[PATCH 10/13] drm/i915: Move skl plane fb related checks into a better place

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From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>

Move the skl+ specific framebuffer related checks from
intel_plane_atomic_check_with_state() into a new function
(skl_plane_check_fb()) which we'll simply call from the skl
plane->check() hook.

v2: Split out the Y/Yf+CCS vs. interlaced change (José)

Reviewed-by: José Roberto de Souza <jose.souza@xxxxxxxxx>
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
 drivers/gpu/drm/i915/intel_atomic_plane.c | 44 ---------------------
 drivers/gpu/drm/i915/intel_display.c      | 12 ------
 drivers/gpu/drm/i915/intel_sprite.c       | 66 +++++++++++++++++++++++++++++++
 3 files changed, 66 insertions(+), 56 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_atomic_plane.c b/drivers/gpu/drm/i915/intel_atomic_plane.c
index fa7df5fe154b..7c0873060934 100644
--- a/drivers/gpu/drm/i915/intel_atomic_plane.c
+++ b/drivers/gpu/drm/i915/intel_atomic_plane.c
@@ -116,40 +116,11 @@ int intel_plane_atomic_check_with_state(const struct intel_crtc_state *old_crtc_
 	struct drm_i915_private *dev_priv = to_i915(plane->dev);
 	struct drm_plane_state *state = &intel_state->base;
 	struct intel_plane *intel_plane = to_intel_plane(plane);
-	const struct drm_display_mode *adjusted_mode =
-		&crtc_state->base.adjusted_mode;
 	int ret;
 
 	if (!intel_state->base.crtc && !old_plane_state->base.crtc)
 		return 0;
 
-	if (state->fb && drm_rotation_90_or_270(state->rotation)) {
-		struct drm_format_name_buf format_name;
-
-		if (state->fb->modifier != I915_FORMAT_MOD_Y_TILED &&
-		    state->fb->modifier != I915_FORMAT_MOD_Yf_TILED) {
-			DRM_DEBUG_KMS("Y/Yf tiling required for 90/270!\n");
-			return -EINVAL;
-		}
-
-		/*
-		 * 90/270 is not allowed with RGB64 16:16:16:16,
-		 * RGB 16-bit 5:6:5, and Indexed 8-bit.
-		 * TBD: Add RGB64 case once its added in supported format list.
-		 */
-		switch (state->fb->format->format) {
-		case DRM_FORMAT_C8:
-		case DRM_FORMAT_RGB565:
-			DRM_DEBUG_KMS("Unsupported pixel format %s for 90/270!\n",
-			              drm_get_format_name(state->fb->format->format,
-			                                  &format_name));
-			return -EINVAL;
-
-		default:
-			break;
-		}
-	}
-
 	/* CHV ignores the mirror bit when the rotate bit is set :( */
 	if (IS_CHERRYVIEW(dev_priv) &&
 	    state->rotation & DRM_MODE_ROTATE_180 &&
@@ -163,21 +134,6 @@ int intel_plane_atomic_check_with_state(const struct intel_crtc_state *old_crtc_
 	if (ret)
 		return ret;
 
-	/*
-	 * Y-tiling is not supported in IF-ID Interlace mode in
-	 * GEN9 and above.
-	 */
-	if (state->fb && INTEL_GEN(dev_priv) >= 9 && crtc_state->base.enable &&
-	    adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) {
-		if (state->fb->modifier == I915_FORMAT_MOD_Y_TILED ||
-		    state->fb->modifier == I915_FORMAT_MOD_Yf_TILED ||
-		    state->fb->modifier == I915_FORMAT_MOD_Y_TILED_CCS ||
-		    state->fb->modifier == I915_FORMAT_MOD_Yf_TILED_CCS) {
-			DRM_DEBUG_KMS("Y/Yf tiling not supported in IF-ID mode\n");
-			return -EINVAL;
-		}
-	}
-
 	/* FIXME pre-g4x don't work like this */
 	if (state->visible)
 		crtc_state->active_planes |= BIT(intel_plane->id);
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index adbb8e6d8d39..a8072c78c170 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -3155,12 +3155,6 @@ static int skl_check_ccs_aux_surface(struct intel_plane_state *plane_state)
 	int y = src_y / vsub;
 	u32 offset;
 
