Re: [PATCH 10/18] drm/i915: Extract per-platform plane->check() functions

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On Thu, 2018-07-19 at 21:22 +0300, Ville Syrjala wrote:
> From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> 
> Split up intel_check_primary_plane() and intel_check_sprite_plane()
> into per-platform variants. This way we can get a unified behaviour
> between the SKL universal planes, and we stop checking for non-SKL
> specific scaling limits for the "sprite" planes. And we now get
> a natural place where to add more plarform specific checks.
> 
> Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> ---
>  drivers/gpu/drm/i915/intel_atomic_plane.c |   2 +-
>  drivers/gpu/drm/i915/intel_display.c      | 123 +++++-------
>  drivers/gpu/drm/i915/intel_drv.h          |  13 +-
>  drivers/gpu/drm/i915/intel_sprite.c       | 303 +++++++++++++++++++-
> ----------
>  4 files changed, 249 insertions(+), 192 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_atomic_plane.c
> b/drivers/gpu/drm/i915/intel_atomic_plane.c
> index dcba645cabb8..eddcdd6e4b3b 100644
> --- a/drivers/gpu/drm/i915/intel_atomic_plane.c
> +++ b/drivers/gpu/drm/i915/intel_atomic_plane.c
> @@ -159,7 +159,7 @@ int intel_plane_atomic_check_with_state(const
> struct intel_crtc_state *old_crtc_
>  	}
>  
>  	intel_state->base.visible = false;
> -	ret = intel_plane->check_plane(intel_plane, crtc_state,
> intel_state);
> +	ret = intel_plane->check_plane(crtc_state, intel_state);
>  	if (ret)
>  		return ret;
>  
> diff --git a/drivers/gpu/drm/i915/intel_display.c
> b/drivers/gpu/drm/i915/intel_display.c
> index fdc5bedc5135..9b9eaeda15dd 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -3350,6 +3350,36 @@ int i9xx_check_plane_surface(struct
> intel_plane_state *plane_state)
>  	return 0;
>  }
>  
> +static int
> +i9xx_plane_check(struct intel_crtc_state *crtc_state,
> +		 struct intel_plane_state *plane_state)
> +{
> +	int ret;
> +
> +	ret = drm_atomic_helper_check_plane_state(&plane_state->base,
> +						  &crtc_state->base,
> +						  DRM_PLANE_HELPER_NO_S
> CALING,
> +						  DRM_PLANE_HELPER_NO_S
> CALING,
> +						  false, true);
> +	if (ret)
> +		return ret;
> +
> +	if (!plane_state->base.visible)
> +		return 0;
> +
> +	ret = intel_plane_check_src_coordinates(plane_state);
> +	if (ret)
> +		return ret;
> +
> +	ret = i9xx_check_plane_surface(plane_state);
> +	if (ret)
> +		return ret;
> +
> +	plane_state->ctl = i9xx_plane_ctl(crtc_state, plane_state);
> +
> +	return 0;
> +}
> +
>  static void i9xx_update_plane(struct intel_plane *plane,
>  			      const struct intel_crtc_state
> *crtc_state,
>  			      const struct intel_plane_state
> *plane_state)
> @@ -9680,6 +9710,11 @@ static int intel_check_cursor(struct
> intel_crtc_state *crtc_state,
>  	u32 offset;
>  	int ret;
>  
> +	if (fb && fb->modifier != DRM_FORMAT_MOD_LINEAR) {
> +		DRM_DEBUG_KMS("cursor cannot be tiled\n");
> +		return -EINVAL;
> +	}
> +
>  	ret = drm_atomic_helper_check_plane_state(&plane_state->base,
>  						  &crtc_state->base,
>  						  DRM_PLANE_HELPER_NO_S
> CALING,
> @@ -9688,13 +9723,12 @@ static int intel_check_cursor(struct
> intel_crtc_state *crtc_state,
>  	if (ret)
>  		return ret;
>  
> -	if (!fb)
> +	if (!plane_state->base.visible)
>  		return 0;
>  
> -	if (fb->modifier != DRM_FORMAT_MOD_LINEAR) {
> -		DRM_DEBUG_KMS("cursor cannot be tiled\n");
> -		return -EINVAL;
> -	}
> +	ret = intel_plane_check_src_coordinates(plane_state);
> +	if (ret)
> +		return ret;
>  
>  	intel_fill_fb_ggtt_view(&plane_state->view, fb, rotation);
>  	plane_state->color_plane[0].stride = intel_fb_pitch(fb, 0,
> rotation);
> @@ -9744,8 +9778,7 @@ static bool i845_cursor_size_ok(const struct
> intel_plane_state *plane_state)
>  	return intel_cursor_size_ok(plane_state) && IS_ALIGNED(width,
> 64);
>  }
>  
> -static int i845_check_cursor(struct intel_plane *plane,
> -			     struct intel_crtc_state *crtc_state,
> +static int i845_check_cursor(struct intel_crtc_state *crtc_state,
>  			     struct intel_plane_state *plane_state)

You are dropping struct intel_plane *plane from check_plane and in
skl_max_scale(), I think it is a good thing to do but would be better
do it in a previous patch and leave this one just extracting
check_plane().

