[PATCH 7/8] drm/i915: Enable querying offset of UV plane with intel_plane_obj_offset

[Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>]

From: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

Do we need this?

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
---
 drivers/gpu/drm/i915/i915_gem_gtt.c  |  2 ++
 drivers/gpu/drm/i915/i915_gem_gtt.h  |  2 ++
 drivers/gpu/drm/i915/intel_display.c | 27 ++++++++++++++++++++++-----
 drivers/gpu/drm/i915/intel_drv.h     |  3 ++-
 drivers/gpu/drm/i915/intel_sprite.c  |  2 +-
 5 files changed, 29 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index bf3ee44..0cffa69 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -2773,6 +2773,8 @@ intel_rotate_fb_obj_pages(struct i915_ggtt_view *ggtt_view,
 		if (offset_in_page(rot_info->uv_offset))
 			uv_start_page--;
 
+		rot_info->uv_start_page = uv_start_page;
+
 		rotate_pages(page_addr_list, uv_start_page,
 			     width_pages_uv, height_pages_uv,
 			     st, sg);
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.h b/drivers/gpu/drm/i915/i915_gem_gtt.h
index 5118da1..d8ae9ee 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.h
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.h
@@ -126,6 +126,8 @@ struct intel_rotation_info {
 	unsigned int uv_offset;
 	uint32_t pixel_format;
 	uint64_t fb_modifier;
+
+	unsigned int uv_start_page;
 };
 
 struct i915_ggtt_view {
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index b4bf998..62b92ac 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -2933,14 +2933,30 @@ u32 intel_fb_stride_alignment(struct drm_device *dev, uint64_t fb_modifier,
 }
 
 unsigned long intel_plane_obj_offset(struct intel_plane *intel_plane,
-				     struct drm_i915_gem_object *obj)
+				     struct drm_i915_gem_object *obj,
+				     unsigned int plane)
 {
 	const struct i915_ggtt_view *view = &i915_ggtt_view_normal;
+	struct i915_vma *vma;
+	unsigned char *offset;
+	unsigned long uv_start;
 
 	if (intel_rotation_90_or_270(intel_plane->base.state->rotation))
 		view = &i915_ggtt_view_rotated;
 
-	return i915_gem_obj_ggtt_offset_view(obj, view);
+	vma = i915_gem_obj_to_ggtt_view(obj, view);
+	if (WARN(!vma, "ggtt vma for display object not found! (view=%u)\n",
+		 view->type))
+		return -1;
+
+	offset = (unsigned char *)vma->node.start;
+
+	if (plane == 1) {
+		uv_start = vma->ggtt_view.rotation_info.uv_start_page;
+		offset += uv_start * PAGE_SIZE;
+	}
+
+	return (unsigned long)offset;
 }
 
 /*
@@ -3115,7 +3131,7 @@ static void skylake_update_primary_plane(struct drm_crtc *crtc,
 	obj = intel_fb_obj(fb);
 	stride_div = intel_fb_stride_alignment(dev, fb->modifier[0],
 					       fb->pixel_format);
-	surf_addr = intel_plane_obj_offset(to_intel_plane(plane), obj);
+	surf_addr = intel_plane_obj_offset(to_intel_plane(plane), obj, 0);
 
 	/*
 	 * FIXME: intel_plane_state->src, dst aren't set when transitional
@@ -11082,8 +11098,9 @@ static int intel_crtc_page_flip(struct drm_crtc *crtc,
 	if (ret)
 		goto cleanup_pending;
 
-	work->gtt_offset = intel_plane_obj_offset(to_intel_plane(primary), obj)
-						  + intel_crtc->dspaddr_offset;
+	work->gtt_offset = intel_plane_obj_offset(to_intel_plane(primary),
+						  obj, 0);
+	work->gtt_offset += intel_crtc->dspaddr_offset;
 
 	if (mmio_flip) {
 		ret = intel_queue_mmio_flip(dev, crtc, fb, obj, ring,
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 01c1ac8..79bee46 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1142,7 +1142,8 @@ int skl_max_scale(struct intel_crtc *crtc, struct intel_crtc_state *crtc_state,
 	uint32_t pixel_format);
 
 unsigned long intel_plane_obj_offset(struct intel_plane *intel_plane,
-				     struct drm_i915_gem_object *obj);
+				     struct drm_i915_gem_object *obj,
+				     unsigned int plane);
 u32 skl_plane_ctl_format(uint32_t pixel_format);
 u32 skl_plane_ctl_tiling(uint64_t fb_modifier);
 u32 skl_plane_ctl_rotation(unsigned int rotation);
diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index 4a94529..fc1505b7 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -228,7 +228,7 @@ skl_update_plane(struct drm_plane *drm_plane, struct drm_crtc *crtc,
 	else if (key->flags & I915_SET_COLORKEY_SOURCE)
 		plane_ctl |= PLANE_CTL_KEY_ENABLE_SOURCE;
 
-	surf_addr = intel_plane_obj_offset(intel_plane, obj);
+	surf_addr = intel_plane_obj_offset(intel_plane, obj, 0);
 
 	if (intel_rotation_90_or_270(rotation)) {
 		/* stride: Surface height in tiles */
-- 
2.4.0

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