drm/i915: Switch intel_fb_align_height to fb format modifiers

With this we can treat the fb format modifier completely independently
from the fencing mode in obj->tiling_mode in the initial plane code.
Which means new tiling modes without any gtt fence are now fully
support in the core i915 driver code.

v2: Also add pixel_format while at it, we need this to compute the
height for the new tiling formats.

Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>

drivers/gpu/drm/i915/intel_display.c

@@ -2190,11 +2190,15 @@ static bool need_vtd_wa(struct drm_device *dev)
 }
 
 int
-intel_fb_align_height(struct drm_device *dev, int height, unsigned int tiling)
+intel_fb_align_height(struct drm_device *dev, int height,
+		      uint32_t pixel_format,
+		      uint64_t fb_format_modifier)
 {
 	int tile_height;
 
-	tile_height = tiling ? (IS_GEN2(dev) ? 16 : 8) : 1;
+	tile_height = fb_format_modifier == I915_FORMAT_MOD_X_TILED ?
+		(IS_GEN2(dev) ? 16 : 8) : 1;
+
 	return ALIGN(height, tile_height);
 }
 
@@ -6657,7 +6661,8 @@ i9xx_get_initial_plane_config(struct intel_crtc *crtc,
 	fb->pitches[0] = val & 0xffffffc0;
 
 	aligned_height = intel_fb_align_height(dev, fb->height,
-					       plane_config->tiling);
+					       fb->pixel_format,
+					       fb->modifier[0]);
 
 	plane_config->size = PAGE_ALIGN(fb->pitches[0] * aligned_height);
 
@@ -7699,7 +7704,8 @@ skylake_get_initial_plane_config(struct intel_crtc *crtc,
 	fb->pitches[0] = (val & 0x3ff) * stride_mult;
 
 	aligned_height = intel_fb_align_height(dev, fb->height,
-					       plane_config->tiling);
+					       fb->pixel_format,
+					       fb->modifier[0]);
 
 	plane_config->size = ALIGN(fb->pitches[0] * aligned_height, PAGE_SIZE);
 
@@ -7795,7 +7801,8 @@ ironlake_get_initial_plane_config(struct intel_crtc *crtc,
 	fb->pitches[0] = val & 0xffffffc0;
 
 	aligned_height = intel_fb_align_height(dev, fb->height,
-					       plane_config->tiling);
+					       fb->pixel_format,
+					       fb->modifier[0]);
 
 	plane_config->size = PAGE_ALIGN(fb->pitches[0] * aligned_height);
 
@@ -12823,7 +12830,8 @@ static int intel_framebuffer_init(struct drm_device *dev,
 		return -EINVAL;
 
 	aligned_height = intel_fb_align_height(dev, mode_cmd->height,
-					       obj->tiling_mode);
+					       mode_cmd->pixel_format,
+					       mode_cmd->modifier[0]);
 	/* FIXME drm helper for size checks (especially planar formats)? */
 	if (obj->base.size < aligned_height * mode_cmd->pitches[0])
 		return -EINVAL;

drivers/gpu/drm/i915/intel_drv.h

@@ -879,7 +879,8 @@ void intel_frontbuffer_flip(struct drm_device *dev,
 }
 
 int intel_fb_align_height(struct drm_device *dev, int height,
-			  unsigned int tiling);
+			  uint32_t pixel_format,
+			  uint64_t fb_format_modifier);
 void intel_fb_obj_flush(struct drm_i915_gem_object *obj, bool retire);
 
 

drivers/gpu/drm/i915/intel_fbdev.c

@@ -594,7 +594,8 @@ static bool intel_fbdev_init_bios(struct drm_device *dev,
 
 		cur_size = intel_crtc->config->base.adjusted_mode.crtc_vdisplay;
 		cur_size = intel_fb_align_height(dev, cur_size,
-						 plane_config->tiling);
+						 fb->base.pixel_format,
+						 fb->base.modifier[0]);
 		cur_size *= fb->base.pitches[0];
 		DRM_DEBUG_KMS("pipe %c area: %dx%d, bpp: %d, size: %d\n",
 			      pipe_name(intel_crtc->pipe),