>  {
>  	const struct drm_framebuffer *fb = plane_state->base.fb;
> @@ -9943,10 +9976,10 @@ static bool i9xx_cursor_size_ok(const struct
> intel_plane_state *plane_state)
>  	return true;
>  }
>  
> -static int i9xx_check_cursor(struct intel_plane *plane,
> -			     struct intel_crtc_state *crtc_state,
> +static int i9xx_check_cursor(struct intel_crtc_state *crtc_state,
>  			     struct intel_plane_state *plane_state)
>  {
> +	struct intel_plane *plane = to_intel_plane(plane_state-
> >base.plane);
>  	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
>  	const struct drm_framebuffer *fb = plane_state->base.fb;
>  	enum pipe pipe = plane->pipe;
> @@ -13193,19 +13226,17 @@ intel_cleanup_plane_fb(struct drm_plane
> *plane,
>  }
>  
>  int
> -skl_max_scale(struct intel_crtc *intel_crtc,
> -	      struct intel_crtc_state *crtc_state,
> -	      uint32_t pixel_format)
> +skl_max_scale(const struct intel_crtc_state *crtc_state,
> +	      u32 pixel_format)
>  {
> -	struct drm_i915_private *dev_priv;
> +	struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
> +	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
>  	int max_scale, mult;
>  	int crtc_clock, max_dotclk, tmpclk1, tmpclk2;
>  
> -	if (!intel_crtc || !crtc_state->base.enable)
> +	if (!crtc_state->base.enable)
>  		return DRM_PLANE_HELPER_NO_SCALING;
>  
> -	dev_priv = to_i915(intel_crtc->base.dev);
> -
>  	crtc_clock = crtc_state->base.adjusted_mode.crtc_clock;
>  	max_dotclk = to_intel_atomic_state(crtc_state->base.state)-
> >cdclk.logical.cdclk;
>  
> @@ -13229,61 +13260,6 @@ skl_max_scale(struct intel_crtc *intel_crtc,
>  	return max_scale;
>  }
>  
> -static int
> -intel_check_primary_plane(struct intel_plane *plane,
> -			  struct intel_crtc_state *crtc_state,
> -			  struct intel_plane_state *state)
> -{
> -	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
> -	struct drm_crtc *crtc = state->base.crtc;
> -	int min_scale = DRM_PLANE_HELPER_NO_SCALING;
> -	int max_scale = DRM_PLANE_HELPER_NO_SCALING;
> -	bool can_position = false;
> -	int ret;
> -	uint32_t pixel_format = 0;
> -
> -	if (INTEL_GEN(dev_priv) >= 9) {
> -		/* use scaler when colorkey is not required */
> -		if (!state->ckey.flags) {
> -			min_scale = 1;
> -			if (state->base.fb)
> -				pixel_format = state->base.fb->format-
> >format;
> -			max_scale = skl_max_scale(to_intel_crtc(crtc),
> -						  crtc_state,
> pixel_format);
> -		}
> -		can_position = true;
> -	}
> -
> -	ret = drm_atomic_helper_check_plane_state(&state->base,
> -						  &crtc_state->base,
> -						  min_scale, max_scale,
> -						  can_position, true);
> -	if (ret)
> -		return ret;
> -
> -	if (!state->base.fb)
> -		return 0;
> -
> -	if (INTEL_GEN(dev_priv) >= 9) {
> -		ret = skl_check_plane_surface(crtc_state, state);
> -		if (ret)
> -			return ret;
> -
> -		state->ctl = skl_plane_ctl(crtc_state, state);
> -	} else {
> -		ret = i9xx_check_plane_surface(state);
> -		if (ret)
> -			return ret;
> -
> -		state->ctl = i9xx_plane_ctl(crtc_state, state);
> -	}
> -
> -	if (INTEL_GEN(dev_priv) >= 10 || IS_GEMINILAKE(dev_priv))
> -		state->color_ctl = glk_plane_color_ctl(crtc_state,
> state);
> -
> -	return 0;
> -}
> -
>  static void intel_begin_crtc_commit(struct drm_crtc *crtc,
>  				    struct drm_crtc_state
> *old_crtc_state)
>  {
> @@ -13736,8 +13712,6 @@ intel_primary_plane_create(struct
> drm_i915_private *dev_priv, enum pipe pipe)
>  		fbc->possible_framebuffer_bits |= primary-
> >frontbuffer_bit;
>  	}
>  
> -	primary->check_plane = intel_check_primary_plane;
> -
>  	if (INTEL_GEN(dev_priv) >= 9) {