-	if (plane_state->base.rotation & ~(DRM_MODE_ROTATE_0 | DRM_MODE_ROTATE_180)) {
-		DRM_DEBUG_KMS("RC support only with 0/180 degree rotation %x\n",
-			      plane_state->base.rotation);
-		return -EINVAL;
-	}
-
 	intel_add_fb_offsets(&x, &y, plane_state, 1);
 	offset = intel_plane_compute_aligned_offset(&x, &y, plane_state, 1);
 
@@ -3182,12 +3176,6 @@ int skl_check_plane_surface(const struct intel_crtc_state *crtc_state,
 	plane_state->color_plane[0].stride = intel_fb_pitch(fb, 0, rotation);
 	plane_state->color_plane[1].stride = intel_fb_pitch(fb, 1, rotation);
 
-	if (rotation & DRM_MODE_REFLECT_X &&
-	    fb->modifier == DRM_FORMAT_MOD_LINEAR) {
-		DRM_DEBUG_KMS("horizontal flip is not supported with linear surface formats\n");
-		return -EINVAL;
-	}
-
 	if (!plane_state->base.visible)
 		return 0;
 
diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index 505d85291ee6..5fd425ac1b3b 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -1158,6 +1158,68 @@ vlv_sprite_check(struct intel_crtc_state *crtc_state,
 	return 0;
 }
 
+static int skl_plane_check_fb(const struct intel_crtc_state *crtc_state,
+			      const struct intel_plane_state *plane_state)
+{
+	const struct drm_framebuffer *fb = plane_state->base.fb;
+	unsigned int rotation = plane_state->base.rotation;
+	struct drm_format_name_buf format_name;
+
+	if (!fb)
+		return 0;
+
+	if (rotation & ~(DRM_MODE_ROTATE_0 | DRM_MODE_ROTATE_180) &&
+	    (fb->modifier == I915_FORMAT_MOD_Y_TILED_CCS &&
+	     fb->modifier == I915_FORMAT_MOD_Yf_TILED_CCS)) {
+		DRM_DEBUG_KMS("RC support only with 0/180 degree rotation (%x)\n",
+			      rotation);
+		return -EINVAL;
+	}
+
+	if (rotation & DRM_MODE_REFLECT_X &&
+	    fb->modifier == DRM_FORMAT_MOD_LINEAR) {
+		DRM_DEBUG_KMS("horizontal flip is not supported with linear surface formats\n");
+		return -EINVAL;
+	}
+
+	if (drm_rotation_90_or_270(rotation)) {
+		if (fb->modifier != I915_FORMAT_MOD_Y_TILED &&
+		    fb->modifier != I915_FORMAT_MOD_Yf_TILED) {
+			DRM_DEBUG_KMS("Y/Yf tiling required for 90/270!\n");
+			return -EINVAL;
+		}
+
+		/*
+		 * 90/270 is not allowed with RGB64 16:16:16:16,
+		 * RGB 16-bit 5:6:5, and Indexed 8-bit.
+		 * TBD: Add RGB64 case once its added in supported format list.
+		 */
+		switch (fb->format->format) {
+		case DRM_FORMAT_C8:
+		case DRM_FORMAT_RGB565:
+			DRM_DEBUG_KMS("Unsupported pixel format %s for 90/270!\n",
+				      drm_get_format_name(fb->format->format,
+							  &format_name));
+			return -EINVAL;
+		default:
+			break;
+		}
+	}
+
+	/* Y-tiling is not supported in IF-ID Interlace mode */
+	if (crtc_state->base.enable &&
+	    crtc_state->base.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE &&
+	    (fb->modifier == I915_FORMAT_MOD_Y_TILED ||
+	     fb->modifier == I915_FORMAT_MOD_Yf_TILED ||
+	     fb->modifier == I915_FORMAT_MOD_Y_TILED_CCS ||
+	     fb->modifier == I915_FORMAT_MOD_Yf_TILED_CCS)) {
+		DRM_DEBUG_KMS("Y/Yf tiling not supported in IF-ID mode\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
 int skl_plane_check(struct intel_crtc_state *crtc_state,
 		    struct intel_plane_state *plane_state)
 {
@@ -1166,6 +1228,10 @@ int skl_plane_check(struct intel_crtc_state *crtc_state,
 	int max_scale, min_scale;
 	int ret;
 
+	ret = skl_plane_check_fb(crtc_state, plane_state);
+	if (ret)
+		return ret;
+
 	/* use scaler when colorkey is not required */
 	if (!plane_state->ckey.flags) {
 		const struct drm_framebuffer *fb = plane_state->base.fb;
-- 
2.16.4

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