers/gpu/drm/i915/display/intel_display.c
> @@ -11733,15 +11733,14 @@ static bool c8_planes_changed(const struct
> intel_crtc_state *new_crtc_state)
>  	return !old_crtc_state->c8_planes != !new_crtc_state-
> >c8_planes;
>  }
>  
> -static int intel_crtc_atomic_check(struct drm_crtc *_crtc,
> -				   struct drm_crtc_state *_crtc_state)
> +static int intel_crtc_atomic_check(struct intel_atomic_state *state,
> +				   struct intel_crtc *crtc)
>  {
> -	struct intel_crtc *crtc = to_intel_crtc(_crtc);
>  	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
>  	struct intel_crtc_state *crtc_state =
> -		to_intel_crtc_state(_crtc_state);
> -	int ret;
> +		intel_atomic_get_new_crtc_state(state, crtc);
>  	bool mode_changed = needs_modeset(crtc_state);
> +	int ret;
>  
>  	if (INTEL_GEN(dev_priv) < 5 && !IS_G4X(dev_priv) &&
>  	    mode_changed && !crtc_state->base.active)
> @@ -11813,10 +11812,6 @@ static int intel_crtc_atomic_check(struct
> drm_crtc *_crtc,
>  	return ret;
>  }
>  
> -static const struct drm_crtc_helper_funcs intel_helper_funcs = {
> -	.atomic_check = intel_crtc_atomic_check,
> -};
> -
>  static void intel_modeset_update_connector_atomic_state(struct
> drm_device *dev)
>  {
>  	struct intel_connector *connector;
> @@ -13457,6 +13452,42 @@ static void intel_crtc_check_fastset(const
> struct intel_crtc_state *old_crtc_sta
>  	new_crtc_state->has_drrs = old_crtc_state->has_drrs;
>  }
>  
> +static int intel_atomic_check_planes(struct intel_atomic_state
> *state)
> +{
> +	struct intel_plane_state *plane_state;
> +	struct intel_plane *plane;
> +	int i, ret;
> +
> +	for_each_new_intel_plane_in_state(state, plane, plane_state, i)
> {
> +		ret = intel_plane_atomic_check(state, plane);
> +		if (ret) {
> +			DRM_DEBUG_ATOMIC("[PLANE:%d:%s] atomic driver
> check failed\n",
> +					 plane->base.base.id, plane-
> >base.name);
> +			return ret;
> +		}
> +	}
> +
> +	return 0;
> +}
> +
> +static int intel_atomic_check_crtcs(struct intel_atomic_state
> *state)
> +{
> +	struct intel_crtc_state *crtc_state;
> +	struct intel_crtc *crtc;
> +	int i;
> +
> +	for_each_new_intel_crtc_in_state(state, crtc, crtc_state, i) {
> +		int ret = intel_crtc_atomic_check(state, crtc);
> +		if (ret) {
> +			DRM_DEBUG_ATOMIC("[CRTC:%d:%s] atomic driver
> check failed\n",
> +					 crtc->base.base.id, crtc-
> >base.name);
> +			return ret;
> +		}
> +	}
> +
> +	return 0;
> +}
> +
>  /**
>   * intel_atomic_check - validate state object
>   * @dev: drm device
> @@ -13520,7 +13551,11 @@ static int intel_atomic_check(struct
> drm_device *dev,
>  	if (ret)
>  		goto fail;
>  
> -	ret = drm_atomic_helper_check_planes(dev, &state->base);
> +	ret = intel_atomic_check_planes(state);
> +	if (ret)
> +		goto fail;
> +
> +	ret = intel_atomic_check_crtcs(state);
>  	if (ret)
>  		goto fail;
>  
> @@ -15051,8 +15086,6 @@ static int intel_crtc_init(struct
> drm_i915_private *dev_priv, enum pipe pipe)
>  		dev_priv->plane_to_crtc_mapping[i9xx_plane] =
> intel_crtc;
>  	}
>  
> -	drm_crtc_helper_add(&intel_crtc->base, &intel_helper_funcs);
> -
>  	intel_color_init(intel_crtc);
>  
>  	WARN_ON(drm_crtc_index(&intel_crtc->base) != intel_crtc->pipe);