>  		primary->has_ccs = skl_plane_has_ccs(dev_priv, pipe,
>  						     PLANE_PRIMARY);
> @@ -13759,6 +13733,7 @@ intel_primary_plane_create(struct
> drm_i915_private *dev_priv, enum pipe pipe)
>  		primary->update_plane = skl_update_plane;
>  		primary->disable_plane = skl_disable_plane;
>  		primary->get_hw_state = skl_plane_get_hw_state;
> +		primary->check_plane = skl_plane_check;
>  
>  		plane_funcs = &skl_plane_funcs;
>  	} else if (INTEL_GEN(dev_priv) >= 4) {
> @@ -13770,6 +13745,7 @@ intel_primary_plane_create(struct
> drm_i915_private *dev_priv, enum pipe pipe)
>  		primary->update_plane = i9xx_update_plane;
>  		primary->disable_plane = i9xx_disable_plane;
>  		primary->get_hw_state = i9xx_plane_get_hw_state;
> +		primary->check_plane = i9xx_plane_check;
>  
>  		plane_funcs = &i965_plane_funcs;
>  	} else {
> @@ -13781,6 +13757,7 @@ intel_primary_plane_create(struct
> drm_i915_private *dev_priv, enum pipe pipe)
>  		primary->update_plane = i9xx_update_plane;
>  		primary->disable_plane = i9xx_disable_plane;
>  		primary->get_hw_state = i9xx_plane_get_hw_state;
> +		primary->check_plane = i9xx_plane_check;
>  
>  		plane_funcs = &i8xx_plane_funcs;
>  	}
> diff --git a/drivers/gpu/drm/i915/intel_drv.h
> b/drivers/gpu/drm/i915/intel_drv.h
> index c6c782e14897..6d57c6a508d4 100644
> --- a/drivers/gpu/drm/i915/intel_drv.h
> +++ b/drivers/gpu/drm/i915/intel_drv.h
> @@ -973,9 +973,8 @@ struct intel_plane {
>  	void (*disable_plane)(struct intel_plane *plane,
>  			      struct intel_crtc *crtc);
>  	bool (*get_hw_state)(struct intel_plane *plane, enum pipe
> *pipe);
> -	int (*check_plane)(struct intel_plane *plane,
> -			   struct intel_crtc_state *crtc_state,
> -			   struct intel_plane_state *state);
> +	int (*check_plane)(struct intel_crtc_state *crtc_state,
> +			   struct intel_plane_state *plane_state);
>  };
>  
>  struct intel_watermark_params {
> @@ -1637,8 +1636,8 @@ void intel_crtc_arm_fifo_underrun(struct
> intel_crtc *crtc,
>  
>  u16 skl_scaler_calc_phase(int sub, bool chroma_center);
>  int skl_update_scaler_crtc(struct intel_crtc_state *crtc_state);
> -int skl_max_scale(struct intel_crtc *crtc, struct intel_crtc_state
> *crtc_state,
> -		  uint32_t pixel_format);
> +int skl_max_scale(const struct intel_crtc_state *crtc_state,
> +		  u32 pixel_format);
>  
>  static inline u32 intel_plane_ggtt_offset(const struct
> intel_plane_state *state)
>  {
> @@ -2112,7 +2111,9 @@ bool skl_plane_has_planar(struct
> drm_i915_private *dev_priv,
>  unsigned int skl_plane_max_stride(struct intel_plane *plane,
>  				  u32 pixel_format, u64 modifier,
>  				  unsigned int rotation);
> -
> +int skl_plane_check(struct intel_crtc_state *crtc_state,
> +		    struct intel_plane_state *plane_state);
> +int intel_plane_check_src_coordinates(struct intel_plane_state
> *plane_state);
>  
>  /* intel_tv.c */
>  void intel_tv_init(struct drm_i915_private *dev_priv);
> diff --git a/drivers/gpu/drm/i915/intel_sprite.c
> b/drivers/gpu/drm/i915/intel_sprite.c
> index 0d3931b8a981..36e150885897 100644
> --- a/drivers/gpu/drm/i915/intel_sprite.c
> +++ b/drivers/gpu/drm/i915/intel_sprite.c
> @@ -228,6 +228,39 @@ void intel_pipe_update_end(struct
> intel_crtc_state *new_crtc_state)
>  #endif
>  }
>  
> +int intel_plane_check_src_coordinates(struct intel_plane_state
> *plane_state)
> +{
> +	const struct drm_framebuffer *fb = plane_state->base.fb;
> +	struct drm_rect *src = &plane_state->base.src;
> +	u32 src_x, src_y, src_w, src_h;
> +
> +	/*
> +	 * Hardware doesn't handle subpixel coordinates.
