drm/i915: split aligned height calculation out v2

For use by get_plane_config.

v2: cleanup tile_height bits (Chris)

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Change-Id: Ie4a01d12622ca0a7ffa1385fb41a67c12961e2fc

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index d81bb88..949efa6 100644 (file)
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -1932,6 +1932,14 @@ static bool need_vtd_wa(struct drm_device *dev)
        return false;
 }
 
+static int intel_align_height(struct drm_device *dev, int height, bool tiled)
+{
+       int tile_height;
+
+       tile_height = tiled ? (IS_GEN2(dev) ? 16 : 8) : 1;
+       return ALIGN(height, tile_height);
+}
+
 int
 intel_pin_and_fence_fb_obj(struct drm_device *dev,
                           struct drm_i915_gem_object *obj,
@@ -10469,7 +10477,7 @@ int intel_framebuffer_init(struct drm_device *dev,
                           struct drm_mode_fb_cmd2 *mode_cmd,
                           struct drm_i915_gem_object *obj)
 {
-       int aligned_height, tile_height;
+       int aligned_height;
        int pitch_limit;
        int ret;
 
@@ -10563,9 +10571,8 @@ int intel_framebuffer_init(struct drm_device *dev,
        if (mode_cmd->offsets[0] != 0)
                return -EINVAL;
 
-       tile_height = IS_GEN2(dev) ? 16 : 8;
-       aligned_height = ALIGN(mode_cmd->height,
-                              obj->tiling_mode ? tile_height : 1);
+       aligned_height = intel_align_height(dev, mode_cmd->height,
+                                           obj->tiling_mode);
        /* FIXME drm helper for size checks (especially planar formats)? */
        if (obj->base.size < aligned_height * mode_cmd->pitches[0])
                return -EINVAL;