> +	 * Adjust to (macro)pixel boundary, but be careful not to
> +	 * increase the source viewport size, because that could
> +	 * push the downscaling factor out of bounds.
> +	 */
> +	src_x = src->x1 >> 16;
> +	src_w = drm_rect_width(src) >> 16;
> +	src_y = src->y1 >> 16;
> +	src_h = drm_rect_height(src) >> 16;
> +
> +	src->x1 = src_x << 16;
> +	src->x2 = (src_x + src_w) << 16;
> +	src->y1 = src_y << 16;
> +	src->y2 = (src_y + src_h) << 16;
> +
> +	if (fb->format->is_yuv &&
> +	    fb->format->format != DRM_FORMAT_NV12 &&
> +	    (src_x & 1 || src_w & 1)) {
> +		DRM_DEBUG_KMS("src x/w (%u, %u) must be a multiple of 2
> for YUV planes\n",
> +			      src_x, src_w);
> +		return -EINVAL;
> +	}
> +
> +	return 0;
> +}
> +
>  unsigned int
>  skl_plane_max_stride(struct intel_plane *plane,
>  		     u32 pixel_format, u64 modifier,
> @@ -983,146 +1016,189 @@ g4x_plane_get_hw_state(struct intel_plane
> *plane,
>  }
>  
>  static int
> -intel_check_sprite_plane(struct intel_plane *plane,
> -			 struct intel_crtc_state *crtc_state,
> -			 struct intel_plane_state *state)
> +g4x_sprite_check_scaling(struct intel_crtc_state *crtc_state,
> +			 struct intel_plane_state *plane_state)
>  {
> -	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
> -	struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
> -	struct drm_framebuffer *fb = state->base.fb;
> -	int max_scale, min_scale;
> -	int ret;
> -	uint32_t pixel_format = 0;
> -
> -	if (!fb) {
> -		state->base.visible = false;
> +	const struct drm_framebuffer *fb = plane_state->base.fb;
> +	const struct drm_rect *src = &plane_state->base.src;
> +	const struct drm_rect *dst = &plane_state->base.dst;
> +	int src_x, src_y, src_w, src_h, crtc_w, crtc_h;
> +	const struct drm_display_mode *adjusted_mode =
> +		&crtc_state->base.adjusted_mode;
> +	unsigned int cpp = fb->format->cpp[0];
> +	unsigned int width_bytes;
> +	int min_width, min_height;
> +
> +	crtc_w = drm_rect_width(dst);
> +	crtc_h = drm_rect_height(dst);
> +
> +	src_x = src->x1 >> 16;
> +	src_y = src->y1 >> 16;
> +	src_w = drm_rect_width(src) >> 16;
> +	src_h = drm_rect_height(src) >> 16;
> +
> +	if (src_w == crtc_w && src_h == crtc_h)
>  		return 0;
> +
> +	min_width = 3;
> +
> +	if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) {
> +		if (src_h & 1) {
> +			DRM_DEBUG_KMS("Source height must be even with
> interlaced modes\n");
> +			return -EINVAL;
> +		}
> +		min_height = 6;
> +	} else {
> +		min_height = 3;
>  	}
>  
> -	/* Don't modify another pipe's plane */
> -	if (plane->pipe != crtc->pipe) {
> -		DRM_DEBUG_KMS("Wrong plane <-> crtc mapping\n");
> +	width_bytes = ((src_x * cpp) & 63) + src_w * cpp;
> +
> +	if (src_w < min_width || src_h < min_height ||
> +	    src_w > 2048 || src_h > 2048) {
> +		DRM_DEBUG_KMS("Source dimensions (%dx%d) exceed
> hardware limits (%dx%d - %dx%d)\n",
> +			      src_w, src_h, min_width, min_height,
> 2048, 2048);
>  		return -EINVAL;
>  	}
>  
> -	/* FIXME check all gen limits */
> -	if (fb->width < 3 || fb->height < 3 ||
> -	    fb->pitches[0] > plane->max_stride(plane, fb->format-
> >format,
> -					       fb->modifier,
> DRM_MODE_ROTATE_0)) {
> -		DRM_DEBUG_KMS("Unsuitable framebuffer for plane\n");
> +	if (width_bytes > 4096) {
> +		DRM_DEBUG_KMS("Fetch width (%d) exceeds hardware max
> with scaling (%u)\n",
> +			      width_bytes, 4096);
>  		return -EINVAL;
>  	}
>  
> -	if (INTEL_GEN(dev_priv) >= 9) {
> -		if (state->base.fb)
> -			pixel_format = state->base.fb->format->format;
> -		/* use scaler when colorkey is not required */
> -		if (!state->ckey.flags) {
> -			min_scale = 1;
> -			max_scale =
> -				skl_max_scale(crtc, crtc_state,
> pixel_format);
> -		} else {
> -			min_scale = DRM_PLANE_HELPER_NO_SCALING;
> -			max_scale = DRM_PLANE_HELPER_NO_SCALING;
> -		}
> +	if (width_bytes > 4096 || fb->pitches[0] > 4096) {
> +		DRM_DEBUG_KMS("Stride (%u) exceeds hardware max with
> scaling (%u)\n",
> +			      fb->pitches[0], 4096);
> +		return -EINVAL;
> +	}
> +
> +	return 0;
> +}
> +
> +static int
> +g4x_sprite_check(struct intel_crtc_state *crtc_state,
> +		 struct intel_plane_state *plane_state)
> +{
> +	struct intel_plane *plane = to_intel_plane(plane_state-
> >base.plane);
> +	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
> +	int max_scale, min_scale;
> +	int ret;
> +
> +	if (INTEL_GEN(dev_priv) < 7) {
> +		min_scale = 1;
> +		max_scale = 16 << 16;
> +	} else if (IS_IVYBRIDGE(dev_priv)) {
> +		min_scale = 1;
> +		max_scale = 2 << 16;
>  	} else {
> -		if (INTEL_GEN(dev_priv) < 7) {
> -			min_scale = 1;
> -			max_scale = 16 << 16;
> -		} else if (IS_IVYBRIDGE(dev_priv)) {
> -			min_scale = 1;
> -			max_scale = 2 << 16;
> -		} else {
> -			min_scale = DRM_PLANE_HELPER_NO_SCALING;
> -			max_scale = DRM_PLANE_HELPER_NO_SCALING;
> -		}
> +		min_scale = DRM_PLANE_HELPER_NO_SCALING;
> +		max_scale = DRM_PLANE_HELPER_NO_SCALING;
>  	}
>  
> -	ret = drm_atomic_helper_check_plane_state(&state->base,
> +	ret = drm_atomic_helper_check_plane_state(&plane_state->base,
>  						  &crtc_state->base,
>  						  min_scale, max_scale,
>  						  true, true);
>  	if (ret)
>  		return ret;
>  
> -	if (state->base.visible) {
> -		struct drm_rect *src = &state->base.src;
> -		struct drm_rect *dst = &state->base.dst;
> -		unsigned int crtc_w = drm_rect_width(dst);
> -		unsigned int crtc_h = drm_rect_height(dst);
> -		uint32_t src_x, src_y, src_w, src_h;
> +	if (!plane_state->base.visible)
> +		return 0;
>  
> -		/*
> -		 * Hardware doesn't handle subpixel coordinates.
> -		 * Adjust to (macro)pixel boundary, but be careful not
> to
> -		 * increase the source viewport size, because that
> could
> -		 * push the downscaling factor out of bounds.
> -		 */
> -		src_x = src->x1 >> 16;
> -		src_w = drm_rect_width(src) >> 16;
> -		src_y = src->y1 >> 16;
> -		src_h = drm_rect_height(src) >> 16;
> -
> -		src->x1 = src_x << 16;
> -		src->x2 = (src_x + src_w) << 16;
> -		src->y1 = src_y << 16;
> -		src->y2 = (src_y + src_h) << 16;
> -
> -		if (fb->format->is_yuv &&
> -    		    fb->format->format != DRM_FORMAT_NV12 &&
> -		    (src_x % 2 || src_w % 2)) {
> -			DRM_DEBUG_KMS("src x/w (%u, %u) must be a
> multiple of 2 for YUV planes\n",
> -				      src_x, src_w);
> -			return -EINVAL;
> -		}
> +	ret = intel_plane_check_src_coordinates(plane_state);
> +	if (ret)
> +		return ret;
>  
> -		/* Check size restrictions when scaling */
> -		if (src_w != crtc_w || src_h != crtc_h) {
> -			unsigned int width_bytes;
> -			int cpp = fb->format->cpp[0];
> -
> -			width_bytes = ((src_x * cpp) & 63) + src_w *
> cpp;
> -
> -			/* FIXME interlacing min height is 6 */
> -			if (INTEL_GEN(dev_priv) < 9 && (
> -			     src_w < 3 || src_h < 3 ||
> -			     src_w > 2048 || src_h > 2048 ||
> -			     crtc_w < 3 || crtc_h < 3 ||
> -			     width_bytes > 4096 || fb->pitches[0] >
> 4096)) {
> -				DRM_DEBUG_KMS("Source dimensions exceed
> hardware limits\n");
> -				return -EINVAL;
> -			}
> -		}
> -	}
> +	ret = g4x_sprite_check_scaling(crtc_state, plane_state);
> +	if (ret)
> +		return ret;
>  
> -	if (INTEL_GEN(dev_priv) >= 9) {
> -		ret = skl_check_plane_surface(crtc_state, state);
> -		if (ret)
> -			return ret;
> +	ret = i9xx_check_plane_surface(plane_state);
> +	if (ret)
> +		return ret;
>  
> -		state->ctl = skl_plane_ctl(crtc_state, state);
> -	} else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
> {
> -		ret = i9xx_check_plane_surface(state);
> -		if (ret)
> -			return ret;
> +	if (INTEL_GEN(dev_priv) >= 7)
> +		plane_state->ctl = ivb_sprite_ctl(crtc_state,
> plane_state);
> +	else
> +		plane_state->ctl = g4x_sprite_ctl(crtc_state,
> plane_state);
>  
> -		state->ctl = vlv_sprite_ctl(crtc_state, state);
> -	} else if (INTEL_GEN(dev_priv) >= 7) {
> -		ret = i9xx_check_plane_surface(state);
> -		if (ret)
> -			return ret;
> +	return 0;
> +}
>  
> -		state->ctl = ivb_sprite_ctl(crtc_state, state);
> -	} else {
> -		ret = i9xx_check_plane_surface(state);
> -		if (ret)
> -			return ret;
> +static int
> +vlv_sprite_check(struct intel_crtc_state *crtc_state,
> +		 struct intel_plane_state *plane_state)
> +{
> +	int ret;
> +
> +	ret = drm_atomic_helper_check_plane_state(&plane_state->base,
> +						  &crtc_state->base,
> +						  DRM_PLANE_HELPER_NO_S
> CALING,
> +						  DRM_PLANE_HELPER_NO_S
> CALING,
> +						  true, true);
> +	if (ret)
> +		return ret;
> +
> +	if (!plane_state->base.visible)
> +		return 0;
> +
> +	ret = intel_plane_check_src_coordinates(plane_state);
> +	if (ret)
> +		return ret;

Looks like it is missing a g4x_sprite_check_scaling() call for VLV/CHV.


Other than the 2 comments above:

Reviewed-by: José Roberto de Souza <jose.souza@xxxxxxxxx>

> +
> +	ret = i9xx_check_plane_surface(plane_state);
> +	if (ret)
> +		return ret;
> +
> +	plane_state->ctl = vlv_sprite_ctl(crtc_state, plane_state);
>  
> -		state->ctl = g4x_sprite_ctl(crtc_state, state);
> +	return 0;
> +}
> +
> +int skl_plane_check(struct intel_crtc_state *crtc_state,
> +		    struct intel_plane_state *plane_state)
> +{
> +	struct intel_plane *plane = to_intel_plane(plane_state-
> >base.plane);
> +	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
> +	int max_scale, min_scale;
> +	int ret;
> +
> +	/* use scaler when colorkey is not required */
> +	if (!plane_state->ckey.flags) {
> +		const struct drm_framebuffer *fb = plane_state-
> >base.fb;
> +
> +		min_scale = 1;
> +		max_scale = skl_max_scale(crtc_state,
> +					  fb ? fb->format->format : 0);
> +	} else {
> +		min_scale = DRM_PLANE_HELPER_NO_SCALING;
> +		max_scale = DRM_PLANE_HELPER_NO_SCALING;
>  	}
>  
> +	ret = drm_atomic_helper_check_plane_state(&plane_state->base,
> +						  &crtc_state->base,
> +						  min_scale, max_scale,
> +						  true, true);
> +	if (ret)
> +		return ret;
> +
> +	if (!plane_state->base.visible)
> +		return 0;
> +
> +	ret = intel_plane_check_src_coordinates(plane_state);
> +	if (ret)
> +		return ret;
> +
> +	ret = skl_check_plane_surface(crtc_state, plane_state);
> +	if (ret)
> +		return ret;
> +
> +	plane_state->ctl = skl_plane_ctl(crtc_state, plane_state);
> +
>  	if (INTEL_GEN(dev_priv) >= 10 || IS_GEMINILAKE(dev_priv))
> -		state->color_ctl = glk_plane_color_ctl(crtc_state,
> state);
> +		plane_state->color_ctl =
> glk_plane_color_ctl(crtc_state,
> +							     plane_stat
> e);
>  
>  	return 0;
>  }
> @@ -1559,6 +1635,7 @@ intel_sprite_plane_create(struct
> drm_i915_private *dev_priv,
>  		intel_plane->update_plane = skl_update_plane;
>  		intel_plane->disable_plane = skl_disable_plane;
>  		intel_plane->get_hw_state = skl_plane_get_hw_state;
> +		intel_plane->check_plane = skl_plane_check;
>  
>  		if (skl_plane_has_planar(dev_priv, pipe,
>  					 PLANE_SPRITE0 + plane)) {
> @@ -1580,6 +1657,7 @@ intel_sprite_plane_create(struct
> drm_i915_private *dev_priv,
>  		intel_plane->update_plane = vlv_update_plane;
>  		intel_plane->disable_plane = vlv_disable_plane;
>  		intel_plane->get_hw_state = vlv_plane_get_hw_state;
> +		intel_plane->check_plane = vlv_sprite_check;
>  
>  		plane_formats = vlv_plane_formats;
>  		num_plane_formats = ARRAY_SIZE(vlv_plane_formats);
> @@ -1591,6 +1669,7 @@ intel_sprite_plane_create(struct
> drm_i915_private *dev_priv,
>  		intel_plane->update_plane = ivb_update_plane;
>  		intel_plane->disable_plane = ivb_disable_plane;
>  		intel_plane->get_hw_state = ivb_plane_get_hw_state;
> +		intel_plane->check_plane = g4x_sprite_check;
>  
>  		plane_formats = snb_plane_formats;
>  		num_plane_formats = ARRAY_SIZE(snb_plane_formats);
> @@ -1602,6 +1681,7 @@ intel_sprite_plane_create(struct
> drm_i915_private *dev_priv,
>  		intel_plane->update_plane = g4x_update_plane;
>  		intel_plane->disable_plane = g4x_disable_plane;
>  		intel_plane->get_hw_state = g4x_plane_get_hw_state;
> +		intel_plane->check_plane = g4x_sprite_check;
>  
>  		modifiers = i9xx_plane_format_modifiers;
>  		if (IS_GEN6(dev_priv)) {
> @@ -1634,7 +1714,6 @@ intel_sprite_plane_create(struct
> drm_i915_private *dev_priv,
>  	intel_plane->i9xx_plane = plane;
>  	intel_plane->id = PLANE_SPRITE0 + plane;
>  	intel_plane->frontbuffer_bit = INTEL_FRONTBUFFER(pipe,
> intel_plane->id);
> -	intel_plane->check_plane = intel_check_sprite_plane;
>  
>  	possible_crtcs = (1 << pipe);
>